Patent ID: 6125443
Filing Date: 2000-09-26
Classification: G06F

Abstract:
An interrupt processing system for an information processing system of pipeline control type capable of sequentially processing a plurality of instructions in parallel through an instruction control unit, comprising:an exception occurrence detection unit for detecting occurrence of an exception for each plurality of instructions to be processed in parallel;an exception reporting unit for reporting the occurrence of an exception for said plurality of instructions to be processed in parallel as to which occurrence of an exception has been detected collectively according to each cause of the exception;an interrupt request control unit for issuing an interrupt request in a case where the occurrence of an exception is reported for said plurality of instructions to be processed in parallel from said exception reporting unit; anda reexecution unit for restoring, in response to said interrupt request, the pipeline processing of said instruction control unit to a state before execution of the leading one of said plurality of instructions to be processed in parallel for which said exception is detected and for reexecuting the plurality of instructions to be processed in parallel as to which occurrence of an exception has been detected one by one sequentially from leading one thereof through said instruction control unit.