1 files changed, 33 insertions, 0 deletions
diff --git a/src/ARMeilleure/Decoders/OpCode32Simd.cs b/src/ARMeilleure/Decoders/OpCode32Simd.cs
new file mode 100644
index 00000000..636aa0a8
--- /dev/null
+++ b/src/ARMeilleure/Decoders/OpCode32Simd.cs
@@ -0,0 +1,33 @@
+namespace ARMeilleure.Decoders
+{
+    class OpCode32Simd : OpCode32SimdBase
+    {
+        public int Opc { get; protected set; }
+        public bool Q { get; protected set; }
+        public bool F { get; protected set; }
+        public bool U { get; }
+
+        public new static OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCode32Simd(inst, address, opCode, false);
+        public static OpCode CreateT32(InstDescriptor inst, ulong address, int opCode) => new OpCode32Simd(inst, address, opCode, true);
+
+        public OpCode32Simd(InstDescriptor inst, ulong address, int opCode, bool isThumb) : base(inst, address, opCode, isThumb)
+        {
+            Size = (opCode >> 20) & 0x3;
+            Q = ((opCode >> 6) & 0x1) != 0;
+            F = ((opCode >> 10) & 0x1) != 0;
+            U = ((opCode >> (isThumb ? 28 : 24)) & 0x1) != 0;
+            Opc = (opCode >> 7) & 0x3;
+
+            RegisterSize = Q ? RegisterSize.Simd128 : RegisterSize.Simd64;
+
+            Vd = ((opCode >> 18) & 0x10) | ((opCode >> 12) & 0xf);
+            Vm = ((opCode >> 1) & 0x10) | ((opCode >> 0) & 0xf);
+
+            // Subclasses have their own handling of Vx to account for before checking.
+            if (GetType() == typeof(OpCode32Simd) && DecoderHelper.VectorArgumentsInvalid(Q, Vd, Vm))
+            {
+                Instruction = InstDescriptor.Undefined;
+            }
+        }
+    }
+}