Sourcery G++ Lite includes CS3 support for code profiling on MIPS ELF
targets using gprof. To enable profiling,
compile your program with the -pg
option.
You must also build your program with a hosted linker script.
You can run a program built with profiling from the debugger the same
as you would any other hosted application.
While your program is running, profiling data is saved in buffers in
the heap memory area on the target. This may affect the amount of
memory available to your application, and it is also possible that
the profiler itself may run out of memory. Profiling data is written
to a file on the host (gmon.out
) only when your
application exits. Since many embedded applications are structured
to run indefinitely rather than exit, you may need to add an explicit
exit
call in order to collect profiling data.
For instructions on using the mips-sde-elf-gprof
utility to process the collected gmon.out
data,
refer to the GNU Profiler (gprof) manual included with Sourcery G++ Lite.