diff options
Diffstat (limited to 'sysdeps/aarch64/multiarch/memcpy.c')
| -rw-r--r-- | sysdeps/aarch64/multiarch/memcpy.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/sysdeps/aarch64/multiarch/memcpy.c b/sysdeps/aarch64/multiarch/memcpy.c new file mode 100644 index 0000000000..4a04a63b0f --- /dev/null +++ b/sysdeps/aarch64/multiarch/memcpy.c @@ -0,0 +1,47 @@ +/* Multiple versions of memcpy. AARCH64 version. + Copyright (C) 2017-2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +/* Define multiple versions only for the definition in libc. */ + +#if IS_IN (libc) +/* Redefine memcpy so that the compiler won't complain about the type + mismatch with the IFUNC selector in strong_alias, below. */ +# undef memcpy +# define memcpy __redirect_memcpy +# include <string.h> +# include <init-arch.h> + +extern __typeof (__redirect_memcpy) __libc_memcpy; + +extern __typeof (__redirect_memcpy) __memcpy_generic attribute_hidden; +extern __typeof (__redirect_memcpy) __memcpy_thunderx attribute_hidden; +extern __typeof (__redirect_memcpy) __memcpy_thunderx2 attribute_hidden; +extern __typeof (__redirect_memcpy) __memcpy_falkor attribute_hidden; + +libc_ifunc (__libc_memcpy, + (IS_THUNDERX (midr) + ? __memcpy_thunderx + : (IS_FALKOR (midr) || IS_PHECDA (midr) + ? __memcpy_falkor + : (IS_THUNDERX2 (midr) || IS_THUNDERX2PA (midr) + ? __memcpy_thunderx2 + : __memcpy_generic)))); + +# undef memcpy +strong_alias (__libc_memcpy, memcpy); +#endif |