Mass. R. Crim. P. 22
(Applicable to Superior Court and jury sessions in District Court)
Exceptions to rulings or orders of the court are unnecessary and for all purposes for which an exception has heretofore been necessary, it is sufficient that a party, at the time the ruling or order of the court is made or sought, makes known to the court the action which he desires the court to take or his objection to the action of the court, but if a party has no opportunity to object to a ruling or order, the absence of an objection does not thereafter prejudice him.
If a party objects to a ruling or order of the court, he may state the precise legal grounds of his objection, but he shall not argue or further discuss such grounds unless the court calls upon him for such argument or discussion.
Mass. R. Crim. P. 22