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Method to analyze a program for presence of computer viruses by examining the opcode for faults before emulating instruction in emulator

  • US 5,964,889 A
  • Filed: 04/16/1997
  • Issued: 10/12/1999
  • Est. Priority Date: 04/16/1997
  • Status: Expired due to Term
First Claim
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1. A computer-implemented method for using virtual fault management to analyze a program for presence of computer viruses, the method comprising the steps of:

  • fetching an instruction of the program, the instruction including an opcode;

    determining whether a fault is generated by the opcode;

    saving components of a state of an emulator if the fault is generated; and

    interrupting to a fault handler routine.

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