| 摘要 |
a data processing apparatus includes: an instruction execution section; an instruction protection information storage section that stores instruction protection information for specifying at least one partial address space in an instruction address space for storing instructions executed by the instruction execution section; a data protection information storage section that stores data protection information for specifying multiple partial address spaces in a data address space for storing operands for use in an operation of the instruction execution section; and a protection violation determination section that determines whether to permit access from the instruction execution section based on setting of the instruction and data protection information storage sections. The data processing apparatus selectively invalidates protection of the instruction address space using the instruction protection information storage section, independently of protection of the data address space using the data protection information storage section.
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