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| author | Steve Ellcey <sellcey@caviumnetworks.com> | 2017-05-24 16:46:48 -0700 |
|---|---|---|
| committer | Steve Ellcey <sellcey@caviumnetworks.com> | 2017-05-24 16:46:48 -0700 |
| commit | 6a2c695266fab34cc057256d1b33d2268183f00e (patch) | |
| tree | 320796a70561a5459b120bc2f99b4398dcc4970f /sysdeps/aarch64/multiarch/memcpy.c | |
| parent | 6edbe546d6ac243a5e3c2610853f2da53f0507b4 (diff) | |
| download | glibc-6a2c695266fab34cc057256d1b33d2268183f00e.zip glibc-6a2c695266fab34cc057256d1b33d2268183f00e.tar.gz glibc-6a2c695266fab34cc057256d1b33d2268183f00e.tar.bz2 | |
aarch64: Thunderx specific memcpy and memmove
* sysdeps/aarch64/memcpy.S (MEMMOVE, MEMCPY): New macros.
(memmove): Use MEMMOVE for name.
(memcpy): Use MEMCPY for name. Change internal labels
to external labels.
* sysdeps/aarch64/multiarch/Makefile: New file.
* sysdeps/aarch64/multiarch/ifunc-impl-list.c: Likewise.
* sysdeps/aarch64/multiarch/init-arch.h: Likewise.
* sysdeps/aarch64/multiarch/memcpy.c: Likewise.
* sysdeps/aarch64/multiarch/memcpy_generic.S: Likewise.
* sysdeps/aarch64/multiarch/memcpy_thunderx.S: Likewise.
* sysdeps/aarch64/multiarch/memmove.c: Likewise.
Diffstat (limited to 'sysdeps/aarch64/multiarch/memcpy.c')
| -rw-r--r-- | sysdeps/aarch64/multiarch/memcpy.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/sysdeps/aarch64/multiarch/memcpy.c b/sysdeps/aarch64/multiarch/memcpy.c new file mode 100644 index 0000000..9f73efb --- /dev/null +++ b/sysdeps/aarch64/multiarch/memcpy.c @@ -0,0 +1,39 @@ +/* Multiple versions of memcpy. AARCH64 version. + Copyright (C) 2017 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; + +libc_ifunc (__libc_memcpy, + IS_THUNDERX (midr) ? __memcpy_thunderx : __memcpy_generic); + +# undef memcpy +strong_alias (__libc_memcpy, memcpy); +#endif |