617 	struct unw_reg_state *rs;  in push()  local
619 	rs = alloc_reg_state();  in push()
620 	if (!rs) {  in push()
624 	memcpy(rs, &sr->curr, sizeof(*rs));  in push()
625 	sr->curr.next = rs;  in push()
631 	struct unw_reg_state *rs = sr->curr.next;  in pop()  local
633 	if (!rs) {  in pop()
637 	memcpy(&sr->curr, rs, sizeof(*rs));  in pop()
638 	free_reg_state(rs);  in pop()
643 dup_state_stack (struct unw_reg_state *rs)  in dup_state_stack()  argument
647 	while (rs) {  in dup_state_stack()
653 		memcpy(copy, rs, sizeof(*copy));  in dup_state_stack()
658 		rs = rs->next;  in dup_state_stack()
666 free_state_stack (struct unw_reg_state *rs)  in free_state_stack()  argument
670 	for (p = rs->next; p != NULL; p = next) {  in free_state_stack()
674 	rs->next = NULL;  in free_state_stack()