mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 06:20:06 +00:00
baf2a265c7
By adding an internal alias to avoid the GOT indirection.
On some architecture, __libc_single_thread may be accessed through
copy relocations and thus it requires to update also the copies
default copy.
This is done by adding a new internal macro,
libc_hidden_data_{proto,def}, which has an addition argument that
specifies the alias name (instead of default __GI_ one).
Checked on x86_64-linux-gnu and i686-linux-gnu.
Reviewed-by: Fangrui Song <maskray@google.com>
30 lines
1.2 KiB
C
30 lines
1.2 KiB
C
/* Support for single-thread optimizations. Statically linked version.
|
|
Copyright (C) 2020-2022 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/>. */
|
|
|
|
#include <sys/single_threaded.h>
|
|
|
|
/* In dynamically linked programs, this variable is initialized in
|
|
__libc_early_init (as false for inner libcs). */
|
|
#ifdef SHARED
|
|
char __libc_single_threaded;
|
|
#else
|
|
char __libc_single_threaded = 1;
|
|
#endif
|
|
libc_hidden_data_def_alias (__libc_single_threaded,
|
|
__libc_single_threaded_internal)
|