2021-03-14 16:52:51 +00:00
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/* Optimized memmove for x86-64.
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Copyright (C) 2016-2020 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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#include "sysdep.h"
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2021-03-14 20:22:12 +00:00
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#define VEC_SIZE 16
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#define VEC(i) xmm##i
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#define PREFETCHNT prefetchnta
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#define VMOVNT movntdq
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2021-03-14 16:52:51 +00:00
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/* Use movups and movaps for smaller code sizes. */
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2021-03-14 20:22:12 +00:00
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#define VMOVU movups
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#define VMOVA movaps
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2021-03-14 16:52:51 +00:00
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2021-03-14 20:22:12 +00:00
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#define SECTION(p) p
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2021-03-14 16:52:51 +00:00
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#ifdef USE_MULTIARCH
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# if 0
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2021-03-14 20:22:12 +00:00
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# define MEMCPY_SYMBOL(p,s) memcpy
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2021-03-14 16:52:51 +00:00
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# endif
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#else
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# if defined SHARED
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2021-03-14 20:22:12 +00:00
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# define MEMCPY_SYMBOL(p,s) __memcpy
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2021-03-14 16:52:51 +00:00
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# else
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2021-03-14 20:22:12 +00:00
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# define MEMCPY_SYMBOL(p,s) memcpy
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2021-03-14 16:52:51 +00:00
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# endif
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#endif
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#if !defined USE_MULTIARCH
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2021-03-14 20:22:12 +00:00
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# define MEMPCPY_SYMBOL(p,s) __mempcpy
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2021-03-14 16:52:51 +00:00
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#endif
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#ifndef MEMMOVE_SYMBOL
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2021-03-14 20:22:12 +00:00
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# define MEMMOVE_CHK_SYMBOL(p,s) p
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# define MEMMOVE_SYMBOL(p,s) memmove
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2021-03-14 16:52:51 +00:00
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#endif
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#include "memmove-vec-unaligned-erms.S"
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#ifndef USE_MULTIARCH
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libc_hidden_builtin_def (memmove)
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# if defined SHARED && IS_IN (libc)
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strong_alias (memmove, __memcpy)
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libc_hidden_ver (memmove, memcpy)
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# endif
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libc_hidden_def (__mempcpy)
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weak_alias (__mempcpy, mempcpy)
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libc_hidden_builtin_def (mempcpy)
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# if defined SHARED && IS_IN (libc)
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# undef memcpy
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# include <shlib-compat.h>
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versioned_symbol (libc, __memcpy, memcpy, GLIBC_2_14);
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# if SHLIB_COMPAT (libc, GLIBC_2_2_5, GLIBC_2_14)
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compat_symbol (libc, memmove, memcpy, GLIBC_2_2_5);
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# endif
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# endif
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#endif
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