Dynamic software code instrumentation method and system

Details Dynamic software code instrumentation method and system Dynamic software code instrumentation method and system

2007-01-23

2007-01-23

Zhen, Wei (Department: 2191)

Data processing: software development, installation, and managem

Software program development tool

Testing or debugging

C717S128000, C717S129000, C717S134000

Reexamination Certificate

active

10114793

ABSTRACT:
A method and system of monitoring code as it is executed by a target processor is provided for debugging, etc. Standardized software code function preamble and postamble instructions are dynamically replaced with instructions that will generate a predetermined exception. The exception generates a branch to a conventional exception vector table. An exception routine is inserted into the vector table, and includes instruction(s) to disable the data and/or address caches. Subsequent instructions in the vector table execute the replaced preamble instruction and, with or without re-enabling the cache, branch back to the address of the program code immediately following the faulted preamble address. Instructions of the function executed while cache is disabled are executed on the bus where they are visible, as opposed to within cache.

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