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#ifndef ARCH_AARCH64_H
#define ARCH_AARCH64_H
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#define FIO_ARCH (arch_aarch64)
#define nop do { __asm__ __volatile__ ("yield"); } while (0)
#define read_barrier() do { __sync_synchronize(); } while (0)
#define write_barrier() do { __sync_synchronize(); } while (0)
static inline int arch_ffz(unsigned long bitmask)
{
unsigned long count, reversed_bits;
if (~bitmask == 0) /* ffz() in lib/ffz.h does this. */
return 63;
__asm__ __volatile__ ("rbit %1, %2\n"
"clz %0, %1\n" :
"=r"(count), "=&r"(reversed_bits) :
"r"(~bitmask));
return count;
}
#define ARCH_HAVE_FFZ
#endif
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