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-rw-r--r--xv6-rev2.tar.gzbin68356 -> 724370 bytes
-rw-r--r--xv6.pdfbin146682 -> 146568 bytes
-rw-r--r--xv6.ps25151
3 files changed, 12697 insertions, 12454 deletions
diff --git a/xv6-rev2.tar.gz b/xv6-rev2.tar.gz
index f535652..f2826af 100644
--- a/xv6-rev2.tar.gz
+++ b/xv6-rev2.tar.gz
Binary files differ
diff --git a/xv6.pdf b/xv6.pdf
index cf2e59c..16f6d54 100644
--- a/xv6.pdf
+++ b/xv6.pdf
Binary files differ
diff --git a/xv6.ps b/xv6.ps
index b73ae3e..4a90f7b 100644
--- a/xv6.ps
+++ b/xv6.ps
@@ -1,16 +1,16 @@
%!PS-Adobe-3.0
-%%Creator: xpdf/pdftops 3.01
%%LanguageLevel: 2
%%DocumentSuppliedResources: (atend)
%%DocumentMedia: plain 612 792 0 () ()
%%BoundingBox: 0 0 612 792
-%%Pages: 79
+%%Pages: 80
%%EndComments
%%BeginDefaults
%%PageMedia: plain
%%EndDefaults
%%BeginProlog
-%%BeginResource: procset xpdf 3.01 0
+%%BeginResource: procset xpdf 3.00 0
+%%Copyright: Copyright 1996-2004 Glyph & Cog, LLC
/xpdf 75 dict def xpdf begin
% PDF special state
/pdfDictSize 15 def
@@ -135,6 +135,7 @@
% clipping operators
/W { clip newpath } def
/W* { eoclip newpath } def
+/Ws { strokepath clip newpath } def
% text state operators
/Tc { /pdfCharSpacing exch def } def
/Tf { dup /pdfFontSize exch def
@@ -257,6 +258,7 @@
not { pop exit } if
(%-EOD-) eq { exit } if } loop
} def
+/pr { 2 index 2 index 3 2 roll putinterval 4 add } def
/pdfImClip {
gsave
0 2 4 index length 1 sub {
@@ -338,7 +340,8 @@
dup 4 3 roll exch 4 index axialSH
exch 3 2 roll axialSH
} {
- pop 2 copy add 0.5 mul axialCol sc
+ pop 2 copy add 0.5 mul
+ axialCol sc
exch dup dx mul x0 add exch dy mul y0 add
3 2 roll dup dx mul x0 add exch dy mul y0 add
dx abs dy abs ge {
@@ -382,11 +385,24 @@
dup 4 3 roll exch 4 index radialSH
exch 3 2 roll radialSH
} {
- pop 2 copy add 0.5 mul dt mul t0 add axialCol sc
- exch dup dx mul x0 add exch dup dy mul y0 add exch dr mul r0 add
- 0 360 arc h
- dup dx mul x0 add exch dup dy mul y0 add exch dr mul r0 add
- 0 360 arc h f*
+ pop 2 copy add 0.5 mul dt mul t0 add
+ radialCol sc
+ encl {
+ exch dup dx mul x0 add exch dup dy mul y0 add exch dr mul r0 add
+ 0 360 arc h
+ dup dx mul x0 add exch dup dy mul y0 add exch dr mul r0 add
+ 360 0 arcn h f
+ } {
+ 2 copy
+ dup dx mul x0 add exch dup dy mul y0 add exch dr mul r0 add
+ a1 a2 arcn
+ dup dx mul x0 add exch dup dy mul y0 add exch dr mul r0 add
+ a2 a1 arcn h
+ dup dx mul x0 add exch dup dy mul y0 add exch dr mul r0 add
+ a1 a2 arc
+ dup dx mul x0 add exch dup dy mul y0 add exch dr mul r0 add
+ a2 a1 arc h f
+ } ifelse
} ifelse
} def
end
@@ -394,8 +410,8 @@ end
%%EndProlog
%%BeginSetup
xpdf begin
-%%BeginResource: font LucidaSans-Typewriter83
-%!FontType1-1.0: LucidaSans-Typewriter83
+%%BeginResource: font YLWBJI+LucidaSans-Typewriter83
+%!FontType1-1.0: YLWBJI+LucidaSans-Typewriter83
12 dict begin
/FontInfo 10 dict dup begin
/Notice (Copyright (c) 1991 Bigelow & Holmes Inc. and Y&Y, Inc. (508) 371-3286. All Rights Reserved.) readonly def
@@ -406,10 +422,10 @@ xpdf begin
/UnderlinePosition 0 def
/UnderlineThickness 0 def
end readonly def
-/FontName /LucidaSans-Typewriter83 def
+/FontName /YLWBJI+LucidaSans-Typewriter83 def
/PaintType 0 def
/FontType 1 def
-/FontMatrix [0.000833333 0 0 0.000833333 0 0] readonly def
+/FontMatrix [0.00083333 0 0 0.00083333 0 0] readonly def
/FontBBox [0 -205 602 783] readonly def
/StrokeWidth 0 def
/Encoding 256 array
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[0] SC
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-(Aug 30 10:08 2007 README Page 1) 144.161 Tj
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+(Sep 3 10:04 2008 README Page 1) 144.161 Tj
0 -28.4801 Td
(xv6 is a re-implementation of Dennis Ritchie's and Ken Thompson\
's Unix) 305.796 Tj
0 -37.9735 Td
(Version 6 \(v6\). xv6 loosely follows the structure and style \
-of v6,) 292.69 Tj
+of v6,) 292.6905 Tj
0 -47.4668 Td
(but is implemented for a modern x86-based multiprocessor using \
ANSI C.) 305.796 Tj
@@ -953,76 +968,76 @@ ANSI C.) 305.796 Tj
0 -94.9336 Td
(to Peer Communications; ISBN: 1-57398-013-7; 1st edition \(June\
14,) 288.322 Tj
-0 -104.427 Td
+0 -104.4269 Td
(2000\)\). See also http://pdos.csail.mit.edu/6.828/2007/v6.html\
, which) 297.059 Tj
-0 -113.92 Td
-(provides pointers to on-line resources for v6.) 200.952 Tj
+0 -113.9203 Td
+(provides pointers to on-line resources for v6.) 200.9517 Tj
0 -132.907 Td
-(xv6 borrows code from the following sources:) 192.215 Tj
-17.4609 -142.4 Td
+(xv6 borrows code from the following sources:) 192.2146 Tj
+17.4613 -142.4004 Td
(JOS \(asm.h, elf.h, mmu.h, bootasm.S, ide.c, console.c, and oth\
ers\)) 288.322 Tj
-17.4609 -151.893 Td
-(Plan 9 \(bootother.S, mp.h, mp.c, lapic.c\)) 179.109 Tj
-17.4609 -161.387 Td
+17.4613 -151.8937 Td
+(Plan 9 \(bootother.S, mp.h, mp.c, lapic.c\)) 179.1091 Tj
+17.4613 -161.3871 Td
(FreeBSD \(ioapic.c\)) 78.6333 Tj
-17.4609 -170.88 Td
+17.4613 -170.8804 Td
(NetBSD \(console.c\)) 78.6333 Tj
-0 -189.867 Td
-(The following people made contributions:) 174.741 Tj
-17.4609 -199.36 Td
+0 -189.8667 Td
+(The following people made contributions:) 174.7406 Tj
+17.4613 -199.3601 Td
(Russ Cox \(context switching, locking\)) 161.635 Tj
-17.4609 -208.853 Td
+17.4613 -208.8535 Td
(Cliff Frey \(MP\)) 65.5277 Tj
-17.4609 -218.347 Td
+17.4613 -218.3468 Td
(Xiao Yu \(MP\)) 52.4222 Tj
-0 -237.334 Td
-(The code in the files that constitute xv6 is) 192.215 Tj
-0 -246.827 Td
+0 -237.3335 Td
+(The code in the files that constitute xv6 is) 192.2146 Tj
+0 -246.8269 Td
(Copyright 2006-2007 Frans Kaashoek, Robert Morris, and Russ Cox\
-.) 279.585 Tj
-0 -265.813 Td
+.) 279.5849 Tj
+0 -265.8136 Td
(ERROR REPORTS) 56.7907 Tj
-0 -284.799 Td
+0 -284.8003 Td
(If you spot errors or have suggestions for improvement, please \
-send) 292.69 Tj
-0 -294.293 Td
+send) 292.6905 Tj
+0 -294.2936 Td
(email to Frans Kaashoek and Robert Morris \(kaashoek,rtm@csail.\
mit.edu\). ) 314.533 Tj
-0 -313.28 Td
-(BUILDING AND RUNNING XV6) 104.844 Tj
-0 -332.266 Td
+0 -313.2803 Td
+(BUILDING AND RUNNING XV6) 104.8443 Tj
+0 -332.267 Td
(To build xv6 on an x86 ELF machine \(like Linux or FreeBSD\), r\
-un "make".) 310.165 Tj
-0 -341.76 Td
+un "make".) 310.1645 Tj
+0 -341.7604 Td
(On non-x86 or non-ELF machines \(like OS X, even on x86\), you \
-will) 283.953 Tj
-0 -351.253 Td
+will) 283.9534 Tj
+0 -351.2538 Td
(need to install a cross-compiler gcc suite capable of producing\
- x86 ELF) 310.165 Tj
-0 -360.746 Td
-(binaries. See http://pdos.csail.mit.edu/6.828/2007/tools.html.) 275.216 Tj
-0 -370.24 Td
-(Then run "make TOOLPREFIX=i386-jos-elf-".) 179.109 Tj
-0 -389.226 Td
-(To run xv6, you can use Bochs or QEMU, both PC simulators.) 253.374 Tj
-0 -398.72 Td
-(Bochs makes debugging easier, but QEMU is much faster. ) 240.268 Tj
-0 -408.213 Td
+ x86 ELF) 310.1645 Tj
+0 -360.7471 Td
+(binaries. See http://pdos.csail.mit.edu/6.828/2007/tools.html.) 275.2164 Tj
+0 -370.2405 Td
+(Then run "make TOOLPREFIX=i386-jos-elf-".) 179.1091 Tj
+0 -389.2272 Td
+(To run xv6, you can use Bochs or QEMU, both PC simulators.) 253.3738 Tj
+0 -398.7205 Td
+(Bochs makes debugging easier, but QEMU is much faster. ) 240.2683 Tj
+0 -408.2139 Td
(To run in Bochs, run "make bochs" and then type "c" at the boch\
s prompt.) 314.533 Tj
-0 -417.706 Td
+0 -417.7073 Td
(To run in QEMU, run "make qemu". Both log the xv6 screen outpu\
t to ) 297.059 Tj
-0 -427.2 Td
+0 -427.2006 Td
(standard output.) 69.8962 Tj
-0 -446.187 Td
-(To create a typeset version of the code, run "make xv6.pdf".) 262.111 Tj
-0 -455.68 Td
-(This requires the "mpage" text formatting utility.) 218.426 Tj
-0 -465.173 Td
-(See http://www.mesa.nl/pub/mpage/.) 148.529 Tj
+0 -446.1873 Td
+(To create a typeset version of the code, run "make xv6.pdf".) 262.1109 Tj
+0 -455.6807 Td
+(This requires the "mpage" text formatting utility.) 218.4257 Tj
+0 -465.174 Td
+(See http://www.mesa.nl/pub/mpage/.) 148.5295 Tj
Q
Q
q
@@ -1036,171 +1051,171 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
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-(Aug 30 10:08 2007 table of contents Page 1) 192.215 Tj
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+(Sep 3 10:04 2008 table of contents Page 1) 192.2146 Tj
0 -28.4801 Td
(The numbers to the left of the file names in the table are shee\
-t numbers.) 318.902 Tj
+t numbers.) 318.9016 Tj
0 -37.9735 Td
(The source code has been printed in a double column format with\
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+ fifty) 301.4275 Tj
0 -47.4668 Td
(lines per column, giving one hundred lines per sheet \(or page\)\
-.) 275.216 Tj
+.) 275.2164 Tj
0 -56.9602 Td
(Thus there is a convenient relationship between line numbers an\
-d sheet numbers.) 345.113 Tj
+d sheet numbers.) 345.1126 Tj
0 -85.4403 Td
(# basic headers) 65.5277 Tj
--4514.16 TJm
+-4514.2 TJm
(# system calls) 61.1592 Tj
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(# pipes) 30.5796 Tj
0 -94.9336 Td
(01 types.h) 43.6851 Tj
--7022.49 TJm
+-7022.54 TJm
(23 traps.h) 43.6851 Tj
-7022.54 TJm
(51 pipe.c) 39.3166 Tj
0 -104.427 Td
(01 param.h) 43.6851 Tj
--7022.49 TJm
+-7022.54 TJm
(24 vectors.pl) 56.7907 Tj
-0 -113.92 Td
+0 -113.9204 Td
(02 defs.h) 39.3166 Tj
--7524.16 TJm
+-7524.2 TJm
(24 trapasm.S) 52.4222 Tj
-6019.2 TJm
(# string operations) 83.0018 Tj
-0 -123.414 Td
+0 -123.4137 Td
(03 x86.h) 34.9481 Tj
--8025.82 TJm
+-8025.87 TJm
(25 trap.c) 39.3166 Tj
-7524.2 TJm
(53 string.c) 48.0537 Tj
-0 -132.907 Td
+0 -132.9071 Td
(05 asm.h) 34.9481 Tj
--8025.82 TJm
+-8025.87 TJm
(26 syscall.h) 52.4222 Tj
-0 -142.4 Td
+0 -142.4004 Td
(06 mmu.h) 34.9481 Tj
--8025.82 TJm
+-8025.87 TJm
(26 syscall.c) 52.4222 Tj
-6019.2 TJm
(# low-level hardware) 87.3703 Tj
-0 -151.894 Td
+0 -151.8938 Td
(08 elf.h) 34.9481 Tj
--8025.82 TJm
+-8025.87 TJm
(28 sysproc.c) 52.4222 Tj
-6019.2 TJm
(54 mp.h) 30.5796 Tj
-209.535 -161.387 Td
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Q
Q
q
@@ -1925,210 +1938,210 @@ q
[10 0 0 10 0 0] cm
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0 0 Td
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Q
Q
Q
@@ -2156,8 +2169,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
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[10 0 0 10 0 0] cm
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(3811 3837 3838 3852) 83.0018 Tj
--8527.18 TJm
-(2383 2560 3356 3357) 83.0018 Tj
-17.4609 -275.307 Td
+-8527.14 TJm
+(2384 5727) 39.3166 Tj
+17.4613 -237.334 Td
(3884 3902 3924 3951) 83.0018 Tj
-6520.6 TJm
-(IRQ_KBD 2382) 52.4222 Tj
-17.4609 -284.801 Td
+(IRQ_IDE 2383) 52.4222 Tj
+17.4613 -246.8274 Td
(3977 4010 4052 4082) 83.0018 Tj
--8527.18 TJm
-(2382 2564 6510 6511) 83.0018 Tj
-17.4609 -294.294 Td
+-8527.14 TJm
+(2383 2556 3356 3357) 83.0018 Tj
+17.4613 -256.3207 Td
(4102 4152 4211 4212) 83.0018 Tj
-6520.6 TJm
-(IRQ_OFFSET 2379) 65.5277 Tj
-17.4609 -303.788 Td
+(IRQ_KBD 2382) 52.4222 Tj
+17.4613 -265.8141 Td
(4252 4256 4353 4356) 83.0018 Tj
--8527.18 TJm
-(2379 2551 2560 2564) 83.0018 Tj
-17.4609 -313.281 Td
+-8527.14 TJm
+(2382 2560 6560 6561) 83.0018 Tj
+17.4613 -275.3075 Td
(4388 4395 4666 4702) 83.0018 Tj
--8527.18 TJm
-(2568 2595 5707 5718) 83.0018 Tj
-17.4609 -322.774 Td
+-6520.6 TJm
+(IRQ_OFFSET 2379) 65.5277 Tj
+17.4613 -284.8008 Td
(4753 4800 4804 4856) 83.0018 Tj
--8527.18 TJm
-(5730 5867 5881 5947) 83.0018 Tj
-17.4609 -332.268 Td
+-8527.14 TJm
+(2379 2547 2556 2560) 83.0018 Tj
+17.4613 -294.2942 Td
(4903 4921 4933 5015) 83.0018 Tj
--8527.18 TJm
-(5966) 17.4741 Tj
-17.4609 -341.761 Td
-(6385 6451) 39.3166 Tj
--11537.3 TJm
-(IRQ_SLAVE 5910) 61.1592 Tj
-0 -351.254 Td
-(INPUT_BUF 6400) 61.1592 Tj
+-8527.14 TJm
+(2564 2591 5707 5714) 83.0018 Tj
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+(6435 6501) 39.3166 Tj
+-13543.8 TJm
+(5727 5917 5931 5997) 83.0018 Tj
+0 -313.2809 Td
+(INPUT_BUF 6450) 61.1592 Tj
-13042 TJm
-(5910 5914 5952 5967) 83.0018 Tj
-17.4609 -360.748 Td
-(6400 6403 6424 6436) 83.0018 Tj
+(6016) 17.4741 Tj
+17.4613 -322.7743 Td
+(6450 6453 6474 6486) 83.0018 Tj
-6520.6 TJm
-(IRQ_SPURIOUS 2385) 74.2647 Tj
-17.4609 -370.241 Td
-(6439 6481) 39.3166 Tj
--13543.8 TJm
-(2385 2568 5707) 61.1592 Tj
-0 -379.734 Td
-(insl 0363) 39.3166 Tj
+(IRQ_SLAVE 5960) 61.1592 Tj
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+(6487 6489 6518) 61.1592 Tj
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+(5960 5964 6002 6017) 83.0018 Tj
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-13543.8 TJm
-(IRQ_TIMER 2381) 61.1592 Tj
-17.4609 -389.228 Td
-(0363 1173 3415) 61.1592 Tj
+(IRQ_SPURIOUS 2385) 74.2647 Tj
+17.4613 -351.2543 Td
+(0362 1173 3414) 61.1592 Tj
-11035.5 TJm
-(2381 2551 2595 5718) 83.0018 Tj
-0 -398.721 Td
-(INT_DISABLED 5819) 74.2647 Tj
--11537 TJm
-(6580) 17.4741 Tj
-17.4609 -408.214 Td
-(5819 5867) 39.3166 Tj
+(2385 2564 5707) 61.1592 Tj
+0 -360.7477 Td
+(INT_DISABLED 5869) 74.2647 Tj
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+(IRQ_TIMER 2381) 61.1592 Tj
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+(5869 5917) 39.3166 Tj
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+(5858 5908) 39.3166 Tj
-11537.3 TJm
(isdirempty 4702) 65.5277 Tj
-0 -417.707 Td
-(IOAPIC 5808) 48.0537 Tj
--14547 TJm
+0 -398.7211 Td
+(ioapic_enable 5923) 78.6333 Tj
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(4702 4709 4778) 61.1592 Tj
-17.4609 -427.201 Td
-(5808 5858) 39.3166 Tj
--11537.3 TJm
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+(0256 3357 5923 6561) 83.0018 Tj
+-6520.6 TJm
(ismp 5514) 39.3166 Tj
-0 -436.694 Td
-(ioapic_enable 5873) 78.6333 Tj
--11035.3 TJm
-(0280 1247 5514 5613) 83.0018 Tj
-17.4609 -446.188 Td
-(0256 3357 5873 6511) 83.0018 Tj
--8527.18 TJm
-(5855 5875) 39.3166 Tj
-0 -455.681 Td
+0 -417.7079 Td
(ioapic_id 5516) 61.1592 Tj
--11035.4 TJm
+-13042 TJm
+(0276 1233 5514 5613) 83.0018 Tj
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+(0257 5516 5628 5911) 83.0018 Tj
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+-14045.6 TJm
(itrunc 4052) 48.0537 Tj
-17.4609 -465.174 Td
-(0257 5516 5628 5861) 83.0018 Tj
--8527.18 TJm
+0 -446.1879 Td
+(ioapic_init 5901) 69.8962 Tj
+-12038.7 TJm
(3675 3911 4052) 61.1592 Tj
-17.4609 -474.668 Td
-(5862) 17.4741 Tj
--14045.6 TJm
+17.4613 -455.6813 Td
+(0258 1226 5901 5912) 83.0018 Tj
+-6520.6 TJm
(iunlock 3884) 52.4222 Tj
-0 -484.161 Td
-(ioapic_init 5851) 69.8962 Tj
+0 -465.1747 Td
+(ioapic_read 5884) 69.8962 Tj
-12038.7 TJm
(0241 3884 3887 3926) 83.0018 Tj
-17.4609 -493.654 Td
-(0258 1237 5851 5862) 83.0018 Tj
--8527.18 TJm
+17.4613 -474.6676 Td
+(5884 5909 5910) 61.1592 Tj
+-11035.5 TJm
(4371 4483 4514 4534) 83.0018 Tj
+0 -484.161 Td
+(ioapic_write 5891) 74.2647 Tj
+-11537 TJm
+(4679 4880 4942 6439) 83.0018 Tj
+17.4613 -493.6543 Td
+(5891 5917 5918 5931) 83.0018 Tj
+-8527.14 TJm
+(6506) 17.4741 Tj
Q
Q
q
@@ -2389,210 +2401,210 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 cross-references Page 6) 187.846 Tj
-17.4609 -28.4801 Td
-(4679 4880 4942 6389) 83.0018 Tj
--8527.18 TJm
-(6024 6067 6089 6113) 83.0018 Tj
-17.4609 -37.9735 Td
-(6456) 17.4741 Tj
--14045.6 TJm
-(KEY_UP 6021) 48.0537 Tj
-0 -47.4668 Td
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 cross-references Page 6) 187.8461 Tj
+0 -28.4801 Td
(iunlockput 3924) 65.5277 Tj
--12540.3 TJm
-(6021 6065 6087 6111) 83.0018 Tj
-17.4609 -56.9602 Td
+-10533.8 TJm
+(KEY_RT 6074) 48.0537 Tj
+17.4613 -37.9735 Td
(0242 3924 4366 4375) 83.0018 Tj
--6520.6 TJm
-(kfree 2255) 43.6851 Tj
-17.4609 -66.4535 Td
+-8527.14 TJm
+(6074 6117 6139 6163) 83.0018 Tj
+17.4613 -47.4664 Td
(4378 4674 4686 4692) 83.0018 Tj
--8527.18 TJm
-(0262 1664 1726 2069) 83.0018 Tj
-17.4609 -75.9469 Td
+-6520.6 TJm
+(KEY_UP 6071) 48.0537 Tj
+17.4613 -56.9594 Td
(4696 4766 4771 4779) 83.0018 Tj
--8527.18 TJm
-(2070 2236 2255 2260) 83.0018 Tj
-17.4609 -85.4403 Td
+-8527.14 TJm
+(6071 6115 6137 6161) 83.0018 Tj
+17.4613 -66.4524 Td
(4780 4787 4791 4812) 83.0018 Tj
--8527.18 TJm
-(5101 5111 5202 5228) 83.0018 Tj
-17.4609 -94.9336 Td
-(4815 4822 4833 4834) 83.0018 Tj
-6520.6 TJm
-(kill 1976) 39.3166 Tj
-17.4609 -104.427 Td
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+(4815 4822 4833 4834) 83.0018 Tj
+-8527.14 TJm
+(0262 1662 1731 2069) 83.0018 Tj
+17.4613 -85.4383 Td
(4845 4869 4877 4913) 83.0018 Tj
--8527.18 TJm
-(0299 1976 2581 2837) 83.0018 Tj
-17.4609 -113.92 Td
+-8527.14 TJm
+(2070 2236 2255 2260) 83.0018 Tj
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(4925 4939 5069 5112) 83.0018 Tj
--8527.18 TJm
-(6717) 17.4741 Tj
-0 -123.413 Td
+-8527.14 TJm
+(5101 5111 5202 5228) 83.0018 Tj
+0 -104.4246 Td
(iupdate 3977) 52.4222 Tj
-12038.8 TJm
-(kinit 2225) 43.6851 Tj
-17.4609 -132.907 Td
+(kill 1976) 39.3166 Tj
+17.4613 -113.918 Td
(0243 3913 3977 4077) 83.0018 Tj
--8527.18 TJm
-(0263 1238 2225) 61.1592 Tj
-17.4609 -142.4 Td
+-8527.14 TJm
+(0296 1976 2578 2839) 83.0018 Tj
+17.4613 -123.411 Td
(4178 4678 4695 4790) 83.0018 Tj
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+(6817) 17.4741 Tj
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+(4829 4840) 39.3166 Tj
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+(kinit 2225) 43.6851 Tj
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+(I_BUSY 3266) 48.0537 Tj
+-14547 TJm
+(0263 1227 2225) 61.1592 Tj
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+(3266 3861 3863 3886) 83.0018 Tj
-6520.6 TJm
(KSTACKSIZE 0152) 65.5277 Tj
-17.4609 -151.893 Td
-(4829 4840) 39.3166 Tj
--13543.9 TJm
-(0152 1679 1714 1718) 83.0018 Tj
-0 -161.387 Td
+17.4613 -161.3836 Td
+(3890 3907 3909 3915) 83.0018 Tj
+-8527.14 TJm
+(0152 1283 1284 1680) 83.0018 Tj
+0 -170.877 Td
(I_VALID 3267) 52.4222 Tj
-14045.3 TJm
-(1726 2070) 39.3166 Tj
-17.4609 -170.88 Td
+(1719 1723 1731 2070) 83.0018 Tj
+17.4613 -180.3703 Td
(3267 3866 3876 3905) 83.0018 Tj
-6520.6 TJm
-(lapic_eoi 5760) 61.1592 Tj
-0 -180.373 Td
+(lapicw 5690) 48.0537 Tj
+0 -189.8633 Td
(kalloc 2304) 48.0537 Tj
-14547 TJm
-(0273 2558 2562 2566) 83.0018 Tj
-17.4609 -189.867 Td
-(0261 1657 1714 1725) 83.0018 Tj
--8527.18 TJm
-(2570 5760) 39.3166 Tj
-17.4609 -199.36 Td
-(1759 2231 2304 2310) 83.0018 Tj
--6520.6 TJm
-(lapic_init 5701) 65.5277 Tj
-17.4609 -208.854 Td
-(2328 5052 5178) 61.1592 Tj
--11035.5 TJm
-(0274 1231 1263 5701) 83.0018 Tj
-0 -218.347 Td
+(5690 5707 5713 5714) 83.0018 Tj
+17.4613 -199.3567 Td
+(0261 1283 1657 1719) 83.0018 Tj
+-8527.14 TJm
+(5715 5718 5719 5724) 83.0018 Tj
+17.4613 -208.8497 Td
+(1730 1764 2231 2304) 83.0018 Tj
+-8527.14 TJm
+(5727 5730 5731 5734) 83.0018 Tj
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+(2310 2328 5052 5178) 83.0018 Tj
+-8527.14 TJm
+(5737 5738 5743 5775) 83.0018 Tj
+0 -227.836 Td
(kalloc_lock 2212) 69.8962 Tj
--10032.1 TJm
-(lapic_startap 5780) 78.6333 Tj
-17.4609 -227.84 Td
+-12038.7 TJm
+(5821 5822 5824 5833) 83.0018 Tj
+17.4613 -237.3293 Td
(2212 2231 2265 2293) 83.0018 Tj
--8527.18 TJm
-(0275 1293 5780) 61.1592 Tj
-17.4609 -237.334 Td
+-8527.14 TJm
+(5834) 17.4741 Tj
+17.4613 -246.8223 Td
(2312 2316 2322 2326) 83.0018 Tj
-6520.6 TJm
-(lgdt 0403) 39.3166 Tj
-0 -246.827 Td
-(KBDATAP 6004) 52.4222 Tj
+(lapic_eoi 5772) 61.1592 Tj
+0 -256.3157 Td
+(KBDATAP 6054) 52.4222 Tj
-14045.3 TJm
-(0403 0411 0954 1054) 83.0018 Tj
-17.4609 -256.32 Td
-(6004 6167) 39.3166 Tj
--13543.9 TJm
-(1696) 17.4741 Tj
-0 -265.813 Td
-(kbd_getc 6156) 56.7907 Tj
+(0271 2554 2558 2562) 83.0018 Tj
+17.4613 -265.809 Td
+(6054 6217) 39.3166 Tj
+-13543.8 TJm
+(2567 5772) 39.3166 Tj
+0 -275.3024 Td
+(kbd_getc 6206) 56.7907 Tj
-11537.1 TJm
-(lidt 0417) 39.3166 Tj
-17.4609 -275.307 Td
-(6156 6198) 39.3166 Tj
--13543.9 TJm
-(0417 0425 2530) 61.1592 Tj
-0 -284.8 Td
-(kbd_intr 6196) 56.7907 Tj
+(lapic_init 5701) 65.5277 Tj
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+(6206 6248) 39.3166 Tj
+-13543.8 TJm
+(0272 1220 1258 5701) 83.0018 Tj
+0 -294.2891 Td
+(kbd_intr 6246) 56.7907 Tj
-11537.1 TJm
-(LINT0 5676) 43.6851 Tj
-17.4609 -294.293 Td
-(0266 2565 6196) 61.1592 Tj
+(lapic_startap 5805) 78.6333 Tj
+17.4613 -303.7825 Td
+(0266 2561 6246) 61.1592 Tj
-11035.5 TJm
-(5676 5721) 39.3166 Tj
-0 -303.787 Td
-(KBS_DIB 6003) 52.4222 Tj
+(0273 1286 5805) 61.1592 Tj
+0 -313.2758 Td
+(KBSTATP 6052) 52.4222 Tj
-12038.8 TJm
-(LINT1 5677) 43.6851 Tj
-17.4609 -313.28 Td
-(6003 6165) 39.3166 Tj
--13543.9 TJm
-(5677 5722) 39.3166 Tj
-0 -322.773 Td
-(KBSTATP 6002) 52.4222 Tj
--12038.8 TJm
-(LIST 6760) 39.3166 Tj
-17.4609 -332.267 Td
-(6002 6164) 39.3166 Tj
--13543.9 TJm
-(6760 6840 7007 7283) 83.0018 Tj
-0 -341.76 Td
-(KEY_DEL 6028) 52.4222 Tj
--12038.8 TJm
-(listcmd 6790 7001) 74.2647 Tj
-17.4609 -351.254 Td
-(6028 6069 6091 6115) 83.0018 Tj
--8527.18 TJm
-(6790 6811 6841 7001) 83.0018 Tj
-0 -360.747 Td
-(KEY_DN 6022) 48.0537 Tj
+(lgdt 0403) 39.3166 Tj
+17.4613 -322.7692 Td
+(6052 6214) 39.3166 Tj
+-13543.8 TJm
+(0403 0411 0954 1054) 83.0018 Tj
+0 -332.2622 Td
+(KBS_DIB 6053) 52.4222 Tj
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+(6053 6215) 39.3166 Tj
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+(lidt 0417) 39.3166 Tj
+0 -351.2489 Td
+(KEY_DEL 6078) 52.4222 Tj
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+(0417 0425 2530) 61.1592 Tj
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+(6078 6119 6141 6165) 83.0018 Tj
+-6520.6 TJm
+(LINT0 5679) 43.6851 Tj
+0 -370.2356 Td
+(KEY_DN 6072) 48.0537 Tj
-14547 TJm
-(7003 7146 7257 7284) 83.0018 Tj
-17.4609 -370.24 Td
-(6022 6065 6087 6111) 83.0018 Tj
+(5679 5718) 39.3166 Tj
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+(6072 6115 6137 6161) 83.0018 Tj
-6520.6 TJm
-(LPTPORT 6215) 52.4222 Tj
-0 -379.734 Td
-(KEY_END 6020) 52.4222 Tj
+(LINT1 5680) 43.6851 Tj
+0 -389.2223 Td
+(KEY_END 6070) 52.4222 Tj
-14045.3 TJm
-(6215 6232 6236 6237) 83.0018 Tj
-17.4609 -389.227 Td
-(6020 6068 6090 6114) 83.0018 Tj
--8527.18 TJm
-(6238) 17.4741 Tj
-0 -398.72 Td
-(KEY_HOME 6019) 56.7907 Tj
--11537.1 TJm
-(lpt_putc 6228) 56.7907 Tj
-17.4609 -408.213 Td
-(6019 6068 6090 6114) 83.0018 Tj
--8527.18 TJm
-(6228 6291) 39.3166 Tj
-0 -417.707 Td
-(KEY_INS 6027) 52.4222 Tj
--12038.8 TJm
+(5680 5719) 39.3166 Tj
+17.4613 -398.7157 Td
+(6070 6118 6140 6164) 83.0018 Tj
+-6520.6 TJm
+(LIST 6860) 39.3166 Tj
+0 -408.209 Td
+(KEY_HOME 6069) 56.7907 Tj
+-13543.7 TJm
+(6860 6940 7107 7383) 83.0018 Tj
+17.4613 -417.7024 Td
+(6069 6118 6140 6164) 83.0018 Tj
+-6520.6 TJm
+(listcmd 6890 7101) 74.2647 Tj
+0 -427.1958 Td
+(KEY_INS 6077) 52.4222 Tj
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+(6890 6911 6941 7101) 83.0018 Tj
+17.4613 -436.6891 Td
+(6077 6119 6141 6165) 83.0018 Tj
+-8527.14 TJm
+(7103 7246 7357 7384) 83.0018 Tj
+0 -446.1825 Td
+(KEY_LF 6073) 48.0537 Tj
+-12540.5 TJm
+(LPTPORT 6265) 52.4222 Tj
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+(6073 6117 6139 6163) 83.0018 Tj
+-8527.14 TJm
+(6265 6282 6286 6287) 83.0018 Tj
+0 -465.1692 Td
+(KEY_PGDN 6076) 56.7907 Tj
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+(6288) 17.4741 Tj
+17.4613 -474.6622 Td
+(6076 6116 6138 6162) 83.0018 Tj
+-6520.6 TJm
+(lpt_putc 6278) 56.7907 Tj
+0 -484.1555 Td
+(KEY_PGUP 6075) 56.7907 Tj
+-13543.7 TJm
+(6278 6341) 39.3166 Tj
+17.4613 -493.6489 Td
+(6075 6116 6138 6162) 83.0018 Tj
+-6520.6 TJm
(ltr 0429) 34.9481 Tj
-17.4609 -427.2 Td
-(6027 6069 6091 6115) 83.0018 Tj
--8527.18 TJm
-(0429 0431 1697) 61.1592 Tj
-0 -436.693 Td
-(KEY_LF 6023) 48.0537 Tj
--12540.4 TJm
-(MAXARGS 6763) 52.4222 Tj
-17.4609 -446.187 Td
-(6023 6067 6089 6113) 83.0018 Tj
--8527.18 TJm
-(6763 6771 6772 7240) 83.0018 Tj
-0 -455.68 Td
-(KEY_PGDN 6026) 56.7907 Tj
--11537.1 TJm
-(MAXFILE 3170) 52.4222 Tj
-17.4609 -465.173 Td
-(6026 6066 6088 6112) 83.0018 Tj
--8527.18 TJm
-(3170 4165 4166) 61.1592 Tj
-0 -474.667 Td
-(KEY_PGUP 6025) 56.7907 Tj
--11537.1 TJm
-(memcmp 5315) 48.0537 Tj
-17.4609 -484.16 Td
-(6025 6066 6088 6112) 83.0018 Tj
--8527.18 TJm
-(0321 5315 5543 5588) 83.0018 Tj
-0 -493.654 Td
-(KEY_RT 6024) 48.0537 Tj
--12540.4 TJm
-(memmove 5331) 52.4222 Tj
Q
Q
Q
@@ -2620,8 +2632,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -2636,210 +2647,210 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 cross-references Page 7) 187.846 Tj
-17.4609 -28.4801 Td
-(0322 1284 1660 1722) 83.0018 Tj
--8527.18 TJm
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 cross-references Page 7) 187.8461 Tj
+17.4613 -28.4801 Td
+(0429 0431 1701) 61.1592 Tj
+-11035.5 TJm
+(5638) 17.4741 Tj
+0 -37.9735 Td
+(MAXARGS 6863) 52.4222 Tj
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+(mp_search 5556) 61.1592 Tj
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+(6863 6871 6872 7340) 83.0018 Tj
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+(5556 5585) 39.3166 Tj
+0 -56.9598 Td
+(MAXFILE 3170) 52.4222 Tj
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(SEG_TSS 1505) 52.4222 Tj
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(SEG_UCODE 1503) 61.1592 Tj
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(0771 2521 2522) 61.1592 Tj
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(strncpy 5361) 52.4222 Tj
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--8527.18 TJm
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(STS_IG32 0685) 56.7907 Tj
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(0685 0777) 39.3166 Tj
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(STS_T32A 0682) 56.7907 Tj
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(skipelem 4314) 56.7907 Tj
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(STS_TG32 0686) 56.7907 Tj
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(0686 0777) 39.3166 Tj
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(spinlock 1301) 56.7907 Tj
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(sum 5525) 34.9481 Tj
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(5525 5527 5529 5531) 83.0018 Tj
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(5532 5543 5592) 61.1592 Tj
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Q
Q
Q
@@ -3548,8 +3558,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -3564,210 +3573,210 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
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(SYS_mknod 2611) 61.1592 Tj
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(2611 2762) 39.3166 Tj
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(SYS_open 2610) 56.7907 Tj
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(2610 2763) 39.3166 Tj
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(SYS_read 2606) 56.7907 Tj
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(SYS_unlink 2612) 65.5277 Tj
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--13543.8 TJm
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--13042.1 TJm
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--8527.18 TJm
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--8527.18 TJm
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--12540.4 TJm
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--8527.18 TJm
-(0307 1965 2555 3420) 83.0018 Tj
-17.4609 -474.667 Td
-(2872 2873 2878) 61.1592 Tj
--11035.5 TJm
-(3639 3891 3916 5220) 83.0018 Tj
-0 -484.16 Td
-(tickslock 2512) 61.1592 Tj
--13042 TJm
-(5223 5262 5268 5292) 83.0018 Tj
-17.4609 -493.654 Td
-(0344 2512 2524 2553) 83.0018 Tj
--8527.18 TJm
-(6441) 17.4741 Tj
+(0302 1235 1757) 61.1592 Tj
Q
Q
q
@@ -3781,24 +3790,58 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 cross-references Page 12) 192.215 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 cross-references Page 12) 192.2146 Tj
0 -28.4801 Td
+(VER 5661) 34.9481 Tj
+-16052 TJm
+(6491) 17.4741 Tj
+17.4613 -37.9735 Td
+(5661 5723) 39.3166 Tj
+-11537.3 TJm
(wakeup1 1953) 52.4222 Tj
--14045.3 TJm
-(4785 4786) 39.3166 Tj
-17.4609 -37.9735 Td
+0 -47.4664 Td
+(wait 2053) 39.3166 Tj
+-15550.3 TJm
(1953 1968 2026 2033) 83.0018 Tj
+17.4613 -56.9598 Td
+(0303 2053 2829 6783) 83.0018 Tj
-6520.6 TJm
-(yield 1867) 43.6851 Tj
-0 -47.4668 Td
(writei 4152) 48.0537 Tj
--14547 TJm
-(0308 1867 2596) 61.1592 Tj
-17.4609 -56.9602 Td
+17.4613 -66.4531 Td
+(6812 6944 6970 6971) 83.0018 Tj
+-8527.14 TJm
(0249 4152 4274 4532) 83.0018 Tj
+17.4613 -75.9465 Td
+(7026) 17.4741 Tj
+-16052.1 TJm
+(4785 4786) 39.3166 Tj
+0 -85.4399 Td
+(waitdisk 1151) 56.7907 Tj
+-11537.1 TJm
+(xchg 0451) 39.3166 Tj
+17.4613 -94.9332 Td
+(1151 1163 1172) 61.1592 Tj
+-11035.5 TJm
+(0451 1260 1384 1415) 83.0018 Tj
+0 -104.4266 Td
+(wakeup 1965) 48.0537 Tj
+-12540.5 TJm
+(yield 1869) 43.6851 Tj
+17.4613 -113.9199 Td
+(0304 1965 2551 3419) 83.0018 Tj
+-8527.14 TJm
+(0305 1869 2592) 61.1592 Tj
+17.4613 -123.4133 Td
+(3639 3891 3916 5220) 83.0018 Tj
+-6520.6 TJm
+(_namei 4354) 48.0537 Tj
+17.4613 -132.9067 Td
+(5223 5262 5267 5290) 83.0018 Tj
+-8527.14 TJm
+(4354 4392 4398) 61.1592 Tj
Q
Q
Q
@@ -3826,8 +3869,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -3842,16 +3884,16 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/types.h Page 1) 166.004 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/types.h Page 1) 166.0035 Tj
0 -28.4801 Td
(0100 typedef unsigned int uint;) 144.161 Tj
0 -37.9735 Td
(0101 typedef unsigned short ushort;) 152.898 Tj
0 -47.4668 Td
-(0102 typedef unsigned char uchar;) 148.529 Tj
+(0102 typedef unsigned char uchar;) 148.5295 Tj
0 -56.9602 Td
(0103 ) 21.8426 Tj
0 -66.4535 Td
@@ -3864,89 +3906,89 @@ q
(0107 ) 21.8426 Tj
0 -104.427 Td
(0108 ) 21.8426 Tj
-0 -113.92 Td
+0 -113.9203 Td
(0109 ) 21.8426 Tj
-0 -123.414 Td
+0 -123.4137 Td
(0110 ) 21.8426 Tj
-0 -132.907 Td
+0 -132.9071 Td
(0111 ) 21.8426 Tj
-0 -142.4 Td
+0 -142.4004 Td
(0112 ) 21.8426 Tj
-0 -151.894 Td
+0 -151.8938 Td
(0113 ) 21.8426 Tj
-0 -161.387 Td
+0 -161.3871 Td
(0114 ) 21.8426 Tj
-0 -170.88 Td
+0 -170.8805 Td
(0115 ) 21.8426 Tj
-0 -180.374 Td
+0 -180.3739 Td
(0116 ) 21.8426 Tj
-0 -189.867 Td
+0 -189.8672 Td
(0117 ) 21.8426 Tj
-0 -199.361 Td
+0 -199.3606 Td
(0118 ) 21.8426 Tj
-0 -208.854 Td
+0 -208.8539 Td
(0119 ) 21.8426 Tj
-0 -218.347 Td
+0 -218.3473 Td
(0120 ) 21.8426 Tj
-0 -227.841 Td
+0 -227.8407 Td
(0121 ) 21.8426 Tj
0 -237.334 Td
(0122 ) 21.8426 Tj
-0 -246.827 Td
+0 -246.8274 Td
(0123 ) 21.8426 Tj
-0 -256.321 Td
+0 -256.3207 Td
(0124 ) 21.8426 Tj
-0 -265.814 Td
+0 -265.8141 Td
(0125 ) 21.8426 Tj
-0 -275.307 Td
+0 -275.3075 Td
(0126 ) 21.8426 Tj
-0 -284.801 Td
+0 -284.8008 Td
(0127 ) 21.8426 Tj
-0 -294.294 Td
+0 -294.2942 Td
(0128 ) 21.8426 Tj
-0 -303.788 Td
+0 -303.7875 Td
(0129 ) 21.8426 Tj
-0 -313.281 Td
+0 -313.2809 Td
(0130 ) 21.8426 Tj
-0 -322.774 Td
+0 -322.7743 Td
(0131 ) 21.8426 Tj
-0 -332.268 Td
+0 -332.2676 Td
(0132 ) 21.8426 Tj
0 -341.761 Td
(0133 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(0134 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(0135 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(0136 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(0137 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(0138 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(0139 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(0140 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(0141 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(0142 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(0143 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(0144 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(0145 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(0146 ) 21.8426 Tj
0 -474.668 Td
(0147 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(0148 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(0149 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 01) 34.9481 Tj
Q
Q
@@ -3961,115 +4003,115 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/param.h Page 1) 166.004 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/param.h Page 1) 166.0035 Tj
0 -28.4801 Td
-(0150 #define NPROC 64 // maximum number of processes) 262.111 Tj
+(0150 #define NPROC 64 // maximum number of processes) 262.1109 Tj
0 -37.9735 Td
(0151 #define PAGE 4096 // granularity of user-space memo\
-ry allocation) 332.007 Tj
+ry allocation) 332.0071 Tj
0 -47.4668 Td
(0152 #define KSTACKSIZE PAGE // size of per-process kernel sta\
-ck) 283.953 Tj
+ck) 283.9534 Tj
0 -56.9602 Td
-(0153 #define NCPU 8 // maximum number of CPUs) 240.268 Tj
+(0153 #define NCPU 8 // maximum number of CPUs) 240.2683 Tj
0 -66.4535 Td
-(0154 #define NOFILE 16 // open files per process) 240.268 Tj
+(0154 #define NOFILE 16 // open files per process) 240.2683 Tj
0 -75.9469 Td
-(0155 #define NFILE 100 // open files per system) 235.9 Tj
+(0155 #define NFILE 100 // open files per system) 235.8998 Tj
0 -85.4403 Td
-(0156 #define NBUF 10 // size of disk block cache) 249.005 Tj
+(0156 #define NBUF 10 // size of disk block cache) 249.0053 Tj
0 -94.9336 Td
(0157 #define NINODE 50 // maximum number of active i-nod\
-es) 283.953 Tj
+es) 283.9534 Tj
0 -104.427 Td
-(0158 #define NDEV 10 // maximum major device number) 262.111 Tj
-0 -113.92 Td
+(0158 #define NDEV 10 // maximum major device number) 262.1109 Tj
+0 -113.9203 Td
(0159 #define ROOTDEV 1 // device number of file system r\
-oot disk) 310.165 Tj
-0 -123.414 Td
+oot disk) 310.1645 Tj
+0 -123.4137 Td
(0160 ) 21.8426 Tj
-0 -132.907 Td
+0 -132.9071 Td
(0161 ) 21.8426 Tj
-0 -142.4 Td
+0 -142.4004 Td
(0162 ) 21.8426 Tj
-0 -151.894 Td
+0 -151.8938 Td
(0163 ) 21.8426 Tj
-0 -161.387 Td
+0 -161.3871 Td
(0164 ) 21.8426 Tj
-0 -170.88 Td
+0 -170.8805 Td
(0165 ) 21.8426 Tj
-0 -180.374 Td
+0 -180.3739 Td
(0166 ) 21.8426 Tj
-0 -189.867 Td
+0 -189.8672 Td
(0167 ) 21.8426 Tj
-0 -199.361 Td
+0 -199.3606 Td
(0168 ) 21.8426 Tj
-0 -208.854 Td
+0 -208.8539 Td
(0169 ) 21.8426 Tj
-0 -218.347 Td
+0 -218.3473 Td
(0170 ) 21.8426 Tj
-0 -227.841 Td
+0 -227.8407 Td
(0171 ) 21.8426 Tj
0 -237.334 Td
(0172 ) 21.8426 Tj
-0 -246.827 Td
+0 -246.8274 Td
(0173 ) 21.8426 Tj
-0 -256.321 Td
+0 -256.3207 Td
(0174 ) 21.8426 Tj
-0 -265.814 Td
+0 -265.8141 Td
(0175 ) 21.8426 Tj
-0 -275.307 Td
+0 -275.3075 Td
(0176 ) 21.8426 Tj
-0 -284.801 Td
+0 -284.8008 Td
(0177 ) 21.8426 Tj
-0 -294.294 Td
+0 -294.2942 Td
(0178 ) 21.8426 Tj
-0 -303.788 Td
+0 -303.7875 Td
(0179 ) 21.8426 Tj
-0 -313.281 Td
+0 -313.2809 Td
(0180 ) 21.8426 Tj
-0 -322.774 Td
+0 -322.7743 Td
(0181 ) 21.8426 Tj
-0 -332.268 Td
+0 -332.2676 Td
(0182 ) 21.8426 Tj
0 -341.761 Td
(0183 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(0184 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(0185 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(0186 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(0187 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(0188 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(0189 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(0190 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(0191 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(0192 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(0193 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(0194 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(0195 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(0196 ) 21.8426 Tj
0 -474.668 Td
(0197 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(0198 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(0199 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 01) 34.9481 Tj
Q
Q
@@ -4098,8 +4140,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -4114,10 +4155,10 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/defs.h Page 1) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/defs.h Page 1) 161.635 Tj
0 -28.4801 Td
(0200 struct buf;) 69.8962 Tj
0 -37.9735 Td
@@ -4136,91 +4177,91 @@ q
(0207 struct stat;) 74.2647 Tj
0 -104.427 Td
(0208 ) 21.8426 Tj
-0 -113.92 Td
+0 -113.9203 Td
(0209 // bio.c) 56.7907 Tj
-0 -123.414 Td
+0 -123.4137 Td
(0210 void binit\(void\);) 144.161 Tj
-0 -132.907 Td
-(0211 struct buf* bread\(uint, uint\);) 170.372 Tj
-0 -142.4 Td
-(0212 void brelse\(struct buf*\);) 179.109 Tj
-0 -151.894 Td
-(0213 void bwrite\(struct buf*\);) 179.109 Tj
-0 -161.387 Td
+0 -132.9071 Td
+(0211 struct buf* bread\(uint, uint\);) 170.3721 Tj
+0 -142.4004 Td
+(0212 void brelse\(struct buf*\);) 179.1091 Tj
+0 -151.8938 Td
+(0213 void bwrite\(struct buf*\);) 179.1091 Tj
+0 -161.3871 Td
(0214 ) 21.8426 Tj
-0 -170.88 Td
+0 -170.8805 Td
(0215 // console.c) 74.2647 Tj
-0 -180.374 Td
-(0216 void console_init\(void\);) 174.741 Tj
-0 -189.867 Td
-(0217 void cprintf\(char*, ...\);) 179.109 Tj
-0 -199.361 Td
-(0218 void console_intr\(int\(*\)\(void\)\);) 209.689 Tj
-0 -208.854 Td
+0 -180.3739 Td
+(0216 void console_init\(void\);) 174.7406 Tj
+0 -189.8672 Td
+(0217 void cprintf\(char*, ...\);) 179.1091 Tj
+0 -199.3606 Td
+(0218 void console_intr\(int\(*\)\(void\)\);) 209.6887 Tj
+0 -208.8539 Td
(0219 void panic\(char*\) __attribute__\(\(noreturn\)\
-\);) 262.111 Tj
-0 -218.347 Td
+\);) 262.1109 Tj
+0 -218.3473 Td
(0220 ) 21.8426 Tj
-0 -227.841 Td
+0 -227.8407 Td
(0221 // exec.c) 61.1592 Tj
0 -237.334 Td
-(0222 int exec\(char*, char**\);) 179.109 Tj
-0 -246.827 Td
+(0222 int exec\(char*, char**\);) 179.1091 Tj
+0 -246.8274 Td
(0223 ) 21.8426 Tj
-0 -256.321 Td
+0 -256.3207 Td
(0224 // file.c) 61.1592 Tj
-0 -265.814 Td
+0 -265.8141 Td
(0225 struct file* filealloc\(void\);) 161.635 Tj
-0 -275.307 Td
-(0226 void fileclose\(struct file*\);) 196.583 Tj
-0 -284.801 Td
-(0227 struct file* filedup\(struct file*\);) 187.846 Tj
-0 -294.294 Td
-(0228 void fileinit\(void\);) 157.267 Tj
-0 -303.788 Td
-(0229 int fileread\(struct file*, char*, int n\);) 253.374 Tj
-0 -313.281 Td
-(0230 int filestat\(struct file*, struct stat*\);) 253.374 Tj
-0 -322.774 Td
-(0231 int filewrite\(struct file*, char*, int n\);) 257.742 Tj
-0 -332.268 Td
+0 -275.3075 Td
+(0226 void fileclose\(struct file*\);) 196.5831 Tj
+0 -284.8008 Td
+(0227 struct file* filedup\(struct file*\);) 187.8461 Tj
+0 -294.2942 Td
+(0228 void fileinit\(void\);) 157.2665 Tj
+0 -303.7875 Td
+(0229 int fileread\(struct file*, char*, int n\);) 253.3738 Tj
+0 -313.2809 Td
+(0230 int filestat\(struct file*, struct stat*\);) 253.3738 Tj
+0 -322.7743 Td
+(0231 int filewrite\(struct file*, char*, int n\);) 257.7424 Tj
+0 -332.2676 Td
(0232 ) 21.8426 Tj
0 -341.761 Td
(0233 // fs.c) 52.4222 Tj
-0 -351.254 Td
-(0234 int dirlink\(struct inode*, char*, uint\);) 249.005 Tj
-0 -360.748 Td
-(0235 struct inode* dirlookup\(struct inode*, char*, uint*\);) 262.111 Tj
-0 -370.241 Td
-(0236 struct inode* ialloc\(uint, short\);) 179.109 Tj
-0 -379.734 Td
-(0237 struct inode* idup\(struct inode*\);) 179.109 Tj
-0 -389.228 Td
+0 -351.2543 Td
+(0234 int dirlink\(struct inode*, char*, uint\);) 249.0053 Tj
+0 -360.7477 Td
+(0235 struct inode* dirlookup\(struct inode*, char*, uint*\);) 262.1109 Tj
+0 -370.2411 Td
+(0236 struct inode* ialloc\(uint, short\);) 179.1091 Tj
+0 -379.7344 Td
+(0237 struct inode* idup\(struct inode*\);) 179.1091 Tj
+0 -389.2278 Td
(0238 void iinit\(void\);) 144.161 Tj
-0 -398.721 Td
-(0239 void ilock\(struct inode*\);) 183.478 Tj
-0 -408.214 Td
-(0240 void iput\(struct inode*\);) 179.109 Tj
-0 -417.708 Td
-(0241 void iunlock\(struct inode*\);) 192.215 Tj
-0 -427.201 Td
-(0242 void iunlockput\(struct inode*\);) 205.32 Tj
-0 -436.695 Td
-(0243 void iupdate\(struct inode*\);) 192.215 Tj
-0 -446.188 Td
-(0244 int namecmp\(const char*, const char*\);) 240.268 Tj
-0 -455.681 Td
-(0245 struct inode* namei\(char*\);) 148.529 Tj
-0 -465.175 Td
-(0246 struct inode* nameiparent\(char*, char*\);) 205.32 Tj
+0 -398.7211 Td
+(0239 void ilock\(struct inode*\);) 183.4776 Tj
+0 -408.2145 Td
+(0240 void iput\(struct inode*\);) 179.1091 Tj
+0 -417.7079 Td
+(0241 void iunlock\(struct inode*\);) 192.2146 Tj
+0 -427.2012 Td
+(0242 void iunlockput\(struct inode*\);) 205.3202 Tj
+0 -436.6946 Td
+(0243 void iupdate\(struct inode*\);) 192.2146 Tj
+0 -446.1879 Td
+(0244 int namecmp\(const char*, const char*\);) 240.2683 Tj
+0 -455.6813 Td
+(0245 struct inode* namei\(char*\);) 148.5295 Tj
+0 -465.1747 Td
+(0246 struct inode* nameiparent\(char*, char*\);) 205.3202 Tj
0 -474.668 Td
-(0247 int readi\(struct inode*, char*, uint, uint\);) 266.479 Tj
-0 -484.161 Td
-(0248 void stati\(struct inode*, struct stat*\);) 244.637 Tj
-0 -493.655 Td
+(0247 int readi\(struct inode*, char*, uint, uint\);) 266.4794 Tj
+0 -484.1614 Td
+(0248 void stati\(struct inode*, struct stat*\);) 244.6368 Tj
+0 -493.6547 Td
(0249 int writei\(struct inode*, char*, uint, uint\)\
-;) 270.848 Tj
-0 -522.135 Td
+;) 270.8479 Tj
+0 -522.1348 Td
(Sheet 02) 34.9481 Tj
Q
Q
@@ -4235,111 +4276,112 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/defs.h Page 2) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/defs.h Page 2) 161.635 Tj
0 -28.4801 Td
(0250 // ide.c) 56.7907 Tj
0 -37.9735 Td
-(0251 void ide_init\(void\);) 157.267 Tj
+(0251 void ide_init\(void\);) 157.2665 Tj
0 -47.4668 Td
-(0252 void ide_intr\(void\);) 157.267 Tj
+(0252 void ide_intr\(void\);) 157.2665 Tj
0 -56.9602 Td
-(0253 void ide_rw\(struct buf *\);) 183.478 Tj
+(0253 void ide_rw\(struct buf *\);) 183.4776 Tj
0 -66.4535 Td
(0254 ) 21.8426 Tj
0 -75.9469 Td
(0255 // ioapic.c) 69.8962 Tj
0 -85.4403 Td
-(0256 void ioapic_enable\(int irq, int cpu\);) 231.531 Tj
+(0256 void ioapic_enable\(int irq, int cpu\);) 231.5313 Tj
0 -94.9336 Td
-(0257 extern uchar ioapic_id;) 135.424 Tj
+(0257 extern uchar ioapic_id;) 135.4239 Tj
0 -104.427 Td
-(0258 void ioapic_init\(void\);) 170.372 Tj
-0 -113.92 Td
+(0258 void ioapic_init\(void\);) 170.3721 Tj
+0 -113.9203 Td
(0259 ) 21.8426 Tj
-0 -123.414 Td
+0 -123.4137 Td
(0260 // kalloc.c) 69.8962 Tj
-0 -132.907 Td
+0 -132.9071 Td
(0261 char* kalloc\(int\);) 144.161 Tj
-0 -142.4 Td
-(0262 void kfree\(char*, int\);) 170.372 Tj
-0 -151.894 Td
+0 -142.4004 Td
+(0262 void kfree\(char*, int\);) 170.3721 Tj
+0 -151.8938 Td
(0263 void kinit\(void\);) 144.161 Tj
-0 -161.387 Td
+0 -161.3871 Td
(0264 ) 21.8426 Tj
-0 -170.88 Td
+0 -170.8805 Td
(0265 // kbd.c) 56.7907 Tj
-0 -180.374 Td
-(0266 void kbd_intr\(void\);) 157.267 Tj
-0 -189.867 Td
+0 -180.3739 Td
+(0266 void kbd_intr\(void\);) 157.2665 Tj
+0 -189.8672 Td
(0267 ) 21.8426 Tj
-0 -199.361 Td
+0 -199.3606 Td
(0268 // lapic.c) 65.5277 Tj
-0 -208.854 Td
-(0269 int cpu\(void\);) 135.424 Tj
-0 -218.347 Td
-(0270 extern volatile uint* lapic;) 157.267 Tj
-0 -227.841 Td
-(0271 void lapic_disableintr\(void\);) 196.583 Tj
+0 -208.8539 Td
+(0269 int cpu\(void\);) 135.4239 Tj
+0 -218.3473 Td
+(0270 extern volatile uint* lapic;) 157.2665 Tj
+0 -227.8407 Td
+(0271 void lapic_eoi\(void\);) 161.635 Tj
0 -237.334 Td
-(0272 void lapic_enableintr\(void\);) 192.215 Tj
-0 -246.827 Td
-(0273 void lapic_eoi\(void\);) 161.635 Tj
-0 -256.321 Td
-(0274 void lapic_init\(int\);) 161.635 Tj
-0 -265.814 Td
-(0275 void lapic_startap\(uchar, uint\);) 209.689 Tj
-0 -275.307 Td
-(0276 void lapic_timerinit\(void\);) 187.846 Tj
-0 -284.801 Td
-(0277 void lapic_timerintr\(void\);) 187.846 Tj
-0 -294.294 Td
-(0278 ) 21.8426 Tj
-0 -303.788 Td
-(0279 // mp.c) 52.4222 Tj
-0 -313.281 Td
-(0280 extern int ismp;) 113.581 Tj
-0 -322.774 Td
-(0281 int mp_bcpu\(void\);) 152.898 Tj
-0 -332.268 Td
-(0282 void mp_init\(void\);) 152.898 Tj
+(0272 void lapic_init\(int\);) 161.635 Tj
+0 -246.8274 Td
+(0273 void lapic_startap\(uchar, uint\);) 209.6887 Tj
+0 -256.3207 Td
+(0274 ) 21.8426 Tj
+0 -265.8141 Td
+(0275 // mp.c) 52.4222 Tj
+0 -275.3075 Td
+(0276 extern int ismp;) 113.5814 Tj
+0 -284.8008 Td
+(0277 int mp_bcpu\(void\);) 152.898 Tj
+0 -294.2942 Td
+(0278 void mp_init\(void\);) 152.898 Tj
+0 -303.7875 Td
+(0279 void mp_startthem\(void\);) 174.7406 Tj
+0 -313.2809 Td
+(0280 ) 21.8426 Tj
+0 -322.7743 Td
+(0281 // picirq.c) 69.8962 Tj
+0 -332.2676 Td
+(0282 void pic_enable\(int\);) 161.635 Tj
0 -341.761 Td
-(0283 void mp_startthem\(void\);) 174.741 Tj
-0 -351.254 Td
+(0283 void pic_init\(void\);) 157.2665 Tj
+0 -351.2543 Td
(0284 ) 21.8426 Tj
-0 -360.748 Td
-(0285 // picirq.c) 69.8962 Tj
-0 -370.241 Td
-(0286 void pic_enable\(int\);) 161.635 Tj
-0 -379.734 Td
-(0287 void pic_init\(void\);) 157.267 Tj
-0 -389.228 Td
-(0288 ) 21.8426 Tj
-0 -398.721 Td
-(0289 // pipe.c) 61.1592 Tj
-0 -408.214 Td
-(0290 int pipealloc\(struct file**, struct file**\);) 266.479 Tj
-0 -417.708 Td
-(0291 void pipeclose\(struct pipe*, int\);) 218.426 Tj
-0 -427.201 Td
-(0292 int piperead\(struct pipe*, char*, int\);) 244.637 Tj
-0 -436.695 Td
-(0293 int pipewrite\(struct pipe*, char*, int\);) 249.005 Tj
-0 -446.188 Td
-(0294 ) 21.8426 Tj
-0 -455.681 Td
-(0295 // proc.c) 61.1592 Tj
-0 -465.175 Td
-(0296 struct proc* copyproc\(struct proc*\);) 192.215 Tj
+0 -360.7477 Td
+(0285 // pipe.c) 61.1592 Tj
+0 -370.2411 Td
+(0286 int pipealloc\(struct file**, struct file**\);) 266.4794 Tj
+0 -379.7344 Td
+(0287 void pipeclose\(struct pipe*, int\);) 218.4257 Tj
+0 -389.2278 Td
+(0288 int piperead\(struct pipe*, char*, int\);) 244.6368 Tj
+0 -398.7211 Td
+(0289 int pipewrite\(struct pipe*, char*, int\);) 249.0053 Tj
+0 -408.2145 Td
+(0290 ) 21.8426 Tj
+0 -417.7079 Td
+(0291 // proc.c) 61.1592 Tj
+0 -427.2012 Td
+(0292 struct proc* copyproc\(struct proc*\);) 192.2146 Tj
+0 -436.6946 Td
+(0293 struct proc* curproc\(void\);) 152.898 Tj
+0 -446.1879 Td
+(0294 void exit\(void\);) 139.7925 Tj
+0 -455.6813 Td
+(0295 int growproc\(int\);) 152.898 Tj
+0 -465.1747 Td
+(0296 int kill\(int\);) 135.4239 Tj
0 -474.668 Td
-(0297 void exit\(void\);) 139.792 Tj
-0 -484.161 Td
-(0298 int growproc\(int\);) 152.898 Tj
-0 -493.655 Td
-(0299 int kill\(int\);) 135.424 Tj
-0 -522.135 Td
+(0297 void pinit\(void\);) 144.161 Tj
+0 -484.1614 Td
+(0298 void procdump\(void\);) 157.2665 Tj
+0 -493.6547 Td
+(0299 void scheduler\(void\) __attribute__\(\(noretur\
+n\)\);) 275.2164 Tj
+0 -522.1348 Td
(Sheet 02) 34.9481 Tj
Q
Q
@@ -4368,8 +4410,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -4384,112 +4425,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/defs.h Page 3) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/defs.h Page 3) 161.635 Tj
0 -28.4801 Td
-(0300 void pinit\(void\);) 144.161 Tj
+(0300 void setupsegs\(struct proc*\);) 196.5831 Tj
0 -37.9735 Td
-(0301 void procdump\(void\);) 157.267 Tj
+(0301 void sleep\(void*, struct spinlock*\);) 227.1628 Tj
0 -47.4668 Td
-(0302 void scheduler\(void\) __attribute__\(\(noretur\
-n\)\);) 275.216 Tj
+(0302 void userinit\(void\);) 157.2665 Tj
0 -56.9602 Td
-(0303 void setupsegs\(struct proc*\);) 196.583 Tj
+(0303 int wait\(void\);) 139.7925 Tj
0 -66.4535 Td
-(0304 void sleep\(void*, struct spinlock*\);) 227.163 Tj
+(0304 void wakeup\(void*\);) 152.898 Tj
0 -75.9469 Td
-(0305 void userinit\(void\);) 157.267 Tj
+(0305 void yield\(void\);) 144.161 Tj
0 -85.4403 Td
-(0306 int wait\(void\);) 139.792 Tj
+(0306 ) 21.8426 Tj
0 -94.9336 Td
-(0307 void wakeup\(void*\);) 152.898 Tj
+(0307 // swtch.S) 65.5277 Tj
0 -104.427 Td
-(0308 void yield\(void\);) 144.161 Tj
-0 -113.92 Td
+(0308 void swtch\(struct context*, struct context*\);) 266.4794 Tj
+0 -113.9203 Td
(0309 ) 21.8426 Tj
-0 -123.414 Td
-(0310 // swtch.S) 65.5277 Tj
-0 -132.907 Td
-(0311 void swtch\(struct context*, struct context*\);) 266.479 Tj
-0 -142.4 Td
-(0312 ) 21.8426 Tj
-0 -151.894 Td
-(0313 // spinlock.c) 78.6333 Tj
-0 -161.387 Td
-(0314 void acquire\(struct spinlock*\);) 205.32 Tj
-0 -170.88 Td
-(0315 void getcallerpcs\(void*, uint*\);) 209.689 Tj
-0 -180.374 Td
-(0316 int holding\(struct spinlock*\);) 205.32 Tj
-0 -189.867 Td
-(0317 void initlock\(struct spinlock*, char*\);) 240.268 Tj
-0 -199.361 Td
-(0318 void release\(struct spinlock*\);) 205.32 Tj
-0 -208.854 Td
-(0319 ) 21.8426 Tj
-0 -218.347 Td
-(0320 // string.c) 69.8962 Tj
-0 -227.841 Td
-(0321 int memcmp\(const void*, const void*, uint\);) 262.111 Tj
+0 -123.4137 Td
+(0310 // spinlock.c) 78.6333 Tj
+0 -132.9071 Td
+(0311 void acquire\(struct spinlock*\);) 205.3202 Tj
+0 -142.4004 Td
+(0312 void getcallerpcs\(void*, uint*\);) 209.6887 Tj
+0 -151.8938 Td
+(0313 int holding\(struct spinlock*\);) 205.3202 Tj
+0 -161.3871 Td
+(0314 void initlock\(struct spinlock*, char*\);) 240.2683 Tj
+0 -170.8805 Td
+(0315 void release\(struct spinlock*\);) 205.3202 Tj
+0 -180.3739 Td
+(0316 void pushcli\(\);) 135.4239 Tj
+0 -189.8672 Td
+(0317 void popcli\(\);) 131.0554 Tj
+0 -199.3606 Td
+(0318 ) 21.8426 Tj
+0 -208.8539 Td
+(0319 // string.c) 69.8962 Tj
+0 -218.3473 Td
+(0320 int memcmp\(const void*, const void*, uint\);) 262.1109 Tj
+0 -227.8407 Td
+(0321 void* memmove\(void*, const void*, uint\);) 240.2683 Tj
0 -237.334 Td
-(0322 void* memmove\(void*, const void*, uint\);) 240.268 Tj
-0 -246.827 Td
-(0323 void* memset\(void*, int, uint\);) 200.952 Tj
-0 -256.321 Td
-(0324 char* safestrcpy\(char*, const char*, int\);) 249.005 Tj
-0 -265.814 Td
-(0325 int strlen\(const char*\);) 179.109 Tj
-0 -275.307 Td
-(0326 int strncmp\(const char*, const char*, uint\);) 266.479 Tj
-0 -284.801 Td
-(0327 char* strncpy\(char*, const char*, int\);) 235.9 Tj
-0 -294.294 Td
-(0328 ) 21.8426 Tj
-0 -303.788 Td
-(0329 // syscall.c) 74.2647 Tj
-0 -313.281 Td
-(0330 int argint\(int, int*\);) 170.372 Tj
-0 -322.774 Td
-(0331 int argptr\(int, char**, int\);) 200.952 Tj
-0 -332.268 Td
-(0332 int argstr\(int, char**\);) 179.109 Tj
+(0322 void* memset\(void*, int, uint\);) 200.9517 Tj
+0 -246.8274 Td
+(0323 char* safestrcpy\(char*, const char*, int\);) 249.0053 Tj
+0 -256.3207 Td
+(0324 int strlen\(const char*\);) 179.1091 Tj
+0 -265.8141 Td
+(0325 int strncmp\(const char*, const char*, uint\);) 266.4794 Tj
+0 -275.3075 Td
+(0326 char* strncpy\(char*, const char*, int\);) 235.8998 Tj
+0 -284.8008 Td
+(0327 ) 21.8426 Tj
+0 -294.2942 Td
+(0328 // syscall.c) 74.2647 Tj
+0 -303.7875 Td
+(0329 int argint\(int, int*\);) 170.3721 Tj
+0 -313.2809 Td
+(0330 int argptr\(int, char**, int\);) 200.9517 Tj
+0 -322.7743 Td
+(0331 int argstr\(int, char**\);) 179.1091 Tj
+0 -332.2676 Td
+(0332 int fetchint\(struct proc*, uint, int*\);) 244.6368 Tj
0 -341.761 Td
-(0333 int fetchint\(struct proc*, uint, int*\);) 244.637 Tj
-0 -351.254 Td
-(0334 int fetchstr\(struct proc*, uint, char**\);) 253.374 Tj
-0 -360.748 Td
-(0335 void syscall\(void\);) 152.898 Tj
-0 -370.241 Td
-(0336 ) 21.8426 Tj
-0 -379.734 Td
-(0337 // timer.c) 65.5277 Tj
-0 -389.228 Td
-(0338 void timer_init\(void\);) 166.004 Tj
-0 -398.721 Td
-(0339 ) 21.8426 Tj
-0 -408.214 Td
-(0340 // trap.c) 61.1592 Tj
-0 -417.708 Td
-(0341 void idtinit\(void\);) 152.898 Tj
-0 -427.201 Td
-(0342 extern int ticks;) 117.95 Tj
-0 -436.695 Td
-(0343 void tvinit\(void\);) 148.529 Tj
-0 -446.188 Td
-(0344 extern struct spinlock tickslock;) 166.004 Tj
-0 -455.681 Td
-(0345 ) 21.8426 Tj
-0 -465.175 Td
-(0346 // number of elements in fixed-size array) 200.952 Tj
+(0333 int fetchstr\(struct proc*, uint, char**\);) 253.3738 Tj
+0 -351.2543 Td
+(0334 void syscall\(void\);) 152.898 Tj
+0 -360.7477 Td
+(0335 ) 21.8426 Tj
+0 -370.2411 Td
+(0336 // timer.c) 65.5277 Tj
+0 -379.7344 Td
+(0337 void timer_init\(void\);) 166.0035 Tj
+0 -389.2278 Td
+(0338 ) 21.8426 Tj
+0 -398.7211 Td
+(0339 // trap.c) 61.1592 Tj
+0 -408.2145 Td
+(0340 void idtinit\(void\);) 152.898 Tj
+0 -417.7079 Td
+(0341 extern int ticks;) 117.9499 Tj
+0 -427.2012 Td
+(0342 void tvinit\(void\);) 148.5295 Tj
+0 -436.6946 Td
+(0343 extern struct spinlock tickslock;) 166.0035 Tj
+0 -446.1879 Td
+(0344 ) 21.8426 Tj
+0 -455.6813 Td
+(0345 // number of elements in fixed-size array) 200.9517 Tj
+0 -465.1747 Td
+(0346 #define NELEM\(x\) \(sizeof\(x\)/sizeof\(\(x\)[0]\)\)) 209.6887 Tj
0 -474.668 Td
-(0347 #define NELEM\(x\) \(sizeof\(x\)/sizeof\(\(x\)[0]\)\)) 209.689 Tj
-0 -484.161 Td
+(0347 ) 21.8426 Tj
+0 -484.1614 Td
(0348 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(0349 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 03) 34.9481 Tj
Q
Q
@@ -4504,116 +4544,116 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/x86.h Page 1) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/x86.h Page 1) 157.2665 Tj
0 -28.4801 Td
-(0350 // Special assembly routines to access x86-specific) 244.637 Tj
+(0350 // Routines to let C code use special x86 instructions.) 262.1109 Tj
0 -37.9735 Td
-(0351 // hardware instructions.) 131.055 Tj
+(0351 ) 21.8426 Tj
0 -47.4668 Td
-(0352 ) 21.8426 Tj
+(0352 static inline uchar) 104.8443 Tj
0 -56.9602 Td
-(0353 static inline uchar) 104.844 Tj
+(0353 inb\(ushort port\)) 91.7388 Tj
0 -66.4535 Td
-(0354 inb\(ushort port\)) 91.7388 Tj
+(0354 {) 26.2111 Tj
0 -75.9469 Td
-(0355 {) 26.2111 Tj
+(0355 uchar data;) 78.6333 Tj
0 -85.4403 Td
-(0356 uchar data;) 78.6333 Tj
+(0356 ) 21.8426 Tj
0 -94.9336 Td
-(0357 ) 21.8426 Tj
+(0357 asm volatile\("in %1,%0" : "=a" \(data\) : "d" \(port\)\)\
+;) 257.7424 Tj
0 -104.427 Td
-(0358 asm volatile\("in %1,%0" : "=a" \(data\) : "d" \(port\)\)\
-;) 257.742 Tj
-0 -113.92 Td
-(0359 return data;) 83.0018 Tj
-0 -123.414 Td
-(0360 }) 26.2111 Tj
-0 -132.907 Td
-(0361 ) 21.8426 Tj
-0 -142.4 Td
-(0362 static inline void) 100.476 Tj
-0 -151.894 Td
-(0363 insl\(int port, void *addr, int cnt\)) 174.741 Tj
-0 -161.387 Td
-(0364 {) 26.2111 Tj
-0 -170.88 Td
-(0365 asm volatile\("cld\\n\\trepne\\n\\tinsl" :) 209.689 Tj
-0 -180.374 Td
-(0366 "=D" \(addr\), "=c" \(cnt\) :) 227.163 Tj
-0 -189.867 Td
-(0367 "d" \(port\), "0" \(addr\), "1" \(cnt\)\
- :) 262.111 Tj
-0 -199.361 Td
-(0368 "memory", "cc"\);) 174.741 Tj
-0 -208.854 Td
-(0369 }) 26.2111 Tj
-0 -218.347 Td
-(0370 ) 21.8426 Tj
-0 -227.841 Td
-(0371 static inline void) 100.476 Tj
+(0358 return data;) 83.0018 Tj
+0 -113.9203 Td
+(0359 }) 26.2111 Tj
+0 -123.4137 Td
+(0360 ) 21.8426 Tj
+0 -132.9071 Td
+(0361 static inline void) 100.4758 Tj
+0 -142.4004 Td
+(0362 insl\(int port, void *addr, int cnt\)) 174.7406 Tj
+0 -151.8938 Td
+(0363 {) 26.2111 Tj
+0 -161.3871 Td
+(0364 asm volatile\("cld\\n\\trepne\\n\\tinsl" :) 209.6887 Tj
+0 -170.8805 Td
+(0365 "=D" \(addr\), "=c" \(cnt\) :) 227.1628 Tj
+0 -180.3739 Td
+(0366 "d" \(port\), "0" \(addr\), "1" \(cnt\)\
+ :) 262.1109 Tj
+0 -189.8672 Td
+(0367 "memory", "cc"\);) 174.7406 Tj
+0 -199.3606 Td
+(0368 }) 26.2111 Tj
+0 -208.8539 Td
+(0369 ) 21.8426 Tj
+0 -218.3473 Td
+(0370 static inline void) 100.4758 Tj
+0 -227.8407 Td
+(0371 outb\(ushort port, uchar data\)) 148.5295 Tj
0 -237.334 Td
-(0372 outb\(ushort port, uchar data\)) 148.529 Tj
-0 -246.827 Td
-(0373 {) 26.2111 Tj
-0 -256.321 Td
-(0374 asm volatile\("out %0,%1" : : "a" \(data\), "d" \(port\)\
-\);) 262.111 Tj
-0 -265.814 Td
-(0375 }) 26.2111 Tj
-0 -275.307 Td
-(0376 ) 21.8426 Tj
-0 -284.801 Td
-(0377 static inline void) 100.476 Tj
-0 -294.294 Td
-(0378 outw\(ushort port, ushort data\)) 152.898 Tj
-0 -303.788 Td
-(0379 {) 26.2111 Tj
-0 -313.281 Td
-(0380 asm volatile\("out %0,%1" : : "a" \(data\), "d" \(port\)\
-\);) 262.111 Tj
-0 -322.774 Td
-(0381 }) 26.2111 Tj
-0 -332.268 Td
-(0382 ) 21.8426 Tj
+(0372 {) 26.2111 Tj
+0 -246.8274 Td
+(0373 asm volatile\("out %0,%1" : : "a" \(data\), "d" \(port\)\
+\);) 262.1109 Tj
+0 -256.3207 Td
+(0374 }) 26.2111 Tj
+0 -265.8141 Td
+(0375 ) 21.8426 Tj
+0 -275.3075 Td
+(0376 static inline void) 100.4758 Tj
+0 -284.8008 Td
+(0377 outw\(ushort port, ushort data\)) 152.898 Tj
+0 -294.2942 Td
+(0378 {) 26.2111 Tj
+0 -303.7875 Td
+(0379 asm volatile\("out %0,%1" : : "a" \(data\), "d" \(port\)\
+\);) 262.1109 Tj
+0 -313.2809 Td
+(0380 }) 26.2111 Tj
+0 -322.7743 Td
+(0381 ) 21.8426 Tj
+0 -332.2676 Td
+(0382 static inline void) 100.4758 Tj
0 -341.761 Td
-(0383 static inline void) 100.476 Tj
-0 -351.254 Td
-(0384 outsl\(int port, const void *addr, int cnt\)) 205.32 Tj
-0 -360.748 Td
-(0385 {) 26.2111 Tj
-0 -370.241 Td
-(0386 asm volatile\("cld\\n\\trepne\\n\\toutsl" :) 209.689 Tj
-0 -379.734 Td
-(0387 "=S" \(addr\), "=c" \(cnt\) :) 227.163 Tj
-0 -389.228 Td
-(0388 "d" \(port\), "0" \(addr\), "1" \(cnt\)\
- :) 262.111 Tj
-0 -398.721 Td
-(0389 "cc"\);) 131.055 Tj
-0 -408.214 Td
-(0390 }) 26.2111 Tj
-0 -417.708 Td
-(0391 ) 21.8426 Tj
-0 -427.201 Td
-(0392 ) 21.8426 Tj
-0 -436.695 Td
-(0393 ) 21.8426 Tj
-0 -446.188 Td
-(0394 ) 21.8426 Tj
-0 -455.681 Td
+(0383 outsl\(int port, const void *addr, int cnt\)) 205.3202 Tj
+0 -351.2543 Td
+(0384 {) 26.2111 Tj
+0 -360.7477 Td
+(0385 asm volatile\("cld\\n\\trepne\\n\\toutsl" :) 209.6887 Tj
+0 -370.2411 Td
+(0386 "=S" \(addr\), "=c" \(cnt\) :) 227.1628 Tj
+0 -379.7344 Td
+(0387 "d" \(port\), "0" \(addr\), "1" \(cnt\)\
+ :) 262.1109 Tj
+0 -389.2278 Td
+(0388 "cc"\);) 131.0554 Tj
+0 -398.7211 Td
+(0389 }) 26.2111 Tj
+0 -408.2145 Td
+(0390 ) 21.8426 Tj
+0 -417.7079 Td
+(0391 static inline uint) 100.4758 Tj
+0 -427.2012 Td
+(0392 read_ebp\(void\)) 83.0018 Tj
+0 -436.6946 Td
+(0393 {) 26.2111 Tj
+0 -446.1879 Td
+(0394 uint ebp;) 69.8962 Tj
+0 -455.6813 Td
(0395 ) 21.8426 Tj
-0 -465.175 Td
-(0396 ) 21.8426 Tj
+0 -465.1747 Td
+(0396 asm volatile\("movl %%ebp, %0" : "=a" \(ebp\)\);) 222.7942 Tj
0 -474.668 Td
-(0397 ) 21.8426 Tj
-0 -484.161 Td
-(0398 ) 21.8426 Tj
-0 -493.655 Td
+(0397 return ebp;) 78.6333 Tj
+0 -484.1614 Td
+(0398 }) 26.2111 Tj
+0 -493.6547 Td
(0399 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 03) 34.9481 Tj
Q
Q
@@ -4642,8 +4682,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -4658,111 +4697,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/x86.h Page 2) 157.267 Tj
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0 -28.4801 Td
(0400 struct segdesc;) 87.3703 Tj
0 -37.9735 Td
(0401 ) 21.8426 Tj
0 -47.4668 Td
-(0402 static inline void) 100.476 Tj
+(0402 static inline void) 100.4758 Tj
0 -56.9602 Td
-(0403 lgdt\(struct segdesc *p, int size\)) 166.004 Tj
+(0403 lgdt\(struct segdesc *p, int size\)) 166.0035 Tj
0 -66.4535 Td
(0404 {) 26.2111 Tj
0 -75.9469 Td
-(0405 volatile ushort pd[3];) 126.687 Tj
+(0405 volatile ushort pd[3];) 126.6869 Tj
0 -85.4403 Td
(0406 ) 21.8426 Tj
0 -94.9336 Td
(0407 pd[0] = size-1;) 96.1073 Tj
0 -104.427 Td
-(0408 pd[1] = \(uint\)p;) 100.476 Tj
-0 -113.92 Td
-(0409 pd[2] = \(uint\)p >> 16;) 126.687 Tj
-0 -123.414 Td
+(0408 pd[1] = \(uint\)p;) 100.4758 Tj
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+(0409 pd[2] = \(uint\)p >> 16;) 126.6869 Tj
+0 -123.4137 Td
(0410 ) 21.8426 Tj
-0 -132.907 Td
-(0411 asm volatile\("lgdt \(%0\)" : : "r" \(pd\)\);) 200.952 Tj
-0 -142.4 Td
+0 -132.9071 Td
+(0411 asm volatile\("lgdt \(%0\)" : : "r" \(pd\)\);) 200.9517 Tj
+0 -142.4004 Td
(0412 }) 26.2111 Tj
-0 -151.894 Td
+0 -151.8938 Td
(0413 ) 21.8426 Tj
-0 -161.387 Td
+0 -161.3871 Td
(0414 struct gatedesc;) 91.7388 Tj
-0 -170.88 Td
+0 -170.8805 Td
(0415 ) 21.8426 Tj
-0 -180.374 Td
-(0416 static inline void) 100.476 Tj
-0 -189.867 Td
-(0417 lidt\(struct gatedesc *p, int size\)) 170.372 Tj
-0 -199.361 Td
+0 -180.3739 Td
+(0416 static inline void) 100.4758 Tj
+0 -189.8672 Td
+(0417 lidt\(struct gatedesc *p, int size\)) 170.3721 Tj
+0 -199.3606 Td
(0418 {) 26.2111 Tj
-0 -208.854 Td
-(0419 volatile ushort pd[3];) 126.687 Tj
-0 -218.347 Td
+0 -208.8539 Td
+(0419 volatile ushort pd[3];) 126.6869 Tj
+0 -218.3473 Td
(0420 ) 21.8426 Tj
-0 -227.841 Td
+0 -227.8407 Td
(0421 pd[0] = size-1;) 96.1073 Tj
0 -237.334 Td
-(0422 pd[1] = \(uint\)p;) 100.476 Tj
-0 -246.827 Td
-(0423 pd[2] = \(uint\)p >> 16;) 126.687 Tj
-0 -256.321 Td
+(0422 pd[1] = \(uint\)p;) 100.4758 Tj
+0 -246.8274 Td
+(0423 pd[2] = \(uint\)p >> 16;) 126.6869 Tj
+0 -256.3207 Td
(0424 ) 21.8426 Tj
-0 -265.814 Td
-(0425 asm volatile\("lidt \(%0\)" : : "r" \(pd\)\);) 200.952 Tj
-0 -275.307 Td
+0 -265.8141 Td
+(0425 asm volatile\("lidt \(%0\)" : : "r" \(pd\)\);) 200.9517 Tj
+0 -275.3075 Td
(0426 }) 26.2111 Tj
-0 -284.801 Td
+0 -284.8008 Td
(0427 ) 21.8426 Tj
-0 -294.294 Td
-(0428 static inline void) 100.476 Tj
-0 -303.788 Td
+0 -294.2942 Td
+(0428 static inline void) 100.4758 Tj
+0 -303.7875 Td
(0429 ltr\(ushort sel\)) 87.3703 Tj
-0 -313.281 Td
+0 -313.2809 Td
(0430 {) 26.2111 Tj
-0 -322.774 Td
-(0431 asm volatile\("ltr %0" : : "r" \(sel\)\);) 192.215 Tj
-0 -332.268 Td
+0 -322.7743 Td
+(0431 asm volatile\("ltr %0" : : "r" \(sel\)\);) 192.2146 Tj
+0 -332.2676 Td
(0432 }) 26.2111 Tj
0 -341.761 Td
(0433 ) 21.8426 Tj
-0 -351.254 Td
-(0434 static inline uint) 100.476 Tj
-0 -360.748 Td
+0 -351.2543 Td
+(0434 static inline uint) 100.4758 Tj
+0 -360.7477 Td
(0435 read_eflags\(void\)) 96.1073 Tj
-0 -370.241 Td
+0 -370.2411 Td
(0436 {) 26.2111 Tj
-0 -379.734 Td
+0 -379.7344 Td
(0437 uint eflags;) 83.0018 Tj
-0 -389.228 Td
-(0438 asm volatile\("pushfl; popl %0" : "=r" \(eflags\)\);) 240.268 Tj
-0 -398.721 Td
+0 -389.2278 Td
+(0438 asm volatile\("pushfl; popl %0" : "=r" \(eflags\)\);) 240.2683 Tj
+0 -398.7211 Td
(0439 return eflags;) 91.7388 Tj
-0 -408.214 Td
+0 -408.2145 Td
(0440 }) 26.2111 Tj
-0 -417.708 Td
+0 -417.7079 Td
(0441 ) 21.8426 Tj
-0 -427.201 Td
-(0442 static inline void) 100.476 Tj
-0 -436.695 Td
-(0443 write_eflags\(uint eflags\)) 131.055 Tj
-0 -446.188 Td
+0 -427.2012 Td
+(0442 static inline void) 100.4758 Tj
+0 -436.6946 Td
+(0443 write_eflags\(uint eflags\)) 131.0554 Tj
+0 -446.1879 Td
(0444 {) 26.2111 Tj
-0 -455.681 Td
-(0445 asm volatile\("pushl %0; popfl" : : "r" \(eflags\)\);) 244.637 Tj
-0 -465.175 Td
+0 -455.6813 Td
+(0445 asm volatile\("pushl %0; popfl" : : "r" \(eflags\)\);) 244.6368 Tj
+0 -465.1747 Td
(0446 }) 26.2111 Tj
0 -474.668 Td
(0447 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(0448 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(0449 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 04) 34.9481 Tj
Q
Q
@@ -4777,115 +4816,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/x86.h Page 3) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/x86.h Page 3) 157.2665 Tj
0 -28.4801 Td
-(0450 static inline void) 100.476 Tj
+(0450 static inline uint) 100.4758 Tj
0 -37.9735 Td
-(0451 cpuid\(uint info, uint *eaxp, uint *ebxp, uint *ecxp, uint\
- *edxp\)) 301.427 Tj
+(0451 xchg\(volatile uint *addr, uint newval\)) 187.8461 Tj
0 -47.4668 Td
(0452 {) 26.2111 Tj
0 -56.9602 Td
-(0453 uint eax, ebx, ecx, edx;) 135.424 Tj
+(0453 uint result;) 83.0018 Tj
0 -66.4535 Td
(0454 ) 21.8426 Tj
0 -75.9469 Td
-(0455 asm volatile\("cpuid" :) 126.687 Tj
+(0455 // The + in "+m" denotes a read-modify-write operand.) 262.1109 Tj
0 -85.4403 Td
-(0456 "=a" \(eax\), "=b" \(ebx\), "=c" \(ecx\), "\
-=d" \(edx\) :) 297.059 Tj
+(0456 asm volatile\("lock; xchgl %0, %1" :) 183.4776 Tj
0 -94.9336 Td
-(0457 "a" \(info\)\);) 139.792 Tj
+(0457 "+m" \(*addr\), "=a" \(result\) :) 214.0572 Tj
0 -104.427 Td
-(0458 if\(eaxp\)) 65.5277 Tj
-0 -113.92 Td
-(0459 *eaxp = eax;) 91.7388 Tj
-0 -123.414 Td
-(0460 if\(ebxp\)) 65.5277 Tj
-0 -132.907 Td
-(0461 *ebxp = ebx;) 91.7388 Tj
-0 -142.4 Td
-(0462 if\(ecxp\)) 65.5277 Tj
-0 -151.894 Td
-(0463 *ecxp = ecx;) 91.7388 Tj
-0 -161.387 Td
-(0464 if\(edxp\)) 65.5277 Tj
-0 -170.88 Td
-(0465 *edxp = edx;) 91.7388 Tj
-0 -180.374 Td
-(0466 }) 26.2111 Tj
-0 -189.867 Td
-(0467 ) 21.8426 Tj
-0 -199.361 Td
-(0468 static inline uint) 100.476 Tj
-0 -208.854 Td
-(0469 cmpxchg\(uint oldval, uint newval, volatile uint* lock_add\
-r\)) 279.585 Tj
-0 -218.347 Td
-(0470 {) 26.2111 Tj
-0 -227.841 Td
-(0471 uint result;) 83.0018 Tj
+(0458 "1" \(newval\) :) 148.5295 Tj
+0 -113.9203 Td
+(0459 "cc"\);) 113.5814 Tj
+0 -123.4137 Td
+(0460 return result;) 91.7388 Tj
+0 -132.9071 Td
+(0461 }) 26.2111 Tj
+0 -142.4004 Td
+(0462 ) 21.8426 Tj
+0 -151.8938 Td
+(0463 static inline void) 100.4758 Tj
+0 -161.3871 Td
+(0464 cli\(void\)) 61.1592 Tj
+0 -170.8805 Td
+(0465 {) 26.2111 Tj
+0 -180.3739 Td
+(0466 asm volatile\("cli"\);) 117.9499 Tj
+0 -189.8672 Td
+(0467 }) 26.2111 Tj
+0 -199.3606 Td
+(0468 ) 21.8426 Tj
+0 -208.8539 Td
+(0469 static inline void) 100.4758 Tj
+0 -218.3473 Td
+(0470 sti\(void\)) 61.1592 Tj
+0 -227.8407 Td
+(0471 {) 26.2111 Tj
0 -237.334 Td
-(0472 ) 21.8426 Tj
-0 -246.827 Td
-(0473 // The + in "+m" denotes a read-modify-write operand.) 262.111 Tj
-0 -256.321 Td
-(0474 asm volatile\("lock; cmpxchgl %2, %0" :) 196.583 Tj
-0 -265.814 Td
-(0475 "+m" \(*lock_addr\), "=a" \(result\)\
- :) 270.848 Tj
-0 -275.307 Td
-(0476 "r"\(newval\), "1"\(oldval\) :) 235.9 Tj
-0 -284.801 Td
-(0477 "cc"\);) 148.529 Tj
-0 -294.294 Td
-(0478 return result;) 91.7388 Tj
-0 -303.788 Td
-(0479 }) 26.2111 Tj
-0 -313.281 Td
-(0480 ) 21.8426 Tj
-0 -322.774 Td
-(0481 static inline void) 100.476 Tj
-0 -332.268 Td
-(0482 cli\(void\)) 61.1592 Tj
+(0472 asm volatile\("sti"\);) 117.9499 Tj
+0 -246.8274 Td
+(0473 }) 26.2111 Tj
+0 -256.3207 Td
+(0474 ) 21.8426 Tj
+0 -265.8141 Td
+(0475 // Layout of the trap frame built on the stack by the) 253.3738 Tj
+0 -275.3075 Td
+(0476 // hardware and by trapasm.S, and passed to trap\(\).) 244.6368 Tj
+0 -284.8008 Td
+(0477 struct trapframe {) 100.4758 Tj
+0 -294.2942 Td
+(0478 // registers as pushed by pusha) 166.0035 Tj
+0 -303.7875 Td
+(0479 uint edi;) 69.8962 Tj
+0 -313.2809 Td
+(0480 uint esi;) 69.8962 Tj
+0 -322.7743 Td
+(0481 uint ebp;) 69.8962 Tj
+0 -332.2676 Td
+(0482 uint oesp; // useless & ignored) 187.8461 Tj
0 -341.761 Td
-(0483 {) 26.2111 Tj
-0 -351.254 Td
-(0484 asm volatile\("cli"\);) 117.95 Tj
-0 -360.748 Td
-(0485 }) 26.2111 Tj
-0 -370.241 Td
-(0486 ) 21.8426 Tj
-0 -379.734 Td
-(0487 static inline void) 100.476 Tj
-0 -389.228 Td
-(0488 sti\(void\)) 61.1592 Tj
-0 -398.721 Td
-(0489 {) 26.2111 Tj
-0 -408.214 Td
-(0490 asm volatile\("sti"\);) 117.95 Tj
-0 -417.708 Td
-(0491 }) 26.2111 Tj
-0 -427.201 Td
-(0492 ) 21.8426 Tj
-0 -436.695 Td
-(0493 ) 21.8426 Tj
-0 -446.188 Td
+(0483 uint ebx;) 69.8962 Tj
+0 -351.2543 Td
+(0484 uint edx;) 69.8962 Tj
+0 -360.7477 Td
+(0485 uint ecx;) 69.8962 Tj
+0 -370.2411 Td
+(0486 uint eax;) 69.8962 Tj
+0 -379.7344 Td
+(0487 ) 21.8426 Tj
+0 -389.2278 Td
+(0488 // rest of trap frame) 122.3184 Tj
+0 -398.7211 Td
+(0489 ushort es;) 74.2647 Tj
+0 -408.2145 Td
+(0490 ushort padding1;) 100.4758 Tj
+0 -417.7079 Td
+(0491 ushort ds;) 74.2647 Tj
+0 -427.2012 Td
+(0492 ushort padding2;) 100.4758 Tj
+0 -436.6946 Td
+(0493 uint trapno;) 83.0018 Tj
+0 -446.1879 Td
(0494 ) 21.8426 Tj
-0 -455.681 Td
-(0495 ) 21.8426 Tj
-0 -465.175 Td
-(0496 ) 21.8426 Tj
+0 -455.6813 Td
+(0495 // below here defined by x86 hardware) 192.2146 Tj
+0 -465.1747 Td
+(0496 uint err;) 69.8962 Tj
0 -474.668 Td
-(0497 ) 21.8426 Tj
-0 -484.161 Td
-(0498 ) 21.8426 Tj
-0 -493.655 Td
-(0499 ) 21.8426 Tj
-0 -522.135 Td
+(0497 uint eip;) 69.8962 Tj
+0 -484.1614 Td
+(0498 ushort cs;) 74.2647 Tj
+0 -493.6547 Td
+(0499 ushort padding3;) 100.4758 Tj
+0 -522.1348 Td
(Sheet 04) 34.9481 Tj
Q
Q
@@ -4914,8 +4949,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -4930,113 +4964,112 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/x86.h Page 4) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/x86.h Page 4) 157.2665 Tj
0 -28.4801 Td
-(0500 // Layout of the trap frame on the stack upon entry to tra\
-p.) 283.953 Tj
+(0500 uint eflags;) 83.0018 Tj
0 -37.9735 Td
-(0501 struct trapframe {) 100.476 Tj
+(0501 ) 21.8426 Tj
0 -47.4668 Td
-(0502 // registers as pushed by pusha) 166.004 Tj
+(0502 // below here only when crossing rings, such as from use\
+r to kernel) 323.2701 Tj
0 -56.9602 Td
-(0503 uint edi;) 69.8962 Tj
+(0503 uint esp;) 69.8962 Tj
0 -66.4535 Td
-(0504 uint esi;) 69.8962 Tj
+(0504 ushort ss;) 74.2647 Tj
0 -75.9469 Td
-(0505 uint ebp;) 69.8962 Tj
+(0505 ushort padding4;) 100.4758 Tj
0 -85.4403 Td
-(0506 uint oesp; // useless & ignored) 187.846 Tj
+(0506 };) 30.5796 Tj
0 -94.9336 Td
-(0507 uint ebx;) 69.8962 Tj
+(0507 ) 21.8426 Tj
0 -104.427 Td
-(0508 uint edx;) 69.8962 Tj
-0 -113.92 Td
-(0509 uint ecx;) 69.8962 Tj
-0 -123.414 Td
-(0510 uint eax;) 69.8962 Tj
-0 -132.907 Td
+(0508 ) 21.8426 Tj
+0 -113.9203 Td
+(0509 ) 21.8426 Tj
+0 -123.4137 Td
+(0510 ) 21.8426 Tj
+0 -132.9071 Td
(0511 ) 21.8426 Tj
-0 -142.4 Td
-(0512 // rest of trap frame) 122.318 Tj
-0 -151.894 Td
-(0513 ushort es;) 74.2647 Tj
-0 -161.387 Td
-(0514 ushort padding1;) 100.476 Tj
-0 -170.88 Td
-(0515 ushort ds;) 74.2647 Tj
-0 -180.374 Td
-(0516 ushort padding2;) 100.476 Tj
-0 -189.867 Td
-(0517 uint trapno;) 83.0018 Tj
-0 -199.361 Td
+0 -142.4004 Td
+(0512 ) 21.8426 Tj
+0 -151.8938 Td
+(0513 ) 21.8426 Tj
+0 -161.3871 Td
+(0514 ) 21.8426 Tj
+0 -170.8805 Td
+(0515 ) 21.8426 Tj
+0 -180.3739 Td
+(0516 ) 21.8426 Tj
+0 -189.8672 Td
+(0517 ) 21.8426 Tj
+0 -199.3606 Td
(0518 ) 21.8426 Tj
-0 -208.854 Td
-(0519 // below here defined by x86 hardware) 192.215 Tj
-0 -218.347 Td
-(0520 uint err;) 69.8962 Tj
-0 -227.841 Td
-(0521 uint eip;) 69.8962 Tj
+0 -208.8539 Td
+(0519 ) 21.8426 Tj
+0 -218.3473 Td
+(0520 ) 21.8426 Tj
+0 -227.8407 Td
+(0521 ) 21.8426 Tj
0 -237.334 Td
-(0522 ushort cs;) 74.2647 Tj
-0 -246.827 Td
-(0523 ushort padding3;) 100.476 Tj
-0 -256.321 Td
-(0524 uint eflags;) 83.0018 Tj
-0 -265.814 Td
+(0522 ) 21.8426 Tj
+0 -246.8274 Td
+(0523 ) 21.8426 Tj
+0 -256.3207 Td
+(0524 ) 21.8426 Tj
+0 -265.8141 Td
(0525 ) 21.8426 Tj
-0 -275.307 Td
-(0526 // below here only when crossing rings, such as from use\
-r to kernel) 323.27 Tj
-0 -284.801 Td
-(0527 uint esp;) 69.8962 Tj
-0 -294.294 Td
-(0528 ushort ss;) 74.2647 Tj
-0 -303.788 Td
-(0529 ushort padding4;) 100.476 Tj
-0 -313.281 Td
-(0530 };) 30.5796 Tj
-0 -322.774 Td
+0 -275.3075 Td
+(0526 ) 21.8426 Tj
+0 -284.8008 Td
+(0527 ) 21.8426 Tj
+0 -294.2942 Td
+(0528 ) 21.8426 Tj
+0 -303.7875 Td
+(0529 ) 21.8426 Tj
+0 -313.2809 Td
+(0530 ) 21.8426 Tj
+0 -322.7743 Td
(0531 ) 21.8426 Tj
-0 -332.268 Td
+0 -332.2676 Td
(0532 ) 21.8426 Tj
0 -341.761 Td
(0533 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(0534 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(0535 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(0536 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(0537 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(0538 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(0539 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(0540 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(0541 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(0542 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(0543 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(0544 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(0545 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(0546 ) 21.8426 Tj
0 -474.668 Td
(0547 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(0548 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(0549 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 05) 34.9481 Tj
Q
Q
@@ -5051,14 +5084,14 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/asm.h Page 1) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/asm.h Page 1) 157.2665 Tj
0 -28.4801 Td
(0550 //) 30.5796 Tj
0 -37.9735 Td
-(0551 // macros to create x86 segments from assembler) 227.163 Tj
+(0551 // assembler macros to create x86 segments) 205.3202 Tj
0 -47.4668 Td
(0552 //) 30.5796 Tj
0 -56.9602 Td
@@ -5070,102 +5103,102 @@ q
(0555 .word 0, 0; \
\\) 305.796 Tj
0 -85.4403 Td
-(0556 .byte 0, 0, 0, 0) 126.687 Tj
+(0556 .byte 0, 0, 0, 0) 126.6869 Tj
0 -94.9336 Td
(0557 ) 21.8426 Tj
0 -104.427 Td
(0558 #define SEG_ASM\(type,base,lim\) \
\\) 305.796 Tj
-0 -113.92 Td
+0 -113.9203 Td
(0559 .word \(\(\(lim\) >> 12\) & 0xffff\), \(\(base\) &\
0xffff\); \\) 305.796 Tj
-0 -123.414 Td
+0 -123.4137 Td
(0560 .byte \(\(\(base\) >> 16\) & 0xff\), \(0x90 | \(ty\
pe\)\), \\) 305.796 Tj
-0 -132.907 Td
+0 -132.9071 Td
(0561 \(0xC0 | \(\(\(lim\) >> 28\) & 0xf\)\), \(\
-\(\(base\) >> 24\) & 0xff\)) 332.007 Tj
-0 -142.4 Td
+\(\(base\) >> 24\) & 0xff\)) 332.0071 Tj
+0 -142.4004 Td
(0562 ) 21.8426 Tj
-0 -151.894 Td
-(0563 #define STA_X 0x8 // Executable segment) 235.9 Tj
-0 -161.387 Td
+0 -151.8938 Td
+(0563 #define STA_X 0x8 // Executable segment) 235.8998 Tj
+0 -161.3871 Td
(0564 #define STA_E 0x4 // Expand down \(non-executabl\
-e segments\)) 318.902 Tj
-0 -170.88 Td
+e segments\)) 318.9016 Tj
+0 -170.8805 Td
(0565 #define STA_C 0x4 // Conforming code segment \(e\
-xecutable only\)) 336.376 Tj
-0 -180.374 Td
+xecutable only\)) 336.3756 Tj
+0 -180.3739 Td
(0566 #define STA_W 0x2 // Writeable \(non-executable \
-segments\)) 310.165 Tj
-0 -189.867 Td
+segments\)) 310.1645 Tj
+0 -189.8672 Td
(0567 #define STA_R 0x2 // Readable \(executable segme\
nts\)) 288.322 Tj
-0 -199.361 Td
-(0568 #define STA_A 0x1 // Accessed) 192.215 Tj
-0 -208.854 Td
+0 -199.3606 Td
+(0568 #define STA_A 0x1 // Accessed) 192.2146 Tj
+0 -208.8539 Td
(0569 ) 21.8426 Tj
-0 -218.347 Td
+0 -218.3473 Td
(0570 ) 21.8426 Tj
-0 -227.841 Td
+0 -227.8407 Td
(0571 ) 21.8426 Tj
0 -237.334 Td
(0572 ) 21.8426 Tj
-0 -246.827 Td
+0 -246.8274 Td
(0573 ) 21.8426 Tj
-0 -256.321 Td
+0 -256.3207 Td
(0574 ) 21.8426 Tj
-0 -265.814 Td
+0 -265.8141 Td
(0575 ) 21.8426 Tj
-0 -275.307 Td
+0 -275.3075 Td
(0576 ) 21.8426 Tj
-0 -284.801 Td
+0 -284.8008 Td
(0577 ) 21.8426 Tj
-0 -294.294 Td
+0 -294.2942 Td
(0578 ) 21.8426 Tj
-0 -303.788 Td
+0 -303.7875 Td
(0579 ) 21.8426 Tj
-0 -313.281 Td
+0 -313.2809 Td
(0580 ) 21.8426 Tj
-0 -322.774 Td
+0 -322.7743 Td
(0581 ) 21.8426 Tj
-0 -332.268 Td
+0 -332.2676 Td
(0582 ) 21.8426 Tj
0 -341.761 Td
(0583 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(0584 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(0585 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(0586 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(0587 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(0588 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(0589 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(0590 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(0591 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(0592 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(0593 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(0594 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(0595 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(0596 ) 21.8426 Tj
0 -474.668 Td
(0597 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(0598 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(0599 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 05) 34.9481 Tj
Q
Q
@@ -5194,8 +5227,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -5210,123 +5242,123 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/mmu.h Page 1) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/mmu.h Page 1) 157.2665 Tj
0 -28.4801 Td
-(0600 // This file contains definitions for the) 200.952 Tj
+(0600 // This file contains definitions for the) 200.9517 Tj
0 -37.9735 Td
-(0601 // x86 memory management unit \(MMU\).) 179.109 Tj
+(0601 // x86 memory management unit \(MMU\).) 179.1091 Tj
0 -47.4668 Td
(0602 ) 21.8426 Tj
0 -56.9602 Td
-(0603 // Eflags register) 100.476 Tj
+(0603 // Eflags register) 100.4758 Tj
0 -66.4535 Td
-(0604 #define FL_CF 0x00000001 // Carry Flag) 253.374 Tj
+(0604 #define FL_CF 0x00000001 // Carry Flag) 253.3738 Tj
0 -75.9469 Td
-(0605 #define FL_PF 0x00000004 // Parity Flag) 257.742 Tj
+(0605 #define FL_PF 0x00000004 // Parity Flag) 257.7424 Tj
0 -85.4403 Td
(0606 #define FL_AF 0x00000010 // Auxiliary carry\
Flag) 297.059 Tj
0 -94.9336 Td
-(0607 #define FL_ZF 0x00000040 // Zero Flag) 249.005 Tj
+(0607 #define FL_ZF 0x00000040 // Zero Flag) 249.0053 Tj
0 -104.427 Td
-(0608 #define FL_SF 0x00000080 // Sign Flag) 249.005 Tj
-0 -113.92 Td
-(0609 #define FL_TF 0x00000100 // Trap Flag) 249.005 Tj
-0 -123.414 Td
+(0608 #define FL_SF 0x00000080 // Sign Flag) 249.0053 Tj
+0 -113.9203 Td
+(0609 #define FL_TF 0x00000100 // Trap Flag) 249.0053 Tj
+0 -123.4137 Td
(0610 #define FL_IF 0x00000200 // Interrupt Enabl\
-e) 279.585 Tj
-0 -132.907 Td
-(0611 #define FL_DF 0x00000400 // Direction Flag) 270.848 Tj
-0 -142.4 Td
-(0612 #define FL_OF 0x00000800 // Overflow Flag) 266.479 Tj
-0 -151.894 Td
+e) 279.5849 Tj
+0 -132.9071 Td
+(0611 #define FL_DF 0x00000400 // Direction Flag) 270.8479 Tj
+0 -142.4004 Td
+(0612 #define FL_OF 0x00000800 // Overflow Flag) 266.4794 Tj
+0 -151.8938 Td
(0613 #define FL_IOPL_MASK 0x00003000 // I/O Privilege L\
-evel bitmask) 327.639 Tj
-0 -161.387 Td
-(0614 #define FL_IOPL_0 0x00000000 // IOPL == 0) 257.742 Tj
-0 -170.88 Td
-(0615 #define FL_IOPL_1 0x00001000 // IOPL == 1) 257.742 Tj
-0 -180.374 Td
-(0616 #define FL_IOPL_2 0x00002000 // IOPL == 2) 257.742 Tj
-0 -189.867 Td
-(0617 #define FL_IOPL_3 0x00003000 // IOPL == 3) 257.742 Tj
-0 -199.361 Td
-(0618 #define FL_NT 0x00004000 // Nested Task) 257.742 Tj
-0 -208.854 Td
-(0619 #define FL_RF 0x00010000 // Resume Flag) 257.742 Tj
-0 -218.347 Td
+evel bitmask) 327.6386 Tj
+0 -161.3871 Td
+(0614 #define FL_IOPL_0 0x00000000 // IOPL == 0) 257.7424 Tj
+0 -170.8805 Td
+(0615 #define FL_IOPL_1 0x00001000 // IOPL == 1) 257.7424 Tj
+0 -180.3739 Td
+(0616 #define FL_IOPL_2 0x00002000 // IOPL == 2) 257.7424 Tj
+0 -189.8672 Td
+(0617 #define FL_IOPL_3 0x00003000 // IOPL == 3) 257.7424 Tj
+0 -199.3606 Td
+(0618 #define FL_NT 0x00004000 // Nested Task) 257.7424 Tj
+0 -208.8539 Td
+(0619 #define FL_RF 0x00010000 // Resume Flag) 257.7424 Tj
+0 -218.3473 Td
(0620 #define FL_VM 0x00020000 // Virtual 8086 mo\
-de) 283.953 Tj
-0 -227.841 Td
-(0621 #define FL_AC 0x00040000 // Alignment Check) 275.216 Tj
+de) 283.9534 Tj
+0 -227.8407 Td
+(0621 #define FL_AC 0x00040000 // Alignment Check) 275.2164 Tj
0 -237.334 Td
(0622 #define FL_VIF 0x00080000 // Virtual Interru\
pt Flag) 305.796 Tj
-0 -246.827 Td
+0 -246.8274 Td
(0623 #define FL_VIP 0x00100000 // Virtual Interru\
-pt Pending) 318.902 Tj
-0 -256.321 Td
-(0624 #define FL_ID 0x00200000 // ID flag) 240.268 Tj
-0 -265.814 Td
+pt Pending) 318.9016 Tj
+0 -256.3207 Td
+(0624 #define FL_ID 0x00200000 // ID flag) 240.2683 Tj
+0 -265.8141 Td
(0625 ) 21.8426 Tj
-0 -275.307 Td
-(0626 // Segment Descriptor) 113.581 Tj
-0 -284.801 Td
+0 -275.3075 Td
+(0626 // Segment Descriptor) 113.5814 Tj
+0 -284.8008 Td
(0627 struct segdesc {) 91.7388 Tj
-0 -294.294 Td
-(0628 uint lim_15_0 : 16; // Low bits of segment limit) 244.637 Tj
-0 -303.788 Td
-(0629 uint base_15_0 : 16; // Low bits of segment base address) 275.216 Tj
-0 -313.281 Td
+0 -294.2942 Td
+(0628 uint lim_15_0 : 16; // Low bits of segment limit) 244.6368 Tj
+0 -303.7875 Td
+(0629 uint base_15_0 : 16; // Low bits of segment base address) 275.2164 Tj
+0 -313.2809 Td
(0630 uint base_23_16 : 8; // Middle bits of segment base addr\
ess) 288.322 Tj
-0 -322.774 Td
+0 -322.7743 Td
(0631 uint type : 4; // Segment type \(see STS_ constant\
-s\)) 279.585 Tj
-0 -332.268 Td
-(0632 uint s : 1; // 0 = system, 1 = application) 253.374 Tj
+s\)) 279.5849 Tj
+0 -332.2676 Td
+(0632 uint s : 1; // 0 = system, 1 = application) 253.3738 Tj
0 -341.761 Td
-(0633 uint dpl : 2; // Descriptor Privilege Level) 249.005 Tj
-0 -351.254 Td
-(0634 uint p : 1; // Present) 166.004 Tj
-0 -360.748 Td
-(0635 uint lim_19_16 : 4; // High bits of segment limit) 249.005 Tj
-0 -370.241 Td
+(0633 uint dpl : 2; // Descriptor Privilege Level) 249.0053 Tj
+0 -351.2543 Td
+(0634 uint p : 1; // Present) 166.0035 Tj
+0 -360.7477 Td
+(0635 uint lim_19_16 : 4; // High bits of segment limit) 249.0053 Tj
+0 -370.2411 Td
(0636 uint avl : 1; // Unused \(available for software \
use\)) 288.322 Tj
-0 -379.734 Td
-(0637 uint rsv1 : 1; // Reserved) 170.372 Tj
-0 -389.228 Td
+0 -379.7344 Td
+(0637 uint rsv1 : 1; // Reserved) 170.3721 Tj
+0 -389.2278 Td
(0638 uint db : 1; // 0 = 16-bit segment, 1 = 32-bit s\
-egment) 301.427 Tj
-0 -398.721 Td
+egment) 301.4275 Tj
+0 -398.7211 Td
(0639 uint g : 1; // Granularity: limit scaled by 4K \
-when set) 310.165 Tj
-0 -408.214 Td
+when set) 310.1645 Tj
+0 -408.2145 Td
(0640 uint base_31_24 : 8; // High bits of segment base addres\
-s) 279.585 Tj
-0 -417.708 Td
+s) 279.5849 Tj
+0 -417.7079 Td
(0641 };) 30.5796 Tj
-0 -427.201 Td
+0 -427.2012 Td
(0642 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(0643 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(0644 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(0645 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(0646 ) 21.8426 Tj
0 -474.668 Td
(0647 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(0648 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(0649 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 06) 34.9481 Tj
Q
Q
@@ -5341,123 +5373,123 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/mmu.h Page 2) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/mmu.h Page 2) 157.2665 Tj
0 -28.4801 Td
(0650 // Null segment) 87.3703 Tj
0 -37.9735 Td
(0651 #define SEG_NULL \(struct segdesc\){ 0,0,0,0,0,0,0,\
-0,0,0,0,0,0 }) 323.27 Tj
+0,0,0,0,0,0 }) 323.2701 Tj
0 -47.4668 Td
(0652 ) 21.8426 Tj
0 -56.9602 Td
(0653 // Normal segment) 96.1073 Tj
0 -66.4535 Td
(0654 #define SEG\(type, base, lim, dpl\) \(struct segdesc\) \
- \\) 340.744 Tj
+ \\) 340.7441 Tj
0 -75.9469 Td
(0655 { \(\(lim\) >> 12\) & 0xffff, \(base\) & 0xffff, \(\(base\)\
- >> 16\) & 0xff, \\) 340.744 Tj
+ >> 16\) & 0xff, \\) 340.7441 Tj
0 -85.4403 Td
(0656 type, 1, dpl, 1, \(uint\) \(lim\) >> 28, 0, 0, 1, 1, \
- \\) 340.744 Tj
+ \\) 340.7441 Tj
0 -94.9336 Td
-(0657 \(uint\) \(base\) >> 24 }) 131.055 Tj
+(0657 \(uint\) \(base\) >> 24 }) 131.0554 Tj
0 -104.427 Td
(0658 ) 21.8426 Tj
-0 -113.92 Td
+0 -113.9203 Td
(0659 #define SEG16\(type, base, lim, dpl\) \(struct segdesc\) \
- \\) 340.744 Tj
-0 -123.414 Td
+ \\) 340.7441 Tj
+0 -123.4137 Td
(0660 { \(lim\) & 0xffff, \(base\) & 0xffff, \(\(base\) >> 16\) \
-& 0xff, \\) 340.744 Tj
-0 -132.907 Td
+& 0xff, \\) 340.7441 Tj
+0 -132.9071 Td
(0661 type, 1, dpl, 1, \(uint\) \(lim\) >> 16, 0, 0, 1, 0, \
- \\) 340.744 Tj
-0 -142.4 Td
-(0662 \(uint\) \(base\) >> 24 }) 131.055 Tj
-0 -151.894 Td
+ \\) 340.7441 Tj
+0 -142.4004 Td
+(0662 \(uint\) \(base\) >> 24 }) 131.0554 Tj
+0 -151.8938 Td
(0663 ) 21.8426 Tj
-0 -161.387 Td
-(0664 #define DPL_USER 0x3 // User DPL) 192.215 Tj
-0 -170.88 Td
+0 -161.3871 Td
+(0664 #define DPL_USER 0x3 // User DPL) 192.2146 Tj
+0 -170.8805 Td
(0665 ) 21.8426 Tj
-0 -180.374 Td
+0 -180.3739 Td
(0666 // Application segment type bits) 161.635 Tj
-0 -189.867 Td
-(0667 #define STA_X 0x8 // Executable segment) 235.9 Tj
-0 -199.361 Td
+0 -189.8672 Td
+(0667 #define STA_X 0x8 // Executable segment) 235.8998 Tj
+0 -199.3606 Td
(0668 #define STA_E 0x4 // Expand down \(non-executabl\
-e segments\)) 318.902 Tj
-0 -208.854 Td
+e segments\)) 318.9016 Tj
+0 -208.8539 Td
(0669 #define STA_C 0x4 // Conforming code segment \(e\
-xecutable only\)) 336.376 Tj
-0 -218.347 Td
+xecutable only\)) 336.3756 Tj
+0 -218.3473 Td
(0670 #define STA_W 0x2 // Writeable \(non-executable \
-segments\)) 310.165 Tj
-0 -227.841 Td
+segments\)) 310.1645 Tj
+0 -227.8407 Td
(0671 #define STA_R 0x2 // Readable \(executable segme\
nts\)) 288.322 Tj
0 -237.334 Td
-(0672 #define STA_A 0x1 // Accessed) 192.215 Tj
-0 -246.827 Td
+(0672 #define STA_A 0x1 // Accessed) 192.2146 Tj
+0 -246.8274 Td
(0673 ) 21.8426 Tj
-0 -256.321 Td
-(0674 // System segment type bits) 139.792 Tj
-0 -265.814 Td
-(0675 #define STS_T16A 0x1 // Available 16-bit TSS) 244.637 Tj
-0 -275.307 Td
-(0676 #define STS_LDT 0x2 // Local Descriptor Table) 253.374 Tj
-0 -284.801 Td
-(0677 #define STS_T16B 0x3 // Busy 16-bit TSS) 222.794 Tj
-0 -294.294 Td
-(0678 #define STS_CG16 0x4 // 16-bit Call Gate) 227.163 Tj
-0 -303.788 Td
+0 -256.3207 Td
+(0674 // System segment type bits) 139.7925 Tj
+0 -265.8141 Td
+(0675 #define STS_T16A 0x1 // Available 16-bit TSS) 244.6368 Tj
+0 -275.3075 Td
+(0676 #define STS_LDT 0x2 // Local Descriptor Table) 253.3738 Tj
+0 -284.8008 Td
+(0677 #define STS_T16B 0x3 // Busy 16-bit TSS) 222.7942 Tj
+0 -294.2942 Td
+(0678 #define STS_CG16 0x4 // 16-bit Call Gate) 227.1628 Tj
+0 -303.7875 Td
(0679 #define STS_TG 0x5 // Task Gate / Coum Transmitio\
-ns) 283.953 Tj
-0 -313.281 Td
-(0680 #define STS_IG16 0x6 // 16-bit Interrupt Gate) 249.005 Tj
-0 -322.774 Td
-(0681 #define STS_TG16 0x7 // 16-bit Trap Gate) 227.163 Tj
-0 -332.268 Td
-(0682 #define STS_T32A 0x9 // Available 32-bit TSS) 244.637 Tj
+ns) 283.9534 Tj
+0 -313.2809 Td
+(0680 #define STS_IG16 0x6 // 16-bit Interrupt Gate) 249.0053 Tj
+0 -322.7743 Td
+(0681 #define STS_TG16 0x7 // 16-bit Trap Gate) 227.1628 Tj
+0 -332.2676 Td
+(0682 #define STS_T32A 0x9 // Available 32-bit TSS) 244.6368 Tj
0 -341.761 Td
-(0683 #define STS_T32B 0xB // Busy 32-bit TSS) 222.794 Tj
-0 -351.254 Td
-(0684 #define STS_CG32 0xC // 32-bit Call Gate) 227.163 Tj
-0 -360.748 Td
-(0685 #define STS_IG32 0xE // 32-bit Interrupt Gate) 249.005 Tj
-0 -370.241 Td
-(0686 #define STS_TG32 0xF // 32-bit Trap Gate) 227.163 Tj
-0 -379.734 Td
+(0683 #define STS_T32B 0xB // Busy 32-bit TSS) 222.7942 Tj
+0 -351.2543 Td
+(0684 #define STS_CG32 0xC // 32-bit Call Gate) 227.1628 Tj
+0 -360.7477 Td
+(0685 #define STS_IG32 0xE // 32-bit Interrupt Gate) 249.0053 Tj
+0 -370.2411 Td
+(0686 #define STS_TG32 0xF // 32-bit Trap Gate) 227.1628 Tj
+0 -379.7344 Td
(0687 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(0688 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(0689 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(0690 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(0691 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(0692 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(0693 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(0694 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(0695 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(0696 ) 21.8426 Tj
0 -474.668 Td
(0697 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(0698 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(0699 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 06) 34.9481 Tj
Q
Q
@@ -5486,8 +5518,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -5502,114 +5533,114 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/mmu.h Page 3) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/mmu.h Page 3) 157.2665 Tj
0 -28.4801 Td
(0700 // Task state segment format) 144.161 Tj
0 -37.9735 Td
-(0701 struct taskstate {) 100.476 Tj
+(0701 struct taskstate {) 100.4758 Tj
0 -47.4668 Td
-(0702 uint link; // Old ts selector) 192.215 Tj
+(0702 uint link; // Old ts selector) 192.2146 Tj
0 -56.9602 Td
(0703 uint esp0; // Stack pointers and segment selecto\
-rs) 283.953 Tj
+rs) 283.9534 Tj
0 -66.4535 Td
(0704 ushort ss0; // after an increase in privilege l\
-evel) 292.69 Tj
+evel) 292.6905 Tj
0 -75.9469 Td
-(0705 ushort padding1;) 100.476 Tj
+(0705 ushort padding1;) 100.4758 Tj
0 -85.4403 Td
(0706 uint *esp1;) 78.6333 Tj
0 -94.9336 Td
(0707 ushort ss1;) 78.6333 Tj
0 -104.427 Td
-(0708 ushort padding2;) 100.476 Tj
-0 -113.92 Td
+(0708 ushort padding2;) 100.4758 Tj
+0 -113.9203 Td
(0709 uint *esp2;) 78.6333 Tj
-0 -123.414 Td
+0 -123.4137 Td
(0710 ushort ss2;) 78.6333 Tj
-0 -132.907 Td
-(0711 ushort padding3;) 100.476 Tj
-0 -142.4 Td
-(0712 void *cr3; // Page directory base) 209.689 Tj
-0 -151.894 Td
-(0713 uint *eip; // Saved state from last task switch) 270.848 Tj
-0 -161.387 Td
+0 -132.9071 Td
+(0711 ushort padding3;) 100.4758 Tj
+0 -142.4004 Td
+(0712 void *cr3; // Page directory base) 209.6887 Tj
+0 -151.8938 Td
+(0713 uint *eip; // Saved state from last task switch) 270.8479 Tj
+0 -161.3871 Td
(0714 uint eflags;) 83.0018 Tj
-0 -170.88 Td
-(0715 uint eax; // More saved state \(registers\)) 249.005 Tj
-0 -180.374 Td
+0 -170.8805 Td
+(0715 uint eax; // More saved state \(registers\)) 249.0053 Tj
+0 -180.3739 Td
(0716 uint ecx;) 69.8962 Tj
-0 -189.867 Td
+0 -189.8672 Td
(0717 uint edx;) 69.8962 Tj
-0 -199.361 Td
+0 -199.3606 Td
(0718 uint ebx;) 69.8962 Tj
-0 -208.854 Td
+0 -208.8539 Td
(0719 uint *esp;) 74.2647 Tj
-0 -218.347 Td
+0 -218.3473 Td
(0720 uint *ebp;) 74.2647 Tj
-0 -227.841 Td
+0 -227.8407 Td
(0721 uint esi;) 69.8962 Tj
0 -237.334 Td
(0722 uint edi;) 69.8962 Tj
-0 -246.827 Td
+0 -246.8274 Td
(0723 ushort es; // Even more saved state \(segment se\
lectors\)) 305.796 Tj
-0 -256.321 Td
-(0724 ushort padding4;) 100.476 Tj
-0 -265.814 Td
+0 -256.3207 Td
+(0724 ushort padding4;) 100.4758 Tj
+0 -265.8141 Td
(0725 ushort cs;) 74.2647 Tj
-0 -275.307 Td
-(0726 ushort padding5;) 100.476 Tj
-0 -284.801 Td
+0 -275.3075 Td
+(0726 ushort padding5;) 100.4758 Tj
+0 -284.8008 Td
(0727 ushort ss;) 74.2647 Tj
-0 -294.294 Td
-(0728 ushort padding6;) 100.476 Tj
-0 -303.788 Td
+0 -294.2942 Td
+(0728 ushort padding6;) 100.4758 Tj
+0 -303.7875 Td
(0729 ushort ds;) 74.2647 Tj
-0 -313.281 Td
-(0730 ushort padding7;) 100.476 Tj
-0 -322.774 Td
+0 -313.2809 Td
+(0730 ushort padding7;) 100.4758 Tj
+0 -322.7743 Td
(0731 ushort fs;) 74.2647 Tj
-0 -332.268 Td
-(0732 ushort padding8;) 100.476 Tj
+0 -332.2676 Td
+(0732 ushort padding8;) 100.4758 Tj
0 -341.761 Td
(0733 ushort gs;) 74.2647 Tj
-0 -351.254 Td
-(0734 ushort padding9;) 100.476 Tj
-0 -360.748 Td
+0 -351.2543 Td
+(0734 ushort padding9;) 100.4758 Tj
+0 -360.7477 Td
(0735 ushort ldt;) 78.6333 Tj
-0 -370.241 Td
-(0736 ushort padding10;) 104.844 Tj
-0 -379.734 Td
-(0737 ushort t; // Trap on task switch) 209.689 Tj
-0 -389.228 Td
-(0738 ushort iomb; // I/O map base address) 214.057 Tj
-0 -398.721 Td
+0 -370.2411 Td
+(0736 ushort padding10;) 104.8443 Tj
+0 -379.7344 Td
+(0737 ushort t; // Trap on task switch) 209.6887 Tj
+0 -389.2278 Td
+(0738 ushort iomb; // I/O map base address) 214.0572 Tj
+0 -398.7211 Td
(0739 };) 30.5796 Tj
-0 -408.214 Td
+0 -408.2145 Td
(0740 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(0741 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(0742 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(0743 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(0744 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(0745 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(0746 ) 21.8426 Tj
0 -474.668 Td
(0747 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(0748 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(0749 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 07) 34.9481 Tj
Q
Q
@@ -5624,131 +5655,131 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/mmu.h Page 4) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/mmu.h Page 4) 157.2665 Tj
0 -28.4801 Td
-(0750 // Gate descriptors for interrupts and traps) 214.057 Tj
+(0750 // Gate descriptors for interrupts and traps) 214.0572 Tj
0 -37.9735 Td
(0751 struct gatedesc {) 96.1073 Tj
0 -47.4668 Td
(0752 uint off_15_0 : 16; // low 16 bits of offset in segmen\
-t) 279.585 Tj
+t) 279.5849 Tj
0 -56.9602 Td
-(0753 uint ss : 16; // segment selector) 209.689 Tj
+(0753 uint cs : 16; // code segment selector) 231.5313 Tj
0 -66.4535 Td
(0754 uint args : 5; // # args, 0 for interrupt/trap ga\
tes) 288.322 Tj
0 -75.9469 Td
(0755 uint rsv1 : 3; // reserved\(should be zero I gues\
-s\)) 279.585 Tj
+s\)) 279.5849 Tj
0 -85.4403 Td
-(0756 uint type : 4; // type\(STS_{TG,IG32,TG32}\)) 244.637 Tj
+(0756 uint type : 4; // type\(STS_{TG,IG32,TG32}\)) 244.6368 Tj
0 -94.9336 Td
-(0757 uint s : 1; // must be 0 \(system\)) 218.426 Tj
+(0757 uint s : 1; // must be 0 \(system\)) 218.4257 Tj
0 -104.427 Td
(0758 uint dpl : 2; // descriptor\(meaning new\) privi\
-lege level) 310.165 Tj
-0 -113.92 Td
-(0759 uint p : 1; // Present) 170.372 Tj
-0 -123.414 Td
-(0760 uint off_31_16 : 16; // high bits of offset in segment) 270.848 Tj
-0 -132.907 Td
+lege level) 310.1645 Tj
+0 -113.9203 Td
+(0759 uint p : 1; // Present) 170.3721 Tj
+0 -123.4137 Td
+(0760 uint off_31_16 : 16; // high bits of offset in segment) 270.8479 Tj
+0 -132.9071 Td
(0761 };) 30.5796 Tj
-0 -142.4 Td
+0 -142.4004 Td
(0762 ) 21.8426 Tj
-0 -151.894 Td
-(0763 // Set up a normal interrupt/trap gate descriptor.) 240.268 Tj
-0 -161.387 Td
+0 -151.8938 Td
+(0763 // Set up a normal interrupt/trap gate descriptor.) 240.2683 Tj
+0 -161.3871 Td
(0764 // - istrap: 1 for a trap \(= exception\) gate, 0 for an i\
-nterrupt gate.) 327.639 Tj
-0 -170.88 Td
+nterrupt gate.) 327.6386 Tj
+0 -170.8805 Td
(0765 // interrupt gate clears FL_IF, trap gate leaves FL_IF a\
-lone) 292.69 Tj
-0 -180.374 Td
-(0766 // - sel: Code segment selector for interrupt/trap handler) 275.216 Tj
-0 -189.867 Td
+lone) 292.6905 Tj
+0 -180.3739 Td
+(0766 // - sel: Code segment selector for interrupt/trap handler) 275.2164 Tj
+0 -189.8672 Td
(0767 // - off: Offset in code segment for interrupt/trap handle\
-r) 279.585 Tj
-0 -199.361 Td
-(0768 // - dpl: Descriptor Privilege Level -) 187.846 Tj
-0 -208.854 Td
+r) 279.5849 Tj
+0 -199.3606 Td
+(0768 // - dpl: Descriptor Privilege Level -) 187.8461 Tj
+0 -208.8539 Td
(0769 // the privilege level required for software to inv\
oke) 288.322 Tj
-0 -218.347 Td
+0 -218.3473 Td
(0770 // this interrupt/trap gate explicitly using an int\
- instruction.) 332.007 Tj
-0 -227.841 Td
+ instruction.) 332.0071 Tj
+0 -227.8407 Td
(0771 #define SETGATE\(gate, istrap, sel, off, d\) \
- \\) 279.585 Tj
+ \\) 279.5849 Tj
0 -237.334 Td
(0772 { \
-\\) 279.585 Tj
-0 -246.827 Td
+\\) 279.5849 Tj
+0 -246.8274 Td
(0773 \(gate\).off_15_0 = \(uint\) \(off\) & 0xffff; \
- \\) 279.585 Tj
-0 -256.321 Td
-(0774 \(gate\).ss = \(sel\); \
- \\) 279.585 Tj
-0 -265.814 Td
+ \\) 279.5849 Tj
+0 -256.3207 Td
+(0774 \(gate\).cs = \(sel\); \
+ \\) 279.5849 Tj
+0 -265.8141 Td
(0775 \(gate\).args = 0; \
- \\) 279.585 Tj
-0 -275.307 Td
+ \\) 279.5849 Tj
+0 -275.3075 Td
(0776 \(gate\).rsv1 = 0; \
- \\) 279.585 Tj
-0 -284.801 Td
+ \\) 279.5849 Tj
+0 -284.8008 Td
(0777 \(gate\).type = \(istrap\) ? STS_TG32 : STS_IG32; \
- \\) 279.585 Tj
-0 -294.294 Td
+ \\) 279.5849 Tj
+0 -294.2942 Td
(0778 \(gate\).s = 0; \
- \\) 279.585 Tj
-0 -303.788 Td
+ \\) 279.5849 Tj
+0 -303.7875 Td
(0779 \(gate\).dpl = \(d\); \
- \\) 279.585 Tj
-0 -313.281 Td
+ \\) 279.5849 Tj
+0 -313.2809 Td
(0780 \(gate\).p = 1; \
- \\) 279.585 Tj
-0 -322.774 Td
+ \\) 279.5849 Tj
+0 -322.7743 Td
(0781 \(gate\).off_31_16 = \(uint\) \(off\) >> 16; \
- \\) 279.585 Tj
-0 -332.268 Td
+ \\) 279.5849 Tj
+0 -332.2676 Td
(0782 }) 26.2111 Tj
0 -341.761 Td
(0783 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(0784 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(0785 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(0786 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(0787 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(0788 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(0789 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(0790 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(0791 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(0792 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(0793 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(0794 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(0795 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(0796 ) 21.8426 Tj
0 -474.668 Td
(0797 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(0798 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(0799 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 07) 34.9481 Tj
Q
Q
@@ -5777,8 +5808,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -5793,17 +5823,17 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/elf.h Page 1) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/elf.h Page 1) 157.2665 Tj
0 -28.4801 Td
-(0800 // Format of an ELF executable file) 174.741 Tj
+(0800 // Format of an ELF executable file) 174.7406 Tj
0 -37.9735 Td
(0801 ) 21.8426 Tj
0 -47.4668 Td
(0802 #define ELF_MAGIC 0x464C457FU // "\\x7FELF" in little end\
-ian) 283.953 Tj
+ian) 283.9534 Tj
0 -56.9602 Td
(0803 ) 21.8426 Tj
0 -66.4535 Td
@@ -5811,94 +5841,94 @@ ian) 283.953 Tj
0 -75.9469 Td
(0805 struct elfhdr {) 87.3703 Tj
0 -85.4403 Td
-(0806 uint magic; // must equal ELF_MAGIC) 187.846 Tj
+(0806 uint magic; // must equal ELF_MAGIC) 187.8461 Tj
0 -94.9336 Td
(0807 uchar elf[12];) 91.7388 Tj
0 -104.427 Td
(0808 ushort type;) 83.0018 Tj
-0 -113.92 Td
+0 -113.9203 Td
(0809 ushort machine;) 96.1073 Tj
-0 -123.414 Td
+0 -123.4137 Td
(0810 uint version;) 87.3703 Tj
-0 -132.907 Td
+0 -132.9071 Td
(0811 uint entry;) 78.6333 Tj
-0 -142.4 Td
+0 -142.4004 Td
(0812 uint phoff;) 78.6333 Tj
-0 -151.894 Td
+0 -151.8938 Td
(0813 uint shoff;) 78.6333 Tj
-0 -161.387 Td
+0 -161.3871 Td
(0814 uint flags;) 78.6333 Tj
-0 -170.88 Td
+0 -170.8805 Td
(0815 ushort ehsize;) 91.7388 Tj
-0 -180.374 Td
-(0816 ushort phentsize;) 104.844 Tj
-0 -189.867 Td
+0 -180.3739 Td
+(0816 ushort phentsize;) 104.8443 Tj
+0 -189.8672 Td
(0817 ushort phnum;) 87.3703 Tj
-0 -199.361 Td
-(0818 ushort shentsize;) 104.844 Tj
-0 -208.854 Td
+0 -199.3606 Td
+(0818 ushort shentsize;) 104.8443 Tj
+0 -208.8539 Td
(0819 ushort shnum;) 87.3703 Tj
-0 -218.347 Td
-(0820 ushort shstrndx;) 100.476 Tj
-0 -227.841 Td
+0 -218.3473 Td
+(0820 ushort shstrndx;) 100.4758 Tj
+0 -227.8407 Td
(0821 };) 30.5796 Tj
0 -237.334 Td
(0822 ) 21.8426 Tj
-0 -246.827 Td
-(0823 // Program section header) 131.055 Tj
-0 -256.321 Td
+0 -246.8274 Td
+(0823 // Program section header) 131.0554 Tj
+0 -256.3207 Td
(0824 struct proghdr {) 91.7388 Tj
-0 -265.814 Td
+0 -265.8141 Td
(0825 uint type;) 74.2647 Tj
-0 -275.307 Td
+0 -275.3075 Td
(0826 uint offset;) 83.0018 Tj
-0 -284.801 Td
+0 -284.8008 Td
(0827 uint va;) 65.5277 Tj
-0 -294.294 Td
+0 -294.2942 Td
(0828 uint pa;) 65.5277 Tj
-0 -303.788 Td
+0 -303.7875 Td
(0829 uint filesz;) 83.0018 Tj
-0 -313.281 Td
+0 -313.2809 Td
(0830 uint memsz;) 78.6333 Tj
-0 -322.774 Td
+0 -322.7743 Td
(0831 uint flags;) 78.6333 Tj
-0 -332.268 Td
+0 -332.2676 Td
(0832 uint align;) 78.6333 Tj
0 -341.761 Td
(0833 };) 30.5796 Tj
-0 -351.254 Td
+0 -351.2543 Td
(0834 ) 21.8426 Tj
-0 -360.748 Td
-(0835 // Values for Proghdr type) 135.424 Tj
-0 -370.241 Td
-(0836 #define ELF_PROG_LOAD 1) 166.004 Tj
-0 -379.734 Td
+0 -360.7477 Td
+(0835 // Values for Proghdr type) 135.4239 Tj
+0 -370.2411 Td
+(0836 #define ELF_PROG_LOAD 1) 166.0035 Tj
+0 -379.7344 Td
(0837 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(0838 // Flag bits for Proghdr flags) 152.898 Tj
-0 -398.721 Td
-(0839 #define ELF_PROG_FLAG_EXEC 1) 166.004 Tj
-0 -408.214 Td
-(0840 #define ELF_PROG_FLAG_WRITE 2) 166.004 Tj
-0 -417.708 Td
-(0841 #define ELF_PROG_FLAG_READ 4) 166.004 Tj
-0 -427.201 Td
+0 -398.7211 Td
+(0839 #define ELF_PROG_FLAG_EXEC 1) 166.0035 Tj
+0 -408.2145 Td
+(0840 #define ELF_PROG_FLAG_WRITE 2) 166.0035 Tj
+0 -417.7079 Td
+(0841 #define ELF_PROG_FLAG_READ 4) 166.0035 Tj
+0 -427.2012 Td
(0842 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(0843 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(0844 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(0845 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(0846 ) 21.8426 Tj
0 -474.668 Td
(0847 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(0848 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(0849 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 08) 34.9481 Tj
Q
Q
@@ -5913,10 +5943,10 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/elf.h Page 2) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/elf.h Page 2) 157.2665 Tj
0 -28.4801 Td
(0850 // Blank page.) 83.0018 Tj
0 -37.9735 Td
@@ -5935,89 +5965,89 @@ q
(0857 ) 21.8426 Tj
0 -104.427 Td
(0858 ) 21.8426 Tj
-0 -113.92 Td
+0 -113.9203 Td
(0859 ) 21.8426 Tj
-0 -123.414 Td
+0 -123.4137 Td
(0860 ) 21.8426 Tj
-0 -132.907 Td
+0 -132.9071 Td
(0861 ) 21.8426 Tj
-0 -142.4 Td
+0 -142.4004 Td
(0862 ) 21.8426 Tj
-0 -151.894 Td
+0 -151.8938 Td
(0863 ) 21.8426 Tj
-0 -161.387 Td
+0 -161.3871 Td
(0864 ) 21.8426 Tj
-0 -170.88 Td
+0 -170.8805 Td
(0865 ) 21.8426 Tj
-0 -180.374 Td
+0 -180.3739 Td
(0866 ) 21.8426 Tj
-0 -189.867 Td
+0 -189.8672 Td
(0867 ) 21.8426 Tj
-0 -199.361 Td
+0 -199.3606 Td
(0868 ) 21.8426 Tj
-0 -208.854 Td
+0 -208.8539 Td
(0869 ) 21.8426 Tj
-0 -218.347 Td
+0 -218.3473 Td
(0870 ) 21.8426 Tj
-0 -227.841 Td
+0 -227.8407 Td
(0871 ) 21.8426 Tj
0 -237.334 Td
(0872 ) 21.8426 Tj
-0 -246.827 Td
+0 -246.8274 Td
(0873 ) 21.8426 Tj
-0 -256.321 Td
+0 -256.3207 Td
(0874 ) 21.8426 Tj
-0 -265.814 Td
+0 -265.8141 Td
(0875 ) 21.8426 Tj
-0 -275.307 Td
+0 -275.3075 Td
(0876 ) 21.8426 Tj
-0 -284.801 Td
+0 -284.8008 Td
(0877 ) 21.8426 Tj
-0 -294.294 Td
+0 -294.2942 Td
(0878 ) 21.8426 Tj
-0 -303.788 Td
+0 -303.7875 Td
(0879 ) 21.8426 Tj
-0 -313.281 Td
+0 -313.2809 Td
(0880 ) 21.8426 Tj
-0 -322.774 Td
+0 -322.7743 Td
(0881 ) 21.8426 Tj
-0 -332.268 Td
+0 -332.2676 Td
(0882 ) 21.8426 Tj
0 -341.761 Td
(0883 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(0884 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(0885 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(0886 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(0887 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(0888 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(0889 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(0890 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(0891 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(0892 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(0893 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(0894 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(0895 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(0896 ) 21.8426 Tj
0 -474.668 Td
(0897 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(0898 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(0899 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 08) 34.9481 Tj
Q
Q
@@ -6046,8 +6076,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -6062,25 +6091,25 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/bootasm.S Page 1) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/bootasm.S Page 1) 174.7406 Tj
0 -28.4801 Td
(0900 #include "asm.h") 91.7388 Tj
0 -37.9735 Td
(0901 ) 21.8426 Tj
0 -47.4668 Td
(0902 # Start the first CPU: switch to 32-bit protected mode, ju\
-mp into C.) 318.902 Tj
+mp into C.) 318.9016 Tj
0 -56.9602 Td
(0903 # The BIOS loads this code from the first sector of the ha\
-rd disk into) 327.639 Tj
+rd disk into) 327.6386 Tj
0 -66.4535 Td
(0904 # memory at physical address 0x7c00 and starts executing i\
-n real mode) 323.27 Tj
+n real mode) 323.2701 Tj
0 -75.9469 Td
-(0905 # with %cs=0 %ip=7c00.) 117.95 Tj
+(0905 # with %cs=0 %ip=7c00.) 117.9499 Tj
0 -85.4403 Td
(0906 ) 21.8426 Tj
0 -94.9336 Td
@@ -6089,95 +6118,95 @@ ector) 297.059 Tj
0 -104.427 Td
(0908 .set PROT_MODE_DSEG, 0x10 # kernel data segment sel\
ector) 297.059 Tj
-0 -113.92 Td
+0 -113.9203 Td
(0909 .set CR0_PE_ON, 0x1 # protected mode enable f\
lag) 288.322 Tj
-0 -123.414 Td
+0 -123.4137 Td
(0910 ) 21.8426 Tj
-0 -132.907 Td
+0 -132.9071 Td
(0911 .globl start) 74.2647 Tj
-0 -142.4 Td
+0 -142.4004 Td
(0912 start:) 48.0537 Tj
-0 -151.894 Td
-(0913 .code16 # Assemble for 16-bit mode) 266.479 Tj
-0 -161.387 Td
-(0914 cli # Disable interrupts) 240.268 Tj
-0 -170.88 Td
+0 -151.8938 Td
+(0913 .code16 # Assemble for 16-bit mode) 266.4794 Tj
+0 -161.3871 Td
+(0914 cli # Disable interrupts) 240.2683 Tj
+0 -170.8805 Td
(0915 cld # String operations incremen\
-t) 279.585 Tj
-0 -180.374 Td
+t) 279.5849 Tj
+0 -180.3739 Td
(0916 ) 21.8426 Tj
-0 -189.867 Td
+0 -189.8672 Td
(0917 # Set up the important data segment registers \(DS, ES, \
SS\).) 288.322 Tj
-0 -199.361 Td
-(0918 xorw %ax,%ax # Segment number zero) 244.637 Tj
-0 -208.854 Td
-(0919 movw %ax,%ds # -> Data Segment) 227.163 Tj
-0 -218.347 Td
-(0920 movw %ax,%es # -> Extra Segment) 231.531 Tj
-0 -227.841 Td
-(0921 movw %ax,%ss # -> Stack Segment) 231.531 Tj
+0 -199.3606 Td
+(0918 xorw %ax,%ax # Segment number zero) 244.6368 Tj
+0 -208.8539 Td
+(0919 movw %ax,%ds # -> Data Segment) 227.1628 Tj
+0 -218.3473 Td
+(0920 movw %ax,%es # -> Extra Segment) 231.5313 Tj
+0 -227.8407 Td
+(0921 movw %ax,%ss # -> Stack Segment) 231.5313 Tj
0 -237.334 Td
(0922 ) 21.8426 Tj
-0 -246.827 Td
+0 -246.8274 Td
(0923 # Enable A20:) 87.3703 Tj
-0 -256.321 Td
+0 -256.3207 Td
(0924 # For backwards compatibility with the earliest PCs, p\
hysical) 305.796 Tj
-0 -265.814 Td
+0 -265.8141 Td
(0925 # address line 20 is tied low, so that addresses highe\
-r than) 301.427 Tj
-0 -275.307 Td
+r than) 301.4275 Tj
+0 -275.3075 Td
(0926 # 1MB wrap around to zero by default. This code undoe\
s this.) 305.796 Tj
-0 -284.801 Td
+0 -284.8008 Td
(0927 seta20.1:) 61.1592 Tj
-0 -294.294 Td
-(0928 inb $0x64,%al # Wait for not busy) 253.374 Tj
-0 -303.788 Td
-(0929 testb $0x2,%al) 100.476 Tj
-0 -313.281 Td
-(0930 jnz seta20.1) 100.476 Tj
-0 -322.774 Td
+0 -294.2942 Td
+(0928 inb $0x64,%al # Wait for not busy) 253.3738 Tj
+0 -303.7875 Td
+(0929 testb $0x2,%al) 100.4758 Tj
+0 -313.2809 Td
+(0930 jnz seta20.1) 100.4758 Tj
+0 -322.7743 Td
(0931 ) 21.8426 Tj
-0 -332.268 Td
-(0932 movb $0xd1,%al # 0xd1 -> port 0x64) 253.374 Tj
+0 -332.2676 Td
+(0932 movb $0xd1,%al # 0xd1 -> port 0x64) 253.3738 Tj
0 -341.761 Td
-(0933 outb %al,$0x64) 104.844 Tj
-0 -351.254 Td
+(0933 outb %al,$0x64) 104.8443 Tj
+0 -351.2543 Td
(0934 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(0935 seta20.2:) 61.1592 Tj
-0 -370.241 Td
-(0936 inb $0x64,%al # Wait for not busy) 253.374 Tj
-0 -379.734 Td
-(0937 testb $0x2,%al) 100.476 Tj
-0 -389.228 Td
-(0938 jnz seta20.2) 100.476 Tj
-0 -398.721 Td
+0 -370.2411 Td
+(0936 inb $0x64,%al # Wait for not busy) 253.3738 Tj
+0 -379.7344 Td
+(0937 testb $0x2,%al) 100.4758 Tj
+0 -389.2278 Td
+(0938 jnz seta20.2) 100.4758 Tj
+0 -398.7211 Td
(0939 ) 21.8426 Tj
-0 -408.214 Td
-(0940 movb $0xdf,%al # 0xdf -> port 0x60) 253.374 Tj
-0 -417.708 Td
-(0941 outb %al,$0x60) 104.844 Tj
-0 -427.201 Td
+0 -408.2145 Td
+(0940 movb $0xdf,%al # 0xdf -> port 0x60) 253.3738 Tj
+0 -417.7079 Td
+(0941 outb %al,$0x60) 104.8443 Tj
+0 -427.2012 Td
(0942 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(0943 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(0944 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(0945 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(0946 ) 21.8426 Tj
0 -474.668 Td
(0947 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(0948 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(0949 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 09) 34.9481 Tj
Q
Q
@@ -6192,116 +6221,116 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/bootasm.S Page 2) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/bootasm.S Page 2) 174.7406 Tj
0 -28.4801 Td
(0950 # Switch from real to protected mode, using a bootstrap \
GDT) 288.322 Tj
0 -37.9735 Td
-(0951 # and segment translation that makes virtual addresses) 266.479 Tj
+(0951 # and segment translation that makes virtual addresses) 266.4794 Tj
0 -47.4668 Td
-(0952 # identical to their physical addresses, so that the) 257.742 Tj
+(0952 # identical to physical addresses, so that the) 231.5313 Tj
0 -56.9602 Td
(0953 # effective memory map does not change during the switch\
-.) 279.585 Tj
+.) 279.5849 Tj
0 -66.4535 Td
(0954 lgdt gdtdesc) 96.1073 Tj
0 -75.9469 Td
-(0955 movl %cr0, %eax) 109.213 Tj
+(0955 movl %cr0, %eax) 109.2129 Tj
0 -85.4403 Td
-(0956 orl $CR0_PE_ON, %eax) 135.424 Tj
+(0956 orl $CR0_PE_ON, %eax) 135.4239 Tj
0 -94.9336 Td
-(0957 movl %eax, %cr0) 109.213 Tj
+(0957 movl %eax, %cr0) 109.2129 Tj
0 -104.427 Td
(0958 ) 21.8426 Tj
-0 -113.92 Td
-(0959 # Jump to next instruction, but in 32-bit code segment.) 270.848 Tj
-0 -123.414 Td
-(0960 # Switches processor into 32-bit mode.) 196.583 Tj
-0 -132.907 Td
-(0961 ljmp $PROT_MODE_CSEG, $protcseg) 179.109 Tj
-0 -142.4 Td
+0 -113.9203 Td
+(0959 # Jump to next instruction, but in 32-bit code segment.) 270.8479 Tj
+0 -123.4137 Td
+(0960 # Switches processor into 32-bit mode.) 196.5831 Tj
+0 -132.9071 Td
+(0961 ljmp $PROT_MODE_CSEG, $protcseg) 179.1091 Tj
+0 -142.4004 Td
(0962 ) 21.8426 Tj
-0 -151.894 Td
-(0963 .code32 # Assemble for 32-bit mode) 266.479 Tj
-0 -161.387 Td
+0 -151.8938 Td
+(0963 .code32 # Assemble for 32-bit mode) 266.4794 Tj
+0 -161.3871 Td
(0964 protcseg:) 61.1592 Tj
-0 -170.88 Td
-(0965 # Set up the protected-mode data segment registers) 249.005 Tj
-0 -180.374 Td
+0 -170.8805 Td
+(0965 # Set up the protected-mode data segment registers) 249.0053 Tj
+0 -180.3739 Td
(0966 movw $PROT_MODE_DSEG, %ax # Our data segment selec\
tor) 288.322 Tj
-0 -189.867 Td
-(0967 movw %ax, %ds # -> DS: Data Segment) 262.111 Tj
-0 -199.361 Td
-(0968 movw %ax, %es # -> ES: Extra Segment) 266.479 Tj
-0 -208.854 Td
-(0969 movw %ax, %fs # -> FS) 200.952 Tj
-0 -218.347 Td
-(0970 movw %ax, %gs # -> GS) 200.952 Tj
-0 -227.841 Td
-(0971 movw %ax, %ss # -> SS: Stack Segment) 266.479 Tj
+0 -189.8672 Td
+(0967 movw %ax, %ds # -> DS: Data Segment) 262.1109 Tj
+0 -199.3606 Td
+(0968 movw %ax, %es # -> ES: Extra Segment) 266.4794 Tj
+0 -208.8539 Td
+(0969 movw %ax, %fs # -> FS) 200.9517 Tj
+0 -218.3473 Td
+(0970 movw %ax, %gs # -> GS) 200.9517 Tj
+0 -227.8407 Td
+(0971 movw %ax, %ss # -> SS: Stack Segment) 266.4794 Tj
0 -237.334 Td
(0972 ) 21.8426 Tj
-0 -246.827 Td
-(0973 # Set up the stack pointer and call into C.) 218.426 Tj
-0 -256.321 Td
-(0974 movl $start, %esp) 117.95 Tj
-0 -265.814 Td
-(0975 call bootmain) 100.476 Tj
-0 -275.307 Td
+0 -246.8274 Td
+(0973 # Set up the stack pointer and call into C.) 218.4257 Tj
+0 -256.3207 Td
+(0974 movl $start, %esp) 117.9499 Tj
+0 -265.8141 Td
+(0975 call bootmain) 100.4758 Tj
+0 -275.3075 Td
(0976 ) 21.8426 Tj
-0 -284.801 Td
-(0977 # If bootmain returns \(it shouldn't\), loop.) 218.426 Tj
-0 -294.294 Td
+0 -284.8008 Td
+(0977 # If bootmain returns \(it shouldn't\), loop.) 218.4257 Tj
+0 -294.2942 Td
(0978 spin:) 43.6851 Tj
-0 -303.788 Td
+0 -303.7875 Td
(0979 jmp spin) 83.0018 Tj
-0 -313.281 Td
+0 -313.2809 Td
(0980 ) 21.8426 Tj
-0 -322.774 Td
+0 -322.7743 Td
(0981 # Bootstrap GDT) 87.3703 Tj
-0 -332.268 Td
+0 -332.2676 Td
(0982 .p2align 2 # force 4 byte a\
-lignment) 310.165 Tj
+lignment) 310.1645 Tj
0 -341.761 Td
(0983 gdt:) 39.3166 Tj
-0 -351.254 Td
-(0984 SEG_NULLASM # null seg) 249.005 Tj
-0 -360.748 Td
-(0985 SEG_ASM\(STA_X|STA_R, 0x0, 0xffffffff\) # code seg) 249.005 Tj
-0 -370.241 Td
-(0986 SEG_ASM\(STA_W, 0x0, 0xffffffff\) # data seg) 249.005 Tj
-0 -379.734 Td
+0 -351.2543 Td
+(0984 SEG_NULLASM # null seg) 249.0053 Tj
+0 -360.7477 Td
+(0985 SEG_ASM\(STA_X|STA_R, 0x0, 0xffffffff\) # code seg) 249.0053 Tj
+0 -370.2411 Td
+(0986 SEG_ASM\(STA_W, 0x0, 0xffffffff\) # data seg) 249.0053 Tj
+0 -379.7344 Td
(0987 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(0988 gdtdesc:) 56.7907 Tj
-0 -398.721 Td
+0 -398.7211 Td
(0989 .word 0x17 # sizeof\(gdt\) \
-- 1) 279.585 Tj
-0 -408.214 Td
-(0990 .long gdt # address gdt) 262.111 Tj
-0 -417.708 Td
+- 1) 279.5849 Tj
+0 -408.2145 Td
+(0990 .long gdt # address gdt) 262.1109 Tj
+0 -417.7079 Td
(0991 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(0992 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(0993 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(0994 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(0995 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(0996 ) 21.8426 Tj
0 -474.668 Td
(0997 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(0998 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(0999 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 09) 34.9481 Tj
Q
Q
@@ -6330,8 +6359,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -6346,121 +6374,123 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/bootother.S Page 1) 183.478 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/bootother.S Page 1) 183.4776 Tj
0 -28.4801 Td
(1000 #include "asm.h") 91.7388 Tj
0 -37.9735 Td
(1001 ) 21.8426 Tj
0 -47.4668 Td
-(1002 # Start an Application Processor. This must be placed on a\
- 4KB boundary) 332.007 Tj
+(1002 # Each non-boot CPU \("AP"\) is started up in response to \
+a STARTUP) 305.796 Tj
0 -56.9602 Td
-(1003 # somewhere in the 1st MB of conventional memory \(APBOOTS\
-TRAP\). However,) 336.376 Tj
+(1003 # IPI from the boot CPU. Section B.4.2 of the Multi-Proce\
+ssor) 292.6905 Tj
0 -66.4535 Td
-(1004 # due to some shortcuts below it's restricted further to w\
-ithin the 1st) 332.007 Tj
+(1004 # Specification says that the AP will start in real mode w\
+ith CS:IP) 314.533 Tj
0 -75.9469 Td
-(1005 # 64KB. The AP starts in real-mode, with) 196.583 Tj
+(1005 # set to XY00:0000, where XY is an 8-bit value sent with t\
+he) 283.9534 Tj
0 -85.4403 Td
-(1006 # CS selector set to the startup memory address/16;) 253.374 Tj
+(1006 # STARTUP. Thus this code must start at a 4096-byte bounda\
+ry.) 288.322 Tj
0 -94.9336 Td
-(1007 # CS base set to startup memory address;) 205.32 Tj
+(1007 #) 26.2111 Tj
0 -104.427 Td
-(1008 # CS limit set to 64KB;) 131.055 Tj
-0 -113.92 Td
-(1009 # CPL and IP set to 0.) 126.687 Tj
-0 -123.414 Td
+(1008 # Because this code sets DS to zero, it must sit) 231.5313 Tj
+0 -113.9203 Td
+(1009 # at an address in the low 2^16 bytes.) 187.8461 Tj
+0 -123.4137 Td
(1010 #) 26.2111 Tj
-0 -132.907 Td
-(1011 # Bootothers \(in main.c\) starts each non-boot CPU in tur\
-n.) 275.216 Tj
-0 -142.4 Td
-(1012 # It puts the correct %esp in start-4,) 187.846 Tj
-0 -151.894 Td
-(1013 # and the place to jump to in start-8.) 187.846 Tj
-0 -161.387 Td
-(1014 #) 26.2111 Tj
-0 -170.88 Td
-(1015 # This code is identical to bootasm.S except:) 218.426 Tj
-0 -180.374 Td
-(1016 # - it does not need to enable A20) 179.109 Tj
-0 -189.867 Td
-(1017 # - it uses the address at start-4 for the %esp) 235.9 Tj
-0 -199.361 Td
-(1018 # - it jumps to the address at start-8 instead of callin\
-g bootmain) 318.902 Tj
-0 -208.854 Td
-(1019 ) 21.8426 Tj
-0 -218.347 Td
-(1020 .set PROT_MODE_CSEG, 0x8 # kernel code segment sel\
-ector) 297.059 Tj
-0 -227.841 Td
-(1021 .set PROT_MODE_DSEG, 0x10 # kernel data segment sel\
+0 -132.9071 Td
+(1011 # Bootothers \(in main.c\) sends the STARTUPs, one at a ti\
+me.) 279.5849 Tj
+0 -142.4004 Td
+(1012 # It puts this code \(start\) at 0x7000.) 187.8461 Tj
+0 -151.8938 Td
+(1013 # It puts the correct %esp in start-4,) 187.8461 Tj
+0 -161.3871 Td
+(1014 # and the place to jump to in start-8.) 187.8461 Tj
+0 -170.8805 Td
+(1015 #) 26.2111 Tj
+0 -180.3739 Td
+(1016 # This code is identical to bootasm.S except:) 218.4257 Tj
+0 -189.8672 Td
+(1017 # - it does not need to enable A20) 179.1091 Tj
+0 -199.3606 Td
+(1018 # - it uses the address at start-4 for the %esp) 235.8998 Tj
+0 -208.8539 Td
+(1019 # - it jumps to the address at start-8 instead of callin\
+g bootmain) 318.9016 Tj
+0 -218.3473 Td
+(1020 ) 21.8426 Tj
+0 -227.8407 Td
+(1021 .set PROT_MODE_CSEG, 0x8 # kernel code segment sel\
ector) 297.059 Tj
0 -237.334 Td
-(1022 .set CR0_PE_ON, 0x1 # protected mode enable f\
+(1022 .set PROT_MODE_DSEG, 0x10 # kernel data segment sel\
+ector) 297.059 Tj
+0 -246.8274 Td
+(1023 .set CR0_PE_ON, 0x1 # protected mode enable f\
lag) 288.322 Tj
-0 -246.827 Td
-(1023 ) 21.8426 Tj
-0 -256.321 Td
-(1024 .globl start) 74.2647 Tj
-0 -265.814 Td
-(1025 start:) 48.0537 Tj
-0 -275.307 Td
-(1026 .code16 # Assemble for 16-bit mode) 266.479 Tj
-0 -284.801 Td
-(1027 cli # Disable interrupts) 240.268 Tj
-0 -294.294 Td
-(1028 cld # String operations incremen\
-t) 279.585 Tj
-0 -303.788 Td
-(1029 ) 21.8426 Tj
-0 -313.281 Td
-(1030 # Set up the important data segment registers \(DS, ES, \
+0 -256.3207 Td
+(1024 ) 21.8426 Tj
+0 -265.8141 Td
+(1025 .globl start) 74.2647 Tj
+0 -275.3075 Td
+(1026 start:) 48.0537 Tj
+0 -284.8008 Td
+(1027 .code16 # Assemble for 16-bit mode) 266.4794 Tj
+0 -294.2942 Td
+(1028 cli # Disable interrupts) 240.2683 Tj
+0 -303.7875 Td
+(1029 cld # String operations incremen\
+t) 279.5849 Tj
+0 -313.2809 Td
+(1030 ) 21.8426 Tj
+0 -322.7743 Td
+(1031 # Set up the important data segment registers \(DS, ES, \
SS\).) 288.322 Tj
-0 -322.774 Td
-(1031 xorw %ax,%ax # Segment number zero) 244.637 Tj
-0 -332.268 Td
-(1032 movw %ax,%ds # -> Data Segment) 227.163 Tj
+0 -332.2676 Td
+(1032 xorw %ax,%ax # Segment number zero) 244.6368 Tj
0 -341.761 Td
-(1033 movw %ax,%es # -> Extra Segment) 231.531 Tj
-0 -351.254 Td
-(1034 movw %ax,%ss # -> Stack Segment) 231.531 Tj
-0 -360.748 Td
-(1035 ) 21.8426 Tj
-0 -370.241 Td
+(1033 movw %ax,%ds # -> Data Segment) 227.1628 Tj
+0 -351.2543 Td
+(1034 movw %ax,%es # -> Extra Segment) 231.5313 Tj
+0 -360.7477 Td
+(1035 movw %ax,%ss # -> Stack Segment) 231.5313 Tj
+0 -370.2411 Td
(1036 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(1037 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(1038 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(1039 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(1040 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(1041 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(1042 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(1043 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(1044 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(1045 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(1046 ) 21.8426 Tj
0 -474.668 Td
(1047 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(1048 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(1049 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 10) 34.9481 Tj
Q
Q
@@ -6475,116 +6505,116 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/bootother.S Page 2) 183.478 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/bootother.S Page 2) 183.4776 Tj
0 -28.4801 Td
(1050 # Switch from real to protected mode, using a bootstrap \
GDT) 288.322 Tj
0 -37.9735 Td
-(1051 # and segment translation that makes virtual addresses) 266.479 Tj
+(1051 # and segment translation that makes virtual addresses) 266.4794 Tj
0 -47.4668 Td
-(1052 # identical to their physical addresses, so that the) 257.742 Tj
+(1052 # identical to their physical addresses, so that the) 257.7424 Tj
0 -56.9602 Td
(1053 # effective memory map does not change during the switch\
-.) 279.585 Tj
+.) 279.5849 Tj
0 -66.4535 Td
(1054 lgdt gdtdesc) 96.1073 Tj
0 -75.9469 Td
-(1055 movl %cr0, %eax) 109.213 Tj
+(1055 movl %cr0, %eax) 109.2129 Tj
0 -85.4403 Td
-(1056 orl $CR0_PE_ON, %eax) 135.424 Tj
+(1056 orl $CR0_PE_ON, %eax) 135.4239 Tj
0 -94.9336 Td
-(1057 movl %eax, %cr0) 109.213 Tj
+(1057 movl %eax, %cr0) 109.2129 Tj
0 -104.427 Td
(1058 ) 21.8426 Tj
-0 -113.92 Td
-(1059 # Jump to next instruction, but in 32-bit code segment.) 270.848 Tj
-0 -123.414 Td
-(1060 # Switches processor into 32-bit mode.) 196.583 Tj
-0 -132.907 Td
-(1061 ljmp $PROT_MODE_CSEG, $protcseg) 179.109 Tj
-0 -142.4 Td
+0 -113.9203 Td
+(1059 # Jump to next instruction, but in 32-bit code segment.) 270.8479 Tj
+0 -123.4137 Td
+(1060 # Switches processor into 32-bit mode.) 196.5831 Tj
+0 -132.9071 Td
+(1061 ljmp $PROT_MODE_CSEG, $protcseg) 179.1091 Tj
+0 -142.4004 Td
(1062 ) 21.8426 Tj
-0 -151.894 Td
-(1063 .code32 # Assemble for 32-bit mode) 266.479 Tj
-0 -161.387 Td
+0 -151.8938 Td
+(1063 .code32 # Assemble for 32-bit mode) 266.4794 Tj
+0 -161.3871 Td
(1064 protcseg:) 61.1592 Tj
-0 -170.88 Td
-(1065 # Set up the protected-mode data segment registers) 249.005 Tj
-0 -180.374 Td
+0 -170.8805 Td
+(1065 # Set up the protected-mode data segment registers) 249.0053 Tj
+0 -180.3739 Td
(1066 movw $PROT_MODE_DSEG, %ax # Our data segment selec\
tor) 288.322 Tj
-0 -189.867 Td
-(1067 movw %ax, %ds # -> DS: Data Segment) 262.111 Tj
-0 -199.361 Td
-(1068 movw %ax, %es # -> ES: Extra Segment) 266.479 Tj
-0 -208.854 Td
-(1069 movw %ax, %fs # -> FS) 200.952 Tj
-0 -218.347 Td
-(1070 movw %ax, %gs # -> GS) 200.952 Tj
-0 -227.841 Td
-(1071 movw %ax, %ss # -> SS: Stack Segment) 266.479 Tj
+0 -189.8672 Td
+(1067 movw %ax, %ds # -> DS: Data Segment) 262.1109 Tj
+0 -199.3606 Td
+(1068 movw %ax, %es # -> ES: Extra Segment) 266.4794 Tj
+0 -208.8539 Td
+(1069 movw %ax, %fs # -> FS) 200.9517 Tj
+0 -218.3473 Td
+(1070 movw %ax, %gs # -> GS) 200.9517 Tj
+0 -227.8407 Td
+(1071 movw %ax, %ss # -> SS: Stack Segment) 266.4794 Tj
0 -237.334 Td
(1072 ) 21.8426 Tj
-0 -246.827 Td
-(1073 movl start-4, %esp) 122.318 Tj
-0 -256.321 Td
-(1074 movl start-8, %eax) 122.318 Tj
-0 -265.814 Td
+0 -246.8274 Td
+(1073 movl start-4, %esp) 122.3184 Tj
+0 -256.3207 Td
+(1074 movl start-8, %eax) 122.3184 Tj
+0 -265.8141 Td
(1075 jmp *%eax) 87.3703 Tj
-0 -275.307 Td
+0 -275.3075 Td
(1076 ) 21.8426 Tj
-0 -284.801 Td
+0 -284.8008 Td
(1077 # Bootstrap GDT) 87.3703 Tj
-0 -294.294 Td
+0 -294.2942 Td
(1078 .p2align 2 # force 4 byte a\
-lignment) 310.165 Tj
-0 -303.788 Td
+lignment) 310.1645 Tj
+0 -303.7875 Td
(1079 gdt:) 39.3166 Tj
-0 -313.281 Td
-(1080 SEG_NULLASM # null seg) 249.005 Tj
-0 -322.774 Td
-(1081 SEG_ASM\(STA_X|STA_R, 0x0, 0xffffffff\) # code seg) 249.005 Tj
-0 -332.268 Td
-(1082 SEG_ASM\(STA_W, 0x0, 0xffffffff\) # data seg) 249.005 Tj
+0 -313.2809 Td
+(1080 SEG_NULLASM # null seg) 249.0053 Tj
+0 -322.7743 Td
+(1081 SEG_ASM\(STA_X|STA_R, 0x0, 0xffffffff\) # code seg) 249.0053 Tj
+0 -332.2676 Td
+(1082 SEG_ASM\(STA_W, 0x0, 0xffffffff\) # data seg) 249.0053 Tj
0 -341.761 Td
(1083 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(1084 gdtdesc:) 56.7907 Tj
-0 -360.748 Td
+0 -360.7477 Td
(1085 .word 0x17 # sizeof\(gdt\) \
-- 1) 279.585 Tj
-0 -370.241 Td
-(1086 .long gdt # address gdt) 262.111 Tj
-0 -379.734 Td
+- 1) 279.5849 Tj
+0 -370.2411 Td
+(1086 .long gdt # address gdt) 262.1109 Tj
+0 -379.7344 Td
(1087 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(1088 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(1089 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(1090 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(1091 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(1092 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(1093 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(1094 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(1095 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(1096 ) 21.8426 Tj
0 -474.668 Td
(1097 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(1098 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(1099 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 10) 34.9481 Tj
Q
Q
@@ -6613,8 +6643,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -6629,115 +6658,114 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/bootmain.c Page 1) 179.109 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/bootmain.c Page 1) 179.1091 Tj
0 -28.4801 Td
(1100 // Boot loader.) 87.3703 Tj
0 -37.9735 Td
(1101 //) 30.5796 Tj
0 -47.4668 Td
-(1102 // The BIOS loads boot sector \(bootasm.S\) from sector 0 \
-of the disk) 314.533 Tj
+(1102 // Part of the boot sector, along with bootasm.S, which ca\
+lls bootmain\(\).) 340.7441 Tj
0 -56.9602 Td
-(1103 // into memory and executes it. The boot sector puts the \
-processor) 314.533 Tj
+(1103 // bootasm.S has put the processor into protected 32-bit m\
+ode.) 292.6905 Tj
0 -66.4535 Td
-(1104 // in 32-bit mode and calls bootmain below, which loads an\
- ELF kernel) 323.27 Tj
+(1104 // bootmain\(\) loads an ELF kernel image from the disk st\
+arting at) 305.796 Tj
0 -75.9469 Td
-(1105 // image from the disk starting at sector 1 and then jumps\
- to the) 305.796 Tj
+(1105 // sector 1 and then jumps to the kernel entry routine.) 262.1109 Tj
0 -85.4403 Td
-(1106 // kernel entry routine.) 126.687 Tj
+(1106 ) 21.8426 Tj
0 -94.9336 Td
-(1107 ) 21.8426 Tj
+(1107 #include "types.h") 100.4758 Tj
0 -104.427 Td
-(1108 #include "types.h") 100.476 Tj
-0 -113.92 Td
-(1109 #include "elf.h") 91.7388 Tj
-0 -123.414 Td
-(1110 #include "x86.h") 91.7388 Tj
-0 -132.907 Td
-(1111 ) 21.8426 Tj
-0 -142.4 Td
-(1112 #define SECTSIZE 512) 113.581 Tj
-0 -151.894 Td
-(1113 ) 21.8426 Tj
-0 -161.387 Td
-(1114 void readseg\(uint, uint, uint\);) 157.267 Tj
-0 -170.88 Td
-(1115 ) 21.8426 Tj
-0 -180.374 Td
-(1116 void) 39.3166 Tj
-0 -189.867 Td
-(1117 bootmain\(void\)) 83.0018 Tj
-0 -199.361 Td
-(1118 {) 26.2111 Tj
-0 -208.854 Td
-(1119 struct elfhdr *elf;) 113.581 Tj
-0 -218.347 Td
-(1120 struct proghdr *ph, *eph;) 139.792 Tj
-0 -227.841 Td
-(1121 void \(*entry\)\(void\);) 117.95 Tj
+(1108 #include "elf.h") 91.7388 Tj
+0 -113.9203 Td
+(1109 #include "x86.h") 91.7388 Tj
+0 -123.4137 Td
+(1110 ) 21.8426 Tj
+0 -132.9071 Td
+(1111 #define SECTSIZE 512) 113.5814 Tj
+0 -142.4004 Td
+(1112 ) 21.8426 Tj
+0 -151.8938 Td
+(1113 void readseg\(uint, uint, uint\);) 157.2665 Tj
+0 -161.3871 Td
+(1114 ) 21.8426 Tj
+0 -170.8805 Td
+(1115 void) 39.3166 Tj
+0 -180.3739 Td
+(1116 bootmain\(void\)) 83.0018 Tj
+0 -189.8672 Td
+(1117 {) 26.2111 Tj
+0 -199.3606 Td
+(1118 struct elfhdr *elf;) 113.5814 Tj
+0 -208.8539 Td
+(1119 struct proghdr *ph, *eph;) 139.7925 Tj
+0 -218.3473 Td
+(1120 void \(*entry\)\(void\);) 117.9499 Tj
+0 -227.8407 Td
+(1121 ) 21.8426 Tj
0 -237.334 Td
-(1122 ) 21.8426 Tj
-0 -246.827 Td
-(1123 elf = \(struct elfhdr*\)0x10000; // scratch space) 240.268 Tj
-0 -256.321 Td
-(1124 ) 21.8426 Tj
-0 -265.814 Td
-(1125 // Read 1st page off disk) 139.792 Tj
-0 -275.307 Td
-(1126 readseg\(\(uint\)elf, SECTSIZE*8, 0\);) 179.109 Tj
-0 -284.801 Td
-(1127 ) 21.8426 Tj
-0 -294.294 Td
-(1128 // Is this an ELF executable?) 157.267 Tj
-0 -303.788 Td
-(1129 if\(elf->magic != ELF_MAGIC\)) 148.529 Tj
-0 -313.281 Td
-(1130 goto bad;) 78.6333 Tj
-0 -322.774 Td
-(1131 ) 21.8426 Tj
-0 -332.268 Td
-(1132 // Load each program segment \(ignores ph flags\).) 240.268 Tj
+(1122 elf = \(struct elfhdr*\)0x10000; // scratch space) 240.2683 Tj
+0 -246.8274 Td
+(1123 ) 21.8426 Tj
+0 -256.3207 Td
+(1124 // Read 1st page off disk) 139.7925 Tj
+0 -265.8141 Td
+(1125 readseg\(\(uint\)elf, SECTSIZE*8, 0\);) 179.1091 Tj
+0 -275.3075 Td
+(1126 ) 21.8426 Tj
+0 -284.8008 Td
+(1127 // Is this an ELF executable?) 157.2665 Tj
+0 -294.2942 Td
+(1128 if\(elf->magic != ELF_MAGIC\)) 148.5295 Tj
+0 -303.7875 Td
+(1129 goto bad;) 78.6333 Tj
+0 -313.2809 Td
+(1130 ) 21.8426 Tj
+0 -322.7743 Td
+(1131 // Load each program segment \(ignores ph flags\).) 240.2683 Tj
+0 -332.2676 Td
+(1132 ph = \(struct proghdr*\)\(\(uchar*\)elf + elf->phoff\);) 244.6368 Tj
0 -341.761 Td
-(1133 ph = \(struct proghdr*\)\(\(uchar*\)elf + elf->phoff\);) 244.637 Tj
-0 -351.254 Td
-(1134 eph = ph + elf->phnum;) 126.687 Tj
-0 -360.748 Td
-(1135 for\(; ph < eph; ph++\)) 122.318 Tj
-0 -370.241 Td
-(1136 readseg\(ph->va, ph->memsz, ph->offset\);) 209.689 Tj
-0 -379.734 Td
-(1137 ) 21.8426 Tj
-0 -389.228 Td
-(1138 // Call the entry point from the ELF header.) 222.794 Tj
-0 -398.721 Td
-(1139 // Does not return!) 113.581 Tj
-0 -408.214 Td
-(1140 entry = \(void\(*\)\(void\)\)\(elf->entry & 0xFFFFFF\);) 235.9 Tj
-0 -417.708 Td
-(1141 entry\(\);) 65.5277 Tj
-0 -427.201 Td
-(1142 ) 21.8426 Tj
-0 -436.695 Td
-(1143 bad:) 39.3166 Tj
-0 -446.188 Td
-(1144 outw\(0x8A00, 0x8A00\);) 122.318 Tj
-0 -455.681 Td
-(1145 outw\(0x8A00, 0x8E00\);) 122.318 Tj
-0 -465.175 Td
-(1146 for\(;;\)) 61.1592 Tj
+(1133 eph = ph + elf->phnum;) 126.6869 Tj
+0 -351.2543 Td
+(1134 for\(; ph < eph; ph++\)) 122.3184 Tj
+0 -360.7477 Td
+(1135 readseg\(ph->va & 0xFFFFFF, ph->memsz, ph->offset\);) 257.7424 Tj
+0 -370.2411 Td
+(1136 ) 21.8426 Tj
+0 -379.7344 Td
+(1137 // Call the entry point from the ELF header.) 222.7942 Tj
+0 -389.2278 Td
+(1138 // Does not return!) 113.5814 Tj
+0 -398.7211 Td
+(1139 entry = \(void\(*\)\(void\)\)\(elf->entry & 0xFFFFFF\);) 235.8998 Tj
+0 -408.2145 Td
+(1140 entry\(\);) 65.5277 Tj
+0 -417.7079 Td
+(1141 ) 21.8426 Tj
+0 -427.2012 Td
+(1142 bad:) 39.3166 Tj
+0 -436.6946 Td
+(1143 outw\(0x8A00, 0x8A00\);) 122.3184 Tj
+0 -446.1879 Td
+(1144 outw\(0x8A00, 0x8E00\);) 122.3184 Tj
+0 -455.6813 Td
+(1145 for\(;;\)) 61.1592 Tj
+0 -465.1747 Td
+(1146 ;) 43.6851 Tj
0 -474.668 Td
-(1147 ;) 43.6851 Tj
-0 -484.161 Td
-(1148 }) 26.2111 Tj
-0 -493.655 Td
+(1147 }) 26.2111 Tj
+0 -484.1614 Td
+(1148 ) 21.8426 Tj
+0 -493.6547 Td
(1149 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 11) 34.9481 Tj
Q
Q
@@ -6752,10 +6780,10 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/bootmain.c Page 2) 179.109 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/bootmain.c Page 2) 179.1091 Tj
0 -28.4801 Td
(1150 void) 39.3166 Tj
0 -37.9735 Td
@@ -6763,9 +6791,9 @@ q
0 -47.4668 Td
(1152 {) 26.2111 Tj
0 -56.9602 Td
-(1153 // Wait for disk ready.) 131.055 Tj
+(1153 // Wait for disk ready.) 131.0554 Tj
0 -66.4535 Td
-(1154 while\(\(inb\(0x1F7\) & 0xC0\) != 0x40\)) 179.109 Tj
+(1154 while\(\(inb\(0x1F7\) & 0xC0\) != 0x40\)) 179.1091 Tj
0 -75.9469 Td
(1155 ;) 43.6851 Tj
0 -85.4403 Td
@@ -6773,94 +6801,94 @@ q
0 -94.9336 Td
(1157 ) 21.8426 Tj
0 -104.427 Td
-(1158 // Read a single sector at offset into dst.) 209.689 Tj
-0 -113.92 Td
+(1158 // Read a single sector at offset into dst.) 209.6887 Tj
+0 -113.9203 Td
(1159 void) 39.3166 Tj
-0 -123.414 Td
+0 -123.4137 Td
(1160 readsect\(void *dst, uint offset\)) 161.635 Tj
-0 -132.907 Td
+0 -132.9071 Td
(1161 {) 26.2111 Tj
-0 -142.4 Td
-(1162 // Issue command.) 104.844 Tj
-0 -151.894 Td
+0 -142.4004 Td
+(1162 // Issue command.) 104.8443 Tj
+0 -151.8938 Td
(1163 waitdisk\(\);) 78.6333 Tj
-0 -161.387 Td
+0 -161.3871 Td
(1164 outb\(0x1F2, 1\); // count = 1) 161.635 Tj
-0 -170.88 Td
-(1165 outb\(0x1F3, offset\);) 117.95 Tj
-0 -180.374 Td
-(1166 outb\(0x1F4, offset >> 8\);) 139.792 Tj
-0 -189.867 Td
+0 -170.8805 Td
+(1165 outb\(0x1F3, offset\);) 117.9499 Tj
+0 -180.3739 Td
+(1166 outb\(0x1F4, offset >> 8\);) 139.7925 Tj
+0 -189.8672 Td
(1167 outb\(0x1F5, offset >> 16\);) 144.161 Tj
-0 -199.361 Td
-(1168 outb\(0x1F6, \(offset >> 24\) | 0xE0\);) 183.478 Tj
-0 -208.854 Td
-(1169 outb\(0x1F7, 0x20\); // cmd 0x20 - read sectors) 231.531 Tj
-0 -218.347 Td
+0 -199.3606 Td
+(1168 outb\(0x1F6, \(offset >> 24\) | 0xE0\);) 183.4776 Tj
+0 -208.8539 Td
+(1169 outb\(0x1F7, 0x20\); // cmd 0x20 - read sectors) 231.5313 Tj
+0 -218.3473 Td
(1170 ) 21.8426 Tj
-0 -227.841 Td
+0 -227.8407 Td
(1171 // Read data.) 87.3703 Tj
0 -237.334 Td
(1172 waitdisk\(\);) 78.6333 Tj
-0 -246.827 Td
-(1173 insl\(0x1F0, dst, SECTSIZE/4\);) 157.267 Tj
-0 -256.321 Td
+0 -246.8274 Td
+(1173 insl\(0x1F0, dst, SECTSIZE/4\);) 157.2665 Tj
+0 -256.3207 Td
(1174 }) 26.2111 Tj
-0 -265.814 Td
+0 -265.8141 Td
(1175 ) 21.8426 Tj
-0 -275.307 Td
+0 -275.3075 Td
(1176 // Read 'count' bytes at 'offset' from kernel into virtual\
- address 'va'.) 336.376 Tj
-0 -284.801 Td
+ address 'va'.) 336.3756 Tj
+0 -284.8008 Td
(1177 // Might copy more than asked.) 152.898 Tj
-0 -294.294 Td
+0 -294.2942 Td
(1178 void) 39.3166 Tj
-0 -303.788 Td
-(1179 readseg\(uint va, uint count, uint offset\)) 200.952 Tj
-0 -313.281 Td
+0 -303.7875 Td
+(1179 readseg\(uint va, uint count, uint offset\)) 200.9517 Tj
+0 -313.2809 Td
(1180 {) 26.2111 Tj
-0 -322.774 Td
+0 -322.7743 Td
(1181 uint eva;) 69.8962 Tj
-0 -332.268 Td
+0 -332.2676 Td
(1182 ) 21.8426 Tj
0 -341.761 Td
-(1183 va &= 0xFFFFFF;) 96.1073 Tj
-0 -351.254 Td
-(1184 eva = va + count;) 104.844 Tj
-0 -360.748 Td
-(1185 ) 21.8426 Tj
-0 -370.241 Td
-(1186 // Round down to sector boundary.) 174.741 Tj
-0 -379.734 Td
-(1187 va &= ~\(SECTSIZE - 1\);) 126.687 Tj
-0 -389.228 Td
-(1188 ) 21.8426 Tj
-0 -398.721 Td
-(1189 // Translate from bytes to sectors; kernel starts at sec\
-tor 1.) 301.427 Tj
-0 -408.214 Td
-(1190 offset = \(offset / SECTSIZE\) + 1;) 174.741 Tj
-0 -417.708 Td
-(1191 ) 21.8426 Tj
-0 -427.201 Td
-(1192 // If this is too slow, we could read lots of sectors at\
- a time.) 310.165 Tj
-0 -436.695 Td
-(1193 // We'd write more to memory than asked, but it doesn't \
+(1183 eva = va + count;) 104.8443 Tj
+0 -351.2543 Td
+(1184 ) 21.8426 Tj
+0 -360.7477 Td
+(1185 // Round down to sector boundary.) 174.7406 Tj
+0 -370.2411 Td
+(1186 va &= ~\(SECTSIZE - 1\);) 126.6869 Tj
+0 -379.7344 Td
+(1187 ) 21.8426 Tj
+0 -389.2278 Td
+(1188 // Translate from bytes to sectors; kernel starts at sec\
+tor 1.) 301.4275 Tj
+0 -398.7211 Td
+(1189 offset = \(offset / SECTSIZE\) + 1;) 174.7406 Tj
+0 -408.2145 Td
+(1190 ) 21.8426 Tj
+0 -417.7079 Td
+(1191 // If this is too slow, we could read lots of sectors at\
+ a time.) 310.1645 Tj
+0 -427.2012 Td
+(1192 // We'd write more to memory than asked, but it doesn't \
matter --) 314.533 Tj
-0 -446.188 Td
-(1194 // we load in increasing order.) 166.004 Tj
-0 -455.681 Td
-(1195 for\(; va < eva; va += SECTSIZE, offset++\)) 209.689 Tj
-0 -465.175 Td
-(1196 readsect\(\(uchar*\)va, offset\);) 166.004 Tj
+0 -436.6946 Td
+(1193 // we load in increasing order.) 166.0035 Tj
+0 -446.1879 Td
+(1194 for\(; va < eva; va += SECTSIZE, offset++\)) 209.6887 Tj
+0 -455.6813 Td
+(1195 readsect\(\(uchar*\)va, offset\);) 166.0035 Tj
+0 -465.1747 Td
+(1196 }) 26.2111 Tj
0 -474.668 Td
-(1197 }) 26.2111 Tj
-0 -484.161 Td
+(1197 ) 21.8426 Tj
+0 -484.1614 Td
(1198 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(1199 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 11) 34.9481 Tj
Q
Q
@@ -6889,8 +6917,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -6905,16 +6932,16 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/main.c Page 1) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/main.c Page 1) 161.635 Tj
0 -28.4801 Td
-(1200 #include "types.h") 100.476 Tj
+(1200 #include "types.h") 100.4758 Tj
0 -37.9735 Td
(1201 #include "defs.h") 96.1073 Tj
0 -47.4668 Td
-(1202 #include "param.h") 100.476 Tj
+(1202 #include "param.h") 100.4758 Tj
0 -56.9602 Td
(1203 #include "mmu.h") 91.7388 Tj
0 -66.4535 Td
@@ -6924,94 +6951,92 @@ q
0 -85.4403 Td
(1206 ) 21.8426 Tj
0 -94.9336 Td
-(1207 static void bootothers\(void\);) 148.529 Tj
+(1207 static void bootothers\(void\);) 148.5295 Tj
0 -104.427 Td
-(1208 ) 21.8426 Tj
-0 -113.92 Td
-(1209 // Bootstrap processor starts running C code here.) 240.268 Tj
-0 -123.414 Td
-(1210 int) 34.9481 Tj
-0 -132.907 Td
-(1211 main\(void\)) 65.5277 Tj
-0 -142.4 Td
-(1212 {) 26.2111 Tj
-0 -151.894 Td
-(1213 int i;) 56.7907 Tj
-0 -161.387 Td
-(1214 static volatile int bcpu; // cannot be on stack) 240.268 Tj
-0 -170.88 Td
-(1215 extern char edata[], end[];) 148.529 Tj
-0 -180.374 Td
-(1216 ) 21.8426 Tj
-0 -189.867 Td
-(1217 // clear BSS) 83.0018 Tj
-0 -199.361 Td
-(1218 memset\(edata, 0, end - edata\);) 161.635 Tj
-0 -208.854 Td
-(1219 ) 21.8426 Tj
-0 -218.347 Td
-(1220 // Prevent release\(\) from enabling interrupts.) 231.531 Tj
-0 -227.841 Td
-(1221 for\(i=0; i<NCPU; i++\)) 122.318 Tj
+(1208 static void mpmain\(void\) __attribute__\(\(noreturn\)\);) 244.6368 Tj
+0 -113.9203 Td
+(1209 ) 21.8426 Tj
+0 -123.4137 Td
+(1210 // Bootstrap processor starts running C code here.) 240.2683 Tj
+0 -132.9071 Td
+(1211 int) 34.9481 Tj
+0 -142.4004 Td
+(1212 main\(void\)) 65.5277 Tj
+0 -151.8938 Td
+(1213 {) 26.2111 Tj
+0 -161.3871 Td
+(1214 extern char edata[], end[];) 148.5295 Tj
+0 -170.8805 Td
+(1215 ) 21.8426 Tj
+0 -180.3739 Td
+(1216 // clear BSS) 83.0018 Tj
+0 -189.8672 Td
+(1217 memset\(edata, 0, end - edata\);) 161.635 Tj
+0 -199.3606 Td
+(1218 ) 21.8426 Tj
+0 -208.8539 Td
+(1219 mp_init\(\); // collect info about this machine) 227.1628 Tj
+0 -218.3473 Td
+(1220 lapic_init\(mp_bcpu\(\)\);) 126.6869 Tj
+0 -227.8407 Td
+(1221 cprintf\("\\ncpu%d: starting xv6\\n\\n", cpu\(\)\);) 222.7942 Tj
0 -237.334 Td
-(1222 cpus[i].nlock = 1;) 117.95 Tj
-0 -246.827 Td
-(1223 ) 21.8426 Tj
-0 -256.321 Td
-(1224 mp_init\(\); // collect info about this machine) 227.163 Tj
-0 -265.814 Td
-(1225 bcpu = mp_bcpu\(\);) 104.844 Tj
-0 -275.307 Td
-(1226 ) 21.8426 Tj
-0 -284.801 Td
-(1227 // Switch to bootstrap processor's stack) 205.32 Tj
-0 -294.294 Td
-(1228 asm volatile\("movl %0, %%esp" : : "r" \(cpus[bcpu].mpst\
-ack+MPSTACK-32\)\);) 340.744 Tj
-0 -303.788 Td
-(1229 asm volatile\("movl %0, %%ebp" : : "r" \(cpus[bcpu].mpst\
-ack+MPSTACK\)\);) 327.639 Tj
-0 -313.281 Td
-(1230 ) 21.8426 Tj
-0 -322.774 Td
-(1231 lapic_init\(bcpu\);) 104.844 Tj
-0 -332.268 Td
-(1232 cprintf\("\\ncpu%d: starting xv6\\n\\n", cpu\(\)\);) 222.794 Tj
+(1222 ) 21.8426 Tj
+0 -246.8274 Td
+(1223 pinit\(\); // process table) 174.7406 Tj
+0 -256.3207 Td
+(1224 binit\(\); // buffer cache) 170.3721 Tj
+0 -265.8141 Td
+(1225 pic_init\(\); // interrupt controller) 205.3202 Tj
+0 -275.3075 Td
+(1226 ioapic_init\(\); // another interrupt controller) 240.2683 Tj
+0 -284.8008 Td
+(1227 kinit\(\); // physical memory allocator) 227.1628 Tj
+0 -294.2942 Td
+(1228 tvinit\(\); // trap vectors) 170.3721 Tj
+0 -303.7875 Td
+(1229 fileinit\(\); // file table) 161.635 Tj
+0 -313.2809 Td
+(1230 iinit\(\); // inode cache) 166.0035 Tj
+0 -322.7743 Td
+(1231 console_init\(\); // I/O devices & their interrupts) 249.0053 Tj
+0 -332.2676 Td
+(1232 ide_init\(\); // disk) 135.4239 Tj
0 -341.761 Td
-(1233 ) 21.8426 Tj
-0 -351.254 Td
-(1234 pinit\(\); // process table) 174.741 Tj
-0 -360.748 Td
-(1235 binit\(\); // buffer cache) 170.372 Tj
-0 -370.241 Td
-(1236 pic_init\(\); // interrupt controller) 205.32 Tj
-0 -379.734 Td
-(1237 ioapic_init\(\); // another interrupt controller) 240.268 Tj
-0 -389.228 Td
-(1238 kinit\(\); // physical memory allocator) 227.163 Tj
-0 -398.721 Td
-(1239 tvinit\(\); // trap vectors) 170.372 Tj
-0 -408.214 Td
-(1240 idtinit\(\); // interrupt descriptor table) 231.531 Tj
-0 -417.708 Td
-(1241 fileinit\(\); // file table) 161.635 Tj
-0 -427.201 Td
-(1242 iinit\(\); // inode cache) 166.004 Tj
-0 -436.695 Td
-(1243 setupsegs\(0\); // segments & TSS) 179.109 Tj
-0 -446.188 Td
-(1244 console_init\(\); // I/O devices & their interrupts) 249.005 Tj
-0 -455.681 Td
-(1245 ide_init\(\); // disk) 135.424 Tj
-0 -465.175 Td
-(1246 bootothers\(\); // boot other CPUs) 183.478 Tj
+(1233 if\(!ismp\)) 69.8962 Tj
+0 -351.2543 Td
+(1234 timer_init\(\); // uniprocessor timer) 196.5831 Tj
+0 -360.7477 Td
+(1235 userinit\(\); // first user process) 196.5831 Tj
+0 -370.2411 Td
+(1236 bootothers\(\); // start other processors) 214.0572 Tj
+0 -379.7344 Td
+(1237 ) 21.8426 Tj
+0 -389.2278 Td
+(1238 // Finish setting up this processor in mpmain.) 231.5313 Tj
+0 -398.7211 Td
+(1239 mpmain\(\);) 69.8962 Tj
+0 -408.2145 Td
+(1240 }) 26.2111 Tj
+0 -417.7079 Td
+(1241 ) 21.8426 Tj
+0 -427.2012 Td
+(1242 ) 21.8426 Tj
+0 -436.6946 Td
+(1243 ) 21.8426 Tj
+0 -446.1879 Td
+(1244 ) 21.8426 Tj
+0 -455.6813 Td
+(1245 ) 21.8426 Tj
+0 -465.1747 Td
+(1246 ) 21.8426 Tj
0 -474.668 Td
-(1247 if\(!ismp\)) 69.8962 Tj
-0 -484.161 Td
-(1248 timer_init\(\); // uniprocessor timer) 192.215 Tj
-0 -493.655 Td
-(1249 userinit\(\); // first user process) 196.583 Tj
-0 -522.135 Td
+(1247 ) 21.8426 Tj
+0 -484.1614 Td
+(1248 ) 21.8426 Tj
+0 -493.6547 Td
+(1249 ) 21.8426 Tj
+0 -522.1348 Td
(Sheet 12) 34.9481 Tj
Q
Q
@@ -7026,113 +7051,114 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/main.c Page 2) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/main.c Page 2) 161.635 Tj
0 -28.4801 Td
-(1250 // enable interrupts on this processor.) 200.952 Tj
+(1250 // Bootstrap processor gets here after setting up the hard\
+ware.) 297.059 Tj
0 -37.9735 Td
-(1251 cpus[cpu\(\)].nlock--;) 117.95 Tj
+(1251 // Additional processors start here.) 179.1091 Tj
0 -47.4668 Td
-(1252 sti\(\);) 56.7907 Tj
+(1252 static void) 69.8962 Tj
0 -56.9602 Td
-(1253 ) 21.8426 Tj
+(1253 mpmain\(void\)) 74.2647 Tj
0 -66.4535 Td
-(1254 scheduler\(\);) 83.0018 Tj
+(1254 {) 26.2111 Tj
0 -75.9469 Td
-(1255 }) 26.2111 Tj
+(1255 cprintf\("cpu%d: mpmain\\n", cpu\(\)\);) 179.1091 Tj
0 -85.4403 Td
-(1256 ) 21.8426 Tj
+(1256 idtinit\(\);) 74.2647 Tj
0 -94.9336 Td
-(1257 // Additional processors start here.) 179.109 Tj
+(1257 if\(cpu\(\) != mp_bcpu\(\)\)) 126.6869 Tj
0 -104.427 Td
-(1258 static void) 69.8962 Tj
-0 -113.92 Td
-(1259 mpmain\(void\)) 74.2647 Tj
-0 -123.414 Td
-(1260 {) 26.2111 Tj
-0 -132.907 Td
-(1261 cprintf\("cpu%d: starting\\n", cpu\(\)\);) 187.846 Tj
-0 -142.4 Td
-(1262 idtinit\(\);) 74.2647 Tj
-0 -151.894 Td
-(1263 lapic_init\(cpu\(\)\);) 109.213 Tj
-0 -161.387 Td
-(1264 setupsegs\(0\);) 87.3703 Tj
-0 -170.88 Td
-(1265 cpuid\(0, 0, 0, 0, 0\); // memory barrier) 205.32 Tj
-0 -180.374 Td
-(1266 cpus[cpu\(\)].booted = 1;) 131.055 Tj
-0 -189.867 Td
-(1267 ) 21.8426 Tj
-0 -199.361 Td
-(1268 // Enable interrupts on this processor.) 200.952 Tj
-0 -208.854 Td
-(1269 cpus[cpu\(\)].nlock--;) 117.95 Tj
-0 -218.347 Td
-(1270 sti\(\);) 56.7907 Tj
-0 -227.841 Td
-(1271 ) 21.8426 Tj
-0 -237.334 Td
-(1272 scheduler\(\);) 83.0018 Tj
-0 -246.827 Td
-(1273 }) 26.2111 Tj
-0 -256.321 Td
-(1274 ) 21.8426 Tj
-0 -265.814 Td
-(1275 static void) 69.8962 Tj
-0 -275.307 Td
-(1276 bootothers\(void\)) 91.7388 Tj
-0 -284.801 Td
-(1277 {) 26.2111 Tj
-0 -294.294 Td
-(1278 extern uchar _binary_bootother_start[], _binary_bootothe\
+(1258 lapic_init\(cpu\(\)\);) 117.9499 Tj
+0 -113.9203 Td
+(1259 setupsegs\(0\);) 87.3703 Tj
+0 -123.4137 Td
+(1260 xchg\(&cpus[cpu\(\)].booted, 1\);) 157.2665 Tj
+0 -132.9071 Td
+(1261 ) 21.8426 Tj
+0 -142.4004 Td
+(1262 cprintf\("cpu%d: scheduling\\n", cpu\(\)\);) 196.5831 Tj
+0 -151.8938 Td
+(1263 scheduler\(\);) 83.0018 Tj
+0 -161.3871 Td
+(1264 }) 26.2111 Tj
+0 -170.8805 Td
+(1265 ) 21.8426 Tj
+0 -180.3739 Td
+(1266 static void) 69.8962 Tj
+0 -189.8672 Td
+(1267 bootothers\(void\)) 91.7388 Tj
+0 -199.3606 Td
+(1268 {) 26.2111 Tj
+0 -208.8539 Td
+(1269 extern uchar _binary_bootother_start[], _binary_bootothe\
r_size[];) 314.533 Tj
-0 -303.788 Td
-(1279 uchar *code;) 83.0018 Tj
-0 -313.281 Td
-(1280 struct cpu *c;) 91.7388 Tj
-0 -322.774 Td
+0 -218.3473 Td
+(1270 uchar *code;) 83.0018 Tj
+0 -227.8407 Td
+(1271 struct cpu *c;) 91.7388 Tj
+0 -237.334 Td
+(1272 char *stack;) 83.0018 Tj
+0 -246.8274 Td
+(1273 ) 21.8426 Tj
+0 -256.3207 Td
+(1274 // Write bootstrap code to unused memory at 0x7000.) 253.3738 Tj
+0 -265.8141 Td
+(1275 code = \(uchar*\)0x7000;) 126.6869 Tj
+0 -275.3075 Td
+(1276 memmove\(code, _binary_bootother_start, \(uint\)_binary_\
+bootother_size\);) 332.0071 Tj
+0 -284.8008 Td
+(1277 ) 21.8426 Tj
+0 -294.2942 Td
+(1278 for\(c = cpus; c < cpus+ncpu; c++\){) 179.1091 Tj
+0 -303.7875 Td
+(1279 if\(c == cpus+cpu\(\)\) // We've started already.) 240.2683 Tj
+0 -313.2809 Td
+(1280 continue;) 87.3703 Tj
+0 -322.7743 Td
(1281 ) 21.8426 Tj
-0 -332.268 Td
-(1282 // Write bootstrap code to unused memory at 0x7000.) 253.374 Tj
+0 -332.2676 Td
+(1282 // Fill in %esp, %eip and start code on cpu.) 231.5313 Tj
0 -341.761 Td
-(1283 code = \(uchar*\)0x7000;) 126.687 Tj
-0 -351.254 Td
-(1284 memmove\(code, _binary_bootother_start, \(uint\)_binary_\
-bootother_size\);) 332.007 Tj
-0 -360.748 Td
-(1285 ) 21.8426 Tj
-0 -370.241 Td
-(1286 for\(c = cpus; c < cpus+ncpu; c++\){) 179.109 Tj
-0 -379.734 Td
-(1287 if\(c == cpus+cpu\(\)\) // We've started already.) 240.268 Tj
-0 -389.228 Td
-(1288 continue;) 87.3703 Tj
-0 -398.721 Td
-(1289 ) 21.8426 Tj
-0 -408.214 Td
-(1290 // Fill in %esp, %eip and start code on cpu.) 231.531 Tj
-0 -417.708 Td
-(1291 *\(void**\)\(code-4\) = c->mpstack + MPSTACK;) 218.426 Tj
-0 -427.201 Td
-(1292 *\(void**\)\(code-8\) = mpmain;) 157.267 Tj
-0 -436.695 Td
-(1293 lapic_startap\(c->apicid, \(uint\)code\);) 200.952 Tj
-0 -446.188 Td
+(1283 stack = kalloc\(KSTACKSIZE\);) 157.2665 Tj
+0 -351.2543 Td
+(1284 *\(void**\)\(code-4\) = stack + KSTACKSIZE;) 209.6887 Tj
+0 -360.7477 Td
+(1285 *\(void**\)\(code-8\) = mpmain;) 157.2665 Tj
+0 -370.2411 Td
+(1286 lapic_startap\(c->apicid, \(uint\)code\);) 200.9517 Tj
+0 -379.7344 Td
+(1287 ) 21.8426 Tj
+0 -389.2278 Td
+(1288 // Wait for cpu to get through bootstrap.) 218.4257 Tj
+0 -398.7211 Td
+(1289 while\(c->booted == 0\)) 131.0554 Tj
+0 -408.2145 Td
+(1290 ;) 52.4222 Tj
+0 -417.7079 Td
+(1291 }) 34.9481 Tj
+0 -427.2012 Td
+(1292 }) 26.2111 Tj
+0 -436.6946 Td
+(1293 ) 21.8426 Tj
+0 -446.1879 Td
(1294 ) 21.8426 Tj
-0 -455.681 Td
-(1295 // Wait for cpu to get through bootstrap.) 218.426 Tj
-0 -465.175 Td
-(1296 while\(c->booted == 0\)) 131.055 Tj
+0 -455.6813 Td
+(1295 ) 21.8426 Tj
+0 -465.1747 Td
+(1296 ) 21.8426 Tj
0 -474.668 Td
-(1297 ;) 52.4222 Tj
-0 -484.161 Td
-(1298 }) 34.9481 Tj
-0 -493.655 Td
-(1299 }) 26.2111 Tj
-0 -522.135 Td
+(1297 ) 21.8426 Tj
+0 -484.1614 Td
+(1298 ) 21.8426 Tj
+0 -493.6547 Td
+(1299 ) 21.8426 Tj
+0 -522.1348 Td
(Sheet 12) 34.9481 Tj
Q
Q
@@ -7161,8 +7187,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -7177,113 +7202,113 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/spinlock.h Page 1) 179.109 Tj
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+(Sep 3 10:04 2008 xv6/spinlock.h Page 1) 179.1091 Tj
0 -28.4801 Td
-(1300 // Mutual exclusion lock.) 131.055 Tj
+(1300 // Mutual exclusion lock.) 131.0554 Tj
0 -37.9735 Td
(1301 struct spinlock {) 96.1073 Tj
0 -47.4668 Td
-(1302 uint locked; // Is the lock held?) 183.478 Tj
+(1302 uint locked; // Is the lock held?) 183.4776 Tj
0 -56.9602 Td
(1303 ) 21.8426 Tj
0 -66.4535 Td
-(1304 // For debugging:) 104.844 Tj
+(1304 // For debugging:) 104.8443 Tj
0 -75.9469 Td
-(1305 char *name; // Name of lock.) 166.004 Tj
+(1305 char *name; // Name of lock.) 166.0035 Tj
0 -85.4403 Td
(1306 int cpu; // The number of the cpu holding the lock\
-.) 279.585 Tj
+.) 279.5849 Tj
0 -94.9336 Td
(1307 uint pcs[10]; // The call stack \(an array of program c\
ounters\)) 305.796 Tj
0 -104.427 Td
-(1308 // that locked the lock.) 200.952 Tj
-0 -113.92 Td
+(1308 // that locked the lock.) 200.9517 Tj
+0 -113.9203 Td
(1309 };) 30.5796 Tj
-0 -123.414 Td
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(1310 ) 21.8426 Tj
-0 -132.907 Td
+0 -132.9071 Td
(1311 ) 21.8426 Tj
-0 -142.4 Td
+0 -142.4004 Td
(1312 ) 21.8426 Tj
-0 -151.894 Td
+0 -151.8938 Td
(1313 ) 21.8426 Tj
-0 -161.387 Td
+0 -161.3871 Td
(1314 ) 21.8426 Tj
-0 -170.88 Td
+0 -170.8805 Td
(1315 ) 21.8426 Tj
-0 -180.374 Td
+0 -180.3739 Td
(1316 ) 21.8426 Tj
-0 -189.867 Td
+0 -189.8672 Td
(1317 ) 21.8426 Tj
-0 -199.361 Td
+0 -199.3606 Td
(1318 ) 21.8426 Tj
-0 -208.854 Td
+0 -208.8539 Td
(1319 ) 21.8426 Tj
-0 -218.347 Td
+0 -218.3473 Td
(1320 ) 21.8426 Tj
-0 -227.841 Td
+0 -227.8407 Td
(1321 ) 21.8426 Tj
0 -237.334 Td
(1322 ) 21.8426 Tj
-0 -246.827 Td
+0 -246.8274 Td
(1323 ) 21.8426 Tj
-0 -256.321 Td
+0 -256.3207 Td
(1324 ) 21.8426 Tj
-0 -265.814 Td
+0 -265.8141 Td
(1325 ) 21.8426 Tj
-0 -275.307 Td
+0 -275.3075 Td
(1326 ) 21.8426 Tj
-0 -284.801 Td
+0 -284.8008 Td
(1327 ) 21.8426 Tj
-0 -294.294 Td
+0 -294.2942 Td
(1328 ) 21.8426 Tj
-0 -303.788 Td
+0 -303.7875 Td
(1329 ) 21.8426 Tj
-0 -313.281 Td
+0 -313.2809 Td
(1330 ) 21.8426 Tj
-0 -322.774 Td
+0 -322.7743 Td
(1331 ) 21.8426 Tj
-0 -332.268 Td
+0 -332.2676 Td
(1332 ) 21.8426 Tj
0 -341.761 Td
(1333 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(1334 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(1335 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(1336 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(1337 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(1338 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(1339 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(1340 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(1341 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(1342 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(1343 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(1344 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(1345 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(1346 ) 21.8426 Tj
0 -474.668 Td
(1347 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(1348 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(1349 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 13) 34.9481 Tj
Q
Q
@@ -7298,111 +7323,112 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/spinlock.h Page 2) 179.109 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/spinlock.c Page 1) 179.1091 Tj
0 -28.4801 Td
-(1350 // Blank page.) 83.0018 Tj
+(1350 // Mutual exclusion spin locks.) 157.2665 Tj
0 -37.9735 Td
(1351 ) 21.8426 Tj
0 -47.4668 Td
-(1352 ) 21.8426 Tj
+(1352 #include "types.h") 100.4758 Tj
0 -56.9602 Td
-(1353 ) 21.8426 Tj
+(1353 #include "defs.h") 96.1073 Tj
0 -66.4535 Td
-(1354 ) 21.8426 Tj
+(1354 #include "param.h") 100.4758 Tj
0 -75.9469 Td
-(1355 ) 21.8426 Tj
+(1355 #include "x86.h") 91.7388 Tj
0 -85.4403 Td
-(1356 ) 21.8426 Tj
+(1356 #include "mmu.h") 91.7388 Tj
0 -94.9336 Td
-(1357 ) 21.8426 Tj
+(1357 #include "proc.h") 96.1073 Tj
0 -104.427 Td
-(1358 ) 21.8426 Tj
-0 -113.92 Td
+(1358 #include "spinlock.h") 113.5814 Tj
+0 -113.9203 Td
(1359 ) 21.8426 Tj
-0 -123.414 Td
-(1360 ) 21.8426 Tj
-0 -132.907 Td
+0 -123.4137 Td
+(1360 extern int use_console_lock;) 144.161 Tj
+0 -132.9071 Td
(1361 ) 21.8426 Tj
-0 -142.4 Td
-(1362 ) 21.8426 Tj
-0 -151.894 Td
-(1363 ) 21.8426 Tj
-0 -161.387 Td
-(1364 ) 21.8426 Tj
-0 -170.88 Td
-(1365 ) 21.8426 Tj
-0 -180.374 Td
-(1366 ) 21.8426 Tj
-0 -189.867 Td
-(1367 ) 21.8426 Tj
-0 -199.361 Td
-(1368 ) 21.8426 Tj
-0 -208.854 Td
+0 -142.4004 Td
+(1362 void) 39.3166 Tj
+0 -151.8938 Td
+(1363 initlock\(struct spinlock *lock, char *name\)) 209.6887 Tj
+0 -161.3871 Td
+(1364 {) 26.2111 Tj
+0 -170.8805 Td
+(1365 lock->name = name;) 109.2129 Tj
+0 -180.3739 Td
+(1366 lock->locked = 0;) 104.8443 Tj
+0 -189.8672 Td
+(1367 lock->cpu = 0xffffffff;) 131.0554 Tj
+0 -199.3606 Td
+(1368 }) 26.2111 Tj
+0 -208.8539 Td
(1369 ) 21.8426 Tj
-0 -218.347 Td
-(1370 ) 21.8426 Tj
-0 -227.841 Td
-(1371 ) 21.8426 Tj
+0 -218.3473 Td
+(1370 // Acquire the lock.) 109.2129 Tj
+0 -227.8407 Td
+(1371 // Loops \(spins\) until the lock is acquired.) 214.0572 Tj
0 -237.334 Td
-(1372 ) 21.8426 Tj
-0 -246.827 Td
-(1373 ) 21.8426 Tj
-0 -256.321 Td
-(1374 ) 21.8426 Tj
-0 -265.814 Td
-(1375 ) 21.8426 Tj
-0 -275.307 Td
-(1376 ) 21.8426 Tj
-0 -284.801 Td
-(1377 ) 21.8426 Tj
-0 -294.294 Td
-(1378 ) 21.8426 Tj
-0 -303.788 Td
-(1379 ) 21.8426 Tj
-0 -313.281 Td
+(1372 // Holding a lock for a long time may cause) 209.6887 Tj
+0 -246.8274 Td
+(1373 // other CPUs to waste time spinning to acquire it.) 244.6368 Tj
+0 -256.3207 Td
+(1374 void) 39.3166 Tj
+0 -265.8141 Td
+(1375 acquire\(struct spinlock *lock\)) 152.898 Tj
+0 -275.3075 Td
+(1376 {) 26.2111 Tj
+0 -284.8008 Td
+(1377 pushcli\(\);) 74.2647 Tj
+0 -294.2942 Td
+(1378 if\(holding\(lock\)\)) 104.8443 Tj
+0 -303.7875 Td
+(1379 panic\("acquire"\);) 113.5814 Tj
+0 -313.2809 Td
(1380 ) 21.8426 Tj
-0 -322.774 Td
-(1381 ) 21.8426 Tj
-0 -332.268 Td
-(1382 ) 21.8426 Tj
+0 -322.7743 Td
+(1381 // The xchg is atomic.) 126.6869 Tj
+0 -332.2676 Td
+(1382 // It also serializes, so that reads after acquire are n\
+ot) 283.9534 Tj
0 -341.761 Td
-(1383 ) 21.8426 Tj
-0 -351.254 Td
-(1384 ) 21.8426 Tj
-0 -360.748 Td
-(1385 ) 21.8426 Tj
-0 -370.241 Td
+(1383 // reordered before it.) 131.0554 Tj
+0 -351.2543 Td
+(1384 while\(xchg\(&lock->locked, 1\) == 1\)) 179.1091 Tj
+0 -360.7477 Td
+(1385 ;) 43.6851 Tj
+0 -370.2411 Td
(1386 ) 21.8426 Tj
-0 -379.734 Td
-(1387 ) 21.8426 Tj
-0 -389.228 Td
-(1388 ) 21.8426 Tj
-0 -398.721 Td
-(1389 ) 21.8426 Tj
-0 -408.214 Td
-(1390 ) 21.8426 Tj
-0 -417.708 Td
-(1391 ) 21.8426 Tj
-0 -427.201 Td
-(1392 ) 21.8426 Tj
-0 -436.695 Td
-(1393 ) 21.8426 Tj
-0 -446.188 Td
+0 -379.7344 Td
+(1387 // Record info about lock acquisition for debugging.) 257.7424 Tj
+0 -389.2278 Td
+(1388 // The +10 is only so that we can tell the difference) 262.1109 Tj
+0 -398.7211 Td
+(1389 // between forgetting to initialize lock->cpu) 227.1628 Tj
+0 -408.2145 Td
+(1390 // and holding a lock on cpu 0.) 166.0035 Tj
+0 -417.7079 Td
+(1391 lock->cpu = cpu\(\) + 10;) 131.0554 Tj
+0 -427.2012 Td
+(1392 getcallerpcs\(&lock, lock->pcs\);) 166.0035 Tj
+0 -436.6946 Td
+(1393 }) 26.2111 Tj
+0 -446.1879 Td
(1394 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(1395 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(1396 ) 21.8426 Tj
0 -474.668 Td
(1397 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(1398 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(1399 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 13) 34.9481 Tj
Q
Q
@@ -7431,8 +7457,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -7447,113 +7472,114 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/spinlock.c Page 1) 179.109 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/spinlock.c Page 2) 179.1091 Tj
0 -28.4801 Td
-(1400 // Mutual exclusion spin locks.) 157.267 Tj
+(1400 // Release the lock.) 109.2129 Tj
0 -37.9735 Td
-(1401 ) 21.8426 Tj
+(1401 void) 39.3166 Tj
0 -47.4668 Td
-(1402 #include "types.h") 100.476 Tj
+(1402 release\(struct spinlock *lock\)) 152.898 Tj
0 -56.9602 Td
-(1403 #include "defs.h") 96.1073 Tj
+(1403 {) 26.2111 Tj
0 -66.4535 Td
-(1404 #include "param.h") 100.476 Tj
+(1404 if\(!holding\(lock\)\)) 109.2129 Tj
0 -75.9469 Td
-(1405 #include "x86.h") 91.7388 Tj
+(1405 panic\("release"\);) 113.5814 Tj
0 -85.4403 Td
-(1406 #include "mmu.h") 91.7388 Tj
+(1406 ) 21.8426 Tj
0 -94.9336 Td
-(1407 #include "proc.h") 96.1073 Tj
+(1407 lock->pcs[0] = 0;) 104.8443 Tj
0 -104.427 Td
-(1408 #include "spinlock.h") 113.581 Tj
-0 -113.92 Td
+(1408 lock->cpu = 0xffffffff;) 131.0554 Tj
+0 -113.9203 Td
(1409 ) 21.8426 Tj
-0 -123.414 Td
-(1410 extern int use_console_lock;) 144.161 Tj
-0 -132.907 Td
-(1411 ) 21.8426 Tj
-0 -142.4 Td
-(1412 void) 39.3166 Tj
-0 -151.894 Td
-(1413 initlock\(struct spinlock *lock, char *name\)) 209.689 Tj
-0 -161.387 Td
-(1414 {) 26.2111 Tj
-0 -170.88 Td
-(1415 lock->name = name;) 109.213 Tj
-0 -180.374 Td
-(1416 lock->locked = 0;) 104.844 Tj
-0 -189.867 Td
-(1417 lock->cpu = 0xffffffff;) 131.055 Tj
-0 -199.361 Td
+0 -123.4137 Td
+(1410 // The xchg serializes, so that reads before release are) 275.2164 Tj
+0 -132.9071 Td
+(1411 // not reordered after it. \(This reordering would be a\
+llowed) 297.059 Tj
+0 -142.4004 Td
+(1412 // by the Intel manuals, but does not happen on current) 270.8479 Tj
+0 -151.8938 Td
+(1413 // Intel processors. The xchg being asm volatile also k\
+eeps) 292.6905 Tj
+0 -161.3871 Td
+(1414 // gcc from delaying the above assignments.\)) 222.7942 Tj
+0 -170.8805 Td
+(1415 xchg\(&lock->locked, 0\);) 131.0554 Tj
+0 -180.3739 Td
+(1416 ) 21.8426 Tj
+0 -189.8672 Td
+(1417 popcli\(\);) 69.8962 Tj
+0 -199.3606 Td
(1418 }) 26.2111 Tj
-0 -208.854 Td
+0 -208.8539 Td
(1419 ) 21.8426 Tj
-0 -218.347 Td
-(1420 // Acquire the lock.) 109.213 Tj
-0 -227.841 Td
-(1421 // Loops \(spins\) until the lock is acquired.) 214.057 Tj
+0 -218.3473 Td
+(1420 // Record the current call stack in pcs[] by following the\
+ %ebp chain.) 327.6386 Tj
+0 -227.8407 Td
+(1421 void) 39.3166 Tj
0 -237.334 Td
-(1422 // \(Because contention is handled by spinning,) 222.794 Tj
-0 -246.827 Td
-(1423 // must not go to sleep holding any locks.\)) 209.689 Tj
-0 -256.321 Td
-(1424 void) 39.3166 Tj
-0 -265.814 Td
-(1425 acquire\(struct spinlock *lock\)) 152.898 Tj
-0 -275.307 Td
-(1426 {) 26.2111 Tj
-0 -284.801 Td
-(1427 if\(holding\(lock\)\)) 104.844 Tj
-0 -294.294 Td
-(1428 panic\("acquire"\);) 113.581 Tj
-0 -303.788 Td
-(1429 ) 21.8426 Tj
-0 -313.281 Td
-(1430 if\(cpus[cpu\(\)].nlock == 0\)) 144.161 Tj
-0 -322.774 Td
-(1431 cli\(\);) 65.5277 Tj
-0 -332.268 Td
-(1432 cpus[cpu\(\)].nlock++;) 117.95 Tj
+(1422 getcallerpcs\(void *v, uint pcs[]\)) 166.0035 Tj
+0 -246.8274 Td
+(1423 {) 26.2111 Tj
+0 -256.3207 Td
+(1424 uint *ebp;) 74.2647 Tj
+0 -265.8141 Td
+(1425 int i;) 56.7907 Tj
+0 -275.3075 Td
+(1426 ) 21.8426 Tj
+0 -284.8008 Td
+(1427 ebp = \(uint*\)v - 2;) 113.5814 Tj
+0 -294.2942 Td
+(1428 for\(i = 0; i < 10; i++\){) 135.4239 Tj
+0 -303.7875 Td
+(1429 if\(ebp == 0 || ebp == \(uint*\)0xffffffff\)) 214.0572 Tj
+0 -313.2809 Td
+(1430 break;) 74.2647 Tj
+0 -322.7743 Td
+(1431 pcs[i] = ebp[1]; // saved %eip) 187.8461 Tj
+0 -332.2676 Td
+(1432 ebp = \(uint*\)ebp[0]; // saved %ebp) 187.8461 Tj
0 -341.761 Td
-(1433 ) 21.8426 Tj
-0 -351.254 Td
-(1434 while\(cmpxchg\(0, 1, &lock->locked\) == 1\)) 205.32 Tj
-0 -360.748 Td
-(1435 ;) 43.6851 Tj
-0 -370.241 Td
-(1436 ) 21.8426 Tj
-0 -379.734 Td
-(1437 // Serialize instructions: now that lock is acquired, ma\
-ke sure) 305.796 Tj
-0 -389.228 Td
-(1438 // we wait for all pending writes from other processors.) 275.216 Tj
-0 -398.721 Td
-(1439 cpuid\(0, 0, 0, 0, 0\); // memory barrier \(see Ch 7, I\
-A-32 manual vol 3\)) 340.744 Tj
-0 -408.214 Td
-(1440 ) 21.8426 Tj
-0 -417.708 Td
-(1441 // Record info about lock acquisition for debugging.) 257.742 Tj
-0 -427.201 Td
-(1442 // The +10 is only so that we can tell the difference) 262.111 Tj
-0 -436.695 Td
-(1443 // between forgetting to initialize lock->cpu) 227.163 Tj
-0 -446.188 Td
-(1444 // and holding a lock on cpu 0.) 166.004 Tj
-0 -455.681 Td
-(1445 lock->cpu = cpu\(\) + 10;) 131.055 Tj
-0 -465.175 Td
-(1446 getcallerpcs\(&lock, lock->pcs\);) 166.004 Tj
+(1433 }) 34.9481 Tj
+0 -351.2543 Td
+(1434 for\(; i < 10; i++\)) 109.2129 Tj
+0 -360.7477 Td
+(1435 pcs[i] = 0;) 87.3703 Tj
+0 -370.2411 Td
+(1436 }) 26.2111 Tj
+0 -379.7344 Td
+(1437 ) 21.8426 Tj
+0 -389.2278 Td
+(1438 // Check whether this cpu is holding the lock.) 222.7942 Tj
+0 -398.7211 Td
+(1439 int) 34.9481 Tj
+0 -408.2145 Td
+(1440 holding\(struct spinlock *lock\)) 152.898 Tj
+0 -417.7079 Td
+(1441 {) 26.2111 Tj
+0 -427.2012 Td
+(1442 return lock->locked && lock->cpu == cpu\(\) + 10;) 235.8998 Tj
+0 -436.6946 Td
+(1443 }) 26.2111 Tj
+0 -446.1879 Td
+(1444 ) 21.8426 Tj
+0 -455.6813 Td
+(1445 ) 21.8426 Tj
+0 -465.1747 Td
+(1446 ) 21.8426 Tj
0 -474.668 Td
-(1447 }) 26.2111 Tj
-0 -484.161 Td
+(1447 ) 21.8426 Tj
+0 -484.1614 Td
(1448 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(1449 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 14) 34.9481 Tj
Q
Q
@@ -7568,115 +7594,113 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/spinlock.c Page 2) 179.109 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:04 2008 xv6/spinlock.c Page 3) 179.1091 Tj
0 -28.4801 Td
-(1450 // Release the lock.) 109.213 Tj
+(1450 // Pushcli/popcli are like cli/sti except that they are ma\
+tched:) 301.4275 Tj
0 -37.9735 Td
-(1451 void) 39.3166 Tj
+(1451 // it takes two popcli to undo two pushcli. Also, if inte\
+rrupts) 301.4275 Tj
0 -47.4668 Td
-(1452 release\(struct spinlock *lock\)) 152.898 Tj
+(1452 // are off, then pushcli, popcli leaves them off.) 235.8998 Tj
0 -56.9602 Td
-(1453 {) 26.2111 Tj
+(1453 ) 21.8426 Tj
0 -66.4535 Td
-(1454 if\(!holding\(lock\)\)) 109.213 Tj
+(1454 void) 39.3166 Tj
0 -75.9469 Td
-(1455 panic\("release"\);) 113.581 Tj
+(1455 pushcli\(void\)) 78.6333 Tj
0 -85.4403 Td
-(1456 ) 21.8426 Tj
+(1456 {) 26.2111 Tj
0 -94.9336 Td
-(1457 lock->pcs[0] = 0;) 104.844 Tj
+(1457 int eflags;) 78.6333 Tj
0 -104.427 Td
-(1458 lock->cpu = 0xffffffff;) 131.055 Tj
-0 -113.92 Td
-(1459 ) 21.8426 Tj
-0 -123.414 Td
-(1460 // Serialize instructions: before unlocking the lock, ma\
-ke sure) 305.796 Tj
-0 -132.907 Td
-(1461 // to flush any pending memory writes from this processo\
-r.) 283.953 Tj
-0 -142.4 Td
-(1462 cpuid\(0, 0, 0, 0, 0\); // memory barrier \(see Ch 7, I\
-A-32 manual vol 3\)) 340.744 Tj
-0 -151.894 Td
-(1463 ) 21.8426 Tj
-0 -161.387 Td
-(1464 lock->locked = 0;) 104.844 Tj
-0 -170.88 Td
-(1465 if\(--cpus[cpu\(\)].nlock == 0\)) 152.898 Tj
-0 -180.374 Td
-(1466 sti\(\);) 65.5277 Tj
-0 -189.867 Td
-(1467 }) 26.2111 Tj
-0 -199.361 Td
-(1468 ) 21.8426 Tj
-0 -208.854 Td
-(1469 // Record the current call stack in pcs[] by following the\
- %ebp chain.) 327.639 Tj
-0 -218.347 Td
-(1470 void) 39.3166 Tj
-0 -227.841 Td
-(1471 getcallerpcs\(void *v, uint pcs[]\)) 166.004 Tj
+(1458 ) 21.8426 Tj
+0 -113.9203 Td
+(1459 eflags = read_eflags\(\);) 131.0554 Tj
+0 -123.4137 Td
+(1460 cli\(\);) 56.7907 Tj
+0 -132.9071 Td
+(1461 if\(cpus[cpu\(\)].ncli++ == 0\)) 148.5295 Tj
+0 -142.4004 Td
+(1462 cpus[cpu\(\)].intena = eflags & FL_IF;) 196.5831 Tj
+0 -151.8938 Td
+(1463 }) 26.2111 Tj
+0 -161.3871 Td
+(1464 ) 21.8426 Tj
+0 -170.8805 Td
+(1465 void) 39.3166 Tj
+0 -180.3739 Td
+(1466 popcli\(void\)) 74.2647 Tj
+0 -189.8672 Td
+(1467 {) 26.2111 Tj
+0 -199.3606 Td
+(1468 if\(read_eflags\(\)&FL_IF\)) 131.0554 Tj
+0 -208.8539 Td
+(1469 panic\("popcli - interruptible"\);) 179.1091 Tj
+0 -218.3473 Td
+(1470 if\(--cpus[cpu\(\)].ncli < 0\)) 144.161 Tj
+0 -227.8407 Td
+(1471 panic\("popcli"\);) 109.2129 Tj
0 -237.334 Td
-(1472 {) 26.2111 Tj
-0 -246.827 Td
-(1473 uint *ebp;) 74.2647 Tj
-0 -256.321 Td
-(1474 int i;) 56.7907 Tj
-0 -265.814 Td
+(1472 if\(cpus[cpu\(\)].ncli == 0 && cpus[cpu\(\)].intena\)) 235.8998 Tj
+0 -246.8274 Td
+(1473 sti\(\);) 65.5277 Tj
+0 -256.3207 Td
+(1474 }) 26.2111 Tj
+0 -265.8141 Td
(1475 ) 21.8426 Tj
-0 -275.307 Td
-(1476 ebp = \(uint*\)v - 2;) 113.581 Tj
-0 -284.801 Td
-(1477 for\(i = 0; i < 10; i++\){) 135.424 Tj
-0 -294.294 Td
-(1478 if\(ebp == 0 || ebp == \(uint*\)0xffffffff\)) 214.057 Tj
-0 -303.788 Td
-(1479 break;) 74.2647 Tj
-0 -313.281 Td
-(1480 pcs[i] = ebp[1]; // saved %eip) 187.846 Tj
-0 -322.774 Td
-(1481 ebp = \(uint*\)ebp[0]; // saved %ebp) 187.846 Tj
-0 -332.268 Td
-(1482 }) 34.9481 Tj
+0 -275.3075 Td
+(1476 ) 21.8426 Tj
+0 -284.8008 Td
+(1477 ) 21.8426 Tj
+0 -294.2942 Td
+(1478 ) 21.8426 Tj
+0 -303.7875 Td
+(1479 ) 21.8426 Tj
+0 -313.2809 Td
+(1480 ) 21.8426 Tj
+0 -322.7743 Td
+(1481 ) 21.8426 Tj
+0 -332.2676 Td
+(1482 ) 21.8426 Tj
0 -341.761 Td
-(1483 for\(; i < 10; i++\)) 109.213 Tj
-0 -351.254 Td
-(1484 pcs[i] = 0;) 87.3703 Tj
-0 -360.748 Td
-(1485 }) 26.2111 Tj
-0 -370.241 Td
+(1483 ) 21.8426 Tj
+0 -351.2543 Td
+(1484 ) 21.8426 Tj
+0 -360.7477 Td
+(1485 ) 21.8426 Tj
+0 -370.2411 Td
(1486 ) 21.8426 Tj
-0 -379.734 Td
-(1487 // Check whether this cpu is holding the lock.) 222.794 Tj
-0 -389.228 Td
-(1488 int) 34.9481 Tj
-0 -398.721 Td
-(1489 holding\(struct spinlock *lock\)) 152.898 Tj
-0 -408.214 Td
-(1490 {) 26.2111 Tj
-0 -417.708 Td
-(1491 return lock->locked && lock->cpu == cpu\(\) + 10;) 235.9 Tj
-0 -427.201 Td
-(1492 }) 26.2111 Tj
-0 -436.695 Td
+0 -379.7344 Td
+(1487 ) 21.8426 Tj
+0 -389.2278 Td
+(1488 ) 21.8426 Tj
+0 -398.7211 Td
+(1489 ) 21.8426 Tj
+0 -408.2145 Td
+(1490 ) 21.8426 Tj
+0 -417.7079 Td
+(1491 ) 21.8426 Tj
+0 -427.2012 Td
+(1492 ) 21.8426 Tj
+0 -436.6946 Td
(1493 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(1494 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(1495 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(1496 ) 21.8426 Tj
0 -474.668 Td
(1497 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(1498 ) 21.8426 Tj
-0 -493.655 Td
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(1499 ) 21.8426 Tj
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(Sheet 14) 34.9481 Tj
Q
Q
@@ -7705,8 +7729,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -7721,119 +7744,119 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
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-(1500 // Segments in proc->gdt) 126.687 Tj
+(1500 // Segments in proc->gdt) 126.6869 Tj
0 -37.9735 Td
-(1501 #define SEG_KCODE 1 // kernel code) 174.741 Tj
+(1501 #define SEG_KCODE 1 // kernel code) 174.7406 Tj
0 -47.4668 Td
-(1502 #define SEG_KDATA 2 // kernel data+stack) 200.952 Tj
+(1502 #define SEG_KDATA 2 // kernel data+stack) 200.9517 Tj
0 -56.9602 Td
-(1503 #define SEG_UCODE 3) 104.844 Tj
+(1503 #define SEG_UCODE 3) 104.8443 Tj
0 -66.4535 Td
-(1504 #define SEG_UDATA 4) 104.844 Tj
+(1504 #define SEG_UDATA 4) 104.8443 Tj
0 -75.9469 Td
-(1505 #define SEG_TSS 5 // this process's task state) 235.9 Tj
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0 -85.4403 Td
-(1506 #define NSEGS 6) 104.844 Tj
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(1507 ) 21.8426 Tj
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-(1508 // Saved registers for kernel context switches.) 227.163 Tj
-0 -113.92 Td
-(1509 // Don't need to save all the %fs etc. segment registers,) 270.848 Tj
-0 -123.414 Td
-(1510 // because they are constant across kernel contexts.) 249.005 Tj
-0 -132.907 Td
-(1511 // Save all the regular registers so we don't need to care) 275.216 Tj
-0 -142.4 Td
+(1508 // Saved registers for kernel context switches.) 227.1628 Tj
+0 -113.9203 Td
+(1509 // Don't need to save all the %fs etc. segment registers,) 270.8479 Tj
+0 -123.4137 Td
+(1510 // because they are constant across kernel contexts.) 249.0053 Tj
+0 -132.9071 Td
+(1511 // Save all the regular registers so we don't need to care) 275.2164 Tj
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(1512 // which are caller save, but not the return register %eax\
-.) 279.585 Tj
-0 -151.894 Td
-(1513 // \(Not saving %eax just simplifies the switching code.\)) 266.479 Tj
-0 -161.387 Td
-(1514 // The layout of context must match code in swtch.S.) 249.005 Tj
-0 -170.88 Td
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+0 -170.8805 Td
(1515 struct context {) 91.7388 Tj
-0 -180.374 Td
+0 -180.3739 Td
(1516 int eip;) 65.5277 Tj
-0 -189.867 Td
+0 -189.8672 Td
(1517 int esp;) 65.5277 Tj
-0 -199.361 Td
+0 -199.3606 Td
(1518 int ebx;) 65.5277 Tj
-0 -208.854 Td
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(1519 int ecx;) 65.5277 Tj
-0 -218.347 Td
+0 -218.3473 Td
(1520 int edx;) 65.5277 Tj
-0 -227.841 Td
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(1521 int esi;) 65.5277 Tj
0 -237.334 Td
(1522 int edi;) 65.5277 Tj
-0 -246.827 Td
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(1523 int ebp;) 65.5277 Tj
-0 -256.321 Td
+0 -256.3207 Td
(1524 };) 30.5796 Tj
-0 -265.814 Td
+0 -265.8141 Td
(1525 ) 21.8426 Tj
-0 -275.307 Td
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(1526 enum proc_state { UNUSED, EMBRYO, SLEEPING, RUNNABLE, RUNN\
-ING, ZOMBIE };) 336.376 Tj
-0 -284.801 Td
+ING, ZOMBIE };) 336.3756 Tj
+0 -284.8008 Td
(1527 ) 21.8426 Tj
-0 -294.294 Td
-(1528 // Per-process state) 109.213 Tj
-0 -303.788 Td
+0 -294.2942 Td
+(1528 // Per-process state) 109.2129 Tj
+0 -303.7875 Td
(1529 struct proc {) 78.6333 Tj
-0 -313.281 Td
+0 -313.2809 Td
(1530 char *mem; // Start of process memory \(k\
-ernel address\)) 332.007 Tj
-0 -322.774 Td
+ernel address\)) 332.0071 Tj
+0 -322.7743 Td
(1531 uint sz; // Size of process memory \(by\
tes\)) 288.322 Tj
-0 -332.268 Td
+0 -332.2676 Td
(1532 char *kstack; // Bottom of kernel stack for \
-this process) 327.639 Tj
+this process) 327.6386 Tj
0 -341.761 Td
-(1533 enum proc_state state; // Process state) 214.057 Tj
-0 -351.254 Td
-(1534 int pid; // Process ID) 200.952 Tj
-0 -360.748 Td
-(1535 struct proc *parent; // Parent process) 218.426 Tj
-0 -370.241 Td
+(1533 enum proc_state state; // Process state) 214.0572 Tj
+0 -351.2543 Td
+(1534 int pid; // Process ID) 200.9517 Tj
+0 -360.7477 Td
+(1535 struct proc *parent; // Parent process) 218.4257 Tj
+0 -370.2411 Td
(1536 void *chan; // If non-zero, sleeping on ch\
-an) 283.953 Tj
-0 -379.734 Td
+an) 283.9534 Tj
+0 -379.7344 Td
(1537 int killed; // If non-zero, have been kill\
-ed) 283.953 Tj
-0 -389.228 Td
-(1538 struct file *ofile[NOFILE]; // Open files) 214.057 Tj
-0 -398.721 Td
-(1539 struct inode *cwd; // Current directory) 231.531 Tj
-0 -408.214 Td
-(1540 struct context context; // Switch here to run process) 270.848 Tj
-0 -417.708 Td
+ed) 283.9534 Tj
+0 -389.2278 Td
+(1538 struct file *ofile[NOFILE]; // Open files) 214.0572 Tj
+0 -398.7211 Td
+(1539 struct inode *cwd; // Current directory) 231.5313 Tj
+0 -408.2145 Td
+(1540 struct context context; // Switch here to run process) 270.8479 Tj
+0 -417.7079 Td
(1541 struct trapframe *tf; // Trap frame for current inte\
rrupt) 297.059 Tj
-0 -427.201 Td
-(1542 char name[16]; // Process name \(debugging\)) 262.111 Tj
-0 -436.695 Td
+0 -427.2012 Td
+(1542 char name[16]; // Process name \(debugging\)) 262.1109 Tj
+0 -436.6946 Td
(1543 };) 30.5796 Tj
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(1544 ) 21.8426 Tj
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(1545 ) 21.8426 Tj
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(1546 ) 21.8426 Tj
0 -474.668 Td
(1547 ) 21.8426 Tj
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(1548 ) 21.8426 Tj
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+0 -493.6547 Td
(1549 ) 21.8426 Tj
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+0 -522.1348 Td
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Q
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@@ -7848,118 +7871,117 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
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0 -28.4801 Td
(1550 // Process memory is laid out contiguously, low addresses \
-first:) 301.427 Tj
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0 -37.9735 Td
(1551 // text) 61.1592 Tj
0 -47.4668 Td
-(1552 // original data and bss) 135.424 Tj
+(1552 // original data and bss) 135.4239 Tj
0 -56.9602 Td
-(1553 // fixed-size stack) 113.581 Tj
+(1553 // fixed-size stack) 113.5814 Tj
0 -66.4535 Td
-(1554 // expandable heap) 109.213 Tj
+(1554 // expandable heap) 109.2129 Tj
0 -75.9469 Td
(1555 ) 21.8426 Tj
0 -85.4403 Td
-(1556 // Arrange that cp point to the struct proc that this) 253.374 Tj
+(1556 // Per-CPU state) 91.7388 Tj
0 -94.9336 Td
-(1557 // CPU is currently running. Such preprocessor) 227.163 Tj
+(1557 struct cpu {) 74.2647 Tj
0 -104.427 Td
-(1558 // subterfuge can be confusing, but saves a lot of typing.) 275.216 Tj
-0 -113.92 Td
-(1559 extern struct proc *curproc[NCPU]; // Current \(running\)\
- process per CPU) 336.376 Tj
-0 -123.414 Td
-(1560 #define cp \(curproc[cpu\(\)]\) // Current process on thi\
-s CPU) 279.585 Tj
-0 -132.907 Td
-(1561 ) 21.8426 Tj
-0 -142.4 Td
-(1562 ) 21.8426 Tj
-0 -151.894 Td
-(1563 #define MPSTACK 512) 104.844 Tj
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-(1564 ) 21.8426 Tj
-0 -170.88 Td
-(1565 // Per-CPU state) 91.7388 Tj
-0 -180.374 Td
-(1566 struct cpu {) 74.2647 Tj
-0 -189.867 Td
-(1567 uchar apicid; // Local APIC ID) 222.794 Tj
-0 -199.361 Td
-(1568 struct context context; // Switch here to enter sche\
+(1558 uchar apicid; // Local APIC ID) 222.7942 Tj
+0 -113.9203 Td
+(1559 struct proc *curproc; // Process currently running\
+.) 279.5849 Tj
+0 -123.4137 Td
+(1560 struct context context; // Switch here to enter sche\
duler) 297.059 Tj
-0 -208.854 Td
-(1569 struct taskstate ts; // Used by x86 to find stack\
- for interrupt) 336.376 Tj
-0 -218.347 Td
-(1570 struct segdesc gdt[NSEGS]; // x86 global descriptor tab\
-le) 283.953 Tj
-0 -227.841 Td
-(1571 char mpstack[MPSTACK]; // Per-CPU startup stack) 257.742 Tj
+0 -132.9071 Td
+(1561 struct taskstate ts; // Used by x86 to find stack\
+ for interrupt) 336.3756 Tj
+0 -142.4004 Td
+(1562 struct segdesc gdt[NSEGS]; // x86 global descriptor tab\
+le) 283.9534 Tj
+0 -151.8938 Td
+(1563 volatile uint booted; // Has the CPU started?) 257.7424 Tj
+0 -161.3871 Td
+(1564 int ncli; // Depth of pushcli nesting.) 275.2164 Tj
+0 -170.8805 Td
+(1565 int intena; // Were interrupts enabled b\
+efore pushcli?) 336.3756 Tj
+0 -180.3739 Td
+(1566 };) 30.5796 Tj
+0 -189.8672 Td
+(1567 ) 21.8426 Tj
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+(1568 extern struct cpu cpus[NCPU];) 148.5295 Tj
+0 -208.8539 Td
+(1569 extern int ncpu;) 91.7388 Tj
+0 -218.3473 Td
+(1570 ) 21.8426 Tj
+0 -227.8407 Td
+(1571 // "cp" is a short alias for curproc\(\).) 192.2146 Tj
0 -237.334 Td
-(1572 volatile int booted; // Has the CPU started?) 253.374 Tj
-0 -246.827 Td
-(1573 int nlock; // Number of locks currently\
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-0 -256.321 Td
-(1574 };) 30.5796 Tj
-0 -265.814 Td
+(1572 // It gets used enough to make this worthwhile.) 227.1628 Tj
+0 -246.8274 Td
+(1573 #define cp curproc\(\)) 109.2129 Tj
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+(1574 ) 21.8426 Tj
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(1575 ) 21.8426 Tj
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-(1576 extern struct cpu cpus[NCPU];) 148.529 Tj
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-(1577 extern int ncpu;) 91.7388 Tj
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+(1576 ) 21.8426 Tj
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(1578 ) 21.8426 Tj
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(1579 ) 21.8426 Tj
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(1580 ) 21.8426 Tj
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(1581 ) 21.8426 Tj
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(1582 ) 21.8426 Tj
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(1583 ) 21.8426 Tj
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(1584 ) 21.8426 Tj
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+0 -360.7477 Td
(1585 ) 21.8426 Tj
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(1586 ) 21.8426 Tj
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(1587 ) 21.8426 Tj
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(1590 ) 21.8426 Tj
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(1591 ) 21.8426 Tj
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(1592 ) 21.8426 Tj
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(1593 ) 21.8426 Tj
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(1594 ) 21.8426 Tj
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(1595 ) 21.8426 Tj
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(1596 ) 21.8426 Tj
0 -474.668 Td
(1597 ) 21.8426 Tj
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(1598 ) 21.8426 Tj
-0 -493.655 Td
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(1599 ) 21.8426 Tj
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(Sheet 15) 34.9481 Tj
Q
Q
@@ -7988,8 +8010,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
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@@ -8004,16 +8025,16 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
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0 -28.4801 Td
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(1601 #include "defs.h") 96.1073 Tj
0 -47.4668 Td
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(1605 #include "proc.h") 96.1073 Tj
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-(1606 #include "spinlock.h") 113.581 Tj
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0 -94.9336 Td
(1607 ) 21.8426 Tj
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-(1620 {) 26.2111 Tj
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-(1621 initlock\(&proc_table_lock, "proc_table"\);) 209.689 Tj
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+(1613 int nextpid = 1;) 91.7388 Tj
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0 -237.334 Td
-(1622 }) 26.2111 Tj
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-(1623 ) 21.8426 Tj
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-(1624 // Look in the process table for an UNUSED proc.) 231.531 Tj
-0 -265.814 Td
-(1625 // If found, change state to EMBRYO and return it.) 240.268 Tj
-0 -275.307 Td
-(1626 // Otherwise return 0.) 117.95 Tj
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-(1627 static struct proc*) 104.844 Tj
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-(1628 allocproc\(void\)) 87.3703 Tj
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-(1629 {) 26.2111 Tj
-0 -313.281 Td
-(1630 int i;) 56.7907 Tj
-0 -322.774 Td
-(1631 struct proc *p;) 96.1073 Tj
-0 -332.268 Td
-(1632 ) 21.8426 Tj
+(1622 ) 21.8426 Tj
+0 -246.8274 Td
+(1623 // Look in the process table for an UNUSED proc.) 231.5313 Tj
+0 -256.3207 Td
+(1624 // If found, change state to EMBRYO and return it.) 240.2683 Tj
+0 -265.8141 Td
+(1625 // Otherwise return 0.) 117.9499 Tj
+0 -275.3075 Td
+(1626 static struct proc*) 104.8443 Tj
+0 -284.8008 Td
+(1627 allocproc\(void\)) 87.3703 Tj
+0 -294.2942 Td
+(1628 {) 26.2111 Tj
+0 -303.7875 Td
+(1629 int i;) 56.7907 Tj
+0 -313.2809 Td
+(1630 struct proc *p;) 96.1073 Tj
+0 -322.7743 Td
+(1631 ) 21.8426 Tj
+0 -332.2676 Td
+(1632 acquire\(&proc_table_lock\);) 144.161 Tj
0 -341.761 Td
-(1633 acquire\(&proc_table_lock\);) 144.161 Tj
-0 -351.254 Td
-(1634 for\(i = 0; i < NPROC; i++\){) 148.529 Tj
-0 -360.748 Td
-(1635 p = &proc[i];) 96.1073 Tj
-0 -370.241 Td
-(1636 if\(p->state == UNUSED\){) 139.792 Tj
-0 -379.734 Td
-(1637 p->state = EMBRYO;) 126.687 Tj
-0 -389.228 Td
-(1638 p->pid = nextpid++;) 131.055 Tj
-0 -398.721 Td
-(1639 release\(&proc_table_lock\);) 161.635 Tj
-0 -408.214 Td
-(1640 return p;) 87.3703 Tj
-0 -417.708 Td
-(1641 }) 43.6851 Tj
-0 -427.201 Td
-(1642 }) 34.9481 Tj
-0 -436.695 Td
-(1643 release\(&proc_table_lock\);) 144.161 Tj
-0 -446.188 Td
-(1644 return 0;) 69.8962 Tj
-0 -455.681 Td
-(1645 }) 26.2111 Tj
-0 -465.175 Td
+(1633 for\(i = 0; i < NPROC; i++\){) 148.5295 Tj
+0 -351.2543 Td
+(1634 p = &proc[i];) 96.1073 Tj
+0 -360.7477 Td
+(1635 if\(p->state == UNUSED\){) 139.7925 Tj
+0 -370.2411 Td
+(1636 p->state = EMBRYO;) 126.6869 Tj
+0 -379.7344 Td
+(1637 p->pid = nextpid++;) 131.0554 Tj
+0 -389.2278 Td
+(1638 release\(&proc_table_lock\);) 161.635 Tj
+0 -398.7211 Td
+(1639 return p;) 87.3703 Tj
+0 -408.2145 Td
+(1640 }) 43.6851 Tj
+0 -417.7079 Td
+(1641 }) 34.9481 Tj
+0 -427.2012 Td
+(1642 release\(&proc_table_lock\);) 144.161 Tj
+0 -436.6946 Td
+(1643 return 0;) 69.8962 Tj
+0 -446.1879 Td
+(1644 }) 26.2111 Tj
+0 -455.6813 Td
+(1645 ) 21.8426 Tj
+0 -465.1747 Td
(1646 ) 21.8426 Tj
0 -474.668 Td
(1647 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(1648 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(1649 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 16) 34.9481 Tj
Q
Q
@@ -8123,14 +8144,14 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
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-(Aug 30 10:08 2007 xv6/proc.c Page 2) 161.635 Tj
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+(Sep 3 10:05 2008 xv6/proc.c Page 2) 161.635 Tj
0 -28.4801 Td
-(1650 // Grow current process's memory by n bytes.) 214.057 Tj
+(1650 // Grow current process's memory by n bytes.) 214.0572 Tj
0 -37.9735 Td
-(1651 // Return old size on success, -1 on failure.) 218.426 Tj
+(1651 // Return old size on success, -1 on failure.) 218.4257 Tj
0 -47.4668 Td
(1652 int) 34.9481 Tj
0 -56.9602 Td
@@ -8138,102 +8159,102 @@ q
0 -66.4535 Td
(1654 {) 26.2111 Tj
0 -75.9469 Td
-(1655 char *newmem, *oldmem;) 126.687 Tj
+(1655 char *newmem;) 87.3703 Tj
0 -85.4403 Td
(1656 ) 21.8426 Tj
0 -94.9336 Td
(1657 newmem = kalloc\(cp->sz + n\);) 152.898 Tj
0 -104.427 Td
(1658 if\(newmem == 0\)) 96.1073 Tj
-0 -113.92 Td
+0 -113.9203 Td
(1659 return -1;) 83.0018 Tj
-0 -123.414 Td
-(1660 memmove\(newmem, cp->mem, cp->sz\);) 174.741 Tj
-0 -132.907 Td
+0 -123.4137 Td
+(1660 memmove\(newmem, cp->mem, cp->sz\);) 174.7406 Tj
+0 -132.9071 Td
(1661 memset\(newmem + cp->sz, 0, n\);) 161.635 Tj
-0 -142.4 Td
-(1662 oldmem = cp->mem;) 104.844 Tj
-0 -151.894 Td
-(1663 cp->mem = newmem;) 104.844 Tj
-0 -161.387 Td
-(1664 kfree\(oldmem, cp->sz\);) 126.687 Tj
-0 -170.88 Td
-(1665 cp->sz += n;) 83.0018 Tj
-0 -180.374 Td
-(1666 return cp->sz - n;) 109.213 Tj
-0 -189.867 Td
+0 -142.4004 Td
+(1662 kfree\(cp->mem, cp->sz\);) 131.0554 Tj
+0 -151.8938 Td
+(1663 cp->mem = newmem;) 104.8443 Tj
+0 -161.3871 Td
+(1664 cp->sz += n;) 83.0018 Tj
+0 -170.8805 Td
+(1665 setupsegs\(cp\);) 91.7388 Tj
+0 -180.3739 Td
+(1666 return cp->sz - n;) 109.2129 Tj
+0 -189.8672 Td
(1667 }) 26.2111 Tj
-0 -199.361 Td
+0 -199.3606 Td
(1668 ) 21.8426 Tj
-0 -208.854 Td
+0 -208.8539 Td
(1669 // Set up CPU's segment descriptors and task state for a g\
-iven process.) 332.007 Tj
-0 -218.347 Td
+iven process.) 332.0071 Tj
+0 -218.3473 Td
(1670 // If p==0, set up for "idle" state for when scheduler\(\)\
- is running.) 318.902 Tj
-0 -227.841 Td
+ is running.) 318.9016 Tj
+0 -227.8407 Td
(1671 void) 39.3166 Tj
0 -237.334 Td
-(1672 setupsegs\(struct proc *p\)) 131.055 Tj
-0 -246.827 Td
+(1672 setupsegs\(struct proc *p\)) 131.0554 Tj
+0 -246.8274 Td
(1673 {) 26.2111 Tj
-0 -256.321 Td
+0 -256.3207 Td
(1674 struct cpu *c;) 91.7388 Tj
-0 -265.814 Td
+0 -265.8141 Td
(1675 ) 21.8426 Tj
-0 -275.307 Td
-(1676 c = &cpus[cpu\(\)];) 104.844 Tj
-0 -284.801 Td
-(1677 c->ts.ss0 = SEG_KDATA << 3;) 148.529 Tj
-0 -294.294 Td
-(1678 if\(p\)) 52.4222 Tj
-0 -303.788 Td
-(1679 c->ts.esp0 = \(uint\)\(p->kstack + KSTACKSIZE\);) 231.531 Tj
-0 -313.281 Td
-(1680 else) 48.0537 Tj
-0 -322.774 Td
-(1681 c->ts.esp0 = 0xffffffff;) 144.161 Tj
-0 -332.268 Td
-(1682 ) 21.8426 Tj
+0 -275.3075 Td
+(1676 pushcli\(\);) 74.2647 Tj
+0 -284.8008 Td
+(1677 c = &cpus[cpu\(\)];) 104.8443 Tj
+0 -294.2942 Td
+(1678 c->ts.ss0 = SEG_KDATA << 3;) 148.5295 Tj
+0 -303.7875 Td
+(1679 if\(p\)) 52.4222 Tj
+0 -313.2809 Td
+(1680 c->ts.esp0 = \(uint\)\(p->kstack + KSTACKSIZE\);) 231.5313 Tj
+0 -322.7743 Td
+(1681 else) 48.0537 Tj
+0 -332.2676 Td
+(1682 c->ts.esp0 = 0xffffffff;) 144.161 Tj
0 -341.761 Td
-(1683 c->gdt[0] = SEG_NULL;) 122.318 Tj
-0 -351.254 Td
-(1684 c->gdt[SEG_KCODE] = SEG\(STA_X|STA_R, 0, 0x100000 + 64*1\
+(1683 ) 21.8426 Tj
+0 -351.2543 Td
+(1684 c->gdt[0] = SEG_NULL;) 122.3184 Tj
+0 -360.7477 Td
+(1685 c->gdt[SEG_KCODE] = SEG\(STA_X|STA_R, 0, 0x100000 + 64*1\
024-1, 0\);) 314.533 Tj
-0 -360.748 Td
-(1685 c->gdt[SEG_KDATA] = SEG\(STA_W, 0, 0xffffffff, 0\);) 244.637 Tj
-0 -370.241 Td
-(1686 c->gdt[SEG_TSS] = SEG16\(STS_T32A, \(uint\)&c->ts, sizeo\
-f\(c->ts\)-1, 0\);) 327.639 Tj
-0 -379.734 Td
-(1687 c->gdt[SEG_TSS].s = 0;) 126.687 Tj
-0 -389.228 Td
-(1688 if\(p\){) 56.7907 Tj
-0 -398.721 Td
-(1689 c->gdt[SEG_UCODE] = SEG\(STA_X|STA_R, \(uint\)p->mem, \
-p->sz-1, DPL_USER\);) 345.113 Tj
-0 -408.214 Td
-(1690 c->gdt[SEG_UDATA] = SEG\(STA_W, \(uint\)p->mem, p->sz-\
-1, DPL_USER\);) 318.902 Tj
-0 -417.708 Td
-(1691 } else {) 65.5277 Tj
-0 -427.201 Td
-(1692 c->gdt[SEG_UCODE] = SEG_NULL;) 166.004 Tj
-0 -436.695 Td
-(1693 c->gdt[SEG_UDATA] = SEG_NULL;) 166.004 Tj
-0 -446.188 Td
-(1694 }) 34.9481 Tj
-0 -455.681 Td
-(1695 ) 21.8426 Tj
-0 -465.175 Td
-(1696 lgdt\(c->gdt, sizeof\(c->gdt\)\);) 157.267 Tj
+0 -370.2411 Td
+(1686 c->gdt[SEG_KDATA] = SEG\(STA_W, 0, 0xffffffff, 0\);) 244.6368 Tj
+0 -379.7344 Td
+(1687 c->gdt[SEG_TSS] = SEG16\(STS_T32A, \(uint\)&c->ts, sizeo\
+f\(c->ts\)-1, 0\);) 327.6386 Tj
+0 -389.2278 Td
+(1688 c->gdt[SEG_TSS].s = 0;) 126.6869 Tj
+0 -398.7211 Td
+(1689 if\(p\){) 56.7907 Tj
+0 -408.2145 Td
+(1690 c->gdt[SEG_UCODE] = SEG\(STA_X|STA_R, \(uint\)p->mem, \
+p->sz-1, DPL_USER\);) 345.1126 Tj
+0 -417.7079 Td
+(1691 c->gdt[SEG_UDATA] = SEG\(STA_W, \(uint\)p->mem, p->sz-\
+1, DPL_USER\);) 318.9016 Tj
+0 -427.2012 Td
+(1692 } else {) 65.5277 Tj
+0 -436.6946 Td
+(1693 c->gdt[SEG_UCODE] = SEG_NULL;) 166.0035 Tj
+0 -446.1879 Td
+(1694 c->gdt[SEG_UDATA] = SEG_NULL;) 166.0035 Tj
+0 -455.6813 Td
+(1695 }) 34.9481 Tj
+0 -465.1747 Td
+(1696 ) 21.8426 Tj
0 -474.668 Td
-(1697 ltr\(SEG_TSS << 3\);) 109.213 Tj
-0 -484.161 Td
-(1698 }) 26.2111 Tj
-0 -493.655 Td
+(1697 ) 21.8426 Tj
+0 -484.1614 Td
+(1698 ) 21.8426 Tj
+0 -493.6547 Td
(1699 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 16) 34.9481 Tj
Q
Q
@@ -8262,8 +8283,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -8278,114 +8298,113 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/proc.c Page 3) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/proc.c Page 3) 161.635 Tj
0 -28.4801 Td
-(1700 // Create a new process copying p as the parent.) 231.531 Tj
+(1700 lgdt\(c->gdt, sizeof\(c->gdt\)\);) 157.2665 Tj
0 -37.9735 Td
-(1701 // Sets up stack to return as if from system call.) 240.268 Tj
+(1701 ltr\(SEG_TSS << 3\);) 109.2129 Tj
0 -47.4668 Td
-(1702 // Caller must set state of returned proc to RUNNABLE.) 257.742 Tj
+(1702 popcli\(\);) 69.8962 Tj
0 -56.9602 Td
-(1703 struct proc*) 74.2647 Tj
+(1703 }) 26.2111 Tj
0 -66.4535 Td
-(1704 copyproc\(struct proc *p\)) 126.687 Tj
+(1704 ) 21.8426 Tj
0 -75.9469 Td
-(1705 {) 26.2111 Tj
+(1705 // Create a new process copying p as the parent.) 231.5313 Tj
0 -85.4403 Td
-(1706 int i;) 56.7907 Tj
+(1706 // Sets up stack to return as if from system call.) 240.2683 Tj
0 -94.9336 Td
-(1707 struct proc *np;) 100.476 Tj
+(1707 // Caller must set state of returned proc to RUNNABLE.) 257.7424 Tj
0 -104.427 Td
-(1708 ) 21.8426 Tj
-0 -113.92 Td
-(1709 // Allocate process.) 117.95 Tj
-0 -123.414 Td
-(1710 if\(\(np = allocproc\(\)\) == 0\)) 148.529 Tj
-0 -132.907 Td
-(1711 return 0;) 78.6333 Tj
-0 -142.4 Td
-(1712 ) 21.8426 Tj
-0 -151.894 Td
-(1713 // Allocate kernel stack.) 139.792 Tj
-0 -161.387 Td
-(1714 if\(\(np->kstack = kalloc\(KSTACKSIZE\)\) == 0\){) 218.426 Tj
-0 -170.88 Td
-(1715 np->state = UNUSED;) 122.318 Tj
-0 -180.374 Td
+(1708 struct proc*) 74.2647 Tj
+0 -113.9203 Td
+(1709 copyproc\(struct proc *p\)) 126.6869 Tj
+0 -123.4137 Td
+(1710 {) 26.2111 Tj
+0 -132.9071 Td
+(1711 int i;) 56.7907 Tj
+0 -142.4004 Td
+(1712 struct proc *np;) 100.4758 Tj
+0 -151.8938 Td
+(1713 ) 21.8426 Tj
+0 -161.3871 Td
+(1714 // Allocate process.) 117.9499 Tj
+0 -170.8805 Td
+(1715 if\(\(np = allocproc\(\)\) == 0\)) 148.5295 Tj
+0 -180.3739 Td
(1716 return 0;) 78.6333 Tj
-0 -189.867 Td
-(1717 }) 34.9481 Tj
-0 -199.361 Td
-(1718 np->tf = \(struct trapframe*\)\(np->kstack + KSTACKSIZE\)\
- - 1;) 283.953 Tj
-0 -208.854 Td
-(1719 ) 21.8426 Tj
-0 -218.347 Td
-(1720 if\(p\){ // Copy process state from p.) 192.215 Tj
-0 -227.841 Td
-(1721 np->parent = p;) 104.844 Tj
+0 -189.8672 Td
+(1717 ) 21.8426 Tj
+0 -199.3606 Td
+(1718 // Allocate kernel stack.) 139.7925 Tj
+0 -208.8539 Td
+(1719 if\(\(np->kstack = kalloc\(KSTACKSIZE\)\) == 0\){) 218.4257 Tj
+0 -218.3473 Td
+(1720 np->state = UNUSED;) 122.3184 Tj
+0 -227.8407 Td
+(1721 return 0;) 78.6333 Tj
0 -237.334 Td
-(1722 memmove\(np->tf, p->tf, sizeof\(*np->tf\)\);) 214.057 Tj
-0 -246.827 Td
-(1723 ) 21.8426 Tj
-0 -256.321 Td
-(1724 np->sz = p->sz;) 104.844 Tj
-0 -265.814 Td
-(1725 if\(\(np->mem = kalloc\(np->sz\)\) == 0\){) 196.583 Tj
-0 -275.307 Td
-(1726 kfree\(np->kstack, KSTACKSIZE\);) 179.109 Tj
-0 -284.801 Td
-(1727 np->kstack = 0;) 113.581 Tj
-0 -294.294 Td
-(1728 np->state = UNUSED;) 131.055 Tj
-0 -303.788 Td
-(1729 return 0;) 87.3703 Tj
-0 -313.281 Td
-(1730 }) 43.6851 Tj
-0 -322.774 Td
-(1731 memmove\(np->mem, p->mem, np->sz\);) 183.478 Tj
-0 -332.268 Td
-(1732 ) 21.8426 Tj
+(1722 }) 34.9481 Tj
+0 -246.8274 Td
+(1723 np->tf = \(struct trapframe*\)\(np->kstack + KSTACKSIZE\)\
+ - 1;) 283.9534 Tj
+0 -256.3207 Td
+(1724 ) 21.8426 Tj
+0 -265.8141 Td
+(1725 if\(p\){ // Copy process state from p.) 192.2146 Tj
+0 -275.3075 Td
+(1726 np->parent = p;) 104.8443 Tj
+0 -284.8008 Td
+(1727 memmove\(np->tf, p->tf, sizeof\(*np->tf\)\);) 214.0572 Tj
+0 -294.2942 Td
+(1728 ) 21.8426 Tj
+0 -303.7875 Td
+(1729 np->sz = p->sz;) 104.8443 Tj
+0 -313.2809 Td
+(1730 if\(\(np->mem = kalloc\(np->sz\)\) == 0\){) 196.5831 Tj
+0 -322.7743 Td
+(1731 kfree\(np->kstack, KSTACKSIZE\);) 179.1091 Tj
+0 -332.2676 Td
+(1732 np->kstack = 0;) 113.5814 Tj
0 -341.761 Td
-(1733 for\(i = 0; i < NOFILE; i++\)) 157.267 Tj
-0 -351.254 Td
-(1734 if\(p->ofile[i]\)) 113.581 Tj
-0 -360.748 Td
-(1735 np->ofile[i] = filedup\(p->ofile[i]\);) 214.057 Tj
-0 -370.241 Td
-(1736 np->cwd = idup\(p->cwd\);) 139.792 Tj
-0 -379.734 Td
-(1737 }) 34.9481 Tj
-0 -389.228 Td
+(1733 np->state = UNUSED;) 131.0554 Tj
+0 -351.2543 Td
+(1734 np->parent = 0;) 113.5814 Tj
+0 -360.7477 Td
+(1735 return 0;) 87.3703 Tj
+0 -370.2411 Td
+(1736 }) 43.6851 Tj
+0 -379.7344 Td
+(1737 memmove\(np->mem, p->mem, np->sz\);) 183.4776 Tj
+0 -389.2278 Td
(1738 ) 21.8426 Tj
-0 -398.721 Td
-(1739 // Set up new context to start executing at forkret \(se\
-e below\).) 310.165 Tj
-0 -408.214 Td
-(1740 memset\(&np->context, 0, sizeof\(np->context\)\);) 227.163 Tj
-0 -417.708 Td
-(1741 np->context.eip = \(uint\)forkret;) 170.372 Tj
-0 -427.201 Td
-(1742 np->context.esp = \(uint\)np->tf;) 166.004 Tj
-0 -436.695 Td
-(1743 ) 21.8426 Tj
-0 -446.188 Td
-(1744 // Clear %eax so that fork system call returns 0 in chil\
-d.) 283.953 Tj
-0 -455.681 Td
-(1745 np->tf->eax = 0;) 100.476 Tj
-0 -465.175 Td
-(1746 return np;) 74.2647 Tj
+0 -398.7211 Td
+(1739 for\(i = 0; i < NOFILE; i++\)) 157.2665 Tj
+0 -408.2145 Td
+(1740 if\(p->ofile[i]\)) 113.5814 Tj
+0 -417.7079 Td
+(1741 np->ofile[i] = filedup\(p->ofile[i]\);) 214.0572 Tj
+0 -427.2012 Td
+(1742 np->cwd = idup\(p->cwd\);) 139.7925 Tj
+0 -436.6946 Td
+(1743 }) 34.9481 Tj
+0 -446.1879 Td
+(1744 ) 21.8426 Tj
+0 -455.6813 Td
+(1745 // Set up new context to start executing at forkret \(se\
+e below\).) 310.1645 Tj
+0 -465.1747 Td
+(1746 memset\(&np->context, 0, sizeof\(np->context\)\);) 227.1628 Tj
0 -474.668 Td
-(1747 }) 26.2111 Tj
-0 -484.161 Td
-(1748 ) 21.8426 Tj
-0 -493.655 Td
+(1747 np->context.eip = \(uint\)forkret;) 170.3721 Tj
+0 -484.1614 Td
+(1748 np->context.esp = \(uint\)np->tf;) 166.0035 Tj
+0 -493.6547 Td
(1749 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 17) 34.9481 Tj
Q
Q
@@ -8400,114 +8419,115 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/proc.c Page 4) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/proc.c Page 4) 161.635 Tj
0 -28.4801 Td
-(1750 // Set up first user process.) 148.529 Tj
+(1750 // Clear %eax so that fork system call returns 0 in chil\
+d.) 283.9534 Tj
0 -37.9735 Td
-(1751 void) 39.3166 Tj
+(1751 np->tf->eax = 0;) 100.4758 Tj
0 -47.4668 Td
-(1752 userinit\(void\)) 83.0018 Tj
+(1752 return np;) 74.2647 Tj
0 -56.9602 Td
-(1753 {) 26.2111 Tj
+(1753 }) 26.2111 Tj
0 -66.4535 Td
-(1754 struct proc *p;) 96.1073 Tj
+(1754 ) 21.8426 Tj
0 -75.9469 Td
-(1755 extern uchar _binary_initcode_start[], _binary_initcode_\
-size[];) 305.796 Tj
+(1755 // Set up first user process.) 148.5295 Tj
0 -85.4403 Td
-(1756 ) 21.8426 Tj
+(1756 void) 39.3166 Tj
0 -94.9336 Td
-(1757 p = copyproc\(0\);) 100.476 Tj
+(1757 userinit\(void\)) 83.0018 Tj
0 -104.427 Td
-(1758 p->sz = PAGE;) 87.3703 Tj
-0 -113.92 Td
-(1759 p->mem = kalloc\(p->sz\);) 131.055 Tj
-0 -123.414 Td
-(1760 p->cwd = namei\("/"\);) 117.95 Tj
-0 -132.907 Td
-(1761 memset\(p->tf, 0, sizeof\(*p->tf\)\);) 174.741 Tj
-0 -142.4 Td
-(1762 p->tf->cs = \(SEG_UCODE << 3\) | DPL_USER;) 205.32 Tj
-0 -151.894 Td
-(1763 p->tf->ds = \(SEG_UDATA << 3\) | DPL_USER;) 205.32 Tj
-0 -161.387 Td
-(1764 p->tf->es = p->tf->ds;) 126.687 Tj
-0 -170.88 Td
-(1765 p->tf->ss = p->tf->ds;) 126.687 Tj
-0 -180.374 Td
-(1766 p->tf->eflags = FL_IF;) 126.687 Tj
-0 -189.867 Td
-(1767 p->tf->esp = p->sz;) 113.581 Tj
-0 -199.361 Td
-(1768 ) 21.8426 Tj
-0 -208.854 Td
-(1769 // Make return address readable; needed for some gcc.) 262.111 Tj
-0 -218.347 Td
-(1770 p->tf->esp -= 4;) 100.476 Tj
-0 -227.841 Td
-(1771 *\(uint*\)\(p->mem + p->tf->esp\) = 0xefefefef;) 218.426 Tj
+(1758 {) 26.2111 Tj
+0 -113.9203 Td
+(1759 struct proc *p;) 96.1073 Tj
+0 -123.4137 Td
+(1760 extern uchar _binary_initcode_start[], _binary_initcode_\
+size[];) 305.796 Tj
+0 -132.9071 Td
+(1761 ) 21.8426 Tj
+0 -142.4004 Td
+(1762 p = copyproc\(0\);) 100.4758 Tj
+0 -151.8938 Td
+(1763 p->sz = PAGE;) 87.3703 Tj
+0 -161.3871 Td
+(1764 p->mem = kalloc\(p->sz\);) 131.0554 Tj
+0 -170.8805 Td
+(1765 p->cwd = namei\("/"\);) 117.9499 Tj
+0 -180.3739 Td
+(1766 memset\(p->tf, 0, sizeof\(*p->tf\)\);) 174.7406 Tj
+0 -189.8672 Td
+(1767 p->tf->cs = \(SEG_UCODE << 3\) | DPL_USER;) 205.3202 Tj
+0 -199.3606 Td
+(1768 p->tf->ds = \(SEG_UDATA << 3\) | DPL_USER;) 205.3202 Tj
+0 -208.8539 Td
+(1769 p->tf->es = p->tf->ds;) 126.6869 Tj
+0 -218.3473 Td
+(1770 p->tf->ss = p->tf->ds;) 126.6869 Tj
+0 -227.8407 Td
+(1771 p->tf->eflags = FL_IF;) 126.6869 Tj
0 -237.334 Td
-(1772 ) 21.8426 Tj
-0 -246.827 Td
-(1773 // On entry to user space, start executing at beginning \
-of initcode.S.) 336.376 Tj
-0 -256.321 Td
-(1774 p->tf->eip = 0;) 96.1073 Tj
-0 -265.814 Td
-(1775 memmove\(p->mem, _binary_initcode_start, \(int\)_binary_\
-initcode_size\);) 327.639 Tj
-0 -275.307 Td
-(1776 safestrcpy\(p->name, "initcode", sizeof\(p->name\)\);) 244.637 Tj
-0 -284.801 Td
-(1777 p->state = RUNNABLE;) 117.95 Tj
-0 -294.294 Td
-(1778 ) 21.8426 Tj
-0 -303.788 Td
-(1779 initproc = p;) 87.3703 Tj
-0 -313.281 Td
-(1780 }) 26.2111 Tj
-0 -322.774 Td
-(1781 ) 21.8426 Tj
-0 -332.268 Td
-(1782 ) 21.8426 Tj
+(1772 p->tf->esp = p->sz;) 113.5814 Tj
+0 -246.8274 Td
+(1773 ) 21.8426 Tj
+0 -256.3207 Td
+(1774 // Make return address readable; needed for some gcc.) 262.1109 Tj
+0 -265.8141 Td
+(1775 p->tf->esp -= 4;) 100.4758 Tj
+0 -275.3075 Td
+(1776 *\(uint*\)\(p->mem + p->tf->esp\) = 0xefefefef;) 218.4257 Tj
+0 -284.8008 Td
+(1777 ) 21.8426 Tj
+0 -294.2942 Td
+(1778 // On entry to user space, start executing at beginning \
+of initcode.S.) 336.3756 Tj
+0 -303.7875 Td
+(1779 p->tf->eip = 0;) 96.1073 Tj
+0 -313.2809 Td
+(1780 memmove\(p->mem, _binary_initcode_start, \(int\)_binary_\
+initcode_size\);) 327.6386 Tj
+0 -322.7743 Td
+(1781 safestrcpy\(p->name, "initcode", sizeof\(p->name\)\);) 244.6368 Tj
+0 -332.2676 Td
+(1782 p->state = RUNNABLE;) 117.9499 Tj
0 -341.761 Td
(1783 ) 21.8426 Tj
-0 -351.254 Td
-(1784 ) 21.8426 Tj
-0 -360.748 Td
-(1785 ) 21.8426 Tj
-0 -370.241 Td
+0 -351.2543 Td
+(1784 initproc = p;) 87.3703 Tj
+0 -360.7477 Td
+(1785 }) 26.2111 Tj
+0 -370.2411 Td
(1786 ) 21.8426 Tj
-0 -379.734 Td
-(1787 ) 21.8426 Tj
-0 -389.228 Td
-(1788 ) 21.8426 Tj
-0 -398.721 Td
-(1789 ) 21.8426 Tj
-0 -408.214 Td
-(1790 ) 21.8426 Tj
-0 -417.708 Td
-(1791 ) 21.8426 Tj
-0 -427.201 Td
+0 -379.7344 Td
+(1787 // Return currently running process.) 179.1091 Tj
+0 -389.2278 Td
+(1788 struct proc*) 74.2647 Tj
+0 -398.7211 Td
+(1789 curproc\(void\)) 78.6333 Tj
+0 -408.2145 Td
+(1790 {) 26.2111 Tj
+0 -417.7079 Td
+(1791 struct proc *p;) 96.1073 Tj
+0 -427.2012 Td
(1792 ) 21.8426 Tj
-0 -436.695 Td
-(1793 ) 21.8426 Tj
-0 -446.188 Td
-(1794 ) 21.8426 Tj
-0 -455.681 Td
-(1795 ) 21.8426 Tj
-0 -465.175 Td
-(1796 ) 21.8426 Tj
+0 -436.6946 Td
+(1793 pushcli\(\);) 74.2647 Tj
+0 -446.1879 Td
+(1794 p = cpus[cpu\(\)].curproc;) 135.4239 Tj
+0 -455.6813 Td
+(1795 popcli\(\);) 69.8962 Tj
+0 -465.1747 Td
+(1796 return p;) 69.8962 Tj
0 -474.668 Td
-(1797 ) 21.8426 Tj
-0 -484.161 Td
+(1797 }) 26.2111 Tj
+0 -484.1614 Td
(1798 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(1799 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 17) 34.9481 Tj
Q
Q
@@ -8536,8 +8556,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -8552,113 +8571,113 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/proc.c Page 5) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/proc.c Page 5) 161.635 Tj
0 -28.4801 Td
-(1800 // Per-CPU process scheduler.) 148.529 Tj
+(1800 // Per-CPU process scheduler.) 148.5295 Tj
0 -37.9735 Td
-(1801 // Each CPU calls scheduler\(\) after setting itself up.) 257.742 Tj
+(1801 // Each CPU calls scheduler\(\) after setting itself up.) 257.7424 Tj
0 -47.4668 Td
-(1802 // Scheduler never returns. It loops, doing:) 218.426 Tj
+(1802 // Scheduler never returns. It loops, doing:) 218.4257 Tj
0 -56.9602 Td
-(1803 // - choose a process to run) 148.529 Tj
+(1803 // - choose a process to run) 148.5295 Tj
0 -66.4535 Td
-(1804 // - longjmp to start running that process) 209.689 Tj
+(1804 // - swtch to start running that process) 200.9517 Tj
0 -75.9469 Td
-(1805 // - eventually that process transfers control back) 249.005 Tj
+(1805 // - eventually that process transfers control) 227.1628 Tj
0 -85.4403 Td
-(1806 // via longjmp back to the scheduler.) 205.32 Tj
+(1806 // via swtch back to the scheduler.) 196.5831 Tj
0 -94.9336 Td
(1807 void) 39.3166 Tj
0 -104.427 Td
(1808 scheduler\(void\)) 87.3703 Tj
-0 -113.92 Td
+0 -113.9203 Td
(1809 {) 26.2111 Tj
-0 -123.414 Td
+0 -123.4137 Td
(1810 struct proc *p;) 96.1073 Tj
-0 -132.907 Td
-(1811 int i;) 56.7907 Tj
-0 -142.4 Td
-(1812 ) 21.8426 Tj
-0 -151.894 Td
-(1813 for\(;;\){) 65.5277 Tj
-0 -161.387 Td
-(1814 // Loop over process table looking for process to run.) 275.216 Tj
-0 -170.88 Td
-(1815 acquire\(&proc_table_lock\);) 152.898 Tj
-0 -180.374 Td
-(1816 ) 21.8426 Tj
-0 -189.867 Td
-(1817 for\(i = 0; i < NPROC; i++\){) 157.267 Tj
-0 -199.361 Td
-(1818 p = &proc[i];) 104.844 Tj
-0 -208.854 Td
-(1819 if\(p->state != RUNNABLE\)) 152.898 Tj
-0 -218.347 Td
-(1820 continue;) 96.1073 Tj
-0 -227.841 Td
-(1821 ) 21.8426 Tj
+0 -132.9071 Td
+(1811 struct cpu *c;) 91.7388 Tj
+0 -142.4004 Td
+(1812 int i;) 56.7907 Tj
+0 -151.8938 Td
+(1813 ) 21.8426 Tj
+0 -161.3871 Td
+(1814 c = &cpus[cpu\(\)];) 104.8443 Tj
+0 -170.8805 Td
+(1815 for\(;;\){) 65.5277 Tj
+0 -180.3739 Td
+(1816 // Enable interrupts on this processor.) 209.6887 Tj
+0 -189.8672 Td
+(1817 sti\(\);) 65.5277 Tj
+0 -199.3606 Td
+(1818 ) 21.8426 Tj
+0 -208.8539 Td
+(1819 // Loop over process table looking for process to run.) 275.2164 Tj
+0 -218.3473 Td
+(1820 acquire\(&proc_table_lock\);) 152.898 Tj
+0 -227.8407 Td
+(1821 for\(i = 0; i < NPROC; i++\){) 157.2665 Tj
0 -237.334 Td
-(1822 // Switch to chosen process. It is the process's jo\
-b) 279.585 Tj
-0 -246.827 Td
-(1823 // to release proc_table_lock and then reacquire it) 270.848 Tj
-0 -256.321 Td
-(1824 // before jumping back to us.) 174.741 Tj
-0 -265.814 Td
-(1825 cp = p;) 78.6333 Tj
-0 -275.307 Td
-(1826 setupsegs\(p\);) 104.844 Tj
-0 -284.801 Td
-(1827 p->state = RUNNING;) 131.055 Tj
-0 -294.294 Td
-(1828 swtch\(&cpus[cpu\(\)].context, &p->context\);) 227.163 Tj
-0 -303.788 Td
-(1829 ) 21.8426 Tj
-0 -313.281 Td
-(1830 // Process is done running for now.) 200.952 Tj
-0 -322.774 Td
-(1831 // It should have changed its p->state before coming\
- back.) 301.427 Tj
-0 -332.268 Td
-(1832 cp = 0;) 78.6333 Tj
+(1822 p = &proc[i];) 104.8443 Tj
+0 -246.8274 Td
+(1823 if\(p->state != RUNNABLE\)) 152.898 Tj
+0 -256.3207 Td
+(1824 continue;) 96.1073 Tj
+0 -265.8141 Td
+(1825 ) 21.8426 Tj
+0 -275.3075 Td
+(1826 // Switch to chosen process. It is the process's jo\
+b) 279.5849 Tj
+0 -284.8008 Td
+(1827 // to release proc_table_lock and then reacquire it) 270.8479 Tj
+0 -294.2942 Td
+(1828 // before jumping back to us.) 174.7406 Tj
+0 -303.7875 Td
+(1829 c->curproc = p;) 113.5814 Tj
+0 -313.2809 Td
+(1830 setupsegs\(p\);) 104.8443 Tj
+0 -322.7743 Td
+(1831 p->state = RUNNING;) 131.0554 Tj
+0 -332.2676 Td
+(1832 swtch\(&c->context, &p->context\);) 187.8461 Tj
0 -341.761 Td
-(1833 setupsegs\(0\);) 104.844 Tj
-0 -351.254 Td
-(1834 }) 43.6851 Tj
-0 -360.748 Td
-(1835 ) 21.8426 Tj
-0 -370.241 Td
-(1836 release\(&proc_table_lock\);) 152.898 Tj
-0 -379.734 Td
-(1837 }) 34.9481 Tj
-0 -389.228 Td
-(1838 }) 26.2111 Tj
-0 -398.721 Td
-(1839 ) 21.8426 Tj
-0 -408.214 Td
+(1833 ) 21.8426 Tj
+0 -351.2543 Td
+(1834 // Process is done running for now.) 200.9517 Tj
+0 -360.7477 Td
+(1835 // It should have changed its p->state before coming\
+ back.) 301.4275 Tj
+0 -370.2411 Td
+(1836 c->curproc = 0;) 113.5814 Tj
+0 -379.7344 Td
+(1837 setupsegs\(0\);) 104.8443 Tj
+0 -389.2278 Td
+(1838 }) 43.6851 Tj
+0 -398.7211 Td
+(1839 release\(&proc_table_lock\);) 152.898 Tj
+0 -408.2145 Td
(1840 ) 21.8426 Tj
-0 -417.708 Td
-(1841 ) 21.8426 Tj
-0 -427.201 Td
-(1842 ) 21.8426 Tj
-0 -436.695 Td
+0 -417.7079 Td
+(1841 }) 34.9481 Tj
+0 -427.2012 Td
+(1842 }) 26.2111 Tj
+0 -436.6946 Td
(1843 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(1844 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(1845 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(1846 ) 21.8426 Tj
0 -474.668 Td
(1847 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(1848 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(1849 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 18) 34.9481 Tj
Q
Q
@@ -8673,14 +8692,14 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/proc.c Page 6) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/proc.c Page 6) 161.635 Tj
0 -28.4801 Td
-(1850 // Enter scheduler. Must already hold proc_table_lock) 257.742 Tj
+(1850 // Enter scheduler. Must already hold proc_table_lock) 257.7424 Tj
0 -37.9735 Td
-(1851 // and have changed curproc[cpu\(\)]->state.) 205.32 Tj
+(1851 // and have changed curproc[cpu\(\)]->state.) 205.3202 Tj
0 -47.4668 Td
(1852 void) 39.3166 Tj
0 -56.9602 Td
@@ -8688,96 +8707,96 @@ q
0 -66.4535 Td
(1854 {) 26.2111 Tj
0 -75.9469 Td
-(1855 if\(cp->state == RUNNING\)) 135.424 Tj
+(1855 if\(read_eflags\(\)&FL_IF\)) 131.0554 Tj
0 -85.4403 Td
-(1856 panic\("sched running"\);) 139.792 Tj
+(1856 panic\("sched interruptible"\);) 166.0035 Tj
0 -94.9336 Td
-(1857 if\(!holding\(&proc_table_lock\)\)) 161.635 Tj
+(1857 if\(cp->state == RUNNING\)) 135.4239 Tj
0 -104.427 Td
-(1858 panic\("sched proc_table_lock"\);) 174.741 Tj
-0 -113.92 Td
-(1859 if\(cpus[cpu\(\)].nlock != 1\)) 144.161 Tj
-0 -123.414 Td
-(1860 panic\("sched locks"\);) 131.055 Tj
-0 -132.907 Td
-(1861 ) 21.8426 Tj
-0 -142.4 Td
-(1862 swtch\(&cp->context, &cpus[cpu\(\)].context\);) 214.057 Tj
-0 -151.894 Td
-(1863 }) 26.2111 Tj
-0 -161.387 Td
-(1864 ) 21.8426 Tj
-0 -170.88 Td
-(1865 // Give up the CPU for one scheduling round.) 214.057 Tj
-0 -180.374 Td
-(1866 void) 39.3166 Tj
-0 -189.867 Td
-(1867 yield\(void\)) 69.8962 Tj
-0 -199.361 Td
-(1868 {) 26.2111 Tj
-0 -208.854 Td
-(1869 acquire\(&proc_table_lock\);) 144.161 Tj
-0 -218.347 Td
-(1870 cp->state = RUNNABLE;) 122.318 Tj
-0 -227.841 Td
-(1871 sched\(\);) 65.5277 Tj
+(1858 panic\("sched running"\);) 139.7925 Tj
+0 -113.9203 Td
+(1859 if\(!holding\(&proc_table_lock\)\)) 161.635 Tj
+0 -123.4137 Td
+(1860 panic\("sched proc_table_lock"\);) 174.7406 Tj
+0 -132.9071 Td
+(1861 if\(cpus[cpu\(\)].ncli != 1\)) 139.7925 Tj
+0 -142.4004 Td
+(1862 panic\("sched locks"\);) 131.0554 Tj
+0 -151.8938 Td
+(1863 ) 21.8426 Tj
+0 -161.3871 Td
+(1864 swtch\(&cp->context, &cpus[cpu\(\)].context\);) 214.0572 Tj
+0 -170.8805 Td
+(1865 }) 26.2111 Tj
+0 -180.3739 Td
+(1866 ) 21.8426 Tj
+0 -189.8672 Td
+(1867 // Give up the CPU for one scheduling round.) 214.0572 Tj
+0 -199.3606 Td
+(1868 void) 39.3166 Tj
+0 -208.8539 Td
+(1869 yield\(void\)) 69.8962 Tj
+0 -218.3473 Td
+(1870 {) 26.2111 Tj
+0 -227.8407 Td
+(1871 acquire\(&proc_table_lock\);) 144.161 Tj
0 -237.334 Td
-(1872 release\(&proc_table_lock\);) 144.161 Tj
-0 -246.827 Td
-(1873 }) 26.2111 Tj
-0 -256.321 Td
-(1874 ) 21.8426 Tj
-0 -265.814 Td
-(1875 // A fork child's very first scheduling by scheduler\(\)) 257.742 Tj
-0 -275.307 Td
-(1876 // will longjmp here. "Return" to user space.) 222.794 Tj
-0 -284.801 Td
-(1877 void) 39.3166 Tj
-0 -294.294 Td
-(1878 forkret\(void\)) 78.6333 Tj
-0 -303.788 Td
-(1879 {) 26.2111 Tj
-0 -313.281 Td
-(1880 // Still holding proc_table_lock from scheduler.) 240.268 Tj
-0 -322.774 Td
-(1881 release\(&proc_table_lock\);) 144.161 Tj
-0 -332.268 Td
-(1882 ) 21.8426 Tj
+(1872 cp->state = RUNNABLE;) 122.3184 Tj
+0 -246.8274 Td
+(1873 sched\(\);) 65.5277 Tj
+0 -256.3207 Td
+(1874 release\(&proc_table_lock\);) 144.161 Tj
+0 -265.8141 Td
+(1875 }) 26.2111 Tj
+0 -275.3075 Td
+(1876 ) 21.8426 Tj
+0 -284.8008 Td
+(1877 // A fork child's very first scheduling by scheduler\(\)) 257.7424 Tj
+0 -294.2942 Td
+(1878 // will swtch here. "Return" to user space.) 214.0572 Tj
+0 -303.7875 Td
+(1879 void) 39.3166 Tj
+0 -313.2809 Td
+(1880 forkret\(void\)) 78.6333 Tj
+0 -322.7743 Td
+(1881 {) 26.2111 Tj
+0 -332.2676 Td
+(1882 // Still holding proc_table_lock from scheduler.) 240.2683 Tj
0 -341.761 Td
-(1883 // Jump into assembly, never to return.) 200.952 Tj
-0 -351.254 Td
-(1884 forkret1\(cp->tf\);) 104.844 Tj
-0 -360.748 Td
-(1885 }) 26.2111 Tj
-0 -370.241 Td
-(1886 ) 21.8426 Tj
-0 -379.734 Td
-(1887 ) 21.8426 Tj
-0 -389.228 Td
+(1883 release\(&proc_table_lock\);) 144.161 Tj
+0 -351.2543 Td
+(1884 ) 21.8426 Tj
+0 -360.7477 Td
+(1885 // Jump into assembly, never to return.) 200.9517 Tj
+0 -370.2411 Td
+(1886 forkret1\(cp->tf\);) 104.8443 Tj
+0 -379.7344 Td
+(1887 }) 26.2111 Tj
+0 -389.2278 Td
(1888 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(1889 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(1890 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(1891 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(1892 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(1893 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(1894 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(1895 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(1896 ) 21.8426 Tj
0 -474.668 Td
(1897 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(1898 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(1899 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 18) 34.9481 Tj
Q
Q
@@ -8806,8 +8825,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -8822,111 +8840,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/proc.c Page 7) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/proc.c Page 7) 161.635 Tj
0 -28.4801 Td
-(1900 // Atomically release lock and sleep on chan.) 218.426 Tj
+(1900 // Atomically release lock and sleep on chan.) 218.4257 Tj
0 -37.9735 Td
-(1901 // Reacquires lock when reawakened.) 174.741 Tj
+(1901 // Reacquires lock when reawakened.) 174.7406 Tj
0 -47.4668 Td
(1902 void) 39.3166 Tj
0 -56.9602 Td
-(1903 sleep\(void *chan, struct spinlock *lk\)) 187.846 Tj
+(1903 sleep\(void *chan, struct spinlock *lk\)) 187.8461 Tj
0 -66.4535 Td
(1904 {) 26.2111 Tj
0 -75.9469 Td
(1905 if\(cp == 0\)) 78.6333 Tj
0 -85.4403 Td
-(1906 panic\("sleep"\);) 104.844 Tj
+(1906 panic\("sleep"\);) 104.8443 Tj
0 -94.9336 Td
(1907 ) 21.8426 Tj
0 -104.427 Td
(1908 if\(lk == 0\)) 78.6333 Tj
-0 -113.92 Td
+0 -113.9203 Td
(1909 panic\("sleep without lk"\);) 152.898 Tj
-0 -123.414 Td
+0 -123.4137 Td
(1910 ) 21.8426 Tj
-0 -132.907 Td
-(1911 // Must acquire proc_table_lock in order to) 218.426 Tj
-0 -142.4 Td
-(1912 // change p->state and then call sched.) 200.952 Tj
-0 -151.894 Td
-(1913 // Once we hold proc_table_lock, we can be) 214.057 Tj
-0 -161.387 Td
-(1914 // guaranteed that we won't miss any wakeup) 218.426 Tj
-0 -170.88 Td
-(1915 // \(wakeup runs with proc_table_lock locked\),) 227.163 Tj
-0 -180.374 Td
+0 -132.9071 Td
+(1911 // Must acquire proc_table_lock in order to) 218.4257 Tj
+0 -142.4004 Td
+(1912 // change p->state and then call sched.) 200.9517 Tj
+0 -151.8938 Td
+(1913 // Once we hold proc_table_lock, we can be) 214.0572 Tj
+0 -161.3871 Td
+(1914 // guaranteed that we won't miss any wakeup) 218.4257 Tj
+0 -170.8805 Td
+(1915 // \(wakeup runs with proc_table_lock locked\),) 227.1628 Tj
+0 -180.3739 Td
(1916 // so it's okay to release lk.) 161.635 Tj
-0 -189.867 Td
-(1917 if\(lk != &proc_table_lock\){) 148.529 Tj
-0 -199.361 Td
+0 -189.8672 Td
+(1917 if\(lk != &proc_table_lock\){) 148.5295 Tj
+0 -199.3606 Td
(1918 acquire\(&proc_table_lock\);) 152.898 Tj
-0 -208.854 Td
+0 -208.8539 Td
(1919 release\(lk\);) 91.7388 Tj
-0 -218.347 Td
+0 -218.3473 Td
(1920 }) 34.9481 Tj
-0 -227.841 Td
+0 -227.8407 Td
(1921 ) 21.8426 Tj
0 -237.334 Td
(1922 // Go to sleep.) 96.1073 Tj
-0 -246.827 Td
-(1923 cp->chan = chan;) 100.476 Tj
-0 -256.321 Td
-(1924 cp->state = SLEEPING;) 122.318 Tj
-0 -265.814 Td
+0 -246.8274 Td
+(1923 cp->chan = chan;) 100.4758 Tj
+0 -256.3207 Td
+(1924 cp->state = SLEEPING;) 122.3184 Tj
+0 -265.8141 Td
(1925 sched\(\);) 65.5277 Tj
-0 -275.307 Td
+0 -275.3075 Td
(1926 ) 21.8426 Tj
-0 -284.801 Td
+0 -284.8008 Td
(1927 // Tidy up.) 78.6333 Tj
-0 -294.294 Td
+0 -294.2942 Td
(1928 cp->chan = 0;) 87.3703 Tj
-0 -303.788 Td
+0 -303.7875 Td
(1929 ) 21.8426 Tj
-0 -313.281 Td
-(1930 // Reacquire original lock.) 148.529 Tj
-0 -322.774 Td
-(1931 if\(lk != &proc_table_lock\){) 148.529 Tj
-0 -332.268 Td
+0 -313.2809 Td
+(1930 // Reacquire original lock.) 148.5295 Tj
+0 -322.7743 Td
+(1931 if\(lk != &proc_table_lock\){) 148.5295 Tj
+0 -332.2676 Td
(1932 release\(&proc_table_lock\);) 152.898 Tj
0 -341.761 Td
(1933 acquire\(lk\);) 91.7388 Tj
-0 -351.254 Td
+0 -351.2543 Td
(1934 }) 34.9481 Tj
-0 -360.748 Td
+0 -360.7477 Td
(1935 }) 26.2111 Tj
-0 -370.241 Td
+0 -370.2411 Td
(1936 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(1937 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(1938 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(1939 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(1940 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(1941 ) 21.8426 Tj
-0 -427.201 Td
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(1942 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(1943 ) 21.8426 Tj
-0 -446.188 Td
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(1944 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(1945 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(1946 ) 21.8426 Tj
0 -474.668 Td
(1947 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(1948 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(1949 ) 21.8426 Tj
-0 -522.135 Td
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(Sheet 19) 34.9481 Tj
Q
Q
@@ -8941,18 +8959,18 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/proc.c Page 8) 161.635 Tj
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0 -28.4801 Td
-(1950 // Wake up all processes sleeping on chan.) 205.32 Tj
+(1950 // Wake up all processes sleeping on chan.) 205.3202 Tj
0 -37.9735 Td
(1951 // Proc_table_lock must be held.) 161.635 Tj
0 -47.4668 Td
(1952 static void) 69.8962 Tj
0 -56.9602 Td
-(1953 wakeup1\(void *chan\)) 104.844 Tj
+(1953 wakeup1\(void *chan\)) 104.8443 Tj
0 -66.4535 Td
(1954 {) 26.2111 Tj
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@@ -8960,92 +8978,92 @@ q
0 -85.4403 Td
(1956 ) 21.8426 Tj
0 -94.9336 Td
-(1957 for\(p = proc; p < &proc[NPROC]; p++\)) 187.846 Tj
+(1957 for\(p = proc; p < &proc[NPROC]; p++\)) 187.8461 Tj
0 -104.427 Td
-(1958 if\(p->state == SLEEPING && p->chan == chan\)) 227.163 Tj
-0 -113.92 Td
-(1959 p->state = RUNNABLE;) 135.424 Tj
-0 -123.414 Td
+(1958 if\(p->state == SLEEPING && p->chan == chan\)) 227.1628 Tj
+0 -113.9203 Td
+(1959 p->state = RUNNABLE;) 135.4239 Tj
+0 -123.4137 Td
(1960 }) 26.2111 Tj
-0 -132.907 Td
+0 -132.9071 Td
(1961 ) 21.8426 Tj
-0 -142.4 Td
-(1962 // Wake up all processes sleeping on chan.) 205.32 Tj
-0 -151.894 Td
-(1963 // Proc_table_lock is acquired and released.) 214.057 Tj
-0 -161.387 Td
+0 -142.4004 Td
+(1962 // Wake up all processes sleeping on chan.) 205.3202 Tj
+0 -151.8938 Td
+(1963 // Proc_table_lock is acquired and released.) 214.0572 Tj
+0 -161.3871 Td
(1964 void) 39.3166 Tj
-0 -170.88 Td
-(1965 wakeup\(void *chan\)) 100.476 Tj
-0 -180.374 Td
+0 -170.8805 Td
+(1965 wakeup\(void *chan\)) 100.4758 Tj
+0 -180.3739 Td
(1966 {) 26.2111 Tj
-0 -189.867 Td
+0 -189.8672 Td
(1967 acquire\(&proc_table_lock\);) 144.161 Tj
-0 -199.361 Td
+0 -199.3606 Td
(1968 wakeup1\(chan\);) 91.7388 Tj
-0 -208.854 Td
+0 -208.8539 Td
(1969 release\(&proc_table_lock\);) 144.161 Tj
-0 -218.347 Td
+0 -218.3473 Td
(1970 }) 26.2111 Tj
-0 -227.841 Td
+0 -227.8407 Td
(1971 ) 21.8426 Tj
0 -237.334 Td
-(1972 // Kill the process with the given pid.) 192.215 Tj
-0 -246.827 Td
-(1973 // Process won't actually exit until it returns) 227.163 Tj
-0 -256.321 Td
-(1974 // to user space \(see trap in trap.c\).) 187.846 Tj
-0 -265.814 Td
+(1972 // Kill the process with the given pid.) 192.2146 Tj
+0 -246.8274 Td
+(1973 // Process won't actually exit until it returns) 227.1628 Tj
+0 -256.3207 Td
+(1974 // to user space \(see trap in trap.c\).) 187.8461 Tj
+0 -265.8141 Td
(1975 int) 34.9481 Tj
-0 -275.307 Td
+0 -275.3075 Td
(1976 kill\(int pid\)) 78.6333 Tj
-0 -284.801 Td
+0 -284.8008 Td
(1977 {) 26.2111 Tj
-0 -294.294 Td
+0 -294.2942 Td
(1978 struct proc *p;) 96.1073 Tj
-0 -303.788 Td
+0 -303.7875 Td
(1979 ) 21.8426 Tj
-0 -313.281 Td
+0 -313.2809 Td
(1980 acquire\(&proc_table_lock\);) 144.161 Tj
-0 -322.774 Td
-(1981 for\(p = proc; p < &proc[NPROC]; p++\){) 192.215 Tj
-0 -332.268 Td
-(1982 if\(p->pid == pid\){) 117.95 Tj
+0 -322.7743 Td
+(1981 for\(p = proc; p < &proc[NPROC]; p++\){) 192.2146 Tj
+0 -332.2676 Td
+(1982 if\(p->pid == pid\){) 117.9499 Tj
0 -341.761 Td
-(1983 p->killed = 1;) 109.213 Tj
-0 -351.254 Td
-(1984 // Wake process from sleep if necessary.) 222.794 Tj
-0 -360.748 Td
+(1983 p->killed = 1;) 109.2129 Tj
+0 -351.2543 Td
+(1984 // Wake process from sleep if necessary.) 222.7942 Tj
+0 -360.7477 Td
(1985 if\(p->state == SLEEPING\)) 152.898 Tj
-0 -370.241 Td
+0 -370.2411 Td
(1986 p->state = RUNNABLE;) 144.161 Tj
-0 -379.734 Td
+0 -379.7344 Td
(1987 release\(&proc_table_lock\);) 161.635 Tj
-0 -389.228 Td
+0 -389.2278 Td
(1988 return 0;) 87.3703 Tj
-0 -398.721 Td
+0 -398.7211 Td
(1989 }) 43.6851 Tj
-0 -408.214 Td
+0 -408.2145 Td
(1990 }) 34.9481 Tj
-0 -417.708 Td
+0 -417.7079 Td
(1991 release\(&proc_table_lock\);) 144.161 Tj
-0 -427.201 Td
+0 -427.2012 Td
(1992 return -1;) 74.2647 Tj
-0 -436.695 Td
+0 -436.6946 Td
(1993 }) 26.2111 Tj
-0 -446.188 Td
+0 -446.1879 Td
(1994 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(1995 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(1996 ) 21.8426 Tj
0 -474.668 Td
(1997 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(1998 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(1999 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 19) 34.9481 Tj
Q
Q
@@ -9074,8 +9092,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -9090,17 +9107,17 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/proc.c Page 9) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/proc.c Page 9) 161.635 Tj
0 -28.4801 Td
-(2000 // Exit the current process. Does not return.) 222.794 Tj
+(2000 // Exit the current process. Does not return.) 222.7942 Tj
0 -37.9735 Td
-(2001 // Exited processes remain in the zombie state) 222.794 Tj
+(2001 // Exited processes remain in the zombie state) 222.7942 Tj
0 -47.4668 Td
(2002 // until their parent calls wait\(\) to find out they exit\
-ed.) 279.585 Tj
+ed.) 279.5849 Tj
0 -56.9602 Td
(2003 void) 39.3166 Tj
0 -66.4535 Td
@@ -9113,89 +9130,89 @@ ed.) 279.585 Tj
(2007 int fd;) 61.1592 Tj
0 -104.427 Td
(2008 ) 21.8426 Tj
-0 -113.92 Td
-(2009 if\(cp == initproc\)) 109.213 Tj
-0 -123.414 Td
-(2010 panic\("init exiting"\);) 135.424 Tj
-0 -132.907 Td
+0 -113.9203 Td
+(2009 if\(cp == initproc\)) 109.2129 Tj
+0 -123.4137 Td
+(2010 panic\("init exiting"\);) 135.4239 Tj
+0 -132.9071 Td
(2011 ) 21.8426 Tj
-0 -142.4 Td
-(2012 // Close all open files.) 135.424 Tj
-0 -151.894 Td
-(2013 for\(fd = 0; fd < NOFILE; fd++\){) 166.004 Tj
-0 -161.387 Td
-(2014 if\(cp->ofile[fd]\){) 117.95 Tj
-0 -170.88 Td
-(2015 fileclose\(cp->ofile[fd]\);) 157.267 Tj
-0 -180.374 Td
-(2016 cp->ofile[fd] = 0;) 126.687 Tj
-0 -189.867 Td
+0 -142.4004 Td
+(2012 // Close all open files.) 135.4239 Tj
+0 -151.8938 Td
+(2013 for\(fd = 0; fd < NOFILE; fd++\){) 166.0035 Tj
+0 -161.3871 Td
+(2014 if\(cp->ofile[fd]\){) 117.9499 Tj
+0 -170.8805 Td
+(2015 fileclose\(cp->ofile[fd]\);) 157.2665 Tj
+0 -180.3739 Td
+(2016 cp->ofile[fd] = 0;) 126.6869 Tj
+0 -189.8672 Td
(2017 }) 43.6851 Tj
-0 -199.361 Td
+0 -199.3606 Td
(2018 }) 34.9481 Tj
-0 -208.854 Td
+0 -208.8539 Td
(2019 ) 21.8426 Tj
-0 -218.347 Td
+0 -218.3473 Td
(2020 iput\(cp->cwd\);) 91.7388 Tj
-0 -227.841 Td
+0 -227.8407 Td
(2021 cp->cwd = 0;) 83.0018 Tj
0 -237.334 Td
(2022 ) 21.8426 Tj
-0 -246.827 Td
+0 -246.8274 Td
(2023 acquire\(&proc_table_lock\);) 144.161 Tj
-0 -256.321 Td
+0 -256.3207 Td
(2024 ) 21.8426 Tj
-0 -265.814 Td
-(2025 // Parent might be sleeping in proc_wait.) 209.689 Tj
-0 -275.307 Td
-(2026 wakeup1\(cp->parent\);) 117.95 Tj
-0 -284.801 Td
+0 -265.8141 Td
+(2025 // Parent might be sleeping in wait\(\).) 196.5831 Tj
+0 -275.3075 Td
+(2026 wakeup1\(cp->parent\);) 117.9499 Tj
+0 -284.8008 Td
(2027 ) 21.8426 Tj
-0 -294.294 Td
-(2028 // Pass abandoned children to init.) 183.478 Tj
-0 -303.788 Td
-(2029 for\(p = proc; p < &proc[NPROC]; p++\){) 192.215 Tj
-0 -313.281 Td
-(2030 if\(p->parent == cp\){) 126.687 Tj
-0 -322.774 Td
-(2031 p->parent = initproc;) 139.792 Tj
-0 -332.268 Td
+0 -294.2942 Td
+(2028 // Pass abandoned children to init.) 183.4776 Tj
+0 -303.7875 Td
+(2029 for\(p = proc; p < &proc[NPROC]; p++\){) 192.2146 Tj
+0 -313.2809 Td
+(2030 if\(p->parent == cp\){) 126.6869 Tj
+0 -322.7743 Td
+(2031 p->parent = initproc;) 139.7925 Tj
+0 -332.2676 Td
(2032 if\(p->state == ZOMBIE\)) 144.161 Tj
0 -341.761 Td
-(2033 wakeup1\(initproc\);) 135.424 Tj
-0 -351.254 Td
+(2033 wakeup1\(initproc\);) 135.4239 Tj
+0 -351.2543 Td
(2034 }) 43.6851 Tj
-0 -360.748 Td
+0 -360.7477 Td
(2035 }) 34.9481 Tj
-0 -370.241 Td
+0 -370.2411 Td
(2036 ) 21.8426 Tj
-0 -379.734 Td
-(2037 // Jump into the scheduler, never to return.) 222.794 Tj
-0 -389.228 Td
+0 -379.7344 Td
+(2037 // Jump into the scheduler, never to return.) 222.7942 Tj
+0 -389.2278 Td
(2038 cp->killed = 0;) 96.1073 Tj
-0 -398.721 Td
-(2039 cp->state = ZOMBIE;) 113.581 Tj
-0 -408.214 Td
+0 -398.7211 Td
+(2039 cp->state = ZOMBIE;) 113.5814 Tj
+0 -408.2145 Td
(2040 sched\(\);) 65.5277 Tj
-0 -417.708 Td
-(2041 panic\("zombie exit"\);) 122.318 Tj
-0 -427.201 Td
+0 -417.7079 Td
+(2041 panic\("zombie exit"\);) 122.3184 Tj
+0 -427.2012 Td
(2042 }) 26.2111 Tj
-0 -436.695 Td
+0 -436.6946 Td
(2043 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(2044 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(2045 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(2046 ) 21.8426 Tj
0 -474.668 Td
(2047 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(2048 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(2049 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 20) 34.9481 Tj
Q
Q
@@ -9210,14 +9227,14 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/proc.c Page 10) 166.004 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/proc.c Page 10) 166.0035 Tj
0 -28.4801 Td
-(2050 // Wait for a child process to exit and return its pid.) 262.111 Tj
+(2050 // Wait for a child process to exit and return its pid.) 262.1109 Tj
0 -37.9735 Td
-(2051 // Return -1 if this process has no children.) 218.426 Tj
+(2051 // Return -1 if this process has no children.) 218.4257 Tj
0 -47.4668 Td
(2052 int) 34.9481 Tj
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@@ -9227,95 +9244,95 @@ q
0 -75.9469 Td
(2055 struct proc *p;) 96.1073 Tj
0 -85.4403 Td
-(2056 int i, havekids, pid;) 122.318 Tj
+(2056 int i, havekids, pid;) 122.3184 Tj
0 -94.9336 Td
(2057 ) 21.8426 Tj
0 -104.427 Td
(2058 acquire\(&proc_table_lock\);) 144.161 Tj
-0 -113.92 Td
+0 -113.9203 Td
(2059 for\(;;\){) 65.5277 Tj
-0 -123.414 Td
-(2060 // Scan through table looking for zombie children.) 257.742 Tj
-0 -132.907 Td
+0 -123.4137 Td
+(2060 // Scan through table looking for zombie children.) 257.7424 Tj
+0 -132.9071 Td
(2061 havekids = 0;) 96.1073 Tj
-0 -142.4 Td
-(2062 for\(i = 0; i < NPROC; i++\){) 157.267 Tj
-0 -151.894 Td
-(2063 p = &proc[i];) 104.844 Tj
-0 -161.387 Td
+0 -142.4004 Td
+(2062 for\(i = 0; i < NPROC; i++\){) 157.2665 Tj
+0 -151.8938 Td
+(2063 p = &proc[i];) 104.8443 Tj
+0 -161.3871 Td
(2064 if\(p->state == UNUSED\)) 144.161 Tj
-0 -170.88 Td
+0 -170.8805 Td
(2065 continue;) 96.1073 Tj
-0 -180.374 Td
-(2066 if\(p->parent == cp\){) 135.424 Tj
-0 -189.867 Td
-(2067 if\(p->state == ZOMBIE\){) 157.267 Tj
-0 -199.361 Td
-(2068 // Found one.) 122.318 Tj
-0 -208.854 Td
-(2069 kfree\(p->mem, p->sz\);) 157.267 Tj
-0 -218.347 Td
-(2070 kfree\(p->kstack, KSTACKSIZE\);) 192.215 Tj
-0 -227.841 Td
-(2071 pid = p->pid;) 122.318 Tj
+0 -180.3739 Td
+(2066 if\(p->parent == cp\){) 135.4239 Tj
+0 -189.8672 Td
+(2067 if\(p->state == ZOMBIE\){) 157.2665 Tj
+0 -199.3606 Td
+(2068 // Found one.) 122.3184 Tj
+0 -208.8539 Td
+(2069 kfree\(p->mem, p->sz\);) 157.2665 Tj
+0 -218.3473 Td
+(2070 kfree\(p->kstack, KSTACKSIZE\);) 192.2146 Tj
+0 -227.8407 Td
+(2071 pid = p->pid;) 122.3184 Tj
0 -237.334 Td
(2072 p->state = UNUSED;) 144.161 Tj
-0 -246.827 Td
-(2073 p->pid = 0;) 113.581 Tj
-0 -256.321 Td
-(2074 p->parent = 0;) 126.687 Tj
-0 -265.814 Td
-(2075 p->name[0] = 0;) 131.055 Tj
-0 -275.307 Td
-(2076 release\(&proc_table_lock\);) 179.109 Tj
-0 -284.801 Td
-(2077 return pid;) 113.581 Tj
-0 -294.294 Td
+0 -246.8274 Td
+(2073 p->pid = 0;) 113.5814 Tj
+0 -256.3207 Td
+(2074 p->parent = 0;) 126.6869 Tj
+0 -265.8141 Td
+(2075 p->name[0] = 0;) 131.0554 Tj
+0 -275.3075 Td
+(2076 release\(&proc_table_lock\);) 179.1091 Tj
+0 -284.8008 Td
+(2077 return pid;) 113.5814 Tj
+0 -294.2942 Td
(2078 }) 61.1592 Tj
-0 -303.788 Td
-(2079 havekids = 1;) 113.581 Tj
-0 -313.281 Td
+0 -303.7875 Td
+(2079 havekids = 1;) 113.5814 Tj
+0 -313.2809 Td
(2080 }) 52.4222 Tj
-0 -322.774 Td
+0 -322.7743 Td
(2081 }) 43.6851 Tj
-0 -332.268 Td
+0 -332.2676 Td
(2082 ) 21.8426 Tj
0 -341.761 Td
-(2083 // No point waiting if we don't have any children.) 257.742 Tj
-0 -351.254 Td
+(2083 // No point waiting if we don't have any children.) 257.7424 Tj
+0 -351.2543 Td
(2084 if\(!havekids || cp->killed\){) 161.635 Tj
-0 -360.748 Td
+0 -360.7477 Td
(2085 release\(&proc_table_lock\);) 161.635 Tj
-0 -370.241 Td
+0 -370.2411 Td
(2086 return -1;) 91.7388 Tj
-0 -379.734 Td
+0 -379.7344 Td
(2087 }) 43.6851 Tj
-0 -389.228 Td
+0 -389.2278 Td
(2088 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(2089 // Wait for children to exit. \(See wakeup1 call in p\
roc_exit.\)) 314.533 Tj
-0 -408.214 Td
+0 -408.2145 Td
(2090 sleep\(cp, &proc_table_lock\);) 161.635 Tj
-0 -417.708 Td
+0 -417.7079 Td
(2091 }) 34.9481 Tj
-0 -427.201 Td
+0 -427.2012 Td
(2092 }) 26.2111 Tj
-0 -436.695 Td
+0 -436.6946 Td
(2093 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(2094 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(2095 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(2096 ) 21.8426 Tj
0 -474.668 Td
(2097 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(2098 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(2099 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 20) 34.9481 Tj
Q
Q
@@ -9344,8 +9361,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -9360,16 +9376,16 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/proc.c Page 11) 166.004 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/proc.c Page 11) 166.0035 Tj
0 -28.4801 Td
-(2100 // Print a process listing to console. For debugging.) 257.742 Tj
+(2100 // Print a process listing to console. For debugging.) 257.7424 Tj
0 -37.9735 Td
-(2101 // Runs when user types ^P on console.) 187.846 Tj
+(2101 // Runs when user types ^P on console.) 187.8461 Tj
0 -47.4668 Td
-(2102 // No lock to avoid wedging a stuck machine further.) 249.005 Tj
+(2102 // No lock to avoid wedging a stuck machine further.) 249.0053 Tj
0 -56.9602 Td
(2103 void) 39.3166 Tj
0 -66.4535 Td
@@ -9377,95 +9393,95 @@ q
0 -75.9469 Td
(2105 {) 26.2111 Tj
0 -85.4403 Td
-(2106 static char *states[] = {) 139.792 Tj
+(2106 static char *states[] = {) 139.7925 Tj
0 -94.9336 Td
-(2107 [UNUSED] "unused",) 122.318 Tj
+(2107 [UNUSED] "unused",) 122.3184 Tj
0 -104.427 Td
-(2108 [EMBRYO] "embryo",) 122.318 Tj
-0 -113.92 Td
-(2109 [SLEEPING] "sleep ",) 122.318 Tj
-0 -123.414 Td
-(2110 [RUNNABLE] "runble",) 122.318 Tj
-0 -132.907 Td
-(2111 [RUNNING] "run ",) 122.318 Tj
-0 -142.4 Td
-(2112 [ZOMBIE] "zombie") 117.95 Tj
-0 -151.894 Td
+(2108 [EMBRYO] "embryo",) 122.3184 Tj
+0 -113.9203 Td
+(2109 [SLEEPING] "sleep ",) 122.3184 Tj
+0 -123.4137 Td
+(2110 [RUNNABLE] "runble",) 122.3184 Tj
+0 -132.9071 Td
+(2111 [RUNNING] "run ",) 122.3184 Tj
+0 -142.4004 Td
+(2112 [ZOMBIE] "zombie") 117.9499 Tj
+0 -151.8938 Td
(2113 };) 39.3166 Tj
-0 -161.387 Td
+0 -161.3871 Td
(2114 int i, j;) 69.8962 Tj
-0 -170.88 Td
+0 -170.8805 Td
(2115 struct proc *p;) 96.1073 Tj
-0 -180.374 Td
+0 -180.3739 Td
(2116 char *state;) 83.0018 Tj
-0 -189.867 Td
+0 -189.8672 Td
(2117 uint pc[10];) 83.0018 Tj
-0 -199.361 Td
+0 -199.3606 Td
(2118 ) 21.8426 Tj
-0 -208.854 Td
-(2119 for\(i = 0; i < NPROC; i++\){) 148.529 Tj
-0 -218.347 Td
+0 -208.8539 Td
+(2119 for\(i = 0; i < NPROC; i++\){) 148.5295 Tj
+0 -218.3473 Td
(2120 p = &proc[i];) 96.1073 Tj
-0 -227.841 Td
-(2121 if\(p->state == UNUSED\)) 135.424 Tj
+0 -227.8407 Td
+(2121 if\(p->state == UNUSED\)) 135.4239 Tj
0 -237.334 Td
(2122 continue;) 87.3703 Tj
-0 -246.827 Td
+0 -246.8274 Td
(2123 if\(p->state >= 0 && p->state < NELEM\(states\) && sta\
-tes[p->state]\)) 323.27 Tj
-0 -256.321 Td
-(2124 state = states[p->state];) 157.267 Tj
-0 -265.814 Td
+tes[p->state]\)) 323.2701 Tj
+0 -256.3207 Td
+(2124 state = states[p->state];) 157.2665 Tj
+0 -265.8141 Td
(2125 else) 56.7907 Tj
-0 -275.307 Td
-(2126 state = "???";) 109.213 Tj
-0 -284.801 Td
-(2127 cprintf\("%d %s %s", p->pid, state, p->name\);) 231.531 Tj
-0 -294.294 Td
-(2128 if\(p->state == SLEEPING\){) 148.529 Tj
-0 -303.788 Td
-(2129 getcallerpcs\(\(uint*\)p->context.ebp+2, pc\);) 231.531 Tj
-0 -313.281 Td
-(2130 for\(j=0; j<10 && pc[j] != 0; j++\)) 192.215 Tj
-0 -322.774 Td
+0 -275.3075 Td
+(2126 state = "???";) 109.2129 Tj
+0 -284.8008 Td
+(2127 cprintf\("%d %s %s", p->pid, state, p->name\);) 231.5313 Tj
+0 -294.2942 Td
+(2128 if\(p->state == SLEEPING\){) 148.5295 Tj
+0 -303.7875 Td
+(2129 getcallerpcs\(\(uint*\)p->context.ebp+2, pc\);) 231.5313 Tj
+0 -313.2809 Td
+(2130 for\(j=0; j<10 && pc[j] != 0; j++\)) 192.2146 Tj
+0 -322.7743 Td
(2131 cprintf\(" %p", pc[j]\);) 152.898 Tj
-0 -332.268 Td
+0 -332.2676 Td
(2132 }) 43.6851 Tj
0 -341.761 Td
-(2133 cprintf\("\\n"\);) 100.476 Tj
-0 -351.254 Td
+(2133 cprintf\("\\n"\);) 100.4758 Tj
+0 -351.2543 Td
(2134 }) 34.9481 Tj
-0 -360.748 Td
+0 -360.7477 Td
(2135 }) 26.2111 Tj
-0 -370.241 Td
+0 -370.2411 Td
(2136 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(2137 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(2138 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(2139 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(2140 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(2141 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(2142 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(2143 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(2144 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(2145 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(2146 ) 21.8426 Tj
0 -474.668 Td
(2147 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(2148 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(2149 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 21) 34.9481 Tj
Q
Q
@@ -9480,19 +9496,19 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/swtch.S Page 1) 166.004 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/swtch.S Page 1) 166.0035 Tj
0 -28.4801 Td
(2150 # void swtch\(struct context *old, struct context *new\)\
-;) 270.848 Tj
+;) 270.8479 Tj
0 -37.9735 Td
(2151 #) 26.2111 Tj
0 -47.4668 Td
-(2152 # Save current register context in old) 187.846 Tj
+(2152 # Save current register context in old) 187.8461 Tj
0 -56.9602 Td
-(2153 # and then load register context from new.) 205.32 Tj
+(2153 # and then load register context from new.) 205.3202 Tj
0 -66.4535 Td
(2154 ) 21.8426 Tj
0 -75.9469 Td
@@ -9500,93 +9516,93 @@ q
0 -85.4403 Td
(2156 swtch:) 48.0537 Tj
0 -94.9336 Td
-(2157 # Save old registers) 117.95 Tj
+(2157 # Save old registers) 117.9499 Tj
0 -104.427 Td
-(2158 movl 4\(%esp\), %eax) 109.213 Tj
-0 -113.92 Td
+(2158 movl 4\(%esp\), %eax) 109.2129 Tj
+0 -113.9203 Td
(2159 ) 21.8426 Tj
-0 -123.414 Td
-(2160 popl 0\(%eax\) # %eip) 117.95 Tj
-0 -132.907 Td
-(2161 movl %esp, 4\(%eax\)) 109.213 Tj
-0 -142.4 Td
-(2162 movl %ebx, 8\(%eax\)) 109.213 Tj
-0 -151.894 Td
-(2163 movl %ecx, 12\(%eax\)) 113.581 Tj
-0 -161.387 Td
-(2164 movl %edx, 16\(%eax\)) 113.581 Tj
-0 -170.88 Td
-(2165 movl %esi, 20\(%eax\)) 113.581 Tj
-0 -180.374 Td
-(2166 movl %edi, 24\(%eax\)) 113.581 Tj
-0 -189.867 Td
-(2167 movl %ebp, 28\(%eax\)) 113.581 Tj
-0 -199.361 Td
+0 -123.4137 Td
+(2160 popl 0\(%eax\) # %eip) 117.9499 Tj
+0 -132.9071 Td
+(2161 movl %esp, 4\(%eax\)) 109.2129 Tj
+0 -142.4004 Td
+(2162 movl %ebx, 8\(%eax\)) 109.2129 Tj
+0 -151.8938 Td
+(2163 movl %ecx, 12\(%eax\)) 113.5814 Tj
+0 -161.3871 Td
+(2164 movl %edx, 16\(%eax\)) 113.5814 Tj
+0 -170.8805 Td
+(2165 movl %esi, 20\(%eax\)) 113.5814 Tj
+0 -180.3739 Td
+(2166 movl %edi, 24\(%eax\)) 113.5814 Tj
+0 -189.8672 Td
+(2167 movl %ebp, 28\(%eax\)) 113.5814 Tj
+0 -199.3606 Td
(2168 ) 21.8426 Tj
-0 -208.854 Td
-(2169 # Load new registers) 117.95 Tj
-0 -218.347 Td
+0 -208.8539 Td
+(2169 # Load new registers) 117.9499 Tj
+0 -218.3473 Td
(2170 movl 4\(%esp\), %eax # not 8\(%esp\) - popped return ad\
dress above) 305.796 Tj
-0 -227.841 Td
+0 -227.8407 Td
(2171 ) 21.8426 Tj
0 -237.334 Td
-(2172 movl 28\(%eax\), %ebp) 113.581 Tj
-0 -246.827 Td
-(2173 movl 24\(%eax\), %edi) 113.581 Tj
-0 -256.321 Td
-(2174 movl 20\(%eax\), %esi) 113.581 Tj
-0 -265.814 Td
-(2175 movl 16\(%eax\), %edx) 113.581 Tj
-0 -275.307 Td
-(2176 movl 12\(%eax\), %ecx) 113.581 Tj
-0 -284.801 Td
-(2177 movl 8\(%eax\), %ebx) 109.213 Tj
-0 -294.294 Td
-(2178 movl 4\(%eax\), %esp) 109.213 Tj
-0 -303.788 Td
-(2179 pushl 0\(%eax\) # %eip) 122.318 Tj
-0 -313.281 Td
+(2172 movl 28\(%eax\), %ebp) 113.5814 Tj
+0 -246.8274 Td
+(2173 movl 24\(%eax\), %edi) 113.5814 Tj
+0 -256.3207 Td
+(2174 movl 20\(%eax\), %esi) 113.5814 Tj
+0 -265.8141 Td
+(2175 movl 16\(%eax\), %edx) 113.5814 Tj
+0 -275.3075 Td
+(2176 movl 12\(%eax\), %ecx) 113.5814 Tj
+0 -284.8008 Td
+(2177 movl 8\(%eax\), %ebx) 109.2129 Tj
+0 -294.2942 Td
+(2178 movl 4\(%eax\), %esp) 109.2129 Tj
+0 -303.7875 Td
+(2179 pushl 0\(%eax\) # %eip) 122.3184 Tj
+0 -313.2809 Td
(2180 ) 21.8426 Tj
-0 -322.774 Td
+0 -322.7743 Td
(2181 ret) 43.6851 Tj
-0 -332.268 Td
+0 -332.2676 Td
(2182 ) 21.8426 Tj
0 -341.761 Td
(2183 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(2184 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(2185 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(2186 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(2187 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(2188 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(2189 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(2190 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(2191 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(2192 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(2193 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(2194 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(2195 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(2196 ) 21.8426 Tj
0 -474.668 Td
(2197 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(2198 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(2199 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 21) 34.9481 Tj
Q
Q
@@ -9615,8 +9631,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -9631,116 +9646,116 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/kalloc.c Page 1) 170.372 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/kalloc.c Page 1) 170.3721 Tj
0 -28.4801 Td
-(2200 // Physical memory allocator, intended to allocate) 240.268 Tj
+(2200 // Physical memory allocator, intended to allocate) 240.2683 Tj
0 -37.9735 Td
(2201 // memory for user processes. Allocates in 4096-byte "page\
s".) 288.322 Tj
0 -47.4668 Td
(2202 // Free list is kept sorted and combines adjacent pages in\
-to) 283.953 Tj
+to) 283.9534 Tj
0 -56.9602 Td
-(2203 // long runs, to make it easier to allocate big segments.) 270.848 Tj
+(2203 // long runs, to make it easier to allocate big segments.) 270.8479 Tj
0 -66.4535 Td
(2204 // One reason the page size is 4k is that the x86 segment \
-size) 292.69 Tj
+size) 292.6905 Tj
0 -75.9469 Td
-(2205 // granularity is 4k.) 113.581 Tj
+(2205 // granularity is 4k.) 113.5814 Tj
0 -85.4403 Td
(2206 ) 21.8426 Tj
0 -94.9336 Td
-(2207 #include "types.h") 100.476 Tj
+(2207 #include "types.h") 100.4758 Tj
0 -104.427 Td
(2208 #include "defs.h") 96.1073 Tj
-0 -113.92 Td
-(2209 #include "param.h") 100.476 Tj
-0 -123.414 Td
-(2210 #include "spinlock.h") 113.581 Tj
-0 -132.907 Td
+0 -113.9203 Td
+(2209 #include "param.h") 100.4758 Tj
+0 -123.4137 Td
+(2210 #include "spinlock.h") 113.5814 Tj
+0 -132.9071 Td
(2211 ) 21.8426 Tj
-0 -142.4 Td
+0 -142.4004 Td
(2212 struct spinlock kalloc_lock;) 144.161 Tj
-0 -151.894 Td
+0 -151.8938 Td
(2213 ) 21.8426 Tj
-0 -161.387 Td
+0 -161.3871 Td
(2214 struct run {) 74.2647 Tj
-0 -170.88 Td
-(2215 struct run *next;) 104.844 Tj
-0 -180.374 Td
-(2216 int len; // bytes) 104.844 Tj
-0 -189.867 Td
+0 -170.8805 Td
+(2215 struct run *next;) 104.8443 Tj
+0 -180.3739 Td
+(2216 int len; // bytes) 104.8443 Tj
+0 -189.8672 Td
(2217 };) 30.5796 Tj
-0 -199.361 Td
-(2218 struct run *freelist;) 113.581 Tj
-0 -208.854 Td
+0 -199.3606 Td
+(2218 struct run *freelist;) 113.5814 Tj
+0 -208.8539 Td
(2219 ) 21.8426 Tj
-0 -218.347 Td
-(2220 // Initialize free list of physical pages.) 205.32 Tj
-0 -227.841 Td
-(2221 // This code cheats by just considering one megabyte of) 262.111 Tj
+0 -218.3473 Td
+(2220 // Initialize free list of physical pages.) 205.3202 Tj
+0 -227.8407 Td
+(2221 // This code cheats by just considering one megabyte of) 262.1109 Tj
0 -237.334 Td
-(2222 // pages after _end. Real systems would determine the) 257.742 Tj
-0 -246.827 Td
+(2222 // pages after _end. Real systems would determine the) 257.7424 Tj
+0 -246.8274 Td
(2223 // amount of memory available in the system and use it all\
-.) 279.585 Tj
-0 -256.321 Td
+.) 279.5849 Tj
+0 -256.3207 Td
(2224 void) 39.3166 Tj
-0 -265.814 Td
+0 -265.8141 Td
(2225 kinit\(void\)) 69.8962 Tj
-0 -275.307 Td
+0 -275.3075 Td
(2226 {) 26.2111 Tj
-0 -284.801 Td
+0 -284.8008 Td
(2227 extern int end;) 96.1073 Tj
-0 -294.294 Td
+0 -294.2942 Td
(2228 uint mem;) 69.8962 Tj
-0 -303.788 Td
+0 -303.7875 Td
(2229 char *start;) 83.0018 Tj
-0 -313.281 Td
+0 -313.2809 Td
(2230 ) 21.8426 Tj
-0 -322.774 Td
-(2231 initlock\(&kalloc_lock, "kalloc"\);) 174.741 Tj
-0 -332.268 Td
-(2232 start = \(char*\) &end;) 122.318 Tj
+0 -322.7743 Td
+(2231 initlock\(&kalloc_lock, "kalloc"\);) 174.7406 Tj
+0 -332.2676 Td
+(2232 start = \(char*\) &end;) 122.3184 Tj
0 -341.761 Td
(2233 start = \(char*\) \(\(\(uint\)start + PAGE\) & ~\(PAGE-1\
-\)\);) 253.374 Tj
-0 -351.254 Td
-(2234 mem = 256; // assume computer has 256 pages of RAM) 249.005 Tj
-0 -360.748 Td
-(2235 cprintf\("mem = %d\\n", mem * PAGE\);) 179.109 Tj
-0 -370.241 Td
-(2236 kfree\(start, mem * PAGE\);) 139.792 Tj
-0 -379.734 Td
+\)\);) 253.3738 Tj
+0 -351.2543 Td
+(2234 mem = 256; // assume computer has 256 pages of RAM) 249.0053 Tj
+0 -360.7477 Td
+(2235 cprintf\("mem = %d\\n", mem * PAGE\);) 179.1091 Tj
+0 -370.2411 Td
+(2236 kfree\(start, mem * PAGE\);) 139.7925 Tj
+0 -379.7344 Td
(2237 }) 26.2111 Tj
-0 -389.228 Td
+0 -389.2278 Td
(2238 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(2239 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(2240 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(2241 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(2242 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(2243 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(2244 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(2245 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(2246 ) 21.8426 Tj
0 -474.668 Td
(2247 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(2248 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(2249 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 22) 34.9481 Tj
Q
Q
@@ -9755,113 +9770,113 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/kalloc.c Page 2) 170.372 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/kalloc.c Page 2) 170.3721 Tj
0 -28.4801 Td
-(2250 // Free the len bytes of memory pointed at by v,) 231.531 Tj
+(2250 // Free the len bytes of memory pointed at by v,) 231.5313 Tj
0 -37.9735 Td
-(2251 // which normally should have been returned by a) 231.531 Tj
+(2251 // which normally should have been returned by a) 231.5313 Tj
0 -47.4668 Td
-(2252 // call to kalloc\(len\). \(The exception is when) 227.163 Tj
+(2252 // call to kalloc\(len\). \(The exception is when) 227.1628 Tj
0 -56.9602 Td
-(2253 // initializing the allocator; see kinit above.\)) 231.531 Tj
+(2253 // initializing the allocator; see kinit above.\)) 231.5313 Tj
0 -66.4535 Td
(2254 void) 39.3166 Tj
0 -75.9469 Td
-(2255 kfree\(char *v, int len\)) 122.318 Tj
+(2255 kfree\(char *v, int len\)) 122.3184 Tj
0 -85.4403 Td
(2256 {) 26.2111 Tj
0 -94.9336 Td
-(2257 struct run *r, *rend, **rp, *p, *pend;) 196.583 Tj
+(2257 struct run *r, *rend, **rp, *p, *pend;) 196.5831 Tj
0 -104.427 Td
(2258 ) 21.8426 Tj
-0 -113.92 Td
+0 -113.9203 Td
(2259 if\(len <= 0 || len % PAGE\)) 144.161 Tj
-0 -123.414 Td
-(2260 panic\("kfree"\);) 104.844 Tj
-0 -132.907 Td
+0 -123.4137 Td
+(2260 panic\("kfree"\);) 104.8443 Tj
+0 -132.9071 Td
(2261 ) 21.8426 Tj
-0 -142.4 Td
-(2262 // Fill with junk to catch dangling refs.) 209.689 Tj
-0 -151.894 Td
-(2263 memset\(v, 1, len\);) 109.213 Tj
-0 -161.387 Td
+0 -142.4004 Td
+(2262 // Fill with junk to catch dangling refs.) 209.6887 Tj
+0 -151.8938 Td
+(2263 memset\(v, 1, len\);) 109.2129 Tj
+0 -161.3871 Td
(2264 ) 21.8426 Tj
-0 -170.88 Td
-(2265 acquire\(&kalloc_lock\);) 126.687 Tj
-0 -180.374 Td
-(2266 p = \(struct run*\)v;) 113.581 Tj
-0 -189.867 Td
+0 -170.8805 Td
+(2265 acquire\(&kalloc_lock\);) 126.6869 Tj
+0 -180.3739 Td
+(2266 p = \(struct run*\)v;) 113.5814 Tj
+0 -189.8672 Td
(2267 pend = \(struct run*\)\(v + len\);) 161.635 Tj
-0 -199.361 Td
+0 -199.3606 Td
(2268 for\(rp=&freelist; \(r=*rp\) != 0 && r <= pend; rp=&r->n\
-ext\){) 283.953 Tj
-0 -208.854 Td
-(2269 rend = \(struct run*\)\(\(char*\)r + r->len\);) 214.057 Tj
-0 -218.347 Td
-(2270 if\(r <= p && p < rend\)) 135.424 Tj
-0 -227.841 Td
-(2271 panic\("freeing free page"\);) 166.004 Tj
+ext\){) 283.9534 Tj
+0 -208.8539 Td
+(2269 rend = \(struct run*\)\(\(char*\)r + r->len\);) 214.0572 Tj
+0 -218.3473 Td
+(2270 if\(r <= p && p < rend\)) 135.4239 Tj
+0 -227.8407 Td
+(2271 panic\("freeing free page"\);) 166.0035 Tj
0 -237.334 Td
-(2272 if\(pend == r\){ // p next to r: replace r with p) 249.005 Tj
-0 -246.827 Td
+(2272 if\(pend == r\){ // p next to r: replace r with p) 249.0053 Tj
+0 -246.8274 Td
(2273 p->len = len + r->len;) 144.161 Tj
-0 -256.321 Td
-(2274 p->next = r->next;) 126.687 Tj
-0 -265.814 Td
+0 -256.3207 Td
+(2274 p->next = r->next;) 126.6869 Tj
+0 -265.8141 Td
(2275 *rp = p;) 83.0018 Tj
-0 -275.307 Td
+0 -275.3075 Td
(2276 goto out;) 87.3703 Tj
-0 -284.801 Td
+0 -284.8008 Td
(2277 }) 43.6851 Tj
-0 -294.294 Td
-(2278 if\(rend == p\){ // r next to p: replace p with r) 249.005 Tj
-0 -303.788 Td
-(2279 r->len += len;) 109.213 Tj
-0 -313.281 Td
+0 -294.2942 Td
+(2278 if\(rend == p\){ // r next to p: replace p with r) 249.0053 Tj
+0 -303.7875 Td
+(2279 r->len += len;) 109.2129 Tj
+0 -313.2809 Td
(2280 if\(r->next && r->next == pend\){ // r now next to \
-r->next?) 301.427 Tj
-0 -322.774 Td
-(2281 r->len += r->next->len;) 157.267 Tj
-0 -332.268 Td
+r->next?) 301.4275 Tj
+0 -322.7743 Td
+(2281 r->len += r->next->len;) 157.2665 Tj
+0 -332.2676 Td
(2282 r->next = r->next->next;) 161.635 Tj
0 -341.761 Td
(2283 }) 52.4222 Tj
-0 -351.254 Td
+0 -351.2543 Td
(2284 goto out;) 87.3703 Tj
-0 -360.748 Td
+0 -360.7477 Td
(2285 }) 43.6851 Tj
-0 -370.241 Td
+0 -370.2411 Td
(2286 }) 34.9481 Tj
-0 -379.734 Td
-(2287 // Insert p before r in list.) 157.267 Tj
-0 -389.228 Td
+0 -379.7344 Td
+(2287 // Insert p before r in list.) 157.2665 Tj
+0 -389.2278 Td
(2288 p->len = len;) 87.3703 Tj
-0 -398.721 Td
+0 -398.7211 Td
(2289 p->next = r;) 83.0018 Tj
-0 -408.214 Td
+0 -408.2145 Td
(2290 *rp = p;) 65.5277 Tj
-0 -417.708 Td
+0 -417.7079 Td
(2291 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(2292 out:) 43.6851 Tj
-0 -436.695 Td
-(2293 release\(&kalloc_lock\);) 126.687 Tj
-0 -446.188 Td
+0 -436.6946 Td
+(2293 release\(&kalloc_lock\);) 126.6869 Tj
+0 -446.1879 Td
(2294 }) 26.2111 Tj
-0 -455.681 Td
+0 -455.6813 Td
(2295 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(2296 ) 21.8426 Tj
0 -474.668 Td
(2297 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(2298 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(2299 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 22) 34.9481 Tj
Q
Q
@@ -9890,8 +9905,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -9906,16 +9920,16 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/kalloc.c Page 3) 170.372 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/kalloc.c Page 3) 170.3721 Tj
0 -28.4801 Td
-(2300 // Allocate n bytes of physical memory.) 192.215 Tj
+(2300 // Allocate n bytes of physical memory.) 192.2146 Tj
0 -37.9735 Td
-(2301 // Returns a kernel-segment pointer.) 179.109 Tj
+(2301 // Returns a kernel-segment pointer.) 179.1091 Tj
0 -47.4668 Td
-(2302 // Returns 0 if the memory cannot be allocated.) 227.163 Tj
+(2302 // Returns 0 if the memory cannot be allocated.) 227.1628 Tj
0 -56.9602 Td
(2303 char*) 43.6851 Tj
0 -66.4535 Td
@@ -9925,92 +9939,92 @@ q
0 -85.4403 Td
(2306 char *p;) 65.5277 Tj
0 -94.9336 Td
-(2307 struct run *r, **rp;) 117.95 Tj
+(2307 struct run *r, **rp;) 117.9499 Tj
0 -104.427 Td
(2308 ) 21.8426 Tj
-0 -113.92 Td
-(2309 if\(n % PAGE || n <= 0\)) 126.687 Tj
-0 -123.414 Td
-(2310 panic\("kalloc"\);) 109.213 Tj
-0 -132.907 Td
+0 -113.9203 Td
+(2309 if\(n % PAGE || n <= 0\)) 126.6869 Tj
+0 -123.4137 Td
+(2310 panic\("kalloc"\);) 109.2129 Tj
+0 -132.9071 Td
(2311 ) 21.8426 Tj
-0 -142.4 Td
-(2312 acquire\(&kalloc_lock\);) 126.687 Tj
-0 -151.894 Td
-(2313 for\(rp=&freelist; \(r=*rp\) != 0; rp=&r->next\){) 227.163 Tj
-0 -161.387 Td
-(2314 if\(r->len == n\){) 109.213 Tj
-0 -170.88 Td
-(2315 *rp = r->next;) 109.213 Tj
-0 -180.374 Td
+0 -142.4004 Td
+(2312 acquire\(&kalloc_lock\);) 126.6869 Tj
+0 -151.8938 Td
+(2313 for\(rp=&freelist; \(r=*rp\) != 0; rp=&r->next\){) 227.1628 Tj
+0 -161.3871 Td
+(2314 if\(r->len == n\){) 109.2129 Tj
+0 -170.8805 Td
+(2315 *rp = r->next;) 109.2129 Tj
+0 -180.3739 Td
(2316 release\(&kalloc_lock\);) 144.161 Tj
-0 -189.867 Td
-(2317 return \(char*\)r;) 117.95 Tj
-0 -199.361 Td
+0 -189.8672 Td
+(2317 return \(char*\)r;) 117.9499 Tj
+0 -199.3606 Td
(2318 }) 43.6851 Tj
-0 -208.854 Td
-(2319 if\(r->len > n\){) 104.844 Tj
-0 -218.347 Td
-(2320 r->len -= n;) 100.476 Tj
-0 -227.841 Td
+0 -208.8539 Td
+(2319 if\(r->len > n\){) 104.8443 Tj
+0 -218.3473 Td
+(2320 r->len -= n;) 100.4758 Tj
+0 -227.8407 Td
(2321 p = \(char*\)r + r->len;) 144.161 Tj
0 -237.334 Td
(2322 release\(&kalloc_lock\);) 144.161 Tj
-0 -246.827 Td
+0 -246.8274 Td
(2323 return p;) 87.3703 Tj
-0 -256.321 Td
+0 -256.3207 Td
(2324 }) 43.6851 Tj
-0 -265.814 Td
+0 -265.8141 Td
(2325 }) 34.9481 Tj
-0 -275.307 Td
-(2326 release\(&kalloc_lock\);) 126.687 Tj
-0 -284.801 Td
+0 -275.3075 Td
+(2326 release\(&kalloc_lock\);) 126.6869 Tj
+0 -284.8008 Td
(2327 ) 21.8426 Tj
-0 -294.294 Td
-(2328 cprintf\("kalloc: out of memory\\n"\);) 183.478 Tj
-0 -303.788 Td
+0 -294.2942 Td
+(2328 cprintf\("kalloc: out of memory\\n"\);) 183.4776 Tj
+0 -303.7875 Td
(2329 return 0;) 69.8962 Tj
-0 -313.281 Td
+0 -313.2809 Td
(2330 }) 26.2111 Tj
-0 -322.774 Td
+0 -322.7743 Td
(2331 ) 21.8426 Tj
-0 -332.268 Td
+0 -332.2676 Td
(2332 ) 21.8426 Tj
0 -341.761 Td
(2333 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(2334 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(2335 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(2336 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(2337 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(2338 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(2339 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(2340 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(2341 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(2342 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(2343 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(2344 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(2345 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(2346 ) 21.8426 Tj
0 -474.668 Td
(2347 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(2348 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(2349 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 23) 34.9481 Tj
Q
Q
@@ -10025,117 +10039,117 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/traps.h Page 1) 166.004 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/traps.h Page 1) 166.0035 Tj
0 -28.4801 Td
-(2350 // x86 trap and interrupt constants.) 179.109 Tj
+(2350 // x86 trap and interrupt constants.) 179.1091 Tj
0 -37.9735 Td
(2351 ) 21.8426 Tj
0 -47.4668 Td
-(2352 // Processor-defined:) 113.581 Tj
+(2352 // Processor-defined:) 113.5814 Tj
0 -56.9602 Td
-(2353 #define T_DIVIDE 0 // divide error) 227.163 Tj
+(2353 #define T_DIVIDE 0 // divide error) 227.1628 Tj
0 -66.4535 Td
-(2354 #define T_DEBUG 1 // debug exception) 240.268 Tj
+(2354 #define T_DEBUG 1 // debug exception) 240.2683 Tj
0 -75.9469 Td
-(2355 #define T_NMI 2 // non-maskable interrupt) 270.848 Tj
+(2355 #define T_NMI 2 // non-maskable interrupt) 270.8479 Tj
0 -85.4403 Td
-(2356 #define T_BRKPT 3 // breakpoint) 218.426 Tj
+(2356 #define T_BRKPT 3 // breakpoint) 218.4257 Tj
0 -94.9336 Td
-(2357 #define T_OFLOW 4 // overflow) 209.689 Tj
+(2357 #define T_OFLOW 4 // overflow) 209.6887 Tj
0 -104.427 Td
-(2358 #define T_BOUND 5 // bounds check) 227.163 Tj
-0 -113.92 Td
-(2359 #define T_ILLOP 6 // illegal opcode) 235.9 Tj
-0 -123.414 Td
-(2360 #define T_DEVICE 7 // device not available) 262.111 Tj
-0 -132.907 Td
-(2361 #define T_DBLFLT 8 // double fault) 227.163 Tj
-0 -142.4 Td
+(2358 #define T_BOUND 5 // bounds check) 227.1628 Tj
+0 -113.9203 Td
+(2359 #define T_ILLOP 6 // illegal opcode) 235.8998 Tj
+0 -123.4137 Td
+(2360 #define T_DEVICE 7 // device not available) 262.1109 Tj
+0 -132.9071 Td
+(2361 #define T_DBLFLT 8 // double fault) 227.1628 Tj
+0 -142.4004 Td
(2362 // #define T_COPROC 9 // reserved \(not used sin\
-ce 486\)) 301.427 Tj
-0 -151.894 Td
+ce 486\)) 301.4275 Tj
+0 -151.8938 Td
(2363 #define T_TSS 10 // invalid task switch seg\
-ment) 292.69 Tj
-0 -161.387 Td
-(2364 #define T_SEGNP 11 // segment not present) 257.742 Tj
-0 -170.88 Td
-(2365 #define T_STACK 12 // stack exception) 240.268 Tj
-0 -180.374 Td
+ment) 292.6905 Tj
+0 -161.3871 Td
+(2364 #define T_SEGNP 11 // segment not present) 257.7424 Tj
+0 -170.8805 Td
+(2365 #define T_STACK 12 // stack exception) 240.2683 Tj
+0 -180.3739 Td
(2366 #define T_GPFLT 13 // general protection faul\
-t) 279.585 Tj
-0 -189.867 Td
-(2367 #define T_PGFLT 14 // page fault) 218.426 Tj
-0 -199.361 Td
-(2368 // #define T_RES 15 // reserved) 209.689 Tj
-0 -208.854 Td
-(2369 #define T_FPERR 16 // floating point error) 262.111 Tj
-0 -218.347 Td
-(2370 #define T_ALIGN 17 // aligment check) 235.9 Tj
-0 -227.841 Td
-(2371 #define T_MCHK 18 // machine check) 231.531 Tj
+t) 279.5849 Tj
+0 -189.8672 Td
+(2367 #define T_PGFLT 14 // page fault) 218.4257 Tj
+0 -199.3606 Td
+(2368 // #define T_RES 15 // reserved) 209.6887 Tj
+0 -208.8539 Td
+(2369 #define T_FPERR 16 // floating point error) 262.1109 Tj
+0 -218.3473 Td
+(2370 #define T_ALIGN 17 // aligment check) 235.8998 Tj
+0 -227.8407 Td
+(2371 #define T_MCHK 18 // machine check) 231.5313 Tj
0 -237.334 Td
(2372 #define T_SIMDERR 19 // SIMD floating point err\
-or) 283.953 Tj
-0 -246.827 Td
+or) 283.9534 Tj
+0 -246.8274 Td
(2373 ) 21.8426 Tj
-0 -256.321 Td
+0 -256.3207 Td
(2374 // These are arbitrarily chosen, but with care not to over\
lap) 288.322 Tj
-0 -265.814 Td
-(2375 // processor defined exceptions or interrupt vectors.) 253.374 Tj
-0 -275.307 Td
-(2376 #define T_SYSCALL 48 // system call) 222.794 Tj
-0 -284.801 Td
-(2377 #define T_DEFAULT 500 // catchall) 209.689 Tj
-0 -294.294 Td
+0 -265.8141 Td
+(2375 // processor defined exceptions or interrupt vectors.) 253.3738 Tj
+0 -275.3075 Td
+(2376 #define T_SYSCALL 48 // system call) 222.7942 Tj
+0 -284.8008 Td
+(2377 #define T_DEFAULT 500 // catchall) 209.6887 Tj
+0 -294.2942 Td
(2378 ) 21.8426 Tj
-0 -303.788 Td
+0 -303.7875 Td
(2379 #define IRQ_OFFSET 32 // IRQ 0 corresponds to in\
-t IRQ_OFFSET) 327.639 Tj
-0 -313.281 Td
+t IRQ_OFFSET) 327.6386 Tj
+0 -313.2809 Td
(2380 ) 21.8426 Tj
-0 -322.774 Td
-(2381 #define IRQ_TIMER 0) 135.424 Tj
-0 -332.268 Td
-(2382 #define IRQ_KBD 1) 135.424 Tj
+0 -322.7743 Td
+(2381 #define IRQ_TIMER 0) 135.4239 Tj
+0 -332.2676 Td
+(2382 #define IRQ_KBD 1) 135.4239 Tj
0 -341.761 Td
-(2383 #define IRQ_IDE 14) 135.424 Tj
-0 -351.254 Td
-(2384 #define IRQ_ERROR 19) 135.424 Tj
-0 -360.748 Td
-(2385 #define IRQ_SPURIOUS 31) 135.424 Tj
-0 -370.241 Td
+(2383 #define IRQ_IDE 14) 135.4239 Tj
+0 -351.2543 Td
+(2384 #define IRQ_ERROR 19) 135.4239 Tj
+0 -360.7477 Td
+(2385 #define IRQ_SPURIOUS 31) 135.4239 Tj
+0 -370.2411 Td
(2386 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(2387 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(2388 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(2389 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(2390 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(2391 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(2392 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(2393 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(2394 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(2395 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(2396 ) 21.8426 Tj
0 -474.668 Td
(2397 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(2398 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(2399 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 23) 34.9481 Tj
Q
Q
@@ -10164,8 +10178,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -10180,111 +10193,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/vectors.pl Page 1) 179.109 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/vectors.pl Page 1) 179.1091 Tj
0 -28.4801 Td
-(2400 #!/usr/bin/perl -w) 100.476 Tj
+(2400 #!/usr/bin/perl -w) 100.4758 Tj
0 -37.9735 Td
(2401 ) 21.8426 Tj
0 -47.4668 Td
-(2402 # Generate vectors.S, the trap/interrupt entry points.) 257.742 Tj
+(2402 # Generate vectors.S, the trap/interrupt entry points.) 257.7424 Tj
0 -56.9602 Td
-(2403 # There has to be one entry point per interrupt number) 257.742 Tj
+(2403 # There has to be one entry point per interrupt number) 257.7424 Tj
0 -66.4535 Td
-(2404 # since otherwise there's no way for trap\(\) to discover) 262.111 Tj
+(2404 # since otherwise there's no way for trap\(\) to discover) 262.1109 Tj
0 -75.9469 Td
-(2405 # the interrupt number.) 122.318 Tj
+(2405 # the interrupt number.) 122.3184 Tj
0 -85.4403 Td
(2406 ) 21.8426 Tj
0 -94.9336 Td
-(2407 print "# generated by vectors.pl - do not edit\\n";) 240.268 Tj
+(2407 print "# generated by vectors.pl - do not edit\\n";) 240.2683 Tj
0 -104.427 Td
-(2408 print "# handlers\\n";) 113.581 Tj
-0 -113.92 Td
+(2408 print "# handlers\\n";) 113.5814 Tj
+0 -113.9203 Td
(2409 print ".text\\n";) 91.7388 Tj
-0 -123.414 Td
-(2410 print ".globl alltraps\\n";) 135.424 Tj
-0 -132.907 Td
-(2411 for\(my $i = 0; $i < 256; $i++\){) 157.267 Tj
-0 -142.4 Td
+0 -123.4137 Td
+(2410 print ".globl alltraps\\n";) 135.4239 Tj
+0 -132.9071 Td
+(2411 for\(my $i = 0; $i < 256; $i++\){) 157.2665 Tj
+0 -142.4004 Td
(2412 print ".globl vector$i\\n";) 152.898 Tj
-0 -151.894 Td
-(2413 print "vector$i:\\n";) 126.687 Tj
-0 -161.387 Td
-(2414 if\(\($i < 8 || $i > 14\) && $i != 17\){) 196.583 Tj
-0 -170.88 Td
+0 -151.8938 Td
+(2413 print "vector$i:\\n";) 126.6869 Tj
+0 -161.3871 Td
+(2414 if\(\($i < 8 || $i > 14\) && $i != 17\){) 196.5831 Tj
+0 -170.8805 Td
(2415 print " pushl \\$0\\n";) 152.898 Tj
-0 -180.374 Td
+0 -180.3739 Td
(2416 }) 43.6851 Tj
-0 -189.867 Td
-(2417 print " pushl \\$$i\\n";) 139.792 Tj
-0 -199.361 Td
-(2418 print " jmp alltraps\\n";) 148.529 Tj
-0 -208.854 Td
+0 -189.8672 Td
+(2417 print " pushl \\$$i\\n";) 139.7925 Tj
+0 -199.3606 Td
+(2418 print " jmp alltraps\\n";) 148.5295 Tj
+0 -208.8539 Td
(2419 }) 26.2111 Tj
-0 -218.347 Td
+0 -218.3473 Td
(2420 ) 21.8426 Tj
-0 -227.841 Td
-(2421 print "\\n# vector table\\n";) 139.792 Tj
+0 -227.8407 Td
+(2421 print "\\n# vector table\\n";) 139.7925 Tj
0 -237.334 Td
(2422 print ".data\\n";) 91.7388 Tj
-0 -246.827 Td
-(2423 print ".globl vectors\\n";) 131.055 Tj
-0 -256.321 Td
-(2424 print "vectors:\\n";) 104.844 Tj
-0 -265.814 Td
-(2425 for\(my $i = 0; $i < 256; $i++\){) 157.267 Tj
-0 -275.307 Td
-(2426 print " .long vector$i\\n";) 157.267 Tj
-0 -284.801 Td
+0 -246.8274 Td
+(2423 print ".globl vectors\\n";) 131.0554 Tj
+0 -256.3207 Td
+(2424 print "vectors:\\n";) 104.8443 Tj
+0 -265.8141 Td
+(2425 for\(my $i = 0; $i < 256; $i++\){) 157.2665 Tj
+0 -275.3075 Td
+(2426 print " .long vector$i\\n";) 157.2665 Tj
+0 -284.8008 Td
(2427 }) 26.2111 Tj
-0 -294.294 Td
+0 -294.2942 Td
(2428 ) 21.8426 Tj
-0 -303.788 Td
+0 -303.7875 Td
(2429 # sample output:) 91.7388 Tj
-0 -313.281 Td
+0 -313.2809 Td
(2430 # # handlers) 83.0018 Tj
-0 -322.774 Td
+0 -322.7743 Td
(2431 # .text) 61.1592 Tj
-0 -332.268 Td
-(2432 # .globl alltraps) 104.844 Tj
+0 -332.2676 Td
+(2432 # .globl alltraps) 104.8443 Tj
0 -341.761 Td
-(2433 # .globl vector0) 100.476 Tj
-0 -351.254 Td
+(2433 # .globl vector0) 100.4758 Tj
+0 -351.2543 Td
(2434 # vector0:) 74.2647 Tj
-0 -360.748 Td
+0 -360.7477 Td
(2435 # pushl $0) 83.0018 Tj
-0 -370.241 Td
+0 -370.2411 Td
(2436 # pushl $0) 83.0018 Tj
-0 -379.734 Td
-(2437 # jmp alltraps) 100.476 Tj
-0 -389.228 Td
+0 -379.7344 Td
+(2437 # jmp alltraps) 100.4758 Tj
+0 -389.2278 Td
(2438 # ...) 52.4222 Tj
-0 -398.721 Td
+0 -398.7211 Td
(2439 #) 26.2111 Tj
-0 -408.214 Td
-(2440 # # vector table) 100.476 Tj
-0 -417.708 Td
+0 -408.2145 Td
+(2440 # # vector table) 100.4758 Tj
+0 -417.7079 Td
(2441 # .data) 61.1592 Tj
-0 -427.201 Td
-(2442 # .globl vectors) 100.476 Tj
-0 -436.695 Td
+0 -427.2012 Td
+(2442 # .globl vectors) 100.4758 Tj
+0 -436.6946 Td
(2443 # vectors:) 74.2647 Tj
-0 -446.188 Td
-(2444 # .long vector0) 104.844 Tj
-0 -455.681 Td
-(2445 # .long vector1) 104.844 Tj
-0 -465.175 Td
-(2446 # .long vector2) 104.844 Tj
+0 -446.1879 Td
+(2444 # .long vector0) 104.8443 Tj
+0 -455.6813 Td
+(2445 # .long vector1) 104.8443 Tj
+0 -465.1747 Td
+(2446 # .long vector2) 104.8443 Tj
0 -474.668 Td
(2447 # ...) 52.4222 Tj
-0 -484.161 Td
+0 -484.1614 Td
(2448 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(2449 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 24) 34.9481 Tj
Q
Q
@@ -10299,111 +10312,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/trapasm.S Page 1) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/trapasm.S Page 1) 174.7406 Tj
0 -28.4801 Td
(2450 .text) 43.6851 Tj
0 -37.9735 Td
(2451 ) 21.8426 Tj
0 -47.4668 Td
-(2452 .set SEG_KDATA_SEL, 0x10 # selector for SEG_KDATA) 244.637 Tj
+(2452 .set SEG_KDATA_SEL, 0x10 # selector for SEG_KDATA) 244.6368 Tj
0 -56.9602 Td
(2453 ) 21.8426 Tj
0 -66.4535 Td
-(2454 # vectors.S sends all traps here.) 174.741 Tj
+(2454 # vectors.S sends all traps here.) 174.7406 Tj
0 -75.9469 Td
(2455 .globl alltraps) 87.3703 Tj
0 -85.4403 Td
(2456 alltraps:) 61.1592 Tj
0 -94.9336 Td
-(2457 # Build trap frame.) 113.581 Tj
+(2457 # Build trap frame.) 113.5814 Tj
0 -104.427 Td
(2458 pushl %ds) 69.8962 Tj
-0 -113.92 Td
+0 -113.9203 Td
(2459 pushl %es) 69.8962 Tj
-0 -123.414 Td
+0 -123.4137 Td
(2460 pushal) 56.7907 Tj
-0 -132.907 Td
+0 -132.9071 Td
(2461 ) 21.8426 Tj
-0 -142.4 Td
-(2462 # Set up data segments.) 131.055 Tj
-0 -151.894 Td
-(2463 movl $SEG_KDATA_SEL, %eax) 139.792 Tj
-0 -161.387 Td
+0 -142.4004 Td
+(2462 # Set up data segments.) 131.0554 Tj
+0 -151.8938 Td
+(2463 movl $SEG_KDATA_SEL, %eax) 139.7925 Tj
+0 -161.3871 Td
(2464 movw %ax,%ds) 83.0018 Tj
-0 -170.88 Td
+0 -170.8805 Td
(2465 movw %ax,%es) 83.0018 Tj
-0 -180.374 Td
+0 -180.3739 Td
(2466 ) 21.8426 Tj
-0 -189.867 Td
+0 -189.8672 Td
(2467 # Call trap\(tf\), where tf=%esp) 161.635 Tj
-0 -199.361 Td
+0 -199.3606 Td
(2468 pushl %esp) 74.2647 Tj
-0 -208.854 Td
+0 -208.8539 Td
(2469 call trap) 69.8962 Tj
-0 -218.347 Td
+0 -218.3473 Td
(2470 addl $4, %esp) 87.3703 Tj
-0 -227.841 Td
+0 -227.8407 Td
(2471 ) 21.8426 Tj
0 -237.334 Td
-(2472 # Return falls through to trapret...) 187.846 Tj
-0 -246.827 Td
+(2472 # Return falls through to trapret...) 187.8461 Tj
+0 -246.8274 Td
(2473 .globl trapret) 83.0018 Tj
-0 -256.321 Td
+0 -256.3207 Td
(2474 trapret:) 56.7907 Tj
-0 -265.814 Td
+0 -265.8141 Td
(2475 popal) 52.4222 Tj
-0 -275.307 Td
+0 -275.3075 Td
(2476 popl %es) 65.5277 Tj
-0 -284.801 Td
+0 -284.8008 Td
(2477 popl %ds) 65.5277 Tj
-0 -294.294 Td
-(2478 addl $0x8, %esp # trapno and errcode) 192.215 Tj
-0 -303.788 Td
+0 -294.2942 Td
+(2478 addl $0x8, %esp # trapno and errcode) 192.2146 Tj
+0 -303.7875 Td
(2479 iret) 48.0537 Tj
-0 -313.281 Td
+0 -313.2809 Td
(2480 ) 21.8426 Tj
-0 -322.774 Td
-(2481 # A forked process switches to user mode by calling) 253.374 Tj
-0 -332.268 Td
-(2482 # forkret1\(tf\), where tf is the trap frame to use.) 249.005 Tj
+0 -322.7743 Td
+(2481 # A forked process switches to user mode by calling) 253.3738 Tj
+0 -332.2676 Td
+(2482 # forkret1\(tf\), where tf is the trap frame to use.) 249.0053 Tj
0 -341.761 Td
(2483 .globl forkret1) 87.3703 Tj
-0 -351.254 Td
+0 -351.2543 Td
(2484 forkret1:) 61.1592 Tj
-0 -360.748 Td
-(2485 movl 4\(%esp\), %esp) 109.213 Tj
-0 -370.241 Td
+0 -360.7477 Td
+(2485 movl 4\(%esp\), %esp) 109.2129 Tj
+0 -370.2411 Td
(2486 jmp trapret) 78.6333 Tj
-0 -379.734 Td
+0 -379.7344 Td
(2487 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(2488 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(2489 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(2490 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(2491 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(2492 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(2493 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(2494 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(2495 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(2496 ) 21.8426 Tj
0 -474.668 Td
(2497 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(2498 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(2499 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 24) 34.9481 Tj
Q
Q
@@ -10432,8 +10445,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -10448,16 +10460,16 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/trap.c Page 1) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/trap.c Page 1) 161.635 Tj
0 -28.4801 Td
-(2500 #include "types.h") 100.476 Tj
+(2500 #include "types.h") 100.4758 Tj
0 -37.9735 Td
(2501 #include "defs.h") 96.1073 Tj
0 -47.4668 Td
-(2502 #include "param.h") 100.476 Tj
+(2502 #include "param.h") 100.4758 Tj
0 -56.9602 Td
(2503 #include "mmu.h") 91.7388 Tj
0 -66.4535 Td
@@ -10465,97 +10477,96 @@ q
0 -75.9469 Td
(2505 #include "x86.h") 91.7388 Tj
0 -85.4403 Td
-(2506 #include "traps.h") 100.476 Tj
+(2506 #include "traps.h") 100.4758 Tj
0 -94.9336 Td
-(2507 #include "spinlock.h") 113.581 Tj
+(2507 #include "spinlock.h") 113.5814 Tj
0 -104.427 Td
(2508 ) 21.8426 Tj
-0 -113.92 Td
-(2509 // Interrupt descriptor table \(shared by all CPUs\).) 244.637 Tj
-0 -123.414 Td
-(2510 struct gatedesc idt[256];) 131.055 Tj
-0 -132.907 Td
+0 -113.9203 Td
+(2509 // Interrupt descriptor table \(shared by all CPUs\).) 244.6368 Tj
+0 -123.4137 Td
+(2510 struct gatedesc idt[256];) 131.0554 Tj
+0 -132.9071 Td
(2511 extern uint vectors[]; // in vectors.S: array of 256 entr\
-y pointers) 318.902 Tj
-0 -142.4 Td
-(2512 struct spinlock tickslock;) 135.424 Tj
-0 -151.894 Td
+y pointers) 318.9016 Tj
+0 -142.4004 Td
+(2512 struct spinlock tickslock;) 135.4239 Tj
+0 -151.8938 Td
(2513 int ticks;) 65.5277 Tj
-0 -161.387 Td
+0 -161.3871 Td
(2514 ) 21.8426 Tj
-0 -170.88 Td
+0 -170.8805 Td
(2515 void) 39.3166 Tj
-0 -180.374 Td
+0 -180.3739 Td
(2516 tvinit\(void\)) 74.2647 Tj
-0 -189.867 Td
+0 -189.8672 Td
(2517 {) 26.2111 Tj
-0 -199.361 Td
+0 -199.3606 Td
(2518 int i;) 56.7907 Tj
-0 -208.854 Td
+0 -208.8539 Td
(2519 ) 21.8426 Tj
-0 -218.347 Td
-(2520 for\(i = 0; i < 256; i++\)) 135.424 Tj
-0 -227.841 Td
-(2521 SETGATE\(idt[i], 0, SEG_KCODE<<3, vectors[i], 0\);) 249.005 Tj
+0 -218.3473 Td
+(2520 for\(i = 0; i < 256; i++\)) 135.4239 Tj
+0 -227.8407 Td
+(2521 SETGATE\(idt[i], 0, SEG_KCODE<<3, vectors[i], 0\);) 249.0053 Tj
0 -237.334 Td
-(2522 SETGATE\(idt[T_SYSCALL], 0, SEG_KCODE<<3, vectors[T_SYSC\
-ALL], DPL_USER\);) 340.744 Tj
-0 -246.827 Td
+(2522 SETGATE\(idt[T_SYSCALL], 1, SEG_KCODE<<3, vectors[T_SYSC\
+ALL], DPL_USER\);) 340.7441 Tj
+0 -246.8274 Td
(2523 ) 21.8426 Tj
-0 -256.321 Td
-(2524 initlock\(&tickslock, "time"\);) 157.267 Tj
-0 -265.814 Td
+0 -256.3207 Td
+(2524 initlock\(&tickslock, "time"\);) 157.2665 Tj
+0 -265.8141 Td
(2525 }) 26.2111 Tj
-0 -275.307 Td
+0 -275.3075 Td
(2526 ) 21.8426 Tj
-0 -284.801 Td
+0 -284.8008 Td
(2527 void) 39.3166 Tj
-0 -294.294 Td
+0 -294.2942 Td
(2528 idtinit\(void\)) 78.6333 Tj
-0 -303.788 Td
+0 -303.7875 Td
(2529 {) 26.2111 Tj
-0 -313.281 Td
-(2530 lidt\(idt, sizeof\(idt\)\);) 131.055 Tj
-0 -322.774 Td
+0 -313.2809 Td
+(2530 lidt\(idt, sizeof\(idt\)\);) 131.0554 Tj
+0 -322.7743 Td
(2531 }) 26.2111 Tj
-0 -332.268 Td
+0 -332.2676 Td
(2532 ) 21.8426 Tj
0 -341.761 Td
(2533 void) 39.3166 Tj
-0 -351.254 Td
-(2534 trap\(struct trapframe *tf\)) 135.424 Tj
-0 -360.748 Td
+0 -351.2543 Td
+(2534 trap\(struct trapframe *tf\)) 135.4239 Tj
+0 -360.7477 Td
(2535 {) 26.2111 Tj
-0 -370.241 Td
+0 -370.2411 Td
(2536 if\(tf->trapno == T_SYSCALL\){) 152.898 Tj
-0 -379.734 Td
-(2537 if\(cp->killed\)) 100.476 Tj
-0 -389.228 Td
+0 -379.7344 Td
+(2537 if\(cp->killed\)) 100.4758 Tj
+0 -389.2278 Td
(2538 exit\(\);) 78.6333 Tj
-0 -398.721 Td
+0 -398.7211 Td
(2539 cp->tf = tf;) 91.7388 Tj
-0 -408.214 Td
+0 -408.2145 Td
(2540 syscall\(\);) 83.0018 Tj
-0 -417.708 Td
-(2541 if\(cp->killed\)) 100.476 Tj
-0 -427.201 Td
+0 -417.7079 Td
+(2541 if\(cp->killed\)) 100.4758 Tj
+0 -427.2012 Td
(2542 exit\(\);) 78.6333 Tj
-0 -436.695 Td
+0 -436.6946 Td
(2543 return;) 69.8962 Tj
-0 -446.188 Td
+0 -446.1879 Td
(2544 }) 34.9481 Tj
-0 -455.681 Td
+0 -455.6813 Td
(2545 ) 21.8426 Tj
-0 -465.175 Td
-(2546 // Increment nlock to make sure interrupts stay off) 253.374 Tj
+0 -465.1747 Td
+(2546 switch\(tf->trapno\){) 113.5814 Tj
0 -474.668 Td
-(2547 // during interrupt handler. Decrement before returning\
-.) 279.585 Tj
-0 -484.161 Td
-(2548 cpus[cpu\(\)].nlock++;) 117.95 Tj
-0 -493.655 Td
-(2549 ) 21.8426 Tj
-0 -522.135 Td
+(2547 case IRQ_OFFSET + IRQ_TIMER:) 152.898 Tj
+0 -484.1614 Td
+(2548 if\(cpu\(\) == 0\){) 104.8443 Tj
+0 -493.6547 Td
+(2549 acquire\(&tickslock\);) 135.4239 Tj
+0 -522.1348 Td
(Sheet 25) 34.9481 Tj
Q
Q
@@ -10570,119 +10581,117 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/trap.c Page 2) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/trap.c Page 2) 161.635 Tj
0 -28.4801 Td
-(2550 switch\(tf->trapno\){) 113.581 Tj
+(2550 ticks++;) 83.0018 Tj
0 -37.9735 Td
-(2551 case IRQ_OFFSET + IRQ_TIMER:) 152.898 Tj
+(2551 wakeup\(&ticks\);) 113.5814 Tj
0 -47.4668 Td
-(2552 if\(cpu\(\) == 0\){) 104.844 Tj
+(2552 release\(&tickslock\);) 135.4239 Tj
0 -56.9602 Td
-(2553 acquire\(&tickslock\);) 135.424 Tj
+(2553 }) 43.6851 Tj
0 -66.4535 Td
-(2554 ticks++;) 83.0018 Tj
+(2554 lapic_eoi\(\);) 91.7388 Tj
0 -75.9469 Td
-(2555 wakeup\(&ticks\);) 113.581 Tj
+(2555 break;) 65.5277 Tj
0 -85.4403 Td
-(2556 release\(&tickslock\);) 135.424 Tj
+(2556 case IRQ_OFFSET + IRQ_IDE:) 144.161 Tj
0 -94.9336 Td
-(2557 }) 43.6851 Tj
+(2557 ide_intr\(\);) 87.3703 Tj
0 -104.427 Td
(2558 lapic_eoi\(\);) 91.7388 Tj
-0 -113.92 Td
+0 -113.9203 Td
(2559 break;) 65.5277 Tj
-0 -123.414 Td
-(2560 case IRQ_OFFSET + IRQ_IDE:) 144.161 Tj
-0 -132.907 Td
-(2561 ide_intr\(\);) 87.3703 Tj
-0 -142.4 Td
+0 -123.4137 Td
+(2560 case IRQ_OFFSET + IRQ_KBD:) 144.161 Tj
+0 -132.9071 Td
+(2561 kbd_intr\(\);) 87.3703 Tj
+0 -142.4004 Td
(2562 lapic_eoi\(\);) 91.7388 Tj
-0 -151.894 Td
+0 -151.8938 Td
(2563 break;) 65.5277 Tj
-0 -161.387 Td
-(2564 case IRQ_OFFSET + IRQ_KBD:) 144.161 Tj
-0 -170.88 Td
-(2565 kbd_intr\(\);) 87.3703 Tj
-0 -180.374 Td
-(2566 lapic_eoi\(\);) 91.7388 Tj
-0 -189.867 Td
-(2567 break;) 65.5277 Tj
-0 -199.361 Td
-(2568 case IRQ_OFFSET + IRQ_SPURIOUS:) 166.004 Tj
-0 -208.854 Td
-(2569 cprintf\("spurious interrupt from cpu %d eip %x\\n", c\
-pu\(\), tf->eip\);) 332.007 Tj
-0 -218.347 Td
-(2570 lapic_eoi\(\);) 91.7388 Tj
-0 -227.841 Td
-(2571 break;) 65.5277 Tj
+0 -161.3871 Td
+(2564 case IRQ_OFFSET + IRQ_SPURIOUS:) 166.0035 Tj
+0 -170.8805 Td
+(2565 cprintf\("cpu%d: spurious interrupt at %x:%x\\n",) 244.6368 Tj
+0 -180.3739 Td
+(2566 cpu\(\), tf->cs, tf->eip\);) 179.1091 Tj
+0 -189.8672 Td
+(2567 lapic_eoi\(\);) 91.7388 Tj
+0 -199.3606 Td
+(2568 break;) 65.5277 Tj
+0 -208.8539 Td
+(2569 ) 21.8426 Tj
+0 -218.3473 Td
+(2570 default:) 65.5277 Tj
+0 -227.8407 Td
+(2571 if\(cp == 0 || \(tf->cs&3\) == 0\){) 174.7406 Tj
0 -237.334 Td
-(2572 ) 21.8426 Tj
-0 -246.827 Td
-(2573 default:) 65.5277 Tj
-0 -256.321 Td
-(2574 if\(cp == 0\){) 91.7388 Tj
-0 -265.814 Td
-(2575 // Otherwise it's our mistake.) 179.109 Tj
-0 -275.307 Td
-(2576 cprintf\("unexpected trap %d from cpu %d eip %x\\n",) 266.479 Tj
-0 -284.801 Td
-(2577 tf->trapno, cpu\(\), tf->eip\);) 205.32 Tj
-0 -294.294 Td
-(2578 panic\("trap"\);) 109.213 Tj
-0 -303.788 Td
-(2579 }) 43.6851 Tj
-0 -313.281 Td
-(2580 // Assume process divided by zero or dereferenced null\
-, etc.) 301.427 Tj
-0 -322.774 Td
-(2581 cprintf\("pid %d %s: trap %d err %d on cpu %d eip %x -\
-- kill proc\\n",) 336.376 Tj
-0 -332.268 Td
-(2582 cp->pid, cp->name, tf->trapno, tf->err, cpu\(\)\
-, tf->eip\);) 318.902 Tj
+(2572 // In kernel, it must be our mistake.) 209.6887 Tj
+0 -246.8274 Td
+(2573 cprintf\("unexpected trap %d from cpu %d eip %x\\n",) 266.4794 Tj
+0 -256.3207 Td
+(2574 tf->trapno, cpu\(\), tf->eip\);) 205.3202 Tj
+0 -265.8141 Td
+(2575 panic\("trap"\);) 109.2129 Tj
+0 -275.3075 Td
+(2576 }) 43.6851 Tj
+0 -284.8008 Td
+(2577 // In user space, assume process misbehaved.) 231.5313 Tj
+0 -294.2942 Td
+(2578 cprintf\("pid %d %s: trap %d err %d on cpu %d eip %x -\
+- kill proc\\n",) 336.3756 Tj
+0 -303.7875 Td
+(2579 cp->pid, cp->name, tf->trapno, tf->err, cpu\(\)\
+, tf->eip\);) 318.9016 Tj
+0 -313.2809 Td
+(2580 cp->killed = 1;) 104.8443 Tj
+0 -322.7743 Td
+(2581 }) 34.9481 Tj
+0 -332.2676 Td
+(2582 ) 21.8426 Tj
0 -341.761 Td
-(2583 cp->killed = 1;) 104.844 Tj
-0 -351.254 Td
-(2584 }) 34.9481 Tj
-0 -360.748 Td
-(2585 cpus[cpu\(\)].nlock--;) 117.95 Tj
-0 -370.241 Td
-(2586 ) 21.8426 Tj
-0 -379.734 Td
-(2587 // Force process exit if it has been killed and is in us\
+(2583 // Force process exit if it has been killed and is in us\
er space.) 314.533 Tj
-0 -389.228 Td
-(2588 // \(If it is still executing in the kernel, let it keep\
+0 -351.2543 Td
+(2584 // \(If it is still executing in the kernel, let it keep\
running) 305.796 Tj
-0 -398.721 Td
-(2589 // until it gets to the regular system call return.\)) 257.742 Tj
-0 -408.214 Td
-(2590 if\(cp && cp->killed && \(tf->cs&3\) == DPL_USER\)) 231.531 Tj
-0 -417.708 Td
-(2591 exit\(\);) 69.8962 Tj
-0 -427.201 Td
-(2592 ) 21.8426 Tj
-0 -436.695 Td
-(2593 // Force process to give up CPU on clock tick.) 231.531 Tj
-0 -446.188 Td
-(2594 // If interrupts were on while locks held, would need to\
- check nlock.) 332.007 Tj
-0 -455.681 Td
-(2595 if\(cp && cp->state == RUNNING && tf->trapno == IRQ_OFFS\
-ET+IRQ_TIMER\)) 327.639 Tj
-0 -465.175 Td
-(2596 yield\(\);) 74.2647 Tj
+0 -360.7477 Td
+(2585 // until it gets to the regular system call return.\)) 257.7424 Tj
+0 -370.2411 Td
+(2586 if\(cp && cp->killed && \(tf->cs&3\) == DPL_USER\)) 231.5313 Tj
+0 -379.7344 Td
+(2587 exit\(\);) 69.8962 Tj
+0 -389.2278 Td
+(2588 ) 21.8426 Tj
+0 -398.7211 Td
+(2589 // Force process to give up CPU on clock tick.) 231.5313 Tj
+0 -408.2145 Td
+(2590 // If interrupts were on while locks held, would need to\
+ check nlock.) 332.0071 Tj
+0 -417.7079 Td
+(2591 if\(cp && cp->state == RUNNING && tf->trapno == IRQ_OFFS\
+ET+IRQ_TIMER\)) 327.6386 Tj
+0 -427.2012 Td
+(2592 yield\(\);) 74.2647 Tj
+0 -436.6946 Td
+(2593 }) 26.2111 Tj
+0 -446.1879 Td
+(2594 ) 21.8426 Tj
+0 -455.6813 Td
+(2595 ) 21.8426 Tj
+0 -465.1747 Td
+(2596 ) 21.8426 Tj
0 -474.668 Td
-(2597 }) 26.2111 Tj
-0 -484.161 Td
+(2597 ) 21.8426 Tj
+0 -484.1614 Td
(2598 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(2599 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 25) 34.9481 Tj
Q
Q
@@ -10711,8 +10720,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -10727,111 +10735,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/syscall.h Page 1) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/syscall.h Page 1) 174.7406 Tj
0 -28.4801 Td
-(2600 // System call numbers) 117.95 Tj
+(2600 // System call numbers) 117.9499 Tj
0 -37.9735 Td
-(2601 #define SYS_fork 1) 113.581 Tj
+(2601 #define SYS_fork 1) 113.5814 Tj
0 -47.4668 Td
-(2602 #define SYS_exit 2) 113.581 Tj
+(2602 #define SYS_exit 2) 113.5814 Tj
0 -56.9602 Td
-(2603 #define SYS_wait 3) 113.581 Tj
+(2603 #define SYS_wait 3) 113.5814 Tj
0 -66.4535 Td
-(2604 #define SYS_pipe 4) 113.581 Tj
+(2604 #define SYS_pipe 4) 113.5814 Tj
0 -75.9469 Td
-(2605 #define SYS_write 5) 113.581 Tj
+(2605 #define SYS_write 5) 113.5814 Tj
0 -85.4403 Td
-(2606 #define SYS_read 6) 113.581 Tj
+(2606 #define SYS_read 6) 113.5814 Tj
0 -94.9336 Td
-(2607 #define SYS_close 7) 113.581 Tj
+(2607 #define SYS_close 7) 113.5814 Tj
0 -104.427 Td
-(2608 #define SYS_kill 8) 113.581 Tj
-0 -113.92 Td
-(2609 #define SYS_exec 9) 113.581 Tj
-0 -123.414 Td
-(2610 #define SYS_open 10) 113.581 Tj
-0 -132.907 Td
-(2611 #define SYS_mknod 11) 113.581 Tj
-0 -142.4 Td
-(2612 #define SYS_unlink 12) 113.581 Tj
-0 -151.894 Td
-(2613 #define SYS_fstat 13) 113.581 Tj
-0 -161.387 Td
-(2614 #define SYS_link 14) 113.581 Tj
-0 -170.88 Td
-(2615 #define SYS_mkdir 15) 113.581 Tj
-0 -180.374 Td
-(2616 #define SYS_chdir 16) 113.581 Tj
-0 -189.867 Td
-(2617 #define SYS_dup 17) 113.581 Tj
-0 -199.361 Td
-(2618 #define SYS_getpid 18) 113.581 Tj
-0 -208.854 Td
-(2619 #define SYS_sbrk 19) 113.581 Tj
-0 -218.347 Td
-(2620 #define SYS_sleep 20) 113.581 Tj
-0 -227.841 Td
+(2608 #define SYS_kill 8) 113.5814 Tj
+0 -113.9203 Td
+(2609 #define SYS_exec 9) 113.5814 Tj
+0 -123.4137 Td
+(2610 #define SYS_open 10) 113.5814 Tj
+0 -132.9071 Td
+(2611 #define SYS_mknod 11) 113.5814 Tj
+0 -142.4004 Td
+(2612 #define SYS_unlink 12) 113.5814 Tj
+0 -151.8938 Td
+(2613 #define SYS_fstat 13) 113.5814 Tj
+0 -161.3871 Td
+(2614 #define SYS_link 14) 113.5814 Tj
+0 -170.8805 Td
+(2615 #define SYS_mkdir 15) 113.5814 Tj
+0 -180.3739 Td
+(2616 #define SYS_chdir 16) 113.5814 Tj
+0 -189.8672 Td
+(2617 #define SYS_dup 17) 113.5814 Tj
+0 -199.3606 Td
+(2618 #define SYS_getpid 18) 113.5814 Tj
+0 -208.8539 Td
+(2619 #define SYS_sbrk 19) 113.5814 Tj
+0 -218.3473 Td
+(2620 #define SYS_sleep 20) 113.5814 Tj
+0 -227.8407 Td
(2621 ) 21.8426 Tj
0 -237.334 Td
(2622 ) 21.8426 Tj
-0 -246.827 Td
+0 -246.8274 Td
(2623 ) 21.8426 Tj
-0 -256.321 Td
+0 -256.3207 Td
(2624 ) 21.8426 Tj
-0 -265.814 Td
+0 -265.8141 Td
(2625 ) 21.8426 Tj
-0 -275.307 Td
+0 -275.3075 Td
(2626 ) 21.8426 Tj
-0 -284.801 Td
+0 -284.8008 Td
(2627 ) 21.8426 Tj
-0 -294.294 Td
+0 -294.2942 Td
(2628 ) 21.8426 Tj
-0 -303.788 Td
+0 -303.7875 Td
(2629 ) 21.8426 Tj
-0 -313.281 Td
+0 -313.2809 Td
(2630 ) 21.8426 Tj
-0 -322.774 Td
+0 -322.7743 Td
(2631 ) 21.8426 Tj
-0 -332.268 Td
+0 -332.2676 Td
(2632 ) 21.8426 Tj
0 -341.761 Td
(2633 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(2634 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(2635 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(2636 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(2637 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(2638 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(2639 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(2640 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(2641 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(2642 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(2643 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(2644 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(2645 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(2646 ) 21.8426 Tj
0 -474.668 Td
(2647 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(2648 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(2649 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 26) 34.9481 Tj
Q
Q
@@ -10846,16 +10854,16 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/syscall.c Page 1) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/syscall.c Page 1) 174.7406 Tj
0 -28.4801 Td
-(2650 #include "types.h") 100.476 Tj
+(2650 #include "types.h") 100.4758 Tj
0 -37.9735 Td
(2651 #include "defs.h") 96.1073 Tj
0 -47.4668 Td
-(2652 #include "param.h") 100.476 Tj
+(2652 #include "param.h") 100.4758 Tj
0 -56.9602 Td
(2653 #include "mmu.h") 91.7388 Tj
0 -66.4535 Td
@@ -10863,97 +10871,97 @@ q
0 -75.9469 Td
(2655 #include "x86.h") 91.7388 Tj
0 -85.4403 Td
-(2656 #include "syscall.h") 109.213 Tj
+(2656 #include "syscall.h") 109.2129 Tj
0 -94.9336 Td
(2657 ) 21.8426 Tj
0 -104.427 Td
-(2658 // User code makes a system call with INT T_SYSCALL.) 249.005 Tj
-0 -113.92 Td
+(2658 // User code makes a system call with INT T_SYSCALL.) 249.0053 Tj
+0 -113.9203 Td
(2659 // System call number in %eax.) 152.898 Tj
-0 -123.414 Td
-(2660 // Arguments on the stack, from the user call to the C) 257.742 Tj
-0 -132.907 Td
+0 -123.4137 Td
+(2660 // Arguments on the stack, from the user call to the C) 257.7424 Tj
+0 -132.9071 Td
(2661 // library system call function. The saved user %esp point\
-s) 279.585 Tj
-0 -142.4 Td
+s) 279.5849 Tj
+0 -142.4004 Td
(2662 // to a saved program counter, and then the first argument\
-.) 279.585 Tj
-0 -151.894 Td
+.) 279.5849 Tj
+0 -151.8938 Td
(2663 ) 21.8426 Tj
-0 -161.387 Td
-(2664 // Fetch the int at addr from process p.) 196.583 Tj
-0 -170.88 Td
+0 -161.3871 Td
+(2664 // Fetch the int at addr from process p.) 196.5831 Tj
+0 -170.8805 Td
(2665 int) 34.9481 Tj
-0 -180.374 Td
-(2666 fetchint\(struct proc *p, uint addr, int *ip\)) 214.057 Tj
-0 -189.867 Td
+0 -180.3739 Td
+(2666 fetchint\(struct proc *p, uint addr, int *ip\)) 214.0572 Tj
+0 -189.8672 Td
(2667 {) 26.2111 Tj
-0 -199.361 Td
-(2668 if\(addr >= p->sz || addr+4 > p->sz\)) 183.478 Tj
-0 -208.854 Td
+0 -199.3606 Td
+(2668 if\(addr >= p->sz || addr+4 > p->sz\)) 183.4776 Tj
+0 -208.8539 Td
(2669 return -1;) 83.0018 Tj
-0 -218.347 Td
-(2670 *ip = *\(int*\)\(p->mem + addr\);) 157.267 Tj
-0 -227.841 Td
+0 -218.3473 Td
+(2670 *ip = *\(int*\)\(p->mem + addr\);) 157.2665 Tj
+0 -227.8407 Td
(2671 return 0;) 69.8962 Tj
0 -237.334 Td
(2672 }) 26.2111 Tj
-0 -246.827 Td
+0 -246.8274 Td
(2673 ) 21.8426 Tj
-0 -256.321 Td
-(2674 // Fetch the nul-terminated string at addr from process p.) 275.216 Tj
-0 -265.814 Td
+0 -256.3207 Td
+(2674 // Fetch the nul-terminated string at addr from process p.) 275.2164 Tj
+0 -265.8141 Td
(2675 // Doesn't actually copy the string - just sets *pp to poi\
nt at it.) 314.533 Tj
-0 -275.307 Td
-(2676 // Returns length of string, not including nul.) 227.163 Tj
-0 -284.801 Td
+0 -275.3075 Td
+(2676 // Returns length of string, not including nul.) 227.1628 Tj
+0 -284.8008 Td
(2677 int) 34.9481 Tj
-0 -294.294 Td
-(2678 fetchstr\(struct proc *p, uint addr, char **pp\)) 222.794 Tj
-0 -303.788 Td
+0 -294.2942 Td
+(2678 fetchstr\(struct proc *p, uint addr, char **pp\)) 222.7942 Tj
+0 -303.7875 Td
(2679 {) 26.2111 Tj
-0 -313.281 Td
+0 -313.2809 Td
(2680 char *s, *ep;) 87.3703 Tj
-0 -322.774 Td
+0 -322.7743 Td
(2681 ) 21.8426 Tj
-0 -332.268 Td
-(2682 if\(addr >= p->sz\)) 104.844 Tj
+0 -332.2676 Td
+(2682 if\(addr >= p->sz\)) 104.8443 Tj
0 -341.761 Td
(2683 return -1;) 83.0018 Tj
-0 -351.254 Td
-(2684 *pp = p->mem + addr;) 117.95 Tj
-0 -360.748 Td
-(2685 ep = p->mem + p->sz;) 117.95 Tj
-0 -370.241 Td
-(2686 for\(s = *pp; s < ep; s++\)) 139.792 Tj
-0 -379.734 Td
+0 -351.2543 Td
+(2684 *pp = p->mem + addr;) 117.9499 Tj
+0 -360.7477 Td
+(2685 ep = p->mem + p->sz;) 117.9499 Tj
+0 -370.2411 Td
+(2686 for\(s = *pp; s < ep; s++\)) 139.7925 Tj
+0 -379.7344 Td
(2687 if\(*s == 0\)) 87.3703 Tj
-0 -389.228 Td
-(2688 return s - *pp;) 113.581 Tj
-0 -398.721 Td
+0 -389.2278 Td
+(2688 return s - *pp;) 113.5814 Tj
+0 -398.7211 Td
(2689 return -1;) 74.2647 Tj
-0 -408.214 Td
+0 -408.2145 Td
(2690 }) 26.2111 Tj
-0 -417.708 Td
+0 -417.7079 Td
(2691 ) 21.8426 Tj
-0 -427.201 Td
-(2692 // Fetch the nth 32-bit system call argument.) 218.426 Tj
-0 -436.695 Td
+0 -427.2012 Td
+(2692 // Fetch the nth 32-bit system call argument.) 218.4257 Tj
+0 -436.6946 Td
(2693 int) 34.9481 Tj
-0 -446.188 Td
-(2694 argint\(int n, int *ip\)) 117.95 Tj
-0 -455.681 Td
+0 -446.1879 Td
+(2694 argint\(int n, int *ip\)) 117.9499 Tj
+0 -455.6813 Td
(2695 {) 26.2111 Tj
-0 -465.175 Td
-(2696 return fetchint\(cp, cp->tf->esp + 4 + 4*n, ip\);) 235.9 Tj
+0 -465.1747 Td
+(2696 return fetchint\(cp, cp->tf->esp + 4 + 4*n, ip\);) 235.8998 Tj
0 -474.668 Td
(2697 }) 26.2111 Tj
-0 -484.161 Td
+0 -484.1614 Td
(2698 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(2699 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 26) 34.9481 Tj
Q
Q
@@ -10982,8 +10990,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -10998,22 +11005,22 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/syscall.c Page 2) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/syscall.c Page 2) 174.7406 Tj
0 -28.4801 Td
(2700 // Fetch the nth word-sized system call argument as a poin\
ter) 288.322 Tj
0 -37.9735 Td
(2701 // to a block of memory of size n bytes. Check that the p\
-ointer) 301.427 Tj
+ointer) 301.4275 Tj
0 -47.4668 Td
-(2702 // lies within the process address space.) 200.952 Tj
+(2702 // lies within the process address space.) 200.9517 Tj
0 -56.9602 Td
(2703 int) 34.9481 Tj
0 -66.4535 Td
-(2704 argptr\(int n, char **pp, int size\)) 170.372 Tj
+(2704 argptr\(int n, char **pp, int size\)) 170.3721 Tj
0 -75.9469 Td
(2705 {) 26.2111 Tj
0 -85.4403 Td
@@ -11021,93 +11028,93 @@ ointer) 301.427 Tj
0 -94.9336 Td
(2707 ) 21.8426 Tj
0 -104.427 Td
-(2708 if\(argint\(n, &i\) < 0\)) 122.318 Tj
-0 -113.92 Td
+(2708 if\(argint\(n, &i\) < 0\)) 122.3184 Tj
+0 -113.9203 Td
(2709 return -1;) 83.0018 Tj
-0 -123.414 Td
-(2710 if\(\(uint\)i >= cp->sz || \(uint\)i+size >= cp->sz\)) 235.9 Tj
-0 -132.907 Td
+0 -123.4137 Td
+(2710 if\(\(uint\)i >= cp->sz || \(uint\)i+size >= cp->sz\)) 235.8998 Tj
+0 -132.9071 Td
(2711 return -1;) 83.0018 Tj
-0 -142.4 Td
-(2712 *pp = cp->mem + i;) 109.213 Tj
-0 -151.894 Td
+0 -142.4004 Td
+(2712 *pp = cp->mem + i;) 109.2129 Tj
+0 -151.8938 Td
(2713 return 0;) 69.8962 Tj
-0 -161.387 Td
+0 -161.3871 Td
(2714 }) 26.2111 Tj
-0 -170.88 Td
+0 -170.8805 Td
(2715 ) 21.8426 Tj
-0 -180.374 Td
+0 -180.3739 Td
(2716 // Fetch the nth word-sized system call argument as a stri\
-ng pointer.) 323.27 Tj
-0 -189.867 Td
+ng pointer.) 323.2701 Tj
+0 -189.8672 Td
(2717 // Check that the pointer is valid and the string is nul-t\
-erminated.) 318.902 Tj
-0 -199.361 Td
+erminated.) 318.9016 Tj
+0 -199.3606 Td
(2718 // \(There is no shared writable memory, so the string can\
-'t change) 310.165 Tj
-0 -208.854 Td
-(2719 // between this check and being used by the kernel.\)) 249.005 Tj
-0 -218.347 Td
+'t change) 310.1645 Tj
+0 -208.8539 Td
+(2719 // between this check and being used by the kernel.\)) 249.0053 Tj
+0 -218.3473 Td
(2720 int) 34.9481 Tj
-0 -227.841 Td
-(2721 argstr\(int n, char **pp\)) 126.687 Tj
+0 -227.8407 Td
+(2721 argstr\(int n, char **pp\)) 126.6869 Tj
0 -237.334 Td
(2722 {) 26.2111 Tj
-0 -246.827 Td
+0 -246.8274 Td
(2723 int addr;) 69.8962 Tj
-0 -256.321 Td
-(2724 if\(argint\(n, &addr\) < 0\)) 135.424 Tj
-0 -265.814 Td
+0 -256.3207 Td
+(2724 if\(argint\(n, &addr\) < 0\)) 135.4239 Tj
+0 -265.8141 Td
(2725 return -1;) 83.0018 Tj
-0 -275.307 Td
+0 -275.3075 Td
(2726 return fetchstr\(cp, addr, pp\);) 161.635 Tj
-0 -284.801 Td
+0 -284.8008 Td
(2727 }) 26.2111 Tj
-0 -294.294 Td
+0 -294.2942 Td
(2728 ) 21.8426 Tj
-0 -303.788 Td
-(2729 extern int sys_chdir\(void\);) 139.792 Tj
-0 -313.281 Td
-(2730 extern int sys_close\(void\);) 139.792 Tj
-0 -322.774 Td
-(2731 extern int sys_dup\(void\);) 131.055 Tj
-0 -332.268 Td
-(2732 extern int sys_exec\(void\);) 135.424 Tj
+0 -303.7875 Td
+(2729 extern int sys_chdir\(void\);) 139.7925 Tj
+0 -313.2809 Td
+(2730 extern int sys_close\(void\);) 139.7925 Tj
+0 -322.7743 Td
+(2731 extern int sys_dup\(void\);) 131.0554 Tj
+0 -332.2676 Td
+(2732 extern int sys_exec\(void\);) 135.4239 Tj
0 -341.761 Td
-(2733 extern int sys_exit\(void\);) 135.424 Tj
-0 -351.254 Td
-(2734 extern int sys_fork\(void\);) 135.424 Tj
-0 -360.748 Td
-(2735 extern int sys_fstat\(void\);) 139.792 Tj
-0 -370.241 Td
+(2733 extern int sys_exit\(void\);) 135.4239 Tj
+0 -351.2543 Td
+(2734 extern int sys_fork\(void\);) 135.4239 Tj
+0 -360.7477 Td
+(2735 extern int sys_fstat\(void\);) 139.7925 Tj
+0 -370.2411 Td
(2736 extern int sys_getpid\(void\);) 144.161 Tj
-0 -379.734 Td
-(2737 extern int sys_kill\(void\);) 135.424 Tj
-0 -389.228 Td
-(2738 extern int sys_link\(void\);) 135.424 Tj
-0 -398.721 Td
-(2739 extern int sys_mkdir\(void\);) 139.792 Tj
-0 -408.214 Td
-(2740 extern int sys_mknod\(void\);) 139.792 Tj
-0 -417.708 Td
-(2741 extern int sys_open\(void\);) 135.424 Tj
-0 -427.201 Td
-(2742 extern int sys_pipe\(void\);) 135.424 Tj
-0 -436.695 Td
-(2743 extern int sys_read\(void\);) 135.424 Tj
-0 -446.188 Td
-(2744 extern int sys_sbrk\(void\);) 135.424 Tj
-0 -455.681 Td
-(2745 extern int sys_sleep\(void\);) 139.792 Tj
-0 -465.175 Td
+0 -379.7344 Td
+(2737 extern int sys_kill\(void\);) 135.4239 Tj
+0 -389.2278 Td
+(2738 extern int sys_link\(void\);) 135.4239 Tj
+0 -398.7211 Td
+(2739 extern int sys_mkdir\(void\);) 139.7925 Tj
+0 -408.2145 Td
+(2740 extern int sys_mknod\(void\);) 139.7925 Tj
+0 -417.7079 Td
+(2741 extern int sys_open\(void\);) 135.4239 Tj
+0 -427.2012 Td
+(2742 extern int sys_pipe\(void\);) 135.4239 Tj
+0 -436.6946 Td
+(2743 extern int sys_read\(void\);) 135.4239 Tj
+0 -446.1879 Td
+(2744 extern int sys_sbrk\(void\);) 135.4239 Tj
+0 -455.6813 Td
+(2745 extern int sys_sleep\(void\);) 139.7925 Tj
+0 -465.1747 Td
(2746 extern int sys_unlink\(void\);) 144.161 Tj
0 -474.668 Td
-(2747 extern int sys_wait\(void\);) 135.424 Tj
-0 -484.161 Td
-(2748 extern int sys_write\(void\);) 139.792 Tj
-0 -493.655 Td
+(2747 extern int sys_wait\(void\);) 135.4239 Tj
+0 -484.1614 Td
+(2748 extern int sys_write\(void\);) 139.7925 Tj
+0 -493.6547 Td
(2749 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 27) 34.9481 Tj
Q
Q
@@ -11122,112 +11129,112 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/syscall.c Page 3) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/syscall.c Page 3) 174.7406 Tj
0 -28.4801 Td
-(2750 static int \(*syscalls[]\)\(void\) = {) 170.372 Tj
+(2750 static int \(*syscalls[]\)\(void\) = {) 170.3721 Tj
0 -37.9735 Td
-(2751 [SYS_chdir] sys_chdir,) 126.687 Tj
+(2751 [SYS_chdir] sys_chdir,) 126.6869 Tj
0 -47.4668 Td
-(2752 [SYS_close] sys_close,) 126.687 Tj
+(2752 [SYS_close] sys_close,) 126.6869 Tj
0 -56.9602 Td
-(2753 [SYS_dup] sys_dup,) 117.95 Tj
+(2753 [SYS_dup] sys_dup,) 117.9499 Tj
0 -66.4535 Td
-(2754 [SYS_exec] sys_exec,) 122.318 Tj
+(2754 [SYS_exec] sys_exec,) 122.3184 Tj
0 -75.9469 Td
-(2755 [SYS_exit] sys_exit,) 122.318 Tj
+(2755 [SYS_exit] sys_exit,) 122.3184 Tj
0 -85.4403 Td
-(2756 [SYS_fork] sys_fork,) 122.318 Tj
+(2756 [SYS_fork] sys_fork,) 122.3184 Tj
0 -94.9336 Td
-(2757 [SYS_fstat] sys_fstat,) 126.687 Tj
+(2757 [SYS_fstat] sys_fstat,) 126.6869 Tj
0 -104.427 Td
-(2758 [SYS_getpid] sys_getpid,) 131.055 Tj
-0 -113.92 Td
-(2759 [SYS_kill] sys_kill,) 122.318 Tj
-0 -123.414 Td
-(2760 [SYS_link] sys_link,) 122.318 Tj
-0 -132.907 Td
-(2761 [SYS_mkdir] sys_mkdir,) 126.687 Tj
-0 -142.4 Td
-(2762 [SYS_mknod] sys_mknod,) 126.687 Tj
-0 -151.894 Td
-(2763 [SYS_open] sys_open,) 122.318 Tj
-0 -161.387 Td
-(2764 [SYS_pipe] sys_pipe,) 122.318 Tj
-0 -170.88 Td
-(2765 [SYS_read] sys_read,) 122.318 Tj
-0 -180.374 Td
-(2766 [SYS_sbrk] sys_sbrk,) 122.318 Tj
-0 -189.867 Td
-(2767 [SYS_sleep] sys_sleep,) 126.687 Tj
-0 -199.361 Td
-(2768 [SYS_unlink] sys_unlink,) 131.055 Tj
-0 -208.854 Td
-(2769 [SYS_wait] sys_wait,) 122.318 Tj
-0 -218.347 Td
-(2770 [SYS_write] sys_write,) 126.687 Tj
-0 -227.841 Td
+(2758 [SYS_getpid] sys_getpid,) 131.0554 Tj
+0 -113.9203 Td
+(2759 [SYS_kill] sys_kill,) 122.3184 Tj
+0 -123.4137 Td
+(2760 [SYS_link] sys_link,) 122.3184 Tj
+0 -132.9071 Td
+(2761 [SYS_mkdir] sys_mkdir,) 126.6869 Tj
+0 -142.4004 Td
+(2762 [SYS_mknod] sys_mknod,) 126.6869 Tj
+0 -151.8938 Td
+(2763 [SYS_open] sys_open,) 122.3184 Tj
+0 -161.3871 Td
+(2764 [SYS_pipe] sys_pipe,) 122.3184 Tj
+0 -170.8805 Td
+(2765 [SYS_read] sys_read,) 122.3184 Tj
+0 -180.3739 Td
+(2766 [SYS_sbrk] sys_sbrk,) 122.3184 Tj
+0 -189.8672 Td
+(2767 [SYS_sleep] sys_sleep,) 126.6869 Tj
+0 -199.3606 Td
+(2768 [SYS_unlink] sys_unlink,) 131.0554 Tj
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+(2769 [SYS_wait] sys_wait,) 122.3184 Tj
+0 -218.3473 Td
+(2770 [SYS_write] sys_write,) 126.6869 Tj
+0 -227.8407 Td
(2771 };) 30.5796 Tj
0 -237.334 Td
(2772 ) 21.8426 Tj
-0 -246.827 Td
+0 -246.8274 Td
(2773 void) 39.3166 Tj
-0 -256.321 Td
+0 -256.3207 Td
(2774 syscall\(void\)) 78.6333 Tj
-0 -265.814 Td
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(2775 {) 26.2111 Tj
-0 -275.307 Td
+0 -275.3075 Td
(2776 int num;) 65.5277 Tj
-0 -284.801 Td
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(2777 ) 21.8426 Tj
-0 -294.294 Td
-(2778 num = cp->tf->eax;) 109.213 Tj
-0 -303.788 Td
+0 -294.2942 Td
+(2778 num = cp->tf->eax;) 109.2129 Tj
+0 -303.7875 Td
(2779 if\(num >= 0 && num < NELEM\(syscalls\) && syscalls[num]\
-\)) 266.479 Tj
-0 -313.281 Td
-(2780 cp->tf->eax = syscalls[num]\(\);) 170.372 Tj
-0 -322.774 Td
+\)) 266.4794 Tj
+0 -313.2809 Td
+(2780 cp->tf->eax = syscalls[num]\(\);) 170.3721 Tj
+0 -322.7743 Td
(2781 else {) 56.7907 Tj
-0 -332.268 Td
-(2782 cprintf\("%d %s: unknown sys call %d\\n",) 209.689 Tj
+0 -332.2676 Td
+(2782 cprintf\("%d %s: unknown sys call %d\\n",) 209.6887 Tj
0 -341.761 Td
-(2783 cp->pid, cp->name, num\);) 179.109 Tj
-0 -351.254 Td
-(2784 cp->tf->eax = -1;) 113.581 Tj
-0 -360.748 Td
+(2783 cp->pid, cp->name, num\);) 179.1091 Tj
+0 -351.2543 Td
+(2784 cp->tf->eax = -1;) 113.5814 Tj
+0 -360.7477 Td
(2785 }) 34.9481 Tj
-0 -370.241 Td
+0 -370.2411 Td
(2786 }) 26.2111 Tj
-0 -379.734 Td
+0 -379.7344 Td
(2787 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(2788 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(2789 ) 21.8426 Tj
-0 -408.214 Td
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(2790 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(2791 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(2792 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(2793 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(2794 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(2795 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(2796 ) 21.8426 Tj
0 -474.668 Td
(2797 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(2798 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(2799 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 27) 34.9481 Tj
Q
Q
@@ -11256,8 +11263,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -11272,16 +11278,16 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sysproc.c Page 1) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sysproc.c Page 1) 174.7406 Tj
0 -28.4801 Td
-(2800 #include "types.h") 100.476 Tj
+(2800 #include "types.h") 100.4758 Tj
0 -37.9735 Td
(2801 #include "defs.h") 96.1073 Tj
0 -47.4668 Td
-(2802 #include "param.h") 100.476 Tj
+(2802 #include "param.h") 100.4758 Tj
0 -56.9602 Td
(2803 #include "mmu.h") 91.7388 Tj
0 -66.4535 Td
@@ -11294,89 +11300,89 @@ q
(2807 sys_fork\(void\)) 83.0018 Tj
0 -104.427 Td
(2808 {) 26.2111 Tj
-0 -113.92 Td
-(2809 struct proc *np;) 100.476 Tj
-0 -123.414 Td
-(2810 ) 21.8426 Tj
-0 -132.907 Td
-(2811 if\(\(np = copyproc\(cp\)\) == 0\)) 152.898 Tj
-0 -142.4 Td
-(2812 return -1;) 83.0018 Tj
-0 -151.894 Td
-(2813 np->state = RUNNABLE;) 122.318 Tj
-0 -161.387 Td
-(2814 return np->pid;) 96.1073 Tj
-0 -170.88 Td
-(2815 }) 26.2111 Tj
-0 -180.374 Td
-(2816 ) 21.8426 Tj
-0 -189.867 Td
-(2817 int) 34.9481 Tj
-0 -199.361 Td
-(2818 sys_exit\(void\)) 83.0018 Tj
-0 -208.854 Td
-(2819 {) 26.2111 Tj
-0 -218.347 Td
-(2820 exit\(\);) 61.1592 Tj
-0 -227.841 Td
-(2821 return 0; // not reached) 139.792 Tj
+0 -113.9203 Td
+(2809 int pid;) 65.5277 Tj
+0 -123.4137 Td
+(2810 struct proc *np;) 100.4758 Tj
+0 -132.9071 Td
+(2811 ) 21.8426 Tj
+0 -142.4004 Td
+(2812 if\(\(np = copyproc\(cp\)\) == 0\)) 152.898 Tj
+0 -151.8938 Td
+(2813 return -1;) 83.0018 Tj
+0 -161.3871 Td
+(2814 pid = np->pid;) 91.7388 Tj
+0 -170.8805 Td
+(2815 np->state = RUNNABLE;) 122.3184 Tj
+0 -180.3739 Td
+(2816 return pid;) 78.6333 Tj
+0 -189.8672 Td
+(2817 }) 26.2111 Tj
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+(2818 ) 21.8426 Tj
+0 -208.8539 Td
+(2819 int) 34.9481 Tj
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+(2820 sys_exit\(void\)) 83.0018 Tj
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0 -237.334 Td
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-0 -246.827 Td
-(2823 ) 21.8426 Tj
-0 -256.321 Td
-(2824 int) 34.9481 Tj
-0 -265.814 Td
-(2825 sys_wait\(void\)) 83.0018 Tj
-0 -275.307 Td
-(2826 {) 26.2111 Tj
-0 -284.801 Td
-(2827 return wait\(\);) 91.7388 Tj
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-0 -303.788 Td
-(2829 ) 21.8426 Tj
-0 -313.281 Td
-(2830 int) 34.9481 Tj
-0 -322.774 Td
-(2831 sys_kill\(void\)) 83.0018 Tj
-0 -332.268 Td
-(2832 {) 26.2111 Tj
+(2822 exit\(\);) 61.1592 Tj
+0 -246.8274 Td
+(2823 return 0; // not reached) 139.7925 Tj
+0 -256.3207 Td
+(2824 }) 26.2111 Tj
+0 -265.8141 Td
+(2825 ) 21.8426 Tj
+0 -275.3075 Td
+(2826 int) 34.9481 Tj
+0 -284.8008 Td
+(2827 sys_wait\(void\)) 83.0018 Tj
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+(2828 {) 26.2111 Tj
+0 -303.7875 Td
+(2829 return wait\(\);) 91.7388 Tj
+0 -313.2809 Td
+(2830 }) 26.2111 Tj
+0 -322.7743 Td
+(2831 ) 21.8426 Tj
+0 -332.2676 Td
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0 -341.761 Td
-(2833 int pid;) 65.5277 Tj
-0 -351.254 Td
-(2834 ) 21.8426 Tj
-0 -360.748 Td
-(2835 if\(argint\(0, &pid\) < 0\)) 131.055 Tj
-0 -370.241 Td
-(2836 return -1;) 83.0018 Tj
-0 -379.734 Td
-(2837 return kill\(pid\);) 104.844 Tj
-0 -389.228 Td
-(2838 }) 26.2111 Tj
-0 -398.721 Td
-(2839 ) 21.8426 Tj
-0 -408.214 Td
-(2840 int) 34.9481 Tj
-0 -417.708 Td
-(2841 sys_getpid\(void\)) 91.7388 Tj
-0 -427.201 Td
-(2842 {) 26.2111 Tj
-0 -436.695 Td
-(2843 return cp->pid;) 96.1073 Tj
-0 -446.188 Td
-(2844 }) 26.2111 Tj
-0 -455.681 Td
-(2845 ) 21.8426 Tj
-0 -465.175 Td
-(2846 ) 21.8426 Tj
+(2833 sys_kill\(void\)) 83.0018 Tj
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+(2834 {) 26.2111 Tj
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+(2835 int pid;) 65.5277 Tj
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+(2836 ) 21.8426 Tj
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+(2837 if\(argint\(0, &pid\) < 0\)) 131.0554 Tj
+0 -389.2278 Td
+(2838 return -1;) 83.0018 Tj
+0 -398.7211 Td
+(2839 return kill\(pid\);) 104.8443 Tj
+0 -408.2145 Td
+(2840 }) 26.2111 Tj
+0 -417.7079 Td
+(2841 ) 21.8426 Tj
+0 -427.2012 Td
+(2842 int) 34.9481 Tj
+0 -436.6946 Td
+(2843 sys_getpid\(void\)) 91.7388 Tj
+0 -446.1879 Td
+(2844 {) 26.2111 Tj
+0 -455.6813 Td
+(2845 return cp->pid;) 96.1073 Tj
+0 -465.1747 Td
+(2846 }) 26.2111 Tj
0 -474.668 Td
(2847 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(2848 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(2849 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 28) 34.9481 Tj
Q
Q
@@ -11391,10 +11397,10 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sysproc.c Page 2) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sysproc.c Page 2) 174.7406 Tj
0 -28.4801 Td
(2850 int) 34.9481 Tj
0 -37.9735 Td
@@ -11408,94 +11414,94 @@ q
0 -75.9469 Td
(2855 ) 21.8426 Tj
0 -85.4403 Td
-(2856 if\(argint\(0, &n\) < 0\)) 122.318 Tj
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0 -94.9336 Td
(2857 return -1;) 83.0018 Tj
0 -104.427 Td
(2858 if\(\(addr = growproc\(n\)\) < 0\)) 152.898 Tj
-0 -113.92 Td
+0 -113.9203 Td
(2859 return -1;) 83.0018 Tj
-0 -123.414 Td
-(2860 setupsegs\(cp\);) 91.7388 Tj
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-(2861 return addr;) 83.0018 Tj
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-(2862 }) 26.2111 Tj
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-(2863 ) 21.8426 Tj
-0 -161.387 Td
-(2864 int) 34.9481 Tj
-0 -170.88 Td
-(2865 sys_sleep\(void\)) 87.3703 Tj
-0 -180.374 Td
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-0 -189.867 Td
-(2867 int n, ticks0;) 91.7388 Tj
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-(2868 ) 21.8426 Tj
-0 -208.854 Td
-(2869 if\(argint\(0, &n\) < 0\)) 122.318 Tj
-0 -218.347 Td
-(2870 return -1;) 83.0018 Tj
-0 -227.841 Td
-(2871 acquire\(&tickslock\);) 117.95 Tj
+0 -123.4137 Td
+(2860 return addr;) 83.0018 Tj
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+(2861 }) 26.2111 Tj
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+0 -199.3606 Td
+(2868 if\(argint\(0, &n\) < 0\)) 122.3184 Tj
+0 -208.8539 Td
+(2869 return -1;) 83.0018 Tj
+0 -218.3473 Td
+(2870 acquire\(&tickslock\);) 117.9499 Tj
+0 -227.8407 Td
+(2871 ticks0 = ticks;) 96.1073 Tj
0 -237.334 Td
-(2872 ticks0 = ticks;) 96.1073 Tj
-0 -246.827 Td
-(2873 while\(ticks - ticks0 < n\){) 144.161 Tj
-0 -256.321 Td
-(2874 if\(cp->killed\){) 104.844 Tj
-0 -265.814 Td
-(2875 release\(&tickslock\);) 135.424 Tj
-0 -275.307 Td
-(2876 return -1;) 91.7388 Tj
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-(2878 sleep\(&ticks, &tickslock\);) 152.898 Tj
-0 -303.788 Td
-(2879 }) 34.9481 Tj
-0 -313.281 Td
-(2880 release\(&tickslock\);) 117.95 Tj
-0 -322.774 Td
-(2881 return 0;) 69.8962 Tj
-0 -332.268 Td
-(2882 }) 26.2111 Tj
+(2872 while\(ticks - ticks0 < n\){) 144.161 Tj
+0 -246.8274 Td
+(2873 if\(cp->killed\){) 104.8443 Tj
+0 -256.3207 Td
+(2874 release\(&tickslock\);) 135.4239 Tj
+0 -265.8141 Td
+(2875 return -1;) 91.7388 Tj
+0 -275.3075 Td
+(2876 }) 43.6851 Tj
+0 -284.8008 Td
+(2877 sleep\(&ticks, &tickslock\);) 152.898 Tj
+0 -294.2942 Td
+(2878 }) 34.9481 Tj
+0 -303.7875 Td
+(2879 release\(&tickslock\);) 117.9499 Tj
+0 -313.2809 Td
+(2880 return 0;) 69.8962 Tj
+0 -322.7743 Td
+(2881 }) 26.2111 Tj
+0 -332.2676 Td
+(2882 ) 21.8426 Tj
0 -341.761 Td
(2883 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(2884 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(2885 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(2886 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(2887 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(2888 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(2889 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(2890 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(2891 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(2892 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(2893 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(2894 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(2895 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(2896 ) 21.8426 Tj
0 -474.668 Td
(2897 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(2898 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(2899 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 28) 34.9481 Tj
Q
Q
@@ -11524,8 +11530,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -11540,10 +11545,10 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/buf.h Page 1) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/buf.h Page 1) 157.2665 Tj
0 -28.4801 Td
(2900 struct buf {) 74.2647 Tj
0 -37.9735 Td
@@ -11553,98 +11558,98 @@ q
0 -56.9602 Td
(2903 uint sector;) 83.0018 Tj
0 -66.4535 Td
-(2904 struct buf *prev; // LRU cache list) 183.478 Tj
+(2904 struct buf *prev; // LRU cache list) 183.4776 Tj
0 -75.9469 Td
-(2905 struct buf *next;) 104.844 Tj
+(2905 struct buf *next;) 104.8443 Tj
0 -85.4403 Td
-(2906 struct buf *qnext; // disk queue) 170.372 Tj
+(2906 struct buf *qnext; // disk queue) 170.3721 Tj
0 -94.9336 Td
-(2907 uchar data[512];) 100.476 Tj
+(2907 uchar data[512];) 100.4758 Tj
0 -104.427 Td
(2908 };) 30.5796 Tj
-0 -113.92 Td
-(2909 #define B_BUSY 0x1 // buffer is locked by some process) 266.479 Tj
-0 -123.414 Td
-(2910 #define B_VALID 0x2 // buffer has been read from disk) 257.742 Tj
-0 -132.907 Td
-(2911 #define B_DIRTY 0x4 // buffer needs to be written to disk) 275.216 Tj
-0 -142.4 Td
+0 -113.9203 Td
+(2909 #define B_BUSY 0x1 // buffer is locked by some process) 266.4794 Tj
+0 -123.4137 Td
+(2910 #define B_VALID 0x2 // buffer has been read from disk) 257.7424 Tj
+0 -132.9071 Td
+(2911 #define B_DIRTY 0x4 // buffer needs to be written to disk) 275.2164 Tj
+0 -142.4004 Td
(2912 ) 21.8426 Tj
-0 -151.894 Td
+0 -151.8938 Td
(2913 ) 21.8426 Tj
-0 -161.387 Td
+0 -161.3871 Td
(2914 ) 21.8426 Tj
-0 -170.88 Td
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(2915 ) 21.8426 Tj
-0 -180.374 Td
+0 -180.3739 Td
(2916 ) 21.8426 Tj
-0 -189.867 Td
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(2917 ) 21.8426 Tj
-0 -199.361 Td
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(2918 ) 21.8426 Tj
-0 -208.854 Td
+0 -208.8539 Td
(2919 ) 21.8426 Tj
-0 -218.347 Td
+0 -218.3473 Td
(2920 ) 21.8426 Tj
-0 -227.841 Td
+0 -227.8407 Td
(2921 ) 21.8426 Tj
0 -237.334 Td
(2922 ) 21.8426 Tj
-0 -246.827 Td
+0 -246.8274 Td
(2923 ) 21.8426 Tj
-0 -256.321 Td
+0 -256.3207 Td
(2924 ) 21.8426 Tj
-0 -265.814 Td
+0 -265.8141 Td
(2925 ) 21.8426 Tj
-0 -275.307 Td
+0 -275.3075 Td
(2926 ) 21.8426 Tj
-0 -284.801 Td
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(2927 ) 21.8426 Tj
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Q
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@@ -12195,116 +12198,116 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
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(3150 // On-disk file system format.) 152.898 Tj
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-(3151 // Both the kernel and user programs use this header file.) 275.216 Tj
+(3151 // Both the kernel and user programs use this header file.) 275.2164 Tj
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(3152 ) 21.8426 Tj
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+(3153 // Block 0 is unused.) 113.5814 Tj
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+(3154 // Block 1 is super block.) 135.4239 Tj
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+(3155 // Inodes start at block 2.) 139.7925 Tj
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(3156 ) 21.8426 Tj
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-0 -123.414 Td
-(3160 struct superblock {) 104.844 Tj
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+(3159 // File system super block) 135.4239 Tj
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+(3160 struct superblock {) 104.8443 Tj
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(3161 uint size; // Size of file system image \(blocks\
-\)) 275.216 Tj
-0 -142.4 Td
-(3162 uint nblocks; // Number of data blocks) 218.426 Tj
-0 -151.894 Td
-(3163 uint ninodes; // Number of inodes.) 200.952 Tj
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+\)) 275.2164 Tj
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+(3162 uint nblocks; // Number of data blocks) 218.4257 Tj
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+(3163 uint ninodes; // Number of inodes.) 200.9517 Tj
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(3164 };) 30.5796 Tj
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(3165 ) 21.8426 Tj
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-(3166 #define NADDRS \(NDIRECT+1\)) 135.424 Tj
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-(3167 #define NDIRECT 12) 100.476 Tj
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-(3168 #define INDIRECT 12) 104.844 Tj
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-(3169 #define NINDIRECT \(BSIZE / sizeof\(uint\)\)) 196.583 Tj
-0 -218.347 Td
-(3170 #define MAXFILE \(NDIRECT + NINDIRECT\)) 187.846 Tj
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+(3166 #define NADDRS \(NDIRECT+1\)) 135.4239 Tj
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+(3167 #define NDIRECT 12) 100.4758 Tj
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+(3168 #define INDIRECT 12) 104.8443 Tj
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+(3169 #define NINDIRECT \(BSIZE / sizeof\(uint\)\)) 196.5831 Tj
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+(3170 #define MAXFILE \(NDIRECT + NINDIRECT\)) 187.8461 Tj
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-(3172 // On-disk inode structure) 135.424 Tj
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+(3172 // On-disk inode structure) 135.4239 Tj
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(3173 struct dinode {) 87.3703 Tj
-0 -256.321 Td
-(3174 short type; // File type) 179.109 Tj
-0 -265.814 Td
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+(3174 short type; // File type) 179.1091 Tj
+0 -265.8141 Td
(3175 short major; // Major device number \(T_DEV onl\
-y\)) 279.585 Tj
-0 -275.307 Td
+y\)) 279.5849 Tj
+0 -275.3075 Td
(3176 short minor; // Minor device number \(T_DEV onl\
-y\)) 279.585 Tj
-0 -284.801 Td
+y\)) 279.5849 Tj
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(3177 short nlink; // Number of links to inode in fil\
-e system) 310.165 Tj
-0 -294.294 Td
-(3178 uint size; // Size of file \(bytes\)) 227.163 Tj
-0 -303.788 Td
-(3179 uint addrs[NADDRS]; // Data block addresses) 227.163 Tj
-0 -313.281 Td
+e system) 310.1645 Tj
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+(3178 uint size; // Size of file \(bytes\)) 227.1628 Tj
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(3180 };) 30.5796 Tj
-0 -322.774 Td
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(3181 ) 21.8426 Tj
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-(3182 #define T_DIR 1 // Directory) 157.267 Tj
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+(3182 #define T_DIR 1 // Directory) 157.2665 Tj
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-(3183 #define T_FILE 2 // File) 135.424 Tj
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-(3184 #define T_DEV 3 // Special device) 179.109 Tj
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+(3183 #define T_FILE 2 // File) 135.4239 Tj
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+(3184 #define T_DEV 3 // Special device) 179.1091 Tj
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(3185 ) 21.8426 Tj
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-(3186 // Inodes per block.) 109.213 Tj
-0 -379.734 Td
-(3187 #define IPB \(BSIZE / sizeof\(struct dinode\)\)) 253.374 Tj
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+(3186 // Inodes per block.) 109.2129 Tj
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+(3187 #define IPB \(BSIZE / sizeof\(struct dinode\)\)) 253.3738 Tj
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(3188 ) 21.8426 Tj
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-0 -408.214 Td
-(3190 #define IBLOCK\(i\) \(\(i\) / IPB + 2\)) 183.478 Tj
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+(3189 // Block containing inode i) 139.7925 Tj
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+(3190 #define IBLOCK\(i\) \(\(i\) / IPB + 2\)) 183.4776 Tj
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(3191 ) 21.8426 Tj
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-(3192 // Bitmap bits per block) 126.687 Tj
-0 -436.695 Td
-(3193 #define BPB \(BSIZE*8\)) 157.267 Tj
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+(3192 // Bitmap bits per block) 126.6869 Tj
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+(3193 #define BPB \(BSIZE*8\)) 157.2665 Tj
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(3194 ) 21.8426 Tj
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-(3195 // Block containing bit for block b) 174.741 Tj
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+(3195 // Block containing bit for block b) 174.7406 Tj
+0 -465.1747 Td
(3196 #define BBLOCK\(b, ninodes\) \(b/BPB + \(ninodes\)/IPB + 3\
-\)) 257.742 Tj
+\)) 257.7424 Tj
0 -474.668 Td
(3197 ) 21.8426 Tj
-0 -484.161 Td
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(3198 ) 21.8426 Tj
-0 -493.655 Td
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(3199 ) 21.8426 Tj
-0 -522.135 Td
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(Sheet 31) 34.9481 Tj
Q
Q
@@ -12333,8 +12336,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -12349,13 +12351,13 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/fs.h Page 2) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/fs.h Page 2) 152.898 Tj
0 -28.4801 Td
(3200 // Directory is a file containing a sequence of dirent str\
-uctures.) 310.165 Tj
+uctures.) 310.1645 Tj
0 -37.9735 Td
(3201 #define DIRSIZ 14) 96.1073 Tj
0 -47.4668 Td
@@ -12365,96 +12367,96 @@ uctures.) 310.165 Tj
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(3204 ushort inum;) 83.0018 Tj
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-(3205 char name[DIRSIZ];) 109.213 Tj
+(3205 char name[DIRSIZ];) 109.2129 Tj
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(3206 };) 30.5796 Tj
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(3222 ) 21.8426 Tj
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(3225 ) 21.8426 Tj
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(3226 ) 21.8426 Tj
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(3227 ) 21.8426 Tj
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(3228 ) 21.8426 Tj
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(3229 ) 21.8426 Tj
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(3230 ) 21.8426 Tj
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(3231 ) 21.8426 Tj
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(3234 ) 21.8426 Tj
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(3235 ) 21.8426 Tj
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(3236 ) 21.8426 Tj
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(3237 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(3238 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(3239 ) 21.8426 Tj
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+0 -408.2145 Td
(3240 ) 21.8426 Tj
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+0 -417.7079 Td
(3241 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(3242 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(3243 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(3244 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(3245 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(3246 ) 21.8426 Tj
0 -474.668 Td
(3247 ) 21.8426 Tj
-0 -484.161 Td
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(3248 ) 21.8426 Tj
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(3249 ) 21.8426 Tj
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(Sheet 32) 34.9481 Tj
Q
Q
@@ -12469,10 +12471,10 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/fsvar.h Page 1) 166.004 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/fsvar.h Page 1) 166.0035 Tj
0 -28.4801 Td
(3250 // in-core file system types) 144.161 Tj
0 -37.9735 Td
@@ -12480,100 +12482,100 @@ q
0 -47.4668 Td
(3252 struct inode {) 83.0018 Tj
0 -56.9602 Td
-(3253 uint dev; // Device number) 187.846 Tj
+(3253 uint dev; // Device number) 187.8461 Tj
0 -66.4535 Td
-(3254 uint inum; // Inode number) 183.478 Tj
+(3254 uint inum; // Inode number) 183.4776 Tj
0 -75.9469 Td
-(3255 int ref; // Reference count) 196.583 Tj
+(3255 int ref; // Reference count) 196.5831 Tj
0 -85.4403 Td
-(3256 int flags; // I_BUSY, I_VALID) 196.583 Tj
+(3256 int flags; // I_BUSY, I_VALID) 196.5831 Tj
0 -94.9336 Td
(3257 ) 21.8426 Tj
0 -104.427 Td
-(3258 short type; // copy of disk inode) 209.689 Tj
-0 -113.92 Td
+(3258 short type; // copy of disk inode) 209.6887 Tj
+0 -113.9203 Td
(3259 short major;) 83.0018 Tj
-0 -123.414 Td
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(3260 short minor;) 83.0018 Tj
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(3261 short nlink;) 83.0018 Tj
-0 -142.4 Td
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(3262 uint size;) 74.2647 Tj
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-(3263 uint addrs[NADDRS];) 113.581 Tj
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(3264 };) 30.5796 Tj
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(3265 ) 21.8426 Tj
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-(3267 #define I_VALID 0x2) 104.844 Tj
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(3286 ) 21.8426 Tj
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(3290 ) 21.8426 Tj
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(3291 ) 21.8426 Tj
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(3296 ) 21.8426 Tj
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(3297 ) 21.8426 Tj
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(3298 ) 21.8426 Tj
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(3299 ) 21.8426 Tj
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(Sheet 32) 34.9481 Tj
Q
Q
@@ -12602,8 +12604,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -12618,20 +12619,20 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/ide.c Page 1) 157.267 Tj
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+(Sep 3 10:05 2008 xv6/ide.c Page 1) 157.2665 Tj
0 -28.4801 Td
-(3300 // Simple PIO-based \(non-DMA\) IDE driver code.) 222.794 Tj
+(3300 // Simple PIO-based \(non-DMA\) IDE driver code.) 222.7942 Tj
0 -37.9735 Td
(3301 ) 21.8426 Tj
0 -47.4668 Td
-(3302 #include "types.h") 100.476 Tj
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(3303 #include "defs.h") 96.1073 Tj
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-(3304 #include "param.h") 100.476 Tj
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(3305 #include "mmu.h") 91.7388 Tj
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@@ -12639,93 +12640,93 @@ q
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(3307 #include "x86.h") 91.7388 Tj
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-(3309 #include "spinlock.h") 113.581 Tj
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(3310 #include "buf.h") 91.7388 Tj
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(3311 ) 21.8426 Tj
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-(3312 #define IDE_BSY 0x80) 135.424 Tj
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-(3313 #define IDE_DRDY 0x40) 135.424 Tj
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-(3314 #define IDE_DF 0x20) 135.424 Tj
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-(3315 #define IDE_ERR 0x01) 135.424 Tj
-0 -180.374 Td
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+(3312 #define IDE_BSY 0x80) 135.4239 Tj
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+(3315 #define IDE_ERR 0x01) 135.4239 Tj
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(3316 ) 21.8426 Tj
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-(3317 #define IDE_CMD_READ 0x20) 135.424 Tj
-0 -199.361 Td
-(3318 #define IDE_CMD_WRITE 0x30) 135.424 Tj
-0 -208.854 Td
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+(3317 #define IDE_CMD_READ 0x20) 135.4239 Tj
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+(3318 #define IDE_CMD_WRITE 0x30) 135.4239 Tj
+0 -208.8539 Td
(3319 ) 21.8426 Tj
-0 -218.347 Td
+0 -218.3473 Td
(3320 // ide_queue points to the buf now being read/written to t\
-he disk.) 310.165 Tj
-0 -227.841 Td
+he disk.) 310.1645 Tj
+0 -227.8407 Td
(3321 // ide_queue->qnext points to the next buf to be processed\
-.) 279.585 Tj
+.) 279.5849 Tj
0 -237.334 Td
-(3322 // You must hold ide_lock while manipulating queue.) 244.637 Tj
-0 -246.827 Td
+(3322 // You must hold ide_lock while manipulating queue.) 244.6368 Tj
+0 -246.8274 Td
(3323 ) 21.8426 Tj
-0 -256.321 Td
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(3324 static struct spinlock ide_lock;) 161.635 Tj
-0 -265.814 Td
-(3325 static struct buf *ide_queue;) 148.529 Tj
-0 -275.307 Td
+0 -265.8141 Td
+(3325 static struct buf *ide_queue;) 148.5295 Tj
+0 -275.3075 Td
(3326 ) 21.8426 Tj
-0 -284.801 Td
-(3327 static int disk_1_present;) 135.424 Tj
-0 -294.294 Td
+0 -284.8008 Td
+(3327 static int disk_1_present;) 135.4239 Tj
+0 -294.2942 Td
(3328 static void ide_start_request\(\);) 161.635 Tj
-0 -303.788 Td
+0 -303.7875 Td
(3329 ) 21.8426 Tj
-0 -313.281 Td
-(3330 // Wait for IDE disk to become ready.) 183.478 Tj
-0 -322.774 Td
+0 -313.2809 Td
+(3330 // Wait for IDE disk to become ready.) 183.4776 Tj
+0 -322.7743 Td
(3331 static int) 65.5277 Tj
-0 -332.268 Td
-(3332 ide_wait_ready\(int check_error\)) 157.267 Tj
+0 -332.2676 Td
+(3332 ide_wait_ready\(int check_error\)) 157.2665 Tj
0 -341.761 Td
(3333 {) 26.2111 Tj
-0 -351.254 Td
+0 -351.2543 Td
(3334 int r;) 56.7907 Tj
-0 -360.748 Td
+0 -360.7477 Td
(3335 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(3336 while\(\(\(r = inb\(0x1f7\)\) & IDE_BSY\) || !\(r & IDE_\
-DRDY\)\)) 266.479 Tj
-0 -379.734 Td
+DRDY\)\)) 266.4794 Tj
+0 -379.7344 Td
(3337 ;) 43.6851 Tj
-0 -389.228 Td
-(3338 if\(check_error && \(r & \(IDE_DF|IDE_ERR\)\) != 0\)) 231.531 Tj
-0 -398.721 Td
+0 -389.2278 Td
+(3338 if\(check_error && \(r & \(IDE_DF|IDE_ERR\)\) != 0\)) 231.5313 Tj
+0 -398.7211 Td
(3339 return -1;) 83.0018 Tj
-0 -408.214 Td
+0 -408.2145 Td
(3340 return 0;) 69.8962 Tj
-0 -417.708 Td
+0 -417.7079 Td
(3341 }) 26.2111 Tj
-0 -427.201 Td
+0 -427.2012 Td
(3342 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(3343 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(3344 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(3345 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(3346 ) 21.8426 Tj
0 -474.668 Td
(3347 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(3348 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(3349 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 33) 34.9481 Tj
Q
Q
@@ -12740,10 +12741,10 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/ide.c Page 2) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/ide.c Page 2) 157.2665 Tj
0 -28.4801 Td
(3350 void) 39.3166 Tj
0 -37.9735 Td
@@ -12755,97 +12756,97 @@ q
0 -66.4535 Td
(3354 ) 21.8426 Tj
0 -75.9469 Td
-(3355 initlock\(&ide_lock, "ide"\);) 148.529 Tj
+(3355 initlock\(&ide_lock, "ide"\);) 148.5295 Tj
0 -85.4403 Td
-(3356 pic_enable\(IRQ_IDE\);) 117.95 Tj
+(3356 pic_enable\(IRQ_IDE\);) 117.9499 Tj
0 -94.9336 Td
-(3357 ioapic_enable\(IRQ_IDE, ncpu - 1\);) 174.741 Tj
+(3357 ioapic_enable\(IRQ_IDE, ncpu - 1\);) 174.7406 Tj
0 -104.427 Td
-(3358 ide_wait_ready\(0\);) 109.213 Tj
-0 -113.92 Td
+(3358 ide_wait_ready\(0\);) 109.2129 Tj
+0 -113.9203 Td
(3359 ) 21.8426 Tj
-0 -123.414 Td
-(3360 // Check if disk 1 is present) 157.267 Tj
-0 -132.907 Td
-(3361 outb\(0x1f6, 0xe0 | \(1<<4\)\);) 148.529 Tj
-0 -142.4 Td
-(3362 for\(i=0; i<1000; i++\){) 126.687 Tj
-0 -151.894 Td
-(3363 if\(inb\(0x1f7\) != 0\){) 126.687 Tj
-0 -161.387 Td
-(3364 disk_1_present = 1;) 131.055 Tj
-0 -170.88 Td
+0 -123.4137 Td
+(3360 // Check if disk 1 is present) 157.2665 Tj
+0 -132.9071 Td
+(3361 outb\(0x1f6, 0xe0 | \(1<<4\)\);) 148.5295 Tj
+0 -142.4004 Td
+(3362 for\(i=0; i<1000; i++\){) 126.6869 Tj
+0 -151.8938 Td
+(3363 if\(inb\(0x1f7\) != 0\){) 126.6869 Tj
+0 -161.3871 Td
+(3364 disk_1_present = 1;) 131.0554 Tj
+0 -170.8805 Td
(3365 break;) 74.2647 Tj
-0 -180.374 Td
+0 -180.3739 Td
(3366 }) 43.6851 Tj
-0 -189.867 Td
+0 -189.8672 Td
(3367 }) 34.9481 Tj
-0 -199.361 Td
+0 -199.3606 Td
(3368 ) 21.8426 Tj
-0 -208.854 Td
-(3369 // Switch back to disk 0.) 139.792 Tj
-0 -218.347 Td
-(3370 outb\(0x1f6, 0xe0 | \(0<<4\)\);) 148.529 Tj
-0 -227.841 Td
+0 -208.8539 Td
+(3369 // Switch back to disk 0.) 139.7925 Tj
+0 -218.3473 Td
+(3370 outb\(0x1f6, 0xe0 | \(0<<4\)\);) 148.5295 Tj
+0 -227.8407 Td
(3371 }) 26.2111 Tj
0 -237.334 Td
(3372 ) 21.8426 Tj
-0 -246.827 Td
-(3373 // Start the request for b. Caller must hold ide_lock.) 262.111 Tj
-0 -256.321 Td
+0 -246.8274 Td
+(3373 // Start the request for b. Caller must hold ide_lock.) 262.1109 Tj
+0 -256.3207 Td
(3374 static void) 69.8962 Tj
-0 -265.814 Td
+0 -265.8141 Td
(3375 ide_start_request\(struct buf *b\)) 161.635 Tj
-0 -275.307 Td
+0 -275.3075 Td
(3376 {) 26.2111 Tj
-0 -284.801 Td
+0 -284.8008 Td
(3377 if\(b == 0\)) 74.2647 Tj
-0 -294.294 Td
-(3378 panic\("ide_start_request"\);) 157.267 Tj
-0 -303.788 Td
+0 -294.2942 Td
+(3378 panic\("ide_start_request"\);) 157.2665 Tj
+0 -303.7875 Td
(3379 ) 21.8426 Tj
-0 -313.281 Td
-(3380 ide_wait_ready\(0\);) 109.213 Tj
-0 -322.774 Td
-(3381 outb\(0x3f6, 0\); // generate interrupt) 196.583 Tj
-0 -332.268 Td
-(3382 outb\(0x1f2, 1\); // number of sectors) 192.215 Tj
+0 -313.2809 Td
+(3380 ide_wait_ready\(0\);) 109.2129 Tj
+0 -322.7743 Td
+(3381 outb\(0x3f6, 0\); // generate interrupt) 196.5831 Tj
+0 -332.2676 Td
+(3382 outb\(0x1f2, 1\); // number of sectors) 192.2146 Tj
0 -341.761 Td
(3383 outb\(0x1f3, b->sector & 0xff\);) 161.635 Tj
-0 -351.254 Td
-(3384 outb\(0x1f4, \(b->sector >> 8\) & 0xff\);) 192.215 Tj
-0 -360.748 Td
-(3385 outb\(0x1f5, \(b->sector >> 16\) & 0xff\);) 196.583 Tj
-0 -370.241 Td
+0 -351.2543 Td
+(3384 outb\(0x1f4, \(b->sector >> 8\) & 0xff\);) 192.2146 Tj
+0 -360.7477 Td
+(3385 outb\(0x1f5, \(b->sector >> 16\) & 0xff\);) 196.5831 Tj
+0 -370.2411 Td
(3386 outb\(0x1f6, 0xe0 | \(\(b->dev&1\)<<4\) | \(\(b->sector>\
>24\)&0x0f\)\);) 297.059 Tj
-0 -379.734 Td
-(3387 if\(b->flags & B_DIRTY\){) 131.055 Tj
-0 -389.228 Td
-(3388 outb\(0x1f7, IDE_CMD_WRITE\);) 157.267 Tj
-0 -398.721 Td
-(3389 outsl\(0x1f0, b->data, 512/4\);) 166.004 Tj
-0 -408.214 Td
+0 -379.7344 Td
+(3387 if\(b->flags & B_DIRTY\){) 131.0554 Tj
+0 -389.2278 Td
+(3388 outb\(0x1f7, IDE_CMD_WRITE\);) 157.2665 Tj
+0 -398.7211 Td
+(3389 outsl\(0x1f0, b->data, 512/4\);) 166.0035 Tj
+0 -408.2145 Td
(3390 } else {) 65.5277 Tj
-0 -417.708 Td
+0 -417.7079 Td
(3391 outb\(0x1f7, IDE_CMD_READ\);) 152.898 Tj
-0 -427.201 Td
+0 -427.2012 Td
(3392 }) 34.9481 Tj
-0 -436.695 Td
+0 -436.6946 Td
(3393 }) 26.2111 Tj
-0 -446.188 Td
+0 -446.1879 Td
(3394 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(3395 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(3396 ) 21.8426 Tj
0 -474.668 Td
(3397 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(3398 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(3399 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 33) 34.9481 Tj
Q
Q
@@ -12874,8 +12875,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -12890,12 +12890,12 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/ide.c Page 3) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/ide.c Page 3) 157.2665 Tj
0 -28.4801 Td
-(3400 // Interrupt handler.) 113.581 Tj
+(3400 // Interrupt handler.) 113.5814 Tj
0 -37.9735 Td
(3401 void) 39.3166 Tj
0 -47.4668 Td
@@ -12907,94 +12907,94 @@ q
0 -75.9469 Td
(3405 ) 21.8426 Tj
0 -85.4403 Td
-(3406 acquire\(&ide_lock\);) 113.581 Tj
+(3406 acquire\(&ide_lock\);) 113.5814 Tj
0 -94.9336 Td
-(3407 if\(\(b = ide_queue\) == 0\){) 139.792 Tj
+(3407 if\(\(b = ide_queue\) == 0\){) 139.7925 Tj
0 -104.427 Td
-(3408 cprintf\("stray ide interrupt\\n"\);) 183.478 Tj
-0 -113.92 Td
-(3409 release\(&ide_lock\);) 122.318 Tj
-0 -123.414 Td
-(3410 return;) 69.8962 Tj
-0 -132.907 Td
-(3411 }) 34.9481 Tj
-0 -142.4 Td
-(3412 ) 21.8426 Tj
-0 -151.894 Td
-(3413 // Read data if needed.) 131.055 Tj
-0 -161.387 Td
-(3414 if\(!\(b->flags & B_DIRTY\) && ide_wait_ready\(1\) >= 0\)) 253.374 Tj
-0 -170.88 Td
-(3415 insl\(0x1f0, b->data, 512/4\);) 161.635 Tj
-0 -180.374 Td
-(3416 ) 21.8426 Tj
-0 -189.867 Td
-(3417 // Wake process waiting for this buf.) 192.215 Tj
-0 -199.361 Td
-(3418 b->flags |= B_VALID;) 117.95 Tj
-0 -208.854 Td
-(3419 b->flags &= ~B_DIRTY;) 122.318 Tj
-0 -218.347 Td
-(3420 wakeup\(b\);) 74.2647 Tj
-0 -227.841 Td
-(3421 ) 21.8426 Tj
+(3408 release\(&ide_lock\);) 122.3184 Tj
+0 -113.9203 Td
+(3409 return;) 69.8962 Tj
+0 -123.4137 Td
+(3410 }) 34.9481 Tj
+0 -132.9071 Td
+(3411 ) 21.8426 Tj
+0 -142.4004 Td
+(3412 // Read data if needed.) 131.0554 Tj
+0 -151.8938 Td
+(3413 if\(!\(b->flags & B_DIRTY\) && ide_wait_ready\(1\) >= 0\)) 253.3738 Tj
+0 -161.3871 Td
+(3414 insl\(0x1f0, b->data, 512/4\);) 161.635 Tj
+0 -170.8805 Td
+(3415 ) 21.8426 Tj
+0 -180.3739 Td
+(3416 // Wake process waiting for this buf.) 192.2146 Tj
+0 -189.8672 Td
+(3417 b->flags |= B_VALID;) 117.9499 Tj
+0 -199.3606 Td
+(3418 b->flags &= ~B_DIRTY;) 122.3184 Tj
+0 -208.8539 Td
+(3419 wakeup\(b\);) 74.2647 Tj
+0 -218.3473 Td
+(3420 ) 21.8426 Tj
+0 -227.8407 Td
+(3421 // Start disk on next buf in queue.) 183.4776 Tj
0 -237.334 Td
-(3422 // Start disk on next buf in queue.) 183.478 Tj
-0 -246.827 Td
-(3423 if\(\(ide_queue = b->qnext\) != 0\)) 166.004 Tj
-0 -256.321 Td
-(3424 ide_start_request\(ide_queue\);) 166.004 Tj
-0 -265.814 Td
-(3425 ) 21.8426 Tj
-0 -275.307 Td
-(3426 release\(&ide_lock\);) 113.581 Tj
-0 -284.801 Td
-(3427 }) 26.2111 Tj
-0 -294.294 Td
+(3422 if\(\(ide_queue = b->qnext\) != 0\)) 166.0035 Tj
+0 -246.8274 Td
+(3423 ide_start_request\(ide_queue\);) 166.0035 Tj
+0 -256.3207 Td
+(3424 ) 21.8426 Tj
+0 -265.8141 Td
+(3425 release\(&ide_lock\);) 113.5814 Tj
+0 -275.3075 Td
+(3426 }) 26.2111 Tj
+0 -284.8008 Td
+(3427 ) 21.8426 Tj
+0 -294.2942 Td
(3428 ) 21.8426 Tj
-0 -303.788 Td
+0 -303.7875 Td
(3429 ) 21.8426 Tj
-0 -313.281 Td
+0 -313.2809 Td
(3430 ) 21.8426 Tj
-0 -322.774 Td
+0 -322.7743 Td
(3431 ) 21.8426 Tj
-0 -332.268 Td
+0 -332.2676 Td
(3432 ) 21.8426 Tj
0 -341.761 Td
(3433 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(3434 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(3435 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(3436 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(3437 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(3438 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(3439 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(3440 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(3441 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(3442 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(3443 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(3444 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(3445 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(3446 ) 21.8426 Tj
0 -474.668 Td
(3447 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(3448 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(3449 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 34) 34.9481 Tj
Q
Q
@@ -13009,113 +13009,113 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/ide.c Page 4) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/ide.c Page 4) 157.2665 Tj
0 -28.4801 Td
-(3450 // Sync buf with disk.) 117.95 Tj
+(3450 // Sync buf with disk.) 117.9499 Tj
0 -37.9735 Td
(3451 // If B_DIRTY is set, write buf to disk, clear B_DIRTY, se\
-t B_VALID.) 318.902 Tj
+t B_VALID.) 318.9016 Tj
0 -47.4668 Td
(3452 // Else if B_VALID is not set, read buf from disk, set B_V\
ALID.) 297.059 Tj
0 -56.9602 Td
(3453 void) 39.3166 Tj
0 -66.4535 Td
-(3454 ide_rw\(struct buf *b\)) 113.581 Tj
+(3454 ide_rw\(struct buf *b\)) 113.5814 Tj
0 -75.9469 Td
(3455 {) 26.2111 Tj
0 -85.4403 Td
-(3456 struct buf **pp;) 100.476 Tj
+(3456 struct buf **pp;) 100.4758 Tj
0 -94.9336 Td
(3457 ) 21.8426 Tj
0 -104.427 Td
-(3458 if\(!\(b->flags & B_BUSY\)\)) 135.424 Tj
-0 -113.92 Td
-(3459 panic\("ide_rw: buf not busy"\);) 170.372 Tj
-0 -123.414 Td
-(3460 if\(\(b->flags & \(B_VALID|B_DIRTY\)\) == B_VALID\)) 227.163 Tj
-0 -132.907 Td
-(3461 panic\("ide_rw: nothing to do"\);) 174.741 Tj
-0 -142.4 Td
-(3462 if\(b->dev != 0 && !disk_1_present\)) 179.109 Tj
-0 -151.894 Td
-(3463 panic\("ide disk 1 not present"\);) 179.109 Tj
-0 -161.387 Td
+(3458 if\(!\(b->flags & B_BUSY\)\)) 135.4239 Tj
+0 -113.9203 Td
+(3459 panic\("ide_rw: buf not busy"\);) 170.3721 Tj
+0 -123.4137 Td
+(3460 if\(\(b->flags & \(B_VALID|B_DIRTY\)\) == B_VALID\)) 227.1628 Tj
+0 -132.9071 Td
+(3461 panic\("ide_rw: nothing to do"\);) 174.7406 Tj
+0 -142.4004 Td
+(3462 if\(b->dev != 0 && !disk_1_present\)) 179.1091 Tj
+0 -151.8938 Td
+(3463 panic\("ide disk 1 not present"\);) 179.1091 Tj
+0 -161.3871 Td
(3464 ) 21.8426 Tj
-0 -170.88 Td
-(3465 acquire\(&ide_lock\);) 113.581 Tj
-0 -180.374 Td
+0 -170.8805 Td
+(3465 acquire\(&ide_lock\);) 113.5814 Tj
+0 -180.3739 Td
(3466 ) 21.8426 Tj
-0 -189.867 Td
-(3467 // Append b to ide_queue.) 139.792 Tj
-0 -199.361 Td
+0 -189.8672 Td
+(3467 // Append b to ide_queue.) 139.7925 Tj
+0 -199.3606 Td
(3468 b->qnext = 0;) 87.3703 Tj
-0 -208.854 Td
-(3469 for\(pp=&ide_queue; *pp; pp=&\(*pp\)->qnext\)) 209.689 Tj
-0 -218.347 Td
+0 -208.8539 Td
+(3469 for\(pp=&ide_queue; *pp; pp=&\(*pp\)->qnext\)) 209.6887 Tj
+0 -218.3473 Td
(3470 ;) 43.6851 Tj
-0 -227.841 Td
+0 -227.8407 Td
(3471 *pp = b;) 65.5277 Tj
0 -237.334 Td
(3472 ) 21.8426 Tj
-0 -246.827 Td
-(3473 // Start disk if necessary.) 148.529 Tj
-0 -256.321 Td
-(3474 if\(ide_queue == b\)) 109.213 Tj
-0 -265.814 Td
-(3475 ide_start_request\(b\);) 131.055 Tj
-0 -275.307 Td
+0 -246.8274 Td
+(3473 // Start disk if necessary.) 148.5295 Tj
+0 -256.3207 Td
+(3474 if\(ide_queue == b\)) 109.2129 Tj
+0 -265.8141 Td
+(3475 ide_start_request\(b\);) 131.0554 Tj
+0 -275.3075 Td
(3476 ) 21.8426 Tj
-0 -284.801 Td
+0 -284.8008 Td
(3477 // Wait for request to finish.) 161.635 Tj
-0 -294.294 Td
-(3478 // Assuming will not sleep too long: ignore cp->killed.) 270.848 Tj
-0 -303.788 Td
-(3479 while\(\(b->flags & \(B_VALID|B_DIRTY\)\) != B_VALID\)) 240.268 Tj
-0 -313.281 Td
-(3480 sleep\(b, &ide_lock\);) 126.687 Tj
-0 -322.774 Td
+0 -294.2942 Td
+(3478 // Assuming will not sleep too long: ignore cp->killed.) 270.8479 Tj
+0 -303.7875 Td
+(3479 while\(\(b->flags & \(B_VALID|B_DIRTY\)\) != B_VALID\)) 240.2683 Tj
+0 -313.2809 Td
+(3480 sleep\(b, &ide_lock\);) 126.6869 Tj
+0 -322.7743 Td
(3481 ) 21.8426 Tj
-0 -332.268 Td
-(3482 release\(&ide_lock\);) 113.581 Tj
+0 -332.2676 Td
+(3482 release\(&ide_lock\);) 113.5814 Tj
0 -341.761 Td
(3483 }) 26.2111 Tj
-0 -351.254 Td
+0 -351.2543 Td
(3484 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(3485 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(3486 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(3487 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(3488 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(3489 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(3490 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(3491 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(3492 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(3493 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(3494 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(3495 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(3496 ) 21.8426 Tj
0 -474.668 Td
(3497 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(3498 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(3499 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 34) 34.9481 Tj
Q
Q
@@ -13144,8 +13144,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -13160,17 +13159,17 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/bio.c Page 1) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/bio.c Page 1) 157.2665 Tj
0 -28.4801 Td
(3500 // Buffer cache.) 91.7388 Tj
0 -37.9735 Td
(3501 //) 30.5796 Tj
0 -47.4668 Td
(3502 // The buffer cache is a linked list of buf structures hol\
-ding) 292.69 Tj
+ding) 292.6905 Tj
0 -56.9602 Td
(3503 // cached copies of disk block contents. Caching disk blo\
cks) 288.322 Tj
@@ -13179,7 +13178,7 @@ cks) 288.322 Tj
vides) 297.059 Tj
0 -75.9469 Td
(3505 // a synchronization point for disk blocks used by multipl\
-e processes.) 327.639 Tj
+e processes.) 327.6386 Tj
0 -85.4403 Td
(3506 //) 30.5796 Tj
0 -94.9336 Td
@@ -13187,90 +13186,90 @@ e processes.) 327.639 Tj
0 -104.427 Td
(3508 // * To get a buffer for a particular disk block, call bre\
ad.) 288.322 Tj
-0 -113.92 Td
+0 -113.9203 Td
(3509 // * After changing buffer data, call bwrite to flush it t\
o disk.) 305.796 Tj
-0 -123.414 Td
-(3510 // * When done with the buffer, call brelse.) 214.057 Tj
-0 -132.907 Td
-(3511 // * Do not use the buffer after calling brelse.) 231.531 Tj
-0 -142.4 Td
-(3512 // * Only one process at a time can use a buffer,) 235.9 Tj
-0 -151.894 Td
-(3513 // so do not keep them longer than necessary.) 235.9 Tj
-0 -161.387 Td
+0 -123.4137 Td
+(3510 // * When done with the buffer, call brelse.) 214.0572 Tj
+0 -132.9071 Td
+(3511 // * Do not use the buffer after calling brelse.) 231.5313 Tj
+0 -142.4004 Td
+(3512 // * Only one process at a time can use a buffer,) 235.8998 Tj
+0 -151.8938 Td
+(3513 // so do not keep them longer than necessary.) 235.8998 Tj
+0 -161.3871 Td
(3514 //) 30.5796 Tj
-0 -170.88 Td
-(3515 // The implementation uses three state flags internally:) 266.479 Tj
-0 -180.374 Td
-(3516 // * B_BUSY: the block has been returned from bread) 244.637 Tj
-0 -189.867 Td
-(3517 // and has not been passed back to brelse.) 222.794 Tj
-0 -199.361 Td
-(3518 // * B_VALID: the buffer data has been initialized) 240.268 Tj
-0 -208.854 Td
-(3519 // with the associated disk block contents.) 227.163 Tj
-0 -218.347 Td
-(3520 // * B_DIRTY: the buffer data has been modified) 227.163 Tj
-0 -227.841 Td
-(3521 // and needs to be written to disk.) 192.215 Tj
+0 -170.8805 Td
+(3515 // The implementation uses three state flags internally:) 266.4794 Tj
+0 -180.3739 Td
+(3516 // * B_BUSY: the block has been returned from bread) 244.6368 Tj
+0 -189.8672 Td
+(3517 // and has not been passed back to brelse.) 222.7942 Tj
+0 -199.3606 Td
+(3518 // * B_VALID: the buffer data has been initialized) 240.2683 Tj
+0 -208.8539 Td
+(3519 // with the associated disk block contents.) 227.1628 Tj
+0 -218.3473 Td
+(3520 // * B_DIRTY: the buffer data has been modified) 227.1628 Tj
+0 -227.8407 Td
+(3521 // and needs to be written to disk.) 192.2146 Tj
0 -237.334 Td
(3522 ) 21.8426 Tj
-0 -246.827 Td
-(3523 #include "types.h") 100.476 Tj
-0 -256.321 Td
+0 -246.8274 Td
+(3523 #include "types.h") 100.4758 Tj
+0 -256.3207 Td
(3524 #include "defs.h") 96.1073 Tj
-0 -265.814 Td
-(3525 #include "param.h") 100.476 Tj
-0 -275.307 Td
-(3526 #include "spinlock.h") 113.581 Tj
-0 -284.801 Td
+0 -265.8141 Td
+(3525 #include "param.h") 100.4758 Tj
+0 -275.3075 Td
+(3526 #include "spinlock.h") 113.5814 Tj
+0 -284.8008 Td
(3527 #include "buf.h") 91.7388 Tj
-0 -294.294 Td
+0 -294.2942 Td
(3528 ) 21.8426 Tj
-0 -303.788 Td
-(3529 struct buf buf[NBUF];) 113.581 Tj
-0 -313.281 Td
-(3530 struct spinlock buf_table_lock;) 157.267 Tj
-0 -322.774 Td
+0 -303.7875 Td
+(3529 struct buf buf[NBUF];) 113.5814 Tj
+0 -313.2809 Td
+(3530 struct spinlock buf_table_lock;) 157.2665 Tj
+0 -322.7743 Td
(3531 ) 21.8426 Tj
-0 -332.268 Td
-(3532 // Linked list of all buffers, through prev/next.) 235.9 Tj
+0 -332.2676 Td
+(3532 // Linked list of all buffers, through prev/next.) 235.8998 Tj
0 -341.761 Td
-(3533 // bufhead->next is most recently used.) 192.215 Tj
-0 -351.254 Td
-(3534 // bufhead->tail is least recently used.) 196.583 Tj
-0 -360.748 Td
-(3535 struct buf bufhead;) 104.844 Tj
-0 -370.241 Td
+(3533 // bufhead->next is most recently used.) 192.2146 Tj
+0 -351.2543 Td
+(3534 // bufhead->tail is least recently used.) 196.5831 Tj
+0 -360.7477 Td
+(3535 struct buf bufhead;) 104.8443 Tj
+0 -370.2411 Td
(3536 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(3537 void) 39.3166 Tj
-0 -389.228 Td
+0 -389.2278 Td
(3538 binit\(void\)) 69.8962 Tj
-0 -398.721 Td
+0 -398.7211 Td
(3539 {) 26.2111 Tj
-0 -408.214 Td
+0 -408.2145 Td
(3540 struct buf *b;) 91.7388 Tj
-0 -417.708 Td
+0 -417.7079 Td
(3541 ) 21.8426 Tj
-0 -427.201 Td
-(3542 initlock\(&buf_table_lock, "buf_table"\);) 200.952 Tj
-0 -436.695 Td
+0 -427.2012 Td
+(3542 initlock\(&buf_table_lock, "buf_table"\);) 200.9517 Tj
+0 -436.6946 Td
(3543 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(3544 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(3545 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(3546 ) 21.8426 Tj
0 -474.668 Td
(3547 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(3548 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(3549 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 35) 34.9481 Tj
Q
Q
@@ -13285,111 +13284,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/bio.c Page 2) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/bio.c Page 2) 157.2665 Tj
0 -28.4801 Td
-(3550 // Create linked list of buffers) 170.372 Tj
+(3550 // Create linked list of buffers) 170.3721 Tj
0 -37.9735 Td
-(3551 bufhead.prev = &bufhead;) 135.424 Tj
+(3551 bufhead.prev = &bufhead;) 135.4239 Tj
0 -47.4668 Td
-(3552 bufhead.next = &bufhead;) 135.424 Tj
+(3552 bufhead.next = &bufhead;) 135.4239 Tj
0 -56.9602 Td
-(3553 for\(b = buf; b < buf+NBUF; b++\){) 170.372 Tj
+(3553 for\(b = buf; b < buf+NBUF; b++\){) 170.3721 Tj
0 -66.4535 Td
-(3554 b->next = bufhead.next;) 139.792 Tj
+(3554 b->next = bufhead.next;) 139.7925 Tj
0 -75.9469 Td
-(3555 b->prev = &bufhead;) 122.318 Tj
+(3555 b->prev = &bufhead;) 122.3184 Tj
0 -85.4403 Td
-(3556 bufhead.next->prev = b;) 139.792 Tj
+(3556 bufhead.next->prev = b;) 139.7925 Tj
0 -94.9336 Td
-(3557 bufhead.next = b;) 113.581 Tj
+(3557 bufhead.next = b;) 113.5814 Tj
0 -104.427 Td
(3558 }) 34.9481 Tj
-0 -113.92 Td
+0 -113.9203 Td
(3559 }) 26.2111 Tj
-0 -123.414 Td
+0 -123.4137 Td
(3560 ) 21.8426 Tj
-0 -132.907 Td
-(3561 // Look through buffer cache for sector on device dev.) 257.742 Tj
-0 -142.4 Td
-(3562 // If not found, allocate fresh block.) 187.846 Tj
-0 -151.894 Td
-(3563 // In either case, return locked buffer.) 196.583 Tj
-0 -161.387 Td
-(3564 static struct buf*) 100.476 Tj
-0 -170.88 Td
-(3565 bget\(uint dev, uint sector\)) 139.792 Tj
-0 -180.374 Td
+0 -132.9071 Td
+(3561 // Look through buffer cache for sector on device dev.) 257.7424 Tj
+0 -142.4004 Td
+(3562 // If not found, allocate fresh block.) 187.8461 Tj
+0 -151.8938 Td
+(3563 // In either case, return locked buffer.) 196.5831 Tj
+0 -161.3871 Td
+(3564 static struct buf*) 100.4758 Tj
+0 -170.8805 Td
+(3565 bget\(uint dev, uint sector\)) 139.7925 Tj
+0 -180.3739 Td
(3566 {) 26.2111 Tj
-0 -189.867 Td
+0 -189.8672 Td
(3567 struct buf *b;) 91.7388 Tj
-0 -199.361 Td
+0 -199.3606 Td
(3568 ) 21.8426 Tj
-0 -208.854 Td
-(3569 acquire\(&buf_table_lock\);) 139.792 Tj
-0 -218.347 Td
+0 -208.8539 Td
+(3569 acquire\(&buf_table_lock\);) 139.7925 Tj
+0 -218.3473 Td
(3570 ) 21.8426 Tj
-0 -227.841 Td
+0 -227.8407 Td
(3571 loop:) 48.0537 Tj
0 -237.334 Td
-(3572 // Try for cached block.) 135.424 Tj
-0 -246.827 Td
-(3573 for\(b = bufhead.next; b != &bufhead; b = b->next\){) 249.005 Tj
-0 -256.321 Td
-(3574 if\(\(b->flags & \(B_BUSY|B_VALID\)\) &&) 192.215 Tj
-0 -265.814 Td
-(3575 b->dev == dev && b->sector == sector\){) 218.426 Tj
-0 -275.307 Td
+(3572 // Try for cached block.) 135.4239 Tj
+0 -246.8274 Td
+(3573 for\(b = bufhead.next; b != &bufhead; b = b->next\){) 249.0053 Tj
+0 -256.3207 Td
+(3574 if\(\(b->flags & \(B_BUSY|B_VALID\)\) &&) 192.2146 Tj
+0 -265.8141 Td
+(3575 b->dev == dev && b->sector == sector\){) 218.4257 Tj
+0 -275.3075 Td
(3576 if\(b->flags & B_BUSY\){) 144.161 Tj
-0 -284.801 Td
-(3577 sleep\(buf, &buf_table_lock\);) 179.109 Tj
-0 -294.294 Td
-(3578 goto loop;) 100.476 Tj
-0 -303.788 Td
+0 -284.8008 Td
+(3577 sleep\(buf, &buf_table_lock\);) 179.1091 Tj
+0 -294.2942 Td
+(3578 goto loop;) 100.4758 Tj
+0 -303.7875 Td
(3579 }) 52.4222 Tj
-0 -313.281 Td
-(3580 b->flags |= B_BUSY;) 131.055 Tj
-0 -322.774 Td
-(3581 release\(&buf_table_lock\);) 157.267 Tj
-0 -332.268 Td
+0 -313.2809 Td
+(3580 b->flags |= B_BUSY;) 131.0554 Tj
+0 -322.7743 Td
+(3581 release\(&buf_table_lock\);) 157.2665 Tj
+0 -332.2676 Td
(3582 return b;) 87.3703 Tj
0 -341.761 Td
(3583 }) 43.6851 Tj
-0 -351.254 Td
+0 -351.2543 Td
(3584 }) 34.9481 Tj
-0 -360.748 Td
+0 -360.7477 Td
(3585 ) 21.8426 Tj
-0 -370.241 Td
-(3586 // Allocate fresh block.) 135.424 Tj
-0 -379.734 Td
-(3587 for\(b = bufhead.prev; b != &bufhead; b = b->prev\){) 249.005 Tj
-0 -389.228 Td
-(3588 if\(\(b->flags & B_BUSY\) == 0\){) 166.004 Tj
-0 -398.721 Td
-(3589 b->flags = B_BUSY;) 126.687 Tj
-0 -408.214 Td
-(3590 b->dev = dev;) 104.844 Tj
-0 -417.708 Td
-(3591 b->sector = sector;) 131.055 Tj
-0 -427.201 Td
-(3592 release\(&buf_table_lock\);) 157.267 Tj
-0 -436.695 Td
+0 -370.2411 Td
+(3586 // Allocate fresh block.) 135.4239 Tj
+0 -379.7344 Td
+(3587 for\(b = bufhead.prev; b != &bufhead; b = b->prev\){) 249.0053 Tj
+0 -389.2278 Td
+(3588 if\(\(b->flags & B_BUSY\) == 0\){) 166.0035 Tj
+0 -398.7211 Td
+(3589 b->flags = B_BUSY;) 126.6869 Tj
+0 -408.2145 Td
+(3590 b->dev = dev;) 104.8443 Tj
+0 -417.7079 Td
+(3591 b->sector = sector;) 131.0554 Tj
+0 -427.2012 Td
+(3592 release\(&buf_table_lock\);) 157.2665 Tj
+0 -436.6946 Td
(3593 return b;) 87.3703 Tj
-0 -446.188 Td
+0 -446.1879 Td
(3594 }) 43.6851 Tj
-0 -455.681 Td
+0 -455.6813 Td
(3595 }) 34.9481 Tj
-0 -465.175 Td
+0 -465.1747 Td
(3596 panic\("bget: no buffers"\);) 144.161 Tj
0 -474.668 Td
(3597 }) 26.2111 Tj
-0 -484.161 Td
+0 -484.1614 Td
(3598 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(3599 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 35) 34.9481 Tj
Q
Q
@@ -13418,8 +13417,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -13434,13 +13432,13 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/bio.c Page 3) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/bio.c Page 3) 157.2665 Tj
0 -28.4801 Td
(3600 // Return a B_BUSY buf with the contents of the indicated \
-disk sector.) 327.639 Tj
+disk sector.) 327.6386 Tj
0 -37.9735 Td
(3601 struct buf*) 69.8962 Tj
0 -47.4668 Td
@@ -13452,94 +13450,94 @@ disk sector.) 327.639 Tj
0 -75.9469 Td
(3605 ) 21.8426 Tj
0 -85.4403 Td
-(3606 b = bget\(dev, sector\);) 126.687 Tj
+(3606 b = bget\(dev, sector\);) 126.6869 Tj
0 -94.9336 Td
-(3607 if\(!\(b->flags & B_VALID\)\)) 139.792 Tj
+(3607 if\(!\(b->flags & B_VALID\)\)) 139.7925 Tj
0 -104.427 Td
(3608 ide_rw\(b\);) 83.0018 Tj
-0 -113.92 Td
+0 -113.9203 Td
(3609 return b;) 69.8962 Tj
-0 -123.414 Td
+0 -123.4137 Td
(3610 }) 26.2111 Tj
-0 -132.907 Td
+0 -132.9071 Td
(3611 ) 21.8426 Tj
-0 -142.4 Td
-(3612 // Write buf's contents to disk. Must be locked.) 235.9 Tj
-0 -151.894 Td
+0 -142.4004 Td
+(3612 // Write buf's contents to disk. Must be locked.) 235.8998 Tj
+0 -151.8938 Td
(3613 void) 39.3166 Tj
-0 -161.387 Td
-(3614 bwrite\(struct buf *b\)) 113.581 Tj
-0 -170.88 Td
+0 -161.3871 Td
+(3614 bwrite\(struct buf *b\)) 113.5814 Tj
+0 -170.8805 Td
(3615 {) 26.2111 Tj
-0 -180.374 Td
+0 -180.3739 Td
(3616 if\(\(b->flags & B_BUSY\) == 0\)) 152.898 Tj
-0 -189.867 Td
-(3617 panic\("bwrite"\);) 109.213 Tj
-0 -199.361 Td
-(3618 b->flags |= B_DIRTY;) 117.95 Tj
-0 -208.854 Td
+0 -189.8672 Td
+(3617 panic\("bwrite"\);) 109.2129 Tj
+0 -199.3606 Td
+(3618 b->flags |= B_DIRTY;) 117.9499 Tj
+0 -208.8539 Td
(3619 ide_rw\(b\);) 74.2647 Tj
-0 -218.347 Td
+0 -218.3473 Td
(3620 }) 26.2111 Tj
-0 -227.841 Td
+0 -227.8407 Td
(3621 ) 21.8426 Tj
0 -237.334 Td
-(3622 // Release the buffer buf.) 135.424 Tj
-0 -246.827 Td
+(3622 // Release the buffer buf.) 135.4239 Tj
+0 -246.8274 Td
(3623 void) 39.3166 Tj
-0 -256.321 Td
-(3624 brelse\(struct buf *b\)) 113.581 Tj
-0 -265.814 Td
+0 -256.3207 Td
+(3624 brelse\(struct buf *b\)) 113.5814 Tj
+0 -265.8141 Td
(3625 {) 26.2111 Tj
-0 -275.307 Td
+0 -275.3075 Td
(3626 if\(\(b->flags & B_BUSY\) == 0\)) 152.898 Tj
-0 -284.801 Td
-(3627 panic\("brelse"\);) 109.213 Tj
-0 -294.294 Td
+0 -284.8008 Td
+(3627 panic\("brelse"\);) 109.2129 Tj
+0 -294.2942 Td
(3628 ) 21.8426 Tj
-0 -303.788 Td
-(3629 acquire\(&buf_table_lock\);) 139.792 Tj
-0 -313.281 Td
+0 -303.7875 Td
+(3629 acquire\(&buf_table_lock\);) 139.7925 Tj
+0 -313.2809 Td
(3630 ) 21.8426 Tj
-0 -322.774 Td
-(3631 b->next->prev = b->prev;) 135.424 Tj
-0 -332.268 Td
-(3632 b->prev->next = b->next;) 135.424 Tj
+0 -322.7743 Td
+(3631 b->next->prev = b->prev;) 135.4239 Tj
+0 -332.2676 Td
+(3632 b->prev->next = b->next;) 135.4239 Tj
0 -341.761 Td
-(3633 b->next = bufhead.next;) 131.055 Tj
-0 -351.254 Td
-(3634 b->prev = &bufhead;) 113.581 Tj
-0 -360.748 Td
-(3635 bufhead.next->prev = b;) 131.055 Tj
-0 -370.241 Td
-(3636 bufhead.next = b;) 104.844 Tj
-0 -379.734 Td
+(3633 b->next = bufhead.next;) 131.0554 Tj
+0 -351.2543 Td
+(3634 b->prev = &bufhead;) 113.5814 Tj
+0 -360.7477 Td
+(3635 bufhead.next->prev = b;) 131.0554 Tj
+0 -370.2411 Td
+(3636 bufhead.next = b;) 104.8443 Tj
+0 -379.7344 Td
(3637 ) 21.8426 Tj
-0 -389.228 Td
-(3638 b->flags &= ~B_BUSY;) 117.95 Tj
-0 -398.721 Td
+0 -389.2278 Td
+(3638 b->flags &= ~B_BUSY;) 117.9499 Tj
+0 -398.7211 Td
(3639 wakeup\(buf\);) 83.0018 Tj
-0 -408.214 Td
+0 -408.2145 Td
(3640 ) 21.8426 Tj
-0 -417.708 Td
-(3641 release\(&buf_table_lock\);) 139.792 Tj
-0 -427.201 Td
+0 -417.7079 Td
+(3641 release\(&buf_table_lock\);) 139.7925 Tj
+0 -427.2012 Td
(3642 }) 26.2111 Tj
-0 -436.695 Td
+0 -436.6946 Td
(3643 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(3644 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(3645 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(3646 ) 21.8426 Tj
0 -474.668 Td
(3647 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(3648 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(3649 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 36) 34.9481 Tj
Q
Q
@@ -13554,19 +13552,19 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/fs.c Page 1) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/fs.c Page 1) 152.898 Tj
0 -28.4801 Td
-(3650 // File system implementation. Four layers:) 214.057 Tj
+(3650 // File system implementation. Four layers:) 214.0572 Tj
0 -37.9735 Td
-(3651 // + Blocks: allocator for raw disk blocks.) 218.426 Tj
+(3651 // + Blocks: allocator for raw disk blocks.) 218.4257 Tj
0 -47.4668 Td
-(3652 // + Files: inode allocator, reading, writing, metadata.) 275.216 Tj
+(3652 // + Files: inode allocator, reading, writing, metadata.) 275.2164 Tj
0 -56.9602 Td
(3653 // + Directories: inode with special contents \(list of \
-other inodes!\)) 332.007 Tj
+other inodes!\)) 332.0071 Tj
0 -66.4535 Td
(3654 // + Names: paths like /usr/rtm/xv6/fs.c for convenient \
naming.) 305.796 Tj
@@ -13574,96 +13572,96 @@ naming.) 305.796 Tj
(3655 //) 30.5796 Tj
0 -85.4403 Td
(3656 // Disk layout is: superblock, inodes, block in-use bitmap\
-, data blocks.) 336.376 Tj
+, data blocks.) 336.3756 Tj
0 -94.9336 Td
(3657 //) 30.5796 Tj
0 -104.427 Td
(3658 // This file contains the low-level file system manipulati\
-on) 283.953 Tj
-0 -113.92 Td
+on) 283.9534 Tj
+0 -113.9203 Td
(3659 // routines. The \(higher-level\) system call implementat\
-ions) 283.953 Tj
-0 -123.414 Td
-(3660 // are in sysfile.c.) 109.213 Tj
-0 -132.907 Td
+ions) 283.9534 Tj
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+(3660 // are in sysfile.c.) 109.2129 Tj
+0 -132.9071 Td
(3661 ) 21.8426 Tj
-0 -142.4 Td
-(3662 #include "types.h") 100.476 Tj
-0 -151.894 Td
+0 -142.4004 Td
+(3662 #include "types.h") 100.4758 Tj
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(3663 #include "defs.h") 96.1073 Tj
-0 -161.387 Td
-(3664 #include "param.h") 100.476 Tj
-0 -170.88 Td
+0 -161.3871 Td
+(3664 #include "param.h") 100.4758 Tj
+0 -170.8805 Td
(3665 #include "stat.h") 96.1073 Tj
-0 -180.374 Td
+0 -180.3739 Td
(3666 #include "mmu.h") 91.7388 Tj
-0 -189.867 Td
+0 -189.8672 Td
(3667 #include "proc.h") 96.1073 Tj
-0 -199.361 Td
-(3668 #include "spinlock.h") 113.581 Tj
-0 -208.854 Td
+0 -199.3606 Td
+(3668 #include "spinlock.h") 113.5814 Tj
+0 -208.8539 Td
(3669 #include "buf.h") 91.7388 Tj
-0 -218.347 Td
+0 -218.3473 Td
(3670 #include "fs.h") 87.3703 Tj
-0 -227.841 Td
-(3671 #include "fsvar.h") 100.476 Tj
+0 -227.8407 Td
+(3671 #include "fsvar.h") 100.4758 Tj
0 -237.334 Td
(3672 #include "dev.h") 91.7388 Tj
-0 -246.827 Td
+0 -246.8274 Td
(3673 ) 21.8426 Tj
-0 -256.321 Td
-(3674 #define min\(a, b\) \(\(a\) < \(b\) ? \(a\) : \(b\)\)) 200.952 Tj
-0 -265.814 Td
-(3675 static void itrunc\(struct inode*\);) 170.372 Tj
-0 -275.307 Td
+0 -256.3207 Td
+(3674 #define min\(a, b\) \(\(a\) < \(b\) ? \(a\) : \(b\)\)) 200.9517 Tj
+0 -265.8141 Td
+(3675 static void itrunc\(struct inode*\);) 170.3721 Tj
+0 -275.3075 Td
(3676 ) 21.8426 Tj
-0 -284.801 Td
-(3677 // Read the super block.) 126.687 Tj
-0 -294.294 Td
+0 -284.8008 Td
+(3677 // Read the super block.) 126.6869 Tj
+0 -294.2942 Td
(3678 static void) 69.8962 Tj
-0 -303.788 Td
-(3679 readsb\(int dev, struct superblock *sb\)) 187.846 Tj
-0 -313.281 Td
+0 -303.7875 Td
+(3679 readsb\(int dev, struct superblock *sb\)) 187.8461 Tj
+0 -313.2809 Td
(3680 {) 26.2111 Tj
-0 -322.774 Td
+0 -322.7743 Td
(3681 struct buf *bp;) 96.1073 Tj
-0 -332.268 Td
+0 -332.2676 Td
(3682 ) 21.8426 Tj
0 -341.761 Td
-(3683 bp = bread\(dev, 1\);) 113.581 Tj
-0 -351.254 Td
-(3684 memmove\(sb, bp->data, sizeof\(*sb\)\);) 183.478 Tj
-0 -360.748 Td
+(3683 bp = bread\(dev, 1\);) 113.5814 Tj
+0 -351.2543 Td
+(3684 memmove\(sb, bp->data, sizeof\(*sb\)\);) 183.4776 Tj
+0 -360.7477 Td
(3685 brelse\(bp\);) 78.6333 Tj
-0 -370.241 Td
+0 -370.2411 Td
(3686 }) 26.2111 Tj
-0 -379.734 Td
+0 -379.7344 Td
(3687 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(3688 // Zero a block.) 91.7388 Tj
-0 -398.721 Td
+0 -398.7211 Td
(3689 static void) 69.8962 Tj
-0 -408.214 Td
-(3690 bzero\(int dev, int bno\)) 122.318 Tj
-0 -417.708 Td
+0 -408.2145 Td
+(3690 bzero\(int dev, int bno\)) 122.3184 Tj
+0 -417.7079 Td
(3691 {) 26.2111 Tj
-0 -427.201 Td
+0 -427.2012 Td
(3692 struct buf *bp;) 96.1073 Tj
-0 -436.695 Td
+0 -436.6946 Td
(3693 ) 21.8426 Tj
-0 -446.188 Td
-(3694 bp = bread\(dev, bno\);) 122.318 Tj
-0 -455.681 Td
-(3695 memset\(bp->data, 0, BSIZE\);) 148.529 Tj
-0 -465.175 Td
+0 -446.1879 Td
+(3694 bp = bread\(dev, bno\);) 122.3184 Tj
+0 -455.6813 Td
+(3695 memset\(bp->data, 0, BSIZE\);) 148.5295 Tj
+0 -465.1747 Td
(3696 bwrite\(bp\);) 78.6333 Tj
0 -474.668 Td
(3697 brelse\(bp\);) 78.6333 Tj
-0 -484.161 Td
+0 -484.1614 Td
(3698 }) 26.2111 Tj
-0 -493.655 Td
+0 -493.6547 Td
(3699 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 36) 34.9481 Tj
Q
Q
@@ -13692,8 +13690,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -13708,16 +13705,16 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/fs.c Page 2) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/fs.c Page 2) 152.898 Tj
0 -28.4801 Td
(3700 // Blocks.) 65.5277 Tj
0 -37.9735 Td
(3701 ) 21.8426 Tj
0 -47.4668 Td
-(3702 // Allocate a disk block.) 131.055 Tj
+(3702 // Allocate a disk block.) 131.0554 Tj
0 -56.9602 Td
(3703 static uint) 69.8962 Tj
0 -66.4535 Td
@@ -13729,92 +13726,92 @@ q
0 -94.9336 Td
(3707 struct buf *bp;) 96.1073 Tj
0 -104.427 Td
-(3708 struct superblock sb;) 122.318 Tj
-0 -113.92 Td
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(3709 ) 21.8426 Tj
-0 -123.414 Td
+0 -123.4137 Td
(3710 bp = 0;) 61.1592 Tj
-0 -132.907 Td
-(3711 readsb\(dev, &sb\);) 104.844 Tj
-0 -142.4 Td
-(3712 for\(b = 0; b < sb.size; b += BPB\){) 179.109 Tj
-0 -151.894 Td
-(3713 bp = bread\(dev, BBLOCK\(b, sb.ninodes\)\);) 209.689 Tj
-0 -161.387 Td
+0 -132.9071 Td
+(3711 readsb\(dev, &sb\);) 104.8443 Tj
+0 -142.4004 Td
+(3712 for\(b = 0; b < sb.size; b += BPB\){) 179.1091 Tj
+0 -151.8938 Td
+(3713 bp = bread\(dev, BBLOCK\(b, sb.ninodes\)\);) 209.6887 Tj
+0 -161.3871 Td
(3714 for\(bi = 0; bi < BPB; bi++\){) 161.635 Tj
-0 -170.88 Td
-(3715 m = 1 << \(bi % 8\);) 126.687 Tj
-0 -180.374 Td
+0 -170.8805 Td
+(3715 m = 1 << \(bi % 8\);) 126.6869 Tj
+0 -180.3739 Td
(3716 if\(\(bp->data[bi/8] & m\) == 0\){ // Is block free\
-?) 262.111 Tj
-0 -189.867 Td
+?) 262.1109 Tj
+0 -189.8672 Td
(3717 bp->data[bi/8] |= m; // Mark block in use on disk\
-.) 279.585 Tj
-0 -199.361 Td
-(3718 bwrite\(bp\);) 104.844 Tj
-0 -208.854 Td
-(3719 brelse\(bp\);) 104.844 Tj
-0 -218.347 Td
-(3720 return b + bi;) 117.95 Tj
-0 -227.841 Td
+.) 279.5849 Tj
+0 -199.3606 Td
+(3718 bwrite\(bp\);) 104.8443 Tj
+0 -208.8539 Td
+(3719 brelse\(bp\);) 104.8443 Tj
+0 -218.3473 Td
+(3720 return b + bi;) 117.9499 Tj
+0 -227.8407 Td
(3721 }) 52.4222 Tj
0 -237.334 Td
(3722 }) 43.6851 Tj
-0 -246.827 Td
+0 -246.8274 Td
(3723 brelse\(bp\);) 87.3703 Tj
-0 -256.321 Td
+0 -256.3207 Td
(3724 }) 34.9481 Tj
-0 -265.814 Td
-(3725 panic\("balloc: out of blocks"\);) 166.004 Tj
-0 -275.307 Td
+0 -265.8141 Td
+(3725 panic\("balloc: out of blocks"\);) 166.0035 Tj
+0 -275.3075 Td
(3726 }) 26.2111 Tj
-0 -284.801 Td
+0 -284.8008 Td
(3727 ) 21.8426 Tj
-0 -294.294 Td
-(3728 // Free a disk block.) 113.581 Tj
-0 -303.788 Td
+0 -294.2942 Td
+(3728 // Free a disk block.) 113.5814 Tj
+0 -303.7875 Td
(3729 static void) 69.8962 Tj
-0 -313.281 Td
-(3730 bfree\(int dev, uint b\)) 117.95 Tj
-0 -322.774 Td
+0 -313.2809 Td
+(3730 bfree\(int dev, uint b\)) 117.9499 Tj
+0 -322.7743 Td
(3731 {) 26.2111 Tj
-0 -332.268 Td
+0 -332.2676 Td
(3732 struct buf *bp;) 96.1073 Tj
0 -341.761 Td
-(3733 struct superblock sb;) 122.318 Tj
-0 -351.254 Td
+(3733 struct superblock sb;) 122.3184 Tj
+0 -351.2543 Td
(3734 int bi, m;) 74.2647 Tj
-0 -360.748 Td
+0 -360.7477 Td
(3735 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(3736 bzero\(dev, b\);) 91.7388 Tj
-0 -379.734 Td
+0 -379.7344 Td
(3737 ) 21.8426 Tj
-0 -389.228 Td
-(3738 readsb\(dev, &sb\);) 104.844 Tj
-0 -398.721 Td
-(3739 bp = bread\(dev, BBLOCK\(b, sb.ninodes\)\);) 200.952 Tj
-0 -408.214 Td
+0 -389.2278 Td
+(3738 readsb\(dev, &sb\);) 104.8443 Tj
+0 -398.7211 Td
+(3739 bp = bread\(dev, BBLOCK\(b, sb.ninodes\)\);) 200.9517 Tj
+0 -408.2145 Td
(3740 bi = b % BPB;) 87.3703 Tj
-0 -417.708 Td
-(3741 m = 1 << \(bi % 8\);) 109.213 Tj
-0 -427.201 Td
-(3742 if\(\(bp->data[bi/8] & m\) == 0\)) 157.267 Tj
-0 -436.695 Td
+0 -417.7079 Td
+(3741 m = 1 << \(bi % 8\);) 109.2129 Tj
+0 -427.2012 Td
+(3742 if\(\(bp->data[bi/8] & m\) == 0\)) 157.2665 Tj
+0 -436.6946 Td
(3743 panic\("freeing free block"\);) 161.635 Tj
-0 -446.188 Td
-(3744 bp->data[bi/8] &= ~m; // Mark block free on disk.) 249.005 Tj
-0 -455.681 Td
+0 -446.1879 Td
+(3744 bp->data[bi/8] &= ~m; // Mark block free on disk.) 249.0053 Tj
+0 -455.6813 Td
(3745 bwrite\(bp\);) 78.6333 Tj
-0 -465.175 Td
+0 -465.1747 Td
(3746 brelse\(bp\);) 78.6333 Tj
0 -474.668 Td
(3747 }) 26.2111 Tj
-0 -484.161 Td
+0 -484.1614 Td
(3748 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(3749 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 37) 34.9481 Tj
Q
Q
@@ -13829,123 +13826,123 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/fs.c Page 3) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/fs.c Page 3) 152.898 Tj
0 -28.4801 Td
(3750 // Inodes.) 65.5277 Tj
0 -37.9735 Td
(3751 //) 30.5796 Tj
0 -47.4668 Td
-(3752 // An inode is a single, unnamed file in the file system.) 270.848 Tj
+(3752 // An inode is a single, unnamed file in the file system.) 270.8479 Tj
0 -56.9602 Td
(3753 // The inode disk structure holds metadata \(the type, dev\
-ice numbers,) 323.27 Tj
+ice numbers,) 323.2701 Tj
0 -66.4535 Td
(3754 // and data size\) along with a list of blocks where the a\
-ssociated) 310.165 Tj
+ssociated) 310.1645 Tj
0 -75.9469 Td
-(3755 // data can be found.) 113.581 Tj
+(3755 // data can be found.) 113.5814 Tj
0 -85.4403 Td
(3756 //) 30.5796 Tj
0 -94.9336 Td
(3757 // The inodes are laid out sequentially on disk immediatel\
y after) 305.796 Tj
0 -104.427 Td
-(3758 // the superblock. The kernel keeps a cache of the in-use) 275.216 Tj
-0 -113.92 Td
+(3758 // the superblock. The kernel keeps a cache of the in-use) 275.2164 Tj
+0 -113.9203 Td
(3759 // on-disk structures to provide a place for synchronizing\
access) 305.796 Tj
-0 -123.414 Td
-(3760 // to inodes shared between multiple processes.) 227.163 Tj
-0 -132.907 Td
+0 -123.4137 Td
+(3760 // to inodes shared between multiple processes.) 227.1628 Tj
+0 -132.9071 Td
(3761 //) 30.5796 Tj
-0 -142.4 Td
+0 -142.4004 Td
(3762 // ip->ref counts the number of pointer references to this\
cached) 305.796 Tj
-0 -151.894 Td
+0 -151.8938 Td
(3763 // inode; references are typically kept in struct file and\
- in cp->cwd.) 327.639 Tj
-0 -161.387 Td
+ in cp->cwd.) 327.6386 Tj
+0 -161.3871 Td
(3764 // When ip->ref falls to zero, the inode is no longer cach\
ed.) 288.322 Tj
-0 -170.88 Td
+0 -170.8805 Td
(3765 // It is an error to use an inode without holding a refere\
-nce to it.) 318.902 Tj
-0 -180.374 Td
+nce to it.) 318.9016 Tj
+0 -180.3739 Td
(3766 //) 30.5796 Tj
-0 -189.867 Td
-(3767 // Processes are only allowed to read and write inode) 253.374 Tj
-0 -199.361 Td
-(3768 // metadata and contents when holding the inode's lock,) 262.111 Tj
-0 -208.854 Td
-(3769 // represented by the I_BUSY flag in the in-memory copy.) 266.479 Tj
-0 -218.347 Td
-(3770 // Because inode locks are held during disk accesses,) 253.374 Tj
-0 -227.841 Td
-(3771 // they are implemented using a flag rather than with) 253.374 Tj
+0 -189.8672 Td
+(3767 // Processes are only allowed to read and write inode) 253.3738 Tj
+0 -199.3606 Td
+(3768 // metadata and contents when holding the inode's lock,) 262.1109 Tj
+0 -208.8539 Td
+(3769 // represented by the I_BUSY flag in the in-memory copy.) 266.4794 Tj
+0 -218.3473 Td
+(3770 // Because inode locks are held during disk accesses,) 253.3738 Tj
+0 -227.8407 Td
+(3771 // they are implemented using a flag rather than with) 253.3738 Tj
0 -237.334 Td
-(3772 // spin locks. Callers are responsible for locking) 244.637 Tj
-0 -246.827 Td
+(3772 // spin locks. Callers are responsible for locking) 244.6368 Tj
+0 -246.8274 Td
(3773 // inodes before passing them to routines in this file; le\
aving) 297.059 Tj
-0 -256.321 Td
+0 -256.3207 Td
(3774 // this responsibility with the caller makes it possible f\
or them) 305.796 Tj
-0 -265.814 Td
-(3775 // to create arbitrarily-sized atomic operations.) 235.9 Tj
-0 -275.307 Td
+0 -265.8141 Td
+(3775 // to create arbitrarily-sized atomic operations.) 235.8998 Tj
+0 -275.3075 Td
(3776 //) 30.5796 Tj
-0 -284.801 Td
-(3777 // To give maximum control over locking to the callers,) 262.111 Tj
-0 -294.294 Td
-(3778 // the routines in this file that return inode pointers) 262.111 Tj
-0 -303.788 Td
+0 -284.8008 Td
+(3777 // To give maximum control over locking to the callers,) 262.1109 Tj
+0 -294.2942 Td
+(3778 // the routines in this file that return inode pointers) 262.1109 Tj
+0 -303.7875 Td
(3779 // return pointers to *unlocked* inodes. It is the caller\
-s') 283.953 Tj
-0 -313.281 Td
+s') 283.9534 Tj
+0 -313.2809 Td
(3780 // responsibility to lock them before using them. A non-z\
ero) 288.322 Tj
-0 -322.774 Td
-(3781 // ip->ref keeps these unlocked inodes in the cache.) 249.005 Tj
-0 -332.268 Td
+0 -322.7743 Td
+(3781 // ip->ref keeps these unlocked inodes in the cache.) 249.0053 Tj
+0 -332.2676 Td
(3782 ) 21.8426 Tj
0 -341.761 Td
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-0 -351.254 Td
-(3784 struct spinlock lock;) 122.318 Tj
-0 -360.748 Td
-(3785 struct inode inode[NINODE];) 148.529 Tj
-0 -370.241 Td
+0 -351.2543 Td
+(3784 struct spinlock lock;) 122.3184 Tj
+0 -360.7477 Td
+(3785 struct inode inode[NINODE];) 148.5295 Tj
+0 -370.2411 Td
(3786 } icache;) 61.1592 Tj
-0 -379.734 Td
+0 -379.7344 Td
(3787 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(3788 void) 39.3166 Tj
-0 -398.721 Td
+0 -398.7211 Td
(3789 iinit\(void\)) 69.8962 Tj
-0 -408.214 Td
+0 -408.2145 Td
(3790 {) 26.2111 Tj
-0 -417.708 Td
-(3791 initlock\(&icache.lock, "icache.lock"\);) 196.583 Tj
-0 -427.201 Td
+0 -417.7079 Td
+(3791 initlock\(&icache.lock, "icache.lock"\);) 196.5831 Tj
+0 -427.2012 Td
(3792 }) 26.2111 Tj
-0 -436.695 Td
+0 -436.6946 Td
(3793 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(3794 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(3795 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(3796 ) 21.8426 Tj
0 -474.668 Td
(3797 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(3798 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(3799 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 37) 34.9481 Tj
Q
Q
@@ -13974,8 +13971,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -13990,114 +13986,114 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/fs.c Page 4) 152.898 Tj
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+(Sep 3 10:05 2008 xv6/fs.c Page 4) 152.898 Tj
0 -28.4801 Td
-(3800 // Find the inode with number inum on device dev) 231.531 Tj
+(3800 // Find the inode with number inum on device dev) 231.5313 Tj
0 -37.9735 Td
-(3801 // and return the in-memory copy.) 166.004 Tj
+(3801 // and return the in-memory copy.) 166.0035 Tj
0 -47.4668 Td
-(3802 static struct inode*) 109.213 Tj
+(3802 static struct inode*) 109.2129 Tj
0 -56.9602 Td
-(3803 iget\(uint dev, uint inum\)) 131.055 Tj
+(3803 iget\(uint dev, uint inum\)) 131.0554 Tj
0 -66.4535 Td
(3804 {) 26.2111 Tj
0 -75.9469 Td
-(3805 struct inode *ip, *empty;) 139.792 Tj
+(3805 struct inode *ip, *empty;) 139.7925 Tj
0 -85.4403 Td
(3806 ) 21.8426 Tj
0 -94.9336 Td
-(3807 acquire\(&icache.lock\);) 126.687 Tj
+(3807 acquire\(&icache.lock\);) 126.6869 Tj
0 -104.427 Td
(3808 ) 21.8426 Tj
-0 -113.92 Td
-(3809 // Try for cached inode.) 135.424 Tj
-0 -123.414 Td
+0 -113.9203 Td
+(3809 // Try for cached inode.) 135.4239 Tj
+0 -123.4137 Td
(3810 empty = 0;) 74.2647 Tj
-0 -132.907 Td
+0 -132.9071 Td
(3811 for\(ip = &icache.inode[0]; ip < &icache.inode[NINODE]; \
ip++\){) 297.059 Tj
-0 -142.4 Td
+0 -142.4004 Td
(3812 if\(ip->ref > 0 && ip->dev == dev && ip->inum == inum\)\
-{) 275.216 Tj
-0 -151.894 Td
+{) 275.2164 Tj
+0 -151.8938 Td
(3813 ip->ref++;) 91.7388 Tj
-0 -161.387 Td
+0 -161.3871 Td
(3814 release\(&icache.lock\);) 144.161 Tj
-0 -170.88 Td
+0 -170.8805 Td
(3815 return ip;) 91.7388 Tj
-0 -180.374 Td
+0 -180.3739 Td
(3816 }) 43.6851 Tj
-0 -189.867 Td
+0 -189.8672 Td
(3817 if\(empty == 0 && ip->ref == 0\) // Remember empty \
slot.) 288.322 Tj
-0 -199.361 Td
+0 -199.3606 Td
(3818 empty = ip;) 96.1073 Tj
-0 -208.854 Td
+0 -208.8539 Td
(3819 }) 34.9481 Tj
-0 -218.347 Td
+0 -218.3473 Td
(3820 ) 21.8426 Tj
-0 -227.841 Td
-(3821 // Allocate fresh inode.) 135.424 Tj
+0 -227.8407 Td
+(3821 // Allocate fresh inode.) 135.4239 Tj
0 -237.334 Td
(3822 if\(empty == 0\)) 91.7388 Tj
-0 -246.827 Td
-(3823 panic\("iget: no inodes"\);) 148.529 Tj
-0 -256.321 Td
+0 -246.8274 Td
+(3823 panic\("iget: no inodes"\);) 148.5295 Tj
+0 -256.3207 Td
(3824 ) 21.8426 Tj
-0 -265.814 Td
+0 -265.8141 Td
(3825 ip = empty;) 78.6333 Tj
-0 -275.307 Td
+0 -275.3075 Td
(3826 ip->dev = dev;) 91.7388 Tj
-0 -284.801 Td
-(3827 ip->inum = inum;) 100.476 Tj
-0 -294.294 Td
+0 -284.8008 Td
+(3827 ip->inum = inum;) 100.4758 Tj
+0 -294.2942 Td
(3828 ip->ref = 1;) 83.0018 Tj
-0 -303.788 Td
+0 -303.7875 Td
(3829 ip->flags = 0;) 91.7388 Tj
-0 -313.281 Td
-(3830 release\(&icache.lock\);) 126.687 Tj
-0 -322.774 Td
+0 -313.2809 Td
+(3830 release\(&icache.lock\);) 126.6869 Tj
+0 -322.7743 Td
(3831 ) 21.8426 Tj
-0 -332.268 Td
+0 -332.2676 Td
(3832 return ip;) 74.2647 Tj
0 -341.761 Td
(3833 }) 26.2111 Tj
-0 -351.254 Td
+0 -351.2543 Td
(3834 ) 21.8426 Tj
-0 -360.748 Td
-(3835 // Increment reference count for ip.) 179.109 Tj
-0 -370.241 Td
-(3836 // Returns ip to enable ip = idup\(ip1\) idiom.) 218.426 Tj
-0 -379.734 Td
+0 -360.7477 Td
+(3835 // Increment reference count for ip.) 179.1091 Tj
+0 -370.2411 Td
+(3836 // Returns ip to enable ip = idup\(ip1\) idiom.) 218.4257 Tj
+0 -379.7344 Td
(3837 struct inode*) 78.6333 Tj
-0 -389.228 Td
-(3838 idup\(struct inode *ip\)) 117.95 Tj
-0 -398.721 Td
+0 -389.2278 Td
+(3838 idup\(struct inode *ip\)) 117.9499 Tj
+0 -398.7211 Td
(3839 {) 26.2111 Tj
-0 -408.214 Td
-(3840 acquire\(&icache.lock\);) 126.687 Tj
-0 -417.708 Td
+0 -408.2145 Td
+(3840 acquire\(&icache.lock\);) 126.6869 Tj
+0 -417.7079 Td
(3841 ip->ref++;) 74.2647 Tj
-0 -427.201 Td
-(3842 release\(&icache.lock\);) 126.687 Tj
-0 -436.695 Td
+0 -427.2012 Td
+(3842 release\(&icache.lock\);) 126.6869 Tj
+0 -436.6946 Td
(3843 return ip;) 74.2647 Tj
-0 -446.188 Td
+0 -446.1879 Td
(3844 }) 26.2111 Tj
-0 -455.681 Td
+0 -455.6813 Td
(3845 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(3846 ) 21.8426 Tj
0 -474.668 Td
(3847 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(3848 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(3849 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 38) 34.9481 Tj
Q
Q
@@ -14112,111 +14108,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/fs.c Page 5) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/fs.c Page 5) 152.898 Tj
0 -28.4801 Td
-(3850 // Lock the given inode.) 126.687 Tj
+(3850 // Lock the given inode.) 126.6869 Tj
0 -37.9735 Td
(3851 void) 39.3166 Tj
0 -47.4668 Td
-(3852 ilock\(struct inode *ip\)) 122.318 Tj
+(3852 ilock\(struct inode *ip\)) 122.3184 Tj
0 -56.9602 Td
(3853 {) 26.2111 Tj
0 -66.4535 Td
(3854 struct buf *bp;) 96.1073 Tj
0 -75.9469 Td
-(3855 struct dinode *dip;) 113.581 Tj
+(3855 struct dinode *dip;) 113.5814 Tj
0 -85.4403 Td
(3856 ) 21.8426 Tj
0 -94.9336 Td
(3857 if\(ip == 0 || ip->ref < 1\)) 144.161 Tj
0 -104.427 Td
-(3858 panic\("ilock"\);) 104.844 Tj
-0 -113.92 Td
+(3858 panic\("ilock"\);) 104.8443 Tj
+0 -113.9203 Td
(3859 ) 21.8426 Tj
-0 -123.414 Td
-(3860 acquire\(&icache.lock\);) 126.687 Tj
-0 -132.907 Td
-(3861 while\(ip->flags & I_BUSY\)) 139.792 Tj
-0 -142.4 Td
+0 -123.4137 Td
+(3860 acquire\(&icache.lock\);) 126.6869 Tj
+0 -132.9071 Td
+(3861 while\(ip->flags & I_BUSY\)) 139.7925 Tj
+0 -142.4004 Td
(3862 sleep\(ip, &icache.lock\);) 144.161 Tj
-0 -151.894 Td
-(3863 ip->flags |= I_BUSY;) 117.95 Tj
-0 -161.387 Td
-(3864 release\(&icache.lock\);) 126.687 Tj
-0 -170.88 Td
+0 -151.8938 Td
+(3863 ip->flags |= I_BUSY;) 117.9499 Tj
+0 -161.3871 Td
+(3864 release\(&icache.lock\);) 126.6869 Tj
+0 -170.8805 Td
(3865 ) 21.8426 Tj
-0 -180.374 Td
-(3866 if\(!\(ip->flags & I_VALID\)\){) 148.529 Tj
-0 -189.867 Td
-(3867 bp = bread\(ip->dev, IBLOCK\(ip->inum\)\);) 205.32 Tj
-0 -199.361 Td
-(3868 dip = \(struct dinode*\)bp->data + ip->inum%IPB;) 240.268 Tj
-0 -208.854 Td
-(3869 ip->type = dip->type;) 131.055 Tj
-0 -218.347 Td
-(3870 ip->major = dip->major;) 139.792 Tj
-0 -227.841 Td
-(3871 ip->minor = dip->minor;) 139.792 Tj
+0 -180.3739 Td
+(3866 if\(!\(ip->flags & I_VALID\)\){) 148.5295 Tj
+0 -189.8672 Td
+(3867 bp = bread\(ip->dev, IBLOCK\(ip->inum\)\);) 205.3202 Tj
+0 -199.3606 Td
+(3868 dip = \(struct dinode*\)bp->data + ip->inum%IPB;) 240.2683 Tj
+0 -208.8539 Td
+(3869 ip->type = dip->type;) 131.0554 Tj
+0 -218.3473 Td
+(3870 ip->major = dip->major;) 139.7925 Tj
+0 -227.8407 Td
+(3871 ip->minor = dip->minor;) 139.7925 Tj
0 -237.334 Td
-(3872 ip->nlink = dip->nlink;) 139.792 Tj
-0 -246.827 Td
-(3873 ip->size = dip->size;) 131.055 Tj
-0 -256.321 Td
-(3874 memmove\(ip->addrs, dip->addrs, sizeof\(ip->addrs\)\);) 257.742 Tj
-0 -265.814 Td
+(3872 ip->nlink = dip->nlink;) 139.7925 Tj
+0 -246.8274 Td
+(3873 ip->size = dip->size;) 131.0554 Tj
+0 -256.3207 Td
+(3874 memmove\(ip->addrs, dip->addrs, sizeof\(ip->addrs\)\);) 257.7424 Tj
+0 -265.8141 Td
(3875 brelse\(bp\);) 87.3703 Tj
-0 -275.307 Td
-(3876 ip->flags |= I_VALID;) 131.055 Tj
-0 -284.801 Td
-(3877 if\(ip->type == 0\)) 113.581 Tj
-0 -294.294 Td
+0 -275.3075 Td
+(3876 ip->flags |= I_VALID;) 131.0554 Tj
+0 -284.8008 Td
+(3877 if\(ip->type == 0\)) 113.5814 Tj
+0 -294.2942 Td
(3878 panic\("ilock: no type"\);) 152.898 Tj
-0 -303.788 Td
+0 -303.7875 Td
(3879 }) 34.9481 Tj
-0 -313.281 Td
+0 -313.2809 Td
(3880 }) 26.2111 Tj
-0 -322.774 Td
+0 -322.7743 Td
(3881 ) 21.8426 Tj
-0 -332.268 Td
-(3882 // Unlock the given inode.) 135.424 Tj
+0 -332.2676 Td
+(3882 // Unlock the given inode.) 135.4239 Tj
0 -341.761 Td
(3883 void) 39.3166 Tj
-0 -351.254 Td
-(3884 iunlock\(struct inode *ip\)) 131.055 Tj
-0 -360.748 Td
+0 -351.2543 Td
+(3884 iunlock\(struct inode *ip\)) 131.0554 Tj
+0 -360.7477 Td
(3885 {) 26.2111 Tj
-0 -370.241 Td
-(3886 if\(ip == 0 || !\(ip->flags & I_BUSY\) || ip->ref < 1\)) 253.374 Tj
-0 -379.734 Td
-(3887 panic\("iunlock"\);) 113.581 Tj
-0 -389.228 Td
+0 -370.2411 Td
+(3886 if\(ip == 0 || !\(ip->flags & I_BUSY\) || ip->ref < 1\)) 253.3738 Tj
+0 -379.7344 Td
+(3887 panic\("iunlock"\);) 113.5814 Tj
+0 -389.2278 Td
(3888 ) 21.8426 Tj
-0 -398.721 Td
-(3889 acquire\(&icache.lock\);) 126.687 Tj
-0 -408.214 Td
-(3890 ip->flags &= ~I_BUSY;) 122.318 Tj
-0 -417.708 Td
+0 -398.7211 Td
+(3889 acquire\(&icache.lock\);) 126.6869 Tj
+0 -408.2145 Td
+(3890 ip->flags &= ~I_BUSY;) 122.3184 Tj
+0 -417.7079 Td
(3891 wakeup\(ip\);) 78.6333 Tj
-0 -427.201 Td
-(3892 release\(&icache.lock\);) 126.687 Tj
-0 -436.695 Td
+0 -427.2012 Td
+(3892 release\(&icache.lock\);) 126.6869 Tj
+0 -436.6946 Td
(3893 }) 26.2111 Tj
-0 -446.188 Td
+0 -446.1879 Td
(3894 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(3895 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(3896 ) 21.8426 Tj
0 -474.668 Td
(3897 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(3898 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(3899 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 38) 34.9481 Tj
Q
Q
@@ -14245,8 +14241,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -14261,112 +14256,112 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/fs.c Page 6) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/fs.c Page 6) 152.898 Tj
0 -28.4801 Td
-(3900 // Caller holds reference to unlocked ip. Drop reference.) 275.216 Tj
+(3900 // Caller holds reference to unlocked ip. Drop reference.) 275.2164 Tj
0 -37.9735 Td
(3901 void) 39.3166 Tj
0 -47.4668 Td
-(3902 iput\(struct inode *ip\)) 117.95 Tj
+(3902 iput\(struct inode *ip\)) 117.9499 Tj
0 -56.9602 Td
(3903 {) 26.2111 Tj
0 -66.4535 Td
-(3904 acquire\(&icache.lock\);) 126.687 Tj
+(3904 acquire\(&icache.lock\);) 126.6869 Tj
0 -75.9469 Td
(3905 if\(ip->ref == 1 && \(ip->flags & I_VALID\) && ip->nlink\
- == 0\){) 292.69 Tj
+ == 0\){) 292.6905 Tj
0 -85.4403 Td
-(3906 // inode is no longer used: truncate and free inode.) 266.479 Tj
+(3906 // inode is no longer used: truncate and free inode.) 266.4794 Tj
0 -94.9336 Td
-(3907 if\(ip->flags & I_BUSY\)) 135.424 Tj
+(3907 if\(ip->flags & I_BUSY\)) 135.4239 Tj
0 -104.427 Td
-(3908 panic\("iput busy"\);) 131.055 Tj
-0 -113.92 Td
-(3909 ip->flags |= I_BUSY;) 126.687 Tj
-0 -123.414 Td
-(3910 release\(&icache.lock\);) 135.424 Tj
-0 -132.907 Td
+(3908 panic\("iput busy"\);) 131.0554 Tj
+0 -113.9203 Td
+(3909 ip->flags |= I_BUSY;) 126.6869 Tj
+0 -123.4137 Td
+(3910 release\(&icache.lock\);) 135.4239 Tj
+0 -132.9071 Td
(3911 itrunc\(ip\);) 87.3703 Tj
-0 -142.4 Td
+0 -142.4004 Td
(3912 ip->type = 0;) 96.1073 Tj
-0 -151.894 Td
+0 -151.8938 Td
(3913 iupdate\(ip\);) 91.7388 Tj
-0 -161.387 Td
-(3914 acquire\(&icache.lock\);) 135.424 Tj
-0 -170.88 Td
-(3915 ip->flags &= ~I_BUSY;) 131.055 Tj
-0 -180.374 Td
+0 -161.3871 Td
+(3914 acquire\(&icache.lock\);) 135.4239 Tj
+0 -170.8805 Td
+(3915 ip->flags &= ~I_BUSY;) 131.0554 Tj
+0 -180.3739 Td
(3916 wakeup\(ip\);) 87.3703 Tj
-0 -189.867 Td
+0 -189.8672 Td
(3917 }) 34.9481 Tj
-0 -199.361 Td
+0 -199.3606 Td
(3918 ip->ref--;) 74.2647 Tj
-0 -208.854 Td
-(3919 release\(&icache.lock\);) 126.687 Tj
-0 -218.347 Td
+0 -208.8539 Td
+(3919 release\(&icache.lock\);) 126.6869 Tj
+0 -218.3473 Td
(3920 }) 26.2111 Tj
-0 -227.841 Td
+0 -227.8407 Td
(3921 ) 21.8426 Tj
0 -237.334 Td
-(3922 // Common idiom: unlock, then put.) 170.372 Tj
-0 -246.827 Td
+(3922 // Common idiom: unlock, then put.) 170.3721 Tj
+0 -246.8274 Td
(3923 void) 39.3166 Tj
-0 -256.321 Td
+0 -256.3207 Td
(3924 iunlockput\(struct inode *ip\)) 144.161 Tj
-0 -265.814 Td
+0 -265.8141 Td
(3925 {) 26.2111 Tj
-0 -275.307 Td
+0 -275.3075 Td
(3926 iunlock\(ip\);) 83.0018 Tj
-0 -284.801 Td
+0 -284.8008 Td
(3927 iput\(ip\);) 69.8962 Tj
-0 -294.294 Td
+0 -294.2942 Td
(3928 }) 26.2111 Tj
-0 -303.788 Td
+0 -303.7875 Td
(3929 ) 21.8426 Tj
-0 -313.281 Td
+0 -313.2809 Td
(3930 ) 21.8426 Tj
-0 -322.774 Td
+0 -322.7743 Td
(3931 ) 21.8426 Tj
-0 -332.268 Td
+0 -332.2676 Td
(3932 ) 21.8426 Tj
0 -341.761 Td
(3933 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(3934 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(3935 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(3936 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(3937 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(3938 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(3939 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(3940 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(3941 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(3942 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(3943 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(3944 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(3945 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(3946 ) 21.8426 Tj
0 -474.668 Td
(3947 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(3948 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(3949 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 39) 34.9481 Tj
Q
Q
@@ -14381,12 +14376,12 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/fs.c Page 7) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/fs.c Page 7) 152.898 Tj
0 -28.4801 Td
-(3950 // Allocate a new inode with the given type on device dev.) 275.216 Tj
+(3950 // Allocate a new inode with the given type on device dev.) 275.2164 Tj
0 -37.9735 Td
(3951 struct inode*) 78.6333 Tj
0 -47.4668 Td
@@ -14398,95 +14393,95 @@ q
0 -75.9469 Td
(3955 struct buf *bp;) 96.1073 Tj
0 -85.4403 Td
-(3956 struct dinode *dip;) 113.581 Tj
+(3956 struct dinode *dip;) 113.5814 Tj
0 -94.9336 Td
-(3957 struct superblock sb;) 122.318 Tj
+(3957 struct superblock sb;) 122.3184 Tj
0 -104.427 Td
(3958 ) 21.8426 Tj
-0 -113.92 Td
-(3959 readsb\(dev, &sb\);) 104.844 Tj
-0 -123.414 Td
+0 -113.9203 Td
+(3959 readsb\(dev, &sb\);) 104.8443 Tj
+0 -123.4137 Td
(3960 for\(inum = 1; inum < sb.ninodes; inum++\){ // loop ove\
-r inode blocks) 327.639 Tj
-0 -132.907 Td
-(3961 bp = bread\(dev, IBLOCK\(inum\)\);) 170.372 Tj
-0 -142.4 Td
-(3962 dip = \(struct dinode*\)bp->data + inum%IPB;) 222.794 Tj
-0 -151.894 Td
-(3963 if\(dip->type == 0\){ // a free inode) 196.583 Tj
-0 -161.387 Td
-(3964 memset\(dip, 0, sizeof\(*dip\)\);) 174.741 Tj
-0 -170.88 Td
-(3965 dip->type = type;) 122.318 Tj
-0 -180.374 Td
-(3966 bwrite\(bp\); // mark it allocated on the disk) 249.005 Tj
-0 -189.867 Td
+r inode blocks) 327.6386 Tj
+0 -132.9071 Td
+(3961 bp = bread\(dev, IBLOCK\(inum\)\);) 170.3721 Tj
+0 -142.4004 Td
+(3962 dip = \(struct dinode*\)bp->data + inum%IPB;) 222.7942 Tj
+0 -151.8938 Td
+(3963 if\(dip->type == 0\){ // a free inode) 196.5831 Tj
+0 -161.3871 Td
+(3964 memset\(dip, 0, sizeof\(*dip\)\);) 174.7406 Tj
+0 -170.8805 Td
+(3965 dip->type = type;) 122.3184 Tj
+0 -180.3739 Td
+(3966 bwrite\(bp\); // mark it allocated on the disk) 249.0053 Tj
+0 -189.8672 Td
(3967 brelse\(bp\);) 96.1073 Tj
-0 -199.361 Td
-(3968 return iget\(dev, inum\);) 148.529 Tj
-0 -208.854 Td
+0 -199.3606 Td
+(3968 return iget\(dev, inum\);) 148.5295 Tj
+0 -208.8539 Td
(3969 }) 43.6851 Tj
-0 -218.347 Td
+0 -218.3473 Td
(3970 brelse\(bp\);) 87.3703 Tj
-0 -227.841 Td
+0 -227.8407 Td
(3971 }) 34.9481 Tj
0 -237.334 Td
-(3972 panic\("ialloc: no inodes"\);) 148.529 Tj
-0 -246.827 Td
+(3972 panic\("ialloc: no inodes"\);) 148.5295 Tj
+0 -246.8274 Td
(3973 }) 26.2111 Tj
-0 -256.321 Td
+0 -256.3207 Td
(3974 ) 21.8426 Tj
-0 -265.814 Td
-(3975 // Copy inode, which has changed, from memory to disk.) 257.742 Tj
-0 -275.307 Td
+0 -265.8141 Td
+(3975 // Copy inode, which has changed, from memory to disk.) 257.7424 Tj
+0 -275.3075 Td
(3976 void) 39.3166 Tj
-0 -284.801 Td
-(3977 iupdate\(struct inode *ip\)) 131.055 Tj
-0 -294.294 Td
+0 -284.8008 Td
+(3977 iupdate\(struct inode *ip\)) 131.0554 Tj
+0 -294.2942 Td
(3978 {) 26.2111 Tj
-0 -303.788 Td
+0 -303.7875 Td
(3979 struct buf *bp;) 96.1073 Tj
-0 -313.281 Td
-(3980 struct dinode *dip;) 113.581 Tj
-0 -322.774 Td
+0 -313.2809 Td
+(3980 struct dinode *dip;) 113.5814 Tj
+0 -322.7743 Td
(3981 ) 21.8426 Tj
-0 -332.268 Td
-(3982 bp = bread\(ip->dev, IBLOCK\(ip->inum\)\);) 196.583 Tj
+0 -332.2676 Td
+(3982 bp = bread\(ip->dev, IBLOCK\(ip->inum\)\);) 196.5831 Tj
0 -341.761 Td
-(3983 dip = \(struct dinode*\)bp->data + ip->inum%IPB;) 231.531 Tj
-0 -351.254 Td
-(3984 dip->type = ip->type;) 122.318 Tj
-0 -360.748 Td
-(3985 dip->major = ip->major;) 131.055 Tj
-0 -370.241 Td
-(3986 dip->minor = ip->minor;) 131.055 Tj
-0 -379.734 Td
-(3987 dip->nlink = ip->nlink;) 131.055 Tj
-0 -389.228 Td
-(3988 dip->size = ip->size;) 122.318 Tj
-0 -398.721 Td
-(3989 memmove\(dip->addrs, ip->addrs, sizeof\(ip->addrs\)\);) 249.005 Tj
-0 -408.214 Td
+(3983 dip = \(struct dinode*\)bp->data + ip->inum%IPB;) 231.5313 Tj
+0 -351.2543 Td
+(3984 dip->type = ip->type;) 122.3184 Tj
+0 -360.7477 Td
+(3985 dip->major = ip->major;) 131.0554 Tj
+0 -370.2411 Td
+(3986 dip->minor = ip->minor;) 131.0554 Tj
+0 -379.7344 Td
+(3987 dip->nlink = ip->nlink;) 131.0554 Tj
+0 -389.2278 Td
+(3988 dip->size = ip->size;) 122.3184 Tj
+0 -398.7211 Td
+(3989 memmove\(dip->addrs, ip->addrs, sizeof\(ip->addrs\)\);) 249.0053 Tj
+0 -408.2145 Td
(3990 bwrite\(bp\);) 78.6333 Tj
-0 -417.708 Td
+0 -417.7079 Td
(3991 brelse\(bp\);) 78.6333 Tj
-0 -427.201 Td
+0 -427.2012 Td
(3992 }) 26.2111 Tj
-0 -436.695 Td
+0 -436.6946 Td
(3993 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(3994 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(3995 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(3996 ) 21.8426 Tj
0 -474.668 Td
(3997 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(3998 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(3999 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 39) 34.9481 Tj
Q
Q
@@ -14515,8 +14510,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -14531,116 +14525,116 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/fs.c Page 8) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/fs.c Page 8) 152.898 Tj
0 -28.4801 Td
(4000 // Inode contents) 96.1073 Tj
0 -37.9735 Td
(4001 //) 30.5796 Tj
0 -47.4668 Td
(4002 // The contents \(data\) associated with each inode is sto\
-red) 279.585 Tj
+red) 279.5849 Tj
0 -56.9602 Td
(4003 // in a sequence of blocks on the disk. The first NDIRECT\
blocks) 305.796 Tj
0 -66.4535 Td
(4004 // are listed in ip->addrs[]. The next NINDIRECT blocks a\
-re) 283.953 Tj
+re) 283.9534 Tj
0 -75.9469 Td
-(4005 // listed in the block ip->addrs[INDIRECT].) 209.689 Tj
+(4005 // listed in the block ip->addrs[INDIRECT].) 209.6887 Tj
0 -85.4403 Td
(4006 ) 21.8426 Tj
0 -94.9336 Td
(4007 // Return the disk block address of the nth block in inode\
- ip.) 292.69 Tj
+ ip.) 292.6905 Tj
0 -104.427 Td
(4008 // If there is no such block, alloc controls whether one i\
-s allocated.) 327.639 Tj
-0 -113.92 Td
+s allocated.) 327.6386 Tj
+0 -113.9203 Td
(4009 static uint) 69.8962 Tj
-0 -123.414 Td
-(4010 bmap\(struct inode *ip, uint bn, int alloc\)) 205.32 Tj
-0 -132.907 Td
+0 -123.4137 Td
+(4010 bmap\(struct inode *ip, uint bn, int alloc\)) 205.3202 Tj
+0 -132.9071 Td
(4011 {) 26.2111 Tj
-0 -142.4 Td
+0 -142.4004 Td
(4012 uint addr, *a;) 91.7388 Tj
-0 -151.894 Td
+0 -151.8938 Td
(4013 struct buf *bp;) 96.1073 Tj
-0 -161.387 Td
+0 -161.3871 Td
(4014 ) 21.8426 Tj
-0 -170.88 Td
-(4015 if\(bn < NDIRECT\){) 104.844 Tj
-0 -180.374 Td
-(4016 if\(\(addr = ip->addrs[bn]\) == 0\){) 179.109 Tj
-0 -189.867 Td
+0 -170.8805 Td
+(4015 if\(bn < NDIRECT\){) 104.8443 Tj
+0 -180.3739 Td
+(4016 if\(\(addr = ip->addrs[bn]\) == 0\){) 179.1091 Tj
+0 -189.8672 Td
(4017 if\(!alloc\)) 91.7388 Tj
-0 -199.361 Td
-(4018 return -1;) 100.476 Tj
-0 -208.854 Td
-(4019 ip->addrs[bn] = addr = balloc\(ip->dev\);) 218.426 Tj
-0 -218.347 Td
+0 -199.3606 Td
+(4018 return -1;) 100.4758 Tj
+0 -208.8539 Td
+(4019 ip->addrs[bn] = addr = balloc\(ip->dev\);) 218.4257 Tj
+0 -218.3473 Td
(4020 }) 43.6851 Tj
-0 -227.841 Td
+0 -227.8407 Td
(4021 return addr;) 91.7388 Tj
0 -237.334 Td
(4022 }) 34.9481 Tj
-0 -246.827 Td
+0 -246.8274 Td
(4023 bn -= NDIRECT;) 91.7388 Tj
-0 -256.321 Td
+0 -256.3207 Td
(4024 ) 21.8426 Tj
-0 -265.814 Td
-(4025 if\(bn < NINDIRECT\){) 113.581 Tj
-0 -275.307 Td
-(4026 // Load indirect block, allocating if necessary.) 249.005 Tj
-0 -284.801 Td
-(4027 if\(\(addr = ip->addrs[INDIRECT]\) == 0\){) 205.32 Tj
-0 -294.294 Td
+0 -265.8141 Td
+(4025 if\(bn < NINDIRECT\){) 113.5814 Tj
+0 -275.3075 Td
+(4026 // Load indirect block, allocating if necessary.) 249.0053 Tj
+0 -284.8008 Td
+(4027 if\(\(addr = ip->addrs[INDIRECT]\) == 0\){) 205.3202 Tj
+0 -294.2942 Td
(4028 if\(!alloc\)) 91.7388 Tj
-0 -303.788 Td
-(4029 return -1;) 100.476 Tj
-0 -313.281 Td
-(4030 ip->addrs[INDIRECT] = addr = balloc\(ip->dev\);) 244.637 Tj
-0 -322.774 Td
+0 -303.7875 Td
+(4029 return -1;) 100.4758 Tj
+0 -313.2809 Td
+(4030 ip->addrs[INDIRECT] = addr = balloc\(ip->dev\);) 244.6368 Tj
+0 -322.7743 Td
(4031 }) 43.6851 Tj
-0 -332.268 Td
+0 -332.2676 Td
(4032 bp = bread\(ip->dev, addr\);) 152.898 Tj
0 -341.761 Td
-(4033 a = \(uint*\)bp->data;) 126.687 Tj
-0 -351.254 Td
+(4033 a = \(uint*\)bp->data;) 126.6869 Tj
+0 -351.2543 Td
(4034 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(4035 if\(\(addr = a[bn]\) == 0\){) 144.161 Tj
-0 -370.241 Td
+0 -370.2411 Td
(4036 if\(!alloc\){) 96.1073 Tj
-0 -379.734 Td
-(4037 brelse\(bp\);) 104.844 Tj
-0 -389.228 Td
-(4038 return -1;) 100.476 Tj
-0 -398.721 Td
+0 -379.7344 Td
+(4037 brelse\(bp\);) 104.8443 Tj
+0 -389.2278 Td
+(4038 return -1;) 100.4758 Tj
+0 -398.7211 Td
(4039 }) 52.4222 Tj
-0 -408.214 Td
-(4040 a[bn] = addr = balloc\(ip->dev\);) 183.478 Tj
-0 -417.708 Td
+0 -408.2145 Td
+(4040 a[bn] = addr = balloc\(ip->dev\);) 183.4776 Tj
+0 -417.7079 Td
(4041 bwrite\(bp\);) 96.1073 Tj
-0 -427.201 Td
+0 -427.2012 Td
(4042 }) 43.6851 Tj
-0 -436.695 Td
+0 -436.6946 Td
(4043 brelse\(bp\);) 87.3703 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4044 return addr;) 91.7388 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4045 }) 34.9481 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4046 ) 21.8426 Tj
0 -474.668 Td
(4047 panic\("bmap: out of range"\);) 152.898 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4048 }) 26.2111 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4049 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 40) 34.9481 Tj
Q
Q
@@ -14655,16 +14649,16 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/fs.c Page 9) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/fs.c Page 9) 152.898 Tj
0 -28.4801 Td
-(4050 // Truncate inode \(discard contents\).) 183.478 Tj
+(4050 // Truncate inode \(discard contents\).) 183.4776 Tj
0 -37.9735 Td
(4051 static void) 69.8962 Tj
0 -47.4668 Td
-(4052 itrunc\(struct inode *ip\)) 126.687 Tj
+(4052 itrunc\(struct inode *ip\)) 126.6869 Tj
0 -56.9602 Td
(4053 {) 26.2111 Tj
0 -66.4535 Td
@@ -14676,90 +14670,90 @@ q
0 -94.9336 Td
(4057 ) 21.8426 Tj
0 -104.427 Td
-(4058 for\(i = 0; i < NDIRECT; i++\){) 157.267 Tj
-0 -113.92 Td
-(4059 if\(ip->addrs[i]\){) 113.581 Tj
-0 -123.414 Td
-(4060 bfree\(ip->dev, ip->addrs[i]\);) 174.741 Tj
-0 -132.907 Td
-(4061 ip->addrs[i] = 0;) 122.318 Tj
-0 -142.4 Td
+(4058 for\(i = 0; i < NDIRECT; i++\){) 157.2665 Tj
+0 -113.9203 Td
+(4059 if\(ip->addrs[i]\){) 113.5814 Tj
+0 -123.4137 Td
+(4060 bfree\(ip->dev, ip->addrs[i]\);) 174.7406 Tj
+0 -132.9071 Td
+(4061 ip->addrs[i] = 0;) 122.3184 Tj
+0 -142.4004 Td
(4062 }) 43.6851 Tj
-0 -151.894 Td
+0 -151.8938 Td
(4063 }) 34.9481 Tj
-0 -161.387 Td
+0 -161.3871 Td
(4064 ) 21.8426 Tj
-0 -170.88 Td
-(4065 if\(ip->addrs[INDIRECT]\){) 135.424 Tj
-0 -180.374 Td
-(4066 bp = bread\(ip->dev, ip->addrs[INDIRECT]\);) 218.426 Tj
-0 -189.867 Td
-(4067 a = \(uint*\)bp->data;) 126.687 Tj
-0 -199.361 Td
-(4068 for\(j = 0; j < NINDIRECT; j++\){) 174.741 Tj
-0 -208.854 Td
+0 -170.8805 Td
+(4065 if\(ip->addrs[INDIRECT]\){) 135.4239 Tj
+0 -180.3739 Td
+(4066 bp = bread\(ip->dev, ip->addrs[INDIRECT]\);) 218.4257 Tj
+0 -189.8672 Td
+(4067 a = \(uint*\)bp->data;) 126.6869 Tj
+0 -199.3606 Td
+(4068 for\(j = 0; j < NINDIRECT; j++\){) 174.7406 Tj
+0 -208.8539 Td
(4069 if\(a[j]\)) 83.0018 Tj
-0 -218.347 Td
-(4070 bfree\(ip->dev, a[j]\);) 148.529 Tj
-0 -227.841 Td
+0 -218.3473 Td
+(4070 bfree\(ip->dev, a[j]\);) 148.5295 Tj
+0 -227.8407 Td
(4071 }) 43.6851 Tj
0 -237.334 Td
(4072 brelse\(bp\);) 87.3703 Tj
-0 -246.827 Td
+0 -246.8274 Td
(4073 ip->addrs[INDIRECT] = 0;) 144.161 Tj
-0 -256.321 Td
+0 -256.3207 Td
(4074 }) 34.9481 Tj
-0 -265.814 Td
+0 -265.8141 Td
(4075 ) 21.8426 Tj
-0 -275.307 Td
+0 -275.3075 Td
(4076 ip->size = 0;) 87.3703 Tj
-0 -284.801 Td
+0 -284.8008 Td
(4077 iupdate\(ip\);) 83.0018 Tj
-0 -294.294 Td
+0 -294.2942 Td
(4078 }) 26.2111 Tj
-0 -303.788 Td
+0 -303.7875 Td
(4079 ) 21.8426 Tj
-0 -313.281 Td
-(4080 // Copy stat information from inode.) 179.109 Tj
-0 -322.774 Td
+0 -313.2809 Td
+(4080 // Copy stat information from inode.) 179.1091 Tj
+0 -322.7743 Td
(4081 void) 39.3166 Tj
-0 -332.268 Td
-(4082 stati\(struct inode *ip, struct stat *st\)) 196.583 Tj
+0 -332.2676 Td
+(4082 stati\(struct inode *ip, struct stat *st\)) 196.5831 Tj
0 -341.761 Td
(4083 {) 26.2111 Tj
-0 -351.254 Td
-(4084 st->dev = ip->dev;) 109.213 Tj
-0 -360.748 Td
-(4085 st->ino = ip->inum;) 113.581 Tj
-0 -370.241 Td
-(4086 st->type = ip->type;) 117.95 Tj
-0 -379.734 Td
-(4087 st->nlink = ip->nlink;) 126.687 Tj
-0 -389.228 Td
-(4088 st->size = ip->size;) 117.95 Tj
-0 -398.721 Td
+0 -351.2543 Td
+(4084 st->dev = ip->dev;) 109.2129 Tj
+0 -360.7477 Td
+(4085 st->ino = ip->inum;) 113.5814 Tj
+0 -370.2411 Td
+(4086 st->type = ip->type;) 117.9499 Tj
+0 -379.7344 Td
+(4087 st->nlink = ip->nlink;) 126.6869 Tj
+0 -389.2278 Td
+(4088 st->size = ip->size;) 117.9499 Tj
+0 -398.7211 Td
(4089 }) 26.2111 Tj
-0 -408.214 Td
+0 -408.2145 Td
(4090 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(4091 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(4092 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(4093 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4094 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4095 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4096 ) 21.8426 Tj
0 -474.668 Td
(4097 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4098 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4099 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 40) 34.9481 Tj
Q
Q
@@ -14788,8 +14782,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -14804,16 +14797,16 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/fs.c Page 10) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/fs.c Page 10) 157.2665 Tj
0 -28.4801 Td
-(4100 // Read data from inode.) 126.687 Tj
+(4100 // Read data from inode.) 126.6869 Tj
0 -37.9735 Td
(4101 int) 34.9481 Tj
0 -47.4668 Td
-(4102 readi\(struct inode *ip, char *dst, uint off, uint n\)) 249.005 Tj
+(4102 readi\(struct inode *ip, char *dst, uint off, uint n\)) 249.0053 Tj
0 -56.9602 Td
(4103 {) 26.2111 Tj
0 -66.4535 Td
@@ -14823,93 +14816,93 @@ q
0 -85.4403 Td
(4106 ) 21.8426 Tj
0 -94.9336 Td
-(4107 if\(ip->type == T_DEV\){) 126.687 Tj
+(4107 if\(ip->type == T_DEV\){) 126.6869 Tj
0 -104.427 Td
(4108 if\(ip->major < 0 || ip->major >= NDEV || !devsw[ip->m\
-ajor].read\)) 318.902 Tj
-0 -113.92 Td
+ajor].read\)) 318.9016 Tj
+0 -113.9203 Td
(4109 return -1;) 91.7388 Tj
-0 -123.414 Td
-(4110 return devsw[ip->major].read\(ip, dst, n\);) 218.426 Tj
-0 -132.907 Td
+0 -123.4137 Td
+(4110 return devsw[ip->major].read\(ip, dst, n\);) 218.4257 Tj
+0 -132.9071 Td
(4111 }) 34.9481 Tj
-0 -142.4 Td
+0 -142.4004 Td
(4112 ) 21.8426 Tj
-0 -151.894 Td
-(4113 if\(off > ip->size || off + n < off\)) 183.478 Tj
-0 -161.387 Td
+0 -151.8938 Td
+(4113 if\(off > ip->size || off + n < off\)) 183.4776 Tj
+0 -161.3871 Td
(4114 return -1;) 83.0018 Tj
-0 -170.88 Td
-(4115 if\(off + n > ip->size\)) 126.687 Tj
-0 -180.374 Td
-(4116 n = ip->size - off;) 122.318 Tj
-0 -189.867 Td
+0 -170.8805 Td
+(4115 if\(off + n > ip->size\)) 126.6869 Tj
+0 -180.3739 Td
+(4116 n = ip->size - off;) 122.3184 Tj
+0 -189.8672 Td
(4117 ) 21.8426 Tj
-0 -199.361 Td
-(4118 for\(tot=0; tot<n; tot+=m, off+=m, dst+=m\){) 214.057 Tj
-0 -208.854 Td
-(4119 bp = bread\(ip->dev, bmap\(ip, off/BSIZE, 0\)\);) 231.531 Tj
-0 -218.347 Td
-(4120 m = min\(n - tot, BSIZE - off%BSIZE\);) 196.583 Tj
-0 -227.841 Td
-(4121 memmove\(dst, bp->data + off%BSIZE, m\);) 205.32 Tj
+0 -199.3606 Td
+(4118 for\(tot=0; tot<n; tot+=m, off+=m, dst+=m\){) 214.0572 Tj
+0 -208.8539 Td
+(4119 bp = bread\(ip->dev, bmap\(ip, off/BSIZE, 0\)\);) 231.5313 Tj
+0 -218.3473 Td
+(4120 m = min\(n - tot, BSIZE - off%BSIZE\);) 196.5831 Tj
+0 -227.8407 Td
+(4121 memmove\(dst, bp->data + off%BSIZE, m\);) 205.3202 Tj
0 -237.334 Td
(4122 brelse\(bp\);) 87.3703 Tj
-0 -246.827 Td
+0 -246.8274 Td
(4123 }) 34.9481 Tj
-0 -256.321 Td
+0 -256.3207 Td
(4124 return n;) 69.8962 Tj
-0 -265.814 Td
+0 -265.8141 Td
(4125 }) 26.2111 Tj
-0 -275.307 Td
+0 -275.3075 Td
(4126 ) 21.8426 Tj
-0 -284.801 Td
+0 -284.8008 Td
(4127 ) 21.8426 Tj
-0 -294.294 Td
+0 -294.2942 Td
(4128 ) 21.8426 Tj
-0 -303.788 Td
+0 -303.7875 Td
(4129 ) 21.8426 Tj
-0 -313.281 Td
+0 -313.2809 Td
(4130 ) 21.8426 Tj
-0 -322.774 Td
+0 -322.7743 Td
(4131 ) 21.8426 Tj
-0 -332.268 Td
+0 -332.2676 Td
(4132 ) 21.8426 Tj
0 -341.761 Td
(4133 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(4134 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(4135 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(4136 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(4137 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(4138 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(4139 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(4140 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(4141 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(4142 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(4143 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4144 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4145 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4146 ) 21.8426 Tj
0 -474.668 Td
(4147 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4148 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4149 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 41) 34.9481 Tj
Q
Q
@@ -14924,16 +14917,16 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/fs.c Page 11) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/fs.c Page 11) 157.2665 Tj
0 -28.4801 Td
-(4150 // Write data to inode.) 122.318 Tj
+(4150 // Write data to inode.) 122.3184 Tj
0 -37.9735 Td
(4151 int) 34.9481 Tj
0 -47.4668 Td
-(4152 writei\(struct inode *ip, char *src, uint off, uint n\)) 253.374 Tj
+(4152 writei\(struct inode *ip, char *src, uint off, uint n\)) 253.3738 Tj
0 -56.9602 Td
(4153 {) 26.2111 Tj
0 -66.4535 Td
@@ -14943,93 +14936,93 @@ q
0 -85.4403 Td
(4156 ) 21.8426 Tj
0 -94.9336 Td
-(4157 if\(ip->type == T_DEV\){) 126.687 Tj
+(4157 if\(ip->type == T_DEV\){) 126.6869 Tj
0 -104.427 Td
(4158 if\(ip->major < 0 || ip->major >= NDEV || !devsw[ip->m\
-ajor].write\)) 323.27 Tj
-0 -113.92 Td
+ajor].write\)) 323.2701 Tj
+0 -113.9203 Td
(4159 return -1;) 91.7388 Tj
-0 -123.414 Td
-(4160 return devsw[ip->major].write\(ip, src, n\);) 222.794 Tj
-0 -132.907 Td
+0 -123.4137 Td
+(4160 return devsw[ip->major].write\(ip, src, n\);) 222.7942 Tj
+0 -132.9071 Td
(4161 }) 34.9481 Tj
-0 -142.4 Td
+0 -142.4004 Td
(4162 ) 21.8426 Tj
-0 -151.894 Td
-(4163 if\(off + n < off\)) 104.844 Tj
-0 -161.387 Td
+0 -151.8938 Td
+(4163 if\(off + n < off\)) 104.8443 Tj
+0 -161.3871 Td
(4164 return -1;) 83.0018 Tj
-0 -170.88 Td
-(4165 if\(off + n > MAXFILE*BSIZE\)) 148.529 Tj
-0 -180.374 Td
+0 -170.8805 Td
+(4165 if\(off + n > MAXFILE*BSIZE\)) 148.5295 Tj
+0 -180.3739 Td
(4166 n = MAXFILE*BSIZE - off;) 144.161 Tj
-0 -189.867 Td
+0 -189.8672 Td
(4167 ) 21.8426 Tj
-0 -199.361 Td
-(4168 for\(tot=0; tot<n; tot+=m, off+=m, src+=m\){) 214.057 Tj
-0 -208.854 Td
-(4169 bp = bread\(ip->dev, bmap\(ip, off/BSIZE, 1\)\);) 231.531 Tj
-0 -218.347 Td
-(4170 m = min\(n - tot, BSIZE - off%BSIZE\);) 196.583 Tj
-0 -227.841 Td
-(4171 memmove\(bp->data + off%BSIZE, src, m\);) 205.32 Tj
+0 -199.3606 Td
+(4168 for\(tot=0; tot<n; tot+=m, off+=m, src+=m\){) 214.0572 Tj
+0 -208.8539 Td
+(4169 bp = bread\(ip->dev, bmap\(ip, off/BSIZE, 1\)\);) 231.5313 Tj
+0 -218.3473 Td
+(4170 m = min\(n - tot, BSIZE - off%BSIZE\);) 196.5831 Tj
+0 -227.8407 Td
+(4171 memmove\(bp->data + off%BSIZE, src, m\);) 205.3202 Tj
0 -237.334 Td
(4172 bwrite\(bp\);) 87.3703 Tj
-0 -246.827 Td
+0 -246.8274 Td
(4173 brelse\(bp\);) 87.3703 Tj
-0 -256.321 Td
+0 -256.3207 Td
(4174 }) 34.9481 Tj
-0 -265.814 Td
+0 -265.8141 Td
(4175 ) 21.8426 Tj
-0 -275.307 Td
+0 -275.3075 Td
(4176 if\(n > 0 && off > ip->size\){) 152.898 Tj
-0 -284.801 Td
-(4177 ip->size = off;) 104.844 Tj
-0 -294.294 Td
+0 -284.8008 Td
+(4177 ip->size = off;) 104.8443 Tj
+0 -294.2942 Td
(4178 iupdate\(ip\);) 91.7388 Tj
-0 -303.788 Td
+0 -303.7875 Td
(4179 }) 34.9481 Tj
-0 -313.281 Td
+0 -313.2809 Td
(4180 return n;) 69.8962 Tj
-0 -322.774 Td
+0 -322.7743 Td
(4181 }) 26.2111 Tj
-0 -332.268 Td
+0 -332.2676 Td
(4182 ) 21.8426 Tj
0 -341.761 Td
(4183 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(4184 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(4185 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(4186 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(4187 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(4188 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(4189 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(4190 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(4191 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(4192 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(4193 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4194 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4195 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4196 ) 21.8426 Tj
0 -474.668 Td
(4197 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4198 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4199 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 41) 34.9481 Tj
Q
Q
@@ -15058,8 +15051,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -15074,10 +15066,10 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/fs.c Page 12) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/fs.c Page 12) 157.2665 Tj
0 -28.4801 Td
(4200 // Directories) 83.0018 Tj
0 -37.9735 Td
@@ -15085,100 +15077,100 @@ q
0 -47.4668 Td
(4202 int) 34.9481 Tj
0 -56.9602 Td
-(4203 namecmp\(const char *s, const char *t\)) 183.478 Tj
+(4203 namecmp\(const char *s, const char *t\)) 183.4776 Tj
0 -66.4535 Td
(4204 {) 26.2111 Tj
0 -75.9469 Td
-(4205 return strncmp\(s, t, DIRSIZ\);) 157.267 Tj
+(4205 return strncmp\(s, t, DIRSIZ\);) 157.2665 Tj
0 -85.4403 Td
(4206 }) 26.2111 Tj
0 -94.9336 Td
(4207 ) 21.8426 Tj
0 -104.427 Td
-(4208 // Look for a directory entry in a directory.) 218.426 Tj
-0 -113.92 Td
-(4209 // If found, set *poff to byte offset of entry.) 227.163 Tj
-0 -123.414 Td
-(4210 // Caller must have already locked dp.) 187.846 Tj
-0 -132.907 Td
+(4208 // Look for a directory entry in a directory.) 218.4257 Tj
+0 -113.9203 Td
+(4209 // If found, set *poff to byte offset of entry.) 227.1628 Tj
+0 -123.4137 Td
+(4210 // Caller must have already locked dp.) 187.8461 Tj
+0 -132.9071 Td
(4211 struct inode*) 78.6333 Tj
-0 -142.4 Td
-(4212 dirlookup\(struct inode *dp, char *name, uint *poff\)) 244.637 Tj
-0 -151.894 Td
+0 -142.4004 Td
+(4212 dirlookup\(struct inode *dp, char *name, uint *poff\)) 244.6368 Tj
+0 -151.8938 Td
(4213 {) 26.2111 Tj
-0 -161.387 Td
+0 -161.3871 Td
(4214 uint off, inum;) 96.1073 Tj
-0 -170.88 Td
+0 -170.8805 Td
(4215 struct buf *bp;) 96.1073 Tj
-0 -180.374 Td
-(4216 struct dirent *de;) 109.213 Tj
-0 -189.867 Td
+0 -180.3739 Td
+(4216 struct dirent *de;) 109.2129 Tj
+0 -189.8672 Td
(4217 ) 21.8426 Tj
-0 -199.361 Td
-(4218 if\(dp->type != T_DIR\)) 122.318 Tj
-0 -208.854 Td
-(4219 panic\("dirlookup not DIR"\);) 157.267 Tj
-0 -218.347 Td
+0 -199.3606 Td
+(4218 if\(dp->type != T_DIR\)) 122.3184 Tj
+0 -208.8539 Td
+(4219 panic\("dirlookup not DIR"\);) 157.2665 Tj
+0 -218.3473 Td
(4220 ) 21.8426 Tj
-0 -227.841 Td
-(4221 for\(off = 0; off < dp->size; off += BSIZE\){) 218.426 Tj
+0 -227.8407 Td
+(4221 for\(off = 0; off < dp->size; off += BSIZE\){) 218.4257 Tj
0 -237.334 Td
-(4222 bp = bread\(dp->dev, bmap\(dp, off / BSIZE, 0\)\);) 240.268 Tj
-0 -246.827 Td
-(4223 for\(de = \(struct dirent*\)bp->data;) 187.846 Tj
-0 -256.321 Td
-(4224 de < \(struct dirent*\)\(bp->data + BSIZE\);) 231.531 Tj
-0 -265.814 Td
+(4222 bp = bread\(dp->dev, bmap\(dp, off / BSIZE, 0\)\);) 240.2683 Tj
+0 -246.8274 Td
+(4223 for\(de = \(struct dirent*\)bp->data;) 187.8461 Tj
+0 -256.3207 Td
+(4224 de < \(struct dirent*\)\(bp->data + BSIZE\);) 231.5313 Tj
+0 -265.8141 Td
(4225 de++\){) 83.0018 Tj
-0 -275.307 Td
-(4226 if\(de->inum == 0\)) 122.318 Tj
-0 -284.801 Td
+0 -275.3075 Td
+(4226 if\(de->inum == 0\)) 122.3184 Tj
+0 -284.8008 Td
(4227 continue;) 96.1073 Tj
-0 -294.294 Td
-(4228 if\(namecmp\(name, de->name\) == 0\){) 192.215 Tj
-0 -303.788 Td
-(4229 // entry matches path element) 183.478 Tj
-0 -313.281 Td
+0 -294.2942 Td
+(4228 if\(namecmp\(name, de->name\) == 0\){) 192.2146 Tj
+0 -303.7875 Td
+(4229 // entry matches path element) 183.4776 Tj
+0 -313.2809 Td
(4230 if\(poff\)) 91.7388 Tj
-0 -322.774 Td
-(4231 *poff = off + \(uchar*\)de - bp->data;) 222.794 Tj
-0 -332.268 Td
-(4232 inum = de->inum;) 126.687 Tj
+0 -322.7743 Td
+(4231 *poff = off + \(uchar*\)de - bp->data;) 222.7942 Tj
+0 -332.2676 Td
+(4232 inum = de->inum;) 126.6869 Tj
0 -341.761 Td
-(4233 brelse\(bp\);) 104.844 Tj
-0 -351.254 Td
-(4234 return iget\(dp->dev, inum\);) 174.741 Tj
-0 -360.748 Td
+(4233 brelse\(bp\);) 104.8443 Tj
+0 -351.2543 Td
+(4234 return iget\(dp->dev, inum\);) 174.7406 Tj
+0 -360.7477 Td
(4235 }) 52.4222 Tj
-0 -370.241 Td
+0 -370.2411 Td
(4236 }) 43.6851 Tj
-0 -379.734 Td
+0 -379.7344 Td
(4237 brelse\(bp\);) 87.3703 Tj
-0 -389.228 Td
+0 -389.2278 Td
(4238 }) 34.9481 Tj
-0 -398.721 Td
+0 -398.7211 Td
(4239 return 0;) 69.8962 Tj
-0 -408.214 Td
+0 -408.2145 Td
(4240 }) 26.2111 Tj
-0 -417.708 Td
+0 -417.7079 Td
(4241 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(4242 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(4243 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4244 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4245 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4246 ) 21.8426 Tj
0 -474.668 Td
(4247 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4248 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4249 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 42) 34.9481 Tj
Q
Q
@@ -15193,114 +15185,114 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/fs.c Page 13) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/fs.c Page 13) 157.2665 Tj
0 -28.4801 Td
(4250 // Write a new directory entry \(name, ino\) into the dire\
ctory dp.) 305.796 Tj
0 -37.9735 Td
(4251 int) 34.9481 Tj
0 -47.4668 Td
-(4252 dirlink\(struct inode *dp, char *name, uint ino\)) 227.163 Tj
+(4252 dirlink\(struct inode *dp, char *name, uint ino\)) 227.1628 Tj
0 -56.9602 Td
(4253 {) 26.2111 Tj
0 -66.4535 Td
(4254 int off;) 65.5277 Tj
0 -75.9469 Td
-(4255 struct dirent de;) 104.844 Tj
+(4255 struct dirent de;) 104.8443 Tj
0 -85.4403 Td
-(4256 struct inode *ip;) 104.844 Tj
+(4256 struct inode *ip;) 104.8443 Tj
0 -94.9336 Td
(4257 ) 21.8426 Tj
0 -104.427 Td
-(4258 // Check that name is not present.) 179.109 Tj
-0 -113.92 Td
-(4259 if\(\(ip = dirlookup\(dp, name, 0\)\) != 0\){) 200.952 Tj
-0 -123.414 Td
+(4258 // Check that name is not present.) 179.1091 Tj
+0 -113.9203 Td
+(4259 if\(\(ip = dirlookup\(dp, name, 0\)\) != 0\){) 200.9517 Tj
+0 -123.4137 Td
(4260 iput\(ip\);) 78.6333 Tj
-0 -132.907 Td
+0 -132.9071 Td
(4261 return -1;) 83.0018 Tj
-0 -142.4 Td
+0 -142.4004 Td
(4262 }) 34.9481 Tj
-0 -151.894 Td
+0 -151.8938 Td
(4263 ) 21.8426 Tj
-0 -161.387 Td
+0 -161.3871 Td
(4264 // Look for an empty dirent.) 152.898 Tj
-0 -170.88 Td
-(4265 for\(off = 0; off < dp->size; off += sizeof\(de\)\){) 240.268 Tj
-0 -180.374 Td
+0 -170.8805 Td
+(4265 for\(off = 0; off < dp->size; off += sizeof\(de\)\){) 240.2683 Tj
+0 -180.3739 Td
(4266 if\(readi\(dp, \(char*\)&de, off, sizeof\(de\)\) != si\
-zeof\(de\)\)) 283.953 Tj
-0 -189.867 Td
+zeof\(de\)\)) 283.9534 Tj
+0 -189.8672 Td
(4267 panic\("dirlink read"\);) 144.161 Tj
-0 -199.361 Td
-(4268 if\(de.inum == 0\)) 109.213 Tj
-0 -208.854 Td
+0 -199.3606 Td
+(4268 if\(de.inum == 0\)) 109.2129 Tj
+0 -208.8539 Td
(4269 break;) 74.2647 Tj
-0 -218.347 Td
+0 -218.3473 Td
(4270 }) 34.9481 Tj
-0 -227.841 Td
+0 -227.8407 Td
(4271 ) 21.8426 Tj
0 -237.334 Td
-(4272 strncpy\(de.name, name, DIRSIZ\);) 166.004 Tj
-0 -246.827 Td
+(4272 strncpy\(de.name, name, DIRSIZ\);) 166.0035 Tj
+0 -246.8274 Td
(4273 de.inum = ino;) 91.7388 Tj
-0 -256.321 Td
+0 -256.3207 Td
(4274 if\(writei\(dp, \(char*\)&de, off, sizeof\(de\)\) != siz\
-eof\(de\)\)) 279.585 Tj
-0 -265.814 Td
-(4275 panic\("dirlink"\);) 113.581 Tj
-0 -275.307 Td
+eof\(de\)\)) 279.5849 Tj
+0 -265.8141 Td
+(4275 panic\("dirlink"\);) 113.5814 Tj
+0 -275.3075 Td
(4276 ) 21.8426 Tj
-0 -284.801 Td
+0 -284.8008 Td
(4277 return 0;) 69.8962 Tj
-0 -294.294 Td
+0 -294.2942 Td
(4278 }) 26.2111 Tj
-0 -303.788 Td
+0 -303.7875 Td
(4279 ) 21.8426 Tj
-0 -313.281 Td
+0 -313.2809 Td
(4280 ) 21.8426 Tj
-0 -322.774 Td
+0 -322.7743 Td
(4281 ) 21.8426 Tj
-0 -332.268 Td
+0 -332.2676 Td
(4282 ) 21.8426 Tj
0 -341.761 Td
(4283 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(4284 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(4285 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(4286 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(4287 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(4288 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(4289 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(4290 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(4291 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(4292 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(4293 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4294 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4295 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4296 ) 21.8426 Tj
0 -474.668 Td
(4297 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4298 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4299 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 42) 34.9481 Tj
Q
Q
@@ -15329,8 +15321,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -15345,115 +15336,115 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/fs.c Page 14) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/fs.c Page 14) 157.2665 Tj
0 -28.4801 Td
(4300 // Paths) 56.7907 Tj
0 -37.9735 Td
(4301 ) 21.8426 Tj
0 -47.4668 Td
-(4302 // Copy the next path element from path into name.) 240.268 Tj
+(4302 // Copy the next path element from path into name.) 240.2683 Tj
0 -56.9602 Td
(4303 // Return a pointer to the element following the copied on\
-e.) 283.953 Tj
+e.) 283.9534 Tj
0 -66.4535 Td
-(4304 // The returned path has no leading slashes,) 214.057 Tj
+(4304 // The returned path has no leading slashes,) 214.0572 Tj
0 -75.9469 Td
(4305 // so the caller can check *path=='\\0' to see if the name\
- is the last one.) 345.113 Tj
+ is the last one.) 345.1126 Tj
0 -85.4403 Td
-(4306 // If no name to remove, return 0.) 170.372 Tj
+(4306 // If no name to remove, return 0.) 170.3721 Tj
0 -94.9336 Td
(4307 //) 30.5796 Tj
0 -104.427 Td
(4308 // Examples:) 74.2647 Tj
-0 -113.92 Td
+0 -113.9203 Td
(4309 // skipelem\("a/bb/c", name\) = "bb/c", setting name = "\
-a") 275.216 Tj
-0 -123.414 Td
+a") 275.2164 Tj
+0 -123.4137 Td
(4310 // skipelem\("///a//bb", name\) = "bb", setting name = "\
-a") 275.216 Tj
-0 -132.907 Td
-(4311 // skipelem\("", name\) = skipelem\("////", name\) = 0) 249.005 Tj
-0 -142.4 Td
+a") 275.2164 Tj
+0 -132.9071 Td
+(4311 // skipelem\("", name\) = skipelem\("////", name\) = 0) 249.0053 Tj
+0 -142.4004 Td
(4312 //) 30.5796 Tj
-0 -151.894 Td
+0 -151.8938 Td
(4313 static char*) 74.2647 Tj
-0 -161.387 Td
+0 -161.3871 Td
(4314 skipelem\(char *path, char *name\)) 161.635 Tj
-0 -170.88 Td
+0 -170.8805 Td
(4315 {) 26.2111 Tj
-0 -180.374 Td
+0 -180.3739 Td
(4316 char *s;) 65.5277 Tj
-0 -189.867 Td
+0 -189.8672 Td
(4317 int len;) 65.5277 Tj
-0 -199.361 Td
+0 -199.3606 Td
(4318 ) 21.8426 Tj
-0 -208.854 Td
-(4319 while\(*path == '/'\)) 113.581 Tj
-0 -218.347 Td
+0 -208.8539 Td
+(4319 while\(*path == '/'\)) 113.5814 Tj
+0 -218.3473 Td
(4320 path++;) 69.8962 Tj
-0 -227.841 Td
+0 -227.8407 Td
(4321 if\(*path == 0\)) 91.7388 Tj
0 -237.334 Td
(4322 return 0;) 78.6333 Tj
-0 -246.827 Td
+0 -246.8274 Td
(4323 s = path;) 69.8962 Tj
-0 -256.321 Td
-(4324 while\(*path != '/' && *path != 0\)) 174.741 Tj
-0 -265.814 Td
+0 -256.3207 Td
+(4324 while\(*path != '/' && *path != 0\)) 174.7406 Tj
+0 -265.8141 Td
(4325 path++;) 69.8962 Tj
-0 -275.307 Td
+0 -275.3075 Td
(4326 len = path - s;) 96.1073 Tj
-0 -284.801 Td
-(4327 if\(len >= DIRSIZ\)) 104.844 Tj
-0 -294.294 Td
-(4328 memmove\(name, s, DIRSIZ\);) 148.529 Tj
-0 -303.788 Td
+0 -284.8008 Td
+(4327 if\(len >= DIRSIZ\)) 104.8443 Tj
+0 -294.2942 Td
+(4328 memmove\(name, s, DIRSIZ\);) 148.5295 Tj
+0 -303.7875 Td
(4329 else {) 56.7907 Tj
-0 -313.281 Td
-(4330 memmove\(name, s, len\);) 135.424 Tj
-0 -322.774 Td
-(4331 name[len] = 0;) 100.476 Tj
-0 -332.268 Td
+0 -313.2809 Td
+(4330 memmove\(name, s, len\);) 135.4239 Tj
+0 -322.7743 Td
+(4331 name[len] = 0;) 100.4758 Tj
+0 -332.2676 Td
(4332 }) 34.9481 Tj
0 -341.761 Td
-(4333 while\(*path == '/'\)) 113.581 Tj
-0 -351.254 Td
+(4333 while\(*path == '/'\)) 113.5814 Tj
+0 -351.2543 Td
(4334 path++;) 69.8962 Tj
-0 -360.748 Td
+0 -360.7477 Td
(4335 return path;) 83.0018 Tj
-0 -370.241 Td
+0 -370.2411 Td
(4336 }) 26.2111 Tj
-0 -379.734 Td
+0 -379.7344 Td
(4337 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(4338 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(4339 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(4340 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(4341 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(4342 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(4343 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4344 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4345 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4346 ) 21.8426 Tj
0 -474.668 Td
(4347 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4348 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4349 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 43) 34.9481 Tj
Q
Q
@@ -15468,113 +15459,113 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/fs.c Page 15) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/fs.c Page 15) 157.2665 Tj
0 -28.4801 Td
-(4350 // Look up and return the inode for a path name.) 231.531 Tj
+(4350 // Look up and return the inode for a path name.) 231.5313 Tj
0 -37.9735 Td
(4351 // If parent != 0, return the inode for the parent and cop\
-y the final) 323.27 Tj
+y the final) 323.2701 Tj
0 -47.4668 Td
(4352 // path element into name, which must have room for DIRSIZ\
bytes.) 305.796 Tj
0 -56.9602 Td
-(4353 static struct inode*) 109.213 Tj
+(4353 static struct inode*) 109.2129 Tj
0 -66.4535 Td
-(4354 _namei\(char *path, int parent, char *name\)) 205.32 Tj
+(4354 _namei\(char *path, int parent, char *name\)) 205.3202 Tj
0 -75.9469 Td
(4355 {) 26.2111 Tj
0 -85.4403 Td
-(4356 struct inode *ip, *next;) 135.424 Tj
+(4356 struct inode *ip, *next;) 135.4239 Tj
0 -94.9336 Td
(4357 ) 21.8426 Tj
0 -104.427 Td
-(4358 if\(*path == '/'\)) 100.476 Tj
-0 -113.92 Td
-(4359 ip = iget\(ROOTDEV, 1\);) 135.424 Tj
-0 -123.414 Td
+(4358 if\(*path == '/'\)) 100.4758 Tj
+0 -113.9203 Td
+(4359 ip = iget\(ROOTDEV, 1\);) 135.4239 Tj
+0 -123.4137 Td
(4360 else) 48.0537 Tj
-0 -132.907 Td
-(4361 ip = idup\(cp->cwd\);) 122.318 Tj
-0 -142.4 Td
+0 -132.9071 Td
+(4361 ip = idup\(cp->cwd\);) 122.3184 Tj
+0 -142.4004 Td
(4362 ) 21.8426 Tj
-0 -151.894 Td
-(4363 while\(\(path = skipelem\(path, name\)\) != 0\){) 214.057 Tj
-0 -161.387 Td
+0 -151.8938 Td
+(4363 while\(\(path = skipelem\(path, name\)\) != 0\){) 214.0572 Tj
+0 -161.3871 Td
(4364 ilock\(ip\);) 83.0018 Tj
-0 -170.88 Td
-(4365 if\(ip->type != T_DIR\){) 135.424 Tj
-0 -180.374 Td
-(4366 iunlockput\(ip\);) 113.581 Tj
-0 -189.867 Td
+0 -170.8805 Td
+(4365 if\(ip->type != T_DIR\){) 135.4239 Tj
+0 -180.3739 Td
+(4366 iunlockput\(ip\);) 113.5814 Tj
+0 -189.8672 Td
(4367 return 0;) 87.3703 Tj
-0 -199.361 Td
+0 -199.3606 Td
(4368 }) 43.6851 Tj
-0 -208.854 Td
+0 -208.8539 Td
(4369 if\(parent && *path == '\\0'\){) 161.635 Tj
-0 -218.347 Td
+0 -218.3473 Td
(4370 // Stop one level early.) 152.898 Tj
-0 -227.841 Td
-(4371 iunlock\(ip\);) 100.476 Tj
+0 -227.8407 Td
+(4371 iunlock\(ip\);) 100.4758 Tj
0 -237.334 Td
(4372 return ip;) 91.7388 Tj
-0 -246.827 Td
+0 -246.8274 Td
(4373 }) 43.6851 Tj
-0 -256.321 Td
-(4374 if\(\(next = dirlookup\(ip, name, 0\)\) == 0\){) 218.426 Tj
-0 -265.814 Td
-(4375 iunlockput\(ip\);) 113.581 Tj
-0 -275.307 Td
+0 -256.3207 Td
+(4374 if\(\(next = dirlookup\(ip, name, 0\)\) == 0\){) 218.4257 Tj
+0 -265.8141 Td
+(4375 iunlockput\(ip\);) 113.5814 Tj
+0 -275.3075 Td
(4376 return 0;) 87.3703 Tj
-0 -284.801 Td
+0 -284.8008 Td
(4377 }) 43.6851 Tj
-0 -294.294 Td
-(4378 iunlockput\(ip\);) 104.844 Tj
-0 -303.788 Td
+0 -294.2942 Td
+(4378 iunlockput\(ip\);) 104.8443 Tj
+0 -303.7875 Td
(4379 ip = next;) 83.0018 Tj
-0 -313.281 Td
+0 -313.2809 Td
(4380 }) 34.9481 Tj
-0 -322.774 Td
+0 -322.7743 Td
(4381 if\(parent\){) 78.6333 Tj
-0 -332.268 Td
+0 -332.2676 Td
(4382 iput\(ip\);) 78.6333 Tj
0 -341.761 Td
(4383 return 0;) 78.6333 Tj
-0 -351.254 Td
+0 -351.2543 Td
(4384 }) 34.9481 Tj
-0 -360.748 Td
+0 -360.7477 Td
(4385 return ip;) 74.2647 Tj
-0 -370.241 Td
+0 -370.2411 Td
(4386 }) 26.2111 Tj
-0 -379.734 Td
+0 -379.7344 Td
(4387 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(4388 struct inode*) 78.6333 Tj
-0 -398.721 Td
+0 -398.7211 Td
(4389 namei\(char *path\)) 96.1073 Tj
-0 -408.214 Td
+0 -408.2145 Td
(4390 {) 26.2111 Tj
-0 -417.708 Td
-(4391 char name[DIRSIZ];) 109.213 Tj
-0 -427.201 Td
-(4392 return _namei\(path, 0, name\);) 157.267 Tj
-0 -436.695 Td
+0 -417.7079 Td
+(4391 char name[DIRSIZ];) 109.2129 Tj
+0 -427.2012 Td
+(4392 return _namei\(path, 0, name\);) 157.2665 Tj
+0 -436.6946 Td
(4393 }) 26.2111 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4394 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4395 struct inode*) 78.6333 Tj
-0 -465.175 Td
-(4396 nameiparent\(char *path, char *name\)) 174.741 Tj
+0 -465.1747 Td
+(4396 nameiparent\(char *path, char *name\)) 174.7406 Tj
0 -474.668 Td
(4397 {) 26.2111 Tj
-0 -484.161 Td
-(4398 return _namei\(path, 1, name\);) 157.267 Tj
-0 -493.655 Td
+0 -484.1614 Td
+(4398 return _namei\(path, 1, name\);) 157.2665 Tj
+0 -493.6547 Td
(4399 }) 26.2111 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 43) 34.9481 Tj
Q
Q
@@ -15603,8 +15594,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -15619,111 +15609,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/file.c Page 1) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/file.c Page 1) 161.635 Tj
0 -28.4801 Td
-(4400 #include "types.h") 100.476 Tj
+(4400 #include "types.h") 100.4758 Tj
0 -37.9735 Td
(4401 #include "defs.h") 96.1073 Tj
0 -47.4668 Td
-(4402 #include "param.h") 100.476 Tj
+(4402 #include "param.h") 100.4758 Tj
0 -56.9602 Td
(4403 #include "file.h") 96.1073 Tj
0 -66.4535 Td
-(4404 #include "spinlock.h") 113.581 Tj
+(4404 #include "spinlock.h") 113.5814 Tj
0 -75.9469 Td
(4405 #include "dev.h") 91.7388 Tj
0 -85.4403 Td
(4406 ) 21.8426 Tj
0 -94.9336 Td
-(4407 struct devsw devsw[NDEV];) 131.055 Tj
+(4407 struct devsw devsw[NDEV];) 131.0554 Tj
0 -104.427 Td
(4408 struct spinlock file_table_lock;) 161.635 Tj
-0 -113.92 Td
-(4409 struct file file[NFILE];) 126.687 Tj
-0 -123.414 Td
+0 -113.9203 Td
+(4409 struct file file[NFILE];) 126.6869 Tj
+0 -123.4137 Td
(4410 ) 21.8426 Tj
-0 -132.907 Td
+0 -132.9071 Td
(4411 void) 39.3166 Tj
-0 -142.4 Td
+0 -142.4004 Td
(4412 fileinit\(void\)) 83.0018 Tj
-0 -151.894 Td
+0 -151.8938 Td
(4413 {) 26.2111 Tj
-0 -161.387 Td
-(4414 initlock\(&file_table_lock, "file_table"\);) 209.689 Tj
-0 -170.88 Td
+0 -161.3871 Td
+(4414 initlock\(&file_table_lock, "file_table"\);) 209.6887 Tj
+0 -170.8805 Td
(4415 }) 26.2111 Tj
-0 -180.374 Td
+0 -180.3739 Td
(4416 ) 21.8426 Tj
-0 -189.867 Td
-(4417 // Allocate a file structure.) 148.529 Tj
-0 -199.361 Td
+0 -189.8672 Td
+(4417 // Allocate a file structure.) 148.5295 Tj
+0 -199.3606 Td
(4418 struct file*) 74.2647 Tj
-0 -208.854 Td
+0 -208.8539 Td
(4419 filealloc\(void\)) 87.3703 Tj
-0 -218.347 Td
+0 -218.3473 Td
(4420 {) 26.2111 Tj
-0 -227.841 Td
+0 -227.8407 Td
(4421 int i;) 56.7907 Tj
0 -237.334 Td
(4422 ) 21.8426 Tj
-0 -246.827 Td
+0 -246.8274 Td
(4423 acquire\(&file_table_lock\);) 144.161 Tj
-0 -256.321 Td
-(4424 for\(i = 0; i < NFILE; i++\){) 148.529 Tj
-0 -265.814 Td
-(4425 if\(file[i].type == FD_CLOSED\){) 170.372 Tj
-0 -275.307 Td
-(4426 file[i].type = FD_NONE;) 148.529 Tj
-0 -284.801 Td
-(4427 file[i].ref = 1;) 117.95 Tj
-0 -294.294 Td
+0 -256.3207 Td
+(4424 for\(i = 0; i < NFILE; i++\){) 148.5295 Tj
+0 -265.8141 Td
+(4425 if\(file[i].type == FD_CLOSED\){) 170.3721 Tj
+0 -275.3075 Td
+(4426 file[i].type = FD_NONE;) 148.5295 Tj
+0 -284.8008 Td
+(4427 file[i].ref = 1;) 117.9499 Tj
+0 -294.2942 Td
(4428 release\(&file_table_lock\);) 161.635 Tj
-0 -303.788 Td
-(4429 return file + i;) 117.95 Tj
-0 -313.281 Td
+0 -303.7875 Td
+(4429 return file + i;) 117.9499 Tj
+0 -313.2809 Td
(4430 }) 43.6851 Tj
-0 -322.774 Td
+0 -322.7743 Td
(4431 }) 34.9481 Tj
-0 -332.268 Td
+0 -332.2676 Td
(4432 release\(&file_table_lock\);) 144.161 Tj
0 -341.761 Td
(4433 return 0;) 69.8962 Tj
-0 -351.254 Td
+0 -351.2543 Td
(4434 }) 26.2111 Tj
-0 -360.748 Td
+0 -360.7477 Td
(4435 ) 21.8426 Tj
-0 -370.241 Td
-(4436 // Increment ref count for file f.) 170.372 Tj
-0 -379.734 Td
+0 -370.2411 Td
+(4436 // Increment ref count for file f.) 170.3721 Tj
+0 -379.7344 Td
(4437 struct file*) 74.2647 Tj
-0 -389.228 Td
-(4438 filedup\(struct file *f\)) 122.318 Tj
-0 -398.721 Td
+0 -389.2278 Td
+(4438 filedup\(struct file *f\)) 122.3184 Tj
+0 -398.7211 Td
(4439 {) 26.2111 Tj
-0 -408.214 Td
+0 -408.2145 Td
(4440 acquire\(&file_table_lock\);) 144.161 Tj
-0 -417.708 Td
-(4441 if\(f->ref < 1 || f->type == FD_CLOSED\)) 196.583 Tj
-0 -427.201 Td
-(4442 panic\("filedup"\);) 113.581 Tj
-0 -436.695 Td
+0 -417.7079 Td
+(4441 if\(f->ref < 1 || f->type == FD_CLOSED\)) 196.5831 Tj
+0 -427.2012 Td
+(4442 panic\("filedup"\);) 113.5814 Tj
+0 -436.6946 Td
(4443 f->ref++;) 69.8962 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4444 release\(&file_table_lock\);) 144.161 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4445 return f;) 69.8962 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4446 }) 26.2111 Tj
0 -474.668 Td
(4447 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4448 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4449 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 44) 34.9481 Tj
Q
Q
@@ -15738,17 +15728,17 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/file.c Page 2) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/file.c Page 2) 161.635 Tj
0 -28.4801 Td
(4450 // Close file f. \(Decrement ref count, close when reache\
-s 0.\)) 292.69 Tj
+s 0.\)) 292.6905 Tj
0 -37.9735 Td
(4451 void) 39.3166 Tj
0 -47.4668 Td
-(4452 fileclose\(struct file *f\)) 131.055 Tj
+(4452 fileclose\(struct file *f\)) 131.0554 Tj
0 -56.9602 Td
(4453 {) 26.2111 Tj
0 -66.4535 Td
@@ -15758,92 +15748,92 @@ s 0.\)) 292.69 Tj
0 -85.4403 Td
(4456 acquire\(&file_table_lock\);) 144.161 Tj
0 -94.9336 Td
-(4457 if\(f->ref < 1 || f->type == FD_CLOSED\)) 196.583 Tj
+(4457 if\(f->ref < 1 || f->type == FD_CLOSED\)) 196.5831 Tj
0 -104.427 Td
-(4458 panic\("fileclose"\);) 122.318 Tj
-0 -113.92 Td
-(4459 if\(--f->ref > 0\){) 104.844 Tj
-0 -123.414 Td
+(4458 panic\("fileclose"\);) 122.3184 Tj
+0 -113.9203 Td
+(4459 if\(--f->ref > 0\){) 104.8443 Tj
+0 -123.4137 Td
(4460 release\(&file_table_lock\);) 152.898 Tj
-0 -132.907 Td
+0 -132.9071 Td
(4461 return;) 69.8962 Tj
-0 -142.4 Td
+0 -142.4004 Td
(4462 }) 34.9481 Tj
-0 -151.894 Td
+0 -151.8938 Td
(4463 ff = *f;) 65.5277 Tj
-0 -161.387 Td
+0 -161.3871 Td
(4464 f->ref = 0;) 78.6333 Tj
-0 -170.88 Td
-(4465 f->type = FD_CLOSED;) 117.95 Tj
-0 -180.374 Td
+0 -170.8805 Td
+(4465 f->type = FD_CLOSED;) 117.9499 Tj
+0 -180.3739 Td
(4466 release\(&file_table_lock\);) 144.161 Tj
-0 -189.867 Td
+0 -189.8672 Td
(4467 ) 21.8426 Tj
-0 -199.361 Td
-(4468 if\(ff.type == FD_PIPE\)) 126.687 Tj
-0 -208.854 Td
-(4469 pipeclose\(ff.pipe, ff.writable\);) 179.109 Tj
-0 -218.347 Td
+0 -199.3606 Td
+(4468 if\(ff.type == FD_PIPE\)) 126.6869 Tj
+0 -208.8539 Td
+(4469 pipeclose\(ff.pipe, ff.writable\);) 179.1091 Tj
+0 -218.3473 Td
(4470 else if\(ff.type == FD_INODE\)) 152.898 Tj
-0 -227.841 Td
+0 -227.8407 Td
(4471 iput\(ff.ip\);) 91.7388 Tj
0 -237.334 Td
(4472 else) 48.0537 Tj
-0 -246.827 Td
-(4473 panic\("fileclose"\);) 122.318 Tj
-0 -256.321 Td
+0 -246.8274 Td
+(4473 panic\("fileclose"\);) 122.3184 Tj
+0 -256.3207 Td
(4474 }) 26.2111 Tj
-0 -265.814 Td
+0 -265.8141 Td
(4475 ) 21.8426 Tj
-0 -275.307 Td
-(4476 // Get metadata about file f.) 148.529 Tj
-0 -284.801 Td
+0 -275.3075 Td
+(4476 // Get metadata about file f.) 148.5295 Tj
+0 -284.8008 Td
(4477 int) 34.9481 Tj
-0 -294.294 Td
-(4478 filestat\(struct file *f, struct stat *st\)) 200.952 Tj
-0 -303.788 Td
+0 -294.2942 Td
+(4478 filestat\(struct file *f, struct stat *st\)) 200.9517 Tj
+0 -303.7875 Td
(4479 {) 26.2111 Tj
-0 -313.281 Td
-(4480 if\(f->type == FD_INODE\){) 135.424 Tj
-0 -322.774 Td
+0 -313.2809 Td
+(4480 if\(f->type == FD_INODE\){) 135.4239 Tj
+0 -322.7743 Td
(4481 ilock\(f->ip\);) 96.1073 Tj
-0 -332.268 Td
-(4482 stati\(f->ip, st\);) 113.581 Tj
+0 -332.2676 Td
+(4482 stati\(f->ip, st\);) 113.5814 Tj
0 -341.761 Td
-(4483 iunlock\(f->ip\);) 104.844 Tj
-0 -351.254 Td
+(4483 iunlock\(f->ip\);) 104.8443 Tj
+0 -351.2543 Td
(4484 return 0;) 78.6333 Tj
-0 -360.748 Td
+0 -360.7477 Td
(4485 }) 34.9481 Tj
-0 -370.241 Td
+0 -370.2411 Td
(4486 return -1;) 74.2647 Tj
-0 -379.734 Td
+0 -379.7344 Td
(4487 }) 26.2111 Tj
-0 -389.228 Td
+0 -389.2278 Td
(4488 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(4489 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(4490 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(4491 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(4492 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(4493 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4494 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4495 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4496 ) 21.8426 Tj
0 -474.668 Td
(4497 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4498 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4499 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 44) 34.9481 Tj
Q
Q
@@ -15872,8 +15862,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -15888,16 +15877,16 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/file.c Page 3) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/file.c Page 3) 161.635 Tj
0 -28.4801 Td
-(4500 // Read from file f. Addr is kernel address.) 218.426 Tj
+(4500 // Read from file f. Addr is kernel address.) 218.4257 Tj
0 -37.9735 Td
(4501 int) 34.9481 Tj
0 -47.4668 Td
-(4502 fileread\(struct file *f, char *addr, int n\)) 209.689 Tj
+(4502 fileread\(struct file *f, char *addr, int n\)) 209.6887 Tj
0 -56.9602 Td
(4503 {) 26.2111 Tj
0 -66.4535 Td
@@ -15905,94 +15894,94 @@ q
0 -75.9469 Td
(4505 ) 21.8426 Tj
0 -85.4403 Td
-(4506 if\(f->readable == 0\)) 117.95 Tj
+(4506 if\(f->readable == 0\)) 117.9499 Tj
0 -94.9336 Td
(4507 return -1;) 83.0018 Tj
0 -104.427 Td
-(4508 if\(f->type == FD_PIPE\)) 126.687 Tj
-0 -113.92 Td
-(4509 return piperead\(f->pipe, addr, n\);) 187.846 Tj
-0 -123.414 Td
-(4510 if\(f->type == FD_INODE\){) 135.424 Tj
-0 -132.907 Td
+(4508 if\(f->type == FD_PIPE\)) 126.6869 Tj
+0 -113.9203 Td
+(4509 return piperead\(f->pipe, addr, n\);) 187.8461 Tj
+0 -123.4137 Td
+(4510 if\(f->type == FD_INODE\){) 135.4239 Tj
+0 -132.9071 Td
(4511 ilock\(f->ip\);) 96.1073 Tj
-0 -142.4 Td
-(4512 if\(\(r = readi\(f->ip, addr, f->off, n\)\) > 0\)) 227.163 Tj
-0 -151.894 Td
-(4513 f->off += r;) 100.476 Tj
-0 -161.387 Td
-(4514 iunlock\(f->ip\);) 104.844 Tj
-0 -170.88 Td
+0 -142.4004 Td
+(4512 if\(\(r = readi\(f->ip, addr, f->off, n\)\) > 0\)) 227.1628 Tj
+0 -151.8938 Td
+(4513 f->off += r;) 100.4758 Tj
+0 -161.3871 Td
+(4514 iunlock\(f->ip\);) 104.8443 Tj
+0 -170.8805 Td
(4515 return r;) 78.6333 Tj
-0 -180.374 Td
+0 -180.3739 Td
(4516 }) 34.9481 Tj
-0 -189.867 Td
-(4517 panic\("fileread"\);) 109.213 Tj
-0 -199.361 Td
+0 -189.8672 Td
+(4517 panic\("fileread"\);) 109.2129 Tj
+0 -199.3606 Td
(4518 }) 26.2111 Tj
-0 -208.854 Td
+0 -208.8539 Td
(4519 ) 21.8426 Tj
-0 -218.347 Td
-(4520 // Write to file f. Addr is kernel address.) 214.057 Tj
-0 -227.841 Td
+0 -218.3473 Td
+(4520 // Write to file f. Addr is kernel address.) 214.0572 Tj
+0 -227.8407 Td
(4521 int) 34.9481 Tj
0 -237.334 Td
-(4522 filewrite\(struct file *f, char *addr, int n\)) 214.057 Tj
-0 -246.827 Td
+(4522 filewrite\(struct file *f, char *addr, int n\)) 214.0572 Tj
+0 -246.8274 Td
(4523 {) 26.2111 Tj
-0 -256.321 Td
+0 -256.3207 Td
(4524 int r;) 56.7907 Tj
-0 -265.814 Td
+0 -265.8141 Td
(4525 ) 21.8426 Tj
-0 -275.307 Td
-(4526 if\(f->writable == 0\)) 117.95 Tj
-0 -284.801 Td
+0 -275.3075 Td
+(4526 if\(f->writable == 0\)) 117.9499 Tj
+0 -284.8008 Td
(4527 return -1;) 83.0018 Tj
-0 -294.294 Td
-(4528 if\(f->type == FD_PIPE\)) 126.687 Tj
-0 -303.788 Td
-(4529 return pipewrite\(f->pipe, addr, n\);) 192.215 Tj
-0 -313.281 Td
-(4530 if\(f->type == FD_INODE\){) 135.424 Tj
-0 -322.774 Td
+0 -294.2942 Td
+(4528 if\(f->type == FD_PIPE\)) 126.6869 Tj
+0 -303.7875 Td
+(4529 return pipewrite\(f->pipe, addr, n\);) 192.2146 Tj
+0 -313.2809 Td
+(4530 if\(f->type == FD_INODE\){) 135.4239 Tj
+0 -322.7743 Td
(4531 ilock\(f->ip\);) 96.1073 Tj
-0 -332.268 Td
-(4532 if\(\(r = writei\(f->ip, addr, f->off, n\)\) > 0\)) 231.531 Tj
+0 -332.2676 Td
+(4532 if\(\(r = writei\(f->ip, addr, f->off, n\)\) > 0\)) 231.5313 Tj
0 -341.761 Td
-(4533 f->off += r;) 100.476 Tj
-0 -351.254 Td
-(4534 iunlock\(f->ip\);) 104.844 Tj
-0 -360.748 Td
+(4533 f->off += r;) 100.4758 Tj
+0 -351.2543 Td
+(4534 iunlock\(f->ip\);) 104.8443 Tj
+0 -360.7477 Td
(4535 return r;) 78.6333 Tj
-0 -370.241 Td
+0 -370.2411 Td
(4536 }) 34.9481 Tj
-0 -379.734 Td
-(4537 panic\("filewrite"\);) 113.581 Tj
-0 -389.228 Td
+0 -379.7344 Td
+(4537 panic\("filewrite"\);) 113.5814 Tj
+0 -389.2278 Td
(4538 }) 26.2111 Tj
-0 -398.721 Td
+0 -398.7211 Td
(4539 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(4540 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(4541 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(4542 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(4543 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4544 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4545 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4546 ) 21.8426 Tj
0 -474.668 Td
(4547 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4548 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4549 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 45) 34.9481 Tj
Q
Q
@@ -16007,16 +15996,16 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sysfile.c Page 1) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sysfile.c Page 1) 174.7406 Tj
0 -28.4801 Td
-(4550 #include "types.h") 100.476 Tj
+(4550 #include "types.h") 100.4758 Tj
0 -37.9735 Td
(4551 #include "defs.h") 96.1073 Tj
0 -47.4668 Td
-(4552 #include "param.h") 100.476 Tj
+(4552 #include "param.h") 100.4758 Tj
0 -56.9602 Td
(4553 #include "stat.h") 96.1073 Tj
0 -66.4535 Td
@@ -16026,94 +16015,94 @@ q
0 -85.4403 Td
(4556 #include "fs.h") 87.3703 Tj
0 -94.9336 Td
-(4557 #include "fsvar.h") 100.476 Tj
+(4557 #include "fsvar.h") 100.4758 Tj
0 -104.427 Td
(4558 #include "file.h") 96.1073 Tj
-0 -113.92 Td
-(4559 #include "fcntl.h") 100.476 Tj
-0 -123.414 Td
+0 -113.9203 Td
+(4559 #include "fcntl.h") 100.4758 Tj
+0 -123.4137 Td
(4560 ) 21.8426 Tj
-0 -132.907 Td
+0 -132.9071 Td
(4561 // Fetch the nth word-sized system call argument as a file\
- descriptor) 323.27 Tj
-0 -142.4 Td
+ descriptor) 323.2701 Tj
+0 -142.4004 Td
(4562 // and return both the descriptor and the corresponding st\
-ruct file.) 318.902 Tj
-0 -151.894 Td
+ruct file.) 318.9016 Tj
+0 -151.8938 Td
(4563 static int) 65.5277 Tj
-0 -161.387 Td
-(4564 argfd\(int n, int *pfd, struct file **pf\)) 196.583 Tj
-0 -170.88 Td
+0 -161.3871 Td
+(4564 argfd\(int n, int *pfd, struct file **pf\)) 196.5831 Tj
+0 -170.8805 Td
(4565 {) 26.2111 Tj
-0 -180.374 Td
+0 -180.3739 Td
(4566 int fd;) 61.1592 Tj
-0 -189.867 Td
+0 -189.8672 Td
(4567 struct file *f;) 96.1073 Tj
-0 -199.361 Td
+0 -199.3606 Td
(4568 ) 21.8426 Tj
-0 -208.854 Td
-(4569 if\(argint\(n, &fd\) < 0\)) 126.687 Tj
-0 -218.347 Td
+0 -208.8539 Td
+(4569 if\(argint\(n, &fd\) < 0\)) 126.6869 Tj
+0 -218.3473 Td
(4570 return -1;) 83.0018 Tj
-0 -227.841 Td
-(4571 if\(fd < 0 || fd >= NOFILE || \(f=cp->ofile[fd]\) == 0\)) 257.742 Tj
+0 -227.8407 Td
+(4571 if\(fd < 0 || fd >= NOFILE || \(f=cp->ofile[fd]\) == 0\)) 257.7424 Tj
0 -237.334 Td
(4572 return -1;) 83.0018 Tj
-0 -246.827 Td
+0 -246.8274 Td
(4573 if\(pfd\)) 61.1592 Tj
-0 -256.321 Td
+0 -256.3207 Td
(4574 *pfd = fd;) 83.0018 Tj
-0 -265.814 Td
+0 -265.8141 Td
(4575 if\(pf\)) 56.7907 Tj
-0 -275.307 Td
+0 -275.3075 Td
(4576 *pf = f;) 74.2647 Tj
-0 -284.801 Td
+0 -284.8008 Td
(4577 return 0;) 69.8962 Tj
-0 -294.294 Td
+0 -294.2942 Td
(4578 }) 26.2111 Tj
-0 -303.788 Td
+0 -303.7875 Td
(4579 ) 21.8426 Tj
-0 -313.281 Td
-(4580 // Allocate a file descriptor for the given file.) 235.9 Tj
-0 -322.774 Td
-(4581 // Takes over file reference from caller on success.) 249.005 Tj
-0 -332.268 Td
+0 -313.2809 Td
+(4580 // Allocate a file descriptor for the given file.) 235.8998 Tj
+0 -322.7743 Td
+(4581 // Takes over file reference from caller on success.) 249.0053 Tj
+0 -332.2676 Td
(4582 static int) 65.5277 Tj
0 -341.761 Td
-(4583 fdalloc\(struct file *f\)) 122.318 Tj
-0 -351.254 Td
+(4583 fdalloc\(struct file *f\)) 122.3184 Tj
+0 -351.2543 Td
(4584 {) 26.2111 Tj
-0 -360.748 Td
+0 -360.7477 Td
(4585 int fd;) 61.1592 Tj
-0 -370.241 Td
+0 -370.2411 Td
(4586 ) 21.8426 Tj
-0 -379.734 Td
-(4587 for\(fd = 0; fd < NOFILE; fd++\){) 166.004 Tj
-0 -389.228 Td
-(4588 if\(cp->ofile[fd] == 0\){) 139.792 Tj
-0 -398.721 Td
-(4589 cp->ofile[fd] = f;) 126.687 Tj
-0 -408.214 Td
+0 -379.7344 Td
+(4587 for\(fd = 0; fd < NOFILE; fd++\){) 166.0035 Tj
+0 -389.2278 Td
+(4588 if\(cp->ofile[fd] == 0\){) 139.7925 Tj
+0 -398.7211 Td
+(4589 cp->ofile[fd] = f;) 126.6869 Tj
+0 -408.2145 Td
(4590 return fd;) 91.7388 Tj
-0 -417.708 Td
+0 -417.7079 Td
(4591 }) 43.6851 Tj
-0 -427.201 Td
+0 -427.2012 Td
(4592 }) 34.9481 Tj
-0 -436.695 Td
+0 -436.6946 Td
(4593 return -1;) 74.2647 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4594 }) 26.2111 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4595 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4596 ) 21.8426 Tj
0 -474.668 Td
(4597 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4598 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4599 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 45) 34.9481 Tj
Q
Q
@@ -16142,8 +16131,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -16158,10 +16146,10 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sysfile.c Page 2) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sysfile.c Page 2) 174.7406 Tj
0 -28.4801 Td
(4600 int) 34.9481 Tj
0 -37.9735 Td
@@ -16173,98 +16161,98 @@ q
0 -66.4535 Td
(4604 int n;) 56.7907 Tj
0 -75.9469 Td
-(4605 char *cp;) 69.8962 Tj
+(4605 char *p;) 65.5277 Tj
0 -85.4403 Td
(4606 ) 21.8426 Tj
0 -94.9336 Td
(4607 if\(argfd\(0, 0, &f\) < 0 || argint\(2, &n\) < 0 || argp\
-tr\(1, &cp, n\) < 0\)) 332.007 Tj
+tr\(1, &p, n\) < 0\)) 327.6386 Tj
0 -104.427 Td
(4608 return -1;) 83.0018 Tj
-0 -113.92 Td
-(4609 return fileread\(f, cp, n\);) 144.161 Tj
-0 -123.414 Td
+0 -113.9203 Td
+(4609 return fileread\(f, p, n\);) 139.7925 Tj
+0 -123.4137 Td
(4610 }) 26.2111 Tj
-0 -132.907 Td
+0 -132.9071 Td
(4611 ) 21.8426 Tj
-0 -142.4 Td
+0 -142.4004 Td
(4612 int) 34.9481 Tj
-0 -151.894 Td
+0 -151.8938 Td
(4613 sys_write\(void\)) 87.3703 Tj
-0 -161.387 Td
+0 -161.3871 Td
(4614 {) 26.2111 Tj
-0 -170.88 Td
+0 -170.8805 Td
(4615 struct file *f;) 96.1073 Tj
-0 -180.374 Td
+0 -180.3739 Td
(4616 int n;) 56.7907 Tj
-0 -189.867 Td
-(4617 char *cp;) 69.8962 Tj
-0 -199.361 Td
+0 -189.8672 Td
+(4617 char *p;) 65.5277 Tj
+0 -199.3606 Td
(4618 ) 21.8426 Tj
-0 -208.854 Td
+0 -208.8539 Td
(4619 if\(argfd\(0, 0, &f\) < 0 || argint\(2, &n\) < 0 || argp\
-tr\(1, &cp, n\) < 0\)) 332.007 Tj
-0 -218.347 Td
+tr\(1, &p, n\) < 0\)) 327.6386 Tj
+0 -218.3473 Td
(4620 return -1;) 83.0018 Tj
-0 -227.841 Td
-(4621 return filewrite\(f, cp, n\);) 148.529 Tj
+0 -227.8407 Td
+(4621 return filewrite\(f, p, n\);) 144.161 Tj
0 -237.334 Td
(4622 }) 26.2111 Tj
-0 -246.827 Td
+0 -246.8274 Td
(4623 ) 21.8426 Tj
-0 -256.321 Td
+0 -256.3207 Td
(4624 int) 34.9481 Tj
-0 -265.814 Td
+0 -265.8141 Td
(4625 sys_dup\(void\)) 78.6333 Tj
-0 -275.307 Td
+0 -275.3075 Td
(4626 {) 26.2111 Tj
-0 -284.801 Td
+0 -284.8008 Td
(4627 struct file *f;) 96.1073 Tj
-0 -294.294 Td
+0 -294.2942 Td
(4628 int fd;) 61.1592 Tj
-0 -303.788 Td
+0 -303.7875 Td
(4629 ) 21.8426 Tj
-0 -313.281 Td
-(4630 if\(argfd\(0, 0, &f\) < 0\)) 131.055 Tj
-0 -322.774 Td
+0 -313.2809 Td
+(4630 if\(argfd\(0, 0, &f\) < 0\)) 131.0554 Tj
+0 -322.7743 Td
(4631 return -1;) 83.0018 Tj
-0 -332.268 Td
-(4632 if\(\(fd=fdalloc\(f\)\) < 0\)) 131.055 Tj
+0 -332.2676 Td
+(4632 if\(\(fd=fdalloc\(f\)\) < 0\)) 131.0554 Tj
0 -341.761 Td
(4633 return -1;) 83.0018 Tj
-0 -351.254 Td
+0 -351.2543 Td
(4634 filedup\(f\);) 78.6333 Tj
-0 -360.748 Td
+0 -360.7477 Td
(4635 return fd;) 74.2647 Tj
-0 -370.241 Td
+0 -370.2411 Td
(4636 }) 26.2111 Tj
-0 -379.734 Td
+0 -379.7344 Td
(4637 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(4638 int) 34.9481 Tj
-0 -398.721 Td
+0 -398.7211 Td
(4639 sys_close\(void\)) 87.3703 Tj
-0 -408.214 Td
+0 -408.2145 Td
(4640 {) 26.2111 Tj
-0 -417.708 Td
+0 -417.7079 Td
(4641 int fd;) 61.1592 Tj
-0 -427.201 Td
+0 -427.2012 Td
(4642 struct file *f;) 96.1073 Tj
-0 -436.695 Td
+0 -436.6946 Td
(4643 ) 21.8426 Tj
-0 -446.188 Td
-(4644 if\(argfd\(0, &fd, &f\) < 0\)) 139.792 Tj
-0 -455.681 Td
+0 -446.1879 Td
+(4644 if\(argfd\(0, &fd, &f\) < 0\)) 139.7925 Tj
+0 -455.6813 Td
(4645 return -1;) 83.0018 Tj
-0 -465.175 Td
-(4646 cp->ofile[fd] = 0;) 109.213 Tj
+0 -465.1747 Td
+(4646 cp->ofile[fd] = 0;) 109.2129 Tj
0 -474.668 Td
(4647 fileclose\(f\);) 87.3703 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4648 return 0;) 69.8962 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4649 }) 26.2111 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 46) 34.9481 Tj
Q
Q
@@ -16279,10 +16267,10 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sysfile.c Page 3) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sysfile.c Page 3) 174.7406 Tj
0 -28.4801 Td
(4650 int) 34.9481 Tj
0 -37.9735 Td
@@ -16292,7 +16280,7 @@ q
0 -56.9602 Td
(4653 struct file *f;) 96.1073 Tj
0 -66.4535 Td
-(4654 struct stat *st;) 100.476 Tj
+(4654 struct stat *st;) 100.4758 Tj
0 -75.9469 Td
(4655 ) 21.8426 Tj
0 -85.4403 Td
@@ -16301,91 +16289,91 @@ zeof\(*st\)\) < 0\)) 314.533 Tj
0 -94.9336 Td
(4657 return -1;) 83.0018 Tj
0 -104.427 Td
-(4658 return filestat\(f, st\);) 131.055 Tj
-0 -113.92 Td
+(4658 return filestat\(f, st\);) 131.0554 Tj
+0 -113.9203 Td
(4659 }) 26.2111 Tj
-0 -123.414 Td
+0 -123.4137 Td
(4660 ) 21.8426 Tj
-0 -132.907 Td
-(4661 // Create the path new as a link to the same inode as old.) 275.216 Tj
-0 -142.4 Td
+0 -132.9071 Td
+(4661 // Create the path new as a link to the same inode as old.) 275.2164 Tj
+0 -142.4004 Td
(4662 int) 34.9481 Tj
-0 -151.894 Td
+0 -151.8938 Td
(4663 sys_link\(void\)) 83.0018 Tj
-0 -161.387 Td
+0 -161.3871 Td
(4664 {) 26.2111 Tj
-0 -170.88 Td
+0 -170.8805 Td
(4665 char name[DIRSIZ], *new, *old;) 161.635 Tj
-0 -180.374 Td
-(4666 struct inode *dp, *ip;) 126.687 Tj
-0 -189.867 Td
+0 -180.3739 Td
+(4666 struct inode *dp, *ip;) 126.6869 Tj
+0 -189.8672 Td
(4667 ) 21.8426 Tj
-0 -199.361 Td
-(4668 if\(argstr\(0, &old\) < 0 || argstr\(1, &new\) < 0\)) 231.531 Tj
-0 -208.854 Td
+0 -199.3606 Td
+(4668 if\(argstr\(0, &old\) < 0 || argstr\(1, &new\) < 0\)) 231.5313 Tj
+0 -208.8539 Td
(4669 return -1;) 83.0018 Tj
-0 -218.347 Td
+0 -218.3473 Td
(4670 if\(\(ip = namei\(old\)\) == 0\)) 144.161 Tj
-0 -227.841 Td
+0 -227.8407 Td
(4671 return -1;) 83.0018 Tj
0 -237.334 Td
(4672 ilock\(ip\);) 74.2647 Tj
-0 -246.827 Td
-(4673 if\(ip->type == T_DIR\){) 126.687 Tj
-0 -256.321 Td
-(4674 iunlockput\(ip\);) 104.844 Tj
-0 -265.814 Td
+0 -246.8274 Td
+(4673 if\(ip->type == T_DIR\){) 126.6869 Tj
+0 -256.3207 Td
+(4674 iunlockput\(ip\);) 104.8443 Tj
+0 -265.8141 Td
(4675 return -1;) 83.0018 Tj
-0 -275.307 Td
+0 -275.3075 Td
(4676 }) 34.9481 Tj
-0 -284.801 Td
+0 -284.8008 Td
(4677 ip->nlink++;) 83.0018 Tj
-0 -294.294 Td
+0 -294.2942 Td
(4678 iupdate\(ip\);) 83.0018 Tj
-0 -303.788 Td
+0 -303.7875 Td
(4679 iunlock\(ip\);) 83.0018 Tj
-0 -313.281 Td
+0 -313.2809 Td
(4680 ) 21.8426 Tj
-0 -322.774 Td
-(4681 if\(\(dp = nameiparent\(new, name\)\) == 0\)) 196.583 Tj
-0 -332.268 Td
+0 -322.7743 Td
+(4681 if\(\(dp = nameiparent\(new, name\)\) == 0\)) 196.5831 Tj
+0 -332.2676 Td
(4682 goto bad;) 83.0018 Tj
0 -341.761 Td
(4683 ilock\(dp\);) 74.2647 Tj
-0 -351.254 Td
+0 -351.2543 Td
(4684 if\(dp->dev != ip->dev || dirlink\(dp, name, ip->inum\) \
-< 0\)) 279.585 Tj
-0 -360.748 Td
+< 0\)) 279.5849 Tj
+0 -360.7477 Td
(4685 goto bad;) 78.6333 Tj
-0 -370.241 Td
+0 -370.2411 Td
(4686 iunlockput\(dp\);) 96.1073 Tj
-0 -379.734 Td
+0 -379.7344 Td
(4687 iput\(ip\);) 69.8962 Tj
-0 -389.228 Td
+0 -389.2278 Td
(4688 return 0;) 69.8962 Tj
-0 -398.721 Td
+0 -398.7211 Td
(4689 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(4690 bad:) 39.3166 Tj
-0 -417.708 Td
+0 -417.7079 Td
(4691 if\(dp\)) 56.7907 Tj
-0 -427.201 Td
-(4692 iunlockput\(dp\);) 104.844 Tj
-0 -436.695 Td
+0 -427.2012 Td
+(4692 iunlockput\(dp\);) 104.8443 Tj
+0 -436.6946 Td
(4693 ilock\(ip\);) 74.2647 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4694 ip->nlink--;) 83.0018 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4695 iupdate\(ip\);) 83.0018 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4696 iunlockput\(ip\);) 96.1073 Tj
0 -474.668 Td
(4697 return -1;) 74.2647 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4698 }) 26.2111 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4699 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 46) 34.9481 Tj
Q
Q
@@ -16414,8 +16402,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -16430,12 +16417,12 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sysfile.c Page 4) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sysfile.c Page 4) 174.7406 Tj
0 -28.4801 Td
-(4700 // Is the directory dp empty except for "." and ".." ?) 257.742 Tj
+(4700 // Is the directory dp empty except for "." and ".." ?) 257.7424 Tj
0 -37.9735 Td
(4701 static int) 65.5277 Tj
0 -47.4668 Td
@@ -16445,98 +16432,98 @@ q
0 -66.4535 Td
(4704 int off;) 65.5277 Tj
0 -75.9469 Td
-(4705 struct dirent de;) 104.844 Tj
+(4705 struct dirent de;) 104.8443 Tj
0 -85.4403 Td
(4706 ) 21.8426 Tj
0 -94.9336 Td
(4707 for\(off=2*sizeof\(de\); off<dp->size; off+=sizeof\(de\)\
-\){) 262.111 Tj
+\){) 262.1109 Tj
0 -104.427 Td
(4708 if\(readi\(dp, \(char*\)&de, off, sizeof\(de\)\) != si\
-zeof\(de\)\)) 283.953 Tj
-0 -113.92 Td
-(4709 panic\("isdirempty: readi"\);) 166.004 Tj
-0 -123.414 Td
-(4710 if\(de.inum != 0\)) 109.213 Tj
-0 -132.907 Td
+zeof\(de\)\)) 283.9534 Tj
+0 -113.9203 Td
+(4709 panic\("isdirempty: readi"\);) 166.0035 Tj
+0 -123.4137 Td
+(4710 if\(de.inum != 0\)) 109.2129 Tj
+0 -132.9071 Td
(4711 return 0;) 87.3703 Tj
-0 -142.4 Td
+0 -142.4004 Td
(4712 }) 34.9481 Tj
-0 -151.894 Td
+0 -151.8938 Td
(4713 return 1;) 69.8962 Tj
-0 -161.387 Td
+0 -161.3871 Td
(4714 }) 26.2111 Tj
-0 -170.88 Td
+0 -170.8805 Td
(4715 ) 21.8426 Tj
-0 -180.374 Td
+0 -180.3739 Td
(4716 ) 21.8426 Tj
-0 -189.867 Td
+0 -189.8672 Td
(4717 ) 21.8426 Tj
-0 -199.361 Td
+0 -199.3606 Td
(4718 ) 21.8426 Tj
-0 -208.854 Td
+0 -208.8539 Td
(4719 ) 21.8426 Tj
-0 -218.347 Td
+0 -218.3473 Td
(4720 ) 21.8426 Tj
-0 -227.841 Td
+0 -227.8407 Td
(4721 ) 21.8426 Tj
0 -237.334 Td
(4722 ) 21.8426 Tj
-0 -246.827 Td
+0 -246.8274 Td
(4723 ) 21.8426 Tj
-0 -256.321 Td
+0 -256.3207 Td
(4724 ) 21.8426 Tj
-0 -265.814 Td
+0 -265.8141 Td
(4725 ) 21.8426 Tj
-0 -275.307 Td
+0 -275.3075 Td
(4726 ) 21.8426 Tj
-0 -284.801 Td
+0 -284.8008 Td
(4727 ) 21.8426 Tj
-0 -294.294 Td
+0 -294.2942 Td
(4728 ) 21.8426 Tj
-0 -303.788 Td
+0 -303.7875 Td
(4729 ) 21.8426 Tj
-0 -313.281 Td
+0 -313.2809 Td
(4730 ) 21.8426 Tj
-0 -322.774 Td
+0 -322.7743 Td
(4731 ) 21.8426 Tj
-0 -332.268 Td
+0 -332.2676 Td
(4732 ) 21.8426 Tj
0 -341.761 Td
(4733 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(4734 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(4735 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(4736 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(4737 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(4738 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(4739 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(4740 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(4741 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(4742 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(4743 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4744 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4745 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4746 ) 21.8426 Tj
0 -474.668 Td
(4747 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4748 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4749 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 47) 34.9481 Tj
Q
Q
@@ -16551,10 +16538,10 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sysfile.c Page 5) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sysfile.c Page 5) 174.7406 Tj
0 -28.4801 Td
(4750 int) 34.9481 Tj
0 -37.9735 Td
@@ -16562,102 +16549,102 @@ q
0 -47.4668 Td
(4752 {) 26.2111 Tj
0 -56.9602 Td
-(4753 struct inode *ip, *dp;) 126.687 Tj
+(4753 struct inode *ip, *dp;) 126.6869 Tj
0 -66.4535 Td
-(4754 struct dirent de;) 104.844 Tj
+(4754 struct dirent de;) 104.8443 Tj
0 -75.9469 Td
-(4755 char name[DIRSIZ], *path;) 139.792 Tj
+(4755 char name[DIRSIZ], *path;) 139.7925 Tj
0 -85.4403 Td
(4756 uint off;) 69.8962 Tj
0 -94.9336 Td
(4757 ) 21.8426 Tj
0 -104.427 Td
-(4758 if\(argstr\(0, &path\) < 0\)) 135.424 Tj
-0 -113.92 Td
+(4758 if\(argstr\(0, &path\) < 0\)) 135.4239 Tj
+0 -113.9203 Td
(4759 return -1;) 83.0018 Tj
-0 -123.414 Td
-(4760 if\(\(dp = nameiparent\(path, name\)\) == 0\)) 200.952 Tj
-0 -132.907 Td
+0 -123.4137 Td
+(4760 if\(\(dp = nameiparent\(path, name\)\) == 0\)) 200.9517 Tj
+0 -132.9071 Td
(4761 return -1;) 83.0018 Tj
-0 -142.4 Td
+0 -142.4004 Td
(4762 ilock\(dp\);) 74.2647 Tj
-0 -151.894 Td
+0 -151.8938 Td
(4763 ) 21.8426 Tj
-0 -161.387 Td
-(4764 // Cannot unlink "." or "..".) 157.267 Tj
-0 -170.88 Td
+0 -161.3871 Td
+(4764 // Cannot unlink "." or "..".) 157.2665 Tj
+0 -170.8805 Td
(4765 if\(namecmp\(name, "."\) == 0 || namecmp\(name, ".."\) =\
-= 0\){) 275.216 Tj
-0 -180.374 Td
-(4766 iunlockput\(dp\);) 104.844 Tj
-0 -189.867 Td
+= 0\){) 275.2164 Tj
+0 -180.3739 Td
+(4766 iunlockput\(dp\);) 104.8443 Tj
+0 -189.8672 Td
(4767 return -1;) 83.0018 Tj
-0 -199.361 Td
+0 -199.3606 Td
(4768 }) 34.9481 Tj
-0 -208.854 Td
+0 -208.8539 Td
(4769 ) 21.8426 Tj
-0 -218.347 Td
-(4770 if\(\(ip = dirlookup\(dp, name, &off\)\) == 0\){) 214.057 Tj
-0 -227.841 Td
-(4771 iunlockput\(dp\);) 104.844 Tj
+0 -218.3473 Td
+(4770 if\(\(ip = dirlookup\(dp, name, &off\)\) == 0\){) 214.0572 Tj
+0 -227.8407 Td
+(4771 iunlockput\(dp\);) 104.8443 Tj
0 -237.334 Td
(4772 return -1;) 83.0018 Tj
-0 -246.827 Td
+0 -246.8274 Td
(4773 }) 34.9481 Tj
-0 -256.321 Td
+0 -256.3207 Td
(4774 ilock\(ip\);) 74.2647 Tj
-0 -265.814 Td
+0 -265.8141 Td
(4775 ) 21.8426 Tj
-0 -275.307 Td
-(4776 if\(ip->nlink < 1\)) 104.844 Tj
-0 -284.801 Td
-(4777 panic\("unlink: nlink < 1"\);) 157.267 Tj
-0 -294.294 Td
-(4778 if\(ip->type == T_DIR && !isdirempty\(ip\)\){) 209.689 Tj
-0 -303.788 Td
-(4779 iunlockput\(ip\);) 104.844 Tj
-0 -313.281 Td
-(4780 iunlockput\(dp\);) 104.844 Tj
-0 -322.774 Td
+0 -275.3075 Td
+(4776 if\(ip->nlink < 1\)) 104.8443 Tj
+0 -284.8008 Td
+(4777 panic\("unlink: nlink < 1"\);) 157.2665 Tj
+0 -294.2942 Td
+(4778 if\(ip->type == T_DIR && !isdirempty\(ip\)\){) 209.6887 Tj
+0 -303.7875 Td
+(4779 iunlockput\(ip\);) 104.8443 Tj
+0 -313.2809 Td
+(4780 iunlockput\(dp\);) 104.8443 Tj
+0 -322.7743 Td
(4781 return -1;) 83.0018 Tj
-0 -332.268 Td
+0 -332.2676 Td
(4782 }) 34.9481 Tj
0 -341.761 Td
(4783 ) 21.8426 Tj
-0 -351.254 Td
-(4784 memset\(&de, 0, sizeof\(de\)\);) 148.529 Tj
-0 -360.748 Td
+0 -351.2543 Td
+(4784 memset\(&de, 0, sizeof\(de\)\);) 148.5295 Tj
+0 -360.7477 Td
(4785 if\(writei\(dp, \(char*\)&de, off, sizeof\(de\)\) != siz\
-eof\(de\)\)) 279.585 Tj
-0 -370.241 Td
+eof\(de\)\)) 279.5849 Tj
+0 -370.2411 Td
(4786 panic\("unlink: writei"\);) 144.161 Tj
-0 -379.734 Td
+0 -379.7344 Td
(4787 iunlockput\(dp\);) 96.1073 Tj
-0 -389.228 Td
+0 -389.2278 Td
(4788 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(4789 ip->nlink--;) 83.0018 Tj
-0 -408.214 Td
+0 -408.2145 Td
(4790 iupdate\(ip\);) 83.0018 Tj
-0 -417.708 Td
+0 -417.7079 Td
(4791 iunlockput\(ip\);) 96.1073 Tj
-0 -427.201 Td
+0 -427.2012 Td
(4792 return 0;) 69.8962 Tj
-0 -436.695 Td
+0 -436.6946 Td
(4793 }) 26.2111 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4794 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4795 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4796 ) 21.8426 Tj
0 -474.668 Td
(4797 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4798 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4799 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 47) 34.9481 Tj
Q
Q
@@ -16686,8 +16673,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -16702,115 +16688,115 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sysfile.c Page 6) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sysfile.c Page 6) 174.7406 Tj
0 -28.4801 Td
-(4800 static struct inode*) 109.213 Tj
+(4800 static struct inode*) 109.2129 Tj
0 -37.9735 Td
(4801 create\(char *path, int canexist, short type, short major,\
- short minor\)) 327.639 Tj
+ short minor\)) 327.6386 Tj
0 -47.4668 Td
(4802 {) 26.2111 Tj
0 -56.9602 Td
(4803 uint off;) 69.8962 Tj
0 -66.4535 Td
-(4804 struct inode *ip, *dp;) 126.687 Tj
+(4804 struct inode *ip, *dp;) 126.6869 Tj
0 -75.9469 Td
-(4805 char name[DIRSIZ];) 109.213 Tj
+(4805 char name[DIRSIZ];) 109.2129 Tj
0 -85.4403 Td
(4806 ) 21.8426 Tj
0 -94.9336 Td
-(4807 if\(\(dp = nameiparent\(path, name\)\) == 0\)) 200.952 Tj
+(4807 if\(\(dp = nameiparent\(path, name\)\) == 0\)) 200.9517 Tj
0 -104.427 Td
(4808 return 0;) 78.6333 Tj
-0 -113.92 Td
+0 -113.9203 Td
(4809 ilock\(dp\);) 74.2647 Tj
-0 -123.414 Td
+0 -123.4137 Td
(4810 ) 21.8426 Tj
-0 -132.907 Td
+0 -132.9071 Td
(4811 if\(canexist && \(ip = dirlookup\(dp, name, &off\)\) != \
-0\){) 266.479 Tj
-0 -142.4 Td
-(4812 iunlockput\(dp\);) 104.844 Tj
-0 -151.894 Td
+0\){) 266.4794 Tj
+0 -142.4004 Td
+(4812 iunlockput\(dp\);) 104.8443 Tj
+0 -151.8938 Td
(4813 ilock\(ip\);) 83.0018 Tj
-0 -161.387 Td
+0 -161.3871 Td
(4814 if\(ip->type != type || ip->major != major || ip->mino\
-r != minor\){) 323.27 Tj
-0 -170.88 Td
-(4815 iunlockput\(ip\);) 113.581 Tj
-0 -180.374 Td
+r != minor\){) 323.2701 Tj
+0 -170.8805 Td
+(4815 iunlockput\(ip\);) 113.5814 Tj
+0 -180.3739 Td
(4816 return 0;) 87.3703 Tj
-0 -189.867 Td
+0 -189.8672 Td
(4817 }) 43.6851 Tj
-0 -199.361 Td
+0 -199.3606 Td
(4818 return ip;) 83.0018 Tj
-0 -208.854 Td
+0 -208.8539 Td
(4819 }) 34.9481 Tj
-0 -218.347 Td
+0 -218.3473 Td
(4820 ) 21.8426 Tj
-0 -227.841 Td
-(4821 if\(\(ip = ialloc\(dp->dev, type\)\) == 0\){) 196.583 Tj
+0 -227.8407 Td
+(4821 if\(\(ip = ialloc\(dp->dev, type\)\) == 0\){) 196.5831 Tj
0 -237.334 Td
-(4822 iunlockput\(dp\);) 104.844 Tj
-0 -246.827 Td
+(4822 iunlockput\(dp\);) 104.8443 Tj
+0 -246.8274 Td
(4823 return 0;) 78.6333 Tj
-0 -256.321 Td
+0 -256.3207 Td
(4824 }) 34.9481 Tj
-0 -265.814 Td
+0 -265.8141 Td
(4825 ilock\(ip\);) 74.2647 Tj
-0 -275.307 Td
-(4826 ip->major = major;) 109.213 Tj
-0 -284.801 Td
-(4827 ip->minor = minor;) 109.213 Tj
-0 -294.294 Td
+0 -275.3075 Td
+(4826 ip->major = major;) 109.2129 Tj
+0 -284.8008 Td
+(4827 ip->minor = minor;) 109.2129 Tj
+0 -294.2942 Td
(4828 ip->nlink = 1;) 91.7388 Tj
-0 -303.788 Td
+0 -303.7875 Td
(4829 iupdate\(ip\);) 83.0018 Tj
-0 -313.281 Td
+0 -313.2809 Td
(4830 ) 21.8426 Tj
-0 -322.774 Td
-(4831 if\(dirlink\(dp, name, ip->inum\) < 0\){) 187.846 Tj
-0 -332.268 Td
-(4832 ip->nlink = 0;) 100.476 Tj
+0 -322.7743 Td
+(4831 if\(dirlink\(dp, name, ip->inum\) < 0\){) 187.8461 Tj
+0 -332.2676 Td
+(4832 ip->nlink = 0;) 100.4758 Tj
0 -341.761 Td
-(4833 iunlockput\(ip\);) 104.844 Tj
-0 -351.254 Td
-(4834 iunlockput\(dp\);) 104.844 Tj
-0 -360.748 Td
+(4833 iunlockput\(ip\);) 104.8443 Tj
+0 -351.2543 Td
+(4834 iunlockput\(dp\);) 104.8443 Tj
+0 -360.7477 Td
(4835 return 0;) 78.6333 Tj
-0 -370.241 Td
+0 -370.2411 Td
(4836 }) 34.9481 Tj
-0 -379.734 Td
+0 -379.7344 Td
(4837 ) 21.8426 Tj
-0 -389.228 Td
-(4838 if\(type == T_DIR\){ // Create . and .. entries.) 235.9 Tj
-0 -398.721 Td
-(4839 dp->nlink++; // for "..") 148.529 Tj
-0 -408.214 Td
+0 -389.2278 Td
+(4838 if\(type == T_DIR\){ // Create . and .. entries.) 235.8998 Tj
+0 -398.7211 Td
+(4839 dp->nlink++; // for "..") 148.5295 Tj
+0 -408.2145 Td
(4840 iupdate\(dp\);) 91.7388 Tj
-0 -417.708 Td
-(4841 // No ip->nlink++ for ".": avoid cyclic ref count.) 257.742 Tj
-0 -427.201 Td
+0 -417.7079 Td
+(4841 // No ip->nlink++ for ".": avoid cyclic ref count.) 257.7424 Tj
+0 -427.2012 Td
(4842 if\(dirlink\(ip, ".", ip->inum\) < 0 || dirlink\(ip, "\
-..", dp->inum\) < 0\)) 340.744 Tj
-0 -436.695 Td
-(4843 panic\("create dots"\);) 139.792 Tj
-0 -446.188 Td
+..", dp->inum\) < 0\)) 340.7441 Tj
+0 -436.6946 Td
+(4843 panic\("create dots"\);) 139.7925 Tj
+0 -446.1879 Td
(4844 }) 34.9481 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4845 iunlockput\(dp\);) 96.1073 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4846 return ip;) 74.2647 Tj
0 -474.668 Td
(4847 }) 26.2111 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4848 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4849 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 48) 34.9481 Tj
Q
Q
@@ -16825,10 +16811,10 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sysfile.c Page 7) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sysfile.c Page 7) 174.7406 Tj
0 -28.4801 Td
(4850 int) 34.9481 Tj
0 -37.9735 Td
@@ -16842,97 +16828,97 @@ q
0 -75.9469 Td
(4855 struct file *f;) 96.1073 Tj
0 -85.4403 Td
-(4856 struct inode *ip;) 104.844 Tj
+(4856 struct inode *ip;) 104.8443 Tj
0 -94.9336 Td
(4857 ) 21.8426 Tj
0 -104.427 Td
-(4858 if\(argstr\(0, &path\) < 0 || argint\(1, &omode\) < 0\)) 244.637 Tj
-0 -113.92 Td
+(4858 if\(argstr\(0, &path\) < 0 || argint\(1, &omode\) < 0\)) 244.6368 Tj
+0 -113.9203 Td
(4859 return -1;) 83.0018 Tj
-0 -123.414 Td
+0 -123.4137 Td
(4860 ) 21.8426 Tj
-0 -132.907 Td
-(4861 if\(omode & O_CREATE\){) 122.318 Tj
-0 -142.4 Td
-(4862 if\(\(ip = create\(path, 1, T_FILE, 0, 0\)\) == 0\)) 235.9 Tj
-0 -151.894 Td
+0 -132.9071 Td
+(4861 if\(omode & O_CREATE\){) 122.3184 Tj
+0 -142.4004 Td
+(4862 if\(\(ip = create\(path, 1, T_FILE, 0, 0\)\) == 0\)) 235.8998 Tj
+0 -151.8938 Td
(4863 return -1;) 91.7388 Tj
-0 -161.387 Td
+0 -161.3871 Td
(4864 } else {) 65.5277 Tj
-0 -170.88 Td
-(4865 if\(\(ip = namei\(path\)\) == 0\)) 157.267 Tj
-0 -180.374 Td
+0 -170.8805 Td
+(4865 if\(\(ip = namei\(path\)\) == 0\)) 157.2665 Tj
+0 -180.3739 Td
(4866 return -1;) 91.7388 Tj
-0 -189.867 Td
+0 -189.8672 Td
(4867 ilock\(ip\);) 83.0018 Tj
-0 -199.361 Td
+0 -199.3606 Td
(4868 if\(ip->type == T_DIR && \(omode & \(O_RDWR|O_WRONLY\)\
-\)\){) 270.848 Tj
-0 -208.854 Td
-(4869 iunlockput\(ip\);) 113.581 Tj
-0 -218.347 Td
+\)\){) 270.8479 Tj
+0 -208.8539 Td
+(4869 iunlockput\(ip\);) 113.5814 Tj
+0 -218.3473 Td
(4870 return -1;) 91.7388 Tj
-0 -227.841 Td
+0 -227.8407 Td
(4871 }) 43.6851 Tj
0 -237.334 Td
(4872 }) 34.9481 Tj
-0 -246.827 Td
+0 -246.8274 Td
(4873 ) 21.8426 Tj
-0 -256.321 Td
+0 -256.3207 Td
(4874 if\(\(f = filealloc\(\)\) == 0 || \(fd = fdalloc\(f\)\) \
-< 0\){) 257.742 Tj
-0 -265.814 Td
+< 0\){) 257.7424 Tj
+0 -265.8141 Td
(4875 if\(f\)) 61.1592 Tj
-0 -275.307 Td
-(4876 fileclose\(f\);) 104.844 Tj
-0 -284.801 Td
-(4877 iunlockput\(ip\);) 104.844 Tj
-0 -294.294 Td
+0 -275.3075 Td
+(4876 fileclose\(f\);) 104.8443 Tj
+0 -284.8008 Td
+(4877 iunlockput\(ip\);) 104.8443 Tj
+0 -294.2942 Td
(4878 return -1;) 83.0018 Tj
-0 -303.788 Td
+0 -303.7875 Td
(4879 }) 34.9481 Tj
-0 -313.281 Td
+0 -313.2809 Td
(4880 iunlock\(ip\);) 83.0018 Tj
-0 -322.774 Td
+0 -322.7743 Td
(4881 ) 21.8426 Tj
-0 -332.268 Td
-(4882 f->type = FD_INODE;) 113.581 Tj
+0 -332.2676 Td
+(4882 f->type = FD_INODE;) 113.5814 Tj
0 -341.761 Td
(4883 f->ip = ip;) 78.6333 Tj
-0 -351.254 Td
+0 -351.2543 Td
(4884 f->off = 0;) 78.6333 Tj
-0 -360.748 Td
-(4885 f->readable = !\(omode & O_WRONLY\);) 179.109 Tj
-0 -370.241 Td
+0 -360.7477 Td
+(4885 f->readable = !\(omode & O_WRONLY\);) 179.1091 Tj
+0 -370.2411 Td
(4886 f->writable = \(omode & O_WRONLY\) || \(omode & O_RDWR\)\
-;) 262.111 Tj
-0 -379.734 Td
+;) 262.1109 Tj
+0 -379.7344 Td
(4887 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(4888 return fd;) 74.2647 Tj
-0 -398.721 Td
+0 -398.7211 Td
(4889 }) 26.2111 Tj
-0 -408.214 Td
+0 -408.2145 Td
(4890 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(4891 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(4892 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(4893 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4894 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4895 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4896 ) 21.8426 Tj
0 -474.668 Td
(4897 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4898 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4899 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 48) 34.9481 Tj
Q
Q
@@ -16961,8 +16947,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -16977,10 +16962,10 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sysfile.c Page 8) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sysfile.c Page 8) 174.7406 Tj
0 -28.4801 Td
(4900 int) 34.9481 Tj
0 -37.9735 Td
@@ -16988,102 +16973,102 @@ q
0 -47.4668 Td
(4902 {) 26.2111 Tj
0 -56.9602 Td
-(4903 struct inode *ip;) 104.844 Tj
+(4903 struct inode *ip;) 104.8443 Tj
0 -66.4535 Td
(4904 char *path;) 78.6333 Tj
0 -75.9469 Td
(4905 int len;) 65.5277 Tj
0 -85.4403 Td
-(4906 int major, minor;) 104.844 Tj
+(4906 int major, minor;) 104.8443 Tj
0 -94.9336 Td
(4907 ) 21.8426 Tj
0 -104.427 Td
-(4908 if\(\(len=argstr\(0, &path\)\) < 0 ||) 170.372 Tj
-0 -113.92 Td
-(4909 argint\(1, &major\) < 0 ||) 148.529 Tj
-0 -123.414 Td
-(4910 argint\(2, &minor\) < 0 ||) 148.529 Tj
-0 -132.907 Td
-(4911 \(ip = create\(path, 0, T_DEV, major, minor\)\) == 0\)) 257.742 Tj
-0 -142.4 Td
+(4908 if\(\(len=argstr\(0, &path\)\) < 0 ||) 170.3721 Tj
+0 -113.9203 Td
+(4909 argint\(1, &major\) < 0 ||) 148.5295 Tj
+0 -123.4137 Td
+(4910 argint\(2, &minor\) < 0 ||) 148.5295 Tj
+0 -132.9071 Td
+(4911 \(ip = create\(path, 0, T_DEV, major, minor\)\) == 0\)) 257.7424 Tj
+0 -142.4004 Td
(4912 return -1;) 83.0018 Tj
-0 -151.894 Td
+0 -151.8938 Td
(4913 iunlockput\(ip\);) 96.1073 Tj
-0 -161.387 Td
+0 -161.3871 Td
(4914 return 0;) 69.8962 Tj
-0 -170.88 Td
+0 -170.8805 Td
(4915 }) 26.2111 Tj
-0 -180.374 Td
+0 -180.3739 Td
(4916 ) 21.8426 Tj
-0 -189.867 Td
+0 -189.8672 Td
(4917 int) 34.9481 Tj
-0 -199.361 Td
+0 -199.3606 Td
(4918 sys_mkdir\(void\)) 87.3703 Tj
-0 -208.854 Td
+0 -208.8539 Td
(4919 {) 26.2111 Tj
-0 -218.347 Td
+0 -218.3473 Td
(4920 char *path;) 78.6333 Tj
-0 -227.841 Td
-(4921 struct inode *ip;) 104.844 Tj
+0 -227.8407 Td
+(4921 struct inode *ip;) 104.8443 Tj
0 -237.334 Td
(4922 ) 21.8426 Tj
-0 -246.827 Td
+0 -246.8274 Td
(4923 if\(argstr\(0, &path\) < 0 || \(ip = create\(path, 0, T_\
-DIR, 0, 0\)\) == 0\)) 327.639 Tj
-0 -256.321 Td
+DIR, 0, 0\)\) == 0\)) 327.6386 Tj
+0 -256.3207 Td
(4924 return -1;) 83.0018 Tj
-0 -265.814 Td
+0 -265.8141 Td
(4925 iunlockput\(ip\);) 96.1073 Tj
-0 -275.307 Td
+0 -275.3075 Td
(4926 return 0;) 69.8962 Tj
-0 -284.801 Td
+0 -284.8008 Td
(4927 }) 26.2111 Tj
-0 -294.294 Td
+0 -294.2942 Td
(4928 ) 21.8426 Tj
-0 -303.788 Td
+0 -303.7875 Td
(4929 int) 34.9481 Tj
-0 -313.281 Td
+0 -313.2809 Td
(4930 sys_chdir\(void\)) 87.3703 Tj
-0 -322.774 Td
+0 -322.7743 Td
(4931 {) 26.2111 Tj
-0 -332.268 Td
+0 -332.2676 Td
(4932 char *path;) 78.6333 Tj
0 -341.761 Td
-(4933 struct inode *ip;) 104.844 Tj
-0 -351.254 Td
+(4933 struct inode *ip;) 104.8443 Tj
+0 -351.2543 Td
(4934 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(4935 if\(argstr\(0, &path\) < 0 || \(ip = namei\(path\)\) == \
-0\)) 253.374 Tj
-0 -370.241 Td
+0\)) 253.3738 Tj
+0 -370.2411 Td
(4936 return -1;) 83.0018 Tj
-0 -379.734 Td
+0 -379.7344 Td
(4937 ilock\(ip\);) 74.2647 Tj
-0 -389.228 Td
-(4938 if\(ip->type != T_DIR\){) 126.687 Tj
-0 -398.721 Td
-(4939 iunlockput\(ip\);) 104.844 Tj
-0 -408.214 Td
+0 -389.2278 Td
+(4938 if\(ip->type != T_DIR\){) 126.6869 Tj
+0 -398.7211 Td
+(4939 iunlockput\(ip\);) 104.8443 Tj
+0 -408.2145 Td
(4940 return -1;) 83.0018 Tj
-0 -417.708 Td
+0 -417.7079 Td
(4941 }) 34.9481 Tj
-0 -427.201 Td
+0 -427.2012 Td
(4942 iunlock\(ip\);) 83.0018 Tj
-0 -436.695 Td
+0 -436.6946 Td
(4943 iput\(cp->cwd\);) 91.7388 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4944 cp->cwd = ip;) 87.3703 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4945 return 0;) 69.8962 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4946 }) 26.2111 Tj
0 -474.668 Td
(4947 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4948 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4949 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 49) 34.9481 Tj
Q
Q
@@ -17098,10 +17083,10 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sysfile.c Page 9) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sysfile.c Page 9) 174.7406 Tj
0 -28.4801 Td
(4950 int) 34.9481 Tj
0 -37.9735 Td
@@ -17109,102 +17094,102 @@ q
0 -47.4668 Td
(4952 {) 26.2111 Tj
0 -56.9602 Td
-(4953 char *path, *argv[20];) 126.687 Tj
+(4953 char *path, *argv[20];) 126.6869 Tj
0 -66.4535 Td
(4954 int i;) 56.7907 Tj
0 -75.9469 Td
-(4955 uint uargv, uarg;) 104.844 Tj
+(4955 uint uargv, uarg;) 104.8443 Tj
0 -85.4403 Td
(4956 ) 21.8426 Tj
0 -94.9336 Td
(4957 if\(argstr\(0, &path\) < 0 || argint\(1, \(int*\)&uargv\)\
- < 0\)) 270.848 Tj
+ < 0\)) 270.8479 Tj
0 -104.427 Td
(4958 return -1;) 83.0018 Tj
-0 -113.92 Td
+0 -113.9203 Td
(4959 memset\(argv, 0, sizeof\(argv\)\);) 161.635 Tj
-0 -123.414 Td
+0 -123.4137 Td
(4960 for\(i=0;; i++\){) 96.1073 Tj
-0 -132.907 Td
-(4961 if\(i >= NELEM\(argv\)\)) 126.687 Tj
-0 -142.4 Td
+0 -132.9071 Td
+(4961 if\(i >= NELEM\(argv\)\)) 126.6869 Tj
+0 -142.4004 Td
(4962 return -1;) 91.7388 Tj
-0 -151.894 Td
-(4963 if\(fetchint\(cp, uargv+4*i, \(int*\)&uarg\) < 0\)) 231.531 Tj
-0 -161.387 Td
+0 -151.8938 Td
+(4963 if\(fetchint\(cp, uargv+4*i, \(int*\)&uarg\) < 0\)) 231.5313 Tj
+0 -161.3871 Td
(4964 return -1;) 91.7388 Tj
-0 -170.88 Td
-(4965 if\(uarg == 0\){) 100.476 Tj
-0 -180.374 Td
-(4966 argv[i] = 0;) 100.476 Tj
-0 -189.867 Td
+0 -170.8805 Td
+(4965 if\(uarg == 0\){) 100.4758 Tj
+0 -180.3739 Td
+(4966 argv[i] = 0;) 100.4758 Tj
+0 -189.8672 Td
(4967 break;) 74.2647 Tj
-0 -199.361 Td
+0 -199.3606 Td
(4968 }) 43.6851 Tj
-0 -208.854 Td
-(4969 if\(fetchstr\(cp, uarg, &argv[i]\) < 0\)) 196.583 Tj
-0 -218.347 Td
+0 -208.8539 Td
+(4969 if\(fetchstr\(cp, uarg, &argv[i]\) < 0\)) 196.5831 Tj
+0 -218.3473 Td
(4970 return -1;) 91.7388 Tj
-0 -227.841 Td
+0 -227.8407 Td
(4971 }) 34.9481 Tj
0 -237.334 Td
-(4972 return exec\(path, argv\);) 135.424 Tj
-0 -246.827 Td
+(4972 return exec\(path, argv\);) 135.4239 Tj
+0 -246.8274 Td
(4973 }) 26.2111 Tj
-0 -256.321 Td
+0 -256.3207 Td
(4974 ) 21.8426 Tj
-0 -265.814 Td
+0 -265.8141 Td
(4975 int) 34.9481 Tj
-0 -275.307 Td
+0 -275.3075 Td
(4976 sys_pipe\(void\)) 83.0018 Tj
-0 -284.801 Td
+0 -284.8008 Td
(4977 {) 26.2111 Tj
-0 -294.294 Td
+0 -294.2942 Td
(4978 int *fd;) 65.5277 Tj
-0 -303.788 Td
-(4979 struct file *rf, *wf;) 122.318 Tj
-0 -313.281 Td
+0 -303.7875 Td
+(4979 struct file *rf, *wf;) 122.3184 Tj
+0 -313.2809 Td
(4980 int fd0, fd1;) 87.3703 Tj
-0 -322.774 Td
+0 -322.7743 Td
(4981 ) 21.8426 Tj
-0 -332.268 Td
-(4982 if\(argptr\(0, \(void*\)&fd, 2*sizeof\(fd[0]\)\) < 0\)) 231.531 Tj
+0 -332.2676 Td
+(4982 if\(argptr\(0, \(void*\)&fd, 2*sizeof\(fd[0]\)\) < 0\)) 231.5313 Tj
0 -341.761 Td
(4983 return -1;) 83.0018 Tj
-0 -351.254 Td
-(4984 if\(pipealloc\(&rf, &wf\) < 0\)) 148.529 Tj
-0 -360.748 Td
+0 -351.2543 Td
+(4984 if\(pipealloc\(&rf, &wf\) < 0\)) 148.5295 Tj
+0 -360.7477 Td
(4985 return -1;) 83.0018 Tj
-0 -370.241 Td
+0 -370.2411 Td
(4986 fd0 = -1;) 69.8962 Tj
-0 -379.734 Td
+0 -379.7344 Td
(4987 if\(\(fd0 = fdalloc\(rf\)\) < 0 || \(fd1 = fdalloc\(wf\)\
-\) < 0\){) 270.848 Tj
-0 -389.228 Td
+\) < 0\){) 270.8479 Tj
+0 -389.2278 Td
(4988 if\(fd0 >= 0\)) 91.7388 Tj
-0 -398.721 Td
-(4989 cp->ofile[fd0] = 0;) 131.055 Tj
-0 -408.214 Td
-(4990 fileclose\(rf\);) 100.476 Tj
-0 -417.708 Td
-(4991 fileclose\(wf\);) 100.476 Tj
-0 -427.201 Td
+0 -398.7211 Td
+(4989 cp->ofile[fd0] = 0;) 131.0554 Tj
+0 -408.2145 Td
+(4990 fileclose\(rf\);) 100.4758 Tj
+0 -417.7079 Td
+(4991 fileclose\(wf\);) 100.4758 Tj
+0 -427.2012 Td
(4992 return -1;) 83.0018 Tj
-0 -436.695 Td
+0 -436.6946 Td
(4993 }) 34.9481 Tj
-0 -446.188 Td
+0 -446.1879 Td
(4994 fd[0] = fd0;) 83.0018 Tj
-0 -455.681 Td
+0 -455.6813 Td
(4995 fd[1] = fd1;) 83.0018 Tj
-0 -465.175 Td
+0 -465.1747 Td
(4996 return 0;) 69.8962 Tj
0 -474.668 Td
(4997 }) 26.2111 Tj
-0 -484.161 Td
+0 -484.1614 Td
(4998 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(4999 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 49) 34.9481 Tj
Q
Q
@@ -17233,8 +17218,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -17249,14 +17233,14 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/exec.c Page 1) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/exec.c Page 1) 161.635 Tj
0 -28.4801 Td
-(5000 #include "types.h") 100.476 Tj
+(5000 #include "types.h") 100.4758 Tj
0 -37.9735 Td
-(5001 #include "param.h") 100.476 Tj
+(5001 #include "param.h") 100.4758 Tj
0 -47.4668 Td
(5002 #include "mmu.h") 91.7388 Tj
0 -56.9602 Td
@@ -17271,92 +17255,92 @@ q
(5007 ) 21.8426 Tj
0 -104.427 Td
(5008 int) 34.9481 Tj
-0 -113.92 Td
-(5009 exec\(char *path, char **argv\)) 148.529 Tj
-0 -123.414 Td
+0 -113.9203 Td
+(5009 exec\(char *path, char **argv\)) 148.5295 Tj
+0 -123.4137 Td
(5010 {) 26.2111 Tj
-0 -132.907 Td
-(5011 char *mem, *s, *last;) 122.318 Tj
-0 -142.4 Td
+0 -132.9071 Td
+(5011 char *mem, *s, *last;) 122.3184 Tj
+0 -142.4004 Td
(5012 int i, argc, arglen, len, off;) 161.635 Tj
-0 -151.894 Td
-(5013 uint sz, sp, argp;) 109.213 Tj
-0 -161.387 Td
-(5014 struct elfhdr elf;) 109.213 Tj
-0 -170.88 Td
-(5015 struct inode *ip;) 104.844 Tj
-0 -180.374 Td
-(5016 struct proghdr ph;) 109.213 Tj
-0 -189.867 Td
+0 -151.8938 Td
+(5013 uint sz, sp, argp;) 109.2129 Tj
+0 -161.3871 Td
+(5014 struct elfhdr elf;) 109.2129 Tj
+0 -170.8805 Td
+(5015 struct inode *ip;) 104.8443 Tj
+0 -180.3739 Td
+(5016 struct proghdr ph;) 109.2129 Tj
+0 -189.8672 Td
(5017 ) 21.8426 Tj
-0 -199.361 Td
-(5018 if\(\(ip = namei\(path\)\) == 0\)) 148.529 Tj
-0 -208.854 Td
+0 -199.3606 Td
+(5018 if\(\(ip = namei\(path\)\) == 0\)) 148.5295 Tj
+0 -208.8539 Td
(5019 return -1;) 83.0018 Tj
-0 -218.347 Td
+0 -218.3473 Td
(5020 ilock\(ip\);) 74.2647 Tj
-0 -227.841 Td
+0 -227.8407 Td
(5021 ) 21.8426 Tj
0 -237.334 Td
-(5022 // Compute memory size of new process.) 196.583 Tj
-0 -246.827 Td
+(5022 // Compute memory size of new process.) 196.5831 Tj
+0 -246.8274 Td
(5023 mem = 0;) 65.5277 Tj
-0 -256.321 Td
+0 -256.3207 Td
(5024 sz = 0;) 61.1592 Tj
-0 -265.814 Td
+0 -265.8141 Td
(5025 ) 21.8426 Tj
-0 -275.307 Td
-(5026 // Program segments.) 117.95 Tj
-0 -284.801 Td
+0 -275.3075 Td
+(5026 // Program segments.) 117.9499 Tj
+0 -284.8008 Td
(5027 if\(readi\(ip, \(char*\)&elf, 0, sizeof\(elf\)\) < sizeo\
-f\(elf\)\)) 275.216 Tj
-0 -294.294 Td
+f\(elf\)\)) 275.2164 Tj
+0 -294.2942 Td
(5028 goto bad;) 78.6333 Tj
-0 -303.788 Td
+0 -303.7875 Td
(5029 if\(elf.magic != ELF_MAGIC\)) 144.161 Tj
-0 -313.281 Td
+0 -313.2809 Td
(5030 goto bad;) 78.6333 Tj
-0 -322.774 Td
+0 -322.7743 Td
(5031 for\(i=0, off=elf.phoff; i<elf.phnum; i++, off+=sizeof\(\
ph\)\){) 288.322 Tj
-0 -332.268 Td
+0 -332.2676 Td
(5032 if\(readi\(ip, \(char*\)&ph, off, sizeof\(ph\)\) != si\
-zeof\(ph\)\)) 283.953 Tj
+zeof\(ph\)\)) 283.9534 Tj
0 -341.761 Td
(5033 goto bad;) 87.3703 Tj
-0 -351.254 Td
+0 -351.2543 Td
(5034 if\(ph.type != ELF_PROG_LOAD\)) 161.635 Tj
-0 -360.748 Td
+0 -360.7477 Td
(5035 continue;) 87.3703 Tj
-0 -370.241 Td
+0 -370.2411 Td
(5036 if\(ph.memsz < ph.filesz\)) 144.161 Tj
-0 -379.734 Td
+0 -379.7344 Td
(5037 goto bad;) 87.3703 Tj
-0 -389.228 Td
-(5038 sz += ph.memsz;) 104.844 Tj
-0 -398.721 Td
+0 -389.2278 Td
+(5038 sz += ph.memsz;) 104.8443 Tj
+0 -398.7211 Td
(5039 }) 34.9481 Tj
-0 -408.214 Td
+0 -408.2145 Td
(5040 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(5041 // Arguments.) 87.3703 Tj
-0 -427.201 Td
+0 -427.2012 Td
(5042 arglen = 0;) 78.6333 Tj
-0 -436.695 Td
-(5043 for\(argc=0; argv[argc]; argc++\)) 166.004 Tj
-0 -446.188 Td
-(5044 arglen += strlen\(argv[i]\) + 1;) 170.372 Tj
-0 -455.681 Td
-(5045 arglen = \(arglen+3\) & ~3;) 139.792 Tj
-0 -465.175 Td
+0 -436.6946 Td
+(5043 for\(argc=0; argv[argc]; argc++\)) 166.0035 Tj
+0 -446.1879 Td
+(5044 arglen += strlen\(argv[argc]\) + 1;) 183.4776 Tj
+0 -455.6813 Td
+(5045 arglen = \(arglen+3\) & ~3;) 139.7925 Tj
+0 -465.1747 Td
(5046 sz += arglen + 4*\(argc+1\);) 144.161 Tj
0 -474.668 Td
(5047 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(5048 // Stack.) 69.8962 Tj
-0 -493.655 Td
+0 -493.6547 Td
(5049 sz += PAGE;) 78.6333 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 50) 34.9481 Tj
Q
Q
@@ -17371,22 +17355,22 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/exec.c Page 2) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/exec.c Page 2) 161.635 Tj
0 -28.4801 Td
-(5050 // Allocate program memory.) 148.529 Tj
+(5050 // Allocate program memory.) 148.5295 Tj
0 -37.9735 Td
-(5051 sz = \(sz+PAGE-1\) & ~\(PAGE-1\);) 157.267 Tj
+(5051 sz = \(sz+PAGE-1\) & ~\(PAGE-1\);) 157.2665 Tj
0 -47.4668 Td
-(5052 mem = kalloc\(sz\);) 104.844 Tj
+(5052 mem = kalloc\(sz\);) 104.8443 Tj
0 -56.9602 Td
(5053 if\(mem == 0\)) 83.0018 Tj
0 -66.4535 Td
(5054 goto bad;) 78.6333 Tj
0 -75.9469 Td
-(5055 memset\(mem, 0, sz\);) 113.581 Tj
+(5055 memset\(mem, 0, sz\);) 113.5814 Tj
0 -85.4403 Td
(5056 ) 21.8426 Tj
0 -94.9336 Td
@@ -17394,92 +17378,92 @@ q
0 -104.427 Td
(5058 for\(i=0, off=elf.phoff; i<elf.phnum; i++, off+=sizeof\(\
ph\)\){) 288.322 Tj
-0 -113.92 Td
+0 -113.9203 Td
(5059 if\(readi\(ip, \(char*\)&ph, off, sizeof\(ph\)\) != si\
-zeof\(ph\)\)) 283.953 Tj
-0 -123.414 Td
+zeof\(ph\)\)) 283.9534 Tj
+0 -123.4137 Td
(5060 goto bad;) 87.3703 Tj
-0 -132.907 Td
+0 -132.9071 Td
(5061 if\(ph.type != ELF_PROG_LOAD\)) 161.635 Tj
-0 -142.4 Td
+0 -142.4004 Td
(5062 continue;) 87.3703 Tj
-0 -151.894 Td
-(5063 if\(ph.va + ph.memsz > sz\)) 148.529 Tj
-0 -161.387 Td
+0 -151.8938 Td
+(5063 if\(ph.va + ph.memsz > sz\)) 148.5295 Tj
+0 -161.3871 Td
(5064 goto bad;) 87.3703 Tj
-0 -170.88 Td
+0 -170.8805 Td
(5065 if\(readi\(ip, mem + ph.va, ph.offset, ph.filesz\) != \
ph.filesz\)) 305.796 Tj
-0 -180.374 Td
+0 -180.3739 Td
(5066 goto bad;) 87.3703 Tj
-0 -189.867 Td
+0 -189.8672 Td
(5067 memset\(mem + ph.va + ph.filesz, 0, ph.memsz - ph.file\
sz\);) 288.322 Tj
-0 -199.361 Td
+0 -199.3606 Td
(5068 }) 34.9481 Tj
-0 -208.854 Td
+0 -208.8539 Td
(5069 iunlockput\(ip\);) 96.1073 Tj
-0 -218.347 Td
+0 -218.3473 Td
(5070 ) 21.8426 Tj
-0 -227.841 Td
-(5071 // Initialize stack.) 117.95 Tj
+0 -227.8407 Td
+(5071 // Initialize stack.) 117.9499 Tj
0 -237.334 Td
(5072 sp = sz;) 65.5277 Tj
-0 -246.827 Td
-(5073 argp = sz - arglen - 4*\(argc+1\);) 170.372 Tj
-0 -256.321 Td
+0 -246.8274 Td
+(5073 argp = sz - arglen - 4*\(argc+1\);) 170.3721 Tj
+0 -256.3207 Td
(5074 ) 21.8426 Tj
-0 -265.814 Td
-(5075 // Copy argv strings and pointers to stack.) 218.426 Tj
-0 -275.307 Td
-(5076 *\(uint*\)\(mem+argp + 4*argc\) = 0; // argv[argc]) 235.9 Tj
-0 -284.801 Td
-(5077 for\(i=argc-1; i>=0; i--\){) 139.792 Tj
-0 -294.294 Td
+0 -265.8141 Td
+(5075 // Copy argv strings and pointers to stack.) 218.4257 Tj
+0 -275.3075 Td
+(5076 *\(uint*\)\(mem+argp + 4*argc\) = 0; // argv[argc]) 235.8998 Tj
+0 -284.8008 Td
+(5077 for\(i=argc-1; i>=0; i--\){) 139.7925 Tj
+0 -294.2942 Td
(5078 len = strlen\(argv[i]\) + 1;) 152.898 Tj
-0 -303.788 Td
+0 -303.7875 Td
(5079 sp -= len;) 83.0018 Tj
-0 -313.281 Td
-(5080 memmove\(mem+sp, argv[i], len\);) 170.372 Tj
-0 -322.774 Td
-(5081 *\(uint*\)\(mem+argp + 4*i\) = sp; // argv[i]) 222.794 Tj
-0 -332.268 Td
+0 -313.2809 Td
+(5080 memmove\(mem+sp, argv[i], len\);) 170.3721 Tj
+0 -322.7743 Td
+(5081 *\(uint*\)\(mem+argp + 4*i\) = sp; // argv[i]) 222.7942 Tj
+0 -332.2676 Td
(5082 }) 34.9481 Tj
0 -341.761 Td
(5083 ) 21.8426 Tj
-0 -351.254 Td
-(5084 // Stack frame for main\(argc, argv\), below arguments.) 262.111 Tj
-0 -360.748 Td
+0 -351.2543 Td
+(5084 // Stack frame for main\(argc, argv\), below arguments.) 262.1109 Tj
+0 -360.7477 Td
(5085 sp = argp;) 74.2647 Tj
-0 -370.241 Td
+0 -370.2411 Td
(5086 sp -= 4;) 65.5277 Tj
-0 -379.734 Td
-(5087 *\(uint*\)\(mem+sp\) = argp;) 135.424 Tj
-0 -389.228 Td
+0 -379.7344 Td
+(5087 *\(uint*\)\(mem+sp\) = argp;) 135.4239 Tj
+0 -389.2278 Td
(5088 sp -= 4;) 65.5277 Tj
-0 -398.721 Td
-(5089 *\(uint*\)\(mem+sp\) = argc;) 135.424 Tj
-0 -408.214 Td
+0 -398.7211 Td
+(5089 *\(uint*\)\(mem+sp\) = argc;) 135.4239 Tj
+0 -408.2145 Td
(5090 sp -= 4;) 65.5277 Tj
-0 -417.708 Td
-(5091 *\(uint*\)\(mem+sp\) = 0xffffffff; // fake return pc) 249.005 Tj
-0 -427.201 Td
+0 -417.7079 Td
+(5091 *\(uint*\)\(mem+sp\) = 0xffffffff; // fake return pc) 249.0053 Tj
+0 -427.2012 Td
(5092 ) 21.8426 Tj
-0 -436.695 Td
-(5093 // Save program name for debugging.) 183.478 Tj
-0 -446.188 Td
-(5094 for\(last=s=path; *s; s++\)) 139.792 Tj
-0 -455.681 Td
+0 -436.6946 Td
+(5093 // Save program name for debugging.) 183.4776 Tj
+0 -446.1879 Td
+(5094 for\(last=s=path; *s; s++\)) 139.7925 Tj
+0 -455.6813 Td
(5095 if\(*s == '/'\)) 96.1073 Tj
-0 -465.175 Td
+0 -465.1747 Td
(5096 last = s+1;) 96.1073 Tj
0 -474.668 Td
-(5097 safestrcpy\(cp->name, last, sizeof\(cp->name\)\);) 227.163 Tj
-0 -484.161 Td
+(5097 safestrcpy\(cp->name, last, sizeof\(cp->name\)\);) 227.1628 Tj
+0 -484.1614 Td
(5098 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(5099 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 50) 34.9481 Tj
Q
Q
@@ -17508,8 +17492,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -17524,111 +17507,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/exec.c Page 3) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/exec.c Page 3) 161.635 Tj
0 -28.4801 Td
-(5100 // Commit to the new image.) 148.529 Tj
+(5100 // Commit to the new image.) 148.5295 Tj
0 -37.9735 Td
-(5101 kfree\(cp->mem, cp->sz\);) 131.055 Tj
+(5101 kfree\(cp->mem, cp->sz\);) 131.0554 Tj
0 -47.4668 Td
(5102 cp->mem = mem;) 91.7388 Tj
0 -56.9602 Td
(5103 cp->sz = sz;) 83.0018 Tj
0 -66.4535 Td
-(5104 cp->tf->eip = elf.entry; // main) 174.741 Tj
+(5104 cp->tf->eip = elf.entry; // main) 174.7406 Tj
0 -75.9469 Td
-(5105 cp->tf->esp = sp;) 104.844 Tj
+(5105 cp->tf->esp = sp;) 104.8443 Tj
0 -85.4403 Td
(5106 setupsegs\(cp\);) 91.7388 Tj
0 -94.9336 Td
(5107 return 0;) 69.8962 Tj
0 -104.427 Td
(5108 ) 21.8426 Tj
-0 -113.92 Td
+0 -113.9203 Td
(5109 bad:) 43.6851 Tj
-0 -123.414 Td
+0 -123.4137 Td
(5110 if\(mem\)) 61.1592 Tj
-0 -132.907 Td
-(5111 kfree\(mem, sz\);) 104.844 Tj
-0 -142.4 Td
+0 -132.9071 Td
+(5111 kfree\(mem, sz\);) 104.8443 Tj
+0 -142.4004 Td
(5112 iunlockput\(ip\);) 96.1073 Tj
-0 -151.894 Td
+0 -151.8938 Td
(5113 return -1;) 74.2647 Tj
-0 -161.387 Td
+0 -161.3871 Td
(5114 }) 26.2111 Tj
-0 -170.88 Td
+0 -170.8805 Td
(5115 ) 21.8426 Tj
-0 -180.374 Td
+0 -180.3739 Td
(5116 ) 21.8426 Tj
-0 -189.867 Td
+0 -189.8672 Td
(5117 ) 21.8426 Tj
-0 -199.361 Td
+0 -199.3606 Td
(5118 ) 21.8426 Tj
-0 -208.854 Td
+0 -208.8539 Td
(5119 ) 21.8426 Tj
-0 -218.347 Td
+0 -218.3473 Td
(5120 ) 21.8426 Tj
-0 -227.841 Td
+0 -227.8407 Td
(5121 ) 21.8426 Tj
0 -237.334 Td
(5122 ) 21.8426 Tj
-0 -246.827 Td
+0 -246.8274 Td
(5123 ) 21.8426 Tj
-0 -256.321 Td
+0 -256.3207 Td
(5124 ) 21.8426 Tj
-0 -265.814 Td
+0 -265.8141 Td
(5125 ) 21.8426 Tj
-0 -275.307 Td
+0 -275.3075 Td
(5126 ) 21.8426 Tj
-0 -284.801 Td
+0 -284.8008 Td
(5127 ) 21.8426 Tj
-0 -294.294 Td
+0 -294.2942 Td
(5128 ) 21.8426 Tj
-0 -303.788 Td
+0 -303.7875 Td
(5129 ) 21.8426 Tj
-0 -313.281 Td
+0 -313.2809 Td
(5130 ) 21.8426 Tj
-0 -322.774 Td
+0 -322.7743 Td
(5131 ) 21.8426 Tj
-0 -332.268 Td
+0 -332.2676 Td
(5132 ) 21.8426 Tj
0 -341.761 Td
(5133 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(5134 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(5135 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(5136 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(5137 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(5138 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(5139 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(5140 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(5141 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(5142 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(5143 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(5144 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(5145 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(5146 ) 21.8426 Tj
0 -474.668 Td
(5147 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(5148 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(5149 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 51) 34.9481 Tj
Q
Q
@@ -17643,16 +17626,16 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/pipe.c Page 1) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/pipe.c Page 1) 161.635 Tj
0 -28.4801 Td
-(5150 #include "types.h") 100.476 Tj
+(5150 #include "types.h") 100.4758 Tj
0 -37.9735 Td
(5151 #include "defs.h") 96.1073 Tj
0 -47.4668 Td
-(5152 #include "param.h") 100.476 Tj
+(5152 #include "param.h") 100.4758 Tj
0 -56.9602 Td
(5153 #include "mmu.h") 91.7388 Tj
0 -66.4535 Td
@@ -17660,95 +17643,95 @@ q
0 -75.9469 Td
(5155 #include "file.h") 96.1073 Tj
0 -85.4403 Td
-(5156 #include "spinlock.h") 113.581 Tj
+(5156 #include "spinlock.h") 113.5814 Tj
0 -94.9336 Td
(5157 ) 21.8426 Tj
0 -104.427 Td
-(5158 #define PIPESIZE 512) 109.213 Tj
-0 -113.92 Td
+(5158 #define PIPESIZE 512) 109.2129 Tj
+0 -113.9203 Td
(5159 ) 21.8426 Tj
-0 -123.414 Td
+0 -123.4137 Td
(5160 struct pipe {) 78.6333 Tj
-0 -132.907 Td
-(5161 int readopen; // read fd is still open) 205.32 Tj
-0 -142.4 Td
-(5162 int writeopen; // write fd is still open) 209.689 Tj
-0 -151.894 Td
-(5163 int writep; // next index to write) 196.583 Tj
-0 -161.387 Td
-(5164 int readp; // next index to read) 192.215 Tj
-0 -170.88 Td
-(5165 struct spinlock lock;) 122.318 Tj
-0 -180.374 Td
-(5166 char data[PIPESIZE];) 117.95 Tj
-0 -189.867 Td
+0 -132.9071 Td
+(5161 int readopen; // read fd is still open) 205.3202 Tj
+0 -142.4004 Td
+(5162 int writeopen; // write fd is still open) 209.6887 Tj
+0 -151.8938 Td
+(5163 uint writep; // next index to write) 196.5831 Tj
+0 -161.3871 Td
+(5164 uint readp; // next index to read) 192.2146 Tj
+0 -170.8805 Td
+(5165 struct spinlock lock;) 122.3184 Tj
+0 -180.3739 Td
+(5166 char data[PIPESIZE];) 117.9499 Tj
+0 -189.8672 Td
(5167 };) 30.5796 Tj
-0 -199.361 Td
+0 -199.3606 Td
(5168 ) 21.8426 Tj
-0 -208.854 Td
+0 -208.8539 Td
(5169 int) 34.9481 Tj
-0 -218.347 Td
-(5170 pipealloc\(struct file **f0, struct file **f1\)) 218.426 Tj
-0 -227.841 Td
+0 -218.3473 Td
+(5170 pipealloc\(struct file **f0, struct file **f1\)) 218.4257 Tj
+0 -227.8407 Td
(5171 {) 26.2111 Tj
0 -237.334 Td
(5172 struct pipe *p;) 96.1073 Tj
-0 -246.827 Td
+0 -246.8274 Td
(5173 ) 21.8426 Tj
-0 -256.321 Td
+0 -256.3207 Td
(5174 p = 0;) 56.7907 Tj
-0 -265.814 Td
+0 -265.8141 Td
(5175 *f0 = *f1 = 0;) 91.7388 Tj
-0 -275.307 Td
+0 -275.3075 Td
(5176 if\(\(*f0 = filealloc\(\)\) == 0 || \(*f1 = filealloc\(\)\
-\) == 0\)) 275.216 Tj
-0 -284.801 Td
+\) == 0\)) 275.2164 Tj
+0 -284.8008 Td
(5177 goto bad;) 78.6333 Tj
-0 -294.294 Td
-(5178 if\(\(p = \(struct pipe*\)kalloc\(PAGE\)\) == 0\)) 209.689 Tj
-0 -303.788 Td
+0 -294.2942 Td
+(5178 if\(\(p = \(struct pipe*\)kalloc\(PAGE\)\) == 0\)) 209.6887 Tj
+0 -303.7875 Td
(5179 goto bad;) 78.6333 Tj
-0 -313.281 Td
-(5180 p->readopen = 1;) 100.476 Tj
-0 -322.774 Td
-(5181 p->writeopen = 1;) 104.844 Tj
-0 -332.268 Td
+0 -313.2809 Td
+(5180 p->readopen = 1;) 100.4758 Tj
+0 -322.7743 Td
+(5181 p->writeopen = 1;) 104.8443 Tj
+0 -332.2676 Td
(5182 p->writep = 0;) 91.7388 Tj
0 -341.761 Td
(5183 p->readp = 0;) 87.3703 Tj
-0 -351.254 Td
-(5184 initlock\(&p->lock, "pipe"\);) 148.529 Tj
-0 -360.748 Td
-(5185 \(*f0\)->type = FD_PIPE;) 126.687 Tj
-0 -370.241 Td
-(5186 \(*f0\)->readable = 1;) 117.95 Tj
-0 -379.734 Td
-(5187 \(*f0\)->writable = 0;) 117.95 Tj
-0 -389.228 Td
-(5188 \(*f0\)->pipe = p;) 100.476 Tj
-0 -398.721 Td
-(5189 \(*f1\)->type = FD_PIPE;) 126.687 Tj
-0 -408.214 Td
-(5190 \(*f1\)->readable = 0;) 117.95 Tj
-0 -417.708 Td
-(5191 \(*f1\)->writable = 1;) 117.95 Tj
-0 -427.201 Td
-(5192 \(*f1\)->pipe = p;) 100.476 Tj
-0 -436.695 Td
+0 -351.2543 Td
+(5184 initlock\(&p->lock, "pipe"\);) 148.5295 Tj
+0 -360.7477 Td
+(5185 \(*f0\)->type = FD_PIPE;) 126.6869 Tj
+0 -370.2411 Td
+(5186 \(*f0\)->readable = 1;) 117.9499 Tj
+0 -379.7344 Td
+(5187 \(*f0\)->writable = 0;) 117.9499 Tj
+0 -389.2278 Td
+(5188 \(*f0\)->pipe = p;) 100.4758 Tj
+0 -398.7211 Td
+(5189 \(*f1\)->type = FD_PIPE;) 126.6869 Tj
+0 -408.2145 Td
+(5190 \(*f1\)->readable = 0;) 117.9499 Tj
+0 -417.7079 Td
+(5191 \(*f1\)->writable = 1;) 117.9499 Tj
+0 -427.2012 Td
+(5192 \(*f1\)->pipe = p;) 100.4758 Tj
+0 -436.6946 Td
(5193 return 0;) 69.8962 Tj
-0 -446.188 Td
+0 -446.1879 Td
(5194 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(5195 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(5196 ) 21.8426 Tj
0 -474.668 Td
(5197 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(5198 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(5199 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 51) 34.9481 Tj
Q
Q
@@ -17777,8 +17760,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -17793,111 +17775,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
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+/F8_0 8.7022 Tf
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0 -28.4801 Td
(5200 bad:) 43.6851 Tj
0 -37.9735 Td
(5201 if\(p\)) 52.4222 Tj
0 -47.4668 Td
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+(5202 kfree\(\(char*\)p, PAGE\);) 135.4239 Tj
0 -56.9602 Td
(5203 if\(*f0\){) 65.5277 Tj
0 -66.4535 Td
-(5204 \(*f0\)->type = FD_NONE;) 135.424 Tj
+(5204 \(*f0\)->type = FD_NONE;) 135.4239 Tj
0 -75.9469 Td
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+(5205 fileclose\(*f0\);) 104.8443 Tj
0 -85.4403 Td
(5206 }) 34.9481 Tj
0 -94.9336 Td
(5207 if\(*f1\){) 65.5277 Tj
0 -104.427 Td
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+(5208 \(*f1\)->type = FD_NONE;) 135.4239 Tj
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+(5209 fileclose\(*f1\);) 104.8443 Tj
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(5210 }) 34.9481 Tj
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(5211 return -1;) 74.2647 Tj
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(5212 }) 26.2111 Tj
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(5213 ) 21.8426 Tj
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(5214 void) 39.3166 Tj
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(5216 {) 26.2111 Tj
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(5218 if\(writable\){) 87.3703 Tj
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-(5220 wakeup\(&p->readp\);) 117.95 Tj
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(5221 } else {) 65.5277 Tj
0 -237.334 Td
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+(5222 p->readopen = 0;) 109.2129 Tj
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(5224 }) 34.9481 Tj
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(5226 ) 21.8426 Tj
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(5229 }) 26.2111 Tj
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(5230 ) 21.8426 Tj
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(5231 ) 21.8426 Tj
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0 -341.761 Td
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(5235 ) 21.8426 Tj
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(5236 ) 21.8426 Tj
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(5237 ) 21.8426 Tj
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(5239 ) 21.8426 Tj
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(5240 ) 21.8426 Tj
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(5241 ) 21.8426 Tj
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(5242 ) 21.8426 Tj
-0 -436.695 Td
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(5243 ) 21.8426 Tj
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(5244 ) 21.8426 Tj
-0 -455.681 Td
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(5245 ) 21.8426 Tj
-0 -465.175 Td
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(5246 ) 21.8426 Tj
0 -474.668 Td
(5247 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(5248 ) 21.8426 Tj
-0 -493.655 Td
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(5249 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 52) 34.9481 Tj
Q
Q
@@ -17912,14 +17894,14 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/pipe.c Page 3) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/pipe.c Page 3) 161.635 Tj
0 -28.4801 Td
(5250 int) 34.9481 Tj
0 -37.9735 Td
-(5251 pipewrite\(struct pipe *p, char *addr, int n\)) 214.057 Tj
+(5251 pipewrite\(struct pipe *p, char *addr, int n\)) 214.0572 Tj
0 -47.4668 Td
(5252 {) 26.2111 Tj
0 -56.9602 Td
@@ -17927,96 +17909,96 @@ q
0 -66.4535 Td
(5254 ) 21.8426 Tj
0 -75.9469 Td
-(5255 acquire\(&p->lock\);) 109.213 Tj
+(5255 acquire\(&p->lock\);) 109.2129 Tj
0 -85.4403 Td
-(5256 for\(i = 0; i < n; i++\){) 131.055 Tj
+(5256 for\(i = 0; i < n; i++\){) 131.0554 Tj
0 -94.9336 Td
-(5257 while\(\(\(p->writep + 1\) % PIPESIZE\) == p->readp\){) 249.005 Tj
+(5257 while\(p->writep == p->readp + PIPESIZE\) {) 218.4257 Tj
0 -104.427 Td
-(5258 if\(p->readopen == 0 || cp->killed\){) 200.952 Tj
-0 -113.92 Td
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-0 -123.414 Td
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+0 -132.9071 Td
(5261 }) 52.4222 Tj
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-0 -151.894 Td
-(5263 sleep\(&p->writep, &p->lock\);) 170.372 Tj
-0 -161.387 Td
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+(5262 wakeup\(&p->readp\);) 126.6869 Tj
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+0 -161.3871 Td
(5264 }) 43.6851 Tj
-0 -170.88 Td
-(5265 p->data[p->writep] = addr[i];) 166.004 Tj
-0 -180.374 Td
-(5266 p->writep = \(p->writep + 1\) % PIPESIZE;) 209.689 Tj
-0 -189.867 Td
-(5267 }) 34.9481 Tj
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-(5268 wakeup\(&p->readp\);) 109.213 Tj
-0 -208.854 Td
-(5269 release\(&p->lock\);) 109.213 Tj
-0 -218.347 Td
-(5270 return i;) 69.8962 Tj
-0 -227.841 Td
-(5271 }) 26.2111 Tj
+0 -170.8805 Td
+(5265 p->data[p->writep++ % PIPESIZE] = addr[i];) 222.7942 Tj
+0 -180.3739 Td
+(5266 }) 34.9481 Tj
+0 -189.8672 Td
+(5267 wakeup\(&p->readp\);) 109.2129 Tj
+0 -199.3606 Td
+(5268 release\(&p->lock\);) 109.2129 Tj
+0 -208.8539 Td
+(5269 return i;) 69.8962 Tj
+0 -218.3473 Td
+(5270 }) 26.2111 Tj
+0 -227.8407 Td
+(5271 ) 21.8426 Tj
0 -237.334 Td
-(5272 ) 21.8426 Tj
-0 -246.827 Td
-(5273 int) 34.9481 Tj
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-(5274 piperead\(struct pipe *p, char *addr, int n\)) 209.689 Tj
-0 -265.814 Td
-(5275 {) 26.2111 Tj
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-(5276 int i;) 56.7907 Tj
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-(5277 ) 21.8426 Tj
-0 -294.294 Td
-(5278 acquire\(&p->lock\);) 109.213 Tj
-0 -303.788 Td
-(5279 while\(p->readp == p->writep && p->writeopen\){) 227.163 Tj
-0 -313.281 Td
-(5280 if\(cp->killed\){) 104.844 Tj
-0 -322.774 Td
-(5281 release\(&p->lock\);) 126.687 Tj
-0 -332.268 Td
-(5282 return -1;) 91.7388 Tj
+(5272 int) 34.9481 Tj
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+(5273 piperead\(struct pipe *p, char *addr, int n\)) 209.6887 Tj
+0 -256.3207 Td
+(5274 {) 26.2111 Tj
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+(5275 int i;) 56.7907 Tj
+0 -275.3075 Td
+(5276 ) 21.8426 Tj
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+(5277 acquire\(&p->lock\);) 109.2129 Tj
+0 -294.2942 Td
+(5278 while\(p->readp == p->writep && p->writeopen\){) 227.1628 Tj
+0 -303.7875 Td
+(5279 if\(cp->killed\){) 104.8443 Tj
+0 -313.2809 Td
+(5280 release\(&p->lock\);) 126.6869 Tj
+0 -322.7743 Td
+(5281 return -1;) 91.7388 Tj
+0 -332.2676 Td
+(5282 }) 43.6851 Tj
0 -341.761 Td
-(5283 }) 43.6851 Tj
-0 -351.254 Td
-(5284 sleep\(&p->readp, &p->lock\);) 157.267 Tj
-0 -360.748 Td
-(5285 }) 34.9481 Tj
-0 -370.241 Td
-(5286 for\(i = 0; i < n; i++\){) 131.055 Tj
-0 -379.734 Td
-(5287 if\(p->readp == p->writep\)) 148.529 Tj
-0 -389.228 Td
-(5288 break;) 74.2647 Tj
-0 -398.721 Td
-(5289 addr[i] = p->data[p->readp];) 161.635 Tj
-0 -408.214 Td
-(5290 p->readp = \(p->readp + 1\) % PIPESIZE;) 200.952 Tj
-0 -417.708 Td
-(5291 }) 34.9481 Tj
-0 -427.201 Td
-(5292 wakeup\(&p->writep\);) 113.581 Tj
-0 -436.695 Td
-(5293 release\(&p->lock\);) 109.213 Tj
-0 -446.188 Td
-(5294 return i;) 69.8962 Tj
-0 -455.681 Td
-(5295 }) 26.2111 Tj
-0 -465.175 Td
+(5283 sleep\(&p->readp, &p->lock\);) 157.2665 Tj
+0 -351.2543 Td
+(5284 }) 34.9481 Tj
+0 -360.7477 Td
+(5285 for\(i = 0; i < n; i++\){) 131.0554 Tj
+0 -370.2411 Td
+(5286 if\(p->readp == p->writep\)) 148.5295 Tj
+0 -379.7344 Td
+(5287 break;) 74.2647 Tj
+0 -389.2278 Td
+(5288 addr[i] = p->data[p->readp++ % PIPESIZE];) 218.4257 Tj
+0 -398.7211 Td
+(5289 }) 34.9481 Tj
+0 -408.2145 Td
+(5290 wakeup\(&p->writep\);) 113.5814 Tj
+0 -417.7079 Td
+(5291 release\(&p->lock\);) 109.2129 Tj
+0 -427.2012 Td
+(5292 return i;) 69.8962 Tj
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+(5293 }) 26.2111 Tj
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+(5294 ) 21.8426 Tj
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+(5295 ) 21.8426 Tj
+0 -465.1747 Td
(5296 ) 21.8426 Tj
0 -474.668 Td
(5297 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(5298 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(5299 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 52) 34.9481 Tj
Q
Q
@@ -18045,8 +18027,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -18061,12 +18042,12 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/string.c Page 1) 170.372 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/string.c Page 1) 170.3721 Tj
0 -28.4801 Td
-(5300 #include "types.h") 100.476 Tj
+(5300 #include "types.h") 100.4758 Tj
0 -37.9735 Td
(5301 ) 21.8426 Tj
0 -47.4668 Td
@@ -18083,89 +18064,89 @@ q
(5307 d = \(char*\)dst;) 96.1073 Tj
0 -104.427 Td
(5308 while\(n-- > 0\)) 91.7388 Tj
-0 -113.92 Td
+0 -113.9203 Td
(5309 *d++ = c;) 78.6333 Tj
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+0 -123.4137 Td
(5310 ) 21.8426 Tj
-0 -132.907 Td
+0 -132.9071 Td
(5311 return dst;) 78.6333 Tj
-0 -142.4 Td
+0 -142.4004 Td
(5312 }) 26.2111 Tj
-0 -151.894 Td
+0 -151.8938 Td
(5313 ) 21.8426 Tj
-0 -161.387 Td
+0 -161.3871 Td
(5314 int) 34.9481 Tj
-0 -170.88 Td
-(5315 memcmp\(const void *v1, const void *v2, uint n\)) 222.794 Tj
-0 -180.374 Td
+0 -170.8805 Td
+(5315 memcmp\(const void *v1, const void *v2, uint n\)) 222.7942 Tj
+0 -180.3739 Td
(5316 {) 26.2111 Tj
-0 -189.867 Td
-(5317 const uchar *s1, *s2;) 122.318 Tj
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+0 -189.8672 Td
+(5317 const uchar *s1, *s2;) 122.3184 Tj
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(5318 ) 21.8426 Tj
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+0 -208.8539 Td
(5319 s1 = v1;) 65.5277 Tj
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+0 -218.3473 Td
(5320 s2 = v2;) 65.5277 Tj
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(5321 while\(n-- > 0\){) 96.1073 Tj
0 -237.334 Td
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+(5322 if\(*s1 != *s2\)) 100.4758 Tj
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+(5323 return *s1 - *s2;) 122.3184 Tj
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(5324 s1++, s2++;) 87.3703 Tj
-0 -265.814 Td
+0 -265.8141 Td
(5325 }) 34.9481 Tj
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+0 -275.3075 Td
(5326 ) 21.8426 Tj
-0 -284.801 Td
+0 -284.8008 Td
(5327 return 0;) 69.8962 Tj
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+0 -294.2942 Td
(5328 }) 26.2111 Tj
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+0 -303.7875 Td
(5329 ) 21.8426 Tj
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(5330 void*) 43.6851 Tj
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(5332 {) 26.2111 Tj
0 -341.761 Td
(5333 const char *s;) 91.7388 Tj
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(5334 char *d;) 65.5277 Tj
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(5335 ) 21.8426 Tj
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(5336 s = src;) 65.5277 Tj
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(5337 d = dst;) 65.5277 Tj
-0 -389.228 Td
-(5338 if\(s < d && s + n > d\){) 131.055 Tj
-0 -398.721 Td
+0 -389.2278 Td
+(5338 if\(s < d && s + n > d\){) 131.0554 Tj
+0 -398.7211 Td
(5339 s += n;) 69.8962 Tj
-0 -408.214 Td
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(5340 d += n;) 69.8962 Tj
-0 -417.708 Td
-(5341 while\(n-- > 0\)) 100.476 Tj
-0 -427.201 Td
-(5342 *--d = *--s;) 100.476 Tj
-0 -436.695 Td
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+(5341 while\(n-- > 0\)) 100.4758 Tj
+0 -427.2012 Td
+(5342 *--d = *--s;) 100.4758 Tj
+0 -436.6946 Td
(5343 } else) 56.7907 Tj
-0 -446.188 Td
-(5344 while\(n-- > 0\)) 100.476 Tj
-0 -455.681 Td
-(5345 *d++ = *s++;) 100.476 Tj
-0 -465.175 Td
+0 -446.1879 Td
+(5344 while\(n-- > 0\)) 100.4758 Tj
+0 -455.6813 Td
+(5345 *d++ = *s++;) 100.4758 Tj
+0 -465.1747 Td
(5346 ) 21.8426 Tj
0 -474.668 Td
(5347 return dst;) 78.6333 Tj
-0 -484.161 Td
+0 -484.1614 Td
(5348 }) 26.2111 Tj
-0 -493.655 Td
+0 -493.6547 Td
(5349 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 53) 34.9481 Tj
Q
Q
@@ -18180,111 +18161,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/string.c Page 2) 170.372 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/string.c Page 2) 170.3721 Tj
0 -28.4801 Td
(5350 int) 34.9481 Tj
0 -37.9735 Td
-(5351 strncmp\(const char *p, const char *q, uint n\)) 218.426 Tj
+(5351 strncmp\(const char *p, const char *q, uint n\)) 218.4257 Tj
0 -47.4668 Td
(5352 {) 26.2111 Tj
0 -56.9602 Td
(5353 while\(n > 0 && *p && *p == *q\)) 161.635 Tj
0 -66.4535 Td
-(5354 n--, p++, q++;) 100.476 Tj
+(5354 n--, p++, q++;) 100.4758 Tj
0 -75.9469 Td
(5355 if\(n == 0\)) 74.2647 Tj
0 -85.4403 Td
(5356 return 0;) 78.6333 Tj
0 -94.9336 Td
-(5357 return \(uchar\)*p - \(uchar\)*q;) 157.267 Tj
+(5357 return \(uchar\)*p - \(uchar\)*q;) 157.2665 Tj
0 -104.427 Td
(5358 }) 26.2111 Tj
-0 -113.92 Td
+0 -113.9203 Td
(5359 ) 21.8426 Tj
-0 -123.414 Td
+0 -123.4137 Td
(5360 char*) 43.6851 Tj
-0 -132.907 Td
-(5361 strncpy\(char *s, const char *t, int n\)) 187.846 Tj
-0 -142.4 Td
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+(5361 strncpy\(char *s, const char *t, int n\)) 187.8461 Tj
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(5362 {) 26.2111 Tj
-0 -151.894 Td
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(5363 char *os;) 69.8962 Tj
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(5364 ) 21.8426 Tj
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(5365 os = s;) 61.1592 Tj
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-(5366 while\(n-- > 0 && \(*s++ = *t++\) != 0\)) 187.846 Tj
-0 -189.867 Td
+0 -180.3739 Td
+(5366 while\(n-- > 0 && \(*s++ = *t++\) != 0\)) 187.8461 Tj
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(5367 ;) 43.6851 Tj
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+0 -199.3606 Td
(5368 while\(n-- > 0\)) 91.7388 Tj
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(5369 *s++ = 0;) 78.6333 Tj
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(5370 return os;) 74.2647 Tj
-0 -227.841 Td
+0 -227.8407 Td
(5371 }) 26.2111 Tj
0 -237.334 Td
(5372 ) 21.8426 Tj
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(5374 char*) 43.6851 Tj
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(5380 if\(n <= 0\)) 74.2647 Tj
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(5381 return os;) 83.0018 Tj
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(5385 return os;) 74.2647 Tj
-0 -370.241 Td
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(5386 }) 26.2111 Tj
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(5387 ) 21.8426 Tj
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(5396 }) 26.2111 Tj
0 -474.668 Td
(5397 ) 21.8426 Tj
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(5398 ) 21.8426 Tj
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(5399 ) 21.8426 Tj
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(Sheet 53) 34.9481 Tj
Q
Q
@@ -18313,8 +18294,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -18329,116 +18309,116 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
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-(Aug 30 10:08 2007 xv6/mp.h Page 1) 152.898 Tj
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+(Sep 3 10:05 2008 xv6/mp.h Page 1) 152.898 Tj
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-(5400 // See MultiProcessor Specification Version 1.[14]) 240.268 Tj
+(5400 // See MultiProcessor Specification Version 1.[14]) 240.2683 Tj
0 -37.9735 Td
(5401 ) 21.8426 Tj
0 -47.4668 Td
-(5402 struct mp { // floating pointer) 209.689 Tj
+(5402 struct mp { // floating pointer) 209.6887 Tj
0 -56.9602 Td
-(5403 uchar signature[4]; // "_MP_") 200.952 Tj
+(5403 uchar signature[4]; // "_MP_") 200.9517 Tj
0 -66.4535 Td
(5404 void *physaddr; // phys addr of MP config \
table) 297.059 Tj
0 -75.9469 Td
-(5405 uchar length; // 1) 179.109 Tj
+(5405 uchar length; // 1) 179.1091 Tj
0 -85.4403 Td
-(5406 uchar specrev; // [14]) 192.215 Tj
+(5406 uchar specrev; // [14]) 192.2146 Tj
0 -94.9336 Td
(5407 uchar checksum; // all bytes must add up t\
o 0) 288.322 Tj
0 -104.427 Td
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-0 -113.92 Td
+(5408 uchar type; // MP system config type) 266.4794 Tj
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(5409 uchar imcrp;) 83.0018 Tj
-0 -123.414 Td
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+(5410 uchar reserved[3];) 109.2129 Tj
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(5411 };) 30.5796 Tj
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(5412 ) 21.8426 Tj
-0 -151.894 Td
-(5413 struct mpconf { // configuration table header) 253.374 Tj
-0 -161.387 Td
-(5414 uchar signature[4]; // "PCMP") 200.952 Tj
-0 -170.88 Td
-(5415 ushort length; // total table length) 253.374 Tj
-0 -180.374 Td
-(5416 uchar version; // [14]) 192.215 Tj
-0 -189.867 Td
+0 -151.8938 Td
+(5413 struct mpconf { // configuration table header) 253.3738 Tj
+0 -161.3871 Td
+(5414 uchar signature[4]; // "PCMP") 200.9517 Tj
+0 -170.8805 Td
+(5415 ushort length; // total table length) 253.3738 Tj
+0 -180.3739 Td
+(5416 uchar version; // [14]) 192.2146 Tj
+0 -189.8672 Td
(5417 uchar checksum; // all bytes must add up t\
o 0) 288.322 Tj
-0 -199.361 Td
-(5418 uchar product[20]; // product id) 218.426 Tj
-0 -208.854 Td
-(5419 uint *oemtable; // OEM table pointer) 249.005 Tj
-0 -218.347 Td
-(5420 ushort oemlength; // OEM table length) 244.637 Tj
-0 -227.841 Td
-(5421 ushort entry; // entry count) 222.794 Tj
+0 -199.3606 Td
+(5418 uchar product[20]; // product id) 218.4257 Tj
+0 -208.8539 Td
+(5419 uint *oemtable; // OEM table pointer) 249.0053 Tj
+0 -218.3473 Td
+(5420 ushort oemlength; // OEM table length) 244.6368 Tj
+0 -227.8407 Td
+(5421 ushort entry; // entry count) 222.7942 Tj
0 -237.334 Td
-(5422 uint *lapicaddr; // address of local APIC) 266.479 Tj
-0 -246.827 Td
-(5423 ushort xlength; // extended table length) 266.479 Tj
-0 -256.321 Td
-(5424 uchar xchecksum; // extended table checksum) 275.216 Tj
-0 -265.814 Td
+(5422 uint *lapicaddr; // address of local APIC) 266.4794 Tj
+0 -246.8274 Td
+(5423 ushort xlength; // extended table length) 266.4794 Tj
+0 -256.3207 Td
+(5424 uchar xchecksum; // extended table checksum) 275.2164 Tj
+0 -265.8141 Td
(5425 uchar reserved;) 96.1073 Tj
-0 -275.307 Td
+0 -275.3075 Td
(5426 };) 30.5796 Tj
-0 -284.801 Td
+0 -284.8008 Td
(5427 ) 21.8426 Tj
-0 -294.294 Td
-(5428 struct mpproc { // processor table entry) 231.531 Tj
-0 -303.788 Td
-(5429 uchar type; // entry type \(0\)) 235.9 Tj
-0 -313.281 Td
-(5430 uchar apicid; // local APIC id) 231.531 Tj
-0 -322.774 Td
-(5431 uchar version; // local APIC verison) 253.374 Tj
-0 -332.268 Td
-(5432 uchar flags; // CPU flags) 214.057 Tj
+0 -294.2942 Td
+(5428 struct mpproc { // processor table entry) 231.5313 Tj
+0 -303.7875 Td
+(5429 uchar type; // entry type \(0\)) 235.8998 Tj
+0 -313.2809 Td
+(5430 uchar apicid; // local APIC id) 231.5313 Tj
+0 -322.7743 Td
+(5431 uchar version; // local APIC verison) 253.3738 Tj
+0 -332.2676 Td
+(5432 uchar flags; // CPU flags) 214.0572 Tj
0 -341.761 Td
(5433 #define MPBOOT 0x02 // This proc is the boot\
-strap processor.) 345.113 Tj
-0 -351.254 Td
-(5434 uchar signature[4]; // CPU signature) 231.531 Tj
-0 -360.748 Td
+strap processor.) 345.1126 Tj
+0 -351.2543 Td
+(5434 uchar signature[4]; // CPU signature) 231.5313 Tj
+0 -360.7477 Td
(5435 uint feature; // feature flags from CPUI\
-D instruction) 332.007 Tj
-0 -370.241 Td
-(5436 uchar reserved[8];) 109.213 Tj
-0 -379.734 Td
+D instruction) 332.0071 Tj
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(5437 };) 30.5796 Tj
-0 -389.228 Td
+0 -389.2278 Td
(5438 ) 21.8426 Tj
-0 -398.721 Td
-(5439 struct mpioapic { // I/O APIC table entry) 227.163 Tj
-0 -408.214 Td
-(5440 uchar type; // entry type \(2\)) 235.9 Tj
-0 -417.708 Td
-(5441 uchar apicno; // I/O APIC id) 222.794 Tj
-0 -427.201 Td
-(5442 uchar version; // I/O APIC version) 244.637 Tj
-0 -436.695 Td
-(5443 uchar flags; // I/O APIC flags) 235.9 Tj
-0 -446.188 Td
-(5444 uint *addr; // I/O APIC address) 240.268 Tj
-0 -455.681 Td
+0 -398.7211 Td
+(5439 struct mpioapic { // I/O APIC table entry) 227.1628 Tj
+0 -408.2145 Td
+(5440 uchar type; // entry type \(2\)) 235.8998 Tj
+0 -417.7079 Td
+(5441 uchar apicno; // I/O APIC id) 222.7942 Tj
+0 -427.2012 Td
+(5442 uchar version; // I/O APIC version) 244.6368 Tj
+0 -436.6946 Td
+(5443 uchar flags; // I/O APIC flags) 235.8998 Tj
+0 -446.1879 Td
+(5444 uint *addr; // I/O APIC address) 240.2683 Tj
+0 -455.6813 Td
(5445 };) 30.5796 Tj
-0 -465.175 Td
+0 -465.1747 Td
(5446 ) 21.8426 Tj
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(5447 ) 21.8426 Tj
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(5448 ) 21.8426 Tj
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(5449 ) 21.8426 Tj
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Q
@@ -18453,111 +18433,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
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+(5450 // Table entry types) 109.2129 Tj
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-(5451 #define MPPROC 0x00 // One per processor) 214.057 Tj
+(5451 #define MPPROC 0x00 // One per processor) 214.0572 Tj
0 -47.4668 Td
-(5452 #define MPBUS 0x01 // One per bus) 187.846 Tj
+(5452 #define MPBUS 0x01 // One per bus) 187.8461 Tj
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-(5453 #define MPIOAPIC 0x02 // One per I/O APIC) 209.689 Tj
+(5453 #define MPIOAPIC 0x02 // One per I/O APIC) 209.6887 Tj
0 -66.4535 Td
-(5454 #define MPIOINTR 0x03 // One per bus interrupt source) 262.111 Tj
+(5454 #define MPIOINTR 0x03 // One per bus interrupt source) 262.1109 Tj
0 -75.9469 Td
-(5455 #define MPLINTR 0x04 // One per system interrupt source) 275.216 Tj
+(5455 #define MPLINTR 0x04 // One per system interrupt source) 275.2164 Tj
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(5456 ) 21.8426 Tj
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(5458 ) 21.8426 Tj
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(5459 ) 21.8426 Tj
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(5460 ) 21.8426 Tj
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(5461 ) 21.8426 Tj
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(5462 ) 21.8426 Tj
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(5463 ) 21.8426 Tj
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(5464 ) 21.8426 Tj
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(5465 ) 21.8426 Tj
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(5477 ) 21.8426 Tj
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(5485 ) 21.8426 Tj
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(5486 ) 21.8426 Tj
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(5494 ) 21.8426 Tj
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(5495 ) 21.8426 Tj
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(5496 ) 21.8426 Tj
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(5497 ) 21.8426 Tj
-0 -484.161 Td
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(5498 ) 21.8426 Tj
-0 -493.655 Td
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(5499 ) 21.8426 Tj
-0 -522.135 Td
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(Sheet 54) 34.9481 Tj
Q
Q
@@ -18586,8 +18566,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -18602,113 +18581,113 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/mp.c Page 1) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/mp.c Page 1) 152.898 Tj
0 -28.4801 Td
(5500 // Multiprocessor bootstrap.) 144.161 Tj
0 -37.9735 Td
-(5501 // Search memory for MP description structures.) 227.163 Tj
+(5501 // Search memory for MP description structures.) 227.1628 Tj
0 -47.4668 Td
(5502 // http://developer.intel.com/design/pentium/datashts/2420\
-1606.pdf) 310.165 Tj
+1606.pdf) 310.1645 Tj
0 -56.9602 Td
(5503 ) 21.8426 Tj
0 -66.4535 Td
-(5504 #include "types.h") 100.476 Tj
+(5504 #include "types.h") 100.4758 Tj
0 -75.9469 Td
(5505 #include "defs.h") 96.1073 Tj
0 -85.4403 Td
-(5506 #include "param.h") 100.476 Tj
+(5506 #include "param.h") 100.4758 Tj
0 -94.9336 Td
(5507 #include "mp.h") 87.3703 Tj
0 -104.427 Td
(5508 #include "x86.h") 91.7388 Tj
-0 -113.92 Td
+0 -113.9203 Td
(5509 #include "mmu.h") 91.7388 Tj
-0 -123.414 Td
+0 -123.4137 Td
(5510 #include "proc.h") 96.1073 Tj
-0 -132.907 Td
+0 -132.9071 Td
(5511 ) 21.8426 Tj
-0 -142.4 Td
-(5512 struct cpu cpus[NCPU];) 117.95 Tj
-0 -151.894 Td
-(5513 static struct cpu *bcpu;) 126.687 Tj
-0 -161.387 Td
+0 -142.4004 Td
+(5512 struct cpu cpus[NCPU];) 117.9499 Tj
+0 -151.8938 Td
+(5513 static struct cpu *bcpu;) 126.6869 Tj
+0 -161.3871 Td
(5514 int ismp;) 61.1592 Tj
-0 -170.88 Td
+0 -170.8805 Td
(5515 int ncpu;) 61.1592 Tj
-0 -180.374 Td
+0 -180.3739 Td
(5516 uchar ioapic_id;) 91.7388 Tj
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+0 -189.8672 Td
(5517 ) 21.8426 Tj
-0 -199.361 Td
+0 -199.3606 Td
(5518 int) 34.9481 Tj
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+0 -208.8539 Td
(5519 mp_bcpu\(void\)) 78.6333 Tj
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+0 -218.3473 Td
(5520 {) 26.2111 Tj
-0 -227.841 Td
-(5521 return bcpu-cpus;) 104.844 Tj
+0 -227.8407 Td
+(5521 return bcpu-cpus;) 104.8443 Tj
0 -237.334 Td
(5522 }) 26.2111 Tj
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+0 -246.8274 Td
(5523 ) 21.8426 Tj
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+0 -256.3207 Td
(5524 static uchar) 74.2647 Tj
-0 -265.814 Td
-(5525 sum\(uchar *addr, int len\)) 131.055 Tj
-0 -275.307 Td
+0 -265.8141 Td
+(5525 sum\(uchar *addr, int len\)) 131.0554 Tj
+0 -275.3075 Td
(5526 {) 26.2111 Tj
-0 -284.801 Td
+0 -284.8008 Td
(5527 int i, sum;) 78.6333 Tj
-0 -294.294 Td
+0 -294.2942 Td
(5528 ) 21.8426 Tj
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+0 -303.7875 Td
(5529 sum = 0;) 65.5277 Tj
-0 -313.281 Td
-(5530 for\(i=0; i<len; i++\)) 117.95 Tj
-0 -322.774 Td
-(5531 sum += addr[i];) 104.844 Tj
-0 -332.268 Td
+0 -313.2809 Td
+(5530 for\(i=0; i<len; i++\)) 117.9499 Tj
+0 -322.7743 Td
+(5531 sum += addr[i];) 104.8443 Tj
+0 -332.2676 Td
(5532 return sum;) 78.6333 Tj
0 -341.761 Td
(5533 }) 26.2111 Tj
-0 -351.254 Td
+0 -351.2543 Td
(5534 ) 21.8426 Tj
-0 -360.748 Td
-(5535 // Look for an MP structure in the len bytes at addr.) 253.374 Tj
-0 -370.241 Td
+0 -360.7477 Td
+(5535 // Look for an MP structure in the len bytes at addr.) 253.3738 Tj
+0 -370.2411 Td
(5536 static struct mp*) 96.1073 Tj
-0 -379.734 Td
+0 -379.7344 Td
(5537 mp_search1\(uchar *addr, int len\)) 161.635 Tj
-0 -389.228 Td
+0 -389.2278 Td
(5538 {) 26.2111 Tj
-0 -398.721 Td
+0 -398.7211 Td
(5539 uchar *e, *p;) 87.3703 Tj
-0 -408.214 Td
+0 -408.2145 Td
(5540 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(5541 e = addr+len;) 87.3703 Tj
-0 -427.201 Td
-(5542 for\(p = addr; p < e; p += sizeof\(struct mp\)\)) 222.794 Tj
-0 -436.695 Td
+0 -427.2012 Td
+(5542 for\(p = addr; p < e; p += sizeof\(struct mp\)\)) 222.7942 Tj
+0 -436.6946 Td
(5543 if\(memcmp\(p, "_MP_", 4\) == 0 && sum\(p, sizeof\(str\
uct mp\)\) == 0\)) 314.533 Tj
-0 -446.188 Td
-(5544 return \(struct mp*\)p;) 139.792 Tj
-0 -455.681 Td
+0 -446.1879 Td
+(5544 return \(struct mp*\)p;) 139.7925 Tj
+0 -455.6813 Td
(5545 return 0;) 69.8962 Tj
-0 -465.175 Td
+0 -465.1747 Td
(5546 }) 26.2111 Tj
0 -474.668 Td
(5547 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(5548 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(5549 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 55) 34.9481 Tj
Q
Q
@@ -18723,21 +18702,21 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/mp.c Page 2) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/mp.c Page 2) 152.898 Tj
0 -28.4801 Td
(5550 // Search for the MP Floating Pointer Structure, which acc\
-ording to the) 332.007 Tj
+ording to the) 332.0071 Tj
0 -37.9735 Td
-(5551 // spec is in one of the following three locations:) 244.637 Tj
+(5551 // spec is in one of the following three locations:) 244.6368 Tj
0 -47.4668 Td
-(5552 // 1\) in the first KB of the EBDA;) 170.372 Tj
+(5552 // 1\) in the first KB of the EBDA;) 170.3721 Tj
0 -56.9602 Td
-(5553 // 2\) in the last KB of system base memory;) 209.689 Tj
+(5553 // 2\) in the last KB of system base memory;) 209.6887 Tj
0 -66.4535 Td
-(5554 // 3\) in the BIOS ROM between 0xE0000 and 0xFFFFF.) 240.268 Tj
+(5554 // 3\) in the BIOS ROM between 0xE0000 and 0xFFFFF.) 240.2683 Tj
0 -75.9469 Td
(5555 static struct mp*) 96.1073 Tj
0 -85.4403 Td
@@ -18746,91 +18725,91 @@ ording to the) 332.007 Tj
(5557 {) 26.2111 Tj
0 -104.427 Td
(5558 uchar *bda;) 78.6333 Tj
-0 -113.92 Td
+0 -113.9203 Td
(5559 uint p;) 61.1592 Tj
-0 -123.414 Td
+0 -123.4137 Td
(5560 struct mp *mp;) 91.7388 Tj
-0 -132.907 Td
+0 -132.9071 Td
(5561 ) 21.8426 Tj
-0 -142.4 Td
-(5562 bda = \(uchar*\)0x400;) 117.95 Tj
-0 -151.894 Td
-(5563 if\(\(p = \(bda[0x0F]<<8\)|bda[0x0E]\)\){) 183.478 Tj
-0 -161.387 Td
-(5564 if\(\(mp = mp_search1\(\(uchar*\)p, 1024\)\)\)) 205.32 Tj
-0 -170.88 Td
+0 -142.4004 Td
+(5562 bda = \(uchar*\)0x400;) 117.9499 Tj
+0 -151.8938 Td
+(5563 if\(\(p = \(\(bda[0x0F]<<8\)|bda[0x0E]\) << 4\)\){) 214.0572 Tj
+0 -161.3871 Td
+(5564 if\(\(mp = mp_search1\(\(uchar*\)p, 1024\)\)\)) 205.3202 Tj
+0 -170.8805 Td
(5565 return mp;) 91.7388 Tj
-0 -180.374 Td
+0 -180.3739 Td
(5566 } else {) 65.5277 Tj
-0 -189.867 Td
-(5567 p = \(\(bda[0x14]<<8\)|bda[0x13]\)*1024;) 196.583 Tj
-0 -199.361 Td
-(5568 if\(\(mp = mp_search1\(\(uchar*\)p-1024, 1024\)\)\)) 227.163 Tj
-0 -208.854 Td
+0 -189.8672 Td
+(5567 p = \(\(bda[0x14]<<8\)|bda[0x13]\)*1024;) 196.5831 Tj
+0 -199.3606 Td
+(5568 if\(\(mp = mp_search1\(\(uchar*\)p-1024, 1024\)\)\)) 227.1628 Tj
+0 -208.8539 Td
(5569 return mp;) 91.7388 Tj
-0 -218.347 Td
+0 -218.3473 Td
(5570 }) 34.9481 Tj
-0 -227.841 Td
-(5571 return mp_search1\(\(uchar*\)0xF0000, 0x10000\);) 222.794 Tj
+0 -227.8407 Td
+(5571 return mp_search1\(\(uchar*\)0xF0000, 0x10000\);) 222.7942 Tj
0 -237.334 Td
(5572 }) 26.2111 Tj
-0 -246.827 Td
+0 -246.8274 Td
(5573 ) 21.8426 Tj
-0 -256.321 Td
-(5574 // Search for an MP configuration table. For now,) 240.268 Tj
-0 -265.814 Td
+0 -256.3207 Td
+(5574 // Search for an MP configuration table. For now,) 240.2683 Tj
+0 -265.8141 Td
(5575 // don't accept the default configurations \(physaddr == 0\
-\).) 279.585 Tj
-0 -275.307 Td
+\).) 279.5849 Tj
+0 -275.3075 Td
(5576 // Check for correct signature, calculate the checksum and\
-,) 279.585 Tj
-0 -284.801 Td
-(5577 // if correct, check the version.) 166.004 Tj
-0 -294.294 Td
-(5578 // To do: check extended table checksum.) 196.583 Tj
-0 -303.788 Td
-(5579 static struct mpconf*) 113.581 Tj
-0 -313.281 Td
-(5580 mp_config\(struct mp **pmp\)) 135.424 Tj
-0 -322.774 Td
+,) 279.5849 Tj
+0 -284.8008 Td
+(5577 // if correct, check the version.) 166.0035 Tj
+0 -294.2942 Td
+(5578 // To do: check extended table checksum.) 196.5831 Tj
+0 -303.7875 Td
+(5579 static struct mpconf*) 113.5814 Tj
+0 -313.2809 Td
+(5580 mp_config\(struct mp **pmp\)) 135.4239 Tj
+0 -322.7743 Td
(5581 {) 26.2111 Tj
-0 -332.268 Td
-(5582 struct mpconf *conf;) 117.95 Tj
+0 -332.2676 Td
+(5582 struct mpconf *conf;) 117.9499 Tj
0 -341.761 Td
(5583 struct mp *mp;) 91.7388 Tj
-0 -351.254 Td
+0 -351.2543 Td
(5584 ) 21.8426 Tj
-0 -360.748 Td
-(5585 if\(\(mp = mp_search\(\)\) == 0 || mp->physaddr == 0\)) 240.268 Tj
-0 -370.241 Td
+0 -360.7477 Td
+(5585 if\(\(mp = mp_search\(\)\) == 0 || mp->physaddr == 0\)) 240.2683 Tj
+0 -370.2411 Td
(5586 return 0;) 78.6333 Tj
-0 -379.734 Td
-(5587 conf = \(struct mpconf*\)mp->physaddr;) 187.846 Tj
-0 -389.228 Td
-(5588 if\(memcmp\(conf, "PCMP", 4\) != 0\)) 170.372 Tj
-0 -398.721 Td
+0 -379.7344 Td
+(5587 conf = \(struct mpconf*\)mp->physaddr;) 187.8461 Tj
+0 -389.2278 Td
+(5588 if\(memcmp\(conf, "PCMP", 4\) != 0\)) 170.3721 Tj
+0 -398.7211 Td
(5589 return 0;) 78.6333 Tj
-0 -408.214 Td
-(5590 if\(conf->version != 1 && conf->version != 4\)) 222.794 Tj
-0 -417.708 Td
+0 -408.2145 Td
+(5590 if\(conf->version != 1 && conf->version != 4\)) 222.7942 Tj
+0 -417.7079 Td
(5591 return 0;) 78.6333 Tj
-0 -427.201 Td
-(5592 if\(sum\(\(uchar*\)conf, conf->length\) != 0\)) 205.32 Tj
-0 -436.695 Td
+0 -427.2012 Td
+(5592 if\(sum\(\(uchar*\)conf, conf->length\) != 0\)) 205.3202 Tj
+0 -436.6946 Td
(5593 return 0;) 78.6333 Tj
-0 -446.188 Td
+0 -446.1879 Td
(5594 *pmp = mp;) 74.2647 Tj
-0 -455.681 Td
+0 -455.6813 Td
(5595 return conf;) 83.0018 Tj
-0 -465.175 Td
+0 -465.1747 Td
(5596 }) 26.2111 Tj
0 -474.668 Td
(5597 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(5598 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(5599 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 55) 34.9481 Tj
Q
Q
@@ -18859,8 +18838,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -18875,10 +18853,10 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/mp.c Page 3) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/mp.c Page 3) 152.898 Tj
0 -28.4801 Td
(5600 void) 39.3166 Tj
0 -37.9735 Td
@@ -18890,99 +18868,99 @@ q
0 -66.4535 Td
(5604 struct mp *mp;) 91.7388 Tj
0 -75.9469 Td
-(5605 struct mpconf *conf;) 117.95 Tj
+(5605 struct mpconf *conf;) 117.9499 Tj
0 -85.4403 Td
-(5606 struct mpproc *proc;) 117.95 Tj
+(5606 struct mpproc *proc;) 117.9499 Tj
0 -94.9336 Td
-(5607 struct mpioapic *ioapic;) 135.424 Tj
+(5607 struct mpioapic *ioapic;) 135.4239 Tj
0 -104.427 Td
(5608 ) 21.8426 Tj
-0 -113.92 Td
-(5609 bcpu = &cpus[ncpu];) 113.581 Tj
-0 -123.414 Td
-(5610 if\(\(conf = mp_config\(&mp\)\) == 0\)) 170.372 Tj
-0 -132.907 Td
+0 -113.9203 Td
+(5609 bcpu = &cpus[ncpu];) 113.5814 Tj
+0 -123.4137 Td
+(5610 if\(\(conf = mp_config\(&mp\)\) == 0\)) 170.3721 Tj
+0 -132.9071 Td
(5611 return;) 69.8962 Tj
-0 -142.4 Td
+0 -142.4004 Td
(5612 ) 21.8426 Tj
-0 -151.894 Td
+0 -151.8938 Td
(5613 ismp = 1;) 69.8962 Tj
-0 -161.387 Td
-(5614 lapic = \(uint*\)conf->lapicaddr;) 166.004 Tj
-0 -170.88 Td
+0 -161.3871 Td
+(5614 lapic = \(uint*\)conf->lapicaddr;) 166.0035 Tj
+0 -170.8805 Td
(5615 ) 21.8426 Tj
-0 -180.374 Td
+0 -180.3739 Td
(5616 for\(p=\(uchar*\)\(conf+1\), e=\(uchar*\)conf+conf->leng\
-th; p<e; \){) 292.69 Tj
-0 -189.867 Td
+th; p<e; \){) 292.6905 Tj
+0 -189.8672 Td
(5617 switch\(*p\){) 87.3703 Tj
-0 -199.361 Td
+0 -199.3606 Td
(5618 case MPPROC:) 91.7388 Tj
-0 -208.854 Td
-(5619 proc = \(struct mpproc*\)p;) 157.267 Tj
-0 -218.347 Td
-(5620 cpus[ncpu].apicid = proc->apicid;) 192.215 Tj
-0 -227.841 Td
+0 -208.8539 Td
+(5619 proc = \(struct mpproc*\)p;) 157.2665 Tj
+0 -218.3473 Td
+(5620 cpus[ncpu].apicid = proc->apicid;) 192.2146 Tj
+0 -227.8407 Td
(5621 if\(proc->flags & MPBOOT\)) 152.898 Tj
0 -237.334 Td
-(5622 bcpu = &cpus[ncpu];) 139.792 Tj
-0 -246.827 Td
+(5622 bcpu = &cpus[ncpu];) 139.7925 Tj
+0 -246.8274 Td
(5623 ncpu++;) 78.6333 Tj
-0 -256.321 Td
-(5624 p += sizeof\(struct mpproc\);) 166.004 Tj
-0 -265.814 Td
+0 -256.3207 Td
+(5624 p += sizeof\(struct mpproc\);) 166.0035 Tj
+0 -265.8141 Td
(5625 continue;) 87.3703 Tj
-0 -275.307 Td
-(5626 case MPIOAPIC:) 100.476 Tj
-0 -284.801 Td
-(5627 ioapic = \(struct mpioapic*\)p;) 174.741 Tj
-0 -294.294 Td
-(5628 ioapic_id = ioapic->apicno;) 166.004 Tj
-0 -303.788 Td
-(5629 p += sizeof\(struct mpioapic\);) 174.741 Tj
-0 -313.281 Td
+0 -275.3075 Td
+(5626 case MPIOAPIC:) 100.4758 Tj
+0 -284.8008 Td
+(5627 ioapic = \(struct mpioapic*\)p;) 174.7406 Tj
+0 -294.2942 Td
+(5628 ioapic_id = ioapic->apicno;) 166.0035 Tj
+0 -303.7875 Td
+(5629 p += sizeof\(struct mpioapic\);) 174.7406 Tj
+0 -313.2809 Td
(5630 continue;) 87.3703 Tj
-0 -322.774 Td
+0 -322.7743 Td
(5631 case MPBUS:) 87.3703 Tj
-0 -332.268 Td
-(5632 case MPIOINTR:) 100.476 Tj
+0 -332.2676 Td
+(5632 case MPIOINTR:) 100.4758 Tj
0 -341.761 Td
(5633 case MPLINTR:) 96.1073 Tj
-0 -351.254 Td
+0 -351.2543 Td
(5634 p += 8;) 78.6333 Tj
-0 -360.748 Td
+0 -360.7477 Td
(5635 continue;) 87.3703 Tj
-0 -370.241 Td
+0 -370.2411 Td
(5636 default:) 74.2647 Tj
-0 -379.734 Td
-(5637 cprintf\("mp_init: unknown config type %x\\n", *p\);) 262.111 Tj
-0 -389.228 Td
-(5638 panic\("mp_init"\);) 122.318 Tj
-0 -398.721 Td
+0 -379.7344 Td
+(5637 cprintf\("mp_init: unknown config type %x\\n", *p\);) 262.1109 Tj
+0 -389.2278 Td
+(5638 panic\("mp_init"\);) 122.3184 Tj
+0 -398.7211 Td
(5639 }) 43.6851 Tj
-0 -408.214 Td
+0 -408.2145 Td
(5640 }) 34.9481 Tj
-0 -417.708 Td
+0 -417.7079 Td
(5641 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(5642 if\(mp->imcrp\){) 91.7388 Tj
-0 -436.695 Td
+0 -436.6946 Td
(5643 // Bochs doesn't support IMCR, so this doesn't run on \
-Bochs.) 301.427 Tj
-0 -446.188 Td
-(5644 // But it would on real hardware.) 183.478 Tj
-0 -455.681 Td
-(5645 outb\(0x22, 0x70\); // Select IMCR) 187.846 Tj
-0 -465.175 Td
+Bochs.) 301.4275 Tj
+0 -446.1879 Td
+(5644 // But it would on real hardware.) 183.4776 Tj
+0 -455.6813 Td
+(5645 outb\(0x22, 0x70\); // Select IMCR) 187.8461 Tj
+0 -465.1747 Td
(5646 outb\(0x23, inb\(0x23\) | 1\); // Mask external inter\
-rupts.) 283.953 Tj
+rupts.) 283.9534 Tj
0 -474.668 Td
(5647 }) 34.9481 Tj
-0 -484.161 Td
+0 -484.1614 Td
(5648 }) 26.2111 Tj
-0 -493.655 Td
+0 -493.6547 Td
(5649 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 56) 34.9481 Tj
Q
Q
@@ -18997,122 +18975,122 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/lapic.c Page 1) 166.004 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/lapic.c Page 1) 166.0035 Tj
0 -28.4801 Td
-(5650 // The local APIC manages internal \(non-I/O\) interrupts.) 266.479 Tj
+(5650 // The local APIC manages internal \(non-I/O\) interrupts.) 266.4794 Tj
0 -37.9735 Td
(5651 // See Chapter 8 & Appendix C of Intel processor manual vo\
lume 3.) 305.796 Tj
0 -47.4668 Td
(5652 ) 21.8426 Tj
0 -56.9602 Td
-(5653 #include "types.h") 100.476 Tj
+(5653 #include "types.h") 100.4758 Tj
0 -66.4535 Td
-(5654 #include "traps.h") 100.476 Tj
+(5654 #include "defs.h") 96.1073 Tj
0 -75.9469 Td
-(5655 ) 21.8426 Tj
+(5655 #include "traps.h") 100.4758 Tj
0 -85.4403 Td
-(5656 // Local APIC registers, divided by 4 for use as uint[] in\
-dices.) 301.427 Tj
+(5656 #include "mmu.h") 91.7388 Tj
0 -94.9336 Td
-(5657 #define ID \(0x0020/4\) // ID) 170.372 Tj
+(5657 #include "x86.h") 91.7388 Tj
0 -104.427 Td
-(5658 #define VER \(0x0030/4\) // Version) 192.215 Tj
-0 -113.92 Td
-(5659 #define TPR \(0x0080/4\) // Task Priority) 218.426 Tj
-0 -123.414 Td
-(5660 #define EOI \(0x00B0/4\) // EOI) 174.741 Tj
-0 -132.907 Td
-(5661 #define SVR \(0x00F0/4\) // Spurious Interrupt Vecto\
-r) 270.848 Tj
-0 -142.4 Td
-(5662 #define ENABLE 0x00000100 // Unit Enable) 231.531 Tj
-0 -151.894 Td
-(5663 #define ESR \(0x0280/4\) // Error Status) 214.057 Tj
-0 -161.387 Td
-(5664 #define ICRLO \(0x0300/4\) // Interrupt Command) 235.9 Tj
-0 -170.88 Td
-(5665 #define INIT 0x00000500 // INIT/RESET) 227.163 Tj
-0 -180.374 Td
-(5666 #define STARTUP 0x00000600 // Startup IPI) 231.531 Tj
-0 -189.867 Td
-(5667 #define DELIVS 0x00001000 // Delivery status) 249.005 Tj
-0 -199.361 Td
-(5668 #define ASSERT 0x00004000 // Assert interrupt \(vs\
+(5658 ) 21.8426 Tj
+0 -113.9203 Td
+(5659 // Local APIC registers, divided by 4 for use as uint[] in\
+dices.) 301.4275 Tj
+0 -123.4137 Td
+(5660 #define ID \(0x0020/4\) // ID) 170.3721 Tj
+0 -132.9071 Td
+(5661 #define VER \(0x0030/4\) // Version) 192.2146 Tj
+0 -142.4004 Td
+(5662 #define TPR \(0x0080/4\) // Task Priority) 218.4257 Tj
+0 -151.8938 Td
+(5663 #define EOI \(0x00B0/4\) // EOI) 174.7406 Tj
+0 -161.3871 Td
+(5664 #define SVR \(0x00F0/4\) // Spurious Interrupt Vecto\
+r) 270.8479 Tj
+0 -170.8805 Td
+(5665 #define ENABLE 0x00000100 // Unit Enable) 231.5313 Tj
+0 -180.3739 Td
+(5666 #define ESR \(0x0280/4\) // Error Status) 214.0572 Tj
+0 -189.8672 Td
+(5667 #define ICRLO \(0x0300/4\) // Interrupt Command) 235.8998 Tj
+0 -199.3606 Td
+(5668 #define INIT 0x00000500 // INIT/RESET) 227.1628 Tj
+0 -208.8539 Td
+(5669 #define STARTUP 0x00000600 // Startup IPI) 231.5313 Tj
+0 -218.3473 Td
+(5670 #define DELIVS 0x00001000 // Delivery status) 249.0053 Tj
+0 -227.8407 Td
+(5671 #define ASSERT 0x00004000 // Assert interrupt \(vs\
deassert\)) 314.533 Tj
-0 -208.854 Td
-(5669 #define LEVEL 0x00008000 // Level triggered) 249.005 Tj
-0 -218.347 Td
-(5670 #define BCAST 0x00080000 // Send to all APICs, in\
-cluding self.) 332.007 Tj
-0 -227.841 Td
-(5671 #define ICRHI \(0x0310/4\) // Interrupt Command [63:32\
-]) 270.848 Tj
0 -237.334 Td
-(5672 #define TIMER \(0x0320/4\) // Local Vector Table 0 \(T\
-IMER\)) 283.953 Tj
-0 -246.827 Td
-(5673 #define X1 0x0000000B // divide counts by 1) 262.111 Tj
-0 -256.321 Td
-(5674 #define PERIODIC 0x00020000 // Periodic) 218.426 Tj
-0 -265.814 Td
-(5675 #define PCINT \(0x0340/4\) // Performance Counter LVT) 262.111 Tj
-0 -275.307 Td
-(5676 #define LINT0 \(0x0350/4\) // Local Vector Table 1 \(L\
-INT0\)) 283.953 Tj
-0 -284.801 Td
-(5677 #define LINT1 \(0x0360/4\) // Local Vector Table 2 \(L\
-INT1\)) 283.953 Tj
-0 -294.294 Td
-(5678 #define ERROR \(0x0370/4\) // Local Vector Table 3 \(E\
-RROR\)) 283.953 Tj
-0 -303.788 Td
-(5679 #define MASKED 0x00010000 // Interrupt masked) 253.374 Tj
-0 -313.281 Td
-(5680 #define TICR \(0x0380/4\) // Timer Initial Count) 244.637 Tj
-0 -322.774 Td
-(5681 #define TCCR \(0x0390/4\) // Timer Current Count) 244.637 Tj
-0 -332.268 Td
-(5682 #define TDCR \(0x03E0/4\) // Timer Divide Configurati\
-on) 275.216 Tj
+(5672 #define LEVEL 0x00008000 // Level triggered) 249.0053 Tj
+0 -246.8274 Td
+(5673 #define BCAST 0x00080000 // Send to all APICs, in\
+cluding self.) 332.0071 Tj
+0 -256.3207 Td
+(5674 #define ICRHI \(0x0310/4\) // Interrupt Command [63:32\
+]) 270.8479 Tj
+0 -265.8141 Td
+(5675 #define TIMER \(0x0320/4\) // Local Vector Table 0 \(T\
+IMER\)) 283.9534 Tj
+0 -275.3075 Td
+(5676 #define X1 0x0000000B // divide counts by 1) 262.1109 Tj
+0 -284.8008 Td
+(5677 #define PERIODIC 0x00020000 // Periodic) 218.4257 Tj
+0 -294.2942 Td
+(5678 #define PCINT \(0x0340/4\) // Performance Counter LVT) 262.1109 Tj
+0 -303.7875 Td
+(5679 #define LINT0 \(0x0350/4\) // Local Vector Table 1 \(L\
+INT0\)) 283.9534 Tj
+0 -313.2809 Td
+(5680 #define LINT1 \(0x0360/4\) // Local Vector Table 2 \(L\
+INT1\)) 283.9534 Tj
+0 -322.7743 Td
+(5681 #define ERROR \(0x0370/4\) // Local Vector Table 3 \(E\
+RROR\)) 283.9534 Tj
+0 -332.2676 Td
+(5682 #define MASKED 0x00010000 // Interrupt masked) 253.3738 Tj
0 -341.761 Td
-(5683 ) 21.8426 Tj
-0 -351.254 Td
-(5684 volatile uint *lapic; // Initialized in mp.c) 218.426 Tj
-0 -360.748 Td
-(5685 ) 21.8426 Tj
-0 -370.241 Td
+(5683 #define TICR \(0x0380/4\) // Timer Initial Count) 244.6368 Tj
+0 -351.2543 Td
+(5684 #define TCCR \(0x0390/4\) // Timer Current Count) 244.6368 Tj
+0 -360.7477 Td
+(5685 #define TDCR \(0x03E0/4\) // Timer Divide Configurati\
+on) 275.2164 Tj
+0 -370.2411 Td
(5686 ) 21.8426 Tj
-0 -379.734 Td
-(5687 ) 21.8426 Tj
-0 -389.228 Td
+0 -379.7344 Td
+(5687 volatile uint *lapic; // Initialized in mp.c) 218.4257 Tj
+0 -389.2278 Td
(5688 ) 21.8426 Tj
-0 -398.721 Td
-(5689 ) 21.8426 Tj
-0 -408.214 Td
-(5690 ) 21.8426 Tj
-0 -417.708 Td
-(5691 ) 21.8426 Tj
-0 -427.201 Td
-(5692 ) 21.8426 Tj
-0 -436.695 Td
-(5693 ) 21.8426 Tj
-0 -446.188 Td
-(5694 ) 21.8426 Tj
-0 -455.681 Td
+0 -398.7211 Td
+(5689 static void) 69.8962 Tj
+0 -408.2145 Td
+(5690 lapicw\(int index, int value\)) 144.161 Tj
+0 -417.7079 Td
+(5691 {) 26.2111 Tj
+0 -427.2012 Td
+(5692 lapic[index] = value;) 122.3184 Tj
+0 -436.6946 Td
+(5693 lapic[ID]; // wait for write to finish, by reading) 253.3738 Tj
+0 -446.1879 Td
+(5694 }) 26.2111 Tj
+0 -455.6813 Td
(5695 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(5696 ) 21.8426 Tj
0 -474.668 Td
(5697 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(5698 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(5699 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 56) 34.9481 Tj
Q
Q
@@ -19141,8 +19119,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -19157,10 +19134,10 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/lapic.c Page 2) 166.004 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/lapic.c Page 2) 166.0035 Tj
0 -28.4801 Td
(5700 void) 39.3166 Tj
0 -37.9735 Td
@@ -19174,97 +19151,98 @@ q
0 -75.9469 Td
(5705 ) 21.8426 Tj
0 -85.4403 Td
-(5706 // Enable local APIC; set spurious interrupt vector.) 257.742 Tj
+(5706 // Enable local APIC; set spurious interrupt vector.) 257.7424 Tj
0 -94.9336 Td
-(5707 lapic[SVR] = ENABLE | \(IRQ_OFFSET+IRQ_SPURIOUS\);) 240.268 Tj
+(5707 lapicw\(SVR, ENABLE | \(IRQ_OFFSET+IRQ_SPURIOUS\)\);) 240.2683 Tj
0 -104.427 Td
(5708 ) 21.8426 Tj
-0 -113.92 Td
-(5709 // The timer repeatedly counts down at bus frequency) 257.742 Tj
-0 -123.414 Td
-(5710 // from lapic[TICR] and then issues an interrupt.) 244.637 Tj
-0 -132.907 Td
-(5711 // Lapic[TCCR] is the current counter value.) 222.794 Tj
-0 -142.4 Td
-(5712 // If xv6 cared more about precise timekeeping, the) 253.374 Tj
-0 -151.894 Td
-(5713 // values of TICR and TCCR would be calibrated using) 257.742 Tj
-0 -161.387 Td
-(5714 // an external time source.) 148.529 Tj
-0 -170.88 Td
-(5715 lapic[TDCR] = X1;) 104.844 Tj
-0 -180.374 Td
-(5716 lapic[TICR] = 10000000;) 131.055 Tj
-0 -189.867 Td
-(5717 lapic[TCCR] = 10000000;) 131.055 Tj
-0 -199.361 Td
-(5718 lapic[TIMER] = PERIODIC | \(IRQ_OFFSET + IRQ_TIMER\);) 253.374 Tj
-0 -208.854 Td
-(5719 ) 21.8426 Tj
-0 -218.347 Td
-(5720 // Disable logical interrupt lines.) 183.478 Tj
-0 -227.841 Td
-(5721 lapic[LINT0] = MASKED;) 126.687 Tj
+0 -113.9203 Td
+(5709 // The timer repeatedly counts down at bus frequency) 257.7424 Tj
+0 -123.4137 Td
+(5710 // from lapic[TICR] and then issues an interrupt.) 244.6368 Tj
+0 -132.9071 Td
+(5711 // If xv6 cared more about precise timekeeping,) 235.8998 Tj
+0 -142.4004 Td
+(5712 // TICR would be calibrated using an external time sourc\
+e.) 283.9534 Tj
+0 -151.8938 Td
+(5713 lapicw\(TDCR, X1\);) 104.8443 Tj
+0 -161.3871 Td
+(5714 lapicw\(TIMER, PERIODIC | \(IRQ_OFFSET + IRQ_TIMER\)\);) 253.3738 Tj
+0 -170.8805 Td
+(5715 lapicw\(TICR, 10000000\);) 131.0554 Tj
+0 -180.3739 Td
+(5716 ) 21.8426 Tj
+0 -189.8672 Td
+(5717 // Disable logical interrupt lines.) 183.4776 Tj
+0 -199.3606 Td
+(5718 lapicw\(LINT0, MASKED\);) 126.6869 Tj
+0 -208.8539 Td
+(5719 lapicw\(LINT1, MASKED\);) 126.6869 Tj
+0 -218.3473 Td
+(5720 ) 21.8426 Tj
+0 -227.8407 Td
+(5721 // Disable performance counter overflow interrupts) 249.0053 Tj
0 -237.334 Td
-(5722 lapic[LINT1] = MASKED;) 126.687 Tj
-0 -246.827 Td
-(5723 ) 21.8426 Tj
-0 -256.321 Td
-(5724 // Disable performance counter overflow interrupts) 249.005 Tj
-0 -265.814 Td
-(5725 // on machines that provide that interrupt entry.) 244.637 Tj
-0 -275.307 Td
-(5726 if\(\(\(lapic[VER]>>16\) & 0xFF\) >= 4\)) 179.109 Tj
-0 -284.801 Td
-(5727 lapic[PCINT] = MASKED;) 135.424 Tj
-0 -294.294 Td
+(5722 // on machines that provide that interrupt entry.) 244.6368 Tj
+0 -246.8274 Td
+(5723 if\(\(\(lapic[VER]>>16\) & 0xFF\) >= 4\)) 179.1091 Tj
+0 -256.3207 Td
+(5724 lapicw\(PCINT, MASKED\);) 135.4239 Tj
+0 -265.8141 Td
+(5725 ) 21.8426 Tj
+0 -275.3075 Td
+(5726 // Map error interrupt to IRQ_ERROR.) 187.8461 Tj
+0 -284.8008 Td
+(5727 lapicw\(ERROR, IRQ_OFFSET+IRQ_ERROR\);) 187.8461 Tj
+0 -294.2942 Td
(5728 ) 21.8426 Tj
-0 -303.788 Td
-(5729 // Map error interrupt to IRQ_ERROR.) 187.846 Tj
-0 -313.281 Td
-(5730 lapic[ERROR] = IRQ_OFFSET+IRQ_ERROR;) 187.846 Tj
-0 -322.774 Td
-(5731 ) 21.8426 Tj
-0 -332.268 Td
-(5732 // Clear error status register \(requires back-to-back w\
-rites\).) 301.427 Tj
+0 -303.7875 Td
+(5729 // Clear error status register \(requires back-to-back w\
+rites\).) 301.4275 Tj
+0 -313.2809 Td
+(5730 lapicw\(ESR, 0\);) 96.1073 Tj
+0 -322.7743 Td
+(5731 lapicw\(ESR, 0\);) 96.1073 Tj
+0 -332.2676 Td
+(5732 ) 21.8426 Tj
0 -341.761 Td
-(5733 lapic[ESR] = 0;) 96.1073 Tj
-0 -351.254 Td
-(5734 lapic[ESR] = 0;) 96.1073 Tj
-0 -360.748 Td
+(5733 // Ack any outstanding interrupts.) 179.1091 Tj
+0 -351.2543 Td
+(5734 lapicw\(EOI, 0\);) 96.1073 Tj
+0 -360.7477 Td
(5735 ) 21.8426 Tj
-0 -370.241 Td
-(5736 // Ack any outstanding interrupts.) 179.109 Tj
-0 -379.734 Td
-(5737 lapic[EOI] = 0;) 96.1073 Tj
-0 -389.228 Td
-(5738 ) 21.8426 Tj
-0 -398.721 Td
-(5739 // Send an Init Level De-Assert to synchronise arbitrati\
-on ID's.) 310.165 Tj
-0 -408.214 Td
-(5740 lapic[ICRHI] = 0;) 104.844 Tj
-0 -417.708 Td
-(5741 lapic[ICRLO] = BCAST | INIT | LEVEL;) 187.846 Tj
-0 -427.201 Td
-(5742 while\(lapic[ICRLO] & DELIVS\)) 152.898 Tj
-0 -436.695 Td
-(5743 ;) 43.6851 Tj
-0 -446.188 Td
-(5744 ) 21.8426 Tj
-0 -455.681 Td
-(5745 // Enable interrupts on the APIC \(but not on the proces\
-sor\).) 292.69 Tj
-0 -465.175 Td
-(5746 lapic[TPR] = 0;) 96.1073 Tj
+0 -370.2411 Td
+(5736 // Send an Init Level De-Assert to synchronise arbitrati\
+on ID's.) 310.1645 Tj
+0 -379.7344 Td
+(5737 lapicw\(ICRHI, 0\);) 104.8443 Tj
+0 -389.2278 Td
+(5738 lapicw\(ICRLO, BCAST | INIT | LEVEL\);) 187.8461 Tj
+0 -398.7211 Td
+(5739 while\(lapic[ICRLO] & DELIVS\)) 152.898 Tj
+0 -408.2145 Td
+(5740 ;) 43.6851 Tj
+0 -417.7079 Td
+(5741 ) 21.8426 Tj
+0 -427.2012 Td
+(5742 // Enable interrupts on the APIC \(but not on the proces\
+sor\).) 292.6905 Tj
+0 -436.6946 Td
+(5743 lapicw\(TPR, 0\);) 96.1073 Tj
+0 -446.1879 Td
+(5744 }) 26.2111 Tj
+0 -455.6813 Td
+(5745 ) 21.8426 Tj
+0 -465.1747 Td
+(5746 ) 21.8426 Tj
0 -474.668 Td
-(5747 }) 26.2111 Tj
-0 -484.161 Td
+(5747 ) 21.8426 Tj
+0 -484.1614 Td
(5748 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(5749 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 57) 34.9481 Tj
Q
Q
@@ -19279,10 +19257,10 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/lapic.c Page 3) 166.004 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/lapic.c Page 3) 166.0035 Tj
0 -28.4801 Td
(5750 int) 34.9481 Tj
0 -37.9735 Td
@@ -19290,101 +19268,103 @@ q
0 -47.4668 Td
(5752 {) 26.2111 Tj
0 -56.9602 Td
-(5753 if\(lapic\)) 69.8962 Tj
+(5753 // Cannot call cpu when interrupts are enabled:) 235.8998 Tj
0 -66.4535 Td
-(5754 return lapic[ID]>>24;) 131.055 Tj
+(5754 // result not guaranteed to last long enough to be used!) 275.2164 Tj
0 -75.9469 Td
-(5755 return 0;) 69.8962 Tj
+(5755 // Would prefer to panic but even printing is chancy her\
+e:) 283.9534 Tj
0 -85.4403 Td
-(5756 }) 26.2111 Tj
+(5756 // everything, including cprintf, calls cpu, at least in\
+directly) 310.1645 Tj
0 -94.9336 Td
-(5757 ) 21.8426 Tj
+(5757 // through acquire and release.) 166.0035 Tj
0 -104.427 Td
-(5758 // Acknowledge interrupt.) 131.055 Tj
-0 -113.92 Td
-(5759 void) 39.3166 Tj
-0 -123.414 Td
-(5760 lapic_eoi\(void\)) 87.3703 Tj
-0 -132.907 Td
-(5761 {) 26.2111 Tj
-0 -142.4 Td
-(5762 if\(lapic\)) 69.8962 Tj
-0 -151.894 Td
-(5763 lapic[EOI] = 0;) 104.844 Tj
-0 -161.387 Td
-(5764 }) 26.2111 Tj
-0 -170.88 Td
-(5765 ) 21.8426 Tj
-0 -180.374 Td
-(5766 // Spin for a given number of microseconds.) 209.689 Tj
-0 -189.867 Td
-(5767 // On real hardware would want to tune this dynamically.) 266.479 Tj
-0 -199.361 Td
-(5768 static void) 69.8962 Tj
-0 -208.854 Td
-(5769 microdelay\(int us\)) 100.476 Tj
-0 -218.347 Td
-(5770 {) 26.2111 Tj
-0 -227.841 Td
-(5771 volatile int j = 0;) 113.581 Tj
+(5758 if\(read_eflags\(\)&FL_IF\){) 135.4239 Tj
+0 -113.9203 Td
+(5759 static int n;) 96.1073 Tj
+0 -123.4137 Td
+(5760 if\(n++ == 0\)) 91.7388 Tj
+0 -132.9071 Td
+(5761 cprintf\("cpu called from %x with interrupts enabled\
+\\n",) 288.322 Tj
+0 -142.4004 Td
+(5762 \(\(uint*\)read_ebp\(\)\)[1]\);) 161.635 Tj
+0 -151.8938 Td
+(5763 }) 34.9481 Tj
+0 -161.3871 Td
+(5764 ) 21.8426 Tj
+0 -170.8805 Td
+(5765 if\(lapic\)) 69.8962 Tj
+0 -180.3739 Td
+(5766 return lapic[ID]>>24;) 131.0554 Tj
+0 -189.8672 Td
+(5767 return 0;) 69.8962 Tj
+0 -199.3606 Td
+(5768 }) 26.2111 Tj
+0 -208.8539 Td
+(5769 ) 21.8426 Tj
+0 -218.3473 Td
+(5770 // Acknowledge interrupt.) 131.0554 Tj
+0 -227.8407 Td
+(5771 void) 39.3166 Tj
0 -237.334 Td
-(5772 ) 21.8426 Tj
-0 -246.827 Td
-(5773 while\(us-- > 0\)) 96.1073 Tj
-0 -256.321 Td
-(5774 for\(j=0; j<10000; j++\);) 139.792 Tj
-0 -265.814 Td
-(5775 }) 26.2111 Tj
-0 -275.307 Td
-(5776 ) 21.8426 Tj
-0 -284.801 Td
-(5777 // Start additional processor running bootstrap code at ad\
-dr.) 288.322 Tj
-0 -294.294 Td
-(5778 // See Appendix B of MultiProcessor Specification.) 240.268 Tj
-0 -303.788 Td
-(5779 void) 39.3166 Tj
-0 -313.281 Td
-(5780 lapic_startap\(uchar apicid, uint addr\)) 187.846 Tj
-0 -322.774 Td
-(5781 {) 26.2111 Tj
-0 -332.268 Td
-(5782 int i;) 56.7907 Tj
+(5772 lapic_eoi\(void\)) 87.3703 Tj
+0 -246.8274 Td
+(5773 {) 26.2111 Tj
+0 -256.3207 Td
+(5774 if\(lapic\)) 69.8962 Tj
+0 -265.8141 Td
+(5775 lapicw\(EOI, 0\);) 104.8443 Tj
+0 -275.3075 Td
+(5776 }) 26.2111 Tj
+0 -284.8008 Td
+(5777 ) 21.8426 Tj
+0 -294.2942 Td
+(5778 // Spin for a given number of microseconds.) 209.6887 Tj
+0 -303.7875 Td
+(5779 // On real hardware would want to tune this dynamically.) 266.4794 Tj
+0 -313.2809 Td
+(5780 static void) 69.8962 Tj
+0 -322.7743 Td
+(5781 microdelay\(int us\)) 100.4758 Tj
+0 -332.2676 Td
+(5782 {) 26.2111 Tj
0 -341.761 Td
-(5783 volatile int j = 0;) 113.581 Tj
-0 -351.254 Td
+(5783 volatile int j = 0;) 113.5814 Tj
+0 -351.2543 Td
(5784 ) 21.8426 Tj
-0 -360.748 Td
-(5785 // Send INIT interrupt to reset other CPU.) 214.057 Tj
-0 -370.241 Td
-(5786 lapic[ICRHI] = apicid<<24;) 144.161 Tj
-0 -379.734 Td
-(5787 lapic[ICRLO] = INIT | LEVEL;) 152.898 Tj
-0 -389.228 Td
-(5788 microdelay\(10\);) 96.1073 Tj
-0 -398.721 Td
+0 -360.7477 Td
+(5785 while\(us-- > 0\)) 96.1073 Tj
+0 -370.2411 Td
+(5786 for\(j=0; j<10000; j++\);) 139.7925 Tj
+0 -379.7344 Td
+(5787 }) 26.2111 Tj
+0 -389.2278 Td
+(5788 ) 21.8426 Tj
+0 -398.7211 Td
(5789 ) 21.8426 Tj
-0 -408.214 Td
-(5790 // Send startup IPI \(twice!\) to enter bootstrap code.) 262.111 Tj
-0 -417.708 Td
-(5791 for\(i = 0; i < 2; i++\){) 131.055 Tj
-0 -427.201 Td
-(5792 lapic[ICRHI] = apicid<<24;) 152.898 Tj
-0 -436.695 Td
-(5793 lapic[ICRLO] = STARTUP | \(addr>>12\);) 196.583 Tj
-0 -446.188 Td
-(5794 for\(j=0; j<10000; j++\); // 200us) 183.478 Tj
-0 -455.681 Td
-(5795 }) 34.9481 Tj
-0 -465.175 Td
-(5796 }) 26.2111 Tj
+0 -408.2145 Td
+(5790 ) 21.8426 Tj
+0 -417.7079 Td
+(5791 ) 21.8426 Tj
+0 -427.2012 Td
+(5792 ) 21.8426 Tj
+0 -436.6946 Td
+(5793 ) 21.8426 Tj
+0 -446.1879 Td
+(5794 ) 21.8426 Tj
+0 -455.6813 Td
+(5795 ) 21.8426 Tj
+0 -465.1747 Td
+(5796 ) 21.8426 Tj
0 -474.668 Td
(5797 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(5798 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(5799 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 57) 34.9481 Tj
Q
Q
@@ -19413,8 +19393,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -19429,120 +19408,121 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/ioapic.c Page 1) 170.372 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/lapic.c Page 4) 166.0035 Tj
0 -28.4801 Td
-(5800 // The I/O APIC manages hardware interrupts for an SMP sys\
-tem.) 292.69 Tj
+(5800 #define IO_RTC 0x70) 109.2129 Tj
0 -37.9735 Td
-(5801 // http://www.intel.com/design/chipsets/datashts/29056601.\
-pdf) 288.322 Tj
+(5801 ) 21.8426 Tj
0 -47.4668 Td
-(5802 // See also picirq.c.) 113.581 Tj
+(5802 // Start additional processor running bootstrap code at ad\
+dr.) 288.322 Tj
0 -56.9602 Td
-(5803 ) 21.8426 Tj
+(5803 // See Appendix B of MultiProcessor Specification.) 240.2683 Tj
0 -66.4535 Td
-(5804 #include "types.h") 100.476 Tj
+(5804 void) 39.3166 Tj
0 -75.9469 Td
-(5805 #include "defs.h") 96.1073 Tj
+(5805 lapic_startap\(uchar apicid, uint addr\)) 187.8461 Tj
0 -85.4403 Td
-(5806 #include "traps.h") 100.476 Tj
+(5806 {) 26.2111 Tj
0 -94.9336 Td
-(5807 ) 21.8426 Tj
+(5807 int i;) 56.7907 Tj
0 -104.427 Td
-(5808 #define IOAPIC 0xFEC00000 // Default physical address o\
-f IO APIC) 314.533 Tj
-0 -113.92 Td
+(5808 ushort *wrv;) 83.0018 Tj
+0 -113.9203 Td
(5809 ) 21.8426 Tj
-0 -123.414 Td
-(5810 #define REG_ID 0x00 // Register index: ID) 222.794 Tj
-0 -132.907 Td
-(5811 #define REG_VER 0x01 // Register index: version) 244.637 Tj
-0 -142.4 Td
-(5812 #define REG_TABLE 0x10 // Redirection table base) 240.268 Tj
-0 -151.894 Td
-(5813 ) 21.8426 Tj
-0 -161.387 Td
-(5814 // The redirection table starts at REG_TABLE and uses) 253.374 Tj
-0 -170.88 Td
-(5815 // two registers to configure each interrupt.) 218.426 Tj
-0 -180.374 Td
-(5816 // The first \(low\) register in a pair contains configura\
-tion bits.) 310.165 Tj
-0 -189.867 Td
-(5817 // The second \(high\) register contains a bitmask telling\
- which) 292.69 Tj
-0 -199.361 Td
-(5818 // CPUs can serve that interrupt.) 166.004 Tj
-0 -208.854 Td
-(5819 #define INT_DISABLED 0x00100000 // Interrupt disabled) 266.479 Tj
-0 -218.347 Td
-(5820 #define INT_LEVEL 0x00008000 // Level-triggered \(vs\
- edge-\)) 301.427 Tj
-0 -227.841 Td
-(5821 #define INT_ACTIVELOW 0x00002000 // Active low \(vs high\
-\)) 275.216 Tj
+0 -123.4137 Td
+(5810 // "The BSP must initialize CMOS shutdown code to 0AH) 262.1109 Tj
+0 -132.9071 Td
+(5811 // and the warm reset vector \(DWORD based at 40:67\) to\
+ point at) 305.796 Tj
+0 -142.4004 Td
+(5812 // the AP startup code prior to the [universal startup a\
+lgorithm].") 323.2701 Tj
+0 -151.8938 Td
+(5813 outb\(IO_RTC, 0xF\); // offset 0xF is shutdown code) 249.0053 Tj
+0 -161.3871 Td
+(5814 outb\(IO_RTC+1, 0x0A\);) 122.3184 Tj
+0 -170.8805 Td
+(5815 wrv = \(ushort*\)\(0x40<<4 | 0x67\); // Warm reset vect\
+or) 266.4794 Tj
+0 -180.3739 Td
+(5816 wrv[0] = 0;) 78.6333 Tj
+0 -189.8672 Td
+(5817 wrv[1] = addr >> 4;) 113.5814 Tj
+0 -199.3606 Td
+(5818 ) 21.8426 Tj
+0 -208.8539 Td
+(5819 // "Universal startup algorithm.") 174.7406 Tj
+0 -218.3473 Td
+(5820 // Send INIT \(level-triggered\) interrupt to reset othe\
+r CPU.) 292.6905 Tj
+0 -227.8407 Td
+(5821 lapicw\(ICRHI, apicid<<24\);) 144.161 Tj
0 -237.334 Td
-(5822 #define INT_LOGICAL 0x00000800 // Destination is CPU i\
-d \(vs APIC ID\)) 336.376 Tj
-0 -246.827 Td
-(5823 ) 21.8426 Tj
-0 -256.321 Td
-(5824 volatile struct ioapic *ioapic;) 157.267 Tj
-0 -265.814 Td
-(5825 ) 21.8426 Tj
-0 -275.307 Td
-(5826 // IO APIC MMIO structure: write reg, then read or write d\
-ata.) 292.69 Tj
-0 -284.801 Td
-(5827 struct ioapic {) 87.3703 Tj
-0 -294.294 Td
-(5828 uint reg;) 69.8962 Tj
-0 -303.788 Td
-(5829 uint pad[3];) 83.0018 Tj
-0 -313.281 Td
-(5830 uint data;) 74.2647 Tj
-0 -322.774 Td
-(5831 };) 30.5796 Tj
-0 -332.268 Td
-(5832 ) 21.8426 Tj
+(5822 lapicw\(ICRLO, INIT | LEVEL | ASSERT\);) 192.2146 Tj
+0 -246.8274 Td
+(5823 microdelay\(200\);) 100.4758 Tj
+0 -256.3207 Td
+(5824 lapicw\(ICRLO, INIT | LEVEL\);) 152.898 Tj
+0 -265.8141 Td
+(5825 microdelay\(100\);) 100.4758 Tj
+-500.868 TJm
+(// should be 10ms, but too slow in Bochs!) 179.1091 Tj
+0 -275.3075 Td
+(5826 ) 21.8426 Tj
+0 -284.8008 Td
+(5827 // Send startup IPI \(twice!\) to enter bootstrap code.) 262.1109 Tj
+0 -294.2942 Td
+(5828 // Regular hardware is supposed to only accept a STARTUP) 275.2164 Tj
+0 -303.7875 Td
+(5829 // when it is in the halted state due to an INIT. So th\
+e second) 310.1645 Tj
+0 -313.2809 Td
+(5830 // should be ignored, but it is part of the official Int\
+el algorithm.) 332.0071 Tj
+0 -322.7743 Td
+(5831 // Bochs complains about the second one. Too bad for Bo\
+chs.) 292.6905 Tj
+0 -332.2676 Td
+(5832 for\(i = 0; i < 2; i++\){) 131.0554 Tj
0 -341.761 Td
-(5833 static uint) 69.8962 Tj
-0 -351.254 Td
-(5834 ioapic_read\(int reg\)) 109.213 Tj
-0 -360.748 Td
-(5835 {) 26.2111 Tj
-0 -370.241 Td
-(5836 ioapic->reg = reg;) 109.213 Tj
-0 -379.734 Td
-(5837 return ioapic->data;) 117.95 Tj
-0 -389.228 Td
-(5838 }) 26.2111 Tj
-0 -398.721 Td
+(5833 lapicw\(ICRHI, apicid<<24\);) 152.898 Tj
+0 -351.2543 Td
+(5834 lapicw\(ICRLO, STARTUP | \(addr>>12\)\);) 196.5831 Tj
+0 -360.7477 Td
+(5835 microdelay\(200\);) 109.2129 Tj
+0 -370.2411 Td
+(5836 }) 34.9481 Tj
+0 -379.7344 Td
+(5837 }) 26.2111 Tj
+0 -389.2278 Td
+(5838 ) 21.8426 Tj
+0 -398.7211 Td
(5839 ) 21.8426 Tj
-0 -408.214 Td
-(5840 static void) 69.8962 Tj
-0 -417.708 Td
-(5841 ioapic_write\(int reg, uint data\)) 161.635 Tj
-0 -427.201 Td
-(5842 {) 26.2111 Tj
-0 -436.695 Td
-(5843 ioapic->reg = reg;) 109.213 Tj
-0 -446.188 Td
-(5844 ioapic->data = data;) 117.95 Tj
-0 -455.681 Td
-(5845 }) 26.2111 Tj
-0 -465.175 Td
+0 -408.2145 Td
+(5840 ) 21.8426 Tj
+0 -417.7079 Td
+(5841 ) 21.8426 Tj
+0 -427.2012 Td
+(5842 ) 21.8426 Tj
+0 -436.6946 Td
+(5843 ) 21.8426 Tj
+0 -446.1879 Td
+(5844 ) 21.8426 Tj
+0 -455.6813 Td
+(5845 ) 21.8426 Tj
+0 -465.1747 Td
(5846 ) 21.8426 Tj
0 -474.668 Td
(5847 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(5848 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(5849 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 58) 34.9481 Tj
Q
Q
@@ -19557,114 +19537,120 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/ioapic.c Page 2) 170.372 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/ioapic.c Page 1) 170.3721 Tj
0 -28.4801 Td
-(5850 void) 39.3166 Tj
+(5850 // The I/O APIC manages hardware interrupts for an SMP sys\
+tem.) 292.6905 Tj
0 -37.9735 Td
-(5851 ioapic_init\(void\)) 96.1073 Tj
+(5851 // http://www.intel.com/design/chipsets/datashts/29056601.\
+pdf) 288.322 Tj
0 -47.4668 Td
-(5852 {) 26.2111 Tj
+(5852 // See also picirq.c.) 113.5814 Tj
0 -56.9602 Td
-(5853 int i, id, maxintr;) 113.581 Tj
+(5853 ) 21.8426 Tj
0 -66.4535 Td
-(5854 ) 21.8426 Tj
+(5854 #include "types.h") 100.4758 Tj
0 -75.9469 Td
-(5855 if\(!ismp\)) 69.8962 Tj
+(5855 #include "defs.h") 96.1073 Tj
0 -85.4403 Td
-(5856 return;) 69.8962 Tj
+(5856 #include "traps.h") 100.4758 Tj
0 -94.9336 Td
(5857 ) 21.8426 Tj
0 -104.427 Td
-(5858 ioapic = \(volatile struct ioapic*\)IOAPIC;) 209.689 Tj
-0 -113.92 Td
-(5859 maxintr = \(ioapic_read\(REG_VER\) >> 16\) & 0xFF;) 231.531 Tj
-0 -123.414 Td
-(5860 id = ioapic_read\(REG_ID\) >> 24;) 166.004 Tj
-0 -132.907 Td
-(5861 if\(id != ioapic_id\)) 113.581 Tj
-0 -142.4 Td
-(5862 cprintf\("ioapic_init: id isn't equal to ioapic_id; no\
-t a MP\\n"\);) 318.902 Tj
-0 -151.894 Td
+(5858 #define IOAPIC 0xFEC00000 // Default physical address o\
+f IO APIC) 314.533 Tj
+0 -113.9203 Td
+(5859 ) 21.8426 Tj
+0 -123.4137 Td
+(5860 #define REG_ID 0x00 // Register index: ID) 222.7942 Tj
+0 -132.9071 Td
+(5861 #define REG_VER 0x01 // Register index: version) 244.6368 Tj
+0 -142.4004 Td
+(5862 #define REG_TABLE 0x10 // Redirection table base) 240.2683 Tj
+0 -151.8938 Td
(5863 ) 21.8426 Tj
-0 -161.387 Td
-(5864 // Mark all interrupts edge-triggered, active high, disa\
-bled,) 297.059 Tj
-0 -170.88 Td
-(5865 // and not routed to any CPUs.) 161.635 Tj
-0 -180.374 Td
-(5866 for\(i = 0; i <= maxintr; i++\){) 161.635 Tj
-0 -189.867 Td
-(5867 ioapic_write\(REG_TABLE+2*i, INT_DISABLED | \(IRQ_OFFS\
-ET + i\)\);) 305.796 Tj
-0 -199.361 Td
-(5868 ioapic_write\(REG_TABLE+2*i+1, 0\);) 183.478 Tj
-0 -208.854 Td
-(5869 }) 34.9481 Tj
-0 -218.347 Td
-(5870 }) 26.2111 Tj
-0 -227.841 Td
-(5871 ) 21.8426 Tj
+0 -161.3871 Td
+(5864 // The redirection table starts at REG_TABLE and uses) 253.3738 Tj
+0 -170.8805 Td
+(5865 // two registers to configure each interrupt.) 218.4257 Tj
+0 -180.3739 Td
+(5866 // The first \(low\) register in a pair contains configura\
+tion bits.) 310.1645 Tj
+0 -189.8672 Td
+(5867 // The second \(high\) register contains a bitmask telling\
+ which) 292.6905 Tj
+0 -199.3606 Td
+(5868 // CPUs can serve that interrupt.) 166.0035 Tj
+0 -208.8539 Td
+(5869 #define INT_DISABLED 0x00010000 // Interrupt disabled) 266.4794 Tj
+0 -218.3473 Td
+(5870 #define INT_LEVEL 0x00008000 // Level-triggered \(vs\
+ edge-\)) 301.4275 Tj
+0 -227.8407 Td
+(5871 #define INT_ACTIVELOW 0x00002000 // Active low \(vs high\
+\)) 275.2164 Tj
0 -237.334 Td
-(5872 void) 39.3166 Tj
-0 -246.827 Td
-(5873 ioapic_enable\(int irq, int cpunum\)) 170.372 Tj
-0 -256.321 Td
-(5874 {) 26.2111 Tj
-0 -265.814 Td
-(5875 if\(!ismp\)) 69.8962 Tj
-0 -275.307 Td
-(5876 return;) 69.8962 Tj
-0 -284.801 Td
-(5877 ) 21.8426 Tj
-0 -294.294 Td
-(5878 // Mark interrupt edge-triggered, active high,) 231.531 Tj
-0 -303.788 Td
-(5879 // enabled, and routed to the given cpunum,) 218.426 Tj
-0 -313.281 Td
-(5880 // which happens to be that cpu's APIC ID.) 214.057 Tj
-0 -322.774 Td
-(5881 ioapic_write\(REG_TABLE+2*irq, IRQ_OFFSET + irq\);) 240.268 Tj
-0 -332.268 Td
-(5882 ioapic_write\(REG_TABLE+2*irq+1, cpunum << 24\);) 231.531 Tj
+(5872 #define INT_LOGICAL 0x00000800 // Destination is CPU i\
+d \(vs APIC ID\)) 336.3756 Tj
+0 -246.8274 Td
+(5873 ) 21.8426 Tj
+0 -256.3207 Td
+(5874 volatile struct ioapic *ioapic;) 157.2665 Tj
+0 -265.8141 Td
+(5875 ) 21.8426 Tj
+0 -275.3075 Td
+(5876 // IO APIC MMIO structure: write reg, then read or write d\
+ata.) 292.6905 Tj
+0 -284.8008 Td
+(5877 struct ioapic {) 87.3703 Tj
+0 -294.2942 Td
+(5878 uint reg;) 69.8962 Tj
+0 -303.7875 Td
+(5879 uint pad[3];) 83.0018 Tj
+0 -313.2809 Td
+(5880 uint data;) 74.2647 Tj
+0 -322.7743 Td
+(5881 };) 30.5796 Tj
+0 -332.2676 Td
+(5882 ) 21.8426 Tj
0 -341.761 Td
-(5883 }) 26.2111 Tj
-0 -351.254 Td
-(5884 ) 21.8426 Tj
-0 -360.748 Td
-(5885 ) 21.8426 Tj
-0 -370.241 Td
-(5886 ) 21.8426 Tj
-0 -379.734 Td
-(5887 ) 21.8426 Tj
-0 -389.228 Td
-(5888 ) 21.8426 Tj
-0 -398.721 Td
+(5883 static uint) 69.8962 Tj
+0 -351.2543 Td
+(5884 ioapic_read\(int reg\)) 109.2129 Tj
+0 -360.7477 Td
+(5885 {) 26.2111 Tj
+0 -370.2411 Td
+(5886 ioapic->reg = reg;) 109.2129 Tj
+0 -379.7344 Td
+(5887 return ioapic->data;) 117.9499 Tj
+0 -389.2278 Td
+(5888 }) 26.2111 Tj
+0 -398.7211 Td
(5889 ) 21.8426 Tj
-0 -408.214 Td
-(5890 ) 21.8426 Tj
-0 -417.708 Td
-(5891 ) 21.8426 Tj
-0 -427.201 Td
-(5892 ) 21.8426 Tj
-0 -436.695 Td
-(5893 ) 21.8426 Tj
-0 -446.188 Td
-(5894 ) 21.8426 Tj
-0 -455.681 Td
-(5895 ) 21.8426 Tj
-0 -465.175 Td
+0 -408.2145 Td
+(5890 static void) 69.8962 Tj
+0 -417.7079 Td
+(5891 ioapic_write\(int reg, uint data\)) 161.635 Tj
+0 -427.2012 Td
+(5892 {) 26.2111 Tj
+0 -436.6946 Td
+(5893 ioapic->reg = reg;) 109.2129 Tj
+0 -446.1879 Td
+(5894 ioapic->data = data;) 117.9499 Tj
+0 -455.6813 Td
+(5895 }) 26.2111 Tj
+0 -465.1747 Td
(5896 ) 21.8426 Tj
0 -474.668 Td
(5897 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(5898 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(5899 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 58) 34.9481 Tj
Q
Q
@@ -19693,8 +19679,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -19709,114 +19694,114 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/picirq.c Page 1) 170.372 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/ioapic.c Page 2) 170.3721 Tj
0 -28.4801 Td
-(5900 // Intel 8259A programmable interrupt controllers.) 240.268 Tj
+(5900 void) 39.3166 Tj
0 -37.9735 Td
-(5901 ) 21.8426 Tj
+(5901 ioapic_init\(void\)) 96.1073 Tj
0 -47.4668 Td
-(5902 #include "types.h") 100.476 Tj
+(5902 {) 26.2111 Tj
0 -56.9602 Td
-(5903 #include "x86.h") 91.7388 Tj
+(5903 int i, id, maxintr;) 113.5814 Tj
0 -66.4535 Td
-(5904 #include "traps.h") 100.476 Tj
+(5904 ) 21.8426 Tj
0 -75.9469 Td
-(5905 ) 21.8426 Tj
+(5905 if\(!ismp\)) 69.8962 Tj
0 -85.4403 Td
-(5906 // I/O Addresses of the two programmable interrupt control\
-lers) 292.69 Tj
+(5906 return;) 69.8962 Tj
0 -94.9336 Td
-(5907 #define IO_PIC1 0x20 // Master \(IRQs 0-7\)) 249.005 Tj
+(5907 ) 21.8426 Tj
0 -104.427 Td
-(5908 #define IO_PIC2 0xA0 // Slave \(IRQs 8-15\)) 249.005 Tj
-0 -113.92 Td
-(5909 ) 21.8426 Tj
-0 -123.414 Td
-(5910 #define IRQ_SLAVE 2 // IRQ at which slave conn\
-ects to master) 336.376 Tj
-0 -132.907 Td
-(5911 ) 21.8426 Tj
-0 -142.4 Td
-(5912 // Current IRQ mask.) 109.213 Tj
-0 -151.894 Td
-(5913 // Initial IRQ mask has interrupt 2 enabled \(for slave 82\
-59A\).) 292.69 Tj
-0 -161.387 Td
-(5914 static ushort irqmask = 0xFFFF & ~\(1<<IRQ_SLAVE\);) 235.9 Tj
-0 -170.88 Td
-(5915 ) 21.8426 Tj
-0 -180.374 Td
-(5916 static void) 69.8962 Tj
-0 -189.867 Td
-(5917 pic_setmask\(ushort mask\)) 126.687 Tj
-0 -199.361 Td
-(5918 {) 26.2111 Tj
-0 -208.854 Td
-(5919 irqmask = mask;) 96.1073 Tj
-0 -218.347 Td
-(5920 outb\(IO_PIC1+1, mask\);) 126.687 Tj
-0 -227.841 Td
-(5921 outb\(IO_PIC2+1, mask >> 8\);) 148.529 Tj
+(5908 ioapic = \(volatile struct ioapic*\)IOAPIC;) 209.6887 Tj
+0 -113.9203 Td
+(5909 maxintr = \(ioapic_read\(REG_VER\) >> 16\) & 0xFF;) 231.5313 Tj
+0 -123.4137 Td
+(5910 id = ioapic_read\(REG_ID\) >> 24;) 166.0035 Tj
+0 -132.9071 Td
+(5911 if\(id != ioapic_id\)) 113.5814 Tj
+0 -142.4004 Td
+(5912 cprintf\("ioapic_init: id isn't equal to ioapic_id; no\
+t a MP\\n"\);) 318.9016 Tj
+0 -151.8938 Td
+(5913 ) 21.8426 Tj
+0 -161.3871 Td
+(5914 // Mark all interrupts edge-triggered, active high, disa\
+bled,) 297.059 Tj
+0 -170.8805 Td
+(5915 // and not routed to any CPUs.) 161.635 Tj
+0 -180.3739 Td
+(5916 for\(i = 0; i <= maxintr; i++\){) 161.635 Tj
+0 -189.8672 Td
+(5917 ioapic_write\(REG_TABLE+2*i, INT_DISABLED | \(IRQ_OFFS\
+ET + i\)\);) 305.796 Tj
+0 -199.3606 Td
+(5918 ioapic_write\(REG_TABLE+2*i+1, 0\);) 183.4776 Tj
+0 -208.8539 Td
+(5919 }) 34.9481 Tj
+0 -218.3473 Td
+(5920 }) 26.2111 Tj
+0 -227.8407 Td
+(5921 ) 21.8426 Tj
0 -237.334 Td
-(5922 }) 26.2111 Tj
-0 -246.827 Td
-(5923 ) 21.8426 Tj
-0 -256.321 Td
-(5924 void) 39.3166 Tj
-0 -265.814 Td
-(5925 pic_enable\(int irq\)) 104.844 Tj
-0 -275.307 Td
-(5926 {) 26.2111 Tj
-0 -284.801 Td
-(5927 pic_setmask\(irqmask & ~\(1<<irq\)\);) 174.741 Tj
-0 -294.294 Td
-(5928 }) 26.2111 Tj
-0 -303.788 Td
-(5929 ) 21.8426 Tj
-0 -313.281 Td
-(5930 // Initialize the 8259A interrupt controllers.) 222.794 Tj
-0 -322.774 Td
-(5931 void) 39.3166 Tj
-0 -332.268 Td
-(5932 pic_init\(void\)) 83.0018 Tj
+(5922 void) 39.3166 Tj
+0 -246.8274 Td
+(5923 ioapic_enable\(int irq, int cpunum\)) 170.3721 Tj
+0 -256.3207 Td
+(5924 {) 26.2111 Tj
+0 -265.8141 Td
+(5925 if\(!ismp\)) 69.8962 Tj
+0 -275.3075 Td
+(5926 return;) 69.8962 Tj
+0 -284.8008 Td
+(5927 ) 21.8426 Tj
+0 -294.2942 Td
+(5928 // Mark interrupt edge-triggered, active high,) 231.5313 Tj
+0 -303.7875 Td
+(5929 // enabled, and routed to the given cpunum,) 218.4257 Tj
+0 -313.2809 Td
+(5930 // which happens to be that cpu's APIC ID.) 214.0572 Tj
+0 -322.7743 Td
+(5931 ioapic_write\(REG_TABLE+2*irq, IRQ_OFFSET + irq\);) 240.2683 Tj
+0 -332.2676 Td
+(5932 ioapic_write\(REG_TABLE+2*irq+1, cpunum << 24\);) 231.5313 Tj
0 -341.761 Td
-(5933 {) 26.2111 Tj
-0 -351.254 Td
-(5934 // mask all interrupts) 126.687 Tj
-0 -360.748 Td
-(5935 outb\(IO_PIC1+1, 0xFF\);) 126.687 Tj
-0 -370.241 Td
-(5936 outb\(IO_PIC2+1, 0xFF\);) 126.687 Tj
-0 -379.734 Td
+(5933 }) 26.2111 Tj
+0 -351.2543 Td
+(5934 ) 21.8426 Tj
+0 -360.7477 Td
+(5935 ) 21.8426 Tj
+0 -370.2411 Td
+(5936 ) 21.8426 Tj
+0 -379.7344 Td
(5937 ) 21.8426 Tj
-0 -389.228 Td
-(5938 // Set up master \(8259A-1\)) 144.161 Tj
-0 -398.721 Td
+0 -389.2278 Td
+(5938 ) 21.8426 Tj
+0 -398.7211 Td
(5939 ) 21.8426 Tj
-0 -408.214 Td
-(5940 // ICW1: 0001g0hi) 109.213 Tj
-0 -417.708 Td
-(5941 // g: 0 = edge triggering, 1 = level triggering) 253.374 Tj
-0 -427.201 Td
-(5942 // h: 0 = cascaded PICs, 1 = master only) 222.794 Tj
-0 -436.695 Td
-(5943 // i: 0 = no ICW4, 1 = ICW4 required) 205.32 Tj
-0 -446.188 Td
-(5944 outb\(IO_PIC1, 0x11\);) 117.95 Tj
-0 -455.681 Td
+0 -408.2145 Td
+(5940 ) 21.8426 Tj
+0 -417.7079 Td
+(5941 ) 21.8426 Tj
+0 -427.2012 Td
+(5942 ) 21.8426 Tj
+0 -436.6946 Td
+(5943 ) 21.8426 Tj
+0 -446.1879 Td
+(5944 ) 21.8426 Tj
+0 -455.6813 Td
(5945 ) 21.8426 Tj
-0 -465.175 Td
-(5946 // ICW2: Vector offset) 131.055 Tj
+0 -465.1747 Td
+(5946 ) 21.8426 Tj
0 -474.668 Td
-(5947 outb\(IO_PIC1+1, IRQ_OFFSET\);) 152.898 Tj
-0 -484.161 Td
+(5947 ) 21.8426 Tj
+0 -484.1614 Td
(5948 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(5949 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 59) 34.9481 Tj
Q
Q
@@ -19831,117 +19816,114 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/picirq.c Page 2) 170.372 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/picirq.c Page 1) 170.3721 Tj
0 -28.4801 Td
-(5950 // ICW3: \(master PIC\) bit mask of IR lines connected \
-to slaves) 305.796 Tj
+(5950 // Intel 8259A programmable interrupt controllers.) 240.2683 Tj
0 -37.9735 Td
-(5951 // \(slave PIC\) 3-bit # of slave's connection to\
- master) 297.059 Tj
+(5951 ) 21.8426 Tj
0 -47.4668 Td
-(5952 outb\(IO_PIC1+1, 1<<IRQ_SLAVE\);) 161.635 Tj
+(5952 #include "types.h") 100.4758 Tj
0 -56.9602 Td
-(5953 ) 21.8426 Tj
+(5953 #include "x86.h") 91.7388 Tj
0 -66.4535 Td
-(5954 // ICW4: 000nbmap) 109.213 Tj
+(5954 #include "traps.h") 100.4758 Tj
0 -75.9469 Td
-(5955 // n: 1 = special fully nested mode) 200.952 Tj
+(5955 ) 21.8426 Tj
0 -85.4403 Td
-(5956 // b: 1 = buffered mode) 148.529 Tj
+(5956 // I/O Addresses of the two programmable interrupt control\
+lers) 292.6905 Tj
0 -94.9336 Td
-(5957 // m: 0 = slave PIC, 1 = master PIC) 200.952 Tj
+(5957 #define IO_PIC1 0x20 // Master \(IRQs 0-7\)) 249.0053 Tj
0 -104.427 Td
-(5958 // \(ignored when b is 0, as the master/slave role) 266.479 Tj
-0 -113.92 Td
-(5959 // can be hardwired\).) 144.161 Tj
-0 -123.414 Td
-(5960 // a: 1 = Automatic EOI mode) 170.372 Tj
-0 -132.907 Td
-(5961 // p: 0 = MCS-80/85 mode, 1 = intel x86 mode) 240.268 Tj
-0 -142.4 Td
-(5962 outb\(IO_PIC1+1, 0x3\);) 122.318 Tj
-0 -151.894 Td
-(5963 ) 21.8426 Tj
-0 -161.387 Td
-(5964 // Set up slave \(8259A-2\)) 139.792 Tj
-0 -170.88 Td
-(5965 outb\(IO_PIC2, 0x11\); // ICW1) 227.163 Tj
-0 -180.374 Td
-(5966 outb\(IO_PIC2+1, IRQ_OFFSET + 8\); // ICW2) 227.163 Tj
-0 -189.867 Td
-(5967 outb\(IO_PIC2+1, IRQ_SLAVE\); // ICW3) 227.163 Tj
-0 -199.361 Td
-(5968 // NB Automatic EOI mode doesn't tend to work on the sla\
-ve.) 288.322 Tj
-0 -208.854 Td
-(5969 // Linux source code says it's "to be investigated".) 257.742 Tj
-0 -218.347 Td
-(5970 outb\(IO_PIC2+1, 0x3\); // ICW4) 227.163 Tj
-0 -227.841 Td
-(5971 ) 21.8426 Tj
+(5958 #define IO_PIC2 0xA0 // Slave \(IRQs 8-15\)) 249.0053 Tj
+0 -113.9203 Td
+(5959 ) 21.8426 Tj
+0 -123.4137 Td
+(5960 #define IRQ_SLAVE 2 // IRQ at which slave conn\
+ects to master) 336.3756 Tj
+0 -132.9071 Td
+(5961 ) 21.8426 Tj
+0 -142.4004 Td
+(5962 // Current IRQ mask.) 109.2129 Tj
+0 -151.8938 Td
+(5963 // Initial IRQ mask has interrupt 2 enabled \(for slave 82\
+59A\).) 292.6905 Tj
+0 -161.3871 Td
+(5964 static ushort irqmask = 0xFFFF & ~\(1<<IRQ_SLAVE\);) 235.8998 Tj
+0 -170.8805 Td
+(5965 ) 21.8426 Tj
+0 -180.3739 Td
+(5966 static void) 69.8962 Tj
+0 -189.8672 Td
+(5967 pic_setmask\(ushort mask\)) 126.6869 Tj
+0 -199.3606 Td
+(5968 {) 26.2111 Tj
+0 -208.8539 Td
+(5969 irqmask = mask;) 96.1073 Tj
+0 -218.3473 Td
+(5970 outb\(IO_PIC1+1, mask\);) 126.6869 Tj
+0 -227.8407 Td
+(5971 outb\(IO_PIC2+1, mask >> 8\);) 148.5295 Tj
0 -237.334 Td
-(5972 // OCW3: 0ef01prs) 109.213 Tj
-0 -246.827 Td
-(5973 // ef: 0x = NOP, 10 = clear specific mask, 11 = set s\
-pecific mask) 327.639 Tj
-0 -256.321 Td
-(5974 // p: 0 = no polling, 1 = polling mode) 214.057 Tj
-0 -265.814 Td
-(5975 // rs: 0x = NOP, 10 = read IRR, 11 = read ISR) 240.268 Tj
-0 -275.307 Td
-(5976 outb\(IO_PIC1, 0x68\); // clear specific mas\
-k) 270.848 Tj
-0 -284.801 Td
-(5977 outb\(IO_PIC1, 0x0a\); // read IRR by defaul\
-t) 270.848 Tj
-0 -294.294 Td
-(5978 ) 21.8426 Tj
-0 -303.788 Td
-(5979 outb\(IO_PIC2, 0x68\); // OCW3) 205.32 Tj
-0 -313.281 Td
-(5980 outb\(IO_PIC2, 0x0a\); // OCW3) 205.32 Tj
-0 -322.774 Td
-(5981 ) 21.8426 Tj
-0 -332.268 Td
-(5982 if\(irqmask != 0xFFFF\)) 122.318 Tj
+(5972 }) 26.2111 Tj
+0 -246.8274 Td
+(5973 ) 21.8426 Tj
+0 -256.3207 Td
+(5974 void) 39.3166 Tj
+0 -265.8141 Td
+(5975 pic_enable\(int irq\)) 104.8443 Tj
+0 -275.3075 Td
+(5976 {) 26.2111 Tj
+0 -284.8008 Td
+(5977 pic_setmask\(irqmask & ~\(1<<irq\)\);) 174.7406 Tj
+0 -294.2942 Td
+(5978 }) 26.2111 Tj
+0 -303.7875 Td
+(5979 ) 21.8426 Tj
+0 -313.2809 Td
+(5980 // Initialize the 8259A interrupt controllers.) 222.7942 Tj
+0 -322.7743 Td
+(5981 void) 39.3166 Tj
+0 -332.2676 Td
+(5982 pic_init\(void\)) 83.0018 Tj
0 -341.761 Td
-(5983 pic_setmask\(irqmask\);) 131.055 Tj
-0 -351.254 Td
-(5984 }) 26.2111 Tj
-0 -360.748 Td
-(5985 ) 21.8426 Tj
-0 -370.241 Td
-(5986 ) 21.8426 Tj
-0 -379.734 Td
+(5983 {) 26.2111 Tj
+0 -351.2543 Td
+(5984 // mask all interrupts) 126.6869 Tj
+0 -360.7477 Td
+(5985 outb\(IO_PIC1+1, 0xFF\);) 126.6869 Tj
+0 -370.2411 Td
+(5986 outb\(IO_PIC2+1, 0xFF\);) 126.6869 Tj
+0 -379.7344 Td
(5987 ) 21.8426 Tj
-0 -389.228 Td
-(5988 ) 21.8426 Tj
-0 -398.721 Td
+0 -389.2278 Td
+(5988 // Set up master \(8259A-1\)) 144.161 Tj
+0 -398.7211 Td
(5989 ) 21.8426 Tj
-0 -408.214 Td
-(5990 ) 21.8426 Tj
-0 -417.708 Td
-(5991 ) 21.8426 Tj
-0 -427.201 Td
-(5992 ) 21.8426 Tj
-0 -436.695 Td
-(5993 ) 21.8426 Tj
-0 -446.188 Td
-(5994 ) 21.8426 Tj
-0 -455.681 Td
+0 -408.2145 Td
+(5990 // ICW1: 0001g0hi) 109.2129 Tj
+0 -417.7079 Td
+(5991 // g: 0 = edge triggering, 1 = level triggering) 253.3738 Tj
+0 -427.2012 Td
+(5992 // h: 0 = cascaded PICs, 1 = master only) 222.7942 Tj
+0 -436.6946 Td
+(5993 // i: 0 = no ICW4, 1 = ICW4 required) 205.3202 Tj
+0 -446.1879 Td
+(5994 outb\(IO_PIC1, 0x11\);) 117.9499 Tj
+0 -455.6813 Td
(5995 ) 21.8426 Tj
-0 -465.175 Td
-(5996 ) 21.8426 Tj
+0 -465.1747 Td
+(5996 // ICW2: Vector offset) 131.0554 Tj
0 -474.668 Td
-(5997 ) 21.8426 Tj
-0 -484.161 Td
+(5997 outb\(IO_PIC1+1, IRQ_OFFSET\);) 152.898 Tj
+0 -484.1614 Td
(5998 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(5999 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 59) 34.9481 Tj
Q
Q
@@ -19970,8 +19952,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -19986,112 +19967,117 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/kbd.h Page 1) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/picirq.c Page 2) 170.3721 Tj
0 -28.4801 Td
-(6000 // PC keyboard interface constants) 170.372 Tj
+(6000 // ICW3: \(master PIC\) bit mask of IR lines connected \
+to slaves) 305.796 Tj
0 -37.9735 Td
-(6001 ) 21.8426 Tj
+(6001 // \(slave PIC\) 3-bit # of slave's connection to\
+ master) 297.059 Tj
0 -47.4668 Td
-(6002 #define KBSTATP 0x64 // kbd controller status p\
-ort\(I\)) 301.427 Tj
+(6002 outb\(IO_PIC1+1, 1<<IRQ_SLAVE\);) 161.635 Tj
0 -56.9602 Td
-(6003 #define KBS_DIB 0x01 // kbd data in buffer) 253.374 Tj
+(6003 ) 21.8426 Tj
0 -66.4535 Td
-(6004 #define KBDATAP 0x60 // kbd data port\(I\)) 244.637 Tj
+(6004 // ICW4: 000nbmap) 109.2129 Tj
0 -75.9469 Td
-(6005 ) 21.8426 Tj
+(6005 // n: 1 = special fully nested mode) 200.9517 Tj
0 -85.4403 Td
-(6006 #define NO 0) 131.055 Tj
+(6006 // b: 1 = buffered mode) 148.5295 Tj
0 -94.9336 Td
-(6007 ) 21.8426 Tj
+(6007 // m: 0 = slave PIC, 1 = master PIC) 200.9517 Tj
0 -104.427 Td
-(6008 #define SHIFT \(1<<0\)) 152.898 Tj
-0 -113.92 Td
-(6009 #define CTL \(1<<1\)) 152.898 Tj
-0 -123.414 Td
-(6010 #define ALT \(1<<2\)) 152.898 Tj
-0 -132.907 Td
-(6011 ) 21.8426 Tj
-0 -142.4 Td
-(6012 #define CAPSLOCK \(1<<3\)) 152.898 Tj
-0 -151.894 Td
-(6013 #define NUMLOCK \(1<<4\)) 152.898 Tj
-0 -161.387 Td
-(6014 #define SCROLLLOCK \(1<<5\)) 152.898 Tj
-0 -170.88 Td
-(6015 ) 21.8426 Tj
-0 -180.374 Td
-(6016 #define E0ESC \(1<<6\)) 152.898 Tj
-0 -189.867 Td
-(6017 ) 21.8426 Tj
-0 -199.361 Td
-(6018 // Special keycodes) 104.844 Tj
-0 -208.854 Td
-(6019 #define KEY_HOME 0xE0) 144.161 Tj
-0 -218.347 Td
-(6020 #define KEY_END 0xE1) 144.161 Tj
-0 -227.841 Td
-(6021 #define KEY_UP 0xE2) 144.161 Tj
+(6008 // \(ignored when b is 0, as the master/slave role) 266.4794 Tj
+0 -113.9203 Td
+(6009 // can be hardwired\).) 144.161 Tj
+0 -123.4137 Td
+(6010 // a: 1 = Automatic EOI mode) 170.3721 Tj
+0 -132.9071 Td
+(6011 // p: 0 = MCS-80/85 mode, 1 = intel x86 mode) 240.2683 Tj
+0 -142.4004 Td
+(6012 outb\(IO_PIC1+1, 0x3\);) 122.3184 Tj
+0 -151.8938 Td
+(6013 ) 21.8426 Tj
+0 -161.3871 Td
+(6014 // Set up slave \(8259A-2\)) 139.7925 Tj
+0 -170.8805 Td
+(6015 outb\(IO_PIC2, 0x11\); // ICW1) 227.1628 Tj
+0 -180.3739 Td
+(6016 outb\(IO_PIC2+1, IRQ_OFFSET + 8\); // ICW2) 227.1628 Tj
+0 -189.8672 Td
+(6017 outb\(IO_PIC2+1, IRQ_SLAVE\); // ICW3) 227.1628 Tj
+0 -199.3606 Td
+(6018 // NB Automatic EOI mode doesn't tend to work on the sla\
+ve.) 288.322 Tj
+0 -208.8539 Td
+(6019 // Linux source code says it's "to be investigated".) 257.7424 Tj
+0 -218.3473 Td
+(6020 outb\(IO_PIC2+1, 0x3\); // ICW4) 227.1628 Tj
+0 -227.8407 Td
+(6021 ) 21.8426 Tj
0 -237.334 Td
-(6022 #define KEY_DN 0xE3) 144.161 Tj
-0 -246.827 Td
-(6023 #define KEY_LF 0xE4) 144.161 Tj
-0 -256.321 Td
-(6024 #define KEY_RT 0xE5) 144.161 Tj
-0 -265.814 Td
-(6025 #define KEY_PGUP 0xE6) 144.161 Tj
-0 -275.307 Td
-(6026 #define KEY_PGDN 0xE7) 144.161 Tj
-0 -284.801 Td
-(6027 #define KEY_INS 0xE8) 144.161 Tj
-0 -294.294 Td
-(6028 #define KEY_DEL 0xE9) 144.161 Tj
-0 -303.788 Td
-(6029 ) 21.8426 Tj
-0 -313.281 Td
-(6030 // C\('A'\) == Control-A) 117.95 Tj
-0 -322.774 Td
-(6031 #define C\(x\) \(x - '@'\)) 117.95 Tj
-0 -332.268 Td
-(6032 ) 21.8426 Tj
+(6022 // OCW3: 0ef01prs) 109.2129 Tj
+0 -246.8274 Td
+(6023 // ef: 0x = NOP, 10 = clear specific mask, 11 = set s\
+pecific mask) 327.6386 Tj
+0 -256.3207 Td
+(6024 // p: 0 = no polling, 1 = polling mode) 214.0572 Tj
+0 -265.8141 Td
+(6025 // rs: 0x = NOP, 10 = read IRR, 11 = read ISR) 240.2683 Tj
+0 -275.3075 Td
+(6026 outb\(IO_PIC1, 0x68\); // clear specific mas\
+k) 270.8479 Tj
+0 -284.8008 Td
+(6027 outb\(IO_PIC1, 0x0a\); // read IRR by defaul\
+t) 270.8479 Tj
+0 -294.2942 Td
+(6028 ) 21.8426 Tj
+0 -303.7875 Td
+(6029 outb\(IO_PIC2, 0x68\); // OCW3) 205.3202 Tj
+0 -313.2809 Td
+(6030 outb\(IO_PIC2, 0x0a\); // OCW3) 205.3202 Tj
+0 -322.7743 Td
+(6031 ) 21.8426 Tj
+0 -332.2676 Td
+(6032 if\(irqmask != 0xFFFF\)) 122.3184 Tj
0 -341.761 Td
-(6033 static uchar shiftcode[256] =) 148.529 Tj
-0 -351.254 Td
-(6034 {) 26.2111 Tj
-0 -360.748 Td
-(6035 [0x1D] CTL,) 78.6333 Tj
-0 -370.241 Td
-(6036 [0x2A] SHIFT,) 87.3703 Tj
-0 -379.734 Td
-(6037 [0x36] SHIFT,) 87.3703 Tj
-0 -389.228 Td
-(6038 [0x38] ALT,) 78.6333 Tj
-0 -398.721 Td
-(6039 [0x9D] CTL,) 78.6333 Tj
-0 -408.214 Td
-(6040 [0xB8] ALT) 74.2647 Tj
-0 -417.708 Td
-(6041 };) 30.5796 Tj
-0 -427.201 Td
+(6033 pic_setmask\(irqmask\);) 131.0554 Tj
+0 -351.2543 Td
+(6034 }) 26.2111 Tj
+0 -360.7477 Td
+(6035 ) 21.8426 Tj
+0 -370.2411 Td
+(6036 ) 21.8426 Tj
+0 -379.7344 Td
+(6037 ) 21.8426 Tj
+0 -389.2278 Td
+(6038 ) 21.8426 Tj
+0 -398.7211 Td
+(6039 ) 21.8426 Tj
+0 -408.2145 Td
+(6040 ) 21.8426 Tj
+0 -417.7079 Td
+(6041 ) 21.8426 Tj
+0 -427.2012 Td
(6042 ) 21.8426 Tj
-0 -436.695 Td
-(6043 static uchar togglecode[256] =) 152.898 Tj
-0 -446.188 Td
-(6044 {) 26.2111 Tj
-0 -455.681 Td
-(6045 [0x3A] CAPSLOCK,) 100.476 Tj
-0 -465.175 Td
-(6046 [0x45] NUMLOCK,) 96.1073 Tj
+0 -436.6946 Td
+(6043 ) 21.8426 Tj
+0 -446.1879 Td
+(6044 ) 21.8426 Tj
+0 -455.6813 Td
+(6045 ) 21.8426 Tj
+0 -465.1747 Td
+(6046 ) 21.8426 Tj
0 -474.668 Td
-(6047 [0x46] SCROLLLOCK) 104.844 Tj
-0 -484.161 Td
-(6048 };) 30.5796 Tj
-0 -493.655 Td
+(6047 ) 21.8426 Tj
+0 -484.1614 Td
+(6048 ) 21.8426 Tj
+0 -493.6547 Td
(6049 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 60) 34.9481 Tj
Q
Q
@@ -20106,111 +20092,112 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/kbd.h Page 2) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/kbd.h Page 1) 157.2665 Tj
0 -28.4801 Td
-(6050 static uchar normalmap[256] =) 148.529 Tj
+(6050 // PC keyboard interface constants) 170.3721 Tj
0 -37.9735 Td
-(6051 {) 26.2111 Tj
+(6051 ) 21.8426 Tj
0 -47.4668 Td
-(6052 NO, 0x1B, '1', '2', '3', '4', '5', '6', // 0x00) 270.848 Tj
+(6052 #define KBSTATP 0x64 // kbd controller status p\
+ort\(I\)) 301.4275 Tj
0 -56.9602 Td
-(6053 '7', '8', '9', '0', '-', '=', '\\b', '\\t',) 235.9 Tj
+(6053 #define KBS_DIB 0x01 // kbd data in buffer) 253.3738 Tj
0 -66.4535 Td
-(6054 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', // 0x10) 270.848 Tj
+(6054 #define KBDATAP 0x60 // kbd data port\(I\)) 244.6368 Tj
0 -75.9469 Td
-(6055 'o', 'p', '[', ']', '\\n', NO, 'a', 's',) 231.531 Tj
+(6055 ) 21.8426 Tj
0 -85.4403 Td
-(6056 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', // 0x20) 270.848 Tj
+(6056 #define NO 0) 131.0554 Tj
0 -94.9336 Td
-(6057 '\\'', '`', NO, '\\\\', 'z', 'x', 'c', 'v',) 231.531 Tj
+(6057 ) 21.8426 Tj
0 -104.427 Td
-(6058 'b', 'n', 'm', ',', '.', '/', NO, '*', // 0x30) 270.848 Tj
-0 -113.92 Td
-(6059 NO, ' ', NO, NO, NO, NO, NO, NO,) 227.163 Tj
-0 -123.414 Td
-(6060 NO, NO, NO, NO, NO, NO, NO, '7', // 0x40) 270.848 Tj
-0 -132.907 Td
-(6061 '8', '9', '-', '4', '5', '6', '+', '1',) 231.531 Tj
-0 -142.4 Td
-(6062 '2', '3', '0', '.', NO, NO, NO, NO, // 0x50) 270.848 Tj
-0 -151.894 Td
-(6063 [0x9C] '\\n', // KP_Enter) 157.267 Tj
-0 -161.387 Td
-(6064 [0xB5] '/', // KP_Div) 148.529 Tj
-0 -170.88 Td
-(6065 [0xC8] KEY_UP, [0xD0] KEY_DN,) 170.372 Tj
-0 -180.374 Td
-(6066 [0xC9] KEY_PGUP, [0xD1] KEY_PGDN,) 179.109 Tj
-0 -189.867 Td
-(6067 [0xCB] KEY_LF, [0xCD] KEY_RT,) 170.372 Tj
-0 -199.361 Td
-(6068 [0x97] KEY_HOME, [0xCF] KEY_END,) 174.741 Tj
-0 -208.854 Td
-(6069 [0xD2] KEY_INS, [0xD3] KEY_DEL) 170.372 Tj
-0 -218.347 Td
-(6070 };) 30.5796 Tj
-0 -227.841 Td
-(6071 ) 21.8426 Tj
+(6058 #define SHIFT \(1<<0\)) 152.898 Tj
+0 -113.9203 Td
+(6059 #define CTL \(1<<1\)) 152.898 Tj
+0 -123.4137 Td
+(6060 #define ALT \(1<<2\)) 152.898 Tj
+0 -132.9071 Td
+(6061 ) 21.8426 Tj
+0 -142.4004 Td
+(6062 #define CAPSLOCK \(1<<3\)) 152.898 Tj
+0 -151.8938 Td
+(6063 #define NUMLOCK \(1<<4\)) 152.898 Tj
+0 -161.3871 Td
+(6064 #define SCROLLLOCK \(1<<5\)) 152.898 Tj
+0 -170.8805 Td
+(6065 ) 21.8426 Tj
+0 -180.3739 Td
+(6066 #define E0ESC \(1<<6\)) 152.898 Tj
+0 -189.8672 Td
+(6067 ) 21.8426 Tj
+0 -199.3606 Td
+(6068 // Special keycodes) 104.8443 Tj
+0 -208.8539 Td
+(6069 #define KEY_HOME 0xE0) 144.161 Tj
+0 -218.3473 Td
+(6070 #define KEY_END 0xE1) 144.161 Tj
+0 -227.8407 Td
+(6071 #define KEY_UP 0xE2) 144.161 Tj
0 -237.334 Td
-(6072 static uchar shiftmap[256] =) 144.161 Tj
-0 -246.827 Td
-(6073 {) 26.2111 Tj
-0 -256.321 Td
-(6074 NO, 033, '!', '@', '#', '$', '%', '^', // 0x00) 270.848 Tj
-0 -265.814 Td
-(6075 '&', '*', '\(', '\)', '_', '+', '\\b', '\\t',) 235.9 Tj
-0 -275.307 Td
-(6076 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', // 0x10) 270.848 Tj
-0 -284.801 Td
-(6077 'O', 'P', '{', '}', '\\n', NO, 'A', 'S',) 231.531 Tj
-0 -294.294 Td
-(6078 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', // 0x20) 270.848 Tj
-0 -303.788 Td
-(6079 '"', '~', NO, '|', 'Z', 'X', 'C', 'V',) 231.531 Tj
-0 -313.281 Td
-(6080 'B', 'N', 'M', '<', '>', '?', NO, '*', // 0x30) 270.848 Tj
-0 -322.774 Td
-(6081 NO, ' ', NO, NO, NO, NO, NO, NO,) 227.163 Tj
-0 -332.268 Td
-(6082 NO, NO, NO, NO, NO, NO, NO, '7', // 0x40) 270.848 Tj
+(6072 #define KEY_DN 0xE3) 144.161 Tj
+0 -246.8274 Td
+(6073 #define KEY_LF 0xE4) 144.161 Tj
+0 -256.3207 Td
+(6074 #define KEY_RT 0xE5) 144.161 Tj
+0 -265.8141 Td
+(6075 #define KEY_PGUP 0xE6) 144.161 Tj
+0 -275.3075 Td
+(6076 #define KEY_PGDN 0xE7) 144.161 Tj
+0 -284.8008 Td
+(6077 #define KEY_INS 0xE8) 144.161 Tj
+0 -294.2942 Td
+(6078 #define KEY_DEL 0xE9) 144.161 Tj
+0 -303.7875 Td
+(6079 ) 21.8426 Tj
+0 -313.2809 Td
+(6080 // C\('A'\) == Control-A) 117.9499 Tj
+0 -322.7743 Td
+(6081 #define C\(x\) \(x - '@'\)) 117.9499 Tj
+0 -332.2676 Td
+(6082 ) 21.8426 Tj
0 -341.761 Td
-(6083 '8', '9', '-', '4', '5', '6', '+', '1',) 231.531 Tj
-0 -351.254 Td
-(6084 '2', '3', '0', '.', NO, NO, NO, NO, // 0x50) 270.848 Tj
-0 -360.748 Td
-(6085 [0x9C] '\\n', // KP_Enter) 157.267 Tj
-0 -370.241 Td
-(6086 [0xB5] '/', // KP_Div) 148.529 Tj
-0 -379.734 Td
-(6087 [0xC8] KEY_UP, [0xD0] KEY_DN,) 170.372 Tj
-0 -389.228 Td
-(6088 [0xC9] KEY_PGUP, [0xD1] KEY_PGDN,) 179.109 Tj
-0 -398.721 Td
-(6089 [0xCB] KEY_LF, [0xCD] KEY_RT,) 170.372 Tj
-0 -408.214 Td
-(6090 [0x97] KEY_HOME, [0xCF] KEY_END,) 174.741 Tj
-0 -417.708 Td
-(6091 [0xD2] KEY_INS, [0xD3] KEY_DEL) 170.372 Tj
-0 -427.201 Td
-(6092 };) 30.5796 Tj
-0 -436.695 Td
-(6093 ) 21.8426 Tj
-0 -446.188 Td
-(6094 ) 21.8426 Tj
-0 -455.681 Td
-(6095 ) 21.8426 Tj
-0 -465.175 Td
-(6096 ) 21.8426 Tj
+(6083 static uchar shiftcode[256] =) 148.5295 Tj
+0 -351.2543 Td
+(6084 {) 26.2111 Tj
+0 -360.7477 Td
+(6085 [0x1D] CTL,) 78.6333 Tj
+0 -370.2411 Td
+(6086 [0x2A] SHIFT,) 87.3703 Tj
+0 -379.7344 Td
+(6087 [0x36] SHIFT,) 87.3703 Tj
+0 -389.2278 Td
+(6088 [0x38] ALT,) 78.6333 Tj
+0 -398.7211 Td
+(6089 [0x9D] CTL,) 78.6333 Tj
+0 -408.2145 Td
+(6090 [0xB8] ALT) 74.2647 Tj
+0 -417.7079 Td
+(6091 };) 30.5796 Tj
+0 -427.2012 Td
+(6092 ) 21.8426 Tj
+0 -436.6946 Td
+(6093 static uchar togglecode[256] =) 152.898 Tj
+0 -446.1879 Td
+(6094 {) 26.2111 Tj
+0 -455.6813 Td
+(6095 [0x3A] CAPSLOCK,) 100.4758 Tj
+0 -465.1747 Td
+(6096 [0x45] NUMLOCK,) 96.1073 Tj
0 -474.668 Td
-(6097 ) 21.8426 Tj
-0 -484.161 Td
-(6098 ) 21.8426 Tj
-0 -493.655 Td
+(6097 [0x46] SCROLLLOCK) 104.8443 Tj
+0 -484.1614 Td
+(6098 };) 30.5796 Tj
+0 -493.6547 Td
(6099 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 60) 34.9481 Tj
Q
Q
@@ -20239,8 +20226,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -20255,118 +20241,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/kbd.h Page 3) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/kbd.h Page 2) 157.2665 Tj
0 -28.4801 Td
-(6100 static uchar ctlmap[256] =) 135.424 Tj
+(6100 static uchar normalmap[256] =) 148.5295 Tj
0 -37.9735 Td
(6101 {) 26.2111 Tj
0 -47.4668 Td
-(6102 NO, NO, NO, NO, NO, NO, NO\
-, NO,) 318.902 Tj
+(6102 NO, 0x1B, '1', '2', '3', '4', '5', '6', // 0x00) 270.8479 Tj
0 -56.9602 Td
-(6103 NO, NO, NO, NO, NO, NO, NO\
-, NO,) 318.902 Tj
+(6103 '7', '8', '9', '0', '-', '=', '\\b', '\\t',) 235.8998 Tj
0 -66.4535 Td
-(6104 C\('Q'\), C\('W'\), C\('E'\), C\('R'\), C\('T'\), C\
-\('Y'\), C\('U'\), C\('I'\),) 336.376 Tj
+(6104 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', // 0x10) 270.8479 Tj
0 -75.9469 Td
-(6105 C\('O'\), C\('P'\), NO, NO, '\\r', NO, \
- C\('A'\), C\('S'\),) 336.376 Tj
+(6105 'o', 'p', '[', ']', '\\n', NO, 'a', 's',) 231.5313 Tj
0 -85.4403 Td
-(6106 C\('D'\), C\('F'\), C\('G'\), C\('H'\), C\('J'\), C\
-\('K'\), C\('L'\), NO,) 318.902 Tj
+(6106 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', // 0x20) 270.8479 Tj
0 -94.9336 Td
-(6107 NO, NO, NO, C\('\\\\'\), C\('Z'\), C\('X\
-'\), C\('C'\), C\('V'\),) 336.376 Tj
+(6107 '\\'', '`', NO, '\\\\', 'z', 'x', 'c', 'v',) 231.5313 Tj
0 -104.427 Td
-(6108 C\('B'\), C\('N'\), C\('M'\), NO, NO, C\('/\
-'\), NO, NO,) 318.902 Tj
-0 -113.92 Td
-(6109 [0x9C] '\\r', // KP_Enter) 157.267 Tj
-0 -123.414 Td
-(6110 [0xB5] C\('/'\), // KP_Div) 148.529 Tj
-0 -132.907 Td
-(6111 [0xC8] KEY_UP, [0xD0] KEY_DN,) 170.372 Tj
-0 -142.4 Td
-(6112 [0xC9] KEY_PGUP, [0xD1] KEY_PGDN,) 179.109 Tj
-0 -151.894 Td
-(6113 [0xCB] KEY_LF, [0xCD] KEY_RT,) 170.372 Tj
-0 -161.387 Td
-(6114 [0x97] KEY_HOME, [0xCF] KEY_END,) 174.741 Tj
-0 -170.88 Td
-(6115 [0xD2] KEY_INS, [0xD3] KEY_DEL) 170.372 Tj
-0 -180.374 Td
-(6116 };) 30.5796 Tj
-0 -189.867 Td
-(6117 ) 21.8426 Tj
-0 -199.361 Td
-(6118 ) 21.8426 Tj
-0 -208.854 Td
-(6119 ) 21.8426 Tj
-0 -218.347 Td
-(6120 ) 21.8426 Tj
-0 -227.841 Td
+(6108 'b', 'n', 'm', ',', '.', '/', NO, '*', // 0x30) 270.8479 Tj
+0 -113.9203 Td
+(6109 NO, ' ', NO, NO, NO, NO, NO, NO,) 227.1628 Tj
+0 -123.4137 Td
+(6110 NO, NO, NO, NO, NO, NO, NO, '7', // 0x40) 270.8479 Tj
+0 -132.9071 Td
+(6111 '8', '9', '-', '4', '5', '6', '+', '1',) 231.5313 Tj
+0 -142.4004 Td
+(6112 '2', '3', '0', '.', NO, NO, NO, NO, // 0x50) 270.8479 Tj
+0 -151.8938 Td
+(6113 [0x9C] '\\n', // KP_Enter) 157.2665 Tj
+0 -161.3871 Td
+(6114 [0xB5] '/', // KP_Div) 148.5295 Tj
+0 -170.8805 Td
+(6115 [0xC8] KEY_UP, [0xD0] KEY_DN,) 170.3721 Tj
+0 -180.3739 Td
+(6116 [0xC9] KEY_PGUP, [0xD1] KEY_PGDN,) 179.1091 Tj
+0 -189.8672 Td
+(6117 [0xCB] KEY_LF, [0xCD] KEY_RT,) 170.3721 Tj
+0 -199.3606 Td
+(6118 [0x97] KEY_HOME, [0xCF] KEY_END,) 174.7406 Tj
+0 -208.8539 Td
+(6119 [0xD2] KEY_INS, [0xD3] KEY_DEL) 170.3721 Tj
+0 -218.3473 Td
+(6120 };) 30.5796 Tj
+0 -227.8407 Td
(6121 ) 21.8426 Tj
0 -237.334 Td
-(6122 ) 21.8426 Tj
-0 -246.827 Td
-(6123 ) 21.8426 Tj
-0 -256.321 Td
-(6124 ) 21.8426 Tj
-0 -265.814 Td
-(6125 ) 21.8426 Tj
-0 -275.307 Td
-(6126 ) 21.8426 Tj
-0 -284.801 Td
-(6127 ) 21.8426 Tj
-0 -294.294 Td
-(6128 ) 21.8426 Tj
-0 -303.788 Td
-(6129 ) 21.8426 Tj
-0 -313.281 Td
-(6130 ) 21.8426 Tj
-0 -322.774 Td
-(6131 ) 21.8426 Tj
-0 -332.268 Td
-(6132 ) 21.8426 Tj
+(6122 static uchar shiftmap[256] =) 144.161 Tj
+0 -246.8274 Td
+(6123 {) 26.2111 Tj
+0 -256.3207 Td
+(6124 NO, 033, '!', '@', '#', '$', '%', '^', // 0x00) 270.8479 Tj
+0 -265.8141 Td
+(6125 '&', '*', '\(', '\)', '_', '+', '\\b', '\\t',) 235.8998 Tj
+0 -275.3075 Td
+(6126 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', // 0x10) 270.8479 Tj
+0 -284.8008 Td
+(6127 'O', 'P', '{', '}', '\\n', NO, 'A', 'S',) 231.5313 Tj
+0 -294.2942 Td
+(6128 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', // 0x20) 270.8479 Tj
+0 -303.7875 Td
+(6129 '"', '~', NO, '|', 'Z', 'X', 'C', 'V',) 231.5313 Tj
+0 -313.2809 Td
+(6130 'B', 'N', 'M', '<', '>', '?', NO, '*', // 0x30) 270.8479 Tj
+0 -322.7743 Td
+(6131 NO, ' ', NO, NO, NO, NO, NO, NO,) 227.1628 Tj
+0 -332.2676 Td
+(6132 NO, NO, NO, NO, NO, NO, NO, '7', // 0x40) 270.8479 Tj
0 -341.761 Td
-(6133 ) 21.8426 Tj
-0 -351.254 Td
-(6134 ) 21.8426 Tj
-0 -360.748 Td
-(6135 ) 21.8426 Tj
-0 -370.241 Td
-(6136 ) 21.8426 Tj
-0 -379.734 Td
-(6137 ) 21.8426 Tj
-0 -389.228 Td
-(6138 ) 21.8426 Tj
-0 -398.721 Td
-(6139 ) 21.8426 Tj
-0 -408.214 Td
-(6140 ) 21.8426 Tj
-0 -417.708 Td
-(6141 ) 21.8426 Tj
-0 -427.201 Td
-(6142 ) 21.8426 Tj
-0 -436.695 Td
+(6133 '8', '9', '-', '4', '5', '6', '+', '1',) 231.5313 Tj
+0 -351.2543 Td
+(6134 '2', '3', '0', '.', NO, NO, NO, NO, // 0x50) 270.8479 Tj
+0 -360.7477 Td
+(6135 [0x9C] '\\n', // KP_Enter) 157.2665 Tj
+0 -370.2411 Td
+(6136 [0xB5] '/', // KP_Div) 148.5295 Tj
+0 -379.7344 Td
+(6137 [0xC8] KEY_UP, [0xD0] KEY_DN,) 170.3721 Tj
+0 -389.2278 Td
+(6138 [0xC9] KEY_PGUP, [0xD1] KEY_PGDN,) 179.1091 Tj
+0 -398.7211 Td
+(6139 [0xCB] KEY_LF, [0xCD] KEY_RT,) 170.3721 Tj
+0 -408.2145 Td
+(6140 [0x97] KEY_HOME, [0xCF] KEY_END,) 174.7406 Tj
+0 -417.7079 Td
+(6141 [0xD2] KEY_INS, [0xD3] KEY_DEL) 170.3721 Tj
+0 -427.2012 Td
+(6142 };) 30.5796 Tj
+0 -436.6946 Td
(6143 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(6144 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(6145 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(6146 ) 21.8426 Tj
0 -474.668 Td
(6147 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(6148 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(6149 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 61) 34.9481 Tj
Q
Q
@@ -20381,111 +20360,118 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/kbd.c Page 1) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/kbd.h Page 3) 157.2665 Tj
0 -28.4801 Td
-(6150 #include "types.h") 100.476 Tj
+(6150 static uchar ctlmap[256] =) 135.4239 Tj
0 -37.9735 Td
-(6151 #include "x86.h") 91.7388 Tj
+(6151 {) 26.2111 Tj
0 -47.4668 Td
-(6152 #include "defs.h") 96.1073 Tj
+(6152 NO, NO, NO, NO, NO, NO, NO\
+, NO,) 318.9016 Tj
0 -56.9602 Td
-(6153 #include "kbd.h") 91.7388 Tj
+(6153 NO, NO, NO, NO, NO, NO, NO\
+, NO,) 318.9016 Tj
0 -66.4535 Td
-(6154 ) 21.8426 Tj
+(6154 C\('Q'\), C\('W'\), C\('E'\), C\('R'\), C\('T'\), C\
+\('Y'\), C\('U'\), C\('I'\),) 336.3756 Tj
0 -75.9469 Td
-(6155 int) 34.9481 Tj
+(6155 C\('O'\), C\('P'\), NO, NO, '\\r', NO, \
+ C\('A'\), C\('S'\),) 336.3756 Tj
0 -85.4403 Td
-(6156 kbd_getc\(void\)) 83.0018 Tj
+(6156 C\('D'\), C\('F'\), C\('G'\), C\('H'\), C\('J'\), C\
+\('K'\), C\('L'\), NO,) 318.9016 Tj
0 -94.9336 Td
-(6157 {) 26.2111 Tj
+(6157 NO, NO, NO, C\('\\\\'\), C\('Z'\), C\('X\
+'\), C\('C'\), C\('V'\),) 336.3756 Tj
0 -104.427 Td
-(6158 static uint shift;) 109.213 Tj
-0 -113.92 Td
-(6159 static uchar *charcode[4] = {) 157.267 Tj
-0 -123.414 Td
-(6160 normalmap, shiftmap, ctlmap, ctlmap) 192.215 Tj
-0 -132.907 Td
-(6161 };) 39.3166 Tj
-0 -142.4 Td
-(6162 uint st, data, c;) 104.844 Tj
-0 -151.894 Td
-(6163 ) 21.8426 Tj
-0 -161.387 Td
-(6164 st = inb\(KBSTATP\);) 109.213 Tj
-0 -170.88 Td
-(6165 if\(\(st & KBS_DIB\) == 0\)) 131.055 Tj
-0 -180.374 Td
-(6166 return -1;) 83.0018 Tj
-0 -189.867 Td
-(6167 data = inb\(KBDATAP\);) 117.95 Tj
-0 -199.361 Td
+(6158 C\('B'\), C\('N'\), C\('M'\), NO, NO, C\('/\
+'\), NO, NO,) 318.9016 Tj
+0 -113.9203 Td
+(6159 [0x9C] '\\r', // KP_Enter) 157.2665 Tj
+0 -123.4137 Td
+(6160 [0xB5] C\('/'\), // KP_Div) 148.5295 Tj
+0 -132.9071 Td
+(6161 [0xC8] KEY_UP, [0xD0] KEY_DN,) 170.3721 Tj
+0 -142.4004 Td
+(6162 [0xC9] KEY_PGUP, [0xD1] KEY_PGDN,) 179.1091 Tj
+0 -151.8938 Td
+(6163 [0xCB] KEY_LF, [0xCD] KEY_RT,) 170.3721 Tj
+0 -161.3871 Td
+(6164 [0x97] KEY_HOME, [0xCF] KEY_END,) 174.7406 Tj
+0 -170.8805 Td
+(6165 [0xD2] KEY_INS, [0xD3] KEY_DEL) 170.3721 Tj
+0 -180.3739 Td
+(6166 };) 30.5796 Tj
+0 -189.8672 Td
+(6167 ) 21.8426 Tj
+0 -199.3606 Td
(6168 ) 21.8426 Tj
-0 -208.854 Td
-(6169 if\(data == 0xE0\){) 104.844 Tj
-0 -218.347 Td
-(6170 shift |= E0ESC;) 104.844 Tj
-0 -227.841 Td
-(6171 return 0;) 78.6333 Tj
+0 -208.8539 Td
+(6169 ) 21.8426 Tj
+0 -218.3473 Td
+(6170 ) 21.8426 Tj
+0 -227.8407 Td
+(6171 ) 21.8426 Tj
0 -237.334 Td
-(6172 } else if\(data & 0x80\){) 131.055 Tj
-0 -246.827 Td
-(6173 // Key released) 104.844 Tj
-0 -256.321 Td
-(6174 data = \(shift & E0ESC ? data : data & 0x7F\);) 231.531 Tj
-0 -265.814 Td
-(6175 shift &= ~\(shiftcode[data] | E0ESC\);) 196.583 Tj
-0 -275.307 Td
-(6176 return 0;) 78.6333 Tj
-0 -284.801 Td
-(6177 } else if\(shift & E0ESC\){) 139.792 Tj
-0 -294.294 Td
-(6178 // Last character was an E0 escape; or with 0x80) 249.005 Tj
-0 -303.788 Td
-(6179 data |= 0x80;) 96.1073 Tj
-0 -313.281 Td
-(6180 shift &= ~E0ESC;) 109.213 Tj
-0 -322.774 Td
-(6181 }) 34.9481 Tj
-0 -332.268 Td
+(6172 ) 21.8426 Tj
+0 -246.8274 Td
+(6173 ) 21.8426 Tj
+0 -256.3207 Td
+(6174 ) 21.8426 Tj
+0 -265.8141 Td
+(6175 ) 21.8426 Tj
+0 -275.3075 Td
+(6176 ) 21.8426 Tj
+0 -284.8008 Td
+(6177 ) 21.8426 Tj
+0 -294.2942 Td
+(6178 ) 21.8426 Tj
+0 -303.7875 Td
+(6179 ) 21.8426 Tj
+0 -313.2809 Td
+(6180 ) 21.8426 Tj
+0 -322.7743 Td
+(6181 ) 21.8426 Tj
+0 -332.2676 Td
(6182 ) 21.8426 Tj
0 -341.761 Td
-(6183 shift |= shiftcode[data];) 139.792 Tj
-0 -351.254 Td
-(6184 shift ^= togglecode[data];) 144.161 Tj
-0 -360.748 Td
-(6185 c = charcode[shift & \(CTL | SHIFT\)][data];) 214.057 Tj
-0 -370.241 Td
-(6186 if\(shift & CAPSLOCK\){) 122.318 Tj
-0 -379.734 Td
-(6187 if\('a' <= c && c <= 'z'\)) 144.161 Tj
-0 -389.228 Td
-(6188 c += 'A' - 'a';) 113.581 Tj
-0 -398.721 Td
-(6189 else if\('A' <= c && c <= 'Z'\)) 166.004 Tj
-0 -408.214 Td
-(6190 c += 'a' - 'A';) 113.581 Tj
-0 -417.708 Td
-(6191 }) 34.9481 Tj
-0 -427.201 Td
-(6192 return c;) 69.8962 Tj
-0 -436.695 Td
-(6193 }) 26.2111 Tj
-0 -446.188 Td
+(6183 ) 21.8426 Tj
+0 -351.2543 Td
+(6184 ) 21.8426 Tj
+0 -360.7477 Td
+(6185 ) 21.8426 Tj
+0 -370.2411 Td
+(6186 ) 21.8426 Tj
+0 -379.7344 Td
+(6187 ) 21.8426 Tj
+0 -389.2278 Td
+(6188 ) 21.8426 Tj
+0 -398.7211 Td
+(6189 ) 21.8426 Tj
+0 -408.2145 Td
+(6190 ) 21.8426 Tj
+0 -417.7079 Td
+(6191 ) 21.8426 Tj
+0 -427.2012 Td
+(6192 ) 21.8426 Tj
+0 -436.6946 Td
+(6193 ) 21.8426 Tj
+0 -446.1879 Td
(6194 ) 21.8426 Tj
-0 -455.681 Td
-(6195 void) 39.3166 Tj
-0 -465.175 Td
-(6196 kbd_intr\(void\)) 83.0018 Tj
+0 -455.6813 Td
+(6195 ) 21.8426 Tj
+0 -465.1747 Td
+(6196 ) 21.8426 Tj
0 -474.668 Td
-(6197 {) 26.2111 Tj
-0 -484.161 Td
-(6198 console_intr\(kbd_getc\);) 131.055 Tj
-0 -493.655 Td
-(6199 }) 26.2111 Tj
-0 -522.135 Td
+(6197 ) 21.8426 Tj
+0 -484.1614 Td
+(6198 ) 21.8426 Tj
+0 -493.6547 Td
+(6199 ) 21.8426 Tj
+0 -522.1348 Td
(Sheet 61) 34.9481 Tj
Q
Q
@@ -20514,8 +20500,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -20530,113 +20515,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/console.c Page 1) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/kbd.c Page 1) 157.2665 Tj
0 -28.4801 Td
-(6200 // Console input and output.) 144.161 Tj
+(6200 #include "types.h") 100.4758 Tj
0 -37.9735 Td
-(6201 // Input is from the keyboard only.) 174.741 Tj
+(6201 #include "x86.h") 91.7388 Tj
0 -47.4668 Td
-(6202 // Output is written to the screen and the printer port.) 266.479 Tj
+(6202 #include "defs.h") 96.1073 Tj
0 -56.9602 Td
-(6203 ) 21.8426 Tj
+(6203 #include "kbd.h") 91.7388 Tj
0 -66.4535 Td
-(6204 #include "types.h") 100.476 Tj
+(6204 ) 21.8426 Tj
0 -75.9469 Td
-(6205 #include "defs.h") 96.1073 Tj
+(6205 int) 34.9481 Tj
0 -85.4403 Td
-(6206 #include "param.h") 100.476 Tj
+(6206 kbd_getc\(void\)) 83.0018 Tj
0 -94.9336 Td
-(6207 #include "traps.h") 100.476 Tj
+(6207 {) 26.2111 Tj
0 -104.427 Td
-(6208 #include "spinlock.h") 113.581 Tj
-0 -113.92 Td
-(6209 #include "dev.h") 91.7388 Tj
-0 -123.414 Td
-(6210 #include "mmu.h") 91.7388 Tj
-0 -132.907 Td
-(6211 #include "proc.h") 96.1073 Tj
-0 -142.4 Td
-(6212 #include "x86.h") 91.7388 Tj
-0 -151.894 Td
+(6208 static uint shift;) 109.2129 Tj
+0 -113.9203 Td
+(6209 static uchar *charcode[4] = {) 157.2665 Tj
+0 -123.4137 Td
+(6210 normalmap, shiftmap, ctlmap, ctlmap) 192.2146 Tj
+0 -132.9071 Td
+(6211 };) 39.3166 Tj
+0 -142.4004 Td
+(6212 uint st, data, c;) 104.8443 Tj
+0 -151.8938 Td
(6213 ) 21.8426 Tj
-0 -161.387 Td
-(6214 #define CRTPORT 0x3d4) 113.581 Tj
-0 -170.88 Td
-(6215 #define LPTPORT 0x378) 113.581 Tj
-0 -180.374 Td
-(6216 #define BACKSPACE 0x100) 122.318 Tj
-0 -189.867 Td
-(6217 ) 21.8426 Tj
-0 -199.361 Td
-(6218 static ushort *crt = \(ushort*\)0xb8000; // CGA memory) 253.374 Tj
-0 -208.854 Td
-(6219 ) 21.8426 Tj
-0 -218.347 Td
-(6220 static struct spinlock console_lock;) 179.109 Tj
-0 -227.841 Td
-(6221 int panicked = 0;) 96.1073 Tj
+0 -161.3871 Td
+(6214 st = inb\(KBSTATP\);) 109.2129 Tj
+0 -170.8805 Td
+(6215 if\(\(st & KBS_DIB\) == 0\)) 131.0554 Tj
+0 -180.3739 Td
+(6216 return -1;) 83.0018 Tj
+0 -189.8672 Td
+(6217 data = inb\(KBDATAP\);) 117.9499 Tj
+0 -199.3606 Td
+(6218 ) 21.8426 Tj
+0 -208.8539 Td
+(6219 if\(data == 0xE0\){) 104.8443 Tj
+0 -218.3473 Td
+(6220 shift |= E0ESC;) 104.8443 Tj
+0 -227.8407 Td
+(6221 return 0;) 78.6333 Tj
0 -237.334 Td
-(6222 int use_console_lock = 0;) 131.055 Tj
-0 -246.827 Td
-(6223 ) 21.8426 Tj
-0 -256.321 Td
-(6224 // Copy console output to parallel port, which you can tel\
-l) 279.585 Tj
-0 -265.814 Td
-(6225 // .bochsrc to copy to the stdout:) 170.372 Tj
-0 -275.307 Td
-(6226 // parport1: enabled=1, file="/dev/stdout") 214.057 Tj
-0 -284.801 Td
-(6227 static void) 69.8962 Tj
-0 -294.294 Td
-(6228 lpt_putc\(int c\)) 87.3703 Tj
-0 -303.788 Td
-(6229 {) 26.2111 Tj
-0 -313.281 Td
-(6230 int i;) 56.7907 Tj
-0 -322.774 Td
-(6231 ) 21.8426 Tj
-0 -332.268 Td
-(6232 for\(i = 0; !\(inb\(LPTPORT+1\) & 0x80\) && i < 12800; i\
-++\)) 266.479 Tj
+(6222 } else if\(data & 0x80\){) 131.0554 Tj
+0 -246.8274 Td
+(6223 // Key released) 104.8443 Tj
+0 -256.3207 Td
+(6224 data = \(shift & E0ESC ? data : data & 0x7F\);) 231.5313 Tj
+0 -265.8141 Td
+(6225 shift &= ~\(shiftcode[data] | E0ESC\);) 196.5831 Tj
+0 -275.3075 Td
+(6226 return 0;) 78.6333 Tj
+0 -284.8008 Td
+(6227 } else if\(shift & E0ESC\){) 139.7925 Tj
+0 -294.2942 Td
+(6228 // Last character was an E0 escape; or with 0x80) 249.0053 Tj
+0 -303.7875 Td
+(6229 data |= 0x80;) 96.1073 Tj
+0 -313.2809 Td
+(6230 shift &= ~E0ESC;) 109.2129 Tj
+0 -322.7743 Td
+(6231 }) 34.9481 Tj
+0 -332.2676 Td
+(6232 ) 21.8426 Tj
0 -341.761 Td
-(6233 ;) 43.6851 Tj
-0 -351.254 Td
-(6234 if\(c == BACKSPACE\)) 109.213 Tj
-0 -360.748 Td
-(6235 c = '\\b';) 78.6333 Tj
-0 -370.241 Td
-(6236 outb\(LPTPORT+0, c\);) 113.581 Tj
-0 -379.734 Td
-(6237 outb\(LPTPORT+2, 0x08|0x04|0x01\);) 170.372 Tj
-0 -389.228 Td
-(6238 outb\(LPTPORT+2, 0x08\);) 126.687 Tj
-0 -398.721 Td
-(6239 }) 26.2111 Tj
-0 -408.214 Td
-(6240 ) 21.8426 Tj
-0 -417.708 Td
-(6241 ) 21.8426 Tj
-0 -427.201 Td
-(6242 ) 21.8426 Tj
-0 -436.695 Td
-(6243 ) 21.8426 Tj
-0 -446.188 Td
+(6233 shift |= shiftcode[data];) 139.7925 Tj
+0 -351.2543 Td
+(6234 shift ^= togglecode[data];) 144.161 Tj
+0 -360.7477 Td
+(6235 c = charcode[shift & \(CTL | SHIFT\)][data];) 214.0572 Tj
+0 -370.2411 Td
+(6236 if\(shift & CAPSLOCK\){) 122.3184 Tj
+0 -379.7344 Td
+(6237 if\('a' <= c && c <= 'z'\)) 144.161 Tj
+0 -389.2278 Td
+(6238 c += 'A' - 'a';) 113.5814 Tj
+0 -398.7211 Td
+(6239 else if\('A' <= c && c <= 'Z'\)) 166.0035 Tj
+0 -408.2145 Td
+(6240 c += 'a' - 'A';) 113.5814 Tj
+0 -417.7079 Td
+(6241 }) 34.9481 Tj
+0 -427.2012 Td
+(6242 return c;) 69.8962 Tj
+0 -436.6946 Td
+(6243 }) 26.2111 Tj
+0 -446.1879 Td
(6244 ) 21.8426 Tj
-0 -455.681 Td
-(6245 ) 21.8426 Tj
-0 -465.175 Td
-(6246 ) 21.8426 Tj
+0 -455.6813 Td
+(6245 void) 39.3166 Tj
+0 -465.1747 Td
+(6246 kbd_intr\(void\)) 83.0018 Tj
0 -474.668 Td
-(6247 ) 21.8426 Tj
-0 -484.161 Td
-(6248 ) 21.8426 Tj
-0 -493.655 Td
-(6249 ) 21.8426 Tj
-0 -522.135 Td
+(6247 {) 26.2111 Tj
+0 -484.1614 Td
+(6248 console_intr\(kbd_getc\);) 131.0554 Tj
+0 -493.6547 Td
+(6249 }) 26.2111 Tj
+0 -522.1348 Td
(Sheet 62) 34.9481 Tj
Q
Q
@@ -20651,112 +20634,113 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/console.c Page 2) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/console.c Page 1) 174.7406 Tj
0 -28.4801 Td
-(6250 static void) 69.8962 Tj
+(6250 // Console input and output.) 144.161 Tj
0 -37.9735 Td
-(6251 cga_putc\(int c\)) 87.3703 Tj
+(6251 // Input is from the keyboard only.) 174.7406 Tj
0 -47.4668 Td
-(6252 {) 26.2111 Tj
+(6252 // Output is written to the screen and the printer port.) 266.4794 Tj
0 -56.9602 Td
-(6253 int pos;) 65.5277 Tj
+(6253 ) 21.8426 Tj
0 -66.4535 Td
-(6254 ) 21.8426 Tj
+(6254 #include "types.h") 100.4758 Tj
0 -75.9469 Td
-(6255 // Cursor position: col + 80*row.) 174.741 Tj
+(6255 #include "defs.h") 96.1073 Tj
0 -85.4403 Td
-(6256 outb\(CRTPORT, 14\);) 109.213 Tj
+(6256 #include "param.h") 100.4758 Tj
0 -94.9336 Td
-(6257 pos = inb\(CRTPORT+1\) << 8;) 144.161 Tj
+(6257 #include "traps.h") 100.4758 Tj
0 -104.427 Td
-(6258 outb\(CRTPORT, 15\);) 109.213 Tj
-0 -113.92 Td
-(6259 pos |= inb\(CRTPORT+1\);) 126.687 Tj
-0 -123.414 Td
-(6260 ) 21.8426 Tj
-0 -132.907 Td
-(6261 if\(c == '\\n'\)) 87.3703 Tj
-0 -142.4 Td
-(6262 pos += 80 - pos%80;) 122.318 Tj
-0 -151.894 Td
-(6263 else if\(c == BACKSPACE\){) 135.424 Tj
-0 -161.387 Td
-(6264 if\(pos > 0\)) 87.3703 Tj
-0 -170.88 Td
-(6265 crt[--pos] = ' ' | 0x0700;) 161.635 Tj
-0 -180.374 Td
-(6266 } else) 56.7907 Tj
-0 -189.867 Td
-(6267 crt[pos++] = \(c&0xff\) | 0x0700; // black on white) 257.742 Tj
-0 -199.361 Td
-(6268 ) 21.8426 Tj
-0 -208.854 Td
-(6269 if\(\(pos/80\) >= 24\){ // Scroll up.) 179.109 Tj
-0 -218.347 Td
-(6270 memmove\(crt, crt+80, sizeof\(crt[0]\)*23*80\);) 227.163 Tj
-0 -227.841 Td
-(6271 pos -= 80;) 83.0018 Tj
+(6258 #include "spinlock.h") 113.5814 Tj
+0 -113.9203 Td
+(6259 #include "dev.h") 91.7388 Tj
+0 -123.4137 Td
+(6260 #include "mmu.h") 91.7388 Tj
+0 -132.9071 Td
+(6261 #include "proc.h") 96.1073 Tj
+0 -142.4004 Td
+(6262 #include "x86.h") 91.7388 Tj
+0 -151.8938 Td
+(6263 ) 21.8426 Tj
+0 -161.3871 Td
+(6264 #define CRTPORT 0x3d4) 113.5814 Tj
+0 -170.8805 Td
+(6265 #define LPTPORT 0x378) 113.5814 Tj
+0 -180.3739 Td
+(6266 #define BACKSPACE 0x100) 122.3184 Tj
+0 -189.8672 Td
+(6267 ) 21.8426 Tj
+0 -199.3606 Td
+(6268 static ushort *crt = \(ushort*\)0xb8000; // CGA memory) 253.3738 Tj
+0 -208.8539 Td
+(6269 ) 21.8426 Tj
+0 -218.3473 Td
+(6270 static struct spinlock console_lock;) 179.1091 Tj
+0 -227.8407 Td
+(6271 int panicked = 0;) 96.1073 Tj
0 -237.334 Td
-(6272 memset\(crt+pos, 0, sizeof\(crt[0]\)*\(24*80 - pos\)\)\
-;) 253.374 Tj
-0 -246.827 Td
-(6273 }) 34.9481 Tj
-0 -256.321 Td
-(6274 ) 21.8426 Tj
-0 -265.814 Td
-(6275 outb\(CRTPORT, 14\);) 109.213 Tj
-0 -275.307 Td
-(6276 outb\(CRTPORT+1, pos>>8\);) 135.424 Tj
-0 -284.801 Td
-(6277 outb\(CRTPORT, 15\);) 109.213 Tj
-0 -294.294 Td
-(6278 outb\(CRTPORT+1, pos\);) 122.318 Tj
-0 -303.788 Td
-(6279 crt[pos] = ' ' | 0x0700;) 135.424 Tj
-0 -313.281 Td
-(6280 }) 26.2111 Tj
-0 -322.774 Td
+(6272 int use_console_lock = 0;) 131.0554 Tj
+0 -246.8274 Td
+(6273 ) 21.8426 Tj
+0 -256.3207 Td
+(6274 // Copy console output to parallel port, which you can tel\
+l) 279.5849 Tj
+0 -265.8141 Td
+(6275 // .bochsrc to copy to the stdout:) 170.3721 Tj
+0 -275.3075 Td
+(6276 // parport1: enabled=1, file="/dev/stdout") 214.0572 Tj
+0 -284.8008 Td
+(6277 static void) 69.8962 Tj
+0 -294.2942 Td
+(6278 lpt_putc\(int c\)) 87.3703 Tj
+0 -303.7875 Td
+(6279 {) 26.2111 Tj
+0 -313.2809 Td
+(6280 int i;) 56.7907 Tj
+0 -322.7743 Td
(6281 ) 21.8426 Tj
-0 -332.268 Td
-(6282 static void) 69.8962 Tj
+0 -332.2676 Td
+(6282 for\(i = 0; !\(inb\(LPTPORT+1\) & 0x80\) && i < 12800; i\
+++\)) 266.4794 Tj
0 -341.761 Td
-(6283 cons_putc\(int c\)) 91.7388 Tj
-0 -351.254 Td
-(6284 {) 26.2111 Tj
-0 -360.748 Td
-(6285 if\(panicked\){) 87.3703 Tj
-0 -370.241 Td
-(6286 cli\(\);) 65.5277 Tj
-0 -379.734 Td
-(6287 for\(;;\)) 69.8962 Tj
-0 -389.228 Td
-(6288 ;) 52.4222 Tj
-0 -398.721 Td
-(6289 }) 34.9481 Tj
-0 -408.214 Td
+(6283 ;) 43.6851 Tj
+0 -351.2543 Td
+(6284 if\(c == BACKSPACE\)) 109.2129 Tj
+0 -360.7477 Td
+(6285 c = '\\b';) 78.6333 Tj
+0 -370.2411 Td
+(6286 outb\(LPTPORT+0, c\);) 113.5814 Tj
+0 -379.7344 Td
+(6287 outb\(LPTPORT+2, 0x08|0x04|0x01\);) 170.3721 Tj
+0 -389.2278 Td
+(6288 outb\(LPTPORT+2, 0x08\);) 126.6869 Tj
+0 -398.7211 Td
+(6289 }) 26.2111 Tj
+0 -408.2145 Td
(6290 ) 21.8426 Tj
-0 -417.708 Td
-(6291 lpt_putc\(c\);) 83.0018 Tj
-0 -427.201 Td
-(6292 cga_putc\(c\);) 83.0018 Tj
-0 -436.695 Td
-(6293 }) 26.2111 Tj
-0 -446.188 Td
+0 -417.7079 Td
+(6291 ) 21.8426 Tj
+0 -427.2012 Td
+(6292 ) 21.8426 Tj
+0 -436.6946 Td
+(6293 ) 21.8426 Tj
+0 -446.1879 Td
(6294 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(6295 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(6296 ) 21.8426 Tj
0 -474.668 Td
(6297 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(6298 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(6299 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 62) 34.9481 Tj
Q
Q
@@ -20785,8 +20769,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -20801,111 +20784,112 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/console.c Page 3) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/console.c Page 2) 174.7406 Tj
0 -28.4801 Td
-(6300 void) 39.3166 Tj
+(6300 static void) 69.8962 Tj
0 -37.9735 Td
-(6301 printint\(int xx, int base, int sgn\)) 174.741 Tj
+(6301 cga_putc\(int c\)) 87.3703 Tj
0 -47.4668 Td
(6302 {) 26.2111 Tj
0 -56.9602 Td
-(6303 static char digits[] = "0123456789ABCDEF";) 214.057 Tj
+(6303 int pos;) 65.5277 Tj
0 -66.4535 Td
-(6304 char buf[16];) 87.3703 Tj
+(6304 ) 21.8426 Tj
0 -75.9469 Td
-(6305 int i = 0, neg = 0;) 113.581 Tj
+(6305 // Cursor position: col + 80*row.) 174.7406 Tj
0 -85.4403 Td
-(6306 uint x;) 61.1592 Tj
+(6306 outb\(CRTPORT, 14\);) 109.2129 Tj
0 -94.9336 Td
-(6307 ) 21.8426 Tj
+(6307 pos = inb\(CRTPORT+1\) << 8;) 144.161 Tj
0 -104.427 Td
-(6308 if\(sgn && xx < 0\){) 109.213 Tj
-0 -113.92 Td
-(6309 neg = 1;) 74.2647 Tj
-0 -123.414 Td
-(6310 x = 0 - xx;) 87.3703 Tj
-0 -132.907 Td
-(6311 } else {) 65.5277 Tj
-0 -142.4 Td
-(6312 x = xx;) 69.8962 Tj
-0 -151.894 Td
-(6313 }) 34.9481 Tj
-0 -161.387 Td
-(6314 ) 21.8426 Tj
-0 -170.88 Td
-(6315 do{) 43.6851 Tj
-0 -180.374 Td
-(6316 buf[i++] = digits[x % base];) 161.635 Tj
-0 -189.867 Td
-(6317 }while\(\(x /= base\) != 0\);) 139.792 Tj
-0 -199.361 Td
-(6318 if\(neg\)) 61.1592 Tj
-0 -208.854 Td
-(6319 buf[i++] = '-';) 104.844 Tj
-0 -218.347 Td
-(6320 ) 21.8426 Tj
-0 -227.841 Td
-(6321 while\(--i >= 0\)) 96.1073 Tj
+(6308 outb\(CRTPORT, 15\);) 109.2129 Tj
+0 -113.9203 Td
+(6309 pos |= inb\(CRTPORT+1\);) 126.6869 Tj
+0 -123.4137 Td
+(6310 ) 21.8426 Tj
+0 -132.9071 Td
+(6311 if\(c == '\\n'\)) 87.3703 Tj
+0 -142.4004 Td
+(6312 pos += 80 - pos%80;) 122.3184 Tj
+0 -151.8938 Td
+(6313 else if\(c == BACKSPACE\){) 135.4239 Tj
+0 -161.3871 Td
+(6314 if\(pos > 0\)) 87.3703 Tj
+0 -170.8805 Td
+(6315 crt[--pos] = ' ' | 0x0700;) 161.635 Tj
+0 -180.3739 Td
+(6316 } else) 56.7907 Tj
+0 -189.8672 Td
+(6317 crt[pos++] = \(c&0xff\) | 0x0700; // black on white) 257.7424 Tj
+0 -199.3606 Td
+(6318 ) 21.8426 Tj
+0 -208.8539 Td
+(6319 if\(\(pos/80\) >= 24\){ // Scroll up.) 179.1091 Tj
+0 -218.3473 Td
+(6320 memmove\(crt, crt+80, sizeof\(crt[0]\)*23*80\);) 227.1628 Tj
+0 -227.8407 Td
+(6321 pos -= 80;) 83.0018 Tj
0 -237.334 Td
-(6322 cons_putc\(buf[i]\);) 117.95 Tj
-0 -246.827 Td
-(6323 }) 26.2111 Tj
-0 -256.321 Td
+(6322 memset\(crt+pos, 0, sizeof\(crt[0]\)*\(24*80 - pos\)\)\
+;) 253.3738 Tj
+0 -246.8274 Td
+(6323 }) 34.9481 Tj
+0 -256.3207 Td
(6324 ) 21.8426 Tj
-0 -265.814 Td
-(6325 // Print to the console. only understands %d, %x, %p, %s.) 270.848 Tj
-0 -275.307 Td
-(6326 void) 39.3166 Tj
-0 -284.801 Td
-(6327 cprintf\(char *fmt, ...\)) 122.318 Tj
-0 -294.294 Td
-(6328 {) 26.2111 Tj
-0 -303.788 Td
-(6329 int i, c, state, locking;) 139.792 Tj
-0 -313.281 Td
-(6330 uint *argp;) 78.6333 Tj
-0 -322.774 Td
-(6331 char *s;) 65.5277 Tj
-0 -332.268 Td
-(6332 ) 21.8426 Tj
+0 -265.8141 Td
+(6325 outb\(CRTPORT, 14\);) 109.2129 Tj
+0 -275.3075 Td
+(6326 outb\(CRTPORT+1, pos>>8\);) 135.4239 Tj
+0 -284.8008 Td
+(6327 outb\(CRTPORT, 15\);) 109.2129 Tj
+0 -294.2942 Td
+(6328 outb\(CRTPORT+1, pos\);) 122.3184 Tj
+0 -303.7875 Td
+(6329 crt[pos] = ' ' | 0x0700;) 135.4239 Tj
+0 -313.2809 Td
+(6330 }) 26.2111 Tj
+0 -322.7743 Td
+(6331 ) 21.8426 Tj
+0 -332.2676 Td
+(6332 void) 39.3166 Tj
0 -341.761 Td
-(6333 locking = use_console_lock;) 148.529 Tj
-0 -351.254 Td
-(6334 if\(locking\)) 78.6333 Tj
-0 -360.748 Td
-(6335 acquire\(&console_lock\);) 139.792 Tj
-0 -370.241 Td
-(6336 ) 21.8426 Tj
-0 -379.734 Td
-(6337 argp = \(uint*\)\(void*\)&fmt + 1;) 161.635 Tj
-0 -389.228 Td
-(6338 state = 0;) 74.2647 Tj
-0 -398.721 Td
-(6339 for\(i = 0; fmt[i]; i++\){) 135.424 Tj
-0 -408.214 Td
-(6340 c = fmt[i] & 0xff;) 117.95 Tj
-0 -417.708 Td
-(6341 switch\(state\){) 100.476 Tj
-0 -427.201 Td
-(6342 case 0:) 69.8962 Tj
-0 -436.695 Td
-(6343 if\(c == '%'\)) 100.476 Tj
-0 -446.188 Td
-(6344 state = '%';) 109.213 Tj
-0 -455.681 Td
-(6345 else) 65.5277 Tj
-0 -465.175 Td
-(6346 cons_putc\(c\);) 113.581 Tj
+(6333 cons_putc\(int c\)) 91.7388 Tj
+0 -351.2543 Td
+(6334 {) 26.2111 Tj
+0 -360.7477 Td
+(6335 if\(panicked\){) 87.3703 Tj
+0 -370.2411 Td
+(6336 cli\(\);) 65.5277 Tj
+0 -379.7344 Td
+(6337 for\(;;\)) 69.8962 Tj
+0 -389.2278 Td
+(6338 ;) 52.4222 Tj
+0 -398.7211 Td
+(6339 }) 34.9481 Tj
+0 -408.2145 Td
+(6340 ) 21.8426 Tj
+0 -417.7079 Td
+(6341 lpt_putc\(c\);) 83.0018 Tj
+0 -427.2012 Td
+(6342 cga_putc\(c\);) 83.0018 Tj
+0 -436.6946 Td
+(6343 }) 26.2111 Tj
+0 -446.1879 Td
+(6344 ) 21.8426 Tj
+0 -455.6813 Td
+(6345 ) 21.8426 Tj
+0 -465.1747 Td
+(6346 ) 21.8426 Tj
0 -474.668 Td
-(6347 break;) 74.2647 Tj
-0 -484.161 Td
+(6347 ) 21.8426 Tj
+0 -484.1614 Td
(6348 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(6349 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 63) 34.9481 Tj
Q
Q
@@ -20920,111 +20904,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/console.c Page 4) 174.741 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/console.c Page 3) 174.7406 Tj
0 -28.4801 Td
-(6350 case '%':) 78.6333 Tj
+(6350 void) 39.3166 Tj
0 -37.9735 Td
-(6351 switch\(c\){) 91.7388 Tj
+(6351 printint\(int xx, int base, int sgn\)) 174.7406 Tj
0 -47.4668 Td
-(6352 case 'd':) 87.3703 Tj
+(6352 {) 26.2111 Tj
0 -56.9602 Td
-(6353 printint\(*argp++, 10, 1\);) 166.004 Tj
+(6353 static char digits[] = "0123456789ABCDEF";) 214.0572 Tj
0 -66.4535 Td
-(6354 break;) 83.0018 Tj
+(6354 char buf[16];) 87.3703 Tj
0 -75.9469 Td
-(6355 case 'x':) 87.3703 Tj
+(6355 int i = 0, neg = 0;) 113.5814 Tj
0 -85.4403 Td
-(6356 case 'p':) 87.3703 Tj
+(6356 uint x;) 61.1592 Tj
0 -94.9336 Td
-(6357 printint\(*argp++, 16, 0\);) 166.004 Tj
+(6357 ) 21.8426 Tj
0 -104.427 Td
-(6358 break;) 83.0018 Tj
-0 -113.92 Td
-(6359 case 's':) 87.3703 Tj
-0 -123.414 Td
-(6360 s = \(char*\)*argp++;) 139.792 Tj
-0 -132.907 Td
-(6361 if\(s == 0\)) 100.476 Tj
-0 -142.4 Td
-(6362 s = "\(null\)";) 122.318 Tj
-0 -151.894 Td
-(6363 for\(; *s; s++\)) 117.95 Tj
-0 -161.387 Td
-(6364 cons_putc\(*s\);) 126.687 Tj
-0 -170.88 Td
-(6365 break;) 83.0018 Tj
-0 -180.374 Td
-(6366 case '%':) 87.3703 Tj
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0 -237.334 Td
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-0 -246.827 Td
-(6373 break;) 83.0018 Tj
-0 -256.321 Td
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-0 -265.814 Td
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-0 -275.307 Td
-(6376 break;) 74.2647 Tj
-0 -284.801 Td
-(6377 }) 43.6851 Tj
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0 -341.761 Td
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-0 -455.681 Td
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-0 -465.175 Td
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0 -474.668 Td
-(6397 }) 26.2111 Tj
-0 -484.161 Td
+(6397 break;) 74.2647 Tj
+0 -484.1614 Td
(6398 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(6399 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 63) 34.9481 Tj
Q
Q
@@ -21053,8 +21037,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -21069,113 +21052,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
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0 -28.4801 Td
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0 -37.9735 Td
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0 -56.9602 Td
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0 -66.4535 Td
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+(6404 break;) 83.0018 Tj
0 -75.9469 Td
-(6405 int w; // Write index) 126.687 Tj
+(6405 case 'x':) 87.3703 Tj
0 -85.4403 Td
-(6406 int e; // Edit index) 122.318 Tj
+(6406 case 'p':) 87.3703 Tj
0 -94.9336 Td
-(6407 } input;) 56.7907 Tj
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0 -104.427 Td
-(6408 ) 21.8426 Tj
-0 -113.92 Td
-(6409 #define C\(x\) \(\(x\)-'@'\) // Control-x) 183.478 Tj
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-0 -132.907 Td
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-0 -142.4 Td
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-0 -161.387 Td
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+(6416 case '%':) 87.3703 Tj
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+(6418 break;) 83.0018 Tj
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+(6421 cons_putc\('%'\);) 122.3184 Tj
0 -237.334 Td
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-{) 266.479 Tj
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-(6427 }) 52.4222 Tj
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-(6428 break;) 74.2647 Tj
-0 -303.788 Td
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+(6425 state = 0;) 91.7388 Tj
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+0 -332.2676 Td
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0 -341.761 Td
-(6433 }) 52.4222 Tj
-0 -351.254 Td
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-0 -360.748 Td
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-0 -379.734 Td
-(6437 input.buf[input.e++] = c;) 166.004 Tj
-0 -389.228 Td
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-t.r+INPUT_BUF\){) 323.27 Tj
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-(6442 }) 61.1592 Tj
-0 -436.695 Td
-(6443 }) 52.4222 Tj
-0 -446.188 Td
-(6444 break;) 74.2647 Tj
-0 -455.681 Td
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-(6446 }) 34.9481 Tj
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+(6435 console_write\(struct inode *ip, char *buf, int n\)) 235.8998 Tj
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+0 -417.7079 Td
+(6441 for\(i = 0; i < n; i++\)) 126.6869 Tj
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+(6442 cons_putc\(buf[i] & 0xff\);) 148.5295 Tj
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+(6443 release\(&console_lock\);) 131.0554 Tj
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+(6444 ilock\(ip\);) 74.2647 Tj
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+(6445 ) 21.8426 Tj
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+(6446 return n;) 69.8962 Tj
0 -474.668 Td
-(6447 release\(&input.lock\);) 122.318 Tj
-0 -484.161 Td
-(6448 }) 26.2111 Tj
-0 -493.655 Td
+(6447 }) 26.2111 Tj
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+(6448 ) 21.8426 Tj
+0 -493.6547 Td
(6449 ) 21.8426 Tj
-0 -522.135 Td
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(Sheet 64) 34.9481 Tj
Q
Q
@@ -21190,111 +21171,113 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/console.c Page 6) 174.741 Tj
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0 -28.4801 Td
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0 -37.9735 Td
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0 -56.9602 Td
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0 -66.4535 Td
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0 -75.9469 Td
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0 -85.4403 Td
-(6456 iunlock\(ip\);) 83.0018 Tj
+(6456 uint e; // Edit index) 126.6869 Tj
0 -94.9336 Td
-(6457 target = n;) 78.6333 Tj
+(6457 } input;) 56.7907 Tj
0 -104.427 Td
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-0 -113.92 Td
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-(6471 // Save ^D for next time, to make sure) 222.794 Tj
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0 -237.334 Td
-(6472 // caller gets a 0-byte result.) 192.215 Tj
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-0 -256.321 Td
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-0 -275.307 Td
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-0 -332.268 Td
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+{) 266.4794 Tj
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+(6476 cons_putc\(BACKSPACE\);) 148.5295 Tj
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+(6477 }) 52.4222 Tj
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0 -341.761 Td
-(6483 }) 34.9481 Tj
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-(6484 release\(&input.lock\);) 122.318 Tj
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-(6486 ) 21.8426 Tj
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-(6487 return target - n;) 109.213 Tj
-0 -389.228 Td
-(6488 }) 26.2111 Tj
-0 -398.721 Td
-(6489 ) 21.8426 Tj
-0 -408.214 Td
-(6490 ) 21.8426 Tj
-0 -417.708 Td
-(6491 ) 21.8426 Tj
-0 -427.201 Td
-(6492 ) 21.8426 Tj
-0 -436.695 Td
-(6493 ) 21.8426 Tj
-0 -446.188 Td
-(6494 ) 21.8426 Tj
-0 -455.681 Td
-(6495 ) 21.8426 Tj
-0 -465.175 Td
-(6496 ) 21.8426 Tj
+(6483 }) 52.4222 Tj
+0 -351.2543 Td
+(6484 break;) 74.2647 Tj
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+(6487 input.buf[input.e++ % INPUT_BUF] = c;) 218.4257 Tj
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+(6489 if\(c == '\\n' || c == C\('D'\) || input.e == inpu\
+t.r+INPUT_BUF\){) 323.2701 Tj
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+(6490 input.w = input.e;) 144.161 Tj
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+(6491 wakeup\(&input.r\);) 139.7925 Tj
+0 -427.2012 Td
+(6492 }) 61.1592 Tj
+0 -436.6946 Td
+(6493 }) 52.4222 Tj
+0 -446.1879 Td
+(6494 break;) 74.2647 Tj
+0 -455.6813 Td
+(6495 }) 43.6851 Tj
+0 -465.1747 Td
+(6496 }) 34.9481 Tj
0 -474.668 Td
-(6497 ) 21.8426 Tj
-0 -484.161 Td
-(6498 ) 21.8426 Tj
-0 -493.655 Td
+(6497 release\(&input.lock\);) 122.3184 Tj
+0 -484.1614 Td
+(6498 }) 26.2111 Tj
+0 -493.6547 Td
(6499 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 64) 34.9481 Tj
Q
Q
@@ -21323,8 +21306,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -21339,111 +21321,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/console.c Page 7) 174.741 Tj
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0 -37.9735 Td
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0 -47.4668 Td
(6502 {) 26.2111 Tj
0 -56.9602 Td
-(6503 initlock\(&console_lock, "console"\);) 183.478 Tj
+(6503 uint target;) 83.0018 Tj
0 -66.4535 Td
-(6504 initlock\(&input.lock, "console input"\);) 200.952 Tj
+(6504 int c;) 56.7907 Tj
0 -75.9469 Td
(6505 ) 21.8426 Tj
0 -85.4403 Td
-(6506 devsw[CONSOLE].write = console_write;) 192.215 Tj
+(6506 iunlock\(ip\);) 83.0018 Tj
0 -94.9336 Td
-(6507 devsw[CONSOLE].read = console_read;) 183.478 Tj
+(6507 target = n;) 78.6333 Tj
0 -104.427 Td
-(6508 //use_console_lock = 1;) 131.055 Tj
-0 -113.92 Td
-(6509 ) 21.8426 Tj
-0 -123.414 Td
-(6510 pic_enable\(IRQ_KBD\);) 117.95 Tj
-0 -132.907 Td
-(6511 ioapic_enable\(IRQ_KBD, 0\);) 144.161 Tj
-0 -142.4 Td
-(6512 }) 26.2111 Tj
-0 -151.894 Td
-(6513 ) 21.8426 Tj
-0 -161.387 Td
-(6514 void) 39.3166 Tj
-0 -170.88 Td
-(6515 panic\(char *s\)) 83.0018 Tj
-0 -180.374 Td
-(6516 {) 26.2111 Tj
-0 -189.867 Td
-(6517 int i;) 56.7907 Tj
-0 -199.361 Td
-(6518 uint pcs[10];) 87.3703 Tj
-0 -208.854 Td
-(6519 ) 21.8426 Tj
-0 -218.347 Td
-(6520 __asm __volatile\("cli"\);) 135.424 Tj
-0 -227.841 Td
-(6521 use_console_lock = 0;) 122.318 Tj
+(6508 acquire\(&input.lock\);) 122.3184 Tj
+0 -113.9203 Td
+(6509 while\(n > 0\){) 87.3703 Tj
+0 -123.4137 Td
+(6510 while\(input.r == input.w\){) 152.898 Tj
+0 -132.9071 Td
+(6511 if\(cp->killed\){) 113.5814 Tj
+0 -142.4004 Td
+(6512 release\(&input.lock\);) 148.5295 Tj
+0 -151.8938 Td
+(6513 ilock\(ip\);) 100.4758 Tj
+0 -161.3871 Td
+(6514 return -1;) 100.4758 Tj
+0 -170.8805 Td
+(6515 }) 52.4222 Tj
+0 -180.3739 Td
+(6516 sleep\(&input.r, &input.lock\);) 174.7406 Tj
+0 -189.8672 Td
+(6517 }) 43.6851 Tj
+0 -199.3606 Td
+(6518 c = input.buf[input.r++ % INPUT_BUF];) 200.9517 Tj
+0 -208.8539 Td
+(6519 if\(c == C\('D'\)\){ // EOF) 144.161 Tj
+0 -218.3473 Td
+(6520 if\(n < target\){) 113.5814 Tj
+0 -227.8407 Td
+(6521 // Save ^D for next time, to make sure) 222.7942 Tj
0 -237.334 Td
-(6522 cprintf\("panic \(%d\): ", cpu\(\)\);) 166.004 Tj
-0 -246.827 Td
-(6523 cprintf\(s, 0\);) 91.7388 Tj
-0 -256.321 Td
-(6524 cprintf\("\\n", 0\);) 104.844 Tj
-0 -265.814 Td
-(6525 getcallerpcs\(&s, pcs\);) 126.687 Tj
-0 -275.307 Td
-(6526 for\(i=0; i<10; i++\)) 113.581 Tj
-0 -284.801 Td
-(6527 cprintf\(" %p", pcs[i]\);) 139.792 Tj
-0 -294.294 Td
-(6528 panicked = 1; // freeze other CPU) 174.741 Tj
-0 -303.788 Td
-(6529 for\(;;\)) 61.1592 Tj
-0 -313.281 Td
-(6530 ;) 43.6851 Tj
-0 -322.774 Td
-(6531 }) 26.2111 Tj
-0 -332.268 Td
-(6532 ) 21.8426 Tj
+(6522 // caller gets a 0-byte result.) 192.2146 Tj
+0 -246.8274 Td
+(6523 input.r--;) 100.4758 Tj
+0 -256.3207 Td
+(6524 }) 52.4222 Tj
+0 -265.8141 Td
+(6525 break;) 74.2647 Tj
+0 -275.3075 Td
+(6526 }) 43.6851 Tj
+0 -284.8008 Td
+(6527 *dst++ = c;) 87.3703 Tj
+0 -294.2942 Td
+(6528 --n;) 56.7907 Tj
+0 -303.7875 Td
+(6529 if\(c == '\\n'\)) 96.1073 Tj
+0 -313.2809 Td
+(6530 break;) 74.2647 Tj
+0 -322.7743 Td
+(6531 }) 34.9481 Tj
+0 -332.2676 Td
+(6532 release\(&input.lock\);) 122.3184 Tj
0 -341.761 Td
-(6533 ) 21.8426 Tj
-0 -351.254 Td
+(6533 ilock\(ip\);) 74.2647 Tj
+0 -351.2543 Td
(6534 ) 21.8426 Tj
-0 -360.748 Td
-(6535 ) 21.8426 Tj
-0 -370.241 Td
-(6536 ) 21.8426 Tj
-0 -379.734 Td
+0 -360.7477 Td
+(6535 return target - n;) 109.2129 Tj
+0 -370.2411 Td
+(6536 }) 26.2111 Tj
+0 -379.7344 Td
(6537 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(6538 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(6539 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(6540 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(6541 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(6542 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(6543 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(6544 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(6545 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(6546 ) 21.8426 Tj
0 -474.668 Td
(6547 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(6548 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(6549 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 65) 34.9481 Tj
Q
Q
@@ -21458,115 +21440,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/timer.c Page 1) 166.004 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/console.c Page 7) 174.7406 Tj
0 -28.4801 Td
-(6550 // Intel 8253/8254/82C54 Programmable Interval Timer \(PIT\
-\).) 279.585 Tj
+(6550 void) 39.3166 Tj
0 -37.9735 Td
-(6551 // Only used on uniprocessors;) 152.898 Tj
+(6551 console_init\(void\)) 100.4758 Tj
0 -47.4668 Td
-(6552 // SMP machines use the local APIC timer.) 200.952 Tj
+(6552 {) 26.2111 Tj
0 -56.9602 Td
-(6553 ) 21.8426 Tj
+(6553 initlock\(&console_lock, "console"\);) 183.4776 Tj
0 -66.4535 Td
-(6554 #include "types.h") 100.476 Tj
+(6554 initlock\(&input.lock, "console input"\);) 200.9517 Tj
0 -75.9469 Td
-(6555 #include "defs.h") 96.1073 Tj
+(6555 ) 21.8426 Tj
0 -85.4403 Td
-(6556 #include "traps.h") 100.476 Tj
+(6556 devsw[CONSOLE].write = console_write;) 192.2146 Tj
0 -94.9336 Td
-(6557 #include "x86.h") 91.7388 Tj
+(6557 devsw[CONSOLE].read = console_read;) 183.4776 Tj
0 -104.427 Td
-(6558 ) 21.8426 Tj
-0 -113.92 Td
-(6559 #define IO_TIMER1 0x040 // 8253 Timer #1) 266.479 Tj
-0 -123.414 Td
-(6560 ) 21.8426 Tj
-0 -132.907 Td
-(6561 // Frequency of all three count-down timers;) 214.057 Tj
-0 -142.4 Td
-(6562 // \(TIMER_FREQ/freq\) is the appropriate count) 218.426 Tj
-0 -151.894 Td
-(6563 // to generate a frequency of freq Hz.) 187.846 Tj
-0 -161.387 Td
-(6564 ) 21.8426 Tj
-0 -170.88 Td
-(6565 #define TIMER_FREQ 1193182) 157.267 Tj
-0 -180.374 Td
-(6566 #define TIMER_DIV\(x\) \(\(TIMER_FREQ+\(x\)/2\)/\(x\)\)) 231.531 Tj
-0 -189.867 Td
-(6567 ) 21.8426 Tj
-0 -199.361 Td
-(6568 #define TIMER_MODE \(IO_TIMER1 + 3\) // timer mode po\
-rt) 275.216 Tj
-0 -208.854 Td
-(6569 #define TIMER_SEL0 0x00 // select counter 0) 244.637 Tj
-0 -218.347 Td
-(6570 #define TIMER_RATEGEN 0x04 // mode 2, rate generator) 270.848 Tj
-0 -227.841 Td
-(6571 #define TIMER_16BIT 0x30 // r/w counter 16 bits, LS\
-B first) 305.796 Tj
+(6558 use_console_lock = 1;) 122.3184 Tj
+0 -113.9203 Td
+(6559 ) 21.8426 Tj
+0 -123.4137 Td
+(6560 pic_enable\(IRQ_KBD\);) 117.9499 Tj
+0 -132.9071 Td
+(6561 ioapic_enable\(IRQ_KBD, 0\);) 144.161 Tj
+0 -142.4004 Td
+(6562 }) 26.2111 Tj
+0 -151.8938 Td
+(6563 ) 21.8426 Tj
+0 -161.3871 Td
+(6564 void) 39.3166 Tj
+0 -170.8805 Td
+(6565 panic\(char *s\)) 83.0018 Tj
+0 -180.3739 Td
+(6566 {) 26.2111 Tj
+0 -189.8672 Td
+(6567 int i;) 56.7907 Tj
+0 -199.3606 Td
+(6568 uint pcs[10];) 87.3703 Tj
+0 -208.8539 Td
+(6569 ) 21.8426 Tj
+0 -218.3473 Td
+(6570 __asm __volatile\("cli"\);) 135.4239 Tj
+0 -227.8407 Td
+(6571 use_console_lock = 0;) 122.3184 Tj
0 -237.334 Td
-(6572 ) 21.8426 Tj
-0 -246.827 Td
-(6573 void) 39.3166 Tj
-0 -256.321 Td
-(6574 timer_init\(void\)) 91.7388 Tj
-0 -265.814 Td
-(6575 {) 26.2111 Tj
-0 -275.307 Td
-(6576 // Interrupt 100 times/sec.) 148.529 Tj
-0 -284.801 Td
-(6577 outb\(TIMER_MODE, TIMER_SEL0 | TIMER_RATEGEN | TIMER_16B\
-IT\);) 288.322 Tj
-0 -294.294 Td
-(6578 outb\(IO_TIMER1, TIMER_DIV\(100\) % 256\);) 196.583 Tj
-0 -303.788 Td
-(6579 outb\(IO_TIMER1, TIMER_DIV\(100\) / 256\);) 196.583 Tj
-0 -313.281 Td
-(6580 pic_enable\(IRQ_TIMER\);) 126.687 Tj
-0 -322.774 Td
+(6572 cprintf\("cpu%d: panic: ", cpu\(\)\);) 174.7406 Tj
+0 -246.8274 Td
+(6573 cprintf\(s\);) 78.6333 Tj
+0 -256.3207 Td
+(6574 cprintf\("\\n"\);) 91.7388 Tj
+0 -265.8141 Td
+(6575 getcallerpcs\(&s, pcs\);) 126.6869 Tj
+0 -275.3075 Td
+(6576 for\(i=0; i<10; i++\)) 113.5814 Tj
+0 -284.8008 Td
+(6577 cprintf\(" %p", pcs[i]\);) 139.7925 Tj
+0 -294.2942 Td
+(6578 panicked = 1; // freeze other CPU) 174.7406 Tj
+0 -303.7875 Td
+(6579 for\(;;\)) 61.1592 Tj
+0 -313.2809 Td
+(6580 ;) 43.6851 Tj
+0 -322.7743 Td
(6581 }) 26.2111 Tj
-0 -332.268 Td
+0 -332.2676 Td
(6582 ) 21.8426 Tj
0 -341.761 Td
(6583 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(6584 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(6585 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(6586 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(6587 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(6588 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(6589 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(6590 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(6591 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(6592 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(6593 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(6594 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(6595 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(6596 ) 21.8426 Tj
0 -474.668 Td
(6597 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(6598 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(6599 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 65) 34.9481 Tj
Q
Q
@@ -21595,8 +21573,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -21611,111 +21588,115 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/initcode.S Page 1) 179.109 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/timer.c Page 1) 166.0035 Tj
0 -28.4801 Td
-(6600 # Initial process execs /init.) 152.898 Tj
+(6600 // Intel 8253/8254/82C54 Programmable Interval Timer \(PIT\
+\).) 279.5849 Tj
0 -37.9735 Td
-(6601 ) 21.8426 Tj
+(6601 // Only used on uniprocessors;) 152.898 Tj
0 -47.4668 Td
-(6602 #include "syscall.h") 109.213 Tj
+(6602 // SMP machines use the local APIC timer.) 200.9517 Tj
0 -56.9602 Td
-(6603 #include "traps.h") 100.476 Tj
+(6603 ) 21.8426 Tj
0 -66.4535 Td
-(6604 ) 21.8426 Tj
+(6604 #include "types.h") 100.4758 Tj
0 -75.9469 Td
-(6605 # exec\(init, argv\)) 100.476 Tj
+(6605 #include "defs.h") 96.1073 Tj
0 -85.4403 Td
-(6606 .globl start) 74.2647 Tj
+(6606 #include "traps.h") 100.4758 Tj
0 -94.9336 Td
-(6607 start:) 48.0537 Tj
+(6607 #include "x86.h") 91.7388 Tj
0 -104.427 Td
-(6608 pushl $argv) 78.6333 Tj
-0 -113.92 Td
-(6609 pushl $init) 78.6333 Tj
-0 -123.414 Td
-(6610 pushl $0) 65.5277 Tj
-0 -132.907 Td
-(6611 movl $SYS_exec, %eax) 117.95 Tj
-0 -142.4 Td
-(6612 int $T_SYSCALL) 91.7388 Tj
-0 -151.894 Td
-(6613 ) 21.8426 Tj
-0 -161.387 Td
-(6614 # for\(;;\) exit\(\);) 96.1073 Tj
-0 -170.88 Td
-(6615 exit:) 43.6851 Tj
-0 -180.374 Td
-(6616 movl $SYS_exit, %eax) 117.95 Tj
-0 -189.867 Td
-(6617 int $T_SYSCALL) 91.7388 Tj
-0 -199.361 Td
-(6618 jmp exit) 65.5277 Tj
-0 -208.854 Td
-(6619 ) 21.8426 Tj
-0 -218.347 Td
-(6620 # char init[] = "/init\\0";) 135.424 Tj
-0 -227.841 Td
-(6621 init:) 43.6851 Tj
+(6608 ) 21.8426 Tj
+0 -113.9203 Td
+(6609 #define IO_TIMER1 0x040 // 8253 Timer #1) 266.4794 Tj
+0 -123.4137 Td
+(6610 ) 21.8426 Tj
+0 -132.9071 Td
+(6611 // Frequency of all three count-down timers;) 214.0572 Tj
+0 -142.4004 Td
+(6612 // \(TIMER_FREQ/freq\) is the appropriate count) 218.4257 Tj
+0 -151.8938 Td
+(6613 // to generate a frequency of freq Hz.) 187.8461 Tj
+0 -161.3871 Td
+(6614 ) 21.8426 Tj
+0 -170.8805 Td
+(6615 #define TIMER_FREQ 1193182) 157.2665 Tj
+0 -180.3739 Td
+(6616 #define TIMER_DIV\(x\) \(\(TIMER_FREQ+\(x\)/2\)/\(x\)\)) 231.5313 Tj
+0 -189.8672 Td
+(6617 ) 21.8426 Tj
+0 -199.3606 Td
+(6618 #define TIMER_MODE \(IO_TIMER1 + 3\) // timer mode po\
+rt) 275.2164 Tj
+0 -208.8539 Td
+(6619 #define TIMER_SEL0 0x00 // select counter 0) 244.6368 Tj
+0 -218.3473 Td
+(6620 #define TIMER_RATEGEN 0x04 // mode 2, rate generator) 270.8479 Tj
+0 -227.8407 Td
+(6621 #define TIMER_16BIT 0x30 // r/w counter 16 bits, LS\
+B first) 305.796 Tj
0 -237.334 Td
-(6622 .string "/init\\0") 104.844 Tj
-0 -246.827 Td
-(6623 ) 21.8426 Tj
-0 -256.321 Td
-(6624 # char *argv[] = { init, 0 };) 148.529 Tj
-0 -265.814 Td
-(6625 .p2align 2) 65.5277 Tj
-0 -275.307 Td
-(6626 argv:) 43.6851 Tj
-0 -284.801 Td
-(6627 .long init) 74.2647 Tj
-0 -294.294 Td
-(6628 .long 0) 61.1592 Tj
-0 -303.788 Td
-(6629 ) 21.8426 Tj
-0 -313.281 Td
-(6630 ) 21.8426 Tj
-0 -322.774 Td
-(6631 ) 21.8426 Tj
-0 -332.268 Td
+(6622 ) 21.8426 Tj
+0 -246.8274 Td
+(6623 void) 39.3166 Tj
+0 -256.3207 Td
+(6624 timer_init\(void\)) 91.7388 Tj
+0 -265.8141 Td
+(6625 {) 26.2111 Tj
+0 -275.3075 Td
+(6626 // Interrupt 100 times/sec.) 148.5295 Tj
+0 -284.8008 Td
+(6627 outb\(TIMER_MODE, TIMER_SEL0 | TIMER_RATEGEN | TIMER_16B\
+IT\);) 288.322 Tj
+0 -294.2942 Td
+(6628 outb\(IO_TIMER1, TIMER_DIV\(100\) % 256\);) 196.5831 Tj
+0 -303.7875 Td
+(6629 outb\(IO_TIMER1, TIMER_DIV\(100\) / 256\);) 196.5831 Tj
+0 -313.2809 Td
+(6630 pic_enable\(IRQ_TIMER\);) 126.6869 Tj
+0 -322.7743 Td
+(6631 }) 26.2111 Tj
+0 -332.2676 Td
(6632 ) 21.8426 Tj
0 -341.761 Td
(6633 ) 21.8426 Tj
-0 -351.254 Td
+0 -351.2543 Td
(6634 ) 21.8426 Tj
-0 -360.748 Td
+0 -360.7477 Td
(6635 ) 21.8426 Tj
-0 -370.241 Td
+0 -370.2411 Td
(6636 ) 21.8426 Tj
-0 -379.734 Td
+0 -379.7344 Td
(6637 ) 21.8426 Tj
-0 -389.228 Td
+0 -389.2278 Td
(6638 ) 21.8426 Tj
-0 -398.721 Td
+0 -398.7211 Td
(6639 ) 21.8426 Tj
-0 -408.214 Td
+0 -408.2145 Td
(6640 ) 21.8426 Tj
-0 -417.708 Td
+0 -417.7079 Td
(6641 ) 21.8426 Tj
-0 -427.201 Td
+0 -427.2012 Td
(6642 ) 21.8426 Tj
-0 -436.695 Td
+0 -436.6946 Td
(6643 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(6644 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(6645 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(6646 ) 21.8426 Tj
0 -474.668 Td
(6647 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(6648 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(6649 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 66) 34.9481 Tj
Q
Q
@@ -21730,111 +21711,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/init.c Page 1) 161.635 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/timer.c Page 2) 166.0035 Tj
0 -28.4801 Td
-(6650 // init: The initial user-level program) 192.215 Tj
+(6650 // Blank page) 78.6333 Tj
0 -37.9735 Td
(6651 ) 21.8426 Tj
0 -47.4668 Td
-(6652 #include "types.h") 100.476 Tj
+(6652 ) 21.8426 Tj
0 -56.9602 Td
-(6653 #include "stat.h") 96.1073 Tj
+(6653 ) 21.8426 Tj
0 -66.4535 Td
-(6654 #include "user.h") 96.1073 Tj
+(6654 ) 21.8426 Tj
0 -75.9469 Td
-(6655 #include "fcntl.h") 100.476 Tj
+(6655 ) 21.8426 Tj
0 -85.4403 Td
(6656 ) 21.8426 Tj
0 -94.9336 Td
-(6657 char *sh_args[] = { "sh", 0 };) 152.898 Tj
+(6657 ) 21.8426 Tj
0 -104.427 Td
(6658 ) 21.8426 Tj
-0 -113.92 Td
-(6659 int) 34.9481 Tj
-0 -123.414 Td
-(6660 main\(void\)) 65.5277 Tj
-0 -132.907 Td
-(6661 {) 26.2111 Tj
-0 -142.4 Td
-(6662 int pid, wpid;) 91.7388 Tj
-0 -151.894 Td
+0 -113.9203 Td
+(6659 ) 21.8426 Tj
+0 -123.4137 Td
+(6660 ) 21.8426 Tj
+0 -132.9071 Td
+(6661 ) 21.8426 Tj
+0 -142.4004 Td
+(6662 ) 21.8426 Tj
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0 -341.761 Td
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-0 -351.254 Td
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-0 -360.748 Td
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(6692 ) 21.8426 Tj
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(6693 ) 21.8426 Tj
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(6694 ) 21.8426 Tj
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(6695 ) 21.8426 Tj
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(6696 ) 21.8426 Tj
0 -474.668 Td
(6697 ) 21.8426 Tj
-0 -484.161 Td
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(6698 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(6699 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 66) 34.9481 Tj
Q
Q
@@ -21863,8 +21844,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -21879,111 +21859,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
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-(Aug 30 10:08 2007 xv6/usys.S Page 1) 161.635 Tj
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+(Sep 3 10:05 2008 xv6/initcode.S Page 1) 179.1091 Tj
0 -28.4801 Td
-(6700 #include "syscall.h") 109.213 Tj
+(6700 # Initial process execs /init.) 152.898 Tj
0 -37.9735 Td
-(6701 #include "traps.h") 100.476 Tj
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0 -47.4668 Td
-(6702 ) 21.8426 Tj
+(6702 #include "syscall.h") 109.2129 Tj
0 -56.9602 Td
-(6703 #define STUB\(name\) \\) 109.213 Tj
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0 -66.4535 Td
-(6704 .globl name; \\) 91.7388 Tj
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0 -75.9469 Td
-(6705 name: \\) 61.1592 Tj
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0 -85.4403 Td
-(6706 movl $SYS_ ## name, %eax; \\) 157.267 Tj
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0 -94.9336 Td
-(6707 int $T_SYSCALL; \\) 113.581 Tj
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0 -104.427 Td
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-0 -132.907 Td
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-0 -161.387 Td
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+(6718 jmp exit) 65.5277 Tj
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0 -237.334 Td
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-0 -303.788 Td
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(6730 ) 21.8426 Tj
-0 -322.774 Td
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(6731 ) 21.8426 Tj
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(6732 ) 21.8426 Tj
0 -341.761 Td
(6733 ) 21.8426 Tj
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(6734 ) 21.8426 Tj
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(6735 ) 21.8426 Tj
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(6736 ) 21.8426 Tj
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(6740 ) 21.8426 Tj
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(6741 ) 21.8426 Tj
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(6742 ) 21.8426 Tj
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(6743 ) 21.8426 Tj
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(6744 ) 21.8426 Tj
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(6745 ) 21.8426 Tj
-0 -465.175 Td
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(6746 ) 21.8426 Tj
0 -474.668 Td
(6747 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(6748 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(6749 ) 21.8426 Tj
-0 -522.135 Td
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(Sheet 67) 34.9481 Tj
Q
Q
@@ -21998,111 +21978,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
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+(6750 // init: The initial user-level program) 192.2146 Tj
0 -37.9735 Td
(6751 ) 21.8426 Tj
0 -47.4668 Td
-(6752 #include "types.h") 100.476 Tj
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-(6753 #include "user.h") 96.1073 Tj
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0 -75.9469 Td
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0 -94.9336 Td
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0 -341.761 Td
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-0 -436.695 Td
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(6795 ) 21.8426 Tj
-0 -465.175 Td
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0 -474.668 Td
-(6797 int type;) 69.8962 Tj
-0 -484.161 Td
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-0 -493.655 Td
-(6799 };) 30.5796 Tj
-0 -522.135 Td
+(6797 ) 21.8426 Tj
+0 -484.1614 Td
+(6798 ) 21.8426 Tj
+0 -493.6547 Td
+(6799 ) 21.8426 Tj
+0 -522.1348 Td
(Sheet 67) 34.9481 Tj
Q
Q
@@ -22131,8 +22111,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -22147,111 +22126,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
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-(6805 void) 39.3166 Tj
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0 -85.4403 Td
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0 -94.9336 Td
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-0 -123.414 Td
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-0 -132.907 Td
-(6811 struct listcmd *lcmd;) 122.318 Tj
-0 -142.4 Td
-(6812 struct pipecmd *pcmd;) 122.318 Tj
-0 -151.894 Td
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+(6819 STUB\(open\)) 65.5277 Tj
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+(6820 STUB\(mknod\)) 69.8962 Tj
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0 -237.334 Td
-(6822 case EXEC:) 74.2647 Tj
-0 -246.827 Td
-(6823 ecmd = \(struct execcmd*\)cmd;) 161.635 Tj
-0 -256.321 Td
-(6824 if\(ecmd->argv[0] == 0\)) 135.424 Tj
-0 -265.814 Td
-(6825 exit\(\);) 78.6333 Tj
-0 -275.307 Td
-(6826 exec\(ecmd->argv[0], ecmd->argv\);) 179.109 Tj
-0 -284.801 Td
-(6827 printf\(2, "exec %s failed\\n", ecmd->argv[0]\);) 235.9 Tj
-0 -294.294 Td
-(6828 break;) 65.5277 Tj
-0 -303.788 Td
-(6829 ) 21.8426 Tj
-0 -313.281 Td
-(6830 case REDIR:) 78.6333 Tj
-0 -322.774 Td
-(6831 rcmd = \(struct redircmd*\)cmd;) 166.004 Tj
-0 -332.268 Td
-(6832 close\(rcmd->fd\);) 109.213 Tj
+(6822 STUB\(fstat\)) 69.8962 Tj
+0 -246.8274 Td
+(6823 STUB\(link\)) 65.5277 Tj
+0 -256.3207 Td
+(6824 STUB\(mkdir\)) 69.8962 Tj
+0 -265.8141 Td
+(6825 STUB\(chdir\)) 69.8962 Tj
+0 -275.3075 Td
+(6826 STUB\(dup\)) 61.1592 Tj
+0 -284.8008 Td
+(6827 STUB\(getpid\)) 74.2647 Tj
+0 -294.2942 Td
+(6828 STUB\(sbrk\)) 65.5277 Tj
+0 -303.7875 Td
+(6829 STUB\(sleep\)) 69.8962 Tj
+0 -313.2809 Td
+(6830 ) 21.8426 Tj
+0 -322.7743 Td
+(6831 ) 21.8426 Tj
+0 -332.2676 Td
+(6832 ) 21.8426 Tj
0 -341.761 Td
-(6833 if\(open\(rcmd->file, rcmd->mode\) < 0\){) 200.952 Tj
-0 -351.254 Td
-(6834 printf\(2, "open %s failed\\n", rcmd->file\);) 231.531 Tj
-0 -360.748 Td
-(6835 exit\(\);) 78.6333 Tj
-0 -370.241 Td
-(6836 }) 43.6851 Tj
-0 -379.734 Td
-(6837 runcmd\(rcmd->cmd\);) 117.95 Tj
-0 -389.228 Td
-(6838 break;) 65.5277 Tj
-0 -398.721 Td
+(6833 ) 21.8426 Tj
+0 -351.2543 Td
+(6834 ) 21.8426 Tj
+0 -360.7477 Td
+(6835 ) 21.8426 Tj
+0 -370.2411 Td
+(6836 ) 21.8426 Tj
+0 -379.7344 Td
+(6837 ) 21.8426 Tj
+0 -389.2278 Td
+(6838 ) 21.8426 Tj
+0 -398.7211 Td
(6839 ) 21.8426 Tj
-0 -408.214 Td
-(6840 case LIST:) 74.2647 Tj
-0 -417.708 Td
-(6841 lcmd = \(struct listcmd*\)cmd;) 161.635 Tj
-0 -427.201 Td
-(6842 if\(fork1\(\) == 0\)) 109.213 Tj
-0 -436.695 Td
-(6843 runcmd\(lcmd->left\);) 131.055 Tj
-0 -446.188 Td
-(6844 wait\(\);) 69.8962 Tj
-0 -455.681 Td
-(6845 runcmd\(lcmd->right\);) 126.687 Tj
-0 -465.175 Td
-(6846 break;) 65.5277 Tj
+0 -408.2145 Td
+(6840 ) 21.8426 Tj
+0 -417.7079 Td
+(6841 ) 21.8426 Tj
+0 -427.2012 Td
+(6842 ) 21.8426 Tj
+0 -436.6946 Td
+(6843 ) 21.8426 Tj
+0 -446.1879 Td
+(6844 ) 21.8426 Tj
+0 -455.6813 Td
+(6845 ) 21.8426 Tj
+0 -465.1747 Td
+(6846 ) 21.8426 Tj
0 -474.668 Td
(6847 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(6848 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(6849 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 68) 34.9481 Tj
Q
Q
@@ -22266,111 +22245,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sh.c Page 3) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sh.c Page 1) 152.898 Tj
0 -28.4801 Td
-(6850 case PIPE:) 74.2647 Tj
+(6850 // Shell.) 61.1592 Tj
0 -37.9735 Td
-(6851 pcmd = \(struct pipecmd*\)cmd;) 161.635 Tj
+(6851 ) 21.8426 Tj
0 -47.4668 Td
-(6852 if\(pipe\(p\) < 0\)) 104.844 Tj
+(6852 #include "types.h") 100.4758 Tj
0 -56.9602 Td
-(6853 panic\("pipe"\);) 109.213 Tj
+(6853 #include "user.h") 96.1073 Tj
0 -66.4535 Td
-(6854 if\(fork1\(\) == 0\){) 113.581 Tj
+(6854 #include "fcntl.h") 100.4758 Tj
0 -75.9469 Td
-(6855 close\(1\);) 87.3703 Tj
+(6855 ) 21.8426 Tj
0 -85.4403 Td
-(6856 dup\(p[1]\);) 91.7388 Tj
+(6856 // Parsed command representation) 161.635 Tj
0 -94.9336 Td
-(6857 close\(p[0]\);) 100.476 Tj
+(6857 #define EXEC 1) 87.3703 Tj
0 -104.427 Td
-(6858 close\(p[1]\);) 100.476 Tj
-0 -113.92 Td
-(6859 runcmd\(pcmd->left\);) 131.055 Tj
-0 -123.414 Td
-(6860 }) 43.6851 Tj
-0 -132.907 Td
-(6861 if\(fork1\(\) == 0\){) 113.581 Tj
-0 -142.4 Td
-(6862 close\(0\);) 87.3703 Tj
-0 -151.894 Td
-(6863 dup\(p[0]\);) 91.7388 Tj
-0 -161.387 Td
-(6864 close\(p[0]\);) 100.476 Tj
-0 -170.88 Td
-(6865 close\(p[1]\);) 100.476 Tj
-0 -180.374 Td
-(6866 runcmd\(pcmd->right\);) 135.424 Tj
-0 -189.867 Td
-(6867 }) 43.6851 Tj
-0 -199.361 Td
-(6868 close\(p[0]\);) 91.7388 Tj
-0 -208.854 Td
-(6869 close\(p[1]\);) 91.7388 Tj
-0 -218.347 Td
-(6870 wait\(\);) 69.8962 Tj
-0 -227.841 Td
-(6871 wait\(\);) 69.8962 Tj
+(6858 #define REDIR 2) 87.3703 Tj
+0 -113.9203 Td
+(6859 #define PIPE 3) 87.3703 Tj
+0 -123.4137 Td
+(6860 #define LIST 4) 87.3703 Tj
+0 -132.9071 Td
+(6861 #define BACK 5) 87.3703 Tj
+0 -142.4004 Td
+(6862 ) 21.8426 Tj
+0 -151.8938 Td
+(6863 #define MAXARGS 10) 100.4758 Tj
+0 -161.3871 Td
+(6864 ) 21.8426 Tj
+0 -170.8805 Td
+(6865 struct cmd {) 74.2647 Tj
+0 -180.3739 Td
+(6866 int type;) 69.8962 Tj
+0 -189.8672 Td
+(6867 };) 30.5796 Tj
+0 -199.3606 Td
+(6868 ) 21.8426 Tj
+0 -208.8539 Td
+(6869 struct execcmd {) 91.7388 Tj
+0 -218.3473 Td
+(6870 int type;) 69.8962 Tj
+0 -227.8407 Td
+(6871 char *argv[MAXARGS];) 117.9499 Tj
0 -237.334 Td
-(6872 break;) 65.5277 Tj
-0 -246.827 Td
-(6873 ) 21.8426 Tj
-0 -256.321 Td
-(6874 case BACK:) 74.2647 Tj
-0 -265.814 Td
-(6875 bcmd = \(struct backcmd*\)cmd;) 161.635 Tj
-0 -275.307 Td
-(6876 if\(fork1\(\) == 0\)) 109.213 Tj
-0 -284.801 Td
-(6877 runcmd\(bcmd->cmd\);) 126.687 Tj
-0 -294.294 Td
-(6878 break;) 65.5277 Tj
-0 -303.788 Td
-(6879 }) 34.9481 Tj
-0 -313.281 Td
-(6880 exit\(\);) 61.1592 Tj
-0 -322.774 Td
-(6881 }) 26.2111 Tj
-0 -332.268 Td
-(6882 ) 21.8426 Tj
+(6872 char *eargv[MAXARGS];) 122.3184 Tj
+0 -246.8274 Td
+(6873 };) 30.5796 Tj
+0 -256.3207 Td
+(6874 ) 21.8426 Tj
+0 -265.8141 Td
+(6875 struct redircmd {) 96.1073 Tj
+0 -275.3075 Td
+(6876 int type;) 69.8962 Tj
+0 -284.8008 Td
+(6877 struct cmd *cmd;) 100.4758 Tj
+0 -294.2942 Td
+(6878 char *file;) 78.6333 Tj
+0 -303.7875 Td
+(6879 char *efile;) 83.0018 Tj
+0 -313.2809 Td
+(6880 int mode;) 69.8962 Tj
+0 -322.7743 Td
+(6881 int fd;) 61.1592 Tj
+0 -332.2676 Td
+(6882 };) 30.5796 Tj
0 -341.761 Td
-(6883 int) 34.9481 Tj
-0 -351.254 Td
-(6884 getcmd\(char *buf, int nbuf\)) 139.792 Tj
-0 -360.748 Td
-(6885 {) 26.2111 Tj
-0 -370.241 Td
-(6886 printf\(2, "$ "\);) 100.476 Tj
-0 -379.734 Td
-(6887 memset\(buf, 0, nbuf\);) 122.318 Tj
-0 -389.228 Td
-(6888 gets\(buf, nbuf\);) 100.476 Tj
-0 -398.721 Td
-(6889 if\(buf[0] == 0\) // EOF) 126.687 Tj
-0 -408.214 Td
-(6890 return -1;) 83.0018 Tj
-0 -417.708 Td
-(6891 return 0;) 69.8962 Tj
-0 -427.201 Td
-(6892 }) 26.2111 Tj
-0 -436.695 Td
-(6893 ) 21.8426 Tj
-0 -446.188 Td
-(6894 ) 21.8426 Tj
-0 -455.681 Td
+(6883 ) 21.8426 Tj
+0 -351.2543 Td
+(6884 struct pipecmd {) 91.7388 Tj
+0 -360.7477 Td
+(6885 int type;) 69.8962 Tj
+0 -370.2411 Td
+(6886 struct cmd *left;) 104.8443 Tj
+0 -379.7344 Td
+(6887 struct cmd *right;) 109.2129 Tj
+0 -389.2278 Td
+(6888 };) 30.5796 Tj
+0 -398.7211 Td
+(6889 ) 21.8426 Tj
+0 -408.2145 Td
+(6890 struct listcmd {) 91.7388 Tj
+0 -417.7079 Td
+(6891 int type;) 69.8962 Tj
+0 -427.2012 Td
+(6892 struct cmd *left;) 104.8443 Tj
+0 -436.6946 Td
+(6893 struct cmd *right;) 109.2129 Tj
+0 -446.1879 Td
+(6894 };) 30.5796 Tj
+0 -455.6813 Td
(6895 ) 21.8426 Tj
-0 -465.175 Td
-(6896 ) 21.8426 Tj
+0 -465.1747 Td
+(6896 struct backcmd {) 91.7388 Tj
0 -474.668 Td
-(6897 ) 21.8426 Tj
-0 -484.161 Td
-(6898 ) 21.8426 Tj
-0 -493.655 Td
-(6899 ) 21.8426 Tj
-0 -522.135 Td
+(6897 int type;) 69.8962 Tj
+0 -484.1614 Td
+(6898 struct cmd *cmd;) 100.4758 Tj
+0 -493.6547 Td
+(6899 };) 30.5796 Tj
+0 -522.1348 Td
(Sheet 68) 34.9481 Tj
Q
Q
@@ -22399,8 +22378,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -22415,111 +22393,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sh.c Page 4) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sh.c Page 2) 152.898 Tj
0 -28.4801 Td
-(6900 int) 34.9481 Tj
+(6900 int fork1\(void\); // Fork but panics on failure.) 231.5313 Tj
0 -37.9735 Td
-(6901 main\(void\)) 65.5277 Tj
+(6901 void panic\(char*\);) 100.4758 Tj
0 -47.4668 Td
-(6902 {) 26.2111 Tj
+(6902 struct cmd *parsecmd\(char*\);) 144.161 Tj
0 -56.9602 Td
-(6903 static char buf[100];) 122.318 Tj
+(6903 ) 21.8426 Tj
0 -66.4535 Td
-(6904 int fd;) 61.1592 Tj
+(6904 // Execute cmd. Never returns.) 157.2665 Tj
0 -75.9469 Td
-(6905 ) 21.8426 Tj
+(6905 void) 39.3166 Tj
0 -85.4403 Td
-(6906 // Assumes three file descriptors open.) 200.952 Tj
+(6906 runcmd\(struct cmd *cmd\)) 122.3184 Tj
0 -94.9336 Td
-(6907 while\(\(fd = open\("console", O_RDWR\)\) >= 0\){) 218.426 Tj
+(6907 {) 26.2111 Tj
0 -104.427 Td
-(6908 if\(fd >= 3\){) 91.7388 Tj
-0 -113.92 Td
-(6909 close\(fd\);) 91.7388 Tj
-0 -123.414 Td
-(6910 break;) 74.2647 Tj
-0 -132.907 Td
-(6911 }) 43.6851 Tj
-0 -142.4 Td
-(6912 }) 34.9481 Tj
-0 -151.894 Td
-(6913 ) 21.8426 Tj
-0 -161.387 Td
-(6914 // Read and run input commands.) 166.004 Tj
-0 -170.88 Td
-(6915 while\(getcmd\(buf, sizeof\(buf\)\) >= 0\){) 192.215 Tj
-0 -180.374 Td
-(6916 if\(fork1\(\) == 0\)) 109.213 Tj
-0 -189.867 Td
-(6917 runcmd\(parsecmd\(buf\)\);) 144.161 Tj
-0 -199.361 Td
-(6918 wait\(\);) 69.8962 Tj
-0 -208.854 Td
-(6919 }) 34.9481 Tj
-0 -218.347 Td
-(6920 exit\(\);) 61.1592 Tj
-0 -227.841 Td
-(6921 }) 26.2111 Tj
+(6908 int p[2];) 69.8962 Tj
+0 -113.9203 Td
+(6909 struct backcmd *bcmd;) 122.3184 Tj
+0 -123.4137 Td
+(6910 struct execcmd *ecmd;) 122.3184 Tj
+0 -132.9071 Td
+(6911 struct listcmd *lcmd;) 122.3184 Tj
+0 -142.4004 Td
+(6912 struct pipecmd *pcmd;) 122.3184 Tj
+0 -151.8938 Td
+(6913 struct redircmd *rcmd;) 126.6869 Tj
+0 -161.3871 Td
+(6914 ) 21.8426 Tj
+0 -170.8805 Td
+(6915 if\(cmd == 0\)) 83.0018 Tj
+0 -180.3739 Td
+(6916 exit\(\);) 69.8962 Tj
+0 -189.8672 Td
+(6917 ) 21.8426 Tj
+0 -199.3606 Td
+(6918 switch\(cmd->type\){) 109.2129 Tj
+0 -208.8539 Td
+(6919 default:) 65.5277 Tj
+0 -218.3473 Td
+(6920 panic\("runcmd"\);) 109.2129 Tj
+0 -227.8407 Td
+(6921 ) 21.8426 Tj
0 -237.334 Td
-(6922 ) 21.8426 Tj
-0 -246.827 Td
-(6923 void) 39.3166 Tj
-0 -256.321 Td
-(6924 panic\(char *s\)) 83.0018 Tj
-0 -265.814 Td
-(6925 {) 26.2111 Tj
-0 -275.307 Td
-(6926 printf\(2, "%s\\n", s\);) 122.318 Tj
-0 -284.801 Td
-(6927 exit\(\);) 61.1592 Tj
-0 -294.294 Td
-(6928 }) 26.2111 Tj
-0 -303.788 Td
+(6922 case EXEC:) 74.2647 Tj
+0 -246.8274 Td
+(6923 ecmd = \(struct execcmd*\)cmd;) 161.635 Tj
+0 -256.3207 Td
+(6924 if\(ecmd->argv[0] == 0\)) 135.4239 Tj
+0 -265.8141 Td
+(6925 exit\(\);) 78.6333 Tj
+0 -275.3075 Td
+(6926 exec\(ecmd->argv[0], ecmd->argv\);) 179.1091 Tj
+0 -284.8008 Td
+(6927 printf\(2, "exec %s failed\\n", ecmd->argv[0]\);) 235.8998 Tj
+0 -294.2942 Td
+(6928 break;) 65.5277 Tj
+0 -303.7875 Td
(6929 ) 21.8426 Tj
-0 -313.281 Td
-(6930 int) 34.9481 Tj
-0 -322.774 Td
-(6931 fork1\(void\)) 69.8962 Tj
-0 -332.268 Td
-(6932 {) 26.2111 Tj
+0 -313.2809 Td
+(6930 case REDIR:) 78.6333 Tj
+0 -322.7743 Td
+(6931 rcmd = \(struct redircmd*\)cmd;) 166.0035 Tj
+0 -332.2676 Td
+(6932 close\(rcmd->fd\);) 109.2129 Tj
0 -341.761 Td
-(6933 int pid;) 65.5277 Tj
-0 -351.254 Td
-(6934 ) 21.8426 Tj
-0 -360.748 Td
-(6935 pid = fork\(\);) 87.3703 Tj
-0 -370.241 Td
-(6936 if\(pid == -1\)) 87.3703 Tj
-0 -379.734 Td
-(6937 panic\("fork"\);) 100.476 Tj
-0 -389.228 Td
-(6938 return pid;) 78.6333 Tj
-0 -398.721 Td
-(6939 }) 26.2111 Tj
-0 -408.214 Td
-(6940 ) 21.8426 Tj
-0 -417.708 Td
-(6941 ) 21.8426 Tj
-0 -427.201 Td
-(6942 ) 21.8426 Tj
-0 -436.695 Td
-(6943 ) 21.8426 Tj
-0 -446.188 Td
-(6944 ) 21.8426 Tj
-0 -455.681 Td
-(6945 ) 21.8426 Tj
-0 -465.175 Td
-(6946 ) 21.8426 Tj
+(6933 if\(open\(rcmd->file, rcmd->mode\) < 0\){) 200.9517 Tj
+0 -351.2543 Td
+(6934 printf\(2, "open %s failed\\n", rcmd->file\);) 231.5313 Tj
+0 -360.7477 Td
+(6935 exit\(\);) 78.6333 Tj
+0 -370.2411 Td
+(6936 }) 43.6851 Tj
+0 -379.7344 Td
+(6937 runcmd\(rcmd->cmd\);) 117.9499 Tj
+0 -389.2278 Td
+(6938 break;) 65.5277 Tj
+0 -398.7211 Td
+(6939 ) 21.8426 Tj
+0 -408.2145 Td
+(6940 case LIST:) 74.2647 Tj
+0 -417.7079 Td
+(6941 lcmd = \(struct listcmd*\)cmd;) 161.635 Tj
+0 -427.2012 Td
+(6942 if\(fork1\(\) == 0\)) 109.2129 Tj
+0 -436.6946 Td
+(6943 runcmd\(lcmd->left\);) 131.0554 Tj
+0 -446.1879 Td
+(6944 wait\(\);) 69.8962 Tj
+0 -455.6813 Td
+(6945 runcmd\(lcmd->right\);) 126.6869 Tj
+0 -465.1747 Td
+(6946 break;) 65.5277 Tj
0 -474.668 Td
(6947 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(6948 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(6949 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 69) 34.9481 Tj
Q
Q
@@ -22534,112 +22512,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sh.c Page 5) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sh.c Page 3) 152.898 Tj
0 -28.4801 Td
-(6950 // Constructors) 87.3703 Tj
+(6950 case PIPE:) 74.2647 Tj
0 -37.9735 Td
-(6951 ) 21.8426 Tj
+(6951 pcmd = \(struct pipecmd*\)cmd;) 161.635 Tj
0 -47.4668 Td
-(6952 struct cmd*) 69.8962 Tj
+(6952 if\(pipe\(p\) < 0\)) 104.8443 Tj
0 -56.9602 Td
-(6953 execcmd\(void\)) 78.6333 Tj
+(6953 panic\("pipe"\);) 109.2129 Tj
0 -66.4535 Td
-(6954 {) 26.2111 Tj
+(6954 if\(fork1\(\) == 0\){) 113.5814 Tj
0 -75.9469 Td
-(6955 struct execcmd *cmd;) 117.95 Tj
+(6955 close\(1\);) 87.3703 Tj
0 -85.4403 Td
-(6956 ) 21.8426 Tj
+(6956 dup\(p[1]\);) 91.7388 Tj
0 -94.9336 Td
-(6957 cmd = malloc\(sizeof\(*cmd\)\);) 148.529 Tj
+(6957 close\(p[0]\);) 100.4758 Tj
0 -104.427 Td
-(6958 memset\(cmd, 0, sizeof\(*cmd\)\);) 157.267 Tj
-0 -113.92 Td
-(6959 cmd->type = EXEC;) 104.844 Tj
-0 -123.414 Td
-(6960 return \(struct cmd*\)cmd;) 135.424 Tj
-0 -132.907 Td
-(6961 }) 26.2111 Tj
-0 -142.4 Td
-(6962 ) 21.8426 Tj
-0 -151.894 Td
-(6963 struct cmd*) 69.8962 Tj
-0 -161.387 Td
-(6964 redircmd\(struct cmd *subcmd, char *file, char *efile, int\
- mode, int fd\)) 332.007 Tj
-0 -170.88 Td
-(6965 {) 26.2111 Tj
-0 -180.374 Td
-(6966 struct redircmd *cmd;) 122.318 Tj
-0 -189.867 Td
-(6967 ) 21.8426 Tj
-0 -199.361 Td
-(6968 cmd = malloc\(sizeof\(*cmd\)\);) 148.529 Tj
-0 -208.854 Td
-(6969 memset\(cmd, 0, sizeof\(*cmd\)\);) 157.267 Tj
-0 -218.347 Td
-(6970 cmd->type = REDIR;) 109.213 Tj
-0 -227.841 Td
-(6971 cmd->cmd = subcmd;) 109.213 Tj
+(6958 close\(p[1]\);) 100.4758 Tj
+0 -113.9203 Td
+(6959 runcmd\(pcmd->left\);) 131.0554 Tj
+0 -123.4137 Td
+(6960 }) 43.6851 Tj
+0 -132.9071 Td
+(6961 if\(fork1\(\) == 0\){) 113.5814 Tj
+0 -142.4004 Td
+(6962 close\(0\);) 87.3703 Tj
+0 -151.8938 Td
+(6963 dup\(p[0]\);) 91.7388 Tj
+0 -161.3871 Td
+(6964 close\(p[0]\);) 100.4758 Tj
+0 -170.8805 Td
+(6965 close\(p[1]\);) 100.4758 Tj
+0 -180.3739 Td
+(6966 runcmd\(pcmd->right\);) 135.4239 Tj
+0 -189.8672 Td
+(6967 }) 43.6851 Tj
+0 -199.3606 Td
+(6968 close\(p[0]\);) 91.7388 Tj
+0 -208.8539 Td
+(6969 close\(p[1]\);) 91.7388 Tj
+0 -218.3473 Td
+(6970 wait\(\);) 69.8962 Tj
+0 -227.8407 Td
+(6971 wait\(\);) 69.8962 Tj
0 -237.334 Td
-(6972 cmd->file = file;) 104.844 Tj
-0 -246.827 Td
-(6973 cmd->efile = efile;) 113.581 Tj
-0 -256.321 Td
-(6974 cmd->mode = mode;) 104.844 Tj
-0 -265.814 Td
-(6975 cmd->fd = fd;) 87.3703 Tj
-0 -275.307 Td
-(6976 return \(struct cmd*\)cmd;) 135.424 Tj
-0 -284.801 Td
-(6977 }) 26.2111 Tj
-0 -294.294 Td
-(6978 ) 21.8426 Tj
-0 -303.788 Td
-(6979 struct cmd*) 69.8962 Tj
-0 -313.281 Td
-(6980 pipecmd\(struct cmd *left, struct cmd *right\)) 214.057 Tj
-0 -322.774 Td
-(6981 {) 26.2111 Tj
-0 -332.268 Td
-(6982 struct pipecmd *cmd;) 117.95 Tj
+(6972 break;) 65.5277 Tj
+0 -246.8274 Td
+(6973 ) 21.8426 Tj
+0 -256.3207 Td
+(6974 case BACK:) 74.2647 Tj
+0 -265.8141 Td
+(6975 bcmd = \(struct backcmd*\)cmd;) 161.635 Tj
+0 -275.3075 Td
+(6976 if\(fork1\(\) == 0\)) 109.2129 Tj
+0 -284.8008 Td
+(6977 runcmd\(bcmd->cmd\);) 126.6869 Tj
+0 -294.2942 Td
+(6978 break;) 65.5277 Tj
+0 -303.7875 Td
+(6979 }) 34.9481 Tj
+0 -313.2809 Td
+(6980 exit\(\);) 61.1592 Tj
+0 -322.7743 Td
+(6981 }) 26.2111 Tj
+0 -332.2676 Td
+(6982 ) 21.8426 Tj
0 -341.761 Td
-(6983 ) 21.8426 Tj
-0 -351.254 Td
-(6984 cmd = malloc\(sizeof\(*cmd\)\);) 148.529 Tj
-0 -360.748 Td
-(6985 memset\(cmd, 0, sizeof\(*cmd\)\);) 157.267 Tj
-0 -370.241 Td
-(6986 cmd->type = PIPE;) 104.844 Tj
-0 -379.734 Td
-(6987 cmd->left = left;) 104.844 Tj
-0 -389.228 Td
-(6988 cmd->right = right;) 113.581 Tj
-0 -398.721 Td
-(6989 return \(struct cmd*\)cmd;) 135.424 Tj
-0 -408.214 Td
-(6990 }) 26.2111 Tj
-0 -417.708 Td
-(6991 ) 21.8426 Tj
-0 -427.201 Td
-(6992 ) 21.8426 Tj
-0 -436.695 Td
+(6983 int) 34.9481 Tj
+0 -351.2543 Td
+(6984 getcmd\(char *buf, int nbuf\)) 139.7925 Tj
+0 -360.7477 Td
+(6985 {) 26.2111 Tj
+0 -370.2411 Td
+(6986 printf\(2, "$ "\);) 100.4758 Tj
+0 -379.7344 Td
+(6987 memset\(buf, 0, nbuf\);) 122.3184 Tj
+0 -389.2278 Td
+(6988 gets\(buf, nbuf\);) 100.4758 Tj
+0 -398.7211 Td
+(6989 if\(buf[0] == 0\) // EOF) 126.6869 Tj
+0 -408.2145 Td
+(6990 return -1;) 83.0018 Tj
+0 -417.7079 Td
+(6991 return 0;) 69.8962 Tj
+0 -427.2012 Td
+(6992 }) 26.2111 Tj
+0 -436.6946 Td
(6993 ) 21.8426 Tj
-0 -446.188 Td
+0 -446.1879 Td
(6994 ) 21.8426 Tj
-0 -455.681 Td
+0 -455.6813 Td
(6995 ) 21.8426 Tj
-0 -465.175 Td
+0 -465.1747 Td
(6996 ) 21.8426 Tj
0 -474.668 Td
(6997 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(6998 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(6999 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 69) 34.9481 Tj
Q
Q
@@ -22668,8 +22645,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -22684,111 +22660,112 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sh.c Page 6) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sh.c Page 4) 152.898 Tj
0 -28.4801 Td
-(7000 struct cmd*) 69.8962 Tj
+(7000 int) 34.9481 Tj
0 -37.9735 Td
-(7001 listcmd\(struct cmd *left, struct cmd *right\)) 214.057 Tj
+(7001 main\(void\)) 65.5277 Tj
0 -47.4668 Td
(7002 {) 26.2111 Tj
0 -56.9602 Td
-(7003 struct listcmd *cmd;) 117.95 Tj
+(7003 static char buf[100];) 122.3184 Tj
0 -66.4535 Td
-(7004 ) 21.8426 Tj
+(7004 int fd;) 61.1592 Tj
0 -75.9469 Td
-(7005 cmd = malloc\(sizeof\(*cmd\)\);) 148.529 Tj
+(7005 ) 21.8426 Tj
0 -85.4403 Td
-(7006 memset\(cmd, 0, sizeof\(*cmd\)\);) 157.267 Tj
+(7006 // Assumes three file descriptors open.) 200.9517 Tj
0 -94.9336 Td
-(7007 cmd->type = LIST;) 104.844 Tj
+(7007 while\(\(fd = open\("console", O_RDWR\)\) >= 0\){) 218.4257 Tj
0 -104.427 Td
-(7008 cmd->left = left;) 104.844 Tj
-0 -113.92 Td
-(7009 cmd->right = right;) 113.581 Tj
-0 -123.414 Td
-(7010 return \(struct cmd*\)cmd;) 135.424 Tj
-0 -132.907 Td
-(7011 }) 26.2111 Tj
-0 -142.4 Td
-(7012 ) 21.8426 Tj
-0 -151.894 Td
-(7013 struct cmd*) 69.8962 Tj
-0 -161.387 Td
-(7014 backcmd\(struct cmd *subcmd\)) 139.792 Tj
-0 -170.88 Td
-(7015 {) 26.2111 Tj
-0 -180.374 Td
-(7016 struct backcmd *cmd;) 117.95 Tj
-0 -189.867 Td
-(7017 ) 21.8426 Tj
-0 -199.361 Td
-(7018 cmd = malloc\(sizeof\(*cmd\)\);) 148.529 Tj
-0 -208.854 Td
-(7019 memset\(cmd, 0, sizeof\(*cmd\)\);) 157.267 Tj
-0 -218.347 Td
-(7020 cmd->type = BACK;) 104.844 Tj
-0 -227.841 Td
-(7021 cmd->cmd = subcmd;) 109.213 Tj
+(7008 if\(fd >= 3\){) 91.7388 Tj
+0 -113.9203 Td
+(7009 close\(fd\);) 91.7388 Tj
+0 -123.4137 Td
+(7010 break;) 74.2647 Tj
+0 -132.9071 Td
+(7011 }) 43.6851 Tj
+0 -142.4004 Td
+(7012 }) 34.9481 Tj
+0 -151.8938 Td
+(7013 ) 21.8426 Tj
+0 -161.3871 Td
+(7014 // Read and run input commands.) 166.0035 Tj
+0 -170.8805 Td
+(7015 while\(getcmd\(buf, sizeof\(buf\)\) >= 0\){) 192.2146 Tj
+0 -180.3739 Td
+(7016 if\(buf[0] == 'c' && buf[1] == 'd' && buf[2] == ' '\){) 266.4794 Tj
+0 -189.8672 Td
+(7017 // Clumsy but will have to do for now.) 214.0572 Tj
+0 -199.3606 Td
+(7018 // Chdir has no effect on the parent if run in the c\
+hild.) 297.059 Tj
+0 -208.8539 Td
+(7019 buf[strlen\(buf\)-1] = 0; // chop \\n) 200.9517 Tj
+0 -218.3473 Td
+(7020 if\(chdir\(buf+3\) < 0\)) 135.4239 Tj
+0 -227.8407 Td
+(7021 printf\(2, "cannot cd %s\\n", buf+3\);) 209.6887 Tj
0 -237.334 Td
-(7022 return \(struct cmd*\)cmd;) 135.424 Tj
-0 -246.827 Td
-(7023 }) 26.2111 Tj
-0 -256.321 Td
-(7024 ) 21.8426 Tj
-0 -265.814 Td
-(7025 ) 21.8426 Tj
-0 -275.307 Td
-(7026 ) 21.8426 Tj
-0 -284.801 Td
-(7027 ) 21.8426 Tj
-0 -294.294 Td
-(7028 ) 21.8426 Tj
-0 -303.788 Td
-(7029 ) 21.8426 Tj
-0 -313.281 Td
+(7022 continue;) 87.3703 Tj
+0 -246.8274 Td
+(7023 }) 43.6851 Tj
+0 -256.3207 Td
+(7024 if\(fork1\(\) == 0\)) 109.2129 Tj
+0 -265.8141 Td
+(7025 runcmd\(parsecmd\(buf\)\);) 144.161 Tj
+0 -275.3075 Td
+(7026 wait\(\);) 69.8962 Tj
+0 -284.8008 Td
+(7027 }) 34.9481 Tj
+0 -294.2942 Td
+(7028 exit\(\);) 61.1592 Tj
+0 -303.7875 Td
+(7029 }) 26.2111 Tj
+0 -313.2809 Td
(7030 ) 21.8426 Tj
-0 -322.774 Td
-(7031 ) 21.8426 Tj
-0 -332.268 Td
-(7032 ) 21.8426 Tj
+0 -322.7743 Td
+(7031 void) 39.3166 Tj
+0 -332.2676 Td
+(7032 panic\(char *s\)) 83.0018 Tj
0 -341.761 Td
-(7033 ) 21.8426 Tj
-0 -351.254 Td
-(7034 ) 21.8426 Tj
-0 -360.748 Td
-(7035 ) 21.8426 Tj
-0 -370.241 Td
-(7036 ) 21.8426 Tj
-0 -379.734 Td
+(7033 {) 26.2111 Tj
+0 -351.2543 Td
+(7034 printf\(2, "%s\\n", s\);) 122.3184 Tj
+0 -360.7477 Td
+(7035 exit\(\);) 61.1592 Tj
+0 -370.2411 Td
+(7036 }) 26.2111 Tj
+0 -379.7344 Td
(7037 ) 21.8426 Tj
-0 -389.228 Td
-(7038 ) 21.8426 Tj
-0 -398.721 Td
-(7039 ) 21.8426 Tj
-0 -408.214 Td
-(7040 ) 21.8426 Tj
-0 -417.708 Td
-(7041 ) 21.8426 Tj
-0 -427.201 Td
+0 -389.2278 Td
+(7038 int) 34.9481 Tj
+0 -398.7211 Td
+(7039 fork1\(void\)) 69.8962 Tj
+0 -408.2145 Td
+(7040 {) 26.2111 Tj
+0 -417.7079 Td
+(7041 int pid;) 65.5277 Tj
+0 -427.2012 Td
(7042 ) 21.8426 Tj
-0 -436.695 Td
-(7043 ) 21.8426 Tj
-0 -446.188 Td
-(7044 ) 21.8426 Tj
-0 -455.681 Td
-(7045 ) 21.8426 Tj
-0 -465.175 Td
-(7046 ) 21.8426 Tj
+0 -436.6946 Td
+(7043 pid = fork\(\);) 87.3703 Tj
+0 -446.1879 Td
+(7044 if\(pid == -1\)) 87.3703 Tj
+0 -455.6813 Td
+(7045 panic\("fork"\);) 100.4758 Tj
+0 -465.1747 Td
+(7046 return pid;) 78.6333 Tj
0 -474.668 Td
-(7047 ) 21.8426 Tj
-0 -484.161 Td
+(7047 }) 26.2111 Tj
+0 -484.1614 Td
(7048 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(7049 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 70) 34.9481 Tj
Q
Q
@@ -22803,112 +22780,112 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sh.c Page 7) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sh.c Page 5) 152.898 Tj
0 -28.4801 Td
-(7050 // Parsing) 65.5277 Tj
+(7050 // Constructors) 87.3703 Tj
0 -37.9735 Td
(7051 ) 21.8426 Tj
0 -47.4668 Td
-(7052 char whitespace[] = " \\t\\r\\n\\v";) 161.635 Tj
+(7052 struct cmd*) 69.8962 Tj
0 -56.9602 Td
-(7053 char symbols[] = "<|>&;\(\)";) 139.792 Tj
+(7053 execcmd\(void\)) 78.6333 Tj
0 -66.4535 Td
-(7054 ) 21.8426 Tj
+(7054 {) 26.2111 Tj
0 -75.9469 Td
-(7055 int) 34.9481 Tj
+(7055 struct execcmd *cmd;) 117.9499 Tj
0 -85.4403 Td
-(7056 gettoken\(char **ps, char *es, char **q, char **eq\)) 240.268 Tj
+(7056 ) 21.8426 Tj
0 -94.9336 Td
-(7057 {) 26.2111 Tj
+(7057 cmd = malloc\(sizeof\(*cmd\)\);) 148.5295 Tj
0 -104.427 Td
-(7058 char *s;) 65.5277 Tj
-0 -113.92 Td
-(7059 int ret;) 65.5277 Tj
-0 -123.414 Td
-(7060 ) 21.8426 Tj
-0 -132.907 Td
-(7061 s = *ps;) 65.5277 Tj
-0 -142.4 Td
-(7062 while\(s < es && strchr\(whitespace, *s\)\)) 200.952 Tj
-0 -151.894 Td
-(7063 s++;) 56.7907 Tj
-0 -161.387 Td
-(7064 if\(q\)) 52.4222 Tj
-0 -170.88 Td
-(7065 *q = s;) 69.8962 Tj
-0 -180.374 Td
-(7066 ret = *s;) 69.8962 Tj
-0 -189.867 Td
-(7067 switch\(*s\){) 78.6333 Tj
-0 -199.361 Td
-(7068 case 0:) 61.1592 Tj
-0 -208.854 Td
-(7069 break;) 65.5277 Tj
-0 -218.347 Td
-(7070 case '|':) 69.8962 Tj
-0 -227.841 Td
-(7071 case '\(':) 69.8962 Tj
+(7058 memset\(cmd, 0, sizeof\(*cmd\)\);) 157.2665 Tj
+0 -113.9203 Td
+(7059 cmd->type = EXEC;) 104.8443 Tj
+0 -123.4137 Td
+(7060 return \(struct cmd*\)cmd;) 135.4239 Tj
+0 -132.9071 Td
+(7061 }) 26.2111 Tj
+0 -142.4004 Td
+(7062 ) 21.8426 Tj
+0 -151.8938 Td
+(7063 struct cmd*) 69.8962 Tj
+0 -161.3871 Td
+(7064 redircmd\(struct cmd *subcmd, char *file, char *efile, int\
+ mode, int fd\)) 332.0071 Tj
+0 -170.8805 Td
+(7065 {) 26.2111 Tj
+0 -180.3739 Td
+(7066 struct redircmd *cmd;) 122.3184 Tj
+0 -189.8672 Td
+(7067 ) 21.8426 Tj
+0 -199.3606 Td
+(7068 cmd = malloc\(sizeof\(*cmd\)\);) 148.5295 Tj
+0 -208.8539 Td
+(7069 memset\(cmd, 0, sizeof\(*cmd\)\);) 157.2665 Tj
+0 -218.3473 Td
+(7070 cmd->type = REDIR;) 109.2129 Tj
+0 -227.8407 Td
+(7071 cmd->cmd = subcmd;) 109.2129 Tj
0 -237.334 Td
-(7072 case '\)':) 69.8962 Tj
-0 -246.827 Td
-(7073 case ';':) 69.8962 Tj
-0 -256.321 Td
-(7074 case '&':) 69.8962 Tj
-0 -265.814 Td
-(7075 case '<':) 69.8962 Tj
-0 -275.307 Td
-(7076 s++;) 56.7907 Tj
-0 -284.801 Td
-(7077 break;) 65.5277 Tj
-0 -294.294 Td
-(7078 case '>':) 69.8962 Tj
-0 -303.788 Td
-(7079 s++;) 56.7907 Tj
-0 -313.281 Td
-(7080 if\(*s == '>'\){) 100.476 Tj
-0 -322.774 Td
-(7081 ret = '+';) 91.7388 Tj
-0 -332.268 Td
-(7082 s++;) 65.5277 Tj
+(7072 cmd->file = file;) 104.8443 Tj
+0 -246.8274 Td
+(7073 cmd->efile = efile;) 113.5814 Tj
+0 -256.3207 Td
+(7074 cmd->mode = mode;) 104.8443 Tj
+0 -265.8141 Td
+(7075 cmd->fd = fd;) 87.3703 Tj
+0 -275.3075 Td
+(7076 return \(struct cmd*\)cmd;) 135.4239 Tj
+0 -284.8008 Td
+(7077 }) 26.2111 Tj
+0 -294.2942 Td
+(7078 ) 21.8426 Tj
+0 -303.7875 Td
+(7079 struct cmd*) 69.8962 Tj
+0 -313.2809 Td
+(7080 pipecmd\(struct cmd *left, struct cmd *right\)) 214.0572 Tj
+0 -322.7743 Td
+(7081 {) 26.2111 Tj
+0 -332.2676 Td
+(7082 struct pipecmd *cmd;) 117.9499 Tj
0 -341.761 Td
-(7083 }) 43.6851 Tj
-0 -351.254 Td
-(7084 break;) 65.5277 Tj
-0 -360.748 Td
-(7085 default:) 65.5277 Tj
-0 -370.241 Td
-(7086 ret = 'a';) 83.0018 Tj
-0 -379.734 Td
-(7087 while\(s < es && !strchr\(whitespace, *s\) && !strchr\(\
-symbols, *s\)\)) 318.902 Tj
-0 -389.228 Td
-(7088 s++;) 65.5277 Tj
-0 -398.721 Td
-(7089 break;) 65.5277 Tj
-0 -408.214 Td
-(7090 }) 34.9481 Tj
-0 -417.708 Td
-(7091 if\(eq\)) 56.7907 Tj
-0 -427.201 Td
-(7092 *eq = s;) 74.2647 Tj
-0 -436.695 Td
+(7083 ) 21.8426 Tj
+0 -351.2543 Td
+(7084 cmd = malloc\(sizeof\(*cmd\)\);) 148.5295 Tj
+0 -360.7477 Td
+(7085 memset\(cmd, 0, sizeof\(*cmd\)\);) 157.2665 Tj
+0 -370.2411 Td
+(7086 cmd->type = PIPE;) 104.8443 Tj
+0 -379.7344 Td
+(7087 cmd->left = left;) 104.8443 Tj
+0 -389.2278 Td
+(7088 cmd->right = right;) 113.5814 Tj
+0 -398.7211 Td
+(7089 return \(struct cmd*\)cmd;) 135.4239 Tj
+0 -408.2145 Td
+(7090 }) 26.2111 Tj
+0 -417.7079 Td
+(7091 ) 21.8426 Tj
+0 -427.2012 Td
+(7092 ) 21.8426 Tj
+0 -436.6946 Td
(7093 ) 21.8426 Tj
-0 -446.188 Td
-(7094 while\(s < es && strchr\(whitespace, *s\)\)) 200.952 Tj
-0 -455.681 Td
-(7095 s++;) 56.7907 Tj
-0 -465.175 Td
-(7096 *ps = s;) 65.5277 Tj
+0 -446.1879 Td
+(7094 ) 21.8426 Tj
+0 -455.6813 Td
+(7095 ) 21.8426 Tj
+0 -465.1747 Td
+(7096 ) 21.8426 Tj
0 -474.668 Td
-(7097 return ret;) 78.6333 Tj
-0 -484.161 Td
-(7098 }) 26.2111 Tj
-0 -493.655 Td
+(7097 ) 21.8426 Tj
+0 -484.1614 Td
+(7098 ) 21.8426 Tj
+0 -493.6547 Td
(7099 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 70) 34.9481 Tj
Q
Q
@@ -22937,8 +22914,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -22953,111 +22929,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sh.c Page 8) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sh.c Page 6) 152.898 Tj
0 -28.4801 Td
-(7100 int) 34.9481 Tj
+(7100 struct cmd*) 69.8962 Tj
0 -37.9735 Td
-(7101 peek\(char **ps, char *es, char *toks\)) 183.478 Tj
+(7101 listcmd\(struct cmd *left, struct cmd *right\)) 214.0572 Tj
0 -47.4668 Td
(7102 {) 26.2111 Tj
0 -56.9602 Td
-(7103 char *s;) 65.5277 Tj
+(7103 struct listcmd *cmd;) 117.9499 Tj
0 -66.4535 Td
(7104 ) 21.8426 Tj
0 -75.9469 Td
-(7105 s = *ps;) 65.5277 Tj
+(7105 cmd = malloc\(sizeof\(*cmd\)\);) 148.5295 Tj
0 -85.4403 Td
-(7106 while\(s < es && strchr\(whitespace, *s\)\)) 200.952 Tj
+(7106 memset\(cmd, 0, sizeof\(*cmd\)\);) 157.2665 Tj
0 -94.9336 Td
-(7107 s++;) 56.7907 Tj
+(7107 cmd->type = LIST;) 104.8443 Tj
0 -104.427 Td
-(7108 *ps = s;) 65.5277 Tj
-0 -113.92 Td
-(7109 return *s && strchr\(toks, *s\);) 161.635 Tj
-0 -123.414 Td
-(7110 }) 26.2111 Tj
-0 -132.907 Td
-(7111 ) 21.8426 Tj
-0 -142.4 Td
-(7112 struct cmd *parseline\(char**, char*\);) 183.478 Tj
-0 -151.894 Td
-(7113 struct cmd *parsepipe\(char**, char*\);) 183.478 Tj
-0 -161.387 Td
-(7114 struct cmd *parseexec\(char**, char*\);) 183.478 Tj
-0 -170.88 Td
-(7115 struct cmd *nulterminate\(struct cmd*\);) 187.846 Tj
-0 -180.374 Td
-(7116 ) 21.8426 Tj
-0 -189.867 Td
-(7117 struct cmd*) 69.8962 Tj
-0 -199.361 Td
-(7118 parsecmd\(char *s\)) 96.1073 Tj
-0 -208.854 Td
-(7119 {) 26.2111 Tj
-0 -218.347 Td
-(7120 char *es;) 69.8962 Tj
-0 -227.841 Td
-(7121 struct cmd *cmd;) 100.476 Tj
+(7108 cmd->left = left;) 104.8443 Tj
+0 -113.9203 Td
+(7109 cmd->right = right;) 113.5814 Tj
+0 -123.4137 Td
+(7110 return \(struct cmd*\)cmd;) 135.4239 Tj
+0 -132.9071 Td
+(7111 }) 26.2111 Tj
+0 -142.4004 Td
+(7112 ) 21.8426 Tj
+0 -151.8938 Td
+(7113 struct cmd*) 69.8962 Tj
+0 -161.3871 Td
+(7114 backcmd\(struct cmd *subcmd\)) 139.7925 Tj
+0 -170.8805 Td
+(7115 {) 26.2111 Tj
+0 -180.3739 Td
+(7116 struct backcmd *cmd;) 117.9499 Tj
+0 -189.8672 Td
+(7117 ) 21.8426 Tj
+0 -199.3606 Td
+(7118 cmd = malloc\(sizeof\(*cmd\)\);) 148.5295 Tj
+0 -208.8539 Td
+(7119 memset\(cmd, 0, sizeof\(*cmd\)\);) 157.2665 Tj
+0 -218.3473 Td
+(7120 cmd->type = BACK;) 104.8443 Tj
+0 -227.8407 Td
+(7121 cmd->cmd = subcmd;) 109.2129 Tj
0 -237.334 Td
-(7122 ) 21.8426 Tj
-0 -246.827 Td
-(7123 es = s + strlen\(s\);) 113.581 Tj
-0 -256.321 Td
-(7124 cmd = parseline\(&s, es\);) 135.424 Tj
-0 -265.814 Td
-(7125 peek\(&s, es, ""\);) 104.844 Tj
-0 -275.307 Td
-(7126 if\(s != es\){) 83.0018 Tj
-0 -284.801 Td
-(7127 printf\(2, "leftovers: %s\\n", s\);) 179.109 Tj
-0 -294.294 Td
-(7128 panic\("syntax"\);) 109.213 Tj
-0 -303.788 Td
-(7129 }) 34.9481 Tj
-0 -313.281 Td
-(7130 nulterminate\(cmd\);) 109.213 Tj
-0 -322.774 Td
-(7131 return cmd;) 78.6333 Tj
-0 -332.268 Td
-(7132 }) 26.2111 Tj
+(7122 return \(struct cmd*\)cmd;) 135.4239 Tj
+0 -246.8274 Td
+(7123 }) 26.2111 Tj
+0 -256.3207 Td
+(7124 ) 21.8426 Tj
+0 -265.8141 Td
+(7125 ) 21.8426 Tj
+0 -275.3075 Td
+(7126 ) 21.8426 Tj
+0 -284.8008 Td
+(7127 ) 21.8426 Tj
+0 -294.2942 Td
+(7128 ) 21.8426 Tj
+0 -303.7875 Td
+(7129 ) 21.8426 Tj
+0 -313.2809 Td
+(7130 ) 21.8426 Tj
+0 -322.7743 Td
+(7131 ) 21.8426 Tj
+0 -332.2676 Td
+(7132 ) 21.8426 Tj
0 -341.761 Td
(7133 ) 21.8426 Tj
-0 -351.254 Td
-(7134 struct cmd*) 69.8962 Tj
-0 -360.748 Td
-(7135 parseline\(char **ps, char *es\)) 152.898 Tj
-0 -370.241 Td
-(7136 {) 26.2111 Tj
-0 -379.734 Td
-(7137 struct cmd *cmd;) 100.476 Tj
-0 -389.228 Td
+0 -351.2543 Td
+(7134 ) 21.8426 Tj
+0 -360.7477 Td
+(7135 ) 21.8426 Tj
+0 -370.2411 Td
+(7136 ) 21.8426 Tj
+0 -379.7344 Td
+(7137 ) 21.8426 Tj
+0 -389.2278 Td
(7138 ) 21.8426 Tj
-0 -398.721 Td
-(7139 cmd = parsepipe\(ps, es\);) 135.424 Tj
-0 -408.214 Td
-(7140 while\(peek\(ps, es, "&"\)\){) 139.792 Tj
-0 -417.708 Td
-(7141 gettoken\(ps, es, 0, 0\);) 139.792 Tj
-0 -427.201 Td
-(7142 cmd = backcmd\(cmd\);) 122.318 Tj
-0 -436.695 Td
-(7143 }) 34.9481 Tj
-0 -446.188 Td
-(7144 if\(peek\(ps, es, ";"\)\){) 126.687 Tj
-0 -455.681 Td
-(7145 gettoken\(ps, es, 0, 0\);) 139.792 Tj
-0 -465.175 Td
-(7146 cmd = listcmd\(cmd, parseline\(ps, es\)\);) 205.32 Tj
+0 -398.7211 Td
+(7139 ) 21.8426 Tj
+0 -408.2145 Td
+(7140 ) 21.8426 Tj
+0 -417.7079 Td
+(7141 ) 21.8426 Tj
+0 -427.2012 Td
+(7142 ) 21.8426 Tj
+0 -436.6946 Td
+(7143 ) 21.8426 Tj
+0 -446.1879 Td
+(7144 ) 21.8426 Tj
+0 -455.6813 Td
+(7145 ) 21.8426 Tj
+0 -465.1747 Td
+(7146 ) 21.8426 Tj
0 -474.668 Td
-(7147 }) 34.9481 Tj
-0 -484.161 Td
-(7148 return cmd;) 78.6333 Tj
-0 -493.655 Td
-(7149 }) 26.2111 Tj
-0 -522.135 Td
+(7147 ) 21.8426 Tj
+0 -484.1614 Td
+(7148 ) 21.8426 Tj
+0 -493.6547 Td
+(7149 ) 21.8426 Tj
+0 -522.1348 Td
(Sheet 71) 34.9481 Tj
Q
Q
@@ -23072,111 +23048,112 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sh.c Page 9) 152.898 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sh.c Page 7) 152.898 Tj
0 -28.4801 Td
-(7150 struct cmd*) 69.8962 Tj
+(7150 // Parsing) 65.5277 Tj
0 -37.9735 Td
-(7151 parsepipe\(char **ps, char *es\)) 152.898 Tj
+(7151 ) 21.8426 Tj
0 -47.4668 Td
-(7152 {) 26.2111 Tj
+(7152 char whitespace[] = " \\t\\r\\n\\v";) 161.635 Tj
0 -56.9602 Td
-(7153 struct cmd *cmd;) 100.476 Tj
+(7153 char symbols[] = "<|>&;\(\)";) 139.7925 Tj
0 -66.4535 Td
(7154 ) 21.8426 Tj
0 -75.9469 Td
-(7155 cmd = parseexec\(ps, es\);) 135.424 Tj
+(7155 int) 34.9481 Tj
0 -85.4403 Td
-(7156 if\(peek\(ps, es, "|"\)\){) 126.687 Tj
+(7156 gettoken\(char **ps, char *es, char **q, char **eq\)) 240.2683 Tj
0 -94.9336 Td
-(7157 gettoken\(ps, es, 0, 0\);) 139.792 Tj
+(7157 {) 26.2111 Tj
0 -104.427 Td
-(7158 cmd = pipecmd\(cmd, parsepipe\(ps, es\)\);) 205.32 Tj
-0 -113.92 Td
-(7159 }) 34.9481 Tj
-0 -123.414 Td
-(7160 return cmd;) 78.6333 Tj
-0 -132.907 Td
-(7161 }) 26.2111 Tj
-0 -142.4 Td
-(7162 ) 21.8426 Tj
-0 -151.894 Td
-(7163 struct cmd*) 69.8962 Tj
-0 -161.387 Td
-(7164 parseredirs\(struct cmd *cmd, char **ps, char *es\)) 235.9 Tj
-0 -170.88 Td
-(7165 {) 26.2111 Tj
-0 -180.374 Td
-(7166 int tok;) 65.5277 Tj
-0 -189.867 Td
-(7167 char *q, *eq;) 87.3703 Tj
-0 -199.361 Td
-(7168 ) 21.8426 Tj
-0 -208.854 Td
-(7169 while\(peek\(ps, es, "<>"\)\){) 144.161 Tj
-0 -218.347 Td
-(7170 tok = gettoken\(ps, es, 0, 0\);) 166.004 Tj
-0 -227.841 Td
-(7171 if\(gettoken\(ps, es, &q, &eq\) != 'a'\)) 196.583 Tj
+(7158 char *s;) 65.5277 Tj
+0 -113.9203 Td
+(7159 int ret;) 65.5277 Tj
+0 -123.4137 Td
+(7160 ) 21.8426 Tj
+0 -132.9071 Td
+(7161 s = *ps;) 65.5277 Tj
+0 -142.4004 Td
+(7162 while\(s < es && strchr\(whitespace, *s\)\)) 200.9517 Tj
+0 -151.8938 Td
+(7163 s++;) 56.7907 Tj
+0 -161.3871 Td
+(7164 if\(q\)) 52.4222 Tj
+0 -170.8805 Td
+(7165 *q = s;) 69.8962 Tj
+0 -180.3739 Td
+(7166 ret = *s;) 69.8962 Tj
+0 -189.8672 Td
+(7167 switch\(*s\){) 78.6333 Tj
+0 -199.3606 Td
+(7168 case 0:) 61.1592 Tj
+0 -208.8539 Td
+(7169 break;) 65.5277 Tj
+0 -218.3473 Td
+(7170 case '|':) 69.8962 Tj
+0 -227.8407 Td
+(7171 case '\(':) 69.8962 Tj
0 -237.334 Td
-(7172 panic\("missing file for redirection"\);) 214.057 Tj
-0 -246.827 Td
-(7173 switch\(tok\){) 91.7388 Tj
-0 -256.321 Td
-(7174 case '<':) 78.6333 Tj
-0 -265.814 Td
-(7175 cmd = redircmd\(cmd, q, eq, O_RDONLY, 0\);) 222.794 Tj
-0 -275.307 Td
-(7176 break;) 74.2647 Tj
-0 -284.801 Td
-(7177 case '>':) 78.6333 Tj
-0 -294.294 Td
-(7178 cmd = redircmd\(cmd, q, eq, O_WRONLY|O_CREATE, 1\);) 262.111 Tj
-0 -303.788 Td
-(7179 break;) 74.2647 Tj
-0 -313.281 Td
-(7180 case '+': // >>) 109.213 Tj
-0 -322.774 Td
-(7181 cmd = redircmd\(cmd, q, eq, O_WRONLY|O_CREATE, 1\);) 262.111 Tj
-0 -332.268 Td
-(7182 break;) 74.2647 Tj
+(7172 case '\)':) 69.8962 Tj
+0 -246.8274 Td
+(7173 case ';':) 69.8962 Tj
+0 -256.3207 Td
+(7174 case '&':) 69.8962 Tj
+0 -265.8141 Td
+(7175 case '<':) 69.8962 Tj
+0 -275.3075 Td
+(7176 s++;) 56.7907 Tj
+0 -284.8008 Td
+(7177 break;) 65.5277 Tj
+0 -294.2942 Td
+(7178 case '>':) 69.8962 Tj
+0 -303.7875 Td
+(7179 s++;) 56.7907 Tj
+0 -313.2809 Td
+(7180 if\(*s == '>'\){) 100.4758 Tj
+0 -322.7743 Td
+(7181 ret = '+';) 91.7388 Tj
+0 -332.2676 Td
+(7182 s++;) 65.5277 Tj
0 -341.761 Td
(7183 }) 43.6851 Tj
-0 -351.254 Td
-(7184 }) 34.9481 Tj
-0 -360.748 Td
-(7185 return cmd;) 78.6333 Tj
-0 -370.241 Td
-(7186 }) 26.2111 Tj
-0 -379.734 Td
-(7187 ) 21.8426 Tj
-0 -389.228 Td
-(7188 ) 21.8426 Tj
-0 -398.721 Td
-(7189 ) 21.8426 Tj
-0 -408.214 Td
-(7190 ) 21.8426 Tj
-0 -417.708 Td
-(7191 ) 21.8426 Tj
-0 -427.201 Td
-(7192 ) 21.8426 Tj
-0 -436.695 Td
+0 -351.2543 Td
+(7184 break;) 65.5277 Tj
+0 -360.7477 Td
+(7185 default:) 65.5277 Tj
+0 -370.2411 Td
+(7186 ret = 'a';) 83.0018 Tj
+0 -379.7344 Td
+(7187 while\(s < es && !strchr\(whitespace, *s\) && !strchr\(\
+symbols, *s\)\)) 318.9016 Tj
+0 -389.2278 Td
+(7188 s++;) 65.5277 Tj
+0 -398.7211 Td
+(7189 break;) 65.5277 Tj
+0 -408.2145 Td
+(7190 }) 34.9481 Tj
+0 -417.7079 Td
+(7191 if\(eq\)) 56.7907 Tj
+0 -427.2012 Td
+(7192 *eq = s;) 74.2647 Tj
+0 -436.6946 Td
(7193 ) 21.8426 Tj
-0 -446.188 Td
-(7194 ) 21.8426 Tj
-0 -455.681 Td
-(7195 ) 21.8426 Tj
-0 -465.175 Td
-(7196 ) 21.8426 Tj
+0 -446.1879 Td
+(7194 while\(s < es && strchr\(whitespace, *s\)\)) 200.9517 Tj
+0 -455.6813 Td
+(7195 s++;) 56.7907 Tj
+0 -465.1747 Td
+(7196 *ps = s;) 65.5277 Tj
0 -474.668 Td
-(7197 ) 21.8426 Tj
-0 -484.161 Td
-(7198 ) 21.8426 Tj
-0 -493.655 Td
+(7197 return ret;) 78.6333 Tj
+0 -484.1614 Td
+(7198 }) 26.2111 Tj
+0 -493.6547 Td
(7199 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 71) 34.9481 Tj
Q
Q
@@ -23205,8 +23182,7 @@ pdfStartPage
[0] SC
false op
false OP
-0 0 612 792 re
-W
+{} settransfer
q
q
[0.1 0 0 0.1 0 0] cm
@@ -23221,111 +23197,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 738.864] Tm
+[0 -0.9679 1 0 564.72 738.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sh.c Page 10) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sh.c Page 8) 152.898 Tj
0 -28.4801 Td
-(7200 struct cmd*) 69.8962 Tj
+(7200 int) 34.9481 Tj
0 -37.9735 Td
-(7201 parseblock\(char **ps, char *es\)) 157.267 Tj
+(7201 peek\(char **ps, char *es, char *toks\)) 183.4776 Tj
0 -47.4668 Td
(7202 {) 26.2111 Tj
0 -56.9602 Td
-(7203 struct cmd *cmd;) 100.476 Tj
+(7203 char *s;) 65.5277 Tj
0 -66.4535 Td
(7204 ) 21.8426 Tj
0 -75.9469 Td
-(7205 if\(!peek\(ps, es, "\("\)\)) 126.687 Tj
+(7205 s = *ps;) 65.5277 Tj
0 -85.4403 Td
-(7206 panic\("parseblock"\);) 126.687 Tj
+(7206 while\(s < es && strchr\(whitespace, *s\)\)) 200.9517 Tj
0 -94.9336 Td
-(7207 gettoken\(ps, es, 0, 0\);) 131.055 Tj
+(7207 s++;) 56.7907 Tj
0 -104.427 Td
-(7208 cmd = parseline\(ps, es\);) 135.424 Tj
-0 -113.92 Td
-(7209 if\(!peek\(ps, es, "\)"\)\)) 126.687 Tj
-0 -123.414 Td
-(7210 panic\("syntax - missing \)"\);) 161.635 Tj
-0 -132.907 Td
-(7211 gettoken\(ps, es, 0, 0\);) 131.055 Tj
-0 -142.4 Td
-(7212 cmd = parseredirs\(cmd, ps, es\);) 166.004 Tj
-0 -151.894 Td
-(7213 return cmd;) 78.6333 Tj
-0 -161.387 Td
-(7214 }) 26.2111 Tj
-0 -170.88 Td
-(7215 ) 21.8426 Tj
-0 -180.374 Td
-(7216 struct cmd*) 69.8962 Tj
-0 -189.867 Td
-(7217 parseexec\(char **ps, char *es\)) 152.898 Tj
-0 -199.361 Td
-(7218 {) 26.2111 Tj
-0 -208.854 Td
-(7219 char *q, *eq;) 87.3703 Tj
-0 -218.347 Td
-(7220 int tok, argc;) 91.7388 Tj
-0 -227.841 Td
-(7221 struct execcmd *cmd;) 117.95 Tj
+(7208 *ps = s;) 65.5277 Tj
+0 -113.9203 Td
+(7209 return *s && strchr\(toks, *s\);) 161.635 Tj
+0 -123.4137 Td
+(7210 }) 26.2111 Tj
+0 -132.9071 Td
+(7211 ) 21.8426 Tj
+0 -142.4004 Td
+(7212 struct cmd *parseline\(char**, char*\);) 183.4776 Tj
+0 -151.8938 Td
+(7213 struct cmd *parsepipe\(char**, char*\);) 183.4776 Tj
+0 -161.3871 Td
+(7214 struct cmd *parseexec\(char**, char*\);) 183.4776 Tj
+0 -170.8805 Td
+(7215 struct cmd *nulterminate\(struct cmd*\);) 187.8461 Tj
+0 -180.3739 Td
+(7216 ) 21.8426 Tj
+0 -189.8672 Td
+(7217 struct cmd*) 69.8962 Tj
+0 -199.3606 Td
+(7218 parsecmd\(char *s\)) 96.1073 Tj
+0 -208.8539 Td
+(7219 {) 26.2111 Tj
+0 -218.3473 Td
+(7220 char *es;) 69.8962 Tj
+0 -227.8407 Td
+(7221 struct cmd *cmd;) 100.4758 Tj
0 -237.334 Td
-(7222 struct cmd *ret;) 100.476 Tj
-0 -246.827 Td
-(7223 ) 21.8426 Tj
-0 -256.321 Td
-(7224 if\(peek\(ps, es, "\("\)\)) 122.318 Tj
-0 -265.814 Td
-(7225 return parseblock\(ps, es\);) 152.898 Tj
-0 -275.307 Td
-(7226 ) 21.8426 Tj
-0 -284.801 Td
-(7227 ret = execcmd\(\);) 100.476 Tj
-0 -294.294 Td
-(7228 cmd = \(struct execcmd*\)ret;) 148.529 Tj
-0 -303.788 Td
-(7229 ) 21.8426 Tj
-0 -313.281 Td
-(7230 argc = 0;) 69.8962 Tj
-0 -322.774 Td
-(7231 ret = parseredirs\(ret, ps, es\);) 166.004 Tj
-0 -332.268 Td
-(7232 while\(!peek\(ps, es, "|\)&;"\)\){) 157.267 Tj
+(7222 ) 21.8426 Tj
+0 -246.8274 Td
+(7223 es = s + strlen\(s\);) 113.5814 Tj
+0 -256.3207 Td
+(7224 cmd = parseline\(&s, es\);) 135.4239 Tj
+0 -265.8141 Td
+(7225 peek\(&s, es, ""\);) 104.8443 Tj
+0 -275.3075 Td
+(7226 if\(s != es\){) 83.0018 Tj
+0 -284.8008 Td
+(7227 printf\(2, "leftovers: %s\\n", s\);) 179.1091 Tj
+0 -294.2942 Td
+(7228 panic\("syntax"\);) 109.2129 Tj
+0 -303.7875 Td
+(7229 }) 34.9481 Tj
+0 -313.2809 Td
+(7230 nulterminate\(cmd\);) 109.2129 Tj
+0 -322.7743 Td
+(7231 return cmd;) 78.6333 Tj
+0 -332.2676 Td
+(7232 }) 26.2111 Tj
0 -341.761 Td
-(7233 if\(\(tok=gettoken\(ps, es, &q, &eq\)\) == 0\)) 214.057 Tj
-0 -351.254 Td
-(7234 break;) 74.2647 Tj
-0 -360.748 Td
-(7235 if\(tok != 'a'\)) 100.476 Tj
-0 -370.241 Td
-(7236 panic\("syntax"\);) 117.95 Tj
-0 -379.734 Td
-(7237 cmd->argv[argc] = q;) 126.687 Tj
-0 -389.228 Td
-(7238 cmd->eargv[argc] = eq;) 135.424 Tj
-0 -398.721 Td
-(7239 argc++;) 69.8962 Tj
-0 -408.214 Td
-(7240 if\(argc >= MAXARGS\)) 122.318 Tj
-0 -417.708 Td
-(7241 panic\("too many args"\);) 148.529 Tj
-0 -427.201 Td
-(7242 ret = parseredirs\(ret, ps, es\);) 174.741 Tj
-0 -436.695 Td
+(7233 ) 21.8426 Tj
+0 -351.2543 Td
+(7234 struct cmd*) 69.8962 Tj
+0 -360.7477 Td
+(7235 parseline\(char **ps, char *es\)) 152.898 Tj
+0 -370.2411 Td
+(7236 {) 26.2111 Tj
+0 -379.7344 Td
+(7237 struct cmd *cmd;) 100.4758 Tj
+0 -389.2278 Td
+(7238 ) 21.8426 Tj
+0 -398.7211 Td
+(7239 cmd = parsepipe\(ps, es\);) 135.4239 Tj
+0 -408.2145 Td
+(7240 while\(peek\(ps, es, "&"\)\){) 139.7925 Tj
+0 -417.7079 Td
+(7241 gettoken\(ps, es, 0, 0\);) 139.7925 Tj
+0 -427.2012 Td
+(7242 cmd = backcmd\(cmd\);) 122.3184 Tj
+0 -436.6946 Td
(7243 }) 34.9481 Tj
-0 -446.188 Td
-(7244 cmd->argv[argc] = 0;) 117.95 Tj
-0 -455.681 Td
-(7245 cmd->eargv[argc] = 0;) 122.318 Tj
-0 -465.175 Td
-(7246 return ret;) 78.6333 Tj
+0 -446.1879 Td
+(7244 if\(peek\(ps, es, ";"\)\){) 126.6869 Tj
+0 -455.6813 Td
+(7245 gettoken\(ps, es, 0, 0\);) 139.7925 Tj
+0 -465.1747 Td
+(7246 cmd = listcmd\(cmd, parseline\(ps, es\)\);) 205.3202 Tj
0 -474.668 Td
-(7247 }) 26.2111 Tj
-0 -484.161 Td
-(7248 ) 21.8426 Tj
-0 -493.655 Td
-(7249 ) 21.8426 Tj
-0 -522.135 Td
+(7247 }) 34.9481 Tj
+0 -484.1614 Td
+(7248 return cmd;) 78.6333 Tj
+0 -493.6547 Td
+(7249 }) 26.2111 Tj
+0 -522.1348 Td
(Sheet 72) 34.9481 Tj
Q
Q
@@ -23340,111 +23316,111 @@ q
[10 0 0 10 0 0] cm
[1 0 0 1 0 0] Tm
0 0 Td
-[0 -0.967854 1 0 564.72 392.864] Tm
+[0 -0.9679 1 0 564.72 392.865] Tm
0 0 Td
-/F9_0 8.70222 Tf
-(Aug 30 10:08 2007 xv6/sh.c Page 11) 157.267 Tj
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sh.c Page 9) 152.898 Tj
0 -28.4801 Td
-(7250 // NUL-terminate all the counted strings.) 200.952 Tj
+(7250 struct cmd*) 69.8962 Tj
0 -37.9735 Td
-(7251 struct cmd*) 69.8962 Tj
+(7251 parsepipe\(char **ps, char *es\)) 152.898 Tj
0 -47.4668 Td
-(7252 nulterminate\(struct cmd *cmd\)) 148.529 Tj
+(7252 {) 26.2111 Tj
0 -56.9602 Td
-(7253 {) 26.2111 Tj
+(7253 struct cmd *cmd;) 100.4758 Tj
0 -66.4535 Td
-(7254 int i;) 56.7907 Tj
+(7254 ) 21.8426 Tj
0 -75.9469 Td
-(7255 struct backcmd *bcmd;) 122.318 Tj
+(7255 cmd = parseexec\(ps, es\);) 135.4239 Tj
0 -85.4403 Td
-(7256 struct execcmd *ecmd;) 122.318 Tj
+(7256 if\(peek\(ps, es, "|"\)\){) 126.6869 Tj
0 -94.9336 Td
-(7257 struct listcmd *lcmd;) 122.318 Tj
+(7257 gettoken\(ps, es, 0, 0\);) 139.7925 Tj
0 -104.427 Td
-(7258 struct pipecmd *pcmd;) 122.318 Tj
-0 -113.92 Td
-(7259 struct redircmd *rcmd;) 126.687 Tj
-0 -123.414 Td
-(7260 ) 21.8426 Tj
-0 -132.907 Td
-(7261 if\(cmd == 0\)) 83.0018 Tj
-0 -142.4 Td
-(7262 return 0;) 78.6333 Tj
-0 -151.894 Td
-(7263 ) 21.8426 Tj
-0 -161.387 Td
-(7264 switch\(cmd->type\){) 109.213 Tj
-0 -170.88 Td
-(7265 case EXEC:) 74.2647 Tj
-0 -180.374 Td
-(7266 ecmd = \(struct execcmd*\)cmd;) 161.635 Tj
-0 -189.867 Td
-(7267 for\(i=0; ecmd->argv[i]; i++\)) 161.635 Tj
-0 -199.361 Td
-(7268 *ecmd->eargv[i] = 0;) 135.424 Tj
-0 -208.854 Td
-(7269 break;) 65.5277 Tj
-0 -218.347 Td
-(7270 ) 21.8426 Tj
-0 -227.841 Td
-(7271 case REDIR:) 78.6333 Tj
+(7258 cmd = pipecmd\(cmd, parsepipe\(ps, es\)\);) 205.3202 Tj
+0 -113.9203 Td
+(7259 }) 34.9481 Tj
+0 -123.4137 Td
+(7260 return cmd;) 78.6333 Tj
+0 -132.9071 Td
+(7261 }) 26.2111 Tj
+0 -142.4004 Td
+(7262 ) 21.8426 Tj
+0 -151.8938 Td
+(7263 struct cmd*) 69.8962 Tj
+0 -161.3871 Td
+(7264 parseredirs\(struct cmd *cmd, char **ps, char *es\)) 235.8998 Tj
+0 -170.8805 Td
+(7265 {) 26.2111 Tj
+0 -180.3739 Td
+(7266 int tok;) 65.5277 Tj
+0 -189.8672 Td
+(7267 char *q, *eq;) 87.3703 Tj
+0 -199.3606 Td
+(7268 ) 21.8426 Tj
+0 -208.8539 Td
+(7269 while\(peek\(ps, es, "<>"\)\){) 144.161 Tj
+0 -218.3473 Td
+(7270 tok = gettoken\(ps, es, 0, 0\);) 166.0035 Tj
+0 -227.8407 Td
+(7271 if\(gettoken\(ps, es, &q, &eq\) != 'a'\)) 196.5831 Tj
0 -237.334 Td
-(7272 rcmd = \(struct redircmd*\)cmd;) 166.004 Tj
-0 -246.827 Td
-(7273 nulterminate\(rcmd->cmd\);) 144.161 Tj
-0 -256.321 Td
-(7274 *rcmd->efile = 0;) 113.581 Tj
-0 -265.814 Td
-(7275 break;) 65.5277 Tj
-0 -275.307 Td
-(7276 ) 21.8426 Tj
-0 -284.801 Td
-(7277 case PIPE:) 74.2647 Tj
-0 -294.294 Td
-(7278 pcmd = \(struct pipecmd*\)cmd;) 161.635 Tj
-0 -303.788 Td
-(7279 nulterminate\(pcmd->left\);) 148.529 Tj
-0 -313.281 Td
-(7280 nulterminate\(pcmd->right\);) 152.898 Tj
-0 -322.774 Td
-(7281 break;) 65.5277 Tj
-0 -332.268 Td
-(7282 ) 21.8426 Tj
+(7272 panic\("missing file for redirection"\);) 214.0572 Tj
+0 -246.8274 Td
+(7273 switch\(tok\){) 91.7388 Tj
+0 -256.3207 Td
+(7274 case '<':) 78.6333 Tj
+0 -265.8141 Td
+(7275 cmd = redircmd\(cmd, q, eq, O_RDONLY, 0\);) 222.7942 Tj
+0 -275.3075 Td
+(7276 break;) 74.2647 Tj
+0 -284.8008 Td
+(7277 case '>':) 78.6333 Tj
+0 -294.2942 Td
+(7278 cmd = redircmd\(cmd, q, eq, O_WRONLY|O_CREATE, 1\);) 262.1109 Tj
+0 -303.7875 Td
+(7279 break;) 74.2647 Tj
+0 -313.2809 Td
+(7280 case '+': // >>) 109.2129 Tj
+0 -322.7743 Td
+(7281 cmd = redircmd\(cmd, q, eq, O_WRONLY|O_CREATE, 1\);) 262.1109 Tj
+0 -332.2676 Td
+(7282 break;) 74.2647 Tj
0 -341.761 Td
-(7283 case LIST:) 74.2647 Tj
-0 -351.254 Td
-(7284 lcmd = \(struct listcmd*\)cmd;) 161.635 Tj
-0 -360.748 Td
-(7285 nulterminate\(lcmd->left\);) 148.529 Tj
-0 -370.241 Td
-(7286 nulterminate\(lcmd->right\);) 152.898 Tj
-0 -379.734 Td
-(7287 break;) 65.5277 Tj
-0 -389.228 Td
+(7283 }) 43.6851 Tj
+0 -351.2543 Td
+(7284 }) 34.9481 Tj
+0 -360.7477 Td
+(7285 return cmd;) 78.6333 Tj
+0 -370.2411 Td
+(7286 }) 26.2111 Tj
+0 -379.7344 Td
+(7287 ) 21.8426 Tj
+0 -389.2278 Td
(7288 ) 21.8426 Tj
-0 -398.721 Td
-(7289 case BACK:) 74.2647 Tj
-0 -408.214 Td
-(7290 bcmd = \(struct backcmd*\)cmd;) 161.635 Tj
-0 -417.708 Td
-(7291 nulterminate\(bcmd->cmd\);) 144.161 Tj
-0 -427.201 Td
-(7292 break;) 65.5277 Tj
-0 -436.695 Td
-(7293 }) 34.9481 Tj
-0 -446.188 Td
-(7294 return cmd;) 78.6333 Tj
-0 -455.681 Td
-(7295 }) 26.2111 Tj
-0 -465.175 Td
+0 -398.7211 Td
+(7289 ) 21.8426 Tj
+0 -408.2145 Td
+(7290 ) 21.8426 Tj
+0 -417.7079 Td
+(7291 ) 21.8426 Tj
+0 -427.2012 Td
+(7292 ) 21.8426 Tj
+0 -436.6946 Td
+(7293 ) 21.8426 Tj
+0 -446.1879 Td
+(7294 ) 21.8426 Tj
+0 -455.6813 Td
+(7295 ) 21.8426 Tj
+0 -465.1747 Td
(7296 ) 21.8426 Tj
0 -474.668 Td
(7297 ) 21.8426 Tj
-0 -484.161 Td
+0 -484.1614 Td
(7298 ) 21.8426 Tj
-0 -493.655 Td
+0 -493.6547 Td
(7299 ) 21.8426 Tj
-0 -522.135 Td
+0 -522.1348 Td
(Sheet 72) 34.9481 Tj
Q
Q
@@ -23453,8 +23429,275 @@ Q
showpage
%%PageTrailer
pdfEndPage
+%%Page: 80 80
+%%BeginPageSetup
+%%PageOrientation: Landscape
+pdfStartPage
+180 rotate
+-612 -792 translate
+0 0 612 792 re W
+%%EndPageSetup
+[] 0 d
+1 i
+0 j
+0 J
+10 M
+1 w
+/DeviceGray {} cs
+[0] sc
+/DeviceGray {} CS
+[0] SC
+false op
+false OP
+{} settransfer
+q
+q
+[0.1 0 0 0.1 0 0] cm
+q
+180 3960 5760 3460 re
+W
+/DeviceGray {} CS
+[0] SC
+/DeviceGray {} cs
+[0] sc
+q
+[10 0 0 10 0 0] cm
+[1 0 0 1 0 0] Tm
+0 0 Td
+[0 -0.9679 1 0 564.72 738.865] Tm
+0 0 Td
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sh.c Page 10) 157.2665 Tj
+0 -28.4801 Td
+(7300 struct cmd*) 69.8962 Tj
+0 -37.9735 Td
+(7301 parseblock\(char **ps, char *es\)) 157.2665 Tj
+0 -47.4668 Td
+(7302 {) 26.2111 Tj
+0 -56.9602 Td
+(7303 struct cmd *cmd;) 100.4758 Tj
+0 -66.4535 Td
+(7304 ) 21.8426 Tj
+0 -75.9469 Td
+(7305 if\(!peek\(ps, es, "\("\)\)) 126.6869 Tj
+0 -85.4403 Td
+(7306 panic\("parseblock"\);) 126.6869 Tj
+0 -94.9336 Td
+(7307 gettoken\(ps, es, 0, 0\);) 131.0554 Tj
+0 -104.427 Td
+(7308 cmd = parseline\(ps, es\);) 135.4239 Tj
+0 -113.9203 Td
+(7309 if\(!peek\(ps, es, "\)"\)\)) 126.6869 Tj
+0 -123.4137 Td
+(7310 panic\("syntax - missing \)"\);) 161.635 Tj
+0 -132.9071 Td
+(7311 gettoken\(ps, es, 0, 0\);) 131.0554 Tj
+0 -142.4004 Td
+(7312 cmd = parseredirs\(cmd, ps, es\);) 166.0035 Tj
+0 -151.8938 Td
+(7313 return cmd;) 78.6333 Tj
+0 -161.3871 Td
+(7314 }) 26.2111 Tj
+0 -170.8805 Td
+(7315 ) 21.8426 Tj
+0 -180.3739 Td
+(7316 struct cmd*) 69.8962 Tj
+0 -189.8672 Td
+(7317 parseexec\(char **ps, char *es\)) 152.898 Tj
+0 -199.3606 Td
+(7318 {) 26.2111 Tj
+0 -208.8539 Td
+(7319 char *q, *eq;) 87.3703 Tj
+0 -218.3473 Td
+(7320 int tok, argc;) 91.7388 Tj
+0 -227.8407 Td
+(7321 struct execcmd *cmd;) 117.9499 Tj
+0 -237.334 Td
+(7322 struct cmd *ret;) 100.4758 Tj
+0 -246.8274 Td
+(7323 ) 21.8426 Tj
+0 -256.3207 Td
+(7324 if\(peek\(ps, es, "\("\)\)) 122.3184 Tj
+0 -265.8141 Td
+(7325 return parseblock\(ps, es\);) 152.898 Tj
+0 -275.3075 Td
+(7326 ) 21.8426 Tj
+0 -284.8008 Td
+(7327 ret = execcmd\(\);) 100.4758 Tj
+0 -294.2942 Td
+(7328 cmd = \(struct execcmd*\)ret;) 148.5295 Tj
+0 -303.7875 Td
+(7329 ) 21.8426 Tj
+0 -313.2809 Td
+(7330 argc = 0;) 69.8962 Tj
+0 -322.7743 Td
+(7331 ret = parseredirs\(ret, ps, es\);) 166.0035 Tj
+0 -332.2676 Td
+(7332 while\(!peek\(ps, es, "|\)&;"\)\){) 157.2665 Tj
+0 -341.761 Td
+(7333 if\(\(tok=gettoken\(ps, es, &q, &eq\)\) == 0\)) 214.0572 Tj
+0 -351.2543 Td
+(7334 break;) 74.2647 Tj
+0 -360.7477 Td
+(7335 if\(tok != 'a'\)) 100.4758 Tj
+0 -370.2411 Td
+(7336 panic\("syntax"\);) 117.9499 Tj
+0 -379.7344 Td
+(7337 cmd->argv[argc] = q;) 126.6869 Tj
+0 -389.2278 Td
+(7338 cmd->eargv[argc] = eq;) 135.4239 Tj
+0 -398.7211 Td
+(7339 argc++;) 69.8962 Tj
+0 -408.2145 Td
+(7340 if\(argc >= MAXARGS\)) 122.3184 Tj
+0 -417.7079 Td
+(7341 panic\("too many args"\);) 148.5295 Tj
+0 -427.2012 Td
+(7342 ret = parseredirs\(ret, ps, es\);) 174.7406 Tj
+0 -436.6946 Td
+(7343 }) 34.9481 Tj
+0 -446.1879 Td
+(7344 cmd->argv[argc] = 0;) 117.9499 Tj
+0 -455.6813 Td
+(7345 cmd->eargv[argc] = 0;) 122.3184 Tj
+0 -465.1747 Td
+(7346 return ret;) 78.6333 Tj
+0 -474.668 Td
+(7347 }) 26.2111 Tj
+0 -484.1614 Td
+(7348 ) 21.8426 Tj
+0 -493.6547 Td
+(7349 ) 21.8426 Tj
+0 -522.1348 Td
+(Sheet 73) 34.9481 Tj
+Q
+Q
+q
+180 500 5760 3460 re
+W
+/DeviceGray {} CS
+[0] SC
+/DeviceGray {} cs
+[0] sc
+q
+[10 0 0 10 0 0] cm
+[1 0 0 1 0 0] Tm
+0 0 Td
+[0 -0.9679 1 0 564.72 392.865] Tm
+0 0 Td
+/F8_0 8.7022 Tf
+(Sep 3 10:05 2008 xv6/sh.c Page 11) 157.2665 Tj
+0 -28.4801 Td
+(7350 // NUL-terminate all the counted strings.) 200.9517 Tj
+0 -37.9735 Td
+(7351 struct cmd*) 69.8962 Tj
+0 -47.4668 Td
+(7352 nulterminate\(struct cmd *cmd\)) 148.5295 Tj
+0 -56.9602 Td
+(7353 {) 26.2111 Tj
+0 -66.4535 Td
+(7354 int i;) 56.7907 Tj
+0 -75.9469 Td
+(7355 struct backcmd *bcmd;) 122.3184 Tj
+0 -85.4403 Td
+(7356 struct execcmd *ecmd;) 122.3184 Tj
+0 -94.9336 Td
+(7357 struct listcmd *lcmd;) 122.3184 Tj
+0 -104.427 Td
+(7358 struct pipecmd *pcmd;) 122.3184 Tj
+0 -113.9203 Td
+(7359 struct redircmd *rcmd;) 126.6869 Tj
+0 -123.4137 Td
+(7360 ) 21.8426 Tj
+0 -132.9071 Td
+(7361 if\(cmd == 0\)) 83.0018 Tj
+0 -142.4004 Td
+(7362 return 0;) 78.6333 Tj
+0 -151.8938 Td
+(7363 ) 21.8426 Tj
+0 -161.3871 Td
+(7364 switch\(cmd->type\){) 109.2129 Tj
+0 -170.8805 Td
+(7365 case EXEC:) 74.2647 Tj
+0 -180.3739 Td
+(7366 ecmd = \(struct execcmd*\)cmd;) 161.635 Tj
+0 -189.8672 Td
+(7367 for\(i=0; ecmd->argv[i]; i++\)) 161.635 Tj
+0 -199.3606 Td
+(7368 *ecmd->eargv[i] = 0;) 135.4239 Tj
+0 -208.8539 Td
+(7369 break;) 65.5277 Tj
+0 -218.3473 Td
+(7370 ) 21.8426 Tj
+0 -227.8407 Td
+(7371 case REDIR:) 78.6333 Tj
+0 -237.334 Td
+(7372 rcmd = \(struct redircmd*\)cmd;) 166.0035 Tj
+0 -246.8274 Td
+(7373 nulterminate\(rcmd->cmd\);) 144.161 Tj
+0 -256.3207 Td
+(7374 *rcmd->efile = 0;) 113.5814 Tj
+0 -265.8141 Td
+(7375 break;) 65.5277 Tj
+0 -275.3075 Td
+(7376 ) 21.8426 Tj
+0 -284.8008 Td
+(7377 case PIPE:) 74.2647 Tj
+0 -294.2942 Td
+(7378 pcmd = \(struct pipecmd*\)cmd;) 161.635 Tj
+0 -303.7875 Td
+(7379 nulterminate\(pcmd->left\);) 148.5295 Tj
+0 -313.2809 Td
+(7380 nulterminate\(pcmd->right\);) 152.898 Tj
+0 -322.7743 Td
+(7381 break;) 65.5277 Tj
+0 -332.2676 Td
+(7382 ) 21.8426 Tj
+0 -341.761 Td
+(7383 case LIST:) 74.2647 Tj
+0 -351.2543 Td
+(7384 lcmd = \(struct listcmd*\)cmd;) 161.635 Tj
+0 -360.7477 Td
+(7385 nulterminate\(lcmd->left\);) 148.5295 Tj
+0 -370.2411 Td
+(7386 nulterminate\(lcmd->right\);) 152.898 Tj
+0 -379.7344 Td
+(7387 break;) 65.5277 Tj
+0 -389.2278 Td
+(7388 ) 21.8426 Tj
+0 -398.7211 Td
+(7389 case BACK:) 74.2647 Tj
+0 -408.2145 Td
+(7390 bcmd = \(struct backcmd*\)cmd;) 161.635 Tj
+0 -417.7079 Td
+(7391 nulterminate\(bcmd->cmd\);) 144.161 Tj
+0 -427.2012 Td
+(7392 break;) 65.5277 Tj
+0 -436.6946 Td
+(7393 }) 34.9481 Tj
+0 -446.1879 Td
+(7394 return cmd;) 78.6333 Tj
+0 -455.6813 Td
+(7395 }) 26.2111 Tj
+0 -465.1747 Td
+(7396 ) 21.8426 Tj
+0 -474.668 Td
+(7397 ) 21.8426 Tj
+0 -484.1614 Td
+(7398 ) 21.8426 Tj
+0 -493.6547 Td
+(7399 ) 21.8426 Tj
+0 -522.1348 Td
+(Sheet 73) 34.9481 Tj
+Q
+Q
+Q
+Q
+showpage
+%%PageTrailer
+pdfEndPage
%%Trailer
end
%%DocumentSuppliedResources:
-%%+ font LucidaSans-Typewriter83
+%%+ font YLWBJI+LucidaSans-Typewriter83
%%EOF
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