|
 |
bdc76f |
commit b935335155d65971fe2a54e32c0eb74303d4e4fc
|
|
|
bdc76f |
Author: Stefan Liebler <stli@linux.ibm.com>
|
|
|
bdc76f |
Date: Tue Dec 18 13:57:12 2018 +0100
|
|
|
bdc76f |
|
|
|
bdc76f |
S390: Refactor strncat ifunc handling.
|
|
|
bdc76f |
|
|
|
bdc76f |
The ifunc handling for strncat is adjusted in order to omit ifunc
|
|
|
bdc76f |
variants if those will never be used as the minimum architecture level
|
|
|
bdc76f |
already supports newer CPUs by default.
|
|
|
bdc76f |
Glibc internal calls will then also use the "newer" ifunc variant.
|
|
|
bdc76f |
|
|
|
bdc76f |
ChangeLog:
|
|
|
bdc76f |
|
|
|
bdc76f |
* sysdeps/s390/multiarch/Makefile
|
|
|
bdc76f |
(sysdep_routines): Remove strncat variants.
|
|
|
bdc76f |
* sysdeps/s390/Makefile (sysdep_routines): Add strncat variants.
|
|
|
bdc76f |
* sysdeps/s390/multiarch/ifunc-impl-list.c
|
|
|
bdc76f |
(__libc_ifunc_impl_list): Refactor ifunc handling for strncat.
|
|
|
bdc76f |
* sysdeps/s390/multiarch/strncat-c.c: Move to ...
|
|
|
bdc76f |
* sysdeps/s390/strncat-c.c: ... here and adjust ifunc handling.
|
|
|
bdc76f |
* sysdeps/s390/multiarch/strncat-vx.S: Move to ...
|
|
|
bdc76f |
* sysdeps/s390/strncat-vx.S: ... here and adjust ifunc handling.
|
|
|
bdc76f |
* sysdeps/s390/multiarch/strncat.c: Move to ...
|
|
|
bdc76f |
* sysdeps/s390/strncat.c: ... here and adjust ifunc handling.
|
|
|
bdc76f |
* sysdeps/s390/ifunc-strncat.h: New file.
|
|
|
bdc76f |
|
|
|
bdc76f |
diff --git a/sysdeps/s390/Makefile b/sysdeps/s390/Makefile
|
|
|
bdc76f |
index de2d5e5652dde412..cb5dc1d4f95fd11c 100644
|
|
|
bdc76f |
--- a/sysdeps/s390/Makefile
|
|
|
bdc76f |
+++ b/sysdeps/s390/Makefile
|
|
|
bdc76f |
@@ -43,5 +43,6 @@ sysdep_routines += bzero memset memset-z900 \
|
|
|
bdc76f |
stpcpy stpcpy-vx stpcpy-c \
|
|
|
bdc76f |
strncpy strncpy-vx strncpy-z900 \
|
|
|
bdc76f |
stpncpy stpncpy-vx stpncpy-c \
|
|
|
bdc76f |
- strcat strcat-vx strcat-c
|
|
|
bdc76f |
+ strcat strcat-vx strcat-c \
|
|
|
bdc76f |
+ strncat strncat-vx strncat-c
|
|
|
bdc76f |
endif
|
|
|
bdc76f |
diff --git a/sysdeps/s390/ifunc-strncat.h b/sysdeps/s390/ifunc-strncat.h
|
|
|
bdc76f |
new file mode 100644
|
|
|
bdc76f |
index 0000000000000000..bb164dcc32905b18
|
|
|
bdc76f |
--- /dev/null
|
|
|
bdc76f |
+++ b/sysdeps/s390/ifunc-strncat.h
|
|
|
bdc76f |
@@ -0,0 +1,52 @@
|
|
|
bdc76f |
+/* strncat variant information on S/390 version.
|
|
|
bdc76f |
+ Copyright (C) 2018 Free Software Foundation, Inc.
|
|
|
bdc76f |
+ This file is part of the GNU C Library.
|
|
|
bdc76f |
+
|
|
|
bdc76f |
+ The GNU C Library is free software; you can redistribute it and/or
|
|
|
bdc76f |
+ modify it under the terms of the GNU Lesser General Public
|
|
|
bdc76f |
+ License as published by the Free Software Foundation; either
|
|
|
bdc76f |
+ version 2.1 of the License, or (at your option) any later version.
|
|
|
bdc76f |
+
|
|
|
bdc76f |
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
|
bdc76f |
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
bdc76f |
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
bdc76f |
+ Lesser General Public License for more details.
|
|
|
bdc76f |
+
|
|
|
bdc76f |
+ You should have received a copy of the GNU Lesser General Public
|
|
|
bdc76f |
+ License along with the GNU C Library; if not, see
|
|
|
bdc76f |
+ <http://www.gnu.org/licenses/>. */
|
|
|
bdc76f |
+
|
|
|
bdc76f |
+#if defined USE_MULTIARCH && IS_IN (libc) \
|
|
|
bdc76f |
+ && ! defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
|
|
|
bdc76f |
+# define HAVE_STRNCAT_IFUNC 1
|
|
|
bdc76f |
+#else
|
|
|
bdc76f |
+# define HAVE_STRNCAT_IFUNC 0
|
|
|
bdc76f |
+#endif
|
|
|
bdc76f |
+
|
|
|
bdc76f |
+#ifdef HAVE_S390_VX_ASM_SUPPORT
|
|
|
bdc76f |
+# define HAVE_STRNCAT_IFUNC_AND_VX_SUPPORT HAVE_STRNCAT_IFUNC
|
|
|
bdc76f |
+#else
|
|
|
bdc76f |
+# define HAVE_STRNCAT_IFUNC_AND_VX_SUPPORT 0
|
|
|
bdc76f |
+#endif
|
|
|
bdc76f |
+
|
|
|
bdc76f |
+#if defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
|
|
|
bdc76f |
+# define STRNCAT_DEFAULT STRNCAT_Z13
|
|
|
bdc76f |
+# define HAVE_STRNCAT_C 0
|
|
|
bdc76f |
+# define HAVE_STRNCAT_Z13 1
|
|
|
bdc76f |
+#else
|
|
|
bdc76f |
+# define STRNCAT_DEFAULT STRNCAT_C
|
|
|
bdc76f |
+# define HAVE_STRNCAT_C 1
|
|
|
bdc76f |
+# define HAVE_STRNCAT_Z13 HAVE_STRNCAT_IFUNC_AND_VX_SUPPORT
|
|
|
bdc76f |
+#endif
|
|
|
bdc76f |
+
|
|
|
bdc76f |
+#if HAVE_STRNCAT_C
|
|
|
bdc76f |
+# define STRNCAT_C __strncat_c
|
|
|
bdc76f |
+#else
|
|
|
bdc76f |
+# define STRNCAT_C NULL
|
|
|
bdc76f |
+#endif
|
|
|
bdc76f |
+
|
|
|
bdc76f |
+#if HAVE_STRNCAT_Z13
|
|
|
bdc76f |
+# define STRNCAT_Z13 __strncat_vx
|
|
|
bdc76f |
+#else
|
|
|
bdc76f |
+# define STRNCAT_Z13 NULL
|
|
|
bdc76f |
+#endif
|
|
|
bdc76f |
diff --git a/sysdeps/s390/multiarch/Makefile b/sysdeps/s390/multiarch/Makefile
|
|
|
bdc76f |
index 9b66237aaf9eb47e..24be3eac5131fd4a 100644
|
|
|
bdc76f |
--- a/sysdeps/s390/multiarch/Makefile
|
|
|
bdc76f |
+++ b/sysdeps/s390/multiarch/Makefile
|
|
|
bdc76f |
@@ -1,6 +1,5 @@
|
|
|
bdc76f |
ifeq ($(subdir),string)
|
|
|
bdc76f |
-sysdep_routines += strncat strncat-vx strncat-c \
|
|
|
bdc76f |
- strcmp strcmp-vx \
|
|
|
bdc76f |
+sysdep_routines += strcmp strcmp-vx \
|
|
|
bdc76f |
strncmp strncmp-vx strncmp-c \
|
|
|
bdc76f |
strchr strchr-vx strchr-c \
|
|
|
bdc76f |
strchrnul strchrnul-vx strchrnul-c \
|
|
|
bdc76f |
diff --git a/sysdeps/s390/multiarch/ifunc-impl-list.c b/sysdeps/s390/multiarch/ifunc-impl-list.c
|
|
|
bdc76f |
index 1b7f3df3a3cfe561..3abcaf08e0ccd385 100644
|
|
|
bdc76f |
--- a/sysdeps/s390/multiarch/ifunc-impl-list.c
|
|
|
bdc76f |
+++ b/sysdeps/s390/multiarch/ifunc-impl-list.c
|
|
|
bdc76f |
@@ -33,6 +33,7 @@
|
|
|
bdc76f |
#include <ifunc-strncpy.h>
|
|
|
bdc76f |
#include <ifunc-stpncpy.h>
|
|
|
bdc76f |
#include <ifunc-strcat.h>
|
|
|
bdc76f |
+#include <ifunc-strncat.h>
|
|
|
bdc76f |
|
|
|
bdc76f |
/* Maximum number of IFUNC implementations. */
|
|
|
bdc76f |
#define MAX_IFUNC 3
|
|
|
bdc76f |
@@ -255,6 +256,18 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
|
|
|
bdc76f |
)
|
|
|
bdc76f |
#endif /* HAVE_STRCAT_IFUNC */
|
|
|
bdc76f |
|
|
|
bdc76f |
+#if HAVE_STRNCAT_IFUNC
|
|
|
bdc76f |
+ IFUNC_IMPL (i, name, strncat,
|
|
|
bdc76f |
+# if HAVE_STRNCAT_Z13
|
|
|
bdc76f |
+ IFUNC_IMPL_ADD (array, i, strncat,
|
|
|
bdc76f |
+ dl_hwcap & HWCAP_S390_VX, STRNCAT_Z13)
|
|
|
bdc76f |
+# endif
|
|
|
bdc76f |
+# if HAVE_STRNCAT_C
|
|
|
bdc76f |
+ IFUNC_IMPL_ADD (array, i, strncat, 1, STRNCAT_C)
|
|
|
bdc76f |
+# endif
|
|
|
bdc76f |
+ )
|
|
|
bdc76f |
+#endif /* HAVE_STRNCAT_IFUNC */
|
|
|
bdc76f |
+
|
|
|
bdc76f |
#ifdef HAVE_S390_VX_ASM_SUPPORT
|
|
|
bdc76f |
|
|
|
bdc76f |
# define IFUNC_VX_IMPL(FUNC) \
|
|
|
bdc76f |
@@ -277,7 +290,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
|
|
|
bdc76f |
|
|
|
bdc76f |
IFUNC_VX_IMPL (wcscat);
|
|
|
bdc76f |
|
|
|
bdc76f |
- IFUNC_VX_IMPL (strncat);
|
|
|
bdc76f |
IFUNC_VX_IMPL (wcsncat);
|
|
|
bdc76f |
|
|
|
bdc76f |
IFUNC_VX_IMPL (strcmp);
|
|
|
bdc76f |
diff --git a/sysdeps/s390/multiarch/strncat-c.c b/sysdeps/s390/strncat-c.c
|
|
|
bdc76f |
similarity index 86%
|
|
|
bdc76f |
rename from sysdeps/s390/multiarch/strncat-c.c
|
|
|
bdc76f |
rename to sysdeps/s390/strncat-c.c
|
|
|
bdc76f |
index 9e6c245ccbbc2e23..86df89887c7b6293 100644
|
|
|
bdc76f |
--- a/sysdeps/s390/multiarch/strncat-c.c
|
|
|
bdc76f |
+++ b/sysdeps/s390/strncat-c.c
|
|
|
bdc76f |
@@ -16,8 +16,12 @@
|
|
|
bdc76f |
License along with the GNU C Library; if not, see
|
|
|
bdc76f |
<http://www.gnu.org/licenses/>. */
|
|
|
bdc76f |
|
|
|
bdc76f |
-#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
|
|
|
bdc76f |
-# define STRNCAT __strncat_c
|
|
|
bdc76f |
-# define STRNCAT_PRIMARY
|
|
|
bdc76f |
+#include <ifunc-strncat.h>
|
|
|
bdc76f |
+
|
|
|
bdc76f |
+#if HAVE_STRNCAT_C
|
|
|
bdc76f |
+# if HAVE_STRNCAT_IFUNC
|
|
|
bdc76f |
+# define STRNCAT STRNCAT_C
|
|
|
bdc76f |
+# define STRNCAT_PRIMARY
|
|
|
bdc76f |
+# endif
|
|
|
bdc76f |
# include <string/strncat.c>
|
|
|
bdc76f |
#endif
|
|
|
bdc76f |
diff --git a/sysdeps/s390/multiarch/strncat-vx.S b/sysdeps/s390/strncat-vx.S
|
|
|
bdc76f |
similarity index 94%
|
|
|
bdc76f |
rename from sysdeps/s390/multiarch/strncat-vx.S
|
|
|
bdc76f |
rename to sysdeps/s390/strncat-vx.S
|
|
|
bdc76f |
index e6584d0f438f0e38..76345e7dd702dd85 100644
|
|
|
bdc76f |
--- a/sysdeps/s390/multiarch/strncat-vx.S
|
|
|
bdc76f |
+++ b/sysdeps/s390/strncat-vx.S
|
|
|
bdc76f |
@@ -16,7 +16,8 @@
|
|
|
bdc76f |
License along with the GNU C Library; if not, see
|
|
|
bdc76f |
<http://www.gnu.org/licenses/>. */
|
|
|
bdc76f |
|
|
|
bdc76f |
-#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
|
|
|
bdc76f |
+#include <ifunc-strncat.h>
|
|
|
bdc76f |
+#if HAVE_STRNCAT_Z13
|
|
|
bdc76f |
|
|
|
bdc76f |
# include "sysdep.h"
|
|
|
bdc76f |
# include "asm-syntax.h"
|
|
|
bdc76f |
@@ -40,7 +41,7 @@
|
|
|
bdc76f |
-v18=part of src
|
|
|
bdc76f |
-v31=register save area for r6, r7
|
|
|
bdc76f |
*/
|
|
|
bdc76f |
-ENTRY(__strncat_vx)
|
|
|
bdc76f |
+ENTRY(STRNCAT_Z13)
|
|
|
bdc76f |
.machine "z13"
|
|
|
bdc76f |
.machinemode "zarch_nohighgprs"
|
|
|
bdc76f |
|
|
|
bdc76f |
@@ -235,5 +236,17 @@ ENTRY(__strncat_vx)
|
|
|
bdc76f |
|
|
|
bdc76f |
vl %v16,0(%r5,%r3) /* Load s. */
|
|
|
bdc76f |
j .Lcpy_lt64
|
|
|
bdc76f |
-END(__strncat_vx)
|
|
|
bdc76f |
-#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */
|
|
|
bdc76f |
+END(STRNCAT_Z13)
|
|
|
bdc76f |
+
|
|
|
bdc76f |
+# if ! HAVE_STRNCAT_IFUNC
|
|
|
bdc76f |
+strong_alias (STRNCAT_Z13, strncat)
|
|
|
bdc76f |
+# endif
|
|
|
bdc76f |
+
|
|
|
bdc76f |
+# if ! HAVE_STRNCAT_C
|
|
|
bdc76f |
+/* See string/strncat.c and define STRNCAT_PRIMARY. */
|
|
|
bdc76f |
+strong_alias (STRNCAT_Z13, __strncat)
|
|
|
bdc76f |
+# if defined SHARED && IS_IN (libc)
|
|
|
bdc76f |
+strong_alias (__strncat, __GI___strncat)
|
|
|
bdc76f |
+# endif
|
|
|
bdc76f |
+# endif
|
|
|
bdc76f |
+#endif
|
|
|
bdc76f |
diff --git a/sysdeps/s390/multiarch/strncat.c b/sysdeps/s390/strncat.c
|
|
|
bdc76f |
similarity index 69%
|
|
|
bdc76f |
rename from sysdeps/s390/multiarch/strncat.c
|
|
|
bdc76f |
rename to sysdeps/s390/strncat.c
|
|
|
bdc76f |
index 94b8dffa85420cfa..b4b3656c5ae9c535 100644
|
|
|
bdc76f |
--- a/sysdeps/s390/multiarch/strncat.c
|
|
|
bdc76f |
+++ b/sysdeps/s390/strncat.c
|
|
|
bdc76f |
@@ -16,12 +16,23 @@
|
|
|
bdc76f |
License along with the GNU C Library; if not, see
|
|
|
bdc76f |
<http://www.gnu.org/licenses/>. */
|
|
|
bdc76f |
|
|
|
bdc76f |
-#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
|
|
|
bdc76f |
+#include <ifunc-strncat.h>
|
|
|
bdc76f |
+
|
|
|
bdc76f |
+#if HAVE_STRNCAT_IFUNC
|
|
|
bdc76f |
# include <string.h>
|
|
|
bdc76f |
# include <ifunc-resolve.h>
|
|
|
bdc76f |
|
|
|
bdc76f |
-s390_vx_libc_ifunc2 (__strncat, strncat)
|
|
|
bdc76f |
+# if HAVE_STRNCAT_C
|
|
|
bdc76f |
+extern __typeof (__strncat) STRNCAT_C attribute_hidden;
|
|
|
bdc76f |
+# endif
|
|
|
bdc76f |
+
|
|
|
bdc76f |
+# if HAVE_STRNCAT_Z13
|
|
|
bdc76f |
+extern __typeof (__strncat) STRNCAT_Z13 attribute_hidden;
|
|
|
bdc76f |
+# endif
|
|
|
bdc76f |
|
|
|
bdc76f |
-#else
|
|
|
bdc76f |
-# include <string/strncat.c>
|
|
|
bdc76f |
-#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */
|
|
|
bdc76f |
+s390_libc_ifunc_expr (__strncat, strncat,
|
|
|
bdc76f |
+ (HAVE_STRNCAT_Z13 && (hwcap & HWCAP_S390_VX))
|
|
|
bdc76f |
+ ? STRNCAT_Z13
|
|
|
bdc76f |
+ : STRNCAT_DEFAULT
|
|
|
bdc76f |
+ )
|
|
|
bdc76f |
+#endif
|