DATA PROCESSOR

摘要

PROBLEM TO BE SOLVED: To provide a data processor capable of reducing secure resource since a load on a protection mechanism for protecting the resource is increased when the secure resource is increased in a secure mode in the data processor executing a process while switching between the secure mode for accessing the secure resource to be protected and a normal mode disabled to access the secure resource. SOLUTION: This date processor stores at least one processing procedure utilizing the secure resource and a secure program including a call instruction for calling a normal program executed in the normal mode, calls the normal program by the call instruction during execution of the secure program and operates according to the normal program called. COPYRIGHT: (C)2005,JPO&NCIPI