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Implement detection of new CPU features: AVX2 and BMI2

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This commit is contained in:
Mounir IDRASSI
2016-10-13 10:11:02 +02:00
parent 2edd12fe22
commit 15b6c7d3b7
2 changed files with 7 additions and 1 deletions
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4
src/Crypto/cpu.c
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@@ -189,7 +189,7 @@ static int TrySSE2()
int g_x86DetectionDone = 0;
int g_hasISSE = 0, g_hasSSE2 = 0, g_hasSSSE3 = 0, g_hasMMX = 0, g_hasAESNI = 0, g_hasCLMUL = 0, g_isP4 = 0;
int g_hasAVX = 0, g_hasSSE42 = 0, g_hasSSE41 = 0;
int g_hasAVX = 0, g_hasAVX2 = 0, g_hasBMI2 = 0, g_hasSSE42 = 0, g_hasSSE41 = 0;
uint32 g_cacheLineSize = CRYPTOPP_L1_CACHE_LINE_SIZE;
VC_INLINE int IsIntel(const uint32 output[4])
@@ -292,6 +292,8 @@ void DetectX86Features()
g_hasMMX = (cpuid1[3] & (1 << 23)) != 0;
if ((cpuid1[3] & (1 << 26)) != 0)
g_hasSSE2 = TrySSE2();
g_hasAVX2 = g_hasSSE2 && (cpuid1[1] & (1 << 5));
g_hasBMI2 = g_hasSSE2 && (cpuid1[1] & (1 << 8));
g_hasAVX = g_hasSSE2 && (cpuid1[2] & (1 << 28));
g_hasSSE42 = g_hasSSE2 && (cpuid1[2] & (1 << 20));
g_hasSSE41 = g_hasSSE2 && (cpuid1[2] & (1 << 19));