1 files changed, 115 insertions, 0 deletions
diff --git a/ChocolArm64/Instructions/InstEmitHash.cs b/ChocolArm64/Instructions/InstEmitHash.cs
new file mode 100644
index 00000000..7e21a886
--- /dev/null
+++ b/ChocolArm64/Instructions/InstEmitHash.cs
@@ -0,0 +1,115 @@
+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);
+        }
+    }
+}