diff --git a/common/aarch64/debug.S b/common/aarch64/debug.S
index da740ef..ac47cbe 100644
--- a/common/aarch64/debug.S
+++ b/common/aarch64/debug.S
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -10,6 +10,7 @@
 
 	.globl	asm_print_str
 	.globl	asm_print_hex
+	.globl	asm_print_hex_bits
 	.globl	asm_assert
 	.globl	do_panic
 
@@ -107,8 +108,11 @@
  * Clobber: x30, x0 - x3, x5
  */
 func asm_print_hex
-	mov	x3, x30
 	mov	x5, #64  /* No of bits to convert to ascii */
+
+	/* Convert to ascii number of bits in x5 */
+asm_print_hex_bits:
+	mov	x3, x30
 1:
 	sub	x5, x5, #4
 	lsrv	x0, x4, x5