From 01a6c054d548d9fff8bbdfac4d3f3de4ae8677a1 Mon Sep 17 00:00:00 2001 From: Austin Clements Date: Wed, 7 Sep 2011 11:49:14 -0400 Subject: Remove web directory; all cruft or moved to 6.828 repo --- web/x86-intr.html | 53 ----------------------------------------------------- 1 file changed, 53 deletions(-) delete mode 100644 web/x86-intr.html (limited to 'web/x86-intr.html') diff --git a/web/x86-intr.html b/web/x86-intr.html deleted file mode 100644 index 0369e25..0000000 --- a/web/x86-intr.html +++ /dev/null @@ -1,53 +0,0 @@ -Homework: xv6 and Interrupts and Exceptions - - - - - -

Homework: xv6 and Interrupts and Exceptions

- -

-Read: xv6's trapasm.S, trap.c, syscall.c, vectors.S, and usys.S. Skim -lapic.c, ioapic.c, and picirq.c - -

-Hand-In Procedure -

-You are to turn in this homework during lecture. Please -write up your answers to the exercises below and hand them in to a -6.828 staff member at the beginning of the lecture. -

- -Introduction - -

Try to understand -xv6's trapasm.S, trap.c, syscall.c, vectors.S, and usys.S. Skim - You will need to consult: - -

Chapter 5 of IA-32 Intel -Architecture Software Developer's Manual, Volume 3: System programming -guide; you can skip sections 5.7.1, 5.8.2, and 5.12.2. Be aware -that terms such as exceptions, traps, interrupts, faults and aborts -have no standard meaning. - -

Chapter 9 of the 1987 i386 -Programmer's Reference Manual also covers exception and interrupt -handling in IA32 processors. - -

Assignment: - -In xv6, set a breakpoint at the beginning of syscall() to -catch the very first system call. What values are on the stack at -this point? Turn in the output of print-stack 35 at that -breakpoint with each value labeled as to what it is (e.g., -saved %ebp for trap, -trapframe.eip, etc.). -

-This completes the homework. - - - - - - - -- cgit v1.2.3