SYSTEM AND METHOD FOR DELAYING EXCEPTION GENERATED DURING SPECULATIVE EXECUTION

摘要

PROBLEM TO BE SOLVED: To provide a method for supporting the speculative execution of an instruction set. SOLUTION: The method is provided with a step (64) for evaluating the instructions of the instruction set during execution to judge whether the individual instruction is speculative or not, a step (70) for evaluating each of the speculative instructions to judge whether it generates an exception and a step (74) for encoding a deferred exception token(DET) to an unused register value of the register of CPU concerning each speculative instruction generating an exception. This system is provided with a circuit for evaluating the instruction of the instruction set to judge whether the individual instruction is speculative or not, a circuit for evaluating each of the speculative instructions to judge whether it generates an exception and a circuit encoding DET to the unused register value of the register of CPU in response to an assessing means.