static void dummy_0()
{
}
-weak_alias(dummy_0, __synccall_lock);
-weak_alias(dummy_0, __synccall_unlock);
+weak_alias(dummy_0, __acquire_ptc);
+weak_alias(dummy_0, __release_ptc);
weak_alias(dummy_0, __pthread_tsd_run_dtors);
-void pthread_exit(void *result)
+_Noreturn void pthread_exit(void *result)
{
pthread_t self = pthread_self();
int n;
__unmapself(self->map_base, self->map_size);
}
- __syscall(SYS_exit, 0);
+ for (;;) __syscall(SYS_exit, 0);
}
void __do_cleanup_push(struct __ptcb *cb)
if (f && f->lock<0) f->lock = 0;
}
-int pthread_create(pthread_t *res, const pthread_attr_t *attr, void *(*entry)(void *), void *arg)
+void *__copy_tls(unsigned char *);
+
+int pthread_create(pthread_t *restrict res, const pthread_attr_t *restrict attr, void *(*entry)(void *), void *restrict arg)
{
int ret;
size_t size = DEFAULT_STACK_SIZE + DEFAULT_GUARD_SIZE;
libc.threaded = 1;
}
+ __acquire_ptc();
+
if (attr && attr->_a_stackaddr) {
map = 0;
tsd = (void *)(attr->_a_stackaddr-__pthread_tsd_size & -16);
} else {
if (attr) {
guard = ROUND(attr->_a_guardsize + DEFAULT_GUARD_SIZE);
- size = guard + ROUND(attr->_a_stacksize + DEFAULT_STACK_SIZE);
+ size = guard + ROUND(attr->_a_stacksize
+ + DEFAULT_STACK_SIZE + libc.tls_size);
}
size += __pthread_tsd_size;
- map = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
- if (map == MAP_FAILED) return EAGAIN;
- if (guard) mprotect(map, guard, PROT_NONE);
+ if (guard) {
+ map = mmap(0, size, PROT_NONE, MAP_PRIVATE|MAP_ANON, -1, 0);
+ if (map == MAP_FAILED) return EAGAIN;
+ if (mprotect(map+guard, size-guard, PROT_READ|PROT_WRITE)) {
+ munmap(map, size);
+ return EAGAIN;
+ }
+ } else {
+ map = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
+ if (map == MAP_FAILED) return EAGAIN;
+ }
tsd = map + size - __pthread_tsd_size;
}
- new = (void *)(tsd - sizeof *new - PAGE_SIZE%sizeof *new);
+ new = __copy_tls(stack = tsd - libc.tls_size);
new->map_base = map;
new->map_size = size;
new->pid = self->pid;
flags -= 0x200000;
}
new->unblock_cancel = self->cancel;
- new->canary = self->canary ^ (uintptr_t)&new;
- stack = (void *)new;
-
- __synccall_lock();
+ new->canary = self->canary;
a_inc(&libc.threads_minus_1);
- ret = __clone(start, stack, flags, new, &new->tid, new, &new->tid);
+ ret = __clone(start, stack, flags, new, &new->tid, TP_ADJ(new), &new->tid);
- __synccall_unlock();
+ __release_ptc();
if (ret < 0) {
a_dec(&libc.threads_minus_1);