ChocolArm64/Instructions/InstEmitHash.cs

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using ChocolArm64.Decoders;
using ChocolArm64.State;
using ChocolArm64.Translation;
using System;
using System.Reflection.Emit;
using System.Runtime.Intrinsics.X86;
namespace ChocolArm64.Instructions
{
static partial class InstEmit
{
public static void Crc32b(ILEmitterCtx context)
{
EmitCrc32(context, nameof(SoftFallback.Crc32B));
}
public static void Crc32h(ILEmitterCtx context)
{
EmitCrc32(context, nameof(SoftFallback.Crc32H));
}
public static void Crc32w(ILEmitterCtx context)
{
EmitCrc32(context, nameof(SoftFallback.Crc32W));
}
public static void Crc32x(ILEmitterCtx context)
{
EmitCrc32(context, nameof(SoftFallback.Crc32X));
}
public static void Crc32cb(ILEmitterCtx context)
{
if (Optimizations.UseSse42)
{
EmitSse42Crc32(context, typeof(uint), typeof(byte));
}
else
{
EmitCrc32(context, nameof(SoftFallback.Crc32Cb));
}
}
public static void Crc32ch(ILEmitterCtx context)
{
if (Optimizations.UseSse42)
{
EmitSse42Crc32(context, typeof(uint), typeof(ushort));
}
else
{
EmitCrc32(context, nameof(SoftFallback.Crc32Ch));
}
}
public static void Crc32cw(ILEmitterCtx context)
{
if (Optimizations.UseSse42)
{
EmitSse42Crc32(context, typeof(uint), typeof(uint));
}
else
{
EmitCrc32(context, nameof(SoftFallback.Crc32Cw));
}
}
public static void Crc32cx(ILEmitterCtx context)
{
if (Optimizations.UseSse42)
{
EmitSse42Crc32(context, typeof(ulong), typeof(ulong));
}
else
{
EmitCrc32(context, nameof(SoftFallback.Crc32Cx));
}
}
private static void EmitSse42Crc32(ILEmitterCtx context, Type tCrc, Type tData)
{
OpCodeAluRs64 op = (OpCodeAluRs64)context.CurrOp;
context.EmitLdintzr(op.Rn);
context.EmitLdintzr(op.Rm);
context.EmitCall(typeof(Sse42).GetMethod(nameof(Sse42.Crc32), new Type[] { tCrc, tData }));
context.EmitStintzr(op.Rd);
}
private static void EmitCrc32(ILEmitterCtx context, string name)
{
OpCodeAluRs64 op = (OpCodeAluRs64)context.CurrOp;
context.EmitLdintzr(op.Rn);
if (op.RegisterSize != RegisterSize.Int32)
{
context.Emit(OpCodes.Conv_U4);
}
context.EmitLdintzr(op.Rm);
SoftFallback.EmitCall(context, name);
if (op.RegisterSize != RegisterSize.Int32)
{
context.Emit(OpCodes.Conv_U8);
}
context.EmitStintzr(op.Rd);
}
}
}