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e4ca6de1bc
We use PPC_FEATURE_HAS_VSX to select a number of POWER7 optimised functions. These functions don't use any VSX instructions, so PPC_FEATURE_ARCH_2_06 seems like a better fit. Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
63 lines
2.3 KiB
C
63 lines
2.3 KiB
C
/* Multiple versions of memset.
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Copyright (C) 2013-2021 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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<https://www.gnu.org/licenses/>. */
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/* Define multiple versions only for definition in libc. */
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#if defined SHARED && IS_IN (libc)
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/* Redefine memset so that the compiler won't complain about the type
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mismatch with the IFUNC selector in strong_alias, below. */
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# undef memset
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# define memset __redirect_memset
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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 (__redirect_memset) __libc_memset;
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extern __typeof (__redirect_memset) __memset_ppc attribute_hidden;
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extern __typeof (__redirect_memset) __memset_power4 attribute_hidden;
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extern __typeof (__redirect_memset) __memset_power6 attribute_hidden;
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extern __typeof (__redirect_memset) __memset_power7 attribute_hidden;
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extern __typeof (__redirect_memset) __memset_power8 attribute_hidden;
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# ifdef __LITTLE_ENDIAN__
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extern __typeof (__redirect_memset) __memset_power10 attribute_hidden;
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# endif
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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 (__libc_memset,
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# ifdef __LITTLE_ENDIAN__
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(hwcap2 & PPC_FEATURE2_ARCH_3_1
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&& hwcap2 & PPC_FEATURE2_HAS_ISEL
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&& hwcap & PPC_FEATURE_HAS_VSX)
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? __memset_power10 :
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# endif
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(hwcap2 & PPC_FEATURE2_ARCH_2_07)
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? __memset_power8 :
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(hwcap & PPC_FEATURE_ARCH_2_06)
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? __memset_power7 :
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(hwcap & PPC_FEATURE_ARCH_2_05)
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? __memset_power6 :
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(hwcap & PPC_FEATURE_POWER4)
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? __memset_power4
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: __memset_ppc);
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#undef memset
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strong_alias (__libc_memset, memset);
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libc_hidden_ver (__libc_memset, memset);
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#endif
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