1 files changed, 34 insertions, 0 deletions
diff --git a/src/ARMeilleure/Decoders/OpCode32.cs b/src/ARMeilleure/Decoders/OpCode32.cs
new file mode 100644
index 00000000..c2f14145
--- /dev/null
+++ b/src/ARMeilleure/Decoders/OpCode32.cs
@@ -0,0 +1,34 @@
+namespace ARMeilleure.Decoders
+{
+    class OpCode32 : OpCode
+    {
+        public Condition Cond { get; protected set; }
+
+        public new static OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCode32(inst, address, opCode);
+
+        public OpCode32(InstDescriptor inst, ulong address, int opCode) : base(inst, address, opCode)
+        {
+            RegisterSize = RegisterSize.Int32;
+
+            Cond = (Condition)((uint)opCode >> 28);
+        }
+
+        public bool IsThumb { get; protected init; } = false;
+
+        public uint GetPc()
+        {
+            // Due to backwards compatibility and legacy behavior of ARMv4 CPUs pipeline,
+            // the PC actually points 2 instructions ahead.
+            if (IsThumb)
+            {
+                // PC is ahead by 4 in thumb mode whether or not the current instruction
+                // is 16 or 32 bit.
+                return (uint)Address + 4u;
+            }
+            else
+            {
+                return (uint)Address + 8u;
+            }
+        }
+    }
+}
+\ No newline at end of file