INFORMATION CONTROLLER, FAILURE ANALYSIS METHOD AND FAILURE ANALYSIS PROGRAM FOR CAUSE INVESTIGATION OF MEMORY ACCESS ERROR OCCURRING ASYNCHRONOUSLY WITH INSTRUCTION EXECUTION IN CPU

摘要

PPROBLEM TO BE SOLVED: To provide a method for easily performing failure analysis to a memory access error occurring asynchronously with instruction execution in a CPU because there are cases where the failure analysis is difficult because a program (OS) position having issued a memory access instruction cannot be uniquely specified even if seeing a CPU register value when occurrence of the error. PSOLUTION: An information processor adds a register value when executing the instruction to an address of a memory designated by the memory access instruction to expand the address (an expansion address), and executes memory access by use of the expansion address. The information processor presents the expansion address to a user at a time of the memory access error occurrence. Thereby, because the user can obtain the register value when executing the instruction having causing the error occurrence even if the CPU executes another instruction when occurrence of the error, the program (OS) position having issued the instruction can be uniquely specified. PCOPYRIGHT: (C)2011,JPO&INPIT