Gcov support in Covoar

[Vijay Kumar Banerjee]

On 4 July 2018 at 13:36, Chris Johns <chrisj at rtems.org> wrote:

>
>
> On 4/7/18 5:55 pm, Vijay Kumar Banerjee wrote:
> > On 4 July 2018 at 13:09, Chris Johns <chrisj at rtems.org
> > <mailto:chrisj at rtems.org>> wrote:
> >
> >     On 4/7/18 5:38 pm, Chris Johns wrote:
> >     > On 4/7/18 4:52 pm, Vijay Kumar Banerjee wrote:
> >     >>
> >     >> I'm starting this thread for discussions on the gcov support
> >     >> in covoar.
> >     >>
> >     >> Current status is that the code in it (like in GcovData.cc)
> remained untouched
> >     >> for a long time and it had not been updated after the source
> tree reorganization
> >     >> which is why it runs into segmentation
> >     >> fault while trying to find the source files.
> >     >>
> >     >> Joel was suggesting to copy the file gcov-io.h from the gcc
> >     >> source after a license discussion here.
> >     >
> >     > What license the file's license?
> >
> >     Sorry .. What is the file's license?
> >
> > GPL version 3
>
> This license is not suitable.
>
> >     > We are aiming to have all code under the RTEMS Tools under a BSD
> or compatible
> >     > license. Are there other options that have a more suitable license?
> >     >
> >     > Also, could you please explain how gcov fits into the coverage
> testing?
> >     >
> >
> > gcov is a test coverage program by gcc that generates
> statement-by-statement
> > profiling.
> > (https://gcc.gnu.org/onlinedocs/gcc/Gcov-Intro.html)
>
> Yes.
>
> > once we're able to generate gcov reports we can run graphical tools like
> lcov or
> > gcovr to generate html and xml reports with detailed coverage data.
> > an example of lcov report:
> > http://ltp.sourceforge.net/coverage/lcov/output/example/
> methods/iterate.c.gcov.html
> >
>
> Do you want to export gcov files from the other trace formats we handle?
>
> How does this fit into the RTEMS Tester tool?
>
>
this is a basic outline of the plan :

   - gcc generates the .gcno notes file at the compile time
   - covoar reads these gcno files and the trace files from qemu and
   produces the gcda files that can be processed by gcov.
   - gcov processes gcno and gcda files to produce coverage reports.



> Chris
>
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