mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-10 07:10:06 +00:00
S390: Refactor wcschr ifunc handling.
The ifunc handling for wcschr 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. Glibc internal calls will use the "newer" ifunc variant. ChangeLog: * sysdeps/s390/multiarch/Makefile (sysdep_routines): Remove wcschr variants. * sysdeps/s390/Makefile (sysdep_routines): Add wcschr variants. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Refactor ifunc handling for wcschr. * sysdeps/s390/multiarch/wcschr-c.c: Move to ... * sysdeps/s390/wcschr-c.c: ... here and adjust ifunc handling. * sysdeps/s390/multiarch/wcschr-vx.S: Move to ... * sysdeps/s390/wcschr-vx.S: ... here and adjust ifunc handling. * sysdeps/s390/multiarch/wcschr.c: Move to ... * sysdeps/s390/wcschr.c: ... here and adjust ifunc handling. * sysdeps/s390/ifunc-wcschr.h: New file.
This commit is contained in:
Stefan Liebler
parent
e9873e1d47
commit
cf3ccc31a3
15
ChangeLog
15
ChangeLog
@ -1,3 +1,18 @@
|
||||
2018-12-18 Stefan Liebler <stli@linux.ibm.com>
|
||||
|
||||
* sysdeps/s390/multiarch/Makefile
|
||||
(sysdep_routines): Remove wcschr variants.
|
||||
* sysdeps/s390/Makefile (sysdep_routines): Add wcschr variants.
|
||||
* sysdeps/s390/multiarch/ifunc-impl-list.c
|
||||
(__libc_ifunc_impl_list): Refactor ifunc handling for wcschr.
|
||||
* sysdeps/s390/multiarch/wcschr-c.c: Move to ...
|
||||
* sysdeps/s390/wcschr-c.c: ... here and adjust ifunc handling.
|
||||
* sysdeps/s390/multiarch/wcschr-vx.S: Move to ...
|
||||
* sysdeps/s390/wcschr-vx.S: ... here and adjust ifunc handling.
|
||||
* sysdeps/s390/multiarch/wcschr.c: Move to ...
|
||||
* sysdeps/s390/wcschr.c: ... here and adjust ifunc handling.
|
||||
* sysdeps/s390/ifunc-wcschr.h: New file.
|
||||
|
||||
2018-12-18 Stefan Liebler <stli@linux.ibm.com>
|
||||
|
||||
* sysdeps/s390/multiarch/Makefile
|
||||
|
||||
@ -92,5 +92,6 @@ sysdep_routines += wcslen wcslen-vx wcslen-c \
|
||||
wcscat wcscat-vx wcscat-c \
|
||||
wcsncat wcsncat-vx wcsncat-c \
|
||||
wcscmp wcscmp-vx wcscmp-c \
|
||||
wcsncmp wcsncmp-vx wcsncmp-c
|
||||
wcsncmp wcsncmp-vx wcsncmp-c \
|
||||
wcschr wcschr-vx wcschr-c
|
||||
endif
|
||||
|
||||
53
sysdeps/s390/ifunc-wcschr.h
Normal file
53
sysdeps/s390/ifunc-wcschr.h
Normal file
@ -0,0 +1,53 @@
|
||||
/* wcschr 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_WCSCHR_IFUNC 1
|
||||
#else
|
||||
# define HAVE_WCSCHR_IFUNC 0
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_S390_VX_ASM_SUPPORT
|
||||
# define HAVE_WCSCHR_IFUNC_AND_VX_SUPPORT HAVE_WCSCHR_IFUNC
|
||||
#else
|
||||
# define HAVE_WCSCHR_IFUNC_AND_VX_SUPPORT 0
|
||||
#endif
|
||||
|
||||
#if defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
|
||||
# define WCSCHR_DEFAULT WCSCHR_Z13
|
||||
/* The z13 ifunc variant is using the common code variant as fallback! */
|
||||
# define HAVE_WCSCHR_C 1
|
||||
# define HAVE_WCSCHR_Z13 1
|
||||
#else
|
||||
# define WCSCHR_DEFAULT WCSCHR_C
|
||||
# define HAVE_WCSCHR_C 1
|
||||
# define HAVE_WCSCHR_Z13 HAVE_WCSCHR_IFUNC_AND_VX_SUPPORT
|
||||
#endif
|
||||
|
||||
#if HAVE_WCSCHR_C
|
||||
# define WCSCHR_C __wcschr_c
|
||||
#else
|
||||
# define WCSCHR_C NULL
|
||||
#endif
|
||||
|
||||
#if HAVE_WCSCHR_Z13
|
||||
# define WCSCHR_Z13 __wcschr_vx
|
||||
#else
|
||||
# define WCSCHR_Z13 NULL
|
||||
#endif
|
||||
@ -1,6 +1,5 @@
|
||||
ifeq ($(subdir),wcsmbs)
|
||||
sysdep_routines += wcschr wcschr-vx wcschr-c \
|
||||
wcschrnul wcschrnul-vx wcschrnul-c \
|
||||
sysdep_routines += wcschrnul wcschrnul-vx wcschrnul-c \
|
||||
wcsrchr wcsrchr-vx wcsrchr-c \
|
||||
wcsspn wcsspn-vx wcsspn-c \
|
||||
wcspbrk wcspbrk-vx wcspbrk-c \
|
||||
|
||||
@ -56,6 +56,7 @@
|
||||
#include <ifunc-wcsncat.h>
|
||||
#include <ifunc-wcscmp.h>
|
||||
#include <ifunc-wcsncmp.h>
|
||||
#include <ifunc-wcschr.h>
|
||||
|
||||
/* Maximum number of IFUNC implementations. */
|
||||
#define MAX_IFUNC 3
|
||||
@ -554,6 +555,18 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
|
||||
)
|
||||
#endif /* HAVE_WCSNCMP_IFUNC */
|
||||
|
||||
#if HAVE_WCSCHR_IFUNC
|
||||
IFUNC_IMPL (i, name, wcschr,
|
||||
# if HAVE_WCSCHR_Z13
|
||||
IFUNC_IMPL_ADD (array, i, wcschr,
|
||||
dl_hwcap & HWCAP_S390_VX, WCSCHR_Z13)
|
||||
# endif
|
||||
# if HAVE_WCSCHR_C
|
||||
IFUNC_IMPL_ADD (array, i, wcschr, 1, WCSCHR_C)
|
||||
# endif
|
||||
)
|
||||
#endif /* HAVE_WCSCHR_IFUNC */
|
||||
|
||||
#ifdef HAVE_S390_VX_ASM_SUPPORT
|
||||
|
||||
# define IFUNC_VX_IMPL(FUNC) \
|
||||
@ -562,8 +575,6 @@ __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 (wcschr);
|
||||
|
||||
IFUNC_VX_IMPL (wcschrnul);
|
||||
|
||||
IFUNC_VX_IMPL (wcsrchr);
|
||||
|
||||
@ -16,22 +16,29 @@
|
||||
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 WCSCHR __wcschr_c
|
||||
#include <ifunc-wcschr.h>
|
||||
|
||||
#if HAVE_WCSCHR_C
|
||||
# if HAVE_WCSCHR_IFUNC || HAVE_WCSCHR_Z13
|
||||
# define WCSCHR WCSCHR_C
|
||||
|
||||
# include <wchar.h>
|
||||
extern __typeof (__wcschr) __wcschr_c;
|
||||
# undef weak_alias
|
||||
# define weak_alias(name, alias)
|
||||
# ifdef SHARED
|
||||
# undef libc_hidden_def
|
||||
# define libc_hidden_def(name) \
|
||||
__hidden_ver1 (__wcschr_c, __GI_wcschr, __wcschr_c); \
|
||||
strong_alias (__wcschr_c, __wcschr_c_1); \
|
||||
__hidden_ver1 (__wcschr_c_1, __GI___wcschr, __wcschr_c_1);
|
||||
|
||||
# if defined SHARED && IS_IN (libc)
|
||||
# undef libc_hidden_weak
|
||||
# define libc_hidden_weak(name)
|
||||
# endif /* SHARED */
|
||||
# undef libc_hidden_def
|
||||
# if ! defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
|
||||
# define libc_hidden_def(name) \
|
||||
__hidden_ver1 (__wcschr_c, __GI_wcschr, __wcschr_c) __attribute__((weak)); \
|
||||
strong_alias (__wcschr_c, __wcschr_c_1); \
|
||||
__hidden_ver1 (__wcschr_c_1, __GI___wcschr, __wcschr_c_1);
|
||||
# else
|
||||
# define libc_hidden_def(name)
|
||||
# endif
|
||||
# endif
|
||||
# endif
|
||||
|
||||
# include <wcsmbs/wcschr.c>
|
||||
#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */
|
||||
#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-wcschr.h>
|
||||
#if HAVE_WCSCHR_Z13
|
||||
|
||||
# include "sysdep.h"
|
||||
# include "asm-syntax.h"
|
||||
@ -36,7 +37,7 @@
|
||||
-v17=index of unequal
|
||||
-v18=replicated c
|
||||
*/
|
||||
ENTRY(__wcschr_vx)
|
||||
ENTRY(WCSCHR_Z13)
|
||||
.machine "z13"
|
||||
.machinemode "zarch_nohighgprs"
|
||||
|
||||
@ -98,6 +99,17 @@ ENTRY(__wcschr_vx)
|
||||
lghi %r2,0 /* Return null if character not found. */
|
||||
br %r14
|
||||
.Lfallback:
|
||||
jg __wcschr_c
|
||||
END(__wcschr_vx)
|
||||
#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */
|
||||
jg WCSCHR_C
|
||||
END(WCSCHR_Z13)
|
||||
|
||||
# if ! HAVE_WCSCHR_IFUNC
|
||||
strong_alias (WCSCHR_Z13, __wcschr)
|
||||
weak_alias (__wcschr, wcschr)
|
||||
# endif
|
||||
|
||||
# if defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT \
|
||||
&& defined SHARED && IS_IN (libc)
|
||||
strong_alias (WCSCHR_Z13, __GI___wcschr)
|
||||
weak_alias (WCSCHR_Z13, __GI_wcschr)
|
||||
# endif
|
||||
#endif
|
||||
@ -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-wcschr.h>
|
||||
|
||||
#if HAVE_WCSCHR_IFUNC
|
||||
# define wcschr __redirect_wcschr
|
||||
# define __wcschr __redirect___wcschr
|
||||
# include <wchar.h>
|
||||
@ -24,9 +26,18 @@
|
||||
# undef __wcschr
|
||||
# include <ifunc-resolve.h>
|
||||
|
||||
s390_vx_libc_ifunc_redirected (__redirect___wcschr, __wcschr)
|
||||
weak_alias (__wcschr, wcschr)
|
||||
# if HAVE_WCSCHR_C
|
||||
extern __typeof (__redirect___wcschr) WCSCHR_C attribute_hidden;
|
||||
# endif
|
||||
|
||||
#else
|
||||
# include <wcsmbs/wcschr.c>
|
||||
#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */
|
||||
# if HAVE_WCSCHR_Z13
|
||||
extern __typeof (__redirect___wcschr) WCSCHR_Z13 attribute_hidden;
|
||||
# endif
|
||||
|
||||
s390_libc_ifunc_expr (__redirect___wcschr, __wcschr,
|
||||
(HAVE_WCSCHR_Z13 && (hwcap & HWCAP_S390_VX))
|
||||
? WCSCHR_Z13
|
||||
: WCSCHR_DEFAULT
|
||||
)
|
||||
weak_alias (__wcschr, wcschr)
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user