mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-04 19:00:09 +00:00
17a73a6d8b
The hwcap2 check for the aforementioned functions should check for both PPC_FEATURE2_ARCH_3_1 and PPC_FEATURE2_HAS_ISEL but was mistakenly checking for any one of them, enabling isa 3.1 version of the functions in incompatible processors, like POWER8. Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
54 lines
1.9 KiB
C
54 lines
1.9 KiB
C
/* Multiple versions of memmove. PowerPC64 version.
|
|
Copyright (C) 2014-2021 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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
/* Define multiple versions only for the definition in lib and for
|
|
DSO. In static binaries we need memmove before the initialization
|
|
happened. */
|
|
#if defined SHARED && IS_IN (libc)
|
|
/* Redefine memmove so that the compiler won't complain about the type
|
|
mismatch with the IFUNC selector in strong_alias, below. */
|
|
# undef memmove
|
|
# define memmove __redirect_memmove
|
|
# include <string.h>
|
|
# include "init-arch.h"
|
|
|
|
extern __typeof (__redirect_memmove) __libc_memmove;
|
|
extern __typeof (__redirect_memmove) __memmove_ppc attribute_hidden;
|
|
extern __typeof (__redirect_memmove) __memmove_power7 attribute_hidden;
|
|
#ifdef __LITTLE_ENDIAN__
|
|
extern __typeof (__redirect_memmove) __memmove_power10 attribute_hidden;
|
|
#endif
|
|
|
|
libc_ifunc (__libc_memmove,
|
|
#ifdef __LITTLE_ENDIAN__
|
|
(hwcap2 & PPC_FEATURE2_ARCH_3_1
|
|
&& hwcap2 & PPC_FEATURE2_HAS_ISEL
|
|
&& hwcap & PPC_FEATURE_HAS_VSX)
|
|
? __memmove_power10 :
|
|
#endif
|
|
(hwcap & PPC_FEATURE_HAS_VSX)
|
|
? __memmove_power7
|
|
: __memmove_ppc);
|
|
|
|
#undef memmove
|
|
strong_alias (__libc_memmove, memmove);
|
|
libc_hidden_ver (__libc_memmove, memmove);
|
|
#else
|
|
# include <string/memmove.c>
|
|
#endif
|