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LibC: Port setjmp syntax to avoid nasm dependency

This commit is contained in:
Robin Burchell 2019-05-23 10:14:19 +02:00 committed by Andreas Kling
parent 7afc0fb9c8
commit a04a58b7eb
5 changed files with 34 additions and 42 deletions

31
LibC/setjmp.S Normal file
View file

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.global setjmp
setjmp:
mov 4(%esp), %eax
mov %ebx, 0(%eax)
mov %esi, 4(%eax)
mov %edi, 8(%eax)
mov %ebp, 12(%eax)
lea 4(%esp), %ecx
mov %ecx, 16(%eax)
mov (%esp), %ecx
mov %ecx, 20(%eax)
xor %eax, %eax
ret
.global longjmp
longjmp:
mov 4(%esp), %edx
mov 8(%esp), %eax
mov 0(%edx), %ebx
mov 4(%edx), %esi
mov 8(%edx), %edi
mov 12(%edx), %ebp
mov 16(%edx), %ecx
mov %ecx, %esp
mov 20(%edx), %ecx
test %eax, %eax
jnz .nonzero
mov 1, %eax
.nonzero:
jmp *%ecx