|
 |
077c9d |
commit 89bfcbdf9d3d36eff0d544f655991149a7ae680b
|
|
|
077c9d |
Author: Stefan Liebler <stli@linux.ibm.com>
|
|
|
077c9d |
Date: Tue Dec 18 13:57:17 2018 +0100
|
|
|
077c9d |
|
|
|
077c9d |
S390: Refactor memrchr ifunc handling.
|
|
|
077c9d |
|
|
|
077c9d |
The ifunc handling for memrchr is adjusted in order to omit ifunc
|
|
|
077c9d |
variants if those will never be used as the minimum architecture level
|
|
|
077c9d |
already supports newer CPUs by default.
|
|
|
077c9d |
|
|
|
077c9d |
ChangeLog:
|
|
|
077c9d |
|
|
|
077c9d |
* sysdeps/s390/multiarch/Makefile
|
|
|
077c9d |
(sysdep_routines): Remove memrchr variants.
|
|
|
077c9d |
* sysdeps/s390/Makefile (sysdep_routines): Add memrchr variants.
|
|
|
077c9d |
* sysdeps/s390/multiarch/ifunc-impl-list.c
|
|
|
077c9d |
(__libc_ifunc_impl_list): Refactor ifunc handling for memrchr.
|
|
|
077c9d |
* sysdeps/s390/multiarch/memrchr-c.c: Move to ...
|
|
|
077c9d |
* sysdeps/s390/memrchr-c.c: ... here and adjust ifunc handling.
|
|
|
077c9d |
* sysdeps/s390/multiarch/memrchr-vx.S: Move to ...
|
|
|
077c9d |
* sysdeps/s390/memrchr-vx.S: ... here and adjust ifunc handling.
|
|
|
077c9d |
* sysdeps/s390/multiarch/memrchr.c: Move to ...
|
|
|
077c9d |
* sysdeps/s390/memrchr.c: ... here and adjust ifunc handling.
|
|
|
077c9d |
* sysdeps/s390/ifunc-memrchr.h: New file.
|
|
|
077c9d |
|
|
|
077c9d |
diff --git a/sysdeps/s390/Makefile b/sysdeps/s390/Makefile
|
|
|
077c9d |
index 239426dbc1ce9d09..9a16ce1692e51607 100644
|
|
|
077c9d |
--- a/sysdeps/s390/Makefile
|
|
|
077c9d |
+++ b/sysdeps/s390/Makefile
|
|
|
077c9d |
@@ -55,5 +55,6 @@ sysdep_routines += bzero memset memset-z900 \
|
|
|
077c9d |
strcspn strcspn-vx strcspn-c \
|
|
|
077c9d |
memchr memchr-vx memchr-z900 \
|
|
|
077c9d |
rawmemchr rawmemchr-vx rawmemchr-c \
|
|
|
077c9d |
- memccpy memccpy-vx memccpy-c
|
|
|
077c9d |
+ memccpy memccpy-vx memccpy-c \
|
|
|
077c9d |
+ memrchr memrchr-vx memrchr-c
|
|
|
077c9d |
endif
|
|
|
077c9d |
diff --git a/sysdeps/s390/ifunc-memrchr.h b/sysdeps/s390/ifunc-memrchr.h
|
|
|
077c9d |
new file mode 100644
|
|
|
077c9d |
index 0000000000000000..9d80d5528dc92dab
|
|
|
077c9d |
--- /dev/null
|
|
|
077c9d |
+++ b/sysdeps/s390/ifunc-memrchr.h
|
|
|
077c9d |
@@ -0,0 +1,52 @@
|
|
|
077c9d |
+/* memrchr variant information on S/390 version.
|
|
|
077c9d |
+ Copyright (C) 2018 Free Software Foundation, Inc.
|
|
|
077c9d |
+ This file is part of the GNU C Library.
|
|
|
077c9d |
+
|
|
|
077c9d |
+ The GNU C Library is free software; you can redistribute it and/or
|
|
|
077c9d |
+ modify it under the terms of the GNU Lesser General Public
|
|
|
077c9d |
+ License as published by the Free Software Foundation; either
|
|
|
077c9d |
+ version 2.1 of the License, or (at your option) any later version.
|
|
|
077c9d |
+
|
|
|
077c9d |
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
|
077c9d |
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
077c9d |
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
077c9d |
+ Lesser General Public License for more details.
|
|
|
077c9d |
+
|
|
|
077c9d |
+ You should have received a copy of the GNU Lesser General Public
|
|
|
077c9d |
+ License along with the GNU C Library; if not, see
|
|
|
077c9d |
+ <http://www.gnu.org/licenses/>. */
|
|
|
077c9d |
+
|
|
|
077c9d |
+#if defined USE_MULTIARCH && IS_IN (libc) \
|
|
|
077c9d |
+ && ! defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
|
|
|
077c9d |
+# define HAVE_MEMRCHR_IFUNC 1
|
|
|
077c9d |
+#else
|
|
|
077c9d |
+# define HAVE_MEMRCHR_IFUNC 0
|
|
|
077c9d |
+#endif
|
|
|
077c9d |
+
|
|
|
077c9d |
+#ifdef HAVE_S390_VX_ASM_SUPPORT
|
|
|
077c9d |
+# define HAVE_MEMRCHR_IFUNC_AND_VX_SUPPORT HAVE_MEMRCHR_IFUNC
|
|
|
077c9d |
+#else
|
|
|
077c9d |
+# define HAVE_MEMRCHR_IFUNC_AND_VX_SUPPORT 0
|
|
|
077c9d |
+#endif
|
|
|
077c9d |
+
|
|
|
077c9d |
+#if defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
|
|
|
077c9d |
+# define MEMRCHR_DEFAULT MEMRCHR_Z13
|
|
|
077c9d |
+# define HAVE_MEMRCHR_C 0
|
|
|
077c9d |
+# define HAVE_MEMRCHR_Z13 1
|
|
|
077c9d |
+#else
|
|
|
077c9d |
+# define MEMRCHR_DEFAULT MEMRCHR_C
|
|
|
077c9d |
+# define HAVE_MEMRCHR_C 1
|
|
|
077c9d |
+# define HAVE_MEMRCHR_Z13 HAVE_MEMRCHR_IFUNC_AND_VX_SUPPORT
|
|
|
077c9d |
+#endif
|
|
|
077c9d |
+
|
|
|
077c9d |
+#if HAVE_MEMRCHR_C
|
|
|
077c9d |
+# define MEMRCHR_C __memrchr_c
|
|
|
077c9d |
+#else
|
|
|
077c9d |
+# define MEMRCHR_C NULL
|
|
|
077c9d |
+#endif
|
|
|
077c9d |
+
|
|
|
077c9d |
+#if HAVE_MEMRCHR_Z13
|
|
|
077c9d |
+# define MEMRCHR_Z13 __memrchr_vx
|
|
|
077c9d |
+#else
|
|
|
077c9d |
+# define MEMRCHR_Z13 NULL
|
|
|
077c9d |
+#endif
|
|
|
077c9d |
diff --git a/sysdeps/s390/multiarch/memrchr-c.c b/sysdeps/s390/memrchr-c.c
|
|
|
077c9d |
similarity index 85%
|
|
|
077c9d |
rename from sysdeps/s390/multiarch/memrchr-c.c
|
|
|
077c9d |
rename to sysdeps/s390/memrchr-c.c
|
|
|
077c9d |
index 1e3c914a5d61dbc5..333c0fc8d1855323 100644
|
|
|
077c9d |
--- a/sysdeps/s390/multiarch/memrchr-c.c
|
|
|
077c9d |
+++ b/sysdeps/s390/memrchr-c.c
|
|
|
077c9d |
@@ -16,10 +16,12 @@
|
|
|
077c9d |
License along with the GNU C Library; if not, see
|
|
|
077c9d |
<http://www.gnu.org/licenses/>. */
|
|
|
077c9d |
|
|
|
077c9d |
-#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
|
|
|
077c9d |
-# define MEMRCHR __memrchr_c
|
|
|
077c9d |
+#include <ifunc-memrchr.h>
|
|
|
077c9d |
+
|
|
|
077c9d |
+#if HAVE_MEMRCHR_C
|
|
|
077c9d |
+# if HAVE_MEMRCHR_IFUNC
|
|
|
077c9d |
+# define MEMRCHR MEMRCHR_C
|
|
|
077c9d |
+# endif
|
|
|
077c9d |
|
|
|
077c9d |
-# include <string.h>
|
|
|
077c9d |
-extern __typeof (__memrchr) __memrchr_c;
|
|
|
077c9d |
# include <string/memrchr.c>
|
|
|
077c9d |
#endif
|
|
|
077c9d |
diff --git a/sysdeps/s390/multiarch/memrchr-vx.S b/sysdeps/s390/memrchr-vx.S
|
|
|
077c9d |
similarity index 94%
|
|
|
077c9d |
rename from sysdeps/s390/multiarch/memrchr-vx.S
|
|
|
077c9d |
rename to sysdeps/s390/memrchr-vx.S
|
|
|
077c9d |
index 8e81f5ed7519c2cc..ba832f1b21ad5a4c 100644
|
|
|
077c9d |
--- a/sysdeps/s390/multiarch/memrchr-vx.S
|
|
|
077c9d |
+++ b/sysdeps/s390/memrchr-vx.S
|
|
|
077c9d |
@@ -16,7 +16,9 @@
|
|
|
077c9d |
License along with the GNU C Library; if not, see
|
|
|
077c9d |
<http://www.gnu.org/licenses/>. */
|
|
|
077c9d |
|
|
|
077c9d |
-#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
|
|
|
077c9d |
+#include <ifunc-memrchr.h>
|
|
|
077c9d |
+
|
|
|
077c9d |
+#if HAVE_MEMRCHR_Z13
|
|
|
077c9d |
|
|
|
077c9d |
# include "sysdep.h"
|
|
|
077c9d |
# include "asm-syntax.h"
|
|
|
077c9d |
@@ -40,7 +42,7 @@
|
|
|
077c9d |
-v18=c replicated
|
|
|
077c9d |
-v20=permute pattern
|
|
|
077c9d |
*/
|
|
|
077c9d |
-ENTRY(__memrchr_vx)
|
|
|
077c9d |
+ENTRY(MEMRCHR_Z13)
|
|
|
077c9d |
.machine "z13"
|
|
|
077c9d |
.machinemode "zarch_nohighgprs"
|
|
|
077c9d |
|
|
|
077c9d |
@@ -156,5 +158,11 @@ ENTRY(__memrchr_vx)
|
|
|
077c9d |
|
|
|
077c9d |
clgijhe %r4,64,.Lloop64 /* If n >= 64 -> loop64. */
|
|
|
077c9d |
j .Llt64
|
|
|
077c9d |
-END(__memrchr_vx)
|
|
|
077c9d |
-#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */
|
|
|
077c9d |
+END(MEMRCHR_Z13)
|
|
|
077c9d |
+
|
|
|
077c9d |
+# if ! HAVE_MEMRCHR_IFUNC
|
|
|
077c9d |
+strong_alias (MEMRCHR_Z13, __memrchr)
|
|
|
077c9d |
+weak_alias (__memrchr, memrchr)
|
|
|
077c9d |
+# endif
|
|
|
077c9d |
+
|
|
|
077c9d |
+#endif /* HAVE_MEMRCHR_Z13 */
|
|
|
077c9d |
diff --git a/sysdeps/s390/multiarch/memrchr.c b/sysdeps/s390/memrchr.c
|
|
|
077c9d |
similarity index 68%
|
|
|
077c9d |
rename from sysdeps/s390/multiarch/memrchr.c
|
|
|
077c9d |
rename to sysdeps/s390/memrchr.c
|
|
|
077c9d |
index 43a44abcf6cc3bdc..d995e9961c1cc9eb 100644
|
|
|
077c9d |
--- a/sysdeps/s390/multiarch/memrchr.c
|
|
|
077c9d |
+++ b/sysdeps/s390/memrchr.c
|
|
|
077c9d |
@@ -16,13 +16,24 @@
|
|
|
077c9d |
License along with the GNU C Library; if not, see
|
|
|
077c9d |
<http://www.gnu.org/licenses/>. */
|
|
|
077c9d |
|
|
|
077c9d |
-#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
|
|
|
077c9d |
+#include <ifunc-memrchr.h>
|
|
|
077c9d |
+
|
|
|
077c9d |
+#if HAVE_MEMRCHR_IFUNC
|
|
|
077c9d |
# include <string.h>
|
|
|
077c9d |
# include <ifunc-resolve.h>
|
|
|
077c9d |
|
|
|
077c9d |
-s390_vx_libc_ifunc (__memrchr)
|
|
|
077c9d |
-weak_alias (__memrchr, memrchr)
|
|
|
077c9d |
+# if HAVE_MEMRCHR_C
|
|
|
077c9d |
+extern __typeof (__memrchr) MEMRCHR_C attribute_hidden;
|
|
|
077c9d |
+# endif
|
|
|
077c9d |
|
|
|
077c9d |
-#else
|
|
|
077c9d |
-# include <string/memrchr.c>
|
|
|
077c9d |
-#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */
|
|
|
077c9d |
+# if HAVE_MEMRCHR_Z13
|
|
|
077c9d |
+extern __typeof (__memrchr) MEMRCHR_Z13 attribute_hidden;
|
|
|
077c9d |
+# endif
|
|
|
077c9d |
+
|
|
|
077c9d |
+s390_libc_ifunc_expr (__memrchr, __memrchr,
|
|
|
077c9d |
+ (HAVE_MEMRCHR_Z13 && (hwcap & HWCAP_S390_VX))
|
|
|
077c9d |
+ ? MEMRCHR_Z13
|
|
|
077c9d |
+ : MEMRCHR_DEFAULT
|
|
|
077c9d |
+ )
|
|
|
077c9d |
+weak_alias (__memrchr, memrchr)
|
|
|
077c9d |
+#endif /* HAVE_MEMRCHR_IFUNC */
|
|
|
077c9d |
diff --git a/sysdeps/s390/multiarch/Makefile b/sysdeps/s390/multiarch/Makefile
|
|
|
077c9d |
index d5a32fc309ba4b3c..260b514936b93306 100644
|
|
|
077c9d |
--- a/sysdeps/s390/multiarch/Makefile
|
|
|
077c9d |
+++ b/sysdeps/s390/multiarch/Makefile
|
|
|
077c9d |
@@ -1,7 +1,3 @@
|
|
|
077c9d |
-ifeq ($(subdir),string)
|
|
|
077c9d |
-sysdep_routines += memrchr memrchr-vx memrchr-c
|
|
|
077c9d |
-endif
|
|
|
077c9d |
-
|
|
|
077c9d |
ifeq ($(subdir),wcsmbs)
|
|
|
077c9d |
sysdep_routines += wcslen wcslen-vx wcslen-c \
|
|
|
077c9d |
wcsnlen wcsnlen-vx wcsnlen-c \
|
|
|
077c9d |
diff --git a/sysdeps/s390/multiarch/ifunc-impl-list.c b/sysdeps/s390/multiarch/ifunc-impl-list.c
|
|
|
077c9d |
index b8917747f0f23cd9..0f01b99691002be0 100644
|
|
|
077c9d |
--- a/sysdeps/s390/multiarch/ifunc-impl-list.c
|
|
|
077c9d |
+++ b/sysdeps/s390/multiarch/ifunc-impl-list.c
|
|
|
077c9d |
@@ -45,6 +45,7 @@
|
|
|
077c9d |
#include <ifunc-memchr.h>
|
|
|
077c9d |
#include <ifunc-rawmemchr.h>
|
|
|
077c9d |
#include <ifunc-memccpy.h>
|
|
|
077c9d |
+#include <ifunc-memrchr.h>
|
|
|
077c9d |
|
|
|
077c9d |
/* Maximum number of IFUNC implementations. */
|
|
|
077c9d |
#define MAX_IFUNC 3
|
|
|
077c9d |
@@ -411,6 +412,18 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
|
|
|
077c9d |
)
|
|
|
077c9d |
#endif /* HAVE_MEMCCPY_IFUNC */
|
|
|
077c9d |
|
|
|
077c9d |
+#if HAVE_MEMRCHR_IFUNC
|
|
|
077c9d |
+ IFUNC_IMPL (i, name, memrchr,
|
|
|
077c9d |
+# if HAVE_MEMRCHR_Z13
|
|
|
077c9d |
+ IFUNC_IMPL_ADD (array, i, memrchr,
|
|
|
077c9d |
+ dl_hwcap & HWCAP_S390_VX, MEMRCHR_Z13)
|
|
|
077c9d |
+# endif
|
|
|
077c9d |
+# if HAVE_MEMRCHR_C
|
|
|
077c9d |
+ IFUNC_IMPL_ADD (array, i, memrchr, 1, MEMRCHR_C)
|
|
|
077c9d |
+# endif
|
|
|
077c9d |
+ )
|
|
|
077c9d |
+#endif /* HAVE_MEMRCHR_IFUNC */
|
|
|
077c9d |
+
|
|
|
077c9d |
#ifdef HAVE_S390_VX_ASM_SUPPORT
|
|
|
077c9d |
|
|
|
077c9d |
# define IFUNC_VX_IMPL(FUNC) \
|
|
|
077c9d |
@@ -457,8 +470,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
|
|
|
077c9d |
|
|
|
077c9d |
IFUNC_VX_IMPL (wmemcmp);
|
|
|
077c9d |
|
|
|
077c9d |
- IFUNC_VX_IMPL (memrchr);
|
|
|
077c9d |
-
|
|
|
077c9d |
#endif /* HAVE_S390_VX_ASM_SUPPORT */
|
|
|
077c9d |
|
|
|
077c9d |
return i;
|