MULTICORE PROCESSOR SYSTEM, RESTORATION PROGRAM, AND METHOD OF RESTORATION

摘要

In (D), an encryption engine (104) compresses block data (MC51) and generates compressed data (mc51) according to an instruction from a privilege mode program (H). Further, a hash value (h51) is generated for the compressed data (mc51). A hash value (h5) and the hash value (h51) are compared. Because a block data (MC5) is modified by the block data (MC51) in response to a fault, the compressed data (mc51) and the hash value (h51) are saved. In this case, the master CPU is stalling, so, of the compressed data (mc5, mc51), the compressed data (mc5) before modification as a result of the fault is expanded and a block data (MC5) is generated. Then, in (E) the faulty block data (MC51) is replaced by the expanded block data (MC5), and thereby a master context MC (block data (MC12), (MC2) - (MC8)) is restored.