5 #define store_barrier() asm volatile ("mf" ::: "memory")
6 #elif defined(__x86_64__)
7 #define store_barrier() asm volatile("sfence" ::: "memory")
8 #elif defined(__i386__)
9 #define store_barrier() asm volatile ("": : :"memory")
10 #elif defined(__ppc__) || defined(__powerpc__)
11 #define store_barrier() asm volatile ("eieio" : : : "memory")
12 #elif defined(__s390__) || defined(__s390x__)
13 #define store_barrier() asm volatile ("bcr 15,0" : : : "memory")
14 #elif defined(__alpha__)
15 #define store_barrier() asm volatile("wmb": : :"memory")
16 #elif defined(__hppa__)
17 #define store_barrier() asm volatile("":::"memory")
18 #elif defined(__sparc__)
19 #define store_barrier() asm volatile("":::"memory")
20 #elif defined(__m68000__) || defined(__m68k__) || defined(mc68000) || defined(_M_M68K)
21 #define store_barrier() asm volatile("":::"memory")
22 #elif defined(__mips__) /* also mipsel */
23 #define store_barrier() do { } while(0)
24 #elif defined(__arm__)
25 /* taken from linux/arch/arm/kernel/entry-armv.S, thanks to pbrook! */
26 typedef void (__kernel_dmb_t)(void);
27 #define __kernel_dmb (*(__kernel_dmb_t *)0xffff0fa0)
28 #define store_barrier() __kernel_dmb()
30 #error Define store_barrier() for your CPU