diff --git a/MCFixedLenDisassembler.h b/MCFixedLenDisassembler.h
new file mode 100644
index 0000000..8078a76
--- /dev/null
+++ b/MCFixedLenDisassembler.h
@@ -0,0 +1,30 @@
+//===-- llvm/MC/MCFixedLenDisassembler.h - Decoder driver -------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Fixed length disassembler decoder state machine driver.
+//===----------------------------------------------------------------------===//
+
+/* Capstone Disassembler Engine */
+/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013> */
+
+#ifndef CS_LLVM_MC_MCFIXEDLENDISASSEMBLER_H
+#define CS_LLVM_MC_MCFIXEDLENDISASSEMBLER_H
+
+// Disassembler state machine opcodes.
+enum DecoderOps {
+	MCD_OPC_ExtractField = 1, // OPC_ExtractField(uint8_t Start, uint8_t Len)
+	MCD_OPC_FilterValue,      // OPC_FilterValue(uleb128 Val, uint16_t NumToSkip)
+	MCD_OPC_CheckField,       // OPC_CheckField(uint8_t Start, uint8_t Len,
+							  //                uleb128 Val, uint16_t NumToSkip)
+	MCD_OPC_CheckPredicate,   // OPC_CheckPredicate(uleb128 PIdx, uint16_t NumToSkip)
+	MCD_OPC_Decode,           // OPC_Decode(uleb128 Opcode, uleb128 DIdx)
+	MCD_OPC_SoftFail,         // OPC_SoftFail(uleb128 PMask, uleb128 NMask)
+	MCD_OPC_Fail              // OPC_Fail()
+};
+
+#endif