Motorola DSP56305 Manuel d'utilisateur télécharger pdf (Page 104)

MOTOROLA Optimizing DSP56300/DSP56600 Applications C-1

This section

describes way to

optimize the

application for

minimal power

consumption

Appendix C

USING THE PROFILER

C.1 SCOPE

Profiling capabilities are built into the Motorola DSP Simulator. The

profiler provides dynamic and static analysis. The analysis results

are displayed in profiling report files.

Note: Acquaintance with Motorola DSP Simulator is required for

activating the profiler. Please refer to the Simulator’s user’s

manual for detailed description of the DSP Simulator.

C.2 CREATING A PROFILER

Being an integral part of the Motorola DSP Simulator, the code that

is to be profiled is first loaded into the Simulator. The embedded

profiler is activated using the Simulator’s “log” command, by

specifying the ‘p’ command option. To invoke the profiler type the

command:

LOG P filename

Note: ‘filename’ is the name of the output file into which the profile

report will be written.

The DSP program should be assembled using the DSP Assembler’s

and Linker’s -g command line option. This option directs the

Assembler and Linker to place symbolic information in the

generated COFF file.

Profiling is terminated when the Simulator is exited, or when the

user issues the command ‘log off p’ or ‘log off’. Upon termination of

the profiling the profiler metrics report is written to file (see Section

C.3 on page C-2).

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Motorola DSP56305 Manuel d'utilisateur Page 104