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| author | Robert Morris <[email protected]> | 2020-08-15 05:46:32 -0400 |
|---|---|---|
| committer | Frans Kaashoek <[email protected]> | 2020-08-17 08:18:23 -0400 |
| commit | 95dad4c061d6e1f036d75cc041367a8f12b92982 (patch) | |
| tree | 6a54ca874f00de6f66751ee4c7299cfb322b18c7 /kernel | |
| parent | f2ec6777bd530f949c235d7f0386286314a2f601 (diff) | |
| download | xv6-labs-95dad4c061d6e1f036d75cc041367a8f12b92982.tar.gz xv6-labs-95dad4c061d6e1f036d75cc041367a8f12b92982.tar.bz2 xv6-labs-95dad4c061d6e1f036d75cc041367a8f12b92982.zip | |
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Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/entry.S | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/kernel/entry.S b/kernel/entry.S index 62fe1f2..b72ddbc 100644 --- a/kernel/entry.S +++ b/kernel/entry.S @@ -1,14 +1,8 @@ - # qemu -kernel starts at 0x1000. the instructions - # there seem to be provided by qemu, as if it - # were a ROM. the code at 0x1000 jumps to - # 0x80000000, the _start function here, - # in machine mode. each CPU starts here. -.section .data -.globl stack0 + # qemu -kernel loads the kernel at 0x80000000 + # and causes each CPU to jump there. + # kernel.ld causes the following code to + # be placed at 0x80000000. .section .text -.globl start -.section .text -.globl _entry _entry: # set up a stack for C. # stack0 is declared in start.c, @@ -22,5 +16,5 @@ _entry: add sp, sp, a0 # jump to start() in start.c call start -junk: - j junk +spin: + j spin |