mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 22:40:05 +00:00
6573396163
This is required for GCC versions before 10 which default to -fcommon.
Fixes commit 442e8a40da ("nptl: Move part
of TCB initialization from libpthread to __tls_init_tp").
68 lines
2.5 KiB
C
68 lines
2.5 KiB
C
/* Completion of TCB initialization after TLS_INIT_TP. NPTL version.
|
|
Copyright (C) 2020-2021 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/>. */
|
|
|
|
#include <kernel-features.h>
|
|
#include <ldsodefs.h>
|
|
#include <list.h>
|
|
#include <nptl/pthreadP.h>
|
|
#include <tls.h>
|
|
|
|
#ifndef __ASSUME_SET_ROBUST_LIST
|
|
bool __nptl_set_robust_list_avail __attribute__ ((nocommon));
|
|
rtld_hidden_data_def (__nptl_set_robust_list_avail)
|
|
#endif
|
|
|
|
void
|
|
__tls_init_tp (void)
|
|
{
|
|
/* Set up thread stack list management. */
|
|
INIT_LIST_HEAD (&GL (dl_stack_used));
|
|
INIT_LIST_HEAD (&GL (dl_stack_user));
|
|
list_add (&THREAD_SELF->list, &GL (dl_stack_user));
|
|
|
|
/* Early initialization of the TCB. */
|
|
struct pthread *pd = THREAD_SELF;
|
|
pd->tid = INTERNAL_SYSCALL_CALL (set_tid_address, &pd->tid);
|
|
THREAD_SETMEM (pd, specific[0], &pd->specific_1stblock[0]);
|
|
THREAD_SETMEM (pd, user_stack, true);
|
|
|
|
/* Initialize the robust mutex data. */
|
|
{
|
|
#if __PTHREAD_MUTEX_HAVE_PREV
|
|
pd->robust_prev = &pd->robust_head;
|
|
#endif
|
|
pd->robust_head.list = &pd->robust_head;
|
|
pd->robust_head.futex_offset = (offsetof (pthread_mutex_t, __data.__lock)
|
|
- offsetof (pthread_mutex_t,
|
|
__data.__list.__next));
|
|
int res = INTERNAL_SYSCALL_CALL (set_robust_list, &pd->robust_head,
|
|
sizeof (struct robust_list_head));
|
|
if (!INTERNAL_SYSCALL_ERROR_P (res))
|
|
{
|
|
#ifndef __ASSUME_SET_ROBUST_LIST
|
|
__nptl_set_robust_list_avail = true;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/* Set initial thread's stack block from 0 up to __libc_stack_end.
|
|
It will be bigger than it actually is, but for unwind.c/pt-longjmp.c
|
|
purposes this is good enough. */
|
|
THREAD_SETMEM (pd, stackblock_size, (size_t) __libc_stack_end);
|
|
}
|