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gallium: Implement atomic for MSVC on x86.

This commit is contained in:
Michal Krol 2009-03-16 13:42:22 +01:00
parent a7d42e11b4
commit c97b671d64
1 changed files with 65 additions and 1 deletions
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66
src/gallium/include/pipe/p_atomic.h
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@ -66,7 +66,71 @@ p_atomic_cmpxchg(struct pipe_atomic *v, int32_t old, int32_t new)
return __sync_val_compare_and_swap(&v->count, old, new);
}
#elif (defined(PIPE_SUBSYSTEM_WINDOWS_USER)) /* (defined(PIPE_CC_GCC)) */
#elif (defined(PIPE_ARCH_X86) && defined(PIPE_CC_MSVC)) /* (defined(PIPE_CC_GCC)) */
struct pipe_atomic
{
int32_t count;
};
#define p_atomic_set(_v, _i) ((_v)->count = (_i))
#define p_atomic_read(_v) ((_v)->count)
static INLINE boolean
p_atomic_dec_zero(struct pipe_atomic *v)
{
int32_t *pcount = &v->count;
unsigned char c;
__asm {
mov eax, [pcount]
lock dec dword ptr [eax]
sete byte ptr [c]
}
return c != 0;
}
static INLINE void
p_atomic_inc(struct pipe_atomic *v)
{
int32_t *pcount = &v->count;
__asm {
mov eax, [pcount]
lock inc dword ptr [eax]
}
}
static INLINE void
p_atomic_dec(struct pipe_atomic *v)
{
int32_t *pcount = &v->count;
__asm {
mov eax, [pcount]
lock dec dword ptr [eax]
}
}
static INLINE int32_t
p_atomic_cmpxchg(struct pipe_atomic *v, int32_t old, int32_t new)
{
int32_t *pcount = &v->count;
int32_t orig;
__asm {
mov ecx, [pcount]
mov eax, [old]
mov edx, [new]
lock cmpxchg [ecx], edx
mov [orig], eax
}
return orig;
}
#elif (defined(PIPE_SUBSYSTEM_WINDOWS_USER)) /* (defined(PIPE_ARCH_X86) && defined(PIPE_CC_MSVC)) */
struct pipe_atomic
{