Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2024-07-12 07:35:10 +00:00
Code Issues Packages Projects Releases Wiki Activity

- Patch by hackbunny:

Browse source 
"64-bit __sync_val_compare_and_swap is, apparently, not inlined on x86. Go figure."
"Add "lock" prefix to cmpxchg8b, just in case"

svn path=/trunk/; revision=36126
This commit is contained in:
Stefan Ginsberg 2008-09-10 15:02:57 +00:00
parent 4c462c3876
commit b08929de56
1 changed files with 28 additions and 22 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

50
reactos/include/psdk/intrin_x86.h
View file

@ -104,11 +104,6 @@ static __inline__ __attribute__((always_inline)) long _InterlockedCompareExchang
return __sync_val_compare_and_swap(Destination, Comperand, Exchange);
}
static __inline__ __attribute__((always_inline)) long long _InterlockedCompareExchange64(volatile long long * const Destination, const long long Exchange, const long long Comperand)
{
return __sync_val_compare_and_swap(Destination, Comperand, Exchange);
}
static __inline__ __attribute__((always_inline)) void * _InterlockedCompareExchangePointer(void * volatile * const Destination, void * const Exchange, void * const Comperand)
{
return __sync_val_compare_and_swap(Destination, Comperand, Exchange);
@ -236,23 +231,6 @@ static __inline__ __attribute__((always_inline)) long _InterlockedCompareExchang
return retval;
}
static __inline__ __attribute__((always_inline)) long long _InterlockedCompareExchange64(volatile long long * const Destination, const long long Exchange, const long long Comperand)
{
long long retval = Comperand;
__asm__
(
"cmpxchg8b %[Destination]" :
[retval] "+A" (retval) :
[Destination] "m" (*Destination),
"b" ((unsigned long)((Exchange >> 0) & 0xFFFFFFFF)),
"c" ((unsigned long)((Exchange >> 32) & 0xFFFFFFFF)) :
"memory"
);
return retval;
}
static __inline__ __attribute__((always_inline)) void * _InterlockedCompareExchangePointer(void * volatile * const Destination, void * const Exchange, void * const Comperand)
{
void * retval = (void *)Comperand;
@ -443,6 +421,34 @@ static __inline__ __attribute__((always_inline)) long _InterlockedXor(volatile l
#endif
#if (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) > 40100 && defined(__x86_64__)
static __inline__ __attribute__((always_inline)) long long _InterlockedCompareExchange64(volatile long long * const Destination, const long long Exchange, const long long Comperand)
{
return __sync_val_compare_and_swap(Destination, Comperand, Exchange);
}
#else
static __inline__ __attribute__((always_inline)) long long _InterlockedCompareExchange64(volatile long long * const Destination, const long long Exchange, const long long Comperand)
{
long long retval = Comperand;
__asm__
(
"lock; cmpxchg8b %[Destination]" :
[retval] "+A" (retval) :
[Destination] "m" (*Destination),
"b" ((unsigned long)((Exchange >> 0) & 0xFFFFFFFF)),
"c" ((unsigned long)((Exchange >> 32) & 0xFFFFFFFF)) :
"memory"
);
return retval;
}
#endif
static __inline__ __attribute__((always_inline)) long _InterlockedAddLargeStatistic(volatile long long * const Addend, const long Value)
{
__asm__