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1 #ifndef ARCH_ARM_H
2 #define ARCH_ARM_H
3 
4 #define FIO_ARCH	(arch_arm)
5 
6 #if defined (__ARM_ARCH_4__) || defined (__ARM_ARCH_4T__) \
7 	|| defined (__ARM_ARCH_5__) || defined (__ARM_ARCH_5T__) || defined (__ARM_ARCH_5E__)\
8 	|| defined (__ARM_ARCH_5TE__) || defined (__ARM_ARCH_5TEJ__) \
9 	|| defined(__ARM_ARCH_6__)  || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__)
10 #define nop             __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t")
11 #define read_barrier()	__asm__ __volatile__ ("" : : : "memory")
12 #define write_barrier()	__asm__ __volatile__ ("" : : : "memory")
13 #elif defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_8A__)
14 #define	nop		__asm__ __volatile__ ("nop")
15 #define read_barrier()	__sync_synchronize()
16 #define write_barrier()	__sync_synchronize()
17 #endif
18 
19 #endif
20