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69 lines
2.6 KiB
C
69 lines
2.6 KiB
C
/* Multiple versions of memcpy. PowerPC64 version.
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Copyright (C) 2013-2023 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 the definition in lib and for
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DSO. In static binaries we need memcpy before the initialization
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happened. */
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#if defined SHARED && IS_IN (libc)
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/* Redefine memcpy 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 memcpy
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# define memcpy __redirect_memcpy
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# include <string.h>
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# include "init-arch.h"
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extern __typeof (__redirect_memcpy) __libc_memcpy;
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extern __typeof (__redirect_memcpy) __memcpy_ppc attribute_hidden;
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extern __typeof (__redirect_memcpy) __memcpy_power4 attribute_hidden;
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extern __typeof (__redirect_memcpy) __memcpy_cell attribute_hidden;
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extern __typeof (__redirect_memcpy) __memcpy_power6 attribute_hidden;
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extern __typeof (__redirect_memcpy) __memcpy_a2 attribute_hidden;
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extern __typeof (__redirect_memcpy) __memcpy_power7 attribute_hidden;
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extern __typeof (__redirect_memcpy) __memcpy_power8_cached attribute_hidden;
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# if defined __LITTLE_ENDIAN__
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extern __typeof (__redirect_memcpy) __memcpy_power10 attribute_hidden;
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# endif
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libc_ifunc (__libc_memcpy,
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# if defined __LITTLE_ENDIAN__
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(hwcap2 & PPC_FEATURE2_ARCH_3_1 && hwcap & PPC_FEATURE_HAS_VSX)
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? __memcpy_power10 :
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# endif
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(hwcap2 & PPC_FEATURE2_ARCH_2_07
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&& hwcap & PPC_FEATURE_HAS_ALTIVEC
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&& use_cached_memopt)
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? __memcpy_power8_cached :
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(hwcap & PPC_FEATURE_ARCH_2_06
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&& hwcap & PPC_FEATURE_HAS_ALTIVEC)
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? __memcpy_power7 :
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(hwcap & PPC_FEATURE_ARCH_2_06)
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? __memcpy_a2 :
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(hwcap & PPC_FEATURE_ARCH_2_05)
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? __memcpy_power6 :
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(hwcap & PPC_FEATURE_CELL_BE)
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? __memcpy_cell :
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(hwcap & PPC_FEATURE_POWER4)
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? __memcpy_power4
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: __memcpy_ppc);
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#undef memcpy
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strong_alias (__libc_memcpy, memcpy);
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libc_hidden_ver (__libc_memcpy, memcpy);
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#endif
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