1 files changed, 23 insertions, 0 deletions
diff --git a/src/ARMeilleure/Decoders/OpCode32SimdRev.cs b/src/ARMeilleure/Decoders/OpCode32SimdRev.cs
new file mode 100644
index 00000000..cb64765f
--- /dev/null
+++ b/src/ARMeilleure/Decoders/OpCode32SimdRev.cs
@@ -0,0 +1,23 @@
+namespace ARMeilleure.Decoders
+{
+    class OpCode32SimdRev : OpCode32SimdCmpZ
+    {
+        public new static OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCode32SimdRev(inst, address, opCode, false);
+        public new static OpCode CreateT32(InstDescriptor inst, ulong address, int opCode) => new OpCode32SimdRev(inst, address, opCode, true);
+
+        public OpCode32SimdRev(InstDescriptor inst, ulong address, int opCode, bool isThumb) : base(inst, address, opCode, isThumb)
+        {
+            if (Opc + Size >= 3)
+            {
+                Instruction = InstDescriptor.Undefined;
+                return;
+            }
+
+            // Currently, this instruction is treated as though it's OPCODE is the true size,
+            // which lets us deal with reversing vectors on a single element basis (eg. math magic an I64 rather than insert lots of I8s).
+            int tempSize = Size;
+            Size = 3 - Opc; // Op 0 is 64 bit, 1 is 32 and so on.
+            Opc = tempSize;
+        }
+    }
+}