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5a90716891
Recent commit 59ba2d2b54 missed to add __memrchr_power8 in
ifunc list. Also handled discarding unwanted bytes for
unaligned inputs in power8 optimization.
2017-10-05 Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
* sysdeps/powerpc/powerpc64/multiarch/memrchr-ppc64.c: Revert
back to powerpc32 file.
* sysdeps/powerpc/powerpc64/multiarch/memrchr.c
(memrchr): Add __memrchr_power8 to ifunc list.
* sysdeps/powerpc/powerpc64/power8/memrchr.S: Mask
extra bytes for unaligned inputs.
41 lines
1.4 KiB
C
41 lines
1.4 KiB
C
/* Multiple versions of memrchr.
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Copyright (C) 2013-2017 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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#if IS_IN (libc)
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# include <string.h>
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# include <shlib-compat.h>
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# include "init-arch.h"
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extern __typeof (__memrchr) __memrchr_ppc attribute_hidden;
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extern __typeof (__memrchr) __memrchr_power7 attribute_hidden;
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extern __typeof (__memrchr) __memrchr_power8 attribute_hidden;
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/* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
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ifunc symbol properly. */
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libc_ifunc (__memrchr,
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(hwcap2 & PPC_FEATURE2_ARCH_2_07)
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? __memrchr_power8 :
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(hwcap & PPC_FEATURE_HAS_VSX)
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? __memrchr_power7
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: __memrchr_ppc);
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weak_alias (__memrchr, memrchr)
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#else
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#include <string/memrchr.c>
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#endif
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