Split main project into core,graphics and chocolarm4 subproject (#29)

ChocolArm64/Instruction/AInstEmitCsel.cs

@@ -0,0 +1,59 @@
+using ChocolArm64.Decoder;
+using ChocolArm64.Translation;
+using System.Reflection.Emit;
+
+namespace ChocolArm64.Instruction
+{
+    static partial class AInstEmit
+    {
+        private enum CselOperation
+        {
+            None,
+            Increment,
+            Invert,
+            Negate
+        }
+
+        public static void Csel(AILEmitterCtx Context)  => EmitCsel(Context, CselOperation.None);
+        public static void Csinc(AILEmitterCtx Context) => EmitCsel(Context, CselOperation.Increment);
+        public static void Csinv(AILEmitterCtx Context) => EmitCsel(Context, CselOperation.Invert);
+        public static void Csneg(AILEmitterCtx Context) => EmitCsel(Context, CselOperation.Negate);
+
+        private static void EmitCsel(AILEmitterCtx Context, CselOperation CselOp)
+        {
+            AOpCodeCsel Op = (AOpCodeCsel)Context.CurrOp;
+
+            AILLabel LblTrue = new AILLabel();
+            AILLabel LblEnd  = new AILLabel();
+
+            Context.EmitCondBranch(LblTrue, Op.Cond);
+            Context.EmitLdintzr(Op.Rm);
+
+            if (CselOp == CselOperation.Increment)
+            {
+                Context.EmitLdc_I(1);
+
+                Context.Emit(OpCodes.Add);
+            }
+            else if (CselOp == CselOperation.Invert)
+            {
+                Context.Emit(OpCodes.Not);
+            }
+            else if (CselOp == CselOperation.Negate)
+            {
+                Context.Emit(OpCodes.Neg);
+            }
+
+            Context.EmitStintzr(Op.Rd);
+
+            Context.Emit(OpCodes.Br_S, LblEnd);
+
+            Context.MarkLabel(LblTrue);
+
+            Context.EmitLdintzr(Op.Rn);
+            Context.EmitStintzr(Op.Rd);
+
+            Context.MarkLabel(LblEnd);
+        }
+    }
+}