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authormadmaxoft <github@xoft.cz>2014-01-22 22:26:40 +0100
committermadmaxoft <github@xoft.cz>2014-01-22 22:26:40 +0100
commit34f13d589a2ebbcae9230732c7a763b3cdd88b41 (patch)
tree4f7bad4f90ca8f7a896d83951804f0207082cafb /lib/cryptopp/cpu.cpp
parentReplacing CryptoPP with PolarSSL. (diff)
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Diffstat (limited to '')
-rw-r--r--lib/cryptopp/cpu.cpp199
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