Branch trace methodology

Details Branch trace methodology Branch trace methodology

2011-08-09

2011-08-09

Song, Hosuk (Department: 2435)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

C713S190000

Reexamination Certificate

active

07996686

ABSTRACT:
Method, system, and computer program product embodiments for performing a branch trace operation on a computer system of an end user are provided. An encrypted mapping macro is provided to the end user to be made operational on the computer system. A trace program is provided to the end user. The end user executes the trace program on the computer system as a diagnostic tool. The trace program is adapted for decrypting the encrypted mapping macro, determining a storage offset location of a branch instruction; checking the storage offset location for an identifying constant, cross referencing the identifying constant with an entry in the decrypted mapping macro to identify a branch triggering bit and diagnostic information associated with the branch instruction, and returning the branch triggering bit and diagnostic information, the branch triggering bit and diagnostic information provided to a coder.

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