| 1 | /* Optimized memmove for x86-64. |
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| 2 | Copyright (C) 2016-2024 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | |
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| 20 | #ifdef USE_MULTIARCH |
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| 21 | # if !IS_IN (libc) |
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| 22 | # define MEMCPY_SYMBOL(p,s) memcpy |
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| 23 | # endif |
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| 24 | #else |
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| 25 | # if defined SHARED && IS_IN (libc) |
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| 26 | # define MEMCPY_SYMBOL(p,s) __memcpy |
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| 27 | # else |
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| 28 | # define MEMCPY_SYMBOL(p,s) memcpy |
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| 29 | # endif |
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| 30 | #endif |
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| 31 | #if !defined USE_MULTIARCH || !IS_IN (libc) |
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| 32 | # define MEMPCPY_SYMBOL(p,s) __mempcpy |
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| 33 | #endif |
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| 34 | |
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| 35 | #define MEMMOVE_CHK_SYMBOL(p,s) p |
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| 36 | #define MEMMOVE_SYMBOL(p,s) memmove |
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| 37 | |
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| 38 | |
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| 39 | #define DEFAULT_IMPL_V1 "multiarch/memmove-sse2-unaligned-erms.S" |
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| 40 | #define DEFAULT_IMPL_V3 "multiarch/memmove-avx-unaligned-erms.S" |
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| 41 | #define DEFAULT_IMPL_V4 "multiarch/memmove-evex-unaligned-erms.S" |
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| 42 | |
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| 43 | #include "isa-default-impl.h" |
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| 44 | |
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| 45 | weak_alias (__mempcpy, mempcpy) |
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| 46 | |
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| 47 | #ifndef USE_MULTIARCH |
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| 48 | libc_hidden_builtin_def (memmove) |
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| 49 | libc_hidden_builtin_def (__memmove_chk) |
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| 50 | libc_hidden_builtin_def (__memcpy_chk) |
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| 51 | libc_hidden_builtin_def (__mempcpy_chk) |
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| 52 | # if defined SHARED && IS_IN (libc) |
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| 53 | strong_alias (memmove, __memcpy) |
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| 54 | libc_hidden_ver (memmove, memcpy) |
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| 55 | # endif |
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| 56 | libc_hidden_def (__mempcpy) |
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| 57 | weak_alias (__mempcpy, mempcpy) |
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| 58 | libc_hidden_builtin_def (mempcpy) |
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| 59 | |
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| 60 | |
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| 61 | # if defined SHARED && IS_IN (libc) |
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| 62 | # undef memcpy |
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| 63 | # include <shlib-compat.h> |
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| 64 | versioned_symbol (libc, __memcpy, memcpy, GLIBC_2_14); |
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| 65 | # endif |
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| 66 | #endif |
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| 67 | |
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