door_ptr_t
di.di_proc = (door_ptr_t)(uintptr_t)dp->door_pc;
di.di_data = (door_ptr_t)(uintptr_t)dp->door_data;
dip->di_proc = (door_ptr_t)(uintptr_t)dp->door_pc;
dip->di_data = (door_ptr_t)(uintptr_t)dp->door_data;
door_ptr_t di_proc; /* Server procedure */
door_ptr_t di_data; /* Data cookie */