diff options
Diffstat (limited to 'mysys/crc32/crc32_arm64.c')
| -rw-r--r-- | mysys/crc32/crc32_arm64.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/mysys/crc32/crc32_arm64.c b/mysys/crc32/crc32_arm64.c index 02c43c350c8..62606c7ddea 100644 --- a/mysys/crc32/crc32_arm64.c +++ b/mysys/crc32/crc32_arm64.c @@ -4,6 +4,29 @@ #if defined(HAVE_ARMV8_CRC) +#if defined(__APPLE__) +#include <sys/sysctl.h> + +static int pmull_supported; + +int crc32_aarch64_available(void) +{ + int ret; + size_t len = sizeof(ret); + if (sysctlbyname("hw.optional.armv8_crc32", &ret, &len, NULL, 0) == -1) + return 0; + return ret; +} + +const char *crc32c_aarch64_available(void) +{ + if (crc32_aarch64_available() == 0) + return NULL; + pmull_supported = 1; + return "Using ARMv8 crc32 + pmull instructions"; +} + +#else #include <sys/auxv.h> #if defined(__FreeBSD__) static unsigned long getauxval(unsigned int key) @@ -50,6 +73,7 @@ const char *crc32c_aarch64_available(void) return "Using ARMv8 crc32 instructions"; } +#endif /* __APPLE__ */ #endif /* HAVE_ARMV8_CRC */ #ifndef HAVE_ARMV8_CRC_CRYPTO_INTRINSICS |