diff options
Diffstat (limited to 'lib/cryptopp/cpu.cpp')
| -rw-r--r-- | lib/cryptopp/cpu.cpp | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/lib/cryptopp/cpu.cpp b/lib/cryptopp/cpu.cpp deleted file mode 100644 index 3610a7c8e..000000000 --- a/lib/cryptopp/cpu.cpp +++ /dev/null @@ -1,199 +0,0 @@ -// cpu.cpp - written and placed in the public domain by Wei Dai - -#include "pch.h" - -#ifndef CRYPTOPP_IMPORTS - -#include "cpu.h" -#include "misc.h" -#include <algorithm> - -#ifndef CRYPTOPP_MS_STYLE_INLINE_ASSEMBLY -#include <signal.h> -#include <setjmp.h> -#endif - -#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE -#include <emmintrin.h> -#endif - -NAMESPACE_BEGIN(CryptoPP) - -#ifdef CRYPTOPP_CPUID_AVAILABLE - -#if _MSC_VER >= 1400 && CRYPTOPP_BOOL_X64 - -bool CpuId(word32 input, word32 *output) -{ - __cpuid((int *)output, input); - return true; -} - -#else - -#ifndef CRYPTOPP_MS_STYLE_INLINE_ASSEMBLY -extern "C" { -typedef void (*SigHandler)(int); - -static jmp_buf s_jmpNoCPUID; -static void SigIllHandlerCPUID(int) -{ - longjmp(s_jmpNoCPUID, 1); -} - -static jmp_buf s_jmpNoSSE2; -static void SigIllHandlerSSE2(int) -{ - longjmp(s_jmpNoSSE2, 1); -} -} -#endif - -bool CpuId(word32 input, word32 *output) -{ -#ifdef CRYPTOPP_MS_STYLE_INLINE_ASSEMBLY - __try - { - __asm - { - mov eax, input - cpuid - mov edi, output - mov [edi], eax - mov [edi+4], ebx - mov [edi+8], ecx - mov [edi+12], edx - } - } - __except (1) - { - return false; - } - return true; -#else - SigHandler oldHandler = signal(SIGILL, SigIllHandlerCPUID); - if (oldHandler == SIG_ERR) - return false; - - bool result = true; - if (setjmp(s_jmpNoCPUID)) - result = false; - else - { - asm - ( - // save ebx in case -fPIC is being used -#if CRYPTOPP_BOOL_X86 - "push %%ebx; cpuid; mov %%ebx, %%edi; pop %%ebx" -#else - "pushq %%rbx; cpuid; mov %%ebx, %%edi; popq %%rbx" -#endif - : "=a" (output[0]), "=D" (output[1]), "=c" (output[2]), "=d" (output[3]) - : "a" (input) - ); - } - - signal(SIGILL, oldHandler); - return result; -#endif -} - -#endif - -static bool TrySSE2() -{ -#if CRYPTOPP_BOOL_X64 - return true; -#elif defined(CRYPTOPP_MS_STYLE_INLINE_ASSEMBLY) - __try - { -#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE - AS2(por xmm0, xmm0) // executing SSE2 instruction -#elif CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE - __m128i x = _mm_setzero_si128(); - return _mm_cvtsi128_si32(x) == 0; -#endif - } - __except (1) - { - return false; - } - return true; -#else - SigHandler oldHandler = signal(SIGILL, SigIllHandlerSSE2); - if (oldHandler == SIG_ERR) - return false; - - bool result = true; - if (setjmp(s_jmpNoSSE2)) - result = false; - else - { -#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE - __asm __volatile ("por %xmm0, %xmm0"); -#elif CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE - __m128i x = _mm_setzero_si128(); - result = _mm_cvtsi128_si32(x) == 0; -#endif - } - - signal(SIGILL, oldHandler); - return result; -#endif -} - -bool g_x86DetectionDone = false; -bool g_hasISSE = false, g_hasSSE2 = false, g_hasSSSE3 = false, g_hasMMX = false, g_hasAESNI = false, g_hasCLMUL = false, g_isP4 = false; -word32 g_cacheLineSize = CRYPTOPP_L1_CACHE_LINE_SIZE; - -void DetectX86Features() -{ - word32 cpuid[4], cpuid1[4]; - if (!CpuId(0, cpuid)) - return; - if (!CpuId(1, cpuid1)) - return; - - g_hasMMX = (cpuid1[3] & (1 << 23)) != 0; - if ((cpuid1[3] & (1 << 26)) != 0) - g_hasSSE2 = TrySSE2(); - g_hasSSSE3 = g_hasSSE2 && (cpuid1[2] & (1<<9)); - g_hasAESNI = g_hasSSE2 && (cpuid1[2] & (1<<25)); - g_hasCLMUL = g_hasSSE2 && (cpuid1[2] & (1<<1)); - - if ((cpuid1[3] & (1 << 25)) != 0) - g_hasISSE = true; - else - { - word32 cpuid2[4]; - CpuId(0x080000000, cpuid2); - if (cpuid2[0] >= 0x080000001) - { - CpuId(0x080000001, cpuid2); - g_hasISSE = (cpuid2[3] & (1 << 22)) != 0; - } - } - - std::swap(cpuid[2], cpuid[3]); - if (memcmp(cpuid+1, "GenuineIntel", 12) == 0) - { - g_isP4 = ((cpuid1[0] >> 8) & 0xf) == 0xf; - g_cacheLineSize = 8 * GETBYTE(cpuid1[1], 1); - } - else if (memcmp(cpuid+1, "AuthenticAMD", 12) == 0) - { - CpuId(0x80000005, cpuid); - g_cacheLineSize = GETBYTE(cpuid[2], 0); - } - - if (!g_cacheLineSize) - g_cacheLineSize = CRYPTOPP_L1_CACHE_LINE_SIZE; - - g_x86DetectionDone = true; -} - -#endif - -NAMESPACE_END - -#endif |