diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Makefile.am | 1 | ||||
| -rw-r--r-- | src/compat/cpuid.h | 24 | ||||
| -rw-r--r-- | src/crypto/sha256.cpp | 20 | ||||
| -rw-r--r-- | src/random.cpp | 17 |
4 files changed, 32 insertions, 30 deletions
diff --git a/src/Makefile.am b/src/Makefile.am index dd67bf3240..b04d2ecbbf 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -119,6 +119,7 @@ BITCOIN_CORE_H = \ compat.h \ compat/assumptions.h \ compat/byteswap.h \ + compat/cpuid.h \ compat/endian.h \ compat/sanity.h \ compressor.h \ diff --git a/src/compat/cpuid.h b/src/compat/cpuid.h new file mode 100644 index 0000000000..0877ad47d3 --- /dev/null +++ b/src/compat/cpuid.h @@ -0,0 +1,24 @@ +// Copyright (c) 2017-2019 The Bitcoin Core developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#ifndef BITCOIN_COMPAT_CPUID_H +#define BITCOIN_COMPAT_CPUID_H + +#if defined(__x86_64__) || defined(__amd64__) || defined(__i386__) +#define HAVE_GETCPUID + +#include <cpuid.h> + +// We can't use cpuid.h's __get_cpuid as it does not support subleafs. +void static inline GetCPUID(uint32_t leaf, uint32_t subleaf, uint32_t& a, uint32_t& b, uint32_t& c, uint32_t& d) +{ +#ifdef __GNUC__ + __cpuid_count(leaf, subleaf, a, b, c, d); +#else + __asm__ ("cpuid" : "=a"(a), "=b"(b), "=c"(c), "=d"(d) : "0"(leaf), "2"(subleaf)); +#endif +} + +#endif // defined(__x86_64__) || defined(__amd64__) || defined(__i386__) +#endif // BITCOIN_COMPAT_CPUID_H diff --git a/src/crypto/sha256.cpp b/src/crypto/sha256.cpp index 3257ee7f97..dda7e5230f 100644 --- a/src/crypto/sha256.cpp +++ b/src/crypto/sha256.cpp @@ -8,9 +8,10 @@ #include <assert.h> #include <string.h> +#include <compat/cpuid.h> + #if defined(__x86_64__) || defined(__amd64__) || defined(__i386__) #if defined(USE_ASM) -#include <cpuid.h> namespace sha256_sse4 { void Transform(uint32_t* s, const unsigned char* chunk, size_t blocks); @@ -546,18 +547,7 @@ bool SelfTest() { return true; } - #if defined(USE_ASM) && (defined(__x86_64__) || defined(__amd64__) || defined(__i386__)) -// We can't use cpuid.h's __get_cpuid as it does not support subleafs. -void inline cpuid(uint32_t leaf, uint32_t subleaf, uint32_t& a, uint32_t& b, uint32_t& c, uint32_t& d) -{ -#ifdef __GNUC__ - __cpuid_count(leaf, subleaf, a, b, c, d); -#else - __asm__ ("cpuid" : "=a"(a), "=b"(b), "=c"(c), "=d"(d) : "0"(leaf), "2"(subleaf)); -#endif -} - /** Check whether the OS has enabled AVX registers. */ bool AVXEnabled() { @@ -572,7 +562,7 @@ bool AVXEnabled() std::string SHA256AutoDetect() { std::string ret = "standard"; -#if defined(USE_ASM) && (defined(__x86_64__) || defined(__amd64__) || defined(__i386__)) +#if defined(USE_ASM) && defined(HAVE_GETCPUID) bool have_sse4 = false; bool have_xsave = false; bool have_avx = false; @@ -589,7 +579,7 @@ std::string SHA256AutoDetect() (void)enabled_avx; uint32_t eax, ebx, ecx, edx; - cpuid(1, 0, eax, ebx, ecx, edx); + GetCPUID(1, 0, eax, ebx, ecx, edx); have_sse4 = (ecx >> 19) & 1; have_xsave = (ecx >> 27) & 1; have_avx = (ecx >> 28) & 1; @@ -597,7 +587,7 @@ std::string SHA256AutoDetect() enabled_avx = AVXEnabled(); } if (have_sse4) { - cpuid(7, 0, eax, ebx, ecx, edx); + GetCPUID(7, 0, eax, ebx, ecx, edx); have_avx2 = (ebx >> 5) & 1; have_shani = (ebx >> 29) & 1; } diff --git a/src/random.cpp b/src/random.cpp index 25ff7b3198..6f162a7cf0 100644 --- a/src/random.cpp +++ b/src/random.cpp @@ -5,6 +5,7 @@ #include <random.h> +#include <compat/cpuid.h> #include <crypto/sha512.h> #include <support/cleanse.h> #ifdef WIN32 @@ -42,11 +43,6 @@ #include <sys/sysctl.h> #endif - -#if defined(__x86_64__) || defined(__amd64__) || defined(__i386__) -#include <cpuid.h> -#endif - #include <openssl/err.h> #include <openssl/rand.h> #include <openssl/conf.h> @@ -77,7 +73,7 @@ static inline int64_t GetPerformanceCounter() noexcept #endif } -#if defined(__x86_64__) || defined(__amd64__) || defined(__i386__) +#ifdef HAVE_GETCPUID static bool g_rdrand_supported = false; static bool g_rdseed_supported = false; static constexpr uint32_t CPUID_F1_ECX_RDRAND = 0x40000000; @@ -88,15 +84,6 @@ static_assert(CPUID_F1_ECX_RDRAND == bit_RDRND, "Unexpected value for bit_RDRND" #ifdef bit_RDSEED static_assert(CPUID_F7_EBX_RDSEED == bit_RDSEED, "Unexpected value for bit_RDSEED"); #endif -static void inline GetCPUID(uint32_t leaf, uint32_t subleaf, uint32_t& a, uint32_t& b, uint32_t& c, uint32_t& d) -{ - // We can't use __get_cpuid as it doesn't support subleafs. -#ifdef __GNUC__ - __cpuid_count(leaf, subleaf, a, b, c, d); -#else - __asm__ ("cpuid" : "=a"(a), "=b"(b), "=c"(c), "=d"(d) : "0"(leaf), "2"(subleaf)); -#endif -} static void InitHardwareRand() { |