| 1 | /* Multiple versions of memchr. AARCH64 version. |
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| 2 | Copyright (C) 2018-2022 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 | /* Define multiple versions only for the definition in libc. */ |
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| 20 | |
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| 21 | #if IS_IN (libc) |
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| 22 | /* Redefine memchr so that the compiler won't complain about the type |
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| 23 | mismatch with the IFUNC selector in strong_alias, below. */ |
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| 24 | # undef memchr |
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| 25 | # define memchr __redirect_memchr |
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| 26 | # include <string.h> |
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| 27 | # include <init-arch.h> |
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| 28 | |
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| 29 | extern __typeof (__redirect_memchr) __memchr; |
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| 30 | |
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| 31 | extern __typeof (__redirect_memchr) __memchr_generic attribute_hidden; |
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| 32 | extern __typeof (__redirect_memchr) __memchr_nosimd attribute_hidden; |
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| 33 | |
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| 34 | libc_ifunc (__memchr, |
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| 35 | ((IS_EMAG (midr) |
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| 36 | ? __memchr_nosimd |
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| 37 | : __memchr_generic))); |
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| 38 | |
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| 39 | # undef memchr |
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| 40 | strong_alias (__memchr, memchr); |
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| 41 | #endif |
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| 42 | |
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