door_server_procedure_t
int door_create(door_server_procedure_t *, void *, uint_t);
int door_xcreate(door_server_procedure_t *, void *, uint_t,
door_create_cmn(door_server_procedure_t *f, void *cookie, uint_t flags,
door_create(door_server_procedure_t *f, void *cookie, uint_t flags)
door_xcreate(door_server_procedure_t *f, void *cookie, uint_t flags,
(door_server_procedure_t *)(uintptr_t)get_stack_at_entry,