1#ifndef __ASM_CRIS_BARRIER_H 2#define __ASM_CRIS_BARRIER_H 3 4#define nop() __asm__ __volatile__ ("nop"); 5 6#define barrier() __asm__ __volatile__("": : :"memory") 7#define mb() barrier() 8#define rmb() mb() 9#define wmb() mb() 10#define read_barrier_depends() do { } while(0) 11#define set_mb(var, value) do { var = value; mb(); } while (0) 12 13#ifdef CONFIG_SMP 14#define smp_mb() mb() 15#define smp_rmb() rmb() 16#define smp_wmb() wmb() 17#define smp_read_barrier_depends() read_barrier_depends() 18#else 19#define smp_mb() barrier() 20#define smp_rmb() barrier() 21#define smp_wmb() barrier() 22#define smp_read_barrier_depends() do { } while(0) 23#endif 24 25#endif /* __ASM_CRIS_BARRIER_H */ 26