diff --git a/ChangeLog b/ChangeLog
index 6c5318e662..0350652bd0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,9 @@
-2015-11-10  Wilco Dijkstra  wdijkstr@arm.com
+2015-11-10  Wilco Dijkstra  <wdijkstr@arm.com>
+
+	* sysdeps/aarch64/bits/string.h: New file.
+	(_STRING_ARCH_unaligned): Define.
+
+2015-11-10  Wilco Dijkstra  <wdijkstr@arm.com>
 
 	* sysdeps/unix/sysv/linux/aarch64/localplt.data: Remove __signbit*.
 	* sysdeps/unix/sysv/linux/arm/localplt.data: Likewise.
diff --git a/sysdeps/aarch64/bits/string.h b/sysdeps/aarch64/bits/string.h
new file mode 100644
index 0000000000..5221e69e27
--- /dev/null
+++ b/sysdeps/aarch64/bits/string.h
@@ -0,0 +1,24 @@
+/* Optimized, inlined string functions.  AArch64 version.
+   Copyright (C) 2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _STRING_H
+# error "Never use <bits/string.h> directly; include <string.h> instead."
+#endif
+
+/* AArch64 implementations support efficient unaligned access.  */
+#define _STRING_ARCH_unaligned 1