diff --git a/include/opcode/ChangeLog b/include/opcode/ChangeLog
index fc2b40e27..a46900ac1 100644
--- a/include/opcode/ChangeLog
+++ b/include/opcode/ChangeLog
@@ -1,3 +1,8 @@
+2013-03-11  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	* arm.h (CRC_EXT_ARMV8): New constant.
+	(ARCH_CRC_ARMV8): New macro.
+
 2013-02-28  Yufeng Zhang  <yufeng.zhang@arm.com>
 
 	* aarch64.h (AARCH64_FEATURE_CRC): New macro.
diff --git a/include/opcode/arm.h b/include/opcode/arm.h
index 1ac38a06f..851fd3c85 100644
--- a/include/opcode/arm.h
+++ b/include/opcode/arm.h
@@ -81,6 +81,7 @@
 #define FPU_VFP_EXT_ARMV8 0x00020000	/* FP for ARMv8.  */
 #define FPU_NEON_EXT_ARMV8 0x00010000	/* Neon for ARMv8.  */
 #define FPU_CRYPTO_EXT_ARMV8 0x00008000	/* Crypto for ARMv8.  */
+#define CRC_EXT_ARMV8	 0x00004000	/* CRC32 for ARMv8.  */
 
 /* Architectures are the sum of the base and extensions.  The ARM ARM (rev E)
    defines the following: ARMv3, ARMv3M, ARMv4xM, ARMv4, ARMv4TxM, ARMv4T,
@@ -189,6 +190,7 @@
 #define FPU_ARCH_NEON_VFP_ARMV8 ARM_FEATURE(0, FPU_NEON_ARMV8 | FPU_VFP_ARMV8)
 #define FPU_ARCH_CRYPTO_NEON_VFP_ARMV8 \
   ARM_FEATURE(0, FPU_CRYPTO_ARMV8 | FPU_NEON_ARMV8 | FPU_VFP_ARMV8)
+#define ARCH_CRC_ARMV8 ARM_FEATURE(0, CRC_EXT_ARMV8)
 
 #define FPU_ARCH_ENDIAN_PURE ARM_FEATURE (0, FPU_ENDIAN_PURE)