glibc/sysdeps/x86_64/dl-tls.c
Paul Eggert 2b778ceb40 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
2021-01-02 12:17:34 -08:00

54 lines
1.7 KiB
C

/* Thread-local storage handling in the ELF dynamic linker. x86-64 version.
Copyright (C) 2017-2021 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/>. */
#ifdef SHARED
/* Work around GCC PR58066, due to which __tls_get_addr may be called
with an unaligned stack. The compat implementation is in
tls_get_addr-compat.S. */
# include <dl-tls.h>
/* Define __tls_get_addr within elf/dl-tls.c under a different
name. */
extern __typeof__ (__tls_get_addr) ___tls_get_addr;
# define __tls_get_addr ___tls_get_addr
# include <elf/dl-tls.c>
# undef __tls_get_addr
hidden_ver (___tls_get_addr, __tls_get_addr)
/* Only handle slow paths for __tls_get_addr. */
attribute_hidden
void *
__tls_get_addr_slow (GET_ADDR_ARGS)
{
dtv_t *dtv = THREAD_DTV ();
if (__glibc_unlikely (dtv[0].counter != GL(dl_tls_generation)))
return update_get_addr (GET_ADDR_PARAM);
return tls_get_addr_tail (GET_ADDR_PARAM, dtv, NULL);
}
#else
/* No compatibility symbol needed. */
# include <elf/dl-tls.c>
#endif