1 files changed, 61 insertions, 0 deletions
diff --git a/ARMeilleure/Instructions/InstEmitCcmp.cs b/ARMeilleure/Instructions/InstEmitCcmp.cs
new file mode 100644
index 00000000..b1b0a2a1
--- /dev/null
+++ b/ARMeilleure/Instructions/InstEmitCcmp.cs
@@ -0,0 +1,61 @@
+using ARMeilleure.Decoders;
+using ARMeilleure.IntermediateRepresentation;
+using ARMeilleure.State;
+using ARMeilleure.Translation;
+
+using static ARMeilleure.Instructions.InstEmitAluHelper;
+using static ARMeilleure.Instructions.InstEmitFlowHelper;
+using static ARMeilleure.Instructions.InstEmitHelper;
+using static ARMeilleure.IntermediateRepresentation.OperandHelper;
+
+namespace ARMeilleure.Instructions
+{
+    static partial class InstEmit
+    {
+        public static void Ccmn(ArmEmitterContext context) => EmitCcmp(context, isNegated: true);
+        public static void Ccmp(ArmEmitterContext context) => EmitCcmp(context, isNegated: false);
+
+        private static void EmitCcmp(ArmEmitterContext context, bool isNegated)
+        {
+            OpCodeCcmp op = (OpCodeCcmp)context.CurrOp;
+
+            Operand lblTrue = Label();
+            Operand lblEnd  = Label();
+
+            EmitCondBranch(context, lblTrue, op.Cond);
+
+            SetFlag(context, PState.VFlag, Const((op.Nzcv >> 0) & 1));
+            SetFlag(context, PState.CFlag, Const((op.Nzcv >> 1) & 1));
+            SetFlag(context, PState.ZFlag, Const((op.Nzcv >> 2) & 1));
+            SetFlag(context, PState.NFlag, Const((op.Nzcv >> 3) & 1));
+
+            context.Branch(lblEnd);
+
+            context.MarkLabel(lblTrue);
+
+            Operand n = GetAluN(context);
+            Operand m = GetAluM(context);
+
+            if (isNegated)
+            {
+                Operand d = context.Add(n, m);
+
+                EmitNZFlagsCheck(context, d);
+
+                EmitAddsCCheck(context, n, d);
+                EmitAddsVCheck(context, n, m, d);
+            }
+            else
+            {
+                Operand d = context.Subtract(n, m);
+
+                EmitNZFlagsCheck(context, d);
+
+                EmitSubsCCheck(context, n, m);
+                EmitSubsVCheck(context, n, m, d);
+            }
+
+            context.MarkLabel(lblEnd);
+        }
+    }
+}
+\ No newline at end of file