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Fix deterministic startup stack setup, especially for bare metal

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This commit is contained in:
tkchia 2022-08-09 09:13:07 +00:00
parent d4744048ba
commit e24f7afd10
1 changed files with 5 additions and 2 deletions
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7
libc/runtime/cosmo.S
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@ -99,6 +99,8 @@ cosmo: push %rbp
.init.start 304,_init_stack
testb IsWindows()
jnz 9f
testb IsMetal()
jnz 9f
push %rdi
push %rsi
// allocate stack
@ -120,8 +122,9 @@ cosmo: push %rbp
leave
pop %rcx
lea (%rax,%r8),%rsp
sub $ape_stack_align,%rsp # openbsd:stackbound
mov %rbp,(%rsp)
mov $ape_stack_align,%eax # openbsd:stackbound
neg %rax
and %rax,%rsp
push %rcx
push %rbp
mov %rsp,%rbp