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| | #include "pthread_impl.h"
static struct pthread *main_thread = &(struct pthread){0};
/* pthread_key_create.c overrides this with a modifiable array
whenever the executable is linked with pthread_key_create. If it is
not, and an attempt is made to write to the pthread_key system, the
program will crash, since this is in a read-only segment. */
WEAK_PROVIDE_DUMMY;
_Readonly_alias void* __pthread_tsd_main[PTHREAD_KEYS_MAX];
static int init_main_thread()
{
__syscall(SYS_rt_sigprocmask, SIG_UNBLOCK,
SIGPT_SET, 0, __SYSCALL_SSLEN);
if (__set_thread_area(TP_ADJ(main_thread)) < 0) return -1;
main_thread->canceldisable = libc.canceldisable;
main_thread->tsd = __pthread_tsd_main;
main_thread->errno_ptr = __errno_location();
main_thread->self = main_thread;
main_thread->tid = main_thread->pid =
__syscall(SYS_set_tid_address, &main_thread->tid);
libc.main_thread = main_thread;
return 0;
}
pthread_t __pthread_self_def()
{
static int init, failed;
if (!init) {
if (failed) return 0;
if (init_main_thread() < 0) failed = 1;
if (failed) return 0;
init = 1;
}
return __pthread_self();
}
weak_alias(__pthread_self_def, pthread_self);
weak_alias(__pthread_self_def, __pthread_self_init);
void *__install_initial_tls(void *p)
{
main_thread = p;
return __pthread_self_def();
}
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