1 files changed, 123 insertions, 0 deletions
diff --git a/ChocolArm64/Instructions/InstEmitAlu32.cs b/ChocolArm64/Instructions/InstEmitAlu32.cs
new file mode 100644
index 00000000..2ebb8073
--- /dev/null
+++ b/ChocolArm64/Instructions/InstEmitAlu32.cs
@@ -0,0 +1,123 @@
+using ChocolArm64.Decoders;
+using ChocolArm64.State;
+using ChocolArm64.Translation;
+using System.Reflection.Emit;
+
+using static ChocolArm64.Instructions.InstEmit32Helper;
+using static ChocolArm64.Instructions.InstEmitAluHelper;
+
+namespace ChocolArm64.Instructions
+{
+    static partial class InstEmit32
+    {
+        public static void Add(ILEmitterCtx context)
+        {
+            IOpCodeAlu32 op = (IOpCodeAlu32)context.CurrOp;
+
+            EmitAluLoadOpers(context, setCarry: false);
+
+            context.Emit(OpCodes.Add);
+
+            if (op.SetFlags)
+            {
+                context.EmitZnFlagCheck();
+
+                EmitAddsCCheck(context);
+                EmitAddsVCheck(context);
+            }
+
+            EmitAluStore(context);
+        }
+
+        public static void Mov(ILEmitterCtx context)
+        {
+            IOpCodeAlu32 op = (IOpCodeAlu32)context.CurrOp;
+
+            EmitAluLoadOper2(context);
+
+            if (op.SetFlags)
+            {
+                context.EmitZnFlagCheck();
+            }
+
+            EmitAluStore(context);
+        }
+
+        public static void Sub(ILEmitterCtx context)
+        {
+            IOpCodeAlu32 op = (IOpCodeAlu32)context.CurrOp;
+
+            EmitAluLoadOpers(context, setCarry: false);
+
+            context.Emit(OpCodes.Sub);
+
+            if (op.SetFlags)
+            {
+                context.EmitZnFlagCheck();
+
+                EmitSubsCCheck(context);
+                EmitSubsVCheck(context);
+            }
+
+            EmitAluStore(context);
+        }
+
+        private static void EmitAluStore(ILEmitterCtx context)
+        {
+            IOpCodeAlu32 op = (IOpCodeAlu32)context.CurrOp;
+
+            if (op.Rd == RegisterAlias.Aarch32Pc)
+            {
+                if (op.SetFlags)
+                {
+                    //TODO: Load SPSR etc.
+
+                    context.EmitLdflg((int)PState.TBit);
+
+                    ILLabel lblThumb = new ILLabel();
+                    ILLabel lblEnd   = new ILLabel();
+
+                    context.Emit(OpCodes.Brtrue_S, lblThumb);
+
+                    context.EmitLdc_I4(~3);
+
+                    context.Emit(OpCodes.Br_S, lblEnd);
+
+                    context.MarkLabel(lblThumb);
+
+                    context.EmitLdc_I4(~1);
+
+                    context.MarkLabel(lblEnd);
+
+                    context.Emit(OpCodes.And);
+                    context.Emit(OpCodes.Conv_U8);
+                    context.Emit(OpCodes.Ret);
+                }
+                else
+                {
+                    EmitAluWritePc(context);
+                }
+            }
+            else
+            {
+                context.EmitStint(GetRegisterAlias(context.Mode, op.Rd));
+            }
+        }
+
+        private static void EmitAluWritePc(ILEmitterCtx context)
+        {
+            if (IsThumb(context.CurrOp))
+            {
+                context.EmitLdc_I4(~1);
+
+                context.Emit(OpCodes.And);
+                context.Emit(OpCodes.Conv_U8);
+                context.Emit(OpCodes.Ret);
+            }
+            else
+            {
+                EmitBxWritePc(context);
+            }
+        }
+    }
+}
+\ No newline at end of file