diff --git a/sysdeps/x86_64/strlen.S b/sysdeps/x86_64/strlen.S
index 5896e6b9..b5ab117 100644
--- a/sysdeps/x86_64/strlen.S
+++ b/sysdeps/x86_64/strlen.S
@@ -1,4 +1,4 @@
-/* SSE2 version of strlen.
+/* SSE2 version of strlen/wcslen.
    Copyright (C) 2012-2017 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
@@ -18,6 +18,16 @@
 
 #include <sysdep.h>
 
+#ifdef AS_WCSLEN
+# define PMINU		pminud
+# define PCMPEQ		pcmpeqd
+# define SHIFT_RETURN	shrq $2, %rax
+#else
+# define PMINU		pminub
+# define PCMPEQ		pcmpeqb
+# define SHIFT_RETURN
+#endif
+
 /* Long lived register in strlen(s), strnlen(s, n) are:
 
 	%xmm3 - zero
@@ -32,10 +42,10 @@ ENTRY(strlen)
 
 /* Test 64 bytes from %rax for zero. Save result as bitmask in %rdx.  */
 #define FIND_ZERO	\
-	pcmpeqb	(%rax), %xmm0;	\
-	pcmpeqb	16(%rax), %xmm1;	\
-	pcmpeqb	32(%rax), %xmm2;	\
-	pcmpeqb	48(%rax), %xmm3;	\
+	PCMPEQ	(%rax), %xmm0;	\
+	PCMPEQ	16(%rax), %xmm1;	\
+	PCMPEQ	32(%rax), %xmm2;	\
+	PCMPEQ	48(%rax), %xmm3;	\
 	pmovmskb	%xmm0, %esi;	\
 	pmovmskb	%xmm1, %edx;	\
 	pmovmskb	%xmm2, %r8d;	\
@@ -54,6 +64,9 @@ ENTRY(strlen)
 	xor	%rax, %rax
 	ret
 L(n_nonzero):
+# ifdef AS_WCSLEN
+	shlq	$2, %rsi
+# endif
 
 /* Initialize long lived registers.  */
 
@@ -96,6 +109,7 @@ L(n_nonzero):
 	test	%rdx, %rdx;	\
 	je	L(lab);	\
 	bsfq	%rdx, %rax;	\
+	SHIFT_RETURN;		\
 	ret
 
 #ifdef AS_STRNLEN
@@ -104,19 +118,20 @@ L(n_nonzero):
 #else
 	/* Test first 16 bytes unaligned.  */
 	movdqu	(%rax), %xmm4
-	pcmpeqb	%xmm0, %xmm4
+	PCMPEQ	%xmm0, %xmm4
 	pmovmskb	%xmm4, %edx
 	test	%edx, %edx
 	je 	L(next48_bytes)
 	bsf	%edx, %eax /* If eax is zeroed 16bit bsf can be used.  */
+	SHIFT_RETURN
 	ret
 
 L(next48_bytes):
 /* Same as FIND_ZERO except we do not check first 16 bytes.  */
 	andq	$-16, %rax
-	pcmpeqb 16(%rax), %xmm1
-	pcmpeqb 32(%rax), %xmm2
-	pcmpeqb 48(%rax), %xmm3
+	PCMPEQ 16(%rax), %xmm1
+	PCMPEQ 32(%rax), %xmm2
+	PCMPEQ 48(%rax), %xmm3
 	pmovmskb	%xmm1, %edx
 	pmovmskb	%xmm2, %r8d
 	pmovmskb	%xmm3, %ecx
@@ -145,6 +160,7 @@ L(strnlen_ret):
 	test	%rdx, %rdx
 	je	L(loop_init)
 	bsfq	%rdx, %rax
+	SHIFT_RETURN
 	ret
 #endif
 	.p2align 4
@@ -161,10 +177,10 @@ L(loop):
 	je	L(exit_end)
 
 	movdqa	(%rax), %xmm0
-	pminub	16(%rax), %xmm0
-	pminub	32(%rax), %xmm0
-	pminub	48(%rax), %xmm0
-	pcmpeqb	%xmm3, %xmm0
+	PMINU	16(%rax), %xmm0
+	PMINU	32(%rax), %xmm0
+	PMINU	48(%rax), %xmm0
+	PCMPEQ	%xmm3, %xmm0
 	pmovmskb	%xmm0, %edx
 	testl	%edx, %edx
 	jne	L(exit)
@@ -182,6 +198,7 @@ L(first):
 	bsfq	%rdx, %rdx
 	addq	%rdx, %rax
 	subq	%rdi, %rax
+	SHIFT_RETURN
 	ret
 
 	.p2align 4
@@ -192,6 +209,7 @@ L(exit):
 	bsfq	%rdx, %rdx
 	addq	%rdx, %rax
 	subq	%rdi, %rax
+	SHIFT_RETURN
 	ret
 
 #else
@@ -201,10 +219,10 @@ L(exit):
 L(loop):
 
 	movdqa	64(%rax), %xmm0
-	pminub	80(%rax), %xmm0
-	pminub	96(%rax), %xmm0
-	pminub	112(%rax), %xmm0
-	pcmpeqb	%xmm3, %xmm0
+	PMINU	80(%rax), %xmm0
+	PMINU	96(%rax), %xmm0
+	PMINU	112(%rax), %xmm0
+	PCMPEQ	%xmm3, %xmm0
 	pmovmskb	%xmm0, %edx
 	testl	%edx, %edx
 	jne	L(exit64)
@@ -212,10 +230,10 @@ L(loop):
 	subq	$-128, %rax
 
 	movdqa	(%rax), %xmm0
-	pminub	16(%rax), %xmm0
-	pminub	32(%rax), %xmm0
-	pminub	48(%rax), %xmm0
-	pcmpeqb	%xmm3, %xmm0
+	PMINU	16(%rax), %xmm0
+	PMINU	32(%rax), %xmm0
+	PMINU	48(%rax), %xmm0
+	PCMPEQ	%xmm3, %xmm0
 	pmovmskb	%xmm0, %edx
 	testl	%edx, %edx
 	jne	L(exit0)
@@ -231,6 +249,7 @@ L(exit0):
 	bsfq	%rdx, %rdx
 	addq	%rdx, %rax
 	subq	%rdi, %rax
+	SHIFT_RETURN
 	ret
 
 #endif
diff --git a/sysdeps/x86_64/wcslen.S b/sysdeps/x86_64/wcslen.S
index c6081a4..88ecdb2 100644
--- a/sysdeps/x86_64/wcslen.S
+++ b/sysdeps/x86_64/wcslen.S
@@ -1,238 +1,6 @@
-/* Optimized wcslen for x86-64 with SSE2.
-   Copyright (C) 2011-2017 Free Software Foundation, Inc.
-   Contributed by Intel Corporation.
-   This file is part of the GNU C Library.
+#define AS_WCSLEN
+#define strlen	__wcslen
 
-   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/>.  */
-
-#include <sysdep.h>
-
-	.text
-ENTRY (__wcslen)
-	cmpl	$0, (%rdi)
-	jz	L(exit_tail0)
-	cmpl	$0, 4(%rdi)
-	jz	L(exit_tail1)
-	cmpl	$0, 8(%rdi)
-	jz	L(exit_tail2)
-	cmpl	$0, 12(%rdi)
-	jz	L(exit_tail3)
-	cmpl	$0, 16(%rdi)
-	jz	L(exit_tail4)
-	cmpl	$0, 20(%rdi)
-	jz	L(exit_tail5)
-	cmpl	$0, 24(%rdi)
-	jz	L(exit_tail6)
-	cmpl	$0, 28(%rdi)
-	jz	L(exit_tail7)
-
-	pxor	%xmm0, %xmm0
-
-	lea	32(%rdi), %rax
-	lea	16(%rdi), %rcx
-	and	$-16, %rax
-
-	pcmpeqd	(%rax), %xmm0
-	pmovmskb %xmm0, %edx
-	pxor	%xmm1, %xmm1
-	test	%edx, %edx
-	lea	16(%rax), %rax
-	jnz	L(exit)
-
-	pcmpeqd	(%rax), %xmm1
-	pmovmskb %xmm1, %edx
-	pxor	%xmm2, %xmm2
-	test	%edx, %edx
-	lea	16(%rax), %rax
-	jnz	L(exit)
-
-	pcmpeqd	(%rax), %xmm2
-	pmovmskb %xmm2, %edx
-	pxor	%xmm3, %xmm3
-	test	%edx, %edx
-	lea	16(%rax), %rax
-	jnz	L(exit)
-
-	pcmpeqd	(%rax), %xmm3
-	pmovmskb %xmm3, %edx
-	test	%edx, %edx
-	lea	16(%rax), %rax
-	jnz	L(exit)
-
-	pcmpeqd	(%rax), %xmm0
-	pmovmskb %xmm0, %edx
-	test	%edx, %edx
-	lea	16(%rax), %rax
-	jnz	L(exit)
-
-	pcmpeqd	(%rax), %xmm1
-	pmovmskb %xmm1, %edx
-	test	%edx, %edx
-	lea	16(%rax), %rax
-	jnz	L(exit)
-
-	pcmpeqd	(%rax), %xmm2
-	pmovmskb %xmm2, %edx
-	test	%edx, %edx
-	lea	16(%rax), %rax
-	jnz	L(exit)
-
-	pcmpeqd	(%rax), %xmm3
-	pmovmskb %xmm3, %edx
-	test	%edx, %edx
-	lea	16(%rax), %rax
-	jnz	L(exit)
-
-	pcmpeqd	(%rax), %xmm0
-	pmovmskb %xmm0, %edx
-	test	%edx, %edx
-	lea	16(%rax), %rax
-	jnz	L(exit)
-
-	pcmpeqd	(%rax), %xmm1
-	pmovmskb %xmm1, %edx
-	test	%edx, %edx
-	lea	16(%rax), %rax
-	jnz	L(exit)
-
-	pcmpeqd	(%rax), %xmm2
-	pmovmskb %xmm2, %edx
-	test	%edx, %edx
-	lea	16(%rax), %rax
-	jnz	L(exit)
-
-	pcmpeqd	(%rax), %xmm3
-	pmovmskb %xmm3, %edx
-	test	%edx, %edx
-	lea	16(%rax), %rax
-	jnz	L(exit)
-
-	and	$-0x40, %rax
-
-	.p2align 4
-L(aligned_64_loop):
-	movaps	(%rax), %xmm0
-	movaps	16(%rax), %xmm1
-	movaps	32(%rax), %xmm2
-	movaps	48(%rax), %xmm6
-
-	pminub	%xmm1, %xmm0
-	pminub	%xmm6, %xmm2
-	pminub	%xmm0, %xmm2
-	pcmpeqd	%xmm3, %xmm2
-	pmovmskb %xmm2, %edx
-	test	%edx, %edx
-	lea	64(%rax), %rax
-	jz	L(aligned_64_loop)
-
-	pcmpeqd	-64(%rax), %xmm3
-	pmovmskb %xmm3, %edx
-	test	%edx, %edx
-	lea	48(%rcx), %rcx
-	jnz	L(exit)
-
-	pcmpeqd	%xmm1, %xmm3
-	pmovmskb %xmm3, %edx
-	test	%edx, %edx
-	lea	-16(%rcx), %rcx
-	jnz	L(exit)
-
-	pcmpeqd	-32(%rax), %xmm3
-	pmovmskb %xmm3, %edx
-	test	%edx, %edx
-	lea	-16(%rcx), %rcx
-	jnz	L(exit)
-
-	pcmpeqd	%xmm6, %xmm3
-	pmovmskb %xmm3, %edx
-	test	%edx, %edx
-	lea	-16(%rcx), %rcx
-	jnz	L(exit)
-
-	jmp	L(aligned_64_loop)
-
-	.p2align 4
-L(exit):
-	sub	%rcx, %rax
-	shr	$2, %rax
-	test	%dl, %dl
-	jz	L(exit_high)
-
-	mov	%dl, %cl
-	and	$15, %cl
-	jz	L(exit_1)
-	ret
-
-	.p2align 4
-L(exit_high):
-	mov	%dh, %ch
-	and	$15, %ch
-	jz	L(exit_3)
-	add	$2, %rax
-	ret
-
-	.p2align 4
-L(exit_1):
-	add	$1, %rax
-	ret
-
-	.p2align 4
-L(exit_3):
-	add	$3, %rax
-	ret
-
-	.p2align 4
-L(exit_tail0):
-	xor	%rax, %rax
-	ret
-
-	.p2align 4
-L(exit_tail1):
-	mov	$1, %rax
-	ret
-
-	.p2align 4
-L(exit_tail2):
-	mov	$2, %rax
-	ret
-
-	.p2align 4
-L(exit_tail3):
-	mov	$3, %rax
-	ret
-
-	.p2align 4
-L(exit_tail4):
-	mov	$4, %rax
-	ret
-
-	.p2align 4
-L(exit_tail5):
-	mov	$5, %rax
-	ret
-
-	.p2align 4
-L(exit_tail6):
-	mov	$6, %rax
-	ret
-
-	.p2align 4
-L(exit_tail7):
-	mov	$7, %rax
-	ret
-
-END (__wcslen)
+#include "strlen.S"
 
 weak_alias(__wcslen, wcslen)
diff --git a/sysdeps/x86_64/wcsnlen.S b/sysdeps/x86_64/wcsnlen.S
new file mode 100644
index 0000000..968bb69
--- /dev/null
+++ b/sysdeps/x86_64/wcsnlen.S
@@ -0,0 +1,7 @@
+#define AS_WCSLEN
+#define AS_STRNLEN
+#define strlen	__wcsnlen
+
+#include "strlen.S"
+
+weak_alias(__wcsnlen, wcsnlen)
