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| author | Stefan Liebler <stli@linux.ibm.com> | 2018-12-18 13:57:11 +0100 |
|---|---|---|
| committer | Stefan Liebler <stli@linux.ibm.com> | 2018-12-18 13:57:11 +0100 |
| commit | 970449311ded3cacb6058c96143dd4c057900589 (patch) | |
| tree | 565f010707283e91e3f4ddec367b900a374682b1 /sysdeps/s390/stpcpy.c | |
| parent | 914a4e05572e108201d71dcd3e47da8aeeecd70d (diff) | |
| download | glibc-970449311ded3cacb6058c96143dd4c057900589.tar.gz glibc-970449311ded3cacb6058c96143dd4c057900589.tar.xz glibc-970449311ded3cacb6058c96143dd4c057900589.zip | |
S390: Refactor stpcpy ifunc handling.
The ifunc handling for stpcpy is adjusted in order to omit ifunc variants if those will never be used as the minimum architecture level already supports newer CPUs by default. Glibc internal calls will then also use the "newer" ifunc variant. ChangeLog: * sysdeps/s390/multiarch/Makefile (sysdep_routines): Remove stpcpy variants. * sysdeps/s390/Makefile (sysdep_routines): Add stpcpy variants. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Refactor ifunc handling for stpcpy. * sysdeps/s390/multiarch/stpcpy-c.c: Move to ... * sysdeps/s390/stpcpy-c.c: ... here and adjust ifunc handling. * sysdeps/s390/multiarch/stpcpy-vx.S: Move to ... * sysdeps/s390/stpcpy-vx.S: ... here and adjust ifunc handling. * sysdeps/s390/multiarch/stpcpy.c: Move to ... * sysdeps/s390/stpcpy.c: ... here and adjust ifunc handling. * sysdeps/s390/ifunc-stpcpy.h: New file.
Diffstat (limited to 'sysdeps/s390/stpcpy.c')
| -rw-r--r-- | sysdeps/s390/stpcpy.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sysdeps/s390/stpcpy.c b/sysdeps/s390/stpcpy.c new file mode 100644 index 0000000000..670604e2de --- /dev/null +++ b/sysdeps/s390/stpcpy.c @@ -0,0 +1,46 @@ +/* Multiple versions of stpcpy. + Copyright (C) 2015-2018 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/>. */ + +#include <ifunc-stpcpy.h> + +#if HAVE_STPCPY_IFUNC +# define stpcpy __redirect_stpcpy +# define __stpcpy __redirect___stpcpy +/* Omit the stpcpy inline definitions because it would redefine stpcpy. */ +# define __NO_STRING_INLINES +# define NO_MEMPCPY_STPCPY_REDIRECT +# include <string.h> +# undef stpcpy +# undef __stpcpy +# include <ifunc-resolve.h> + +# if HAVE_STPCPY_C +extern __typeof (__redirect_stpcpy) STPCPY_C attribute_hidden; +# endif + +# if HAVE_STPCPY_Z13 +extern __typeof (__redirect_stpcpy) STPCPY_Z13 attribute_hidden; +# endif + +s390_libc_ifunc_expr (__redirect___stpcpy, __stpcpy, + (HAVE_STPCPY_Z13 && (hwcap & HWCAP_S390_VX)) + ? STPCPY_Z13 + : STPCPY_DEFAULT + ) +weak_alias (__stpcpy, stpcpy) +#endif |