Adjust naming conventions for Ryujinx and ChocolArm64 projects (#484)

* Change naming convention for Ryujinx project

* Change naming convention for ChocolArm64 project

* Fix NaN

* Remove unneeded this. from Ryujinx project

* Adjust naming from new PRs

* Name changes based on feedback

* How did this get removed?

* Rebasing fix

* Change FP enum case

* Remove prefix from ChocolArm64 classes - Part 1

* Remove prefix from ChocolArm64 classes - Part 2

* Fix alignment from last commit's renaming

* Rename namespaces

* Rename stragglers

* Fix alignment

* Rename OpCode class

* Missed a few

* Adjust alignment

1 files changed, 80 insertions, 0 deletions

diff --git a/ChocolArm64/Instructions/InstEmitMul.cs b/ChocolArm64/Instructions/InstEmitMul.cs
new file mode 100644
index 00000000..b7418e69
--- /dev/null
+++ b/ChocolArm64/Instructions/InstEmitMul.cs
@@ -0,0 +1,80 @@
+using ChocolArm64.Decoders;
+using ChocolArm64.Translation;
+using System.Reflection.Emit;
+
+namespace ChocolArm64.Instructions
+{
+    static partial class InstEmit
+    {
+        public static void Madd(ILEmitterCtx context) => EmitMul(context, OpCodes.Add);
+        public static void Msub(ILEmitterCtx context) => EmitMul(context, OpCodes.Sub);
+
+        private static void EmitMul(ILEmitterCtx context, OpCode ilOp)
+        {
+            OpCodeMul64 op = (OpCodeMul64)context.CurrOp;
+
+            context.EmitLdintzr(op.Ra);
+            context.EmitLdintzr(op.Rn);
+            context.EmitLdintzr(op.Rm);
+
+            context.Emit(OpCodes.Mul);
+            context.Emit(ilOp);
+
+            context.EmitStintzr(op.Rd);
+        }
+
+        public static void Smaddl(ILEmitterCtx context) => EmitMull(context, OpCodes.Add, true);
+        public static void Smsubl(ILEmitterCtx context) => EmitMull(context, OpCodes.Sub, true);
+        public static void Umaddl(ILEmitterCtx context) => EmitMull(context, OpCodes.Add, false);
+        public static void Umsubl(ILEmitterCtx context) => EmitMull(context, OpCodes.Sub, false);
+
+        private static void EmitMull(ILEmitterCtx context, OpCode addSubOp, bool signed)
+        {
+            OpCodeMul64 op = (OpCodeMul64)context.CurrOp;
+
+            OpCode castOp = signed
+                ? OpCodes.Conv_I8
+                : OpCodes.Conv_U8;
+
+            context.EmitLdintzr(op.Ra);
+            context.EmitLdintzr(op.Rn);
+
+            context.Emit(OpCodes.Conv_I4);
+            context.Emit(castOp);
+
+            context.EmitLdintzr(op.Rm);
+
+            context.Emit(OpCodes.Conv_I4);
+            context.Emit(castOp);
+            context.Emit(OpCodes.Mul);
+
+            context.Emit(addSubOp);
+
+            context.EmitStintzr(op.Rd);
+        }
+
+        public static void Smulh(ILEmitterCtx context)
+        {
+            OpCodeMul64 op = (OpCodeMul64)context.CurrOp;
+
+            context.EmitLdintzr(op.Rn);
+            context.EmitLdintzr(op.Rm);
+
+            SoftFallback.EmitCall(context, nameof(SoftFallback.SMulHi128));
+
+            context.EmitStintzr(op.Rd);
+        }
+
+        public static void Umulh(ILEmitterCtx context)
+        {
+            OpCodeMul64 op = (OpCodeMul64)context.CurrOp;
+
+            context.EmitLdintzr(op.Rn);
+            context.EmitLdintzr(op.Rm);
+
+            SoftFallback.EmitCall(context, nameof(SoftFallback.UMulHi128));
+
+            context.EmitStintzr(op.Rd);
+        }
+    }
+}
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