@@ -78,5 +78,6 @@ sysdep_routines += bzero memset memset-z900 \
strcspn strcspn-vx strcspn-c \
memchr memchr-vx memchr-z900 \
rawmemchr rawmemchr-vx rawmemchr-c \
- memccpy memccpy-vx memccpy-c
+ memccpy memccpy-vx memccpy-c \
+ memrchr memrchr-vx memrchr-c
endif
new file mode 100644
@@ -0,0 +1,52 @@
+/* memrchr 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_MEMRCHR_IFUNC 1
+#else
+# define HAVE_MEMRCHR_IFUNC 0
+#endif
+
+#ifdef HAVE_S390_VX_ASM_SUPPORT
+# define HAVE_MEMRCHR_IFUNC_AND_VX_SUPPORT HAVE_MEMRCHR_IFUNC
+#else
+# define HAVE_MEMRCHR_IFUNC_AND_VX_SUPPORT 0
+#endif
+
+#if defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
+# define MEMRCHR_DEFAULT MEMRCHR_Z13
+# define HAVE_MEMRCHR_C 0
+# define HAVE_MEMRCHR_Z13 1
+#else
+# define MEMRCHR_DEFAULT MEMRCHR_C
+# define HAVE_MEMRCHR_C 1
+# define HAVE_MEMRCHR_Z13 HAVE_MEMRCHR_IFUNC_AND_VX_SUPPORT
+#endif
+
+#if HAVE_MEMRCHR_C
+# define MEMRCHR_C __memrchr_c
+#else
+# define MEMRCHR_C NULL
+#endif
+
+#if HAVE_MEMRCHR_Z13
+# define MEMRCHR_Z13 __memrchr_vx
+#else
+# define MEMRCHR_Z13 NULL
+#endif
similarity index 85%
rename from sysdeps/s390/multiarch/memrchr-c.c
rename to sysdeps/s390/memrchr-c.c
@@ -16,10 +16,12 @@
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 MEMRCHR __memrchr_c
+#include <ifunc-memrchr.h>
+
+#if HAVE_MEMRCHR_C
+# if HAVE_MEMRCHR_IFUNC
+# define MEMRCHR MEMRCHR_C
+# endif
-# include <string.h>
-extern __typeof (__memrchr) __memrchr_c;
# include <string/memrchr.c>
#endif
similarity index 94%
rename from sysdeps/s390/multiarch/memrchr-vx.S
rename to sysdeps/s390/memrchr-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-memrchr.h>
+
+#if HAVE_MEMRCHR_Z13
# include "sysdep.h"
# include "asm-syntax.h"
@@ -40,7 +42,7 @@
-v18=c replicated
-v20=permute pattern
*/
-ENTRY(__memrchr_vx)
+ENTRY(MEMRCHR_Z13)
.machine "z13"
.machinemode "zarch_nohighgprs"
@@ -156,5 +158,11 @@ ENTRY(__memrchr_vx)
clgijhe %r4,64,.Lloop64 /* If n >= 64 -> loop64. */
j .Llt64
-END(__memrchr_vx)
-#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */
+END(MEMRCHR_Z13)
+
+# if ! HAVE_MEMRCHR_IFUNC
+strong_alias (MEMRCHR_Z13, __memrchr)
+weak_alias (__memrchr, memrchr)
+# endif
+
+#endif /* HAVE_MEMRCHR_Z13 */
similarity index 68%
rename from sysdeps/s390/multiarch/memrchr.c
rename to sysdeps/s390/memrchr.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-memrchr.h>
+
+#if HAVE_MEMRCHR_IFUNC
# include <string.h>
# include <ifunc-resolve.h>
-s390_vx_libc_ifunc (__memrchr)
-weak_alias (__memrchr, memrchr)
+# if HAVE_MEMRCHR_C
+extern __typeof (__memrchr) MEMRCHR_C attribute_hidden;
+# endif
-#else
-# include <string/memrchr.c>
-#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */
+# if HAVE_MEMRCHR_Z13
+extern __typeof (__memrchr) MEMRCHR_Z13 attribute_hidden;
+# endif
+
+s390_libc_ifunc_expr (__memrchr, __memrchr,
+ (HAVE_MEMRCHR_Z13 && (hwcap & HWCAP_S390_VX))
+ ? MEMRCHR_Z13
+ : MEMRCHR_DEFAULT
+ )
+weak_alias (__memrchr, memrchr)
+#endif /* HAVE_MEMRCHR_IFUNC */
@@ -1,7 +1,3 @@
-ifeq ($(subdir),string)
-sysdep_routines += memrchr memrchr-vx memrchr-c
-endif
-
ifeq ($(subdir),wcsmbs)
sysdep_routines += wcslen wcslen-vx wcslen-c \
wcsnlen wcsnlen-vx wcsnlen-c \
@@ -45,6 +45,7 @@
#include <ifunc-memchr.h>
#include <ifunc-rawmemchr.h>
#include <ifunc-memccpy.h>
+#include <ifunc-memrchr.h>
/* Maximum number of IFUNC implementations. */
#define MAX_IFUNC 3
@@ -411,6 +412,18 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
)
#endif /* HAVE_MEMCCPY_IFUNC */
+#if HAVE_MEMRCHR_IFUNC
+ IFUNC_IMPL (i, name, memrchr,
+# if HAVE_MEMRCHR_Z13
+ IFUNC_IMPL_ADD (array, i, memrchr,
+ dl_hwcap & HWCAP_S390_VX, MEMRCHR_Z13)
+# endif
+# if HAVE_MEMRCHR_C
+ IFUNC_IMPL_ADD (array, i, memrchr, 1, MEMRCHR_C)
+# endif
+ )
+#endif /* HAVE_MEMRCHR_IFUNC */
+
#ifdef HAVE_S390_VX_ASM_SUPPORT
# define IFUNC_VX_IMPL(FUNC) \
@@ -457,8 +470,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_VX_IMPL (wmemcmp);
- IFUNC_VX_IMPL (memrchr);
-
#endif /* HAVE_S390_VX_ASM_SUPPORT */
return i;