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Diffstat (limited to 'barrier.h')
| -rw-r--r-- | barrier.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/barrier.h b/barrier.h new file mode 100644 index 0000000..14d06b5 --- /dev/null +++ b/barrier.h @@ -0,0 +1,33 @@ +#ifndef BARRIER_H +#define BARRIER_H + +#if defined(__ia64__) + #define store_barrier() asm volatile ("mf" ::: "memory") +#elif defined(__x86_64__) + #define store_barrier() asm volatile("sfence" ::: "memory") +#elif defined(__i386__) + #define store_barrier() asm volatile ("": : :"memory") +#elif defined(__ppc__) || defined(__powerpc__) + #define store_barrier() asm volatile ("eieio" : : : "memory") +#elif defined(__s390__) || defined(__s390x__) + #define store_barrier() asm volatile ("bcr 15,0" : : : "memory") +#elif defined(__alpha__) + #define store_barrier() asm volatile("wmb": : :"memory") +#elif defined(__hppa__) + #define store_barrier() asm volatile("":::"memory") +#elif defined(__sparc__) + #define store_barrier() asm volatile("":::"memory") +#elif defined(__m68000__) || defined(__m68k__) || defined(mc68000) || defined(_M_M68K) + #define store_barrier() asm volatile("":::"memory") +#elif defined(__mips__) /* also mipsel */ + #define store_barrier() do { } while(0) +#elif defined(__arm__) + /* taken from linux/arch/arm/kernel/entry-armv.S, thanks to pbrook! */ + typedef void (__kernel_dmb_t)(void); + #define __kernel_dmb (*(__kernel_dmb_t *)0xffff0fa0) + #define store_barrier() __kernel_dmb() +#else + #error Define store_barrier() for your CPU +#endif + +#endif |