| #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 |
