the generated coverage report doesn't contain any data

Joel Sherrill joel at rtems.org
Mon Apr 16 22:50:49 UTC 2018 

Cillian.. is he missing a patch?

On Mon, Apr 16, 2018 at 4:52 PM, Vijay Kumar Banerjee <
vijaykumar9597 at gmail.com> wrote:

>
>
> On Tue, 17 Apr 2018, 03:19 Joel Sherrill, <joel at rtems.org> wrote:
>
>>
>>
>> On Mon, Apr 16, 2018 at 4:47 PM, Vijay Kumar Banerjee <
>> vijaykumar9597 at gmail.com> wrote:
>>
>>>
>>>
>>> On 17 April 2018 at 01:43, Cillian O'Donnell <cpodonnell8 at gmail.com>
>>> wrote:
>>>
>>>>
>>>>
>>>> On 16 April 2018 at 17:46, Joel Sherrill <joel at rtems.org> wrote:
>>>>
>>>>>
>>>>>
>>>>> On Mon, Apr 16, 2018 at 2:33 AM, Vijay Kumar Banerjee <
>>>>> vijaykumar9597 at gmail.com> wrote:
>>>>>
>>>>>> current status :
>>>>>> the coverage is running now with rtems-test and generating the
>>>>>> report, however, the report doesn't show any data.
>>>>>>
>>>>>
>>>>> I've been lurking as you have been making progress. Now you have
>>>>> crossed
>>>>> into something you probably need some hints at. Some things to check:
>>>>>
>>>>> + Obviously, check output for signs that something didn't happen right.
>>>>> Anything from a path wrong, etc. The configuration has to be right to
>>>>> point to the source code, object code, executables, etc.
>>>>>
>>>>> + A lot of source code has moved around since last summer. Check
>>>>> that it is looking in the right places inside RTEMS.
>>>>>
>>>>> + Does the mechanism to get debug information actually work? Cillian?
>>>>>
>>>>
>>>> The covoar debug option just disables the cleaning of the tempfiles to
>>>> take a look, so it's not as powerful as it might seem :)... I always used
>>>> gdb here so that's probably the way to go.
>>>>
>>>>>
>>>>> + There is a utility named trace-converter. Make sure your qemu traces
>>>>> have information in them.
>>>>>
>>>>> + Cillian probably has guidance on running it just on one test (say
>>>>> ticker)
>>>>> so you can see every step.
>>>>>
>>>>> + Check that the executables have symbolic information. "file" should
>>>>> show if they are stripped or not.
>>>>>
>>>>> I recall covoar has a verbose mode which should be of use.
>>>>>
>>>>> Cillian .. do you have instructions on running covoar in gdb?
>>>>>
>>>>
>>>> Alright so run rtems-test with --no-clean option to leave the coverage
>>>> files lying around
>>>>
>>>> $HOME/development/rtems/test/test/rtems-tools/tester/rtems-test
>>>> --rtems-tools=$HOME/development/rtems/5 --log=coverage-analysis.log
>>>> --rtems-bsp=leon3_qemu --coverage --no-clean --rtems-builddir=$HOME/development/rtems/leon3
>>>> sparc-rtems5/c/leon3/testsuites/samples
>>>>
>>>> Then run
>>>>
>>>> gdb covoar
>>>>
>>>> from gdb prompt
>>>>
>>>> run -S /home/cpod/coverage_test/leon3/coverage/score.symcfg -O
>>>> /home/cpod/coverage_test/leon3/test/score -fQEMU -Tsparc-rtems5
>>>> -E/home/cpod/development/rtems/test/test/vijay/rtems-
>>>> tools/tester/rtems/testing/coverage/Explanations.txt -c.cov -eexe
>>>> -pRTEMS-5 /home/cpod/development/rtems/leon3/sparc-rtems5/c/leon3/
>>>> testsuites/samples/base_sp/base_sp.exe
>>>>
>>>> The options there are ( if you're wondering )
>>>>
>>>>  -c COVERAGEFILE_EXTENSION EXECUTABLE1 ... EXECUTABLE2
>>>>
>>>>  -v                  - verbose output
>>>>  -T TARGET           - architecture target name
>>>>  -f FORMAT           - simulator format
>>>> (RTEMS, QEMU, TSIM or Skyeye)
>>>>  -E EXPLANATIONS     - file of explanations
>>>>  -s SYMBOLS_FILE     - symbols of interest
>>>>  -S SYMBOL_SET_FILE  - path to symbol_sets.cfg
>>>>  -1 EXECUTABLE       - executable to get symbols from
>>>>  -e EXE_EXTENSION    - suffix for executables
>>>>  -c COVERAGEFILE_EXT - coverage file suffix
>>>>  -g GCNOS_LIST       - list of *.gcno files
>>>>  -p PROJECT_NAME     - name of the project
>>>>  -O Output_Directory - output directory default=.
>>>>  -d debug            - disable cleaning of tempfiles.
>>>>
>>>>
>>> maybe the problem is here . I am getting an error for the -S . Here are
>>> the list of options that show up , capital S for symbol_set_file is not one
>>> of them .
>>>
>>> Usage: /home/lunatic/development/rtems/5/bin/covoar [-v] -T TARGET -f
>>> FORMAT [-E EXPLANATIONS] -e EXE_EXTENSION -c COVERAGEFILE_EXTENSION
>>> EXECUTABLE1 ... EXECUTABLE2
>>>
>>>   -v                        - verbose at initialization
>>>   -T TARGET                 - target name
>>>   -f FORMAT                 - coverage file format (RTEMS, QEMU, TSIM or
>>> Skyeye)
>>>   -E EXPLANATIONS           - name of file with explanations
>>>   -s SYMBOLS_FILE           - name of file with symbols of interest
>>>   -1 EXECUTABLE             - name of executable to get symbols from
>>>   -e EXE_EXTENSION          - extension of the executables to analyze
>>>   -c COVERAGEFILE_EXTENSION - extension of the coverage files to analyze
>>>   -g GCNOS_LIST             - name of file with list of *.gcno files
>>>   -p PROJECT_NAME           - name of the project
>>>   -C ConfigurationFileName  - name of configuration file
>>>   -O Output_Directory       - name of output directory (default=.
>>>
>>
>> Is it processed by the getopts switch statement in main() but not listed
>> in the usage? That is
>> an easy mistake to creep in.
>>
> It gives an "invalid option" error
>
>>
>>
>>>
>>>
>>>> Just trying it there, it runs into segmentation fault. So trying to
>>>> access memory it shouldn't.
>>>>
>>>> Starting program: /home/cpod/covoar -S /home/cpod/coverage_test/leon3/coverage/score.symcfg
>>>> -O /home/cpod/coverage_test/leon3/test/score -fQEMU -Tsparc-rtems5
>>>> -E/home/cpod/development/rtems/test/test/vijay/rtems-
>>>> tools/tester/rtems/testing/coverage/Explanations.txt -c.cov -eexe
>>>> -pRTEMS-5 /home/cpod/development/rtems/leon3/sparc-rtems5/c/leon3/
>>>> testsuites/samples/base_sp/base_sp.exe
>>>> Reading configuration symbol set file: /home/cpod/coverage_test/
>>>> leon3/coverage/score.symcfg
>>>>
>>>> Program received signal SIGSEGV, Segmentation fault.
>>>> 0x00007ffff7b769bb in std::__cxx11::basic_string<char,
>>>> std::char_traits<char>, std::allocator<char> >::basic_string(std::__cxx11::basic_string<char,
>>>> std::char_traits<char>, std::allocator<char> > const&) ()
>>>>    from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
>>>>
>>>> Ahhh feels good to have error messages back.
>>>>
>>>> Oh also build covoar with no optimization and you'll have an easier
>>>> time looking at stuff in gdb
>>>>
>>>> cd rtems-tools/tester/covoar
>>>>
>>>> vim wscript and change the '-O2' to '-O0' and then build again with waf
>>>> and use that covoar to with gdb
>>>>
>>>>
>>>>>
>>>>>
>>>>>>
>>>>>> -- vijay
>>>>>>
>>>>>
>>>>>
>>>>
>>>
>>
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