kolibrios-gitea/contrib/sdk/sources/libsync/m_lock_timeout.asm
Sergey Semyonov (Serge) 8982c8cd10 sdk: update builds on linux hosts
git-svn-id: svn://kolibrios.org@6303 a494cfbc-eb01-0410-851d-a64ba20cac60
2016-03-04 23:19:28 +00:00

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