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Add highestFeature check to cpuid users

This commit is contained in:
Jack Andersen 2018-01-01 18:23:04 -10:00
parent 10d389ffda
commit c466fd21d1
1 changed files with 18 additions and 13 deletions
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9
src/Math.cpp
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@ -45,6 +45,7 @@ void detectCPU()
int regs[4];
getCpuInfo(0, regs);
int highestFeature = regs[0];
*reinterpret_cast<int*>((char*)g_cpuFeatures.cpuVendor) = regs[1];
*reinterpret_cast<int*>((char*)g_cpuFeatures.cpuVendor + 4) = regs[3];
*reinterpret_cast<int*>((char*)g_cpuFeatures.cpuVendor + 8) = regs[2];
@ -64,8 +65,9 @@ void detectCPU()
}
}
if (highestFeature >= 1)
{
getCpuInfo(1, regs);
memset((bool*)&g_cpuFeatures.AESNI, ((regs[2] & 0x02000000) != 0), 1);
memset((bool*)&g_cpuFeatures.SSE1, ((regs[3] & 0x02000000) != 0), 1);
memset((bool*)&g_cpuFeatures.SSE2, ((regs[3] & 0x04000000) != 0), 1);
@ -74,10 +76,13 @@ void detectCPU()
memset((bool*)&g_cpuFeatures.SSE41, ((regs[2] & 0x00080000) != 0), 1);
memset((bool*)&g_cpuFeatures.SSE42, ((regs[2] & 0x00100000) != 0), 1);
memset((bool*)&g_cpuFeatures.AVX, ((regs[2] & 0x10000000) != 0), 1);
}
if (highestFeature >= 7)
{
getCpuInfoEx(7, 0, regs);
memset((bool*)&g_cpuFeatures.AVX2, ((regs[1] & 0x00000020) != 0), 1);
}
isCPUInit = true;
#endif