NON-INTRUSIVE APPLICATION CODE PROFILING METHOD AND APPARATUS

摘要

System and method for monitoring a processor when it executes software code for a computer program. A register (16) collects information regarding instructions executed by the processor, from the program counter (14); and a sampler (18), operatively connected to the register, asynchronously from the operation of the processor, samples contents of the register. The sampler may provide the samples to a host computer (42) via a shift register (28) in a JTAG port, and the host computer may provide a statistical record of the instructions executed by the processor.