1.1.4. Trace compression

The ETM compresses trace information to reduce the number of additional pins required on the ASIC, or to reduce the amount of memory required by the ETB.

The ETM uses the following techniques to compress trace information:

Note

For the debugger to be able to decode the trace, you must supply a static image of the code being executed. This restriction means that you cannot trace self-modifying code.

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