1 files changed, 48 insertions, 0 deletions
diff --git a/ARMeilleure/Decoders/OpCode.cs b/ARMeilleure/Decoders/OpCode.cs
new file mode 100644
index 00000000..0bfc2456
--- /dev/null
+++ b/ARMeilleure/Decoders/OpCode.cs
@@ -0,0 +1,48 @@
+using ARMeilleure.IntermediateRepresentation;
+using System;
+
+namespace ARMeilleure.Decoders
+{
+    class OpCode : IOpCode
+    {
+        public ulong Address   { get; private set; }
+        public int   RawOpCode { get; private set; }
+
+        public int OpCodeSizeInBytes { get; protected set; } = 4;
+
+        public InstDescriptor Instruction { get; protected set; }
+
+        public RegisterSize RegisterSize { get; protected set; }
+
+        public OpCode(InstDescriptor inst, ulong address, int opCode)
+        {
+            Address   = address;
+            RawOpCode = opCode;
+
+            Instruction = inst;
+
+            RegisterSize = RegisterSize.Int64;
+        }
+
+        public int GetPairsCount() => GetBitsCount() / 16;
+        public int GetBytesCount() => GetBitsCount() / 8;
+
+        public int GetBitsCount()
+        {
+            switch (RegisterSize)
+            {
+                case RegisterSize.Int32:   return 32;
+                case RegisterSize.Int64:   return 64;
+                case RegisterSize.Simd64:  return 64;
+                case RegisterSize.Simd128: return 128;
+            }
+
+            throw new InvalidOperationException();
+        }
+
+        public OperandType GetOperandType()
+        {
+            return RegisterSize == RegisterSize.Int32 ? OperandType.I32 : OperandType.I64;
+        }
+    }
+}
+\ No newline at end of file