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