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75 lines
1.7 KiB
C++
75 lines
1.7 KiB
C++
#pragma once
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#include <cstdint>
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#ifdef _M_X86_64
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#include <cpuid.h>
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namespace FEX::X86 {
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class Features final {
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public:
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Features() {
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cpuid_data data {};
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data = cpuid(0);
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if (data.eax >= 1) {
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auto data_1 = cpuid(0x1);
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Feat_aes = data_1.ecx & (1U << 25);
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Feat_crc = data_1.ecx & (1U << 20);
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Feat_rand = data_1.ecx & (1U << 30);
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Feat_pclmulqdq = data_1.ecx & (1U << 1);
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}
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if (data.eax >= 7) {
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auto data_7 = cpuid(0x7);
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Feat_bmi1 = data_7.ebx & (1U << 3);
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Feat_bmi2 = data_7.ebx & (1U << 8);
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Feat_clwb = data_7.ebx & (1U << 24);
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Feat_rand &= data_7.ebx & (1U << 18);
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Feat_sha = data_7.ebx & (1U << 29);
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Feat_vaes = data_7.ecx & (1U << 9);
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Feat_pclmulqdq &= data_7.ecx & (1U << 10);
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}
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data = cpuid(0x8000'0000U);
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if (data.eax >= 0x8000'0001U) {
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auto data_8000_0001 = cpuid(0x8000'0001U);
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Feat_3dnow = (data_8000_0001.edx >> 30) == 0b11;
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Feat_sse4a = data_8000_0001.ecx & (1U << 6);
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}
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if (data.eax >= 0x8000'0008U) {
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auto data_8000_0008 = cpuid(0x8000'0008U);
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Feat_clzero = data_8000_0008.ebx & 1;
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}
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}
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// Features.
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bool Feat_3dnow {};
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bool Feat_sse4a {};
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bool Feat_bmi1 {};
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bool Feat_bmi2 {};
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bool Feat_clwb {};
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bool Feat_aes {};
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bool Feat_crc {};
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bool Feat_rand {};
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bool Feat_sha {};
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bool Feat_pclmulqdq {};
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bool Feat_vaes {};
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bool Feat_clzero {};
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private:
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struct cpuid_data {
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uint32_t eax, ebx, ecx, edx;
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};
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cpuid_data cpuid(uint32_t Function, uint32_t Leaf = 0) {
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cpuid_data data;
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__cpuid_count(Function, Leaf, data.eax, data.ebx, data.ecx, data.edx);
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return data;
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}
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};
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} // namespace FEX::X86
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#endif
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