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Kernel: Cleanup stack alignment assembly

This commit is contained in:
Bananymous 2025-04-20 16:55:18 +03:00
parent 265b4c2b22
commit 99fc7817c6
2 changed files with 6 additions and 8 deletions
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7
kernel/arch/i686/Signal.S
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@ -16,9 +16,8 @@ signal_trampoline:
movl 36(%esp), %eax movl 36(%esp), %eax
// align stack to 16 bytes // align stack to 16 bytes
movl %esp, %ebx movl %esp, %ebp
andl $0x0F, %ebx andl $-16, %esp
subl %ebx, %esp
subl $12, %esp subl $12, %esp
pushl %edi pushl %edi
@ -26,7 +25,7 @@ signal_trampoline:
addl $16, %esp addl $16, %esp
// restore stack // restore stack
addl %ebx, %esp movl %ebp, %esp
popa popa
leave leave

7
kernel/arch/x86_64/Signal.S
View File

@ -27,14 +27,13 @@ signal_trampoline:
movq 120(%rsp), %rax movq 120(%rsp), %rax
// align stack to 16 bytes // align stack to 16 bytes
movq %rsp, %rbx movq %rsp, %rbp
andq $0x0F, %rbx andq $-16, %rsp
subq %rbx, %rsp
call *%rax call *%rax
// restore stack // restore stack
addq %rbx, %rsp movq %rbp, %rsp
popq %r15 popq %r15
popq %r14 popq %r14
popq %r13 popq %r13