diff options
Diffstat (limited to 'winsup/w32api/include/winnt.h')
| -rw-r--r-- | winsup/w32api/include/winnt.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/winsup/w32api/include/winnt.h b/winsup/w32api/include/winnt.h index b31274bbe..24ce2de35 100644 --- a/winsup/w32api/include/winnt.h +++ b/winsup/w32api/include/winnt.h @@ -4035,6 +4035,22 @@ struct _TEB * NtCurrentTeb(void); #endif /* __GNUC__ */ #endif /* _X86_ */ +#if _WIN32_WINNT >= _WIN32_WINNT_VISTA +# if defined(_AMD64_) || defined(__X86_64) +# define MemoryBarrier __faststorefence +# elif defined(_IA64_) +# define MemoryBarrier __mf +# else + FORCEINLINE VOID MemoryBarrier (VOID) { + LONG Barrier = 0; + __asm__ __volatile__("xchgl %%eax,%0 " + :"=r" (Barrier)); + } +# endif +#else +# define MemoryBarrier +#endif + #endif /* RC_INVOKED */ #ifdef __cplusplus |