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Using the Emulation Analyzer
To define a prestore qualifier
You use the prestore qualifier to save states that are related to other routines
that you're tracing. For example, you might be tracing a subprogram, and
want to see which program called it. You can specify calls be prestored and
that entries to the subprogram be stored. The easiest way to do this is to
prestore program reads that are outside the address range of the subprogram
being called.
You may have several program modules that write to a variable, and
sometime during execution of your program, that variable gets bad data
written to it. Using a prestore measurement, you can find out which module
is writing the bad data. Store-qualify writes to the variable, and use prestore
to capture the instructions that caused those writes to occur (perhaps by
prestoring program reads).
Examples
Specify a prestore qualifier:
trace prestore address not range gen_ascii_data
thru gen_ascii_data end status program and read
only gen_ascii_data
Disable prestore qualification:
trace prestore anything
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