Method and apparatus for verifying the fine-grained correctness of a behavioral model of a central processor unit

摘要

A method and an apparatus checks the fine-grain correctness of a microcode machine central processor unit (CPU) behavioral model. Macroinstructions are decomposed into microinstructions and each microinstruction is executed sequentially. A sequence of microinstructions is determined by an emulated microinstruction sequencer, using dynamic execution information, including information from execution of prior microinstructions in the sequence of microinstructions. At the end of execution of each microinstruction, a reference state is compared to a corresponding state of the behavioral model, and any differences are noted. After execution of all microinstructions in the microinstruction sequence, a reference state is compared to a corresponding state of the behavioral model, and any differences are noted.