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Kernel: Fix signal trampoline

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32 bit did not even support it and 64 bit did not align stack
This commit is contained in:
Bananymous
2024-04-18 13:32:40 +03:00
parent a698f91db4
commit 061012a268
4 changed files with 18 additions and 6 deletions
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10
kernel/arch/i686/Signal.S
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@@ -7,22 +7,26 @@
.global signal_trampoline
signal_trampoline:
ud2
pushl %ebp
movl %esp, %ebp
subl $8, %esp
pusha
movl 40(%esp), %edi
movl 36(%esp), %eax
// align stack to 16 bytes
movl %esp, %ebx
andl $0x0F, %ebx
subl %ebx, %esp
subl $12, %esp
pushl %edi
call *%eax
addl $16, %esp
// restore stack
addl %ebx, %esp
popa
leave