| 1 | #ifndef ARCH_AARCH64_H |
| 2 | #define ARCH_AARCH64_H |
| 3 | |
| 4 | #include <unistd.h> |
| 5 | #include <stdlib.h> |
| 6 | #include <sys/types.h> |
| 7 | #include <sys/wait.h> |
| 8 | |
| 9 | #define FIO_ARCH (arch_aarch64) |
| 10 | |
| 11 | #define nop do { __asm__ __volatile__ ("yield"); } while (0) |
| 12 | #define read_barrier() do { __sync_synchronize(); } while (0) |
| 13 | #define write_barrier() do { __sync_synchronize(); } while (0) |
| 14 | |
| 15 | static inline int arch_ffz(unsigned long bitmask) |
| 16 | { |
| 17 | unsigned long count, reversed_bits; |
| 18 | if (~bitmask == 0) /* ffz() in lib/ffz.h does this. */ |
| 19 | return 63; |
| 20 | |
| 21 | __asm__ __volatile__ ("rbit %1, %2\n" |
| 22 | "clz %0, %1\n" : |
| 23 | "=r"(count), "=&r"(reversed_bits) : |
| 24 | "r"(~bitmask)); |
| 25 | return count; |
| 26 | } |
| 27 | |
| 28 | #define ARCH_HAVE_FFZ |
| 29 | |
| 30 | static inline unsigned long long get_cpu_clock(void) |
| 31 | { |
| 32 | unsigned long val; |
| 33 | |
| 34 | asm volatile("mrs %0, cntvct_el0" : "=r" (val)); |
| 35 | return val; |
| 36 | } |
| 37 | #define ARCH_HAVE_CPU_CLOCK |
| 38 | |
| 39 | #define ARCH_HAVE_INIT |
| 40 | extern bool tsc_reliable; |
| 41 | static inline int arch_init(char *envp[]) |
| 42 | { |
| 43 | tsc_reliable = true; |
| 44 | return 0; |
| 45 | } |
| 46 | |
| 47 | #endif |