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Diffstat (limited to 'src/libs/3rdparty/botan/src/lib/utils/cpuid/cpuid.h')
| -rw-r--r-- | src/libs/3rdparty/botan/src/lib/utils/cpuid/cpuid.h | 363 |
1 files changed, 0 insertions, 363 deletions
diff --git a/src/libs/3rdparty/botan/src/lib/utils/cpuid/cpuid.h b/src/libs/3rdparty/botan/src/lib/utils/cpuid/cpuid.h deleted file mode 100644 index 95f6d687bb..0000000000 --- a/src/libs/3rdparty/botan/src/lib/utils/cpuid/cpuid.h +++ /dev/null @@ -1,363 +0,0 @@ -/* -* Runtime CPU detection -* (C) 2009,2010,2013,2017 Jack Lloyd -* -* Botan is released under the Simplified BSD License (see license.txt) -*/ - -#ifndef BOTAN_CPUID_H_ -#define BOTAN_CPUID_H_ - -#include <botan/types.h> -#include <vector> -#include <string> -#include <iosfwd> - -namespace Botan { - -/** -* A class handling runtime CPU feature detection. It is limited to -* just the features necessary to implement CPU specific code in Botan, -* rather than being a general purpose utility. -* -* This class supports: -* -* - x86 features using CPUID. x86 is also the only processor with -* accurate cache line detection currently. -* -* - PowerPC AltiVec detection on Linux, NetBSD, OpenBSD, and Darwin -* -* - ARM NEON and crypto extensions detection. On Linux and Android -* systems which support getauxval, that is used to access CPU -* feature information. Otherwise a relatively portable but -* thread-unsafe mechanism involving executing probe functions which -* catching SIGILL signal is used. -*/ -class BOTAN_PUBLIC_API(2,1) CPUID final - { - public: - /** - * Probe the CPU and see what extensions are supported - */ - static void initialize(); - - static bool has_simd_32(); - - /** - * Deprecated equivalent to - * o << "CPUID flags: " << CPUID::to_string() << "\n"; - */ - BOTAN_DEPRECATED("Use CPUID::to_string") - static void print(std::ostream& o); - - /** - * Return a possibly empty string containing list of known CPU - * extensions. Each name will be seperated by a space, and the ordering - * will be arbitrary. This list only contains values that are useful to - * Botan (for example FMA instructions are not checked). - * - * Example outputs "sse2 ssse3 rdtsc", "neon arm_aes", "altivec" - */ - static std::string to_string(); - - /** - * Return a best guess of the cache line size - */ - static size_t cache_line_size() - { - if(g_processor_features == 0) - { - initialize(); - } - return g_cache_line_size; - } - - static bool is_little_endian() - { - return endian_status() == ENDIAN_LITTLE; - } - - static bool is_big_endian() - { - return endian_status() == ENDIAN_BIG; - } - - enum CPUID_bits : uint64_t { -#if defined(BOTAN_TARGET_CPU_IS_X86_FAMILY) - // These values have no relation to cpuid bitfields - - // SIMD instruction sets - CPUID_SSE2_BIT = (1ULL << 0), - CPUID_SSSE3_BIT = (1ULL << 1), - CPUID_SSE41_BIT = (1ULL << 2), - CPUID_SSE42_BIT = (1ULL << 3), - CPUID_AVX2_BIT = (1ULL << 4), - CPUID_AVX512F_BIT = (1ULL << 5), - - // Misc useful instructions - CPUID_RDTSC_BIT = (1ULL << 10), - CPUID_BMI2_BIT = (1ULL << 11), - CPUID_ADX_BIT = (1ULL << 12), - CPUID_BMI1_BIT = (1ULL << 13), - - // Crypto-specific ISAs - CPUID_AESNI_BIT = (1ULL << 16), - CPUID_CLMUL_BIT = (1ULL << 17), - CPUID_RDRAND_BIT = (1ULL << 18), - CPUID_RDSEED_BIT = (1ULL << 19), - CPUID_SHA_BIT = (1ULL << 20), -#endif - -#if defined(BOTAN_TARGET_CPU_IS_PPC_FAMILY) - CPUID_ALTIVEC_BIT = (1ULL << 0), - CPUID_PPC_CRYPTO_BIT = (1ULL << 1), -#endif - -#if defined(BOTAN_TARGET_CPU_IS_ARM_FAMILY) - CPUID_ARM_NEON_BIT = (1ULL << 0), - CPUID_ARM_SVE_BIT = (1ULL << 1), - CPUID_ARM_AES_BIT = (1ULL << 16), - CPUID_ARM_PMULL_BIT = (1ULL << 17), - CPUID_ARM_SHA1_BIT = (1ULL << 18), - CPUID_ARM_SHA2_BIT = (1ULL << 19), - CPUID_ARM_SHA3_BIT = (1ULL << 20), - CPUID_ARM_SHA2_512_BIT = (1ULL << 21), - CPUID_ARM_SM3_BIT = (1ULL << 22), - CPUID_ARM_SM4_BIT = (1ULL << 23), -#endif - - CPUID_INITIALIZED_BIT = (1ULL << 63) - }; - -#if defined(BOTAN_TARGET_CPU_IS_PPC_FAMILY) - /** - * Check if the processor supports AltiVec/VMX - */ - static bool has_altivec() - { return has_cpuid_bit(CPUID_ALTIVEC_BIT); } - - /** - * Check if the processor supports POWER8 crypto extensions - */ - static bool has_ppc_crypto() - { return has_cpuid_bit(CPUID_PPC_CRYPTO_BIT); } - -#endif - -#if defined(BOTAN_TARGET_CPU_IS_ARM_FAMILY) - /** - * Check if the processor supports NEON SIMD - */ - static bool has_neon() - { return has_cpuid_bit(CPUID_ARM_NEON_BIT); } - - /** - * Check if the processor supports ARMv8 SVE - */ - static bool has_arm_sve() - { return has_cpuid_bit(CPUID_ARM_SVE_BIT); } - - /** - * Check if the processor supports ARMv8 SHA1 - */ - static bool has_arm_sha1() - { return has_cpuid_bit(CPUID_ARM_SHA1_BIT); } - - /** - * Check if the processor supports ARMv8 SHA2 - */ - static bool has_arm_sha2() - { return has_cpuid_bit(CPUID_ARM_SHA2_BIT); } - - /** - * Check if the processor supports ARMv8 AES - */ - static bool has_arm_aes() - { return has_cpuid_bit(CPUID_ARM_AES_BIT); } - - /** - * Check if the processor supports ARMv8 PMULL - */ - static bool has_arm_pmull() - { return has_cpuid_bit(CPUID_ARM_PMULL_BIT); } - - /** - * Check if the processor supports ARMv8 SHA-512 - */ - static bool has_arm_sha2_512() - { return has_cpuid_bit(CPUID_ARM_SHA2_512_BIT); } - - /** - * Check if the processor supports ARMv8 SHA-3 - */ - static bool has_arm_sha3() - { return has_cpuid_bit(CPUID_ARM_SHA3_BIT); } - - /** - * Check if the processor supports ARMv8 SM3 - */ - static bool has_arm_sm3() - { return has_cpuid_bit(CPUID_ARM_SM3_BIT); } - - /** - * Check if the processor supports ARMv8 SM4 - */ - static bool has_arm_sm4() - { return has_cpuid_bit(CPUID_ARM_SM4_BIT); } - -#endif - -#if defined(BOTAN_TARGET_CPU_IS_X86_FAMILY) - - /** - * Check if the processor supports RDTSC - */ - static bool has_rdtsc() - { return has_cpuid_bit(CPUID_RDTSC_BIT); } - - /** - * Check if the processor supports SSE2 - */ - static bool has_sse2() - { return has_cpuid_bit(CPUID_SSE2_BIT); } - - /** - * Check if the processor supports SSSE3 - */ - static bool has_ssse3() - { return has_cpuid_bit(CPUID_SSSE3_BIT); } - - /** - * Check if the processor supports SSE4.1 - */ - static bool has_sse41() - { return has_cpuid_bit(CPUID_SSE41_BIT); } - - /** - * Check if the processor supports SSE4.2 - */ - static bool has_sse42() - { return has_cpuid_bit(CPUID_SSE42_BIT); } - - /** - * Check if the processor supports AVX2 - */ - static bool has_avx2() - { return has_cpuid_bit(CPUID_AVX2_BIT); } - - /** - * Check if the processor supports AVX-512F - */ - static bool has_avx512f() - { return has_cpuid_bit(CPUID_AVX512F_BIT); } - - /** - * Check if the processor supports BMI1 - */ - static bool has_bmi1() - { return has_cpuid_bit(CPUID_BMI1_BIT); } - - /** - * Check if the processor supports BMI2 - */ - static bool has_bmi2() - { return has_cpuid_bit(CPUID_BMI2_BIT); } - - /** - * Check if the processor supports AES-NI - */ - static bool has_aes_ni() - { return has_cpuid_bit(CPUID_AESNI_BIT); } - - /** - * Check if the processor supports CLMUL - */ - static bool has_clmul() - { return has_cpuid_bit(CPUID_CLMUL_BIT); } - - /** - * Check if the processor supports Intel SHA extension - */ - static bool has_intel_sha() - { return has_cpuid_bit(CPUID_SHA_BIT); } - - /** - * Check if the processor supports ADX extension - */ - static bool has_adx() - { return has_cpuid_bit(CPUID_ADX_BIT); } - - /** - * Check if the processor supports RDRAND - */ - static bool has_rdrand() - { return has_cpuid_bit(CPUID_RDRAND_BIT); } - - /** - * Check if the processor supports RDSEED - */ - static bool has_rdseed() - { return has_cpuid_bit(CPUID_RDSEED_BIT); } -#endif - - /* - * Clear a CPUID bit - * Call CPUID::initialize to reset - * - * This is only exposed for testing, don't use unless you know - * what you are doing. - */ - static void clear_cpuid_bit(CPUID_bits bit) - { - const uint64_t mask = ~(static_cast<uint64_t>(bit)); - g_processor_features &= mask; - } - - /* - * Don't call this function, use CPUID::has_xxx above - * It is only exposed for the tests. - */ - static bool has_cpuid_bit(CPUID_bits elem) - { - if(g_processor_features == 0) - initialize(); - - const uint64_t elem64 = static_cast<uint64_t>(elem); - return ((g_processor_features & elem64) == elem64); - } - - static std::vector<CPUID::CPUID_bits> bit_from_string(const std::string& tok); - private: - enum Endian_status : uint32_t { - ENDIAN_UNKNOWN = 0x00000000, - ENDIAN_BIG = 0x01234567, - ENDIAN_LITTLE = 0x67452301, - }; - -#if defined(BOTAN_TARGET_CPU_IS_PPC_FAMILY) || \ - defined(BOTAN_TARGET_CPU_IS_ARM_FAMILY) || \ - defined(BOTAN_TARGET_CPU_IS_X86_FAMILY) - - static uint64_t detect_cpu_features(size_t* cache_line_size); - -#endif - - static Endian_status runtime_check_endian(); - - static Endian_status endian_status() - { - if(g_endian_status == ENDIAN_UNKNOWN) - { - g_endian_status = runtime_check_endian(); - } - return g_endian_status; - } - - static uint64_t g_processor_features; - static size_t g_cache_line_size; - static Endian_status g_endian_status; - }; - -} - -#endif |