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using System;
using System.Runtime.Intrinsics.X86;
namespace ARMeilleure.CodeGen.X86
{
static class HardwareCapabilities
{
static HardwareCapabilities()
{
if (!X86Base.IsSupported)
{
return;
}
(int maxNum, _, _, _) = X86Base.CpuId(0x00000000, 0x00000000);
(_, _, int ecx1, int edx1) = X86Base.CpuId(0x00000001, 0x00000000);
FeatureInfo1Edx = (FeatureFlags1Edx)edx1;
FeatureInfo1Ecx = (FeatureFlags1Ecx)ecx1;
if (maxNum >= 7)
{
(_, int ebx7, _, _) = X86Base.CpuId(0x00000007, 0x00000000);
FeatureInfo7Ebx = (FeatureFlags7Ebx)ebx7;
}
}
[Flags]
public enum FeatureFlags1Edx
{
Sse = 1 << 25,
Sse2 = 1 << 26
}
[Flags]
public enum FeatureFlags1Ecx
{
Sse3 = 1 << 0,
Pclmulqdq = 1 << 1,
Ssse3 = 1 << 9,
Fma = 1 << 12,
Sse41 = 1 << 19,
Sse42 = 1 << 20,
Popcnt = 1 << 23,
Aes = 1 << 25,
Avx = 1 << 28,
F16c = 1 << 29
}
[Flags]
public enum FeatureFlags7Ebx
{
Avx2 = 1 << 5,
Sha = 1 << 29
}
public static FeatureFlags1Edx FeatureInfo1Edx { get; }
public static FeatureFlags1Ecx FeatureInfo1Ecx { get; }
public static FeatureFlags7Ebx FeatureInfo7Ebx { get; } = 0;
public static bool SupportsSse => FeatureInfo1Edx.HasFlag(FeatureFlags1Edx.Sse);
public static bool SupportsSse2 => FeatureInfo1Edx.HasFlag(FeatureFlags1Edx.Sse2);
public static bool SupportsSse3 => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Sse3);
public static bool SupportsPclmulqdq => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Pclmulqdq);
public static bool SupportsSsse3 => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Ssse3);
public static bool SupportsFma => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Fma);
public static bool SupportsSse41 => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Sse41);
public static bool SupportsSse42 => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Sse42);
public static bool SupportsPopcnt => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Popcnt);
public static bool SupportsAesni => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Aes);
public static bool SupportsAvx => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Avx);
public static bool SupportsAvx2 => FeatureInfo7Ebx.HasFlag(FeatureFlags7Ebx.Avx2) && SupportsAvx;
public static bool SupportsF16c => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.F16c);
public static bool SupportsSha => FeatureInfo7Ebx.HasFlag(FeatureFlags7Ebx.Sha);
public static bool ForceLegacySse { get; set; }
public static bool SupportsVexEncoding => SupportsAvx && !ForceLegacySse;
}
}
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