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| author | Freya Murphy <freya@freyacat.org> | 2025-04-21 16:45:28 -0400 |
|---|---|---|
| committer | Freya Murphy <freya@freyacat.org> | 2025-04-21 16:45:33 -0400 |
| commit | ceb9471fed96f907e37a6ba031825c31167a8ff4 (patch) | |
| tree | d98392e420b4541a6ba926ff4d8b3ebe85734580 /user/lib/entry.S | |
| parent | update linker scripts (diff) | |
| download | comus-ceb9471fed96f907e37a6ba031825c31167a8ff4.tar.gz comus-ceb9471fed96f907e37a6ba031825c31167a8ff4.tar.bz2 comus-ceb9471fed96f907e37a6ba031825c31167a8ff4.zip | |
update userland to compile
Diffstat (limited to 'user/lib/entry.S')
| -rw-r--r-- | user/lib/entry.S | 26 |
1 files changed, 8 insertions, 18 deletions
diff --git a/user/lib/entry.S b/user/lib/entry.S index 87ad9c7..34390a0 100644 --- a/user/lib/entry.S +++ b/user/lib/entry.S @@ -1,25 +1,15 @@ -// -// user-level startup routine -// - .text .globl _start - .globl main - .globl exit + .extern main + .extern exit -// entry point - this is where the kernel starts us running + .section .text + .code64 _start: - // we immediately call main() call main - // if we come back from that, it means the user - // program didn't call exit(), in which case the - // value returned from main() is the exit status - - // push that value onto the stack and call exit() - subl $12, %esp - pushl %eax + subq $16, %rsp # ??? + pushq %rax call exit - // if we come back from that, something bad has - // happened, so we just lock up -1: jmp 1b +halt: + jmp halt |