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using Ryujinx.Memory;
using System;
using System.Runtime.InteropServices;
using System.Runtime.Intrinsics.X86;
namespace ARMeilleure.CodeGen.X86
{
static class HardwareCapabilities
{
private delegate uint GetXcr0();
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, int ecx7, _) = X86Base.CpuId(0x00000007, 0x00000000);
FeatureInfo7Ebx = (FeatureFlags7Ebx)ebx7;
FeatureInfo7Ecx = (FeatureFlags7Ecx)ecx7;
}
Xcr0InfoEax = (Xcr0FlagsEax)GetXcr0Eax();
}
private static uint GetXcr0Eax()
{
if (!FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Xsave))
{
// XSAVE feature required for xgetbv
return 0;
}
ReadOnlySpan<byte> asmGetXcr0 = new byte[]
{
0x31, 0xc9, // xor ecx, ecx
0xf, 0x01, 0xd0, // xgetbv
0xc3, // ret
};
using MemoryBlock memGetXcr0 = new((ulong)asmGetXcr0.Length);
memGetXcr0.Write(0, asmGetXcr0);
memGetXcr0.Reprotect(0, (ulong)asmGetXcr0.Length, MemoryPermission.ReadAndExecute);
var fGetXcr0 = Marshal.GetDelegateForFunctionPointer<GetXcr0>(memGetXcr0.Pointer);
return fGetXcr0();
}
[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,
Xsave = 1 << 26,
Osxsave = 1 << 27,
Avx = 1 << 28,
F16c = 1 << 29,
}
[Flags]
public enum FeatureFlags7Ebx
{
Avx2 = 1 << 5,
Avx512f = 1 << 16,
Avx512dq = 1 << 17,
Sha = 1 << 29,
Avx512bw = 1 << 30,
Avx512vl = 1 << 31,
}
[Flags]
public enum FeatureFlags7Ecx
{
Gfni = 1 << 8,
}
[Flags]
public enum Xcr0FlagsEax
{
Sse = 1 << 1,
YmmHi128 = 1 << 2,
Opmask = 1 << 5,
ZmmHi256 = 1 << 6,
Hi16Zmm = 1 << 7,
}
public static FeatureFlags1Edx FeatureInfo1Edx { get; }
public static FeatureFlags1Ecx FeatureInfo1Ecx { get; }
public static FeatureFlags7Ebx FeatureInfo7Ebx { get; } = 0;
public static FeatureFlags7Ecx FeatureInfo7Ecx { get; } = 0;
public static Xcr0FlagsEax Xcr0InfoEax { 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 | FeatureFlags1Ecx.Xsave | FeatureFlags1Ecx.Osxsave) && Xcr0InfoEax.HasFlag(Xcr0FlagsEax.Sse | Xcr0FlagsEax.YmmHi128);
public static bool SupportsAvx2 => FeatureInfo7Ebx.HasFlag(FeatureFlags7Ebx.Avx2) && SupportsAvx;
public static bool SupportsAvx512F => FeatureInfo7Ebx.HasFlag(FeatureFlags7Ebx.Avx512f) && FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Xsave | FeatureFlags1Ecx.Osxsave)
&& Xcr0InfoEax.HasFlag(Xcr0FlagsEax.Sse | Xcr0FlagsEax.YmmHi128 | Xcr0FlagsEax.Opmask | Xcr0FlagsEax.ZmmHi256 | Xcr0FlagsEax.Hi16Zmm);
public static bool SupportsAvx512Vl => FeatureInfo7Ebx.HasFlag(FeatureFlags7Ebx.Avx512vl) && SupportsAvx512F;
public static bool SupportsAvx512Bw => FeatureInfo7Ebx.HasFlag(FeatureFlags7Ebx.Avx512bw) && SupportsAvx512F;
public static bool SupportsAvx512Dq => FeatureInfo7Ebx.HasFlag(FeatureFlags7Ebx.Avx512dq) && SupportsAvx512F;
public static bool SupportsF16c => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.F16c);
public static bool SupportsSha => FeatureInfo7Ebx.HasFlag(FeatureFlags7Ebx.Sha);
public static bool SupportsGfni => FeatureInfo7Ecx.HasFlag(FeatureFlags7Ecx.Gfni);
public static bool ForceLegacySse { get; set; }
public static bool SupportsVexEncoding => SupportsAvx && !ForceLegacySse;
public static bool SupportsEvexEncoding => SupportsAvx512F && !ForceLegacySse;
}
}
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