mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 22:40:05 +00:00
51cb52214f
With multiarch disabled, the default memmove implementation provides
the fortify routines for memcpy, mempcpy, and memmove. However, it
does not provide the internal hidden definitions used when building
with fortify enabled. The memset has a similar issue.
Checked on x86_64-linux-gnu building with different options:
default and --disable-multi-arch plus default, --disable-default-pie,
--enable-fortify-source={2,3}, and --enable-fortify-source={2,3}
with --disable-default-pie.
Tested-by: Andreas K. Huettel <dilfridge@gentoo.org>
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
67 lines
2.0 KiB
ArmAsm
67 lines
2.0 KiB
ArmAsm
/* Optimized memmove for x86-64.
|
|
Copyright (C) 2016-2023 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/>. */
|
|
|
|
|
|
#ifdef USE_MULTIARCH
|
|
# if !IS_IN (libc)
|
|
# define MEMCPY_SYMBOL(p,s) memcpy
|
|
# endif
|
|
#else
|
|
# if defined SHARED && IS_IN (libc)
|
|
# define MEMCPY_SYMBOL(p,s) __memcpy
|
|
# else
|
|
# define MEMCPY_SYMBOL(p,s) memcpy
|
|
# endif
|
|
#endif
|
|
#if !defined USE_MULTIARCH || !IS_IN (libc)
|
|
# define MEMPCPY_SYMBOL(p,s) __mempcpy
|
|
#endif
|
|
|
|
#define MEMMOVE_CHK_SYMBOL(p,s) p
|
|
#define MEMMOVE_SYMBOL(p,s) memmove
|
|
|
|
|
|
#define DEFAULT_IMPL_V1 "multiarch/memmove-sse2-unaligned-erms.S"
|
|
#define DEFAULT_IMPL_V3 "multiarch/memmove-avx-unaligned-erms.S"
|
|
#define DEFAULT_IMPL_V4 "multiarch/memmove-evex-unaligned-erms.S"
|
|
|
|
#include "isa-default-impl.h"
|
|
|
|
weak_alias (__mempcpy, mempcpy)
|
|
|
|
#ifndef USE_MULTIARCH
|
|
libc_hidden_builtin_def (memmove)
|
|
libc_hidden_builtin_def (__memmove_chk)
|
|
libc_hidden_builtin_def (__memcpy_chk)
|
|
libc_hidden_builtin_def (__mempcpy_chk)
|
|
# if defined SHARED && IS_IN (libc)
|
|
strong_alias (memmove, __memcpy)
|
|
libc_hidden_ver (memmove, memcpy)
|
|
# endif
|
|
libc_hidden_def (__mempcpy)
|
|
weak_alias (__mempcpy, mempcpy)
|
|
libc_hidden_builtin_def (mempcpy)
|
|
|
|
|
|
# if defined SHARED && IS_IN (libc)
|
|
# undef memcpy
|
|
# include <shlib-compat.h>
|
|
versioned_symbol (libc, __memcpy, memcpy, GLIBC_2_14);
|
|
# endif
|
|
#endif
|