diff options
| author | Pavol Rusnak <pavol@rusnak.io> | 2022-01-20 18:57:27 +0100 |
|---|---|---|
| committer | Pavol Rusnak <pavol@rusnak.io> | 2022-01-28 09:43:56 +0100 |
| commit | 48a72fa81f80c8a3c7c6de8339b5feb361dece1c (patch) | |
| tree | 3e9cde8f4ba87690949db31bdf2f821b7e7587e3 /src/crypto/sha256.cpp | |
| parent | c2b79342506e24e9b7100fb7a6025dc870375ef6 (diff) | |
| download | bitcoin-48a72fa81f80c8a3c7c6de8339b5feb361dece1c.tar.xz | |
Add sha256_arm_shani to build system
Also rename AArch64 intrinsics to ARMv8 intrinsics
as these are not necessarily limited to 64-bit
Diffstat (limited to 'src/crypto/sha256.cpp')
| -rw-r--r-- | src/crypto/sha256.cpp | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/crypto/sha256.cpp b/src/crypto/sha256.cpp index 48ee121e2d..7ba86c7ffa 100644 --- a/src/crypto/sha256.cpp +++ b/src/crypto/sha256.cpp @@ -10,6 +10,16 @@ #include <compat/cpuid.h> +#if defined(__linux__) && defined(ENABLE_ARM_SHANI) && !defined(BUILD_BITCOIN_INTERNAL) +#include <sys/auxv.h> +#include <asm/hwcap.h> +#endif + +#if defined(MAC_OSX) && defined(ENABLE_ARM_SHANI) && !defined(BUILD_BITCOIN_INTERNAL) +#include <sys/types.h> +#include <sys/sysctl.h> +#endif + #if defined(__x86_64__) || defined(__amd64__) || defined(__i386__) #if defined(USE_ASM) namespace sha256_sse4 @@ -39,6 +49,11 @@ namespace sha256_x86_shani void Transform(uint32_t* s, const unsigned char* chunk, size_t blocks); } +namespace sha256_arm_shani +{ +void Transform(uint32_t* s, const unsigned char* chunk, size_t blocks); +} + // Internal implementation code. namespace { @@ -623,6 +638,37 @@ std::string SHA256AutoDetect() #endif #endif +#if defined(ENABLE_ARM_SHANI) && !defined(BUILD_BITCOIN_INTERNAL) + bool have_arm_shani = false; + +#if defined(__linux__) +#if defined(__arm__) // 32-bit + if (getauxval(AT_HWCAP2) & HWCAP2_SHA2) { + have_arm_shani = true; + } +#endif +#if defined(__aarch64__) // 64-bit + if (getauxval(AT_HWCAP) & HWCAP_SHA2) { + have_arm_shani = true; + } +#endif +#endif + +#if defined(MAC_OSX) + int val = 0; + size_t len = sizeof(val); + if (sysctlbyname("hw.optional.arm.FEAT_SHA256", &val, &len, nullptr, 0) == 0) { + have_arm_shani = val != 0; + } +#endif + + if (have_arm_shani) { + Transform = sha256_arm_shani::Transform; + TransformD64 = TransformD64Wrapper<sha256_arm_shani::Transform>; + ret = "arm_shani(1way)"; + } +#endif + assert(SelfTest()); return ret; } |