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b935335155
The ifunc handling for strncat 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 strncat variants. * sysdeps/s390/Makefile (sysdep_routines): Add strncat variants. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Refactor ifunc handling for strncat. * sysdeps/s390/multiarch/strncat-c.c: Move to ... * sysdeps/s390/strncat-c.c: ... here and adjust ifunc handling. * sysdeps/s390/multiarch/strncat-vx.S: Move to ... * sysdeps/s390/strncat-vx.S: ... here and adjust ifunc handling. * sysdeps/s390/multiarch/strncat.c: Move to ... * sysdeps/s390/strncat.c: ... here and adjust ifunc handling. * sysdeps/s390/ifunc-strncat.h: New file.
39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/* Multiple versions of strncat.
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Copyright (C) 2015-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <ifunc-strncat.h>
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#if HAVE_STRNCAT_IFUNC
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# include <string.h>
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# include <ifunc-resolve.h>
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# if HAVE_STRNCAT_C
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extern __typeof (__strncat) STRNCAT_C attribute_hidden;
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# endif
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# if HAVE_STRNCAT_Z13
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extern __typeof (__strncat) STRNCAT_Z13 attribute_hidden;
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# endif
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s390_libc_ifunc_expr (__strncat, strncat,
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(HAVE_STRNCAT_Z13 && (hwcap & HWCAP_S390_VX))
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? STRNCAT_Z13
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: STRNCAT_DEFAULT
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)
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#endif
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