shadps4-emu/ext-cryptopp
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Add X86 SHA cpu feature detection

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This commit is contained in:
Jeffrey Walton 2016-10-26 22:35:24 -04:00
parent 83d0332766
commit ac01277d93
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GPG Key ID: B36AB348921B1838
3 changed files with 18 additions and 3 deletions
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8
cpu.cpp
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@ -185,8 +185,8 @@ static bool TrySSE2()
bool CRYPTOPP_SECTION_INIT g_x86DetectionDone = false;
bool CRYPTOPP_SECTION_INIT g_hasMMX = false, CRYPTOPP_SECTION_INIT g_hasISSE = false, CRYPTOPP_SECTION_INIT g_hasSSE2 = false, CRYPTOPP_SECTION_INIT g_hasSSSE3 = false;
bool CRYPTOPP_SECTION_INIT g_hasSSE4 = false, CRYPTOPP_SECTION_INIT g_hasAESNI = false, CRYPTOPP_SECTION_INIT g_hasCLMUL = false, CRYPTOPP_SECTION_INIT g_isP4 = false;
bool CRYPTOPP_SECTION_INIT g_hasRDRAND = false, CRYPTOPP_SECTION_INIT g_hasRDSEED = false;
bool CRYPTOPP_SECTION_INIT g_hasSSE4 = false, CRYPTOPP_SECTION_INIT g_hasAESNI = false, CRYPTOPP_SECTION_INIT g_hasCLMUL = false, CRYPTOPP_SECTION_INIT g_hasSHA = false;
bool CRYPTOPP_SECTION_INIT g_hasRDRAND = false, CRYPTOPP_SECTION_INIT g_hasRDSEED = false, CRYPTOPP_SECTION_INIT g_isP4 = false;
bool CRYPTOPP_SECTION_INIT g_hasPadlockRNG = false, CRYPTOPP_SECTION_INIT g_hasPadlockACE = false, CRYPTOPP_SECTION_INIT g_hasPadlockACE2 = false;
bool CRYPTOPP_SECTION_INIT g_hasPadlockPHE = false, CRYPTOPP_SECTION_INIT g_hasPadlockPMM = false;
word32 CRYPTOPP_SECTION_INIT g_cacheLineSize = CRYPTOPP_L1_CACHE_LINE_SIZE;
@ -254,6 +254,7 @@ void DetectX86Features()
{
static const unsigned int RDRAND_FLAG = (1 << 30);
static const unsigned int RDSEED_FLAG = (1 << 18);
static const unsigned int SHA_FLAG = (1 << 29);
g_isP4 = ((cpuid1[0] >> 8) & 0xf) == 0xf;
g_cacheLineSize = 8 * GETBYTE(cpuid1[1], 1);
@ -263,7 +264,10 @@ void DetectX86Features()
{
word32 cpuid3[4];
if (CpuId(7, cpuid3))
{
g_hasRDSEED = !!(cpuid3[1] /*EBX*/ & RDSEED_FLAG);
g_hasSHA = !!(cpuid3[1] /*EBX*/ & SHA_FLAG);
}
}
}
else if (IsAMD(cpuid))

11
cpu.h
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@ -109,6 +109,7 @@ extern CRYPTOPP_DLL bool g_hasSSSE3;
extern CRYPTOPP_DLL bool g_hasSSE4;
extern CRYPTOPP_DLL bool g_hasAESNI;
extern CRYPTOPP_DLL bool g_hasCLMUL;
extern CRYPTOPP_DLL bool g_hasSHA;
extern CRYPTOPP_DLL bool g_isP4;
extern CRYPTOPP_DLL bool g_hasRDRAND;
extern CRYPTOPP_DLL bool g_hasRDSEED;
@ -209,6 +210,16 @@ inline bool HasCLMUL()
return g_hasCLMUL;
}
//! \brief Determines SHA availability
//! \returns true if SHA is determined to be available, false otherwise
//! \details HasSHA() is a runtime check performed using CPUID
inline bool HasSHA()
{
if (!g_x86DetectionDone)
DetectX86Features();
return g_hasSHA;
}
//! \brief Determines if the CPU is an Intel P4
//! \returns true if the CPU is a P4, false otherwise
//! \details IsP4() is a runtime check performed using CPUID

2
validat1.cpp
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@ -310,7 +310,7 @@ bool TestSettings()
cout << "hasMMX == " << hasMMX << ", hasISSE == " << hasISSE << ", hasSSE2 == " << hasSSE2 << ", hasSSSE3 == " << hasSSSE3 << ", hasSSE4 == " << hasSSE4;
cout << ", hasAESNI == " << HasAESNI() << ", hasCLMUL == " << HasCLMUL() << ", hasRDRAND == " << HasRDRAND() << ", hasRDSEED == " << HasRDSEED();
cout << ", isP4 == " << isP4 << ", cacheLineSize == " << cacheLineSize << endl;
cout << ", hasSHA == " << HasSHA() << ", isP4 == " << isP4 << ", cacheLineSize == " << cacheLineSize << endl;
#elif (CRYPTOPP_BOOL_ARM32 || CRYPTOPP_BOOL_ARM64)
bool hasNEON = HasNEON();