diff options
Diffstat (limited to 'src/Crypto/cpu.c')
| -rw-r--r-- | src/Crypto/cpu.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/Crypto/cpu.c b/src/Crypto/cpu.c index e611e9bb..85278a92 100644 --- a/src/Crypto/cpu.c +++ b/src/Crypto/cpu.c @@ -468,4 +468,42 @@ void DisableCPUExtendedFeatures () } #endif +#if CRYPTOPP_BOOL_ARMV8 + +volatile int g_hasAESARM = 0; + +#ifndef HWCAP_AES +# define HWCAP_AES (1 << 3) +#endif + +inline int CPU_QueryAES() +{ +#if defined(CRYPTOPP_ARM_AES_AVAILABLE) +#if defined(__linux__) && defined(__aarch64__) + if ((getauxval(AT_HWCAP) & HWCAP_AES) != 0) + return 1; +#elif defined(__APPLE__) && defined(__aarch64__) + // Apple Sillcon (M1) and later + return 1; +#elif defined(_WIN32) && defined(_M_ARM64) +#ifdef TC_WINDOWS_DRIVER + if (ExIsProcessorFeaturePresent(PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE) != 0) + return 1; +#else + if (IsProcessorFeaturePresent(PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE) != 0) + return 1; +#endif +#endif + return 0; +#else + return 0; +#endif +} + +void DetectArmFeatures() +{ + g_hasAESARM = CPU_QueryAES(); +} + +#endif
\ No newline at end of file |