dt_bkpt_f
(dt_bkpt_f *)dt_proc_rdevent, (void *)evname);
(dt_bkpt_f *)dt_proc_bpmain, "a.out`main");
dt_proc_bpcreate(dt_proc_t *dpr, uintptr_t addr, dt_bkpt_f *func, void *data)
dt_bkpt_f *dbp_func; /* callback function to execute */