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- added detection of more x86 extended CPU instructions

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Replaced report of 3DNow support with recent fancy CPU instructions
This commit is contained in:
alexey.lysiuk 2021-02-06 16:56:59 +02:00
commit 74685a1360
2 changed files with 125 additions and 19 deletions
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35
src/common/utility/x86.cpp
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@ -58,18 +58,11 @@ FString DumpCPUInfo(const CPUInfo *cpu)
#ifdef __GNUC__
#if defined(__i386__) && defined(__PIC__)
// %ebx may by the PIC register. */
#define __cpuid(output, func) \
__asm__ __volatile__("xchgl\t%%ebx, %1\n\t" \
"cpuid\n\t" \
"xchgl\t%%ebx, %1\n\t" \
: "=a" ((output)[0]), "=r" ((output)[1]), "=c" ((output)[2]), "=d" ((output)[3]) \
: "a" (func));
#else
#define __cpuid(output, func) __asm__ __volatile__("cpuid" : "=a" ((output)[0]),\
"=b" ((output)[1]), "=c" ((output)[2]), "=d" ((output)[3]) : "a" (func));
#endif
#define __cpuidex(output, func, subfunc) \
__asm__ __volatile__("cpuid" \
: "=a" ((output)[0]), "=b" ((output)[1]), "=c" ((output)[2]), "=d" ((output)[3]) \
: "a" (func), "c" (subfunc));
#define __cpuid(output, func) __cpuidex(output, func, 0)
#endif
void CheckCPUID(CPUInfo *cpu)
@ -83,6 +76,7 @@ void CheckCPUID(CPUInfo *cpu)
// Get vendor ID
__cpuid(foo, 0);
const int maxid = foo[0];
cpu->dwVendorID[0] = foo[1];
cpu->dwVendorID[1] = foo[3];
cpu->dwVendorID[2] = foo[2];
@ -154,6 +148,17 @@ void CheckCPUID(CPUInfo *cpu)
cpu->FeatureFlags[3] = foo[3]; // AMD feature flags
}
}
if (maxid >= 7)
{
__cpuidex(foo, 7, 0);
cpu->FeatureFlags[4] = foo[1];
cpu->FeatureFlags[5] = foo[2];
cpu->FeatureFlags[6] = foo[3];
__cpuidex(foo, 7, 1);
cpu->FeatureFlags[7] = foo[0];
}
}
FString DumpCPUInfo(const CPUInfo *cpu)
@ -208,10 +213,12 @@ FString DumpCPUInfo(const CPUInfo *cpu)
if (cpu->bSSE41) out += (" SSE4.1");
if (cpu->bSSE42) out += (" SSE4.2");
if (cpu->bAVX) out += (" AVX");
if (cpu->bAVX2) out += (" AVX2");
if (cpu->bAVX512_F) out += (" AVX512");
if (cpu->bF16C) out += (" F16C");
if (cpu->bFMA3) out += (" FMA3");
if (cpu->b3DNow) out += (" 3DNow!");
if (cpu->b3DNowPlus) out += (" 3DNow!+");
if (cpu->bBMI1) out += (" BMI1");
if (cpu->bBMI2) out += (" BMI2");
if (cpu->HyperThreading) out += (" HyperThreading");
out += ("\n");
}