7 files changed, 105 insertions, 19 deletions
diff --git a/sysdeps/s390/Makefile b/sysdeps/s390/Makefile
index a181eeac8a..649f29adc2 100644
--- a/sysdeps/s390/Makefile
+++ b/sysdeps/s390/Makefile
@@ -77,5 +77,6 @@ sysdep_routines += bzero memset memset-z900 \
 		   strpbrk strpbrk-vx strpbrk-c \
 		   strcspn strcspn-vx strcspn-c \
 		   memchr memchr-vx memchr-z900 \
-		   rawmemchr rawmemchr-vx rawmemchr-c
+		   rawmemchr rawmemchr-vx rawmemchr-c \
+		   memccpy memccpy-vx memccpy-c
 endif
diff --git a/sysdeps/s390/ifunc-memccpy.h b/sysdeps/s390/ifunc-memccpy.h
new file mode 100644
index 0000000000..8f7a1d0f9f
--- /dev/null
+++ b/sysdeps/s390/ifunc-memccpy.h
@@ -0,0 +1,52 @@
+/* memccpy variant information on S/390 version.
+   Copyright (C) 2018 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/>.  */
+
+#if defined USE_MULTIARCH && IS_IN (libc)		\
+  && ! defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
+# define HAVE_MEMCCPY_IFUNC	1
+#else
+# define HAVE_MEMCCPY_IFUNC	0
+#endif
+
+#ifdef HAVE_S390_VX_ASM_SUPPORT
+# define HAVE_MEMCCPY_IFUNC_AND_VX_SUPPORT HAVE_MEMCCPY_IFUNC
+#else
+# define HAVE_MEMCCPY_IFUNC_AND_VX_SUPPORT 0
+#endif
+
+#if defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
+# define MEMCCPY_DEFAULT	MEMCCPY_Z13
+# define HAVE_MEMCCPY_C		0
+# define HAVE_MEMCCPY_Z13	1
+#else
+# define MEMCCPY_DEFAULT	MEMCCPY_C
+# define HAVE_MEMCCPY_C		1
+# define HAVE_MEMCCPY_Z13	HAVE_MEMCCPY_IFUNC_AND_VX_SUPPORT
+#endif
+
+#if HAVE_MEMCCPY_C
+# define MEMCCPY_C		__memccpy_c
+#else
+# define MEMCCPY_C		NULL
+#endif
+
+#if HAVE_MEMCCPY_Z13
+# define MEMCCPY_Z13		__memccpy_vx
+#else
+# define MEMCCPY_Z13		NULL
+#endif
diff --git a/sysdeps/s390/multiarch/memccpy-c.c b/sysdeps/s390/memccpy-c.c
index 1f4c548199..2b2f81eb9c 100644
--- a/sysdeps/s390/multiarch/memccpy-c.c
+++ b/sysdeps/s390/memccpy-c.c
@@ -16,10 +16,14 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
-# define MEMCCPY  __memccpy_c
+#include <ifunc-memccpy.h>
+
+#if HAVE_MEMCCPY_C
+# if HAVE_MEMCCPY_IFUNC
+#  define MEMCCPY MEMCCPY_C
+#  undef weak_alias
+#  define weak_alias(a, b)
+#endif
 
-# include <string.h>
-extern __typeof (__memccpy) __memccpy_c;
 # include <string/memccpy.c>
 #endif
diff --git a/sysdeps/s390/multiarch/memccpy-vx.S b/sysdeps/s390/memccpy-vx.S
index 150aa0e4a4..44f7bc5824 100644
--- a/sysdeps/s390/multiarch/memccpy-vx.S
+++ b/sysdeps/s390/memccpy-vx.S
@@ -16,7 +16,9 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
+#include <ifunc-memccpy.h>
+
+#if HAVE_MEMCCPY_Z13
 
 # include "sysdep.h"
 # include "asm-syntax.h"
@@ -42,7 +44,7 @@
    -v19=part #2 of s
    -v31=save area for r6
 */
-ENTRY(__memccpy_vx)
+ENTRY(MEMCCPY_Z13)
 	.machine "z13"
 	.machinemode "zarch_nohighgprs"
 
@@ -152,5 +154,11 @@ ENTRY(__memccpy_vx)
 	vlgvg	%r7,%v31,1
 	lghi	%r2,0		/* Return null.  */
 	br	%r14
-END(__memccpy_vx)
-#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */
+END(MEMCCPY_Z13)
+
+# if ! HAVE_MEMCCPY_IFUNC
+strong_alias (MEMCCPY_Z13, __memccpy)
+weak_alias (__memccpy, memccpy)
+# endif
+
+#endif /* HAVE_MEMCCPY_Z13  */
diff --git a/sysdeps/s390/multiarch/memccpy.c b/sysdeps/s390/memccpy.c
index 30aae82321..bcfeb31e86 100644
--- a/sysdeps/s390/multiarch/memccpy.c
+++ b/sysdeps/s390/memccpy.c
@@ -16,13 +16,24 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
+#include <ifunc-memccpy.h>
+
+#if HAVE_MEMCCPY_IFUNC
 # include <string.h>
 # include <ifunc-resolve.h>
 
-s390_vx_libc_ifunc (__memccpy)
-weak_alias (__memccpy, memccpy)
+# if HAVE_MEMCCPY_C
+extern __typeof (__memccpy) MEMCCPY_C attribute_hidden;
+# endif
 
-#else
-# include <string/memccpy.c>
-#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */
+# if HAVE_MEMCCPY_Z13
+extern __typeof (__memccpy) MEMCCPY_Z13 attribute_hidden;
+# endif
+
+s390_libc_ifunc_expr (__memccpy, __memccpy,
+		      (HAVE_MEMCCPY_Z13 && (hwcap & HWCAP_S390_VX))
+		      ? MEMCCPY_Z13
+		      : MEMCCPY_DEFAULT
+		      )
+weak_alias (__memccpy, memccpy)
+#endif /* HAVE_MEMCCPY_IFUNC  */
diff --git a/sysdeps/s390/multiarch/Makefile b/sysdeps/s390/multiarch/Makefile
index ac6cfcf9c7..d5a32fc309 100644
--- a/sysdeps/s390/multiarch/Makefile
+++ b/sysdeps/s390/multiarch/Makefile
@@ -1,6 +1,5 @@
 ifeq ($(subdir),string)
-sysdep_routines += memccpy memccpy-vx memccpy-c \
-		   memrchr memrchr-vx memrchr-c
+sysdep_routines += memrchr memrchr-vx memrchr-c
 endif
 
 ifeq ($(subdir),wcsmbs)
diff --git a/sysdeps/s390/multiarch/ifunc-impl-list.c b/sysdeps/s390/multiarch/ifunc-impl-list.c
index bf3b40e111..b8917747f0 100644
--- a/sysdeps/s390/multiarch/ifunc-impl-list.c
+++ b/sysdeps/s390/multiarch/ifunc-impl-list.c
@@ -44,6 +44,7 @@
 #include <ifunc-strcspn.h>
 #include <ifunc-memchr.h>
 #include <ifunc-rawmemchr.h>
+#include <ifunc-memccpy.h>
 
 /* Maximum number of IFUNC implementations.  */
 #define MAX_IFUNC	3
@@ -398,6 +399,18 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
 		)
 #endif /* HAVE_RAWMEMCHR_IFUNC  */
 
+#if HAVE_MEMCCPY_IFUNC
+    IFUNC_IMPL (i, name, memccpy,
+# if HAVE_MEMCCPY_Z13
+		IFUNC_IMPL_ADD (array, i, memccpy,
+				dl_hwcap & HWCAP_S390_VX, MEMCCPY_Z13)
+# endif
+# if HAVE_MEMCCPY_C
+		IFUNC_IMPL_ADD (array, i, memccpy, 1, MEMCCPY_C)
+# endif
+		)
+#endif /* HAVE_MEMCCPY_IFUNC  */
+
 #ifdef HAVE_S390_VX_ASM_SUPPORT
 
 # define IFUNC_VX_IMPL(FUNC)						\
@@ -440,8 +453,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
 
   IFUNC_VX_IMPL (wmemchr);
 
-  IFUNC_VX_IMPL (memccpy);
-
   IFUNC_VX_IMPL (wmemset);
 
   IFUNC_VX_IMPL (wmemcmp);