Muldersoft/MUtilities
Muldersoft/MUtilities
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CPUFeatures: Added AVX detection.

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This commit is contained in:
LoRd_MuldeR 2016-02-20 16:26:56 +01:00
parent 46c2831304
commit 3ec3580ba4
2 changed files with 25 additions and 6 deletions
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1
include/MUtils/CPUFeatures.h
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@ -39,6 +39,7 @@ namespace MUtils
static const quint32 FLAG_SSSE3 = 0x10;
static const quint32 FLAG_SSE4 = 0x20;
static const quint32 FLAG_SSE42 = 0x40;
static const quint32 FLAG_AVX = 0x80;
//CPU features
typedef struct _cpu_info_t

30
src/CPUFeatures_Win32.cpp
View File

@ -61,6 +61,13 @@ MUtils::CPUFetaures::cpu_info_t MUtils::CPUFetaures::detect(void)
if(CPUInfo[2] & 0x00000200) features.features |= FLAG_SSSE3;
if(CPUInfo[2] & 0x00080000) features.features |= FLAG_SSE4;
if(CPUInfo[2] & 0x00100000) features.features |= FLAG_SSE42;
if ((CPUInfo[2] & 0x18000000) == 0x18000000)
{
if (IsProcessorFeaturePresent(PF_XSAVE_ENABLED)) /*AVX requires OS support!*/
{
features.features |= FLAG_AVX;
}
}
features.stepping = CPUInfo[0] & 0xf;
features.model = ((CPUInfo[0] >> 4) & 0xf) + (((CPUInfo[0] >> 16) & 0xf) << 4);
features.family = ((CPUInfo[0] >> 8) & 0xf) + ((CPUInfo[0] >> 20) & 0xff);
@ -98,13 +105,24 @@ MUtils::CPUFetaures::cpu_info_t MUtils::CPUFetaures::detect(void)
BOOL x64flag = FALSE;
if(isWow64ProcessPtr(GetCurrentProcess(), &x64flag))
{
features.x64 = (x64flag == TRUE);
if(x64flag) features.x64 = true;
}
}
#else
features.x64 = true;
#endif
if (features.x64)
{
features.features |= (FLAG_MMX | FLAG_SSE | FLAG_SSE2); /*x86_64 implies SSE2*/
}
if (!(features.features & FLAG_MMX))
{
qWarning("Warning: CPU does not seem to support MMX. Take care!\n");
features.features = 0;
}
DWORD_PTR procAffinity, sysAffinity;
if(GetProcessAffinityMask(GetCurrentProcess(), &procAffinity, &sysAffinity))
{
@ -119,12 +137,12 @@ MUtils::CPUFetaures::cpu_info_t MUtils::CPUFetaures::detect(void)
features.count = qBound(1UL, systemInfo.dwNumberOfProcessors, 64UL);
}
bool flag = false;
if(args.contains("force-cpu-no-64bit")) { flag = true; features.x64 = false; }
if(args.contains("force-cpu-no-sse" )) { flag = true; features.features &= (~(FLAG_SSE | FLAG_SSE2 | FLAG_SSE3 | FLAG_SSSE3 | FLAG_SSE4 | FLAG_SSE42)); }
if(args.contains("force-cpu-no-intel")) { flag = true; features.intel = false; }
bool userFlag = false;
if(args.contains("force-cpu-no-64bit")) { userFlag = true; features.x64 = false; }
if(args.contains("force-cpu-no-sse" )) { userFlag = true; features.features &= (~(FLAG_SSE | FLAG_SSE2 | FLAG_SSE3 | FLAG_SSSE3 | FLAG_SSE4 | FLAG_SSE42)); }
if(args.contains("force-cpu-no-intel")) { userFlag = true; features.intel = false; }
if(flag)
if(userFlag)
{
qWarning("CPU flags overwritten by user-defined parameters. Take care!\n");
}