void __init_ssp(void *entropy)
{
pthread_t self = __pthread_self_init();
uintptr_t canary;
if (entropy) memcpy(&canary, entropy, sizeof canary);
else canary = (uintptr_t)&canary * 1103515245;
a_cas_l(&__stack_chk_guard, 0, canary);
self->canary = __stack_chk_guard;
}
void __init_ssp(size_t *auxv)
{
size_t i;
pthread_t self = __pthread_self_init();
uintptr_t canary;
for (i=0; auxv[i] && auxv[i]!=AT_RANDOM; i+=2);
if (auxv[i]) memcpy(&canary, (void *)auxv[i+1], sizeof canary);
else canary = (uintptr_t)&canary * 1103515245;
a_cas_l(&__stack_chk_guard, 0, canary);
self->canary = __stack_chk_guard;
}
int pthread_key_create(pthread_key_t *k, void (*dtor)(void *))
{
unsigned i = (uintptr_t)&k / 16 % PTHREAD_KEYS_MAX;
unsigned j = i;
__pthread_self_init();
if (!dtor) dtor = nodtor;
do {
if (!a_cas_p(keys+j, 0, dtor)) {
*k = j;
return 0;
}
} while ((j=(j+1)%PTHREAD_KEYS_MAX) != i);
return EAGAIN;
}
int pthread_key_create(pthread_key_t *k, void (*dtor)(void *))
{
unsigned i = (uintptr_t)&k / 16 % PTHREAD_KEYS_MAX;
unsigned j = i;
#ifndef __EMSCRIPTEN__ // XXX Emscripten does not need specific initialization for threads, the runtime has initialized everything prior to running.
__pthread_self_init();
#endif
if (!dtor) dtor = nodtor;
do {
if (!a_cas_p(keys+j, 0, (void *)dtor)) {
*k = j;
return 0;
}
} while ((j=(j+1)%PTHREAD_KEYS_MAX) != i);
return EAGAIN;
}
