69 lines
848 B
NASM
69 lines
848 B
NASM
format MS COFF
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use32
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MUTEX.lock equ 0
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MUTEX.handle equ 4
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section '.text' align 16 code readable executable
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@mutex_lock_timeout@8
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push esi
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mov esi, edx
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push ebx
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mov edx, 1
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lock xadd [ecx+MUTEX.lock], edx
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mov eax, 1
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test edx, edx
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jnz .slow
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.ok:
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pop ebx
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pop esi
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retn
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align 4
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.slow:
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mov edx, 2
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xchg edx, [ecx+MUTEX.lock]
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xor eax, eax
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test edx, edx
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jz .ok
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mov edx, 2
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mov ecx, [ecx+MUTEX.handle]
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mov al, 77
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mov ebx, edx
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int 0x40
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add eax, 1
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pop ebx
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pop esi
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ret
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