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18eb862d45
This patch moves all ifunc variants for memcpy/mempcpy to sysdeps/s390/memcpy-z900.S. The configure-check/preprocessor logic in sysdeps/s390/ifunc-memcpy.h decides if ifunc is needed at all and which ifunc variants should be available. E.g. if the compiler/assembler already supports z196 by default, the older ifunc variants are not included. If we only need the newest ifunc variant, then we can skip ifunc at all. Therefore the ifunc-resolvers and __libc_ifunc_impl_list are adjusted in order to handle only the available ifunc variants. ChangeLog: * sysdeps/s390/ifunc-memcpy.h: New File. * sysdeps/s390/memcpy.S: Move to ... * sysdeps/s390/memcpy-z900.S ... here. Move implementations from memcpy-s390x.s to here. * sysdeps/s390/multiarch/memcpy-s390x.S: Delete File. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Remove memcpy/mempcpy variants. * sysdeps/s390/Makefile (sysdep_routines): Add memcpy/mempcpy variants. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Adjust ifunc variants for memcpy and mempcpy. * sysdeps/s390/multiarch/memcpy.c: Move ifunc resolver to ... * sysdeps/s390/memcpy.c: ... here. Adjust ifunc variants for memcpy. * sysdeps/s390/multiarch/mempcpy.c: Move to ... * sysdeps/s390/mempcpy.c: ... here. Adjust ifunc variants for mempcpy. * sysdeps/s390/mempcpy.S: Delete file.
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
/* Multiple versions of memcpy.
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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-memcpy.h>
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#if HAVE_MEMCPY_IFUNC
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# define memcpy __redirect_memcpy
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# include <string.h>
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# undef memcpy
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# include <ifunc-resolve.h>
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# if HAVE_MEMCPY_Z900_G5
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extern __typeof (__redirect_memcpy) MEMCPY_Z900_G5 attribute_hidden;
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# endif
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# if HAVE_MEMCPY_Z10
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extern __typeof (__redirect_memcpy) MEMCPY_Z10 attribute_hidden;
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# endif
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# if HAVE_MEMCPY_Z196
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extern __typeof (__redirect_memcpy) MEMCPY_Z196 attribute_hidden;
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# endif
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s390_libc_ifunc_expr (__redirect_memcpy, memcpy,
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({
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s390_libc_ifunc_init ();
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(HAVE_MEMCPY_Z196 && S390_IS_Z196 (stfle_bits))
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? MEMCPY_Z196
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: (HAVE_MEMCPY_Z10 && S390_IS_Z10 (stfle_bits))
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? MEMCPY_Z10
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: MEMCPY_DEFAULT;
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})
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)
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#endif
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