Hash instruction

摘要

The present invention provides an apparatus and method for performing hash operations. The apparatus provides an instruction for employment by a device. The instruction directs the device to perform a hash operation. The instruction has an opcode field and a repeat prefix field. The opcode field prescribes that the device accomplish the hash operation. The repeat prefix field is coupled to the opcode field and indicates that the hash operation prescribed by the instruction is to be accomplished on one or more message blocks.