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Ensure 16B stack alignment for x86

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This commit is contained in:
Gary Guo 2023-05-07 12:15:24 +01:00
parent 87851eb776
commit 73c9fbf66e
1 changed files with 6 additions and 6 deletions
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12
src/unwinder/arch/x86.rs
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@ -61,14 +61,14 @@ pub extern "C-unwind" fn save_context(f: extern "C" fn(&mut Context, *mut ()), p
unsafe { unsafe {
asm!( asm!(
" "
sub esp, 44 sub esp, 52
mov [esp + 4], ecx mov [esp + 4], ecx
mov [esp + 8], edx mov [esp + 8], edx
mov [esp + 12], ebx mov [esp + 12], ebx
/* Adjust the stack to account for the return address */ /* Adjust the stack to account for the return address */
lea eax, [esp + 48] lea eax, [esp + 56]
mov [esp + 16], eax mov [esp + 16], eax
mov [esp + 20], ebp mov [esp + 20], ebp
@ -76,19 +76,19 @@ pub extern "C-unwind" fn save_context(f: extern "C" fn(&mut Context, *mut ()), p
mov [esp + 28], edi mov [esp + 28], edi
/* Return address */ /* Return address */
mov eax, [esp + 44] mov eax, [esp + 52]
mov [esp + 32], eax mov [esp + 32], eax
stmxcsr [esp + 36] stmxcsr [esp + 36]
fnstcw [esp + 40] fnstcw [esp + 40]
mov eax, [esp + 52] mov eax, [esp + 60]
mov ecx, esp mov ecx, esp
push eax push eax
push ecx push ecx
call [esp + 56] call [esp + 64]
add esp, 52 add esp, 60
ret ret
", ",
options(noreturn) options(noreturn)