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APPARATUS AND METHOD FOR PROTECTING MEMORY IN MULTI-PROCESSOR SYSTEM

  • US 20120198206A1
  • Filed: 01/19/2012
  • Published: 08/02/2012
  • Est. Priority Date: 01/31/2011
  • Status: Active Grant
First Claim
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1. A memory protection method, comprising:

  • extracting a segment address and a subsegment address from a memory address corresponding to a memory access, when a Central Processing Unit (CPU) attempts the memory access with respect to a memory;

    comparing the extracted segment address with a segment base address, and when the segment base address is different from the extracted segment address, transmitting an exception signal to the CPU, the segment base address being comprised in a segment register, and the exception signal indicating that the memory access is disallowed; and

    determining whether the subsegment address is comprised in a subsegment register, and when the subsegment address is not comprised in the subsegment register, transmitting the exception signal to the CPU.

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