addr_to_sym
addr_to_sym(uintptr_t addr, uintptr_t *offset, size_t *sizep)
addr_to_sym(mdb_tgt_t *t, uintptr_t addr, char *name, size_t namelen,
addr_to_sym(struct ps_prochandle *ph, ulong_t addr,
addr_to_sym(void *addr)