/* _Atomic_fetch_or_8 */
_Uint8_t _Fetch_or_8(volatile _Uint8_t *_Tgt, _Uint8_t _Value)
{ /* or _Value with *_Tgt atomically with
sequentially consistent memory order */
#if _MS_32
_Compiler_barrier();
__asm
{
mov esi, _Tgt;
mov eax, [esi];
mov edx, 4[esi];
again:
mov ecx, edx;
mov ebx, eax;
or ebx, dword ptr _Value;
or ecx, dword ptr _Value[4];
lock cmpxchg8b [esi];
jnz again;
mov dword ptr _Value, eax;
mov dword ptr _Value[4], edx;
}
_Compiler_barrier();
#elif _MS_64
_Value = _InterlockedOr64((volatile _LONGLONG *)_Tgt, _Value);
#endif /* _MS_32 */
return (_Value);
}
/* _Atomic_load_8 */
static _Uint8_t _Load_seq_cst_8(volatile _Uint8_t *_Tgt)
{ /* load from *_Tgt atomically with
sequentially consistent memory order */
_Uint8_t _Value;
#if _MS_32
_Compiler_barrier();
__asm
{
mov esi, _Tgt;
mov ecx, edx;
mov ebx, eax;
lock cmpxchg8b [esi];
mov dword ptr _Value[4], edx;
mov dword ptr _Value, eax;
}
_Compiler_barrier();
#elif _MS_64
_Value = _InterlockedOr64((volatile _LONGLONG *)_Tgt, 0);
#endif /* _MS_32 */
return (_Value);
}
__int64 __stdcall InterlockedOr64(__int64 volatile *Destination, __int64 Value)
{
return _InterlockedOr64(Destination, Value);
}
