#define nop __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t")
#define read_barrier() __asm__ __volatile__ ("" : : : "memory")
#define write_barrier() __asm__ __volatile__ ("" : : : "memory")
-#elif defined(__ARM_ARCH_7A__)
+#elif defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_8A__)
#define nop __asm__ __volatile__ ("nop")
#define read_barrier() __sync_synchronize()
#define write_barrier() __sync_synchronize()