mirror of
https://sourceware.org/git/glibc.git
synced 2024-09-20 00:19:57 +00:00
S390: Refactor wcsncat ifunc handling.
The ifunc handling for wcsncat is adjusted in order to omit ifunc if the minimum architecture level already supports newer CPUs by default. Unfortunately the c ifunc variant can't be omitted at all as it is used by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned. ChangeLog: * sysdeps/s390/multiarch/Makefile (sysdep_routines): Remove wcsncat variants. * sysdeps/s390/Makefile (sysdep_routines): Add wcsncat variants. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Refactor ifunc handling for wcsncat. * sysdeps/s390/multiarch/wcsncat-c.c: Move to ... * sysdeps/s390/wcsncat-c.c: ... here and adjust ifunc handling. * sysdeps/s390/multiarch/wcsncat-vx.S: Move to ... * sysdeps/s390/wcsncat-vx.S: ... here and adjust ifunc handling. * sysdeps/s390/multiarch/wcsncat.c: Move to ... * sysdeps/s390/wcsncat.c: ... here and adjust ifunc handling. * sysdeps/s390/ifunc-wcsncat.h: New file.
This commit is contained in:
Stefan Liebler
parent
3389cae427
commit
814a76e1bc
15
ChangeLog
15
ChangeLog
@ -1,3 +1,18 @@
|
||||
2018-12-18 Stefan Liebler <stli@linux.ibm.com>
|
||||
|
||||
* sysdeps/s390/multiarch/Makefile
|
||||
(sysdep_routines): Remove wcsncat variants.
|
||||
* sysdeps/s390/Makefile (sysdep_routines): Add wcsncat variants.
|
||||
* sysdeps/s390/multiarch/ifunc-impl-list.c
|
||||
(__libc_ifunc_impl_list): Refactor ifunc handling for wcsncat.
|
||||
* sysdeps/s390/multiarch/wcsncat-c.c: Move to ...
|
||||
* sysdeps/s390/wcsncat-c.c: ... here and adjust ifunc handling.
|
||||
* sysdeps/s390/multiarch/wcsncat-vx.S: Move to ...
|
||||
* sysdeps/s390/wcsncat-vx.S: ... here and adjust ifunc handling.
|
||||
* sysdeps/s390/multiarch/wcsncat.c: Move to ...
|
||||
* sysdeps/s390/wcsncat.c: ... here and adjust ifunc handling.
|
||||
* sysdeps/s390/ifunc-wcsncat.h: New file.
|
||||
|
||||
2018-12-18 Stefan Liebler <stli@linux.ibm.com>
|
||||
|
||||
* sysdeps/s390/multiarch/Makefile
|
||||
|
||||
@ -89,5 +89,6 @@ sysdep_routines += wcslen wcslen-vx wcslen-c \
|
||||
wcpcpy wcpcpy-vx wcpcpy-c \
|
||||
wcsncpy wcsncpy-vx wcsncpy-c \
|
||||
wcpncpy wcpncpy-vx wcpncpy-c \
|
||||
wcscat wcscat-vx wcscat-c
|
||||
wcscat wcscat-vx wcscat-c \
|
||||
wcsncat wcsncat-vx wcsncat-c
|
||||
endif
|
||||
|
||||
53
sysdeps/s390/ifunc-wcsncat.h
Normal file
53
sysdeps/s390/ifunc-wcsncat.h
Normal file
@ -0,0 +1,53 @@
|
||||
/* wcsncat 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_WCSNCAT_IFUNC 1
|
||||
#else
|
||||
# define HAVE_WCSNCAT_IFUNC 0
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_S390_VX_ASM_SUPPORT
|
||||
# define HAVE_WCSNCAT_IFUNC_AND_VX_SUPPORT HAVE_WCSNCAT_IFUNC
|
||||
#else
|
||||
# define HAVE_WCSNCAT_IFUNC_AND_VX_SUPPORT 0
|
||||
#endif
|
||||
|
||||
#if defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
|
||||
# define WCSNCAT_DEFAULT WCSNCAT_Z13
|
||||
/* The z13 ifunc variant is using the common code variant as fallback! */
|
||||
# define HAVE_WCSNCAT_C 1
|
||||
# define HAVE_WCSNCAT_Z13 1
|
||||
#else
|
||||
# define WCSNCAT_DEFAULT WCSNCAT_C
|
||||
# define HAVE_WCSNCAT_C 1
|
||||
# define HAVE_WCSNCAT_Z13 HAVE_WCSNCAT_IFUNC_AND_VX_SUPPORT
|
||||
#endif
|
||||
|
||||
#if HAVE_WCSNCAT_C
|
||||
# define WCSNCAT_C __wcsncat_c
|
||||
#else
|
||||
# define WCSNCAT_C NULL
|
||||
#endif
|
||||
|
||||
#if HAVE_WCSNCAT_Z13
|
||||
# define WCSNCAT_Z13 __wcsncat_vx
|
||||
#else
|
||||
# define WCSNCAT_Z13 NULL
|
||||
#endif
|
||||
@ -1,6 +1,5 @@
|
||||
ifeq ($(subdir),wcsmbs)
|
||||
sysdep_routines += wcsncat wcsncat-vx wcsncat-c \
|
||||
wcscmp wcscmp-vx wcscmp-c \
|
||||
sysdep_routines += wcscmp wcscmp-vx wcscmp-c \
|
||||
wcsncmp wcsncmp-vx wcsncmp-c \
|
||||
wcschr wcschr-vx wcschr-c \
|
||||
wcschrnul wcschrnul-vx wcschrnul-c \
|
||||
|
||||
@ -53,6 +53,7 @@
|
||||
#include <ifunc-wcsncpy.h>
|
||||
#include <ifunc-wcpncpy.h>
|
||||
#include <ifunc-wcscat.h>
|
||||
#include <ifunc-wcsncat.h>
|
||||
|
||||
/* Maximum number of IFUNC implementations. */
|
||||
#define MAX_IFUNC 3
|
||||
@ -515,6 +516,18 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
|
||||
)
|
||||
#endif /* HAVE_WCSCAT_IFUNC */
|
||||
|
||||
#if HAVE_WCSNCAT_IFUNC
|
||||
IFUNC_IMPL (i, name, wcsncat,
|
||||
# if HAVE_WCSNCAT_Z13
|
||||
IFUNC_IMPL_ADD (array, i, wcsncat,
|
||||
dl_hwcap & HWCAP_S390_VX, WCSNCAT_Z13)
|
||||
# endif
|
||||
# if HAVE_WCSNCAT_C
|
||||
IFUNC_IMPL_ADD (array, i, wcsncat, 1, WCSNCAT_C)
|
||||
# endif
|
||||
)
|
||||
#endif /* HAVE_WCSNCAT_IFUNC */
|
||||
|
||||
#ifdef HAVE_S390_VX_ASM_SUPPORT
|
||||
|
||||
# define IFUNC_VX_IMPL(FUNC) \
|
||||
@ -523,8 +536,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
|
||||
__##FUNC##_vx) \
|
||||
IFUNC_IMPL_ADD (array, i, FUNC, 1, __##FUNC##_c))
|
||||
|
||||
IFUNC_VX_IMPL (wcsncat);
|
||||
|
||||
IFUNC_VX_IMPL (wcscmp);
|
||||
|
||||
IFUNC_VX_IMPL (wcsncmp);
|
||||
|
||||
@ -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 WCSNCAT __wcsncat_c
|
||||
#include <ifunc-wcsncat.h>
|
||||
|
||||
#if HAVE_WCSNCAT_C
|
||||
# if HAVE_WCSNCAT_IFUNC || HAVE_WCSNCAT_Z13
|
||||
# define WCSNCAT WCSNCAT_C
|
||||
# endif
|
||||
|
||||
# include <wchar.h>
|
||||
extern __typeof (wcsncat) __wcsncat_c;
|
||||
# include <wcsmbs/wcsncat.c>
|
||||
#endif
|
||||
@ -16,7 +16,8 @@
|
||||
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-wcsncat.h>
|
||||
#if HAVE_WCSNCAT_Z13
|
||||
|
||||
# include "sysdep.h"
|
||||
# include "asm-syntax.h"
|
||||
@ -40,7 +41,7 @@
|
||||
-v18=part of src
|
||||
-v31=register save area for r6, r7
|
||||
*/
|
||||
ENTRY(__wcsncat_vx)
|
||||
ENTRY(WCSNCAT_Z13)
|
||||
.machine "z13"
|
||||
.machinemode "zarch_nohighgprs"
|
||||
|
||||
@ -260,6 +261,10 @@ ENTRY(__wcsncat_vx)
|
||||
j .Lcpy_lt64
|
||||
|
||||
.Lfallback:
|
||||
jg __wcsncat_c
|
||||
END(__wcsncat_vx)
|
||||
#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */
|
||||
jg WCSNCAT_C
|
||||
END(WCSNCAT_Z13)
|
||||
|
||||
# if ! HAVE_WCSNCAT_IFUNC
|
||||
strong_alias (WCSNCAT_Z13, wcsncat)
|
||||
# endif
|
||||
#endif
|
||||
@ -16,12 +16,23 @@
|
||||
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-wcsncat.h>
|
||||
|
||||
#if HAVE_WCSNCAT_IFUNC
|
||||
# include <wchar.h>
|
||||
# include <ifunc-resolve.h>
|
||||
|
||||
s390_vx_libc_ifunc2 (__wcsncat, wcsncat)
|
||||
# if HAVE_WCSNCAT_C
|
||||
extern __typeof (wcsncat) WCSNCAT_C attribute_hidden;
|
||||
# endif
|
||||
|
||||
#else
|
||||
# include <wcsmbs/wcsncat.c>
|
||||
#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */
|
||||
# if HAVE_WCSNCAT_Z13
|
||||
extern __typeof (wcsncat) WCSNCAT_Z13 attribute_hidden;
|
||||
# endif
|
||||
|
||||
s390_libc_ifunc_expr (wcsncat, wcsncat,
|
||||
(HAVE_WCSNCAT_Z13 && (hwcap & HWCAP_S390_VX))
|
||||
? WCSNCAT_Z13
|
||||
: WCSNCAT_DEFAULT
|
||||
)
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user