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| author | Stefan Liebler <stli@linux.ibm.com> | 2018-12-18 13:57:12 +0100 |
|---|---|---|
| committer | Stefan Liebler <stli@linux.ibm.com> | 2018-12-18 13:57:12 +0100 |
| commit | 8e5a0afbbf0a96fb873e27aa064c9bacc9cfd9c6 (patch) | |
| tree | dfaa0b38359217a4a4902f9241585260a70ce55f /sysdeps/s390/ifunc-strcat.h | |
| parent | 25218822bdbfb49b8ea0f419e8a20d2b9bd47cd0 (diff) | |
| download | glibc-8e5a0afbbf0a96fb873e27aa064c9bacc9cfd9c6.tar.gz glibc-8e5a0afbbf0a96fb873e27aa064c9bacc9cfd9c6.tar.xz glibc-8e5a0afbbf0a96fb873e27aa064c9bacc9cfd9c6.zip | |
S390: Refactor strcat ifunc handling.
The ifunc handling for strcat 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 strcat variants. * sysdeps/s390/Makefile (sysdep_routines): Add strcat variants. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Refactor ifunc handling for strcat. * sysdeps/s390/multiarch/strcat-c.c: Move to ... * sysdeps/s390/strcat-c.c: ... here and adjust ifunc handling. * sysdeps/s390/multiarch/strcat-vx.S: Move to ... * sysdeps/s390/strcat-vx.S: ... here and adjust ifunc handling. * sysdeps/s390/multiarch/strcat.c: Move to ... * sysdeps/s390/strcat.c: ... here and adjust ifunc handling. * sysdeps/s390/ifunc-strcat.h: New file.
Diffstat (limited to 'sysdeps/s390/ifunc-strcat.h')
| -rw-r--r-- | sysdeps/s390/ifunc-strcat.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/sysdeps/s390/ifunc-strcat.h b/sysdeps/s390/ifunc-strcat.h new file mode 100644 index 0000000000..6fd2f7dd31 --- /dev/null +++ b/sysdeps/s390/ifunc-strcat.h @@ -0,0 +1,52 @@ +/* strcat 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_STRCAT_IFUNC 1 +#else +# define HAVE_STRCAT_IFUNC 0 +#endif + +#ifdef HAVE_S390_VX_ASM_SUPPORT +# define HAVE_STRCAT_IFUNC_AND_VX_SUPPORT HAVE_STRCAT_IFUNC +#else +# define HAVE_STRCAT_IFUNC_AND_VX_SUPPORT 0 +#endif + +#if defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT +# define STRCAT_DEFAULT STRCAT_Z13 +# define HAVE_STRCAT_C 0 +# define HAVE_STRCAT_Z13 1 +#else +# define STRCAT_DEFAULT STRCAT_C +# define HAVE_STRCAT_C 1 +# define HAVE_STRCAT_Z13 HAVE_STRCAT_IFUNC_AND_VX_SUPPORT +#endif + +#if HAVE_STRCAT_C +# define STRCAT_C __strcat_c +#else +# define STRCAT_C NULL +#endif + +#if HAVE_STRCAT_Z13 +# define STRCAT_Z13 __strcat_vx +#else +# define STRCAT_Z13 NULL +#endif |