diff options
Diffstat (limited to 'src/ARMeilleure/CodeGen/X86/HardwareCapabilities.cs')
| -rw-r--r-- | src/ARMeilleure/CodeGen/X86/HardwareCapabilities.cs | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/src/ARMeilleure/CodeGen/X86/HardwareCapabilities.cs b/src/ARMeilleure/CodeGen/X86/HardwareCapabilities.cs new file mode 100644 index 00000000..07cdcd09 --- /dev/null +++ b/src/ARMeilleure/CodeGen/X86/HardwareCapabilities.cs @@ -0,0 +1,144 @@ +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 MemoryBlock((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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