diff --git a/lib/libc/arch/arm/string/Makefile.inc b/lib/libc/arch/arm/string/Makefile.inc
index 844b8d55295e..311b2a8b515e 100644
--- a/lib/libc/arch/arm/string/Makefile.inc
+++ b/lib/libc/arch/arm/string/Makefile.inc
@@ -1,8 +1,8 @@
-# $NetBSD: Makefile.inc,v 1.4 2002/11/23 03:10:27 chris Exp $
+# $NetBSD: Makefile.inc,v 1.5 2002/11/23 14:26:04 chris Exp $
 
 SRCS+=  memcpy.S _memcpy.S bcopy.S memmove.S memset.S bzero.S ffs.S strcmp.S
-SRCS+=	strncmp.S
-SRCS+=	bcmp.c index.c memchr.c memcmp.c \
+SRCS+=	strncmp.S memcmp.S
+SRCS+=	bcmp.c index.c memchr.c \
 	rindex.c strcat.c strcpy.c strcspn.c strlen.c \
 	strncat.c strncpy.c strpbrk.c strsep.c \
 	strspn.c strstr.c swab.c
diff --git a/lib/libc/arch/arm/string/memcmp.S b/lib/libc/arch/arm/string/memcmp.S
new file mode 100644
index 000000000000..ec2946dfe5ae
--- /dev/null
+++ b/lib/libc/arch/arm/string/memcmp.S
@@ -0,0 +1,58 @@
+/*      $NetBSD: memcmp.S,v 1.1 2002/11/23 14:26:04 chris Exp $ */
+
+/*
+ * Copyright (c) 2002 ARM Ltd
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the company may not be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <machine/asm.h>
+
+RCSID("$NetBSD: memcmp.S,v 1.1 2002/11/23 14:26:04 chris Exp $")
+
+ENTRY(memcmp)
+/* if ((len - 1) < 0) return 0 */
+	subs	r2, r2, #1
+	movmi	r0, #0
+#ifdef __APCS_26__
+	movmis	pc, lr
+#else
+	movmi	pc, lr
+#endif
+
+/* ip == last src address to compare */
+	add	ip, r0, r2
+1:
+	ldrb	r2, [r0], #1
+	ldrb	r3, [r1], #1
+	cmp	ip, r0
+	cmpcs	r2, r3
+	beq	1b
+	sub	r0, r2, r3
+#ifdef __APCS_26__
+        movs	pc, lr
+#else
+	mov	pc, lr
+#endif