error while building leon3 with gcov flags

[Vijay Kumar Banerjee]

Hello,

I was looking into the code in GcovData.cc to see how it works
and what it's doing, too me it looked like very messed up, I couldn't
understand (yet) what it's trying to do.
Is there some way I can manually run it for one file?
Is there any place where I can read how it was intended to work?
Or something like a flow diagram?


-- vijay

On 7 June 2018 at 02:56, Vijay Kumar Banerjee <vijaykumar9597 at gmail.com>
wrote:

>
>
> On Thu, 7 Jun 2018, 02:39 Joel Sherrill, <joel at rtems.org> wrote:
>
>>
>>
>> On Wed, Jun 6, 2018, 3:56 PM Vijay Kumar Banerjee <
>> vijaykumar9597 at gmail.com> wrote:
>>
>>> On 7 June 2018 at 01:48, Joel Sherrill <joel at rtems.org> wrote:
>>>
>>>>
>>>>
>>>> On Wed, Jun 6, 2018, 2:07 PM Vijay Kumar Banerjee <
>>>> vijaykumar9597 at gmail.com> wrote:
>>>>
>>>>> On 6 June 2018 at 20:49, Joel Sherrill <joel at rtems.org> wrote:
>>>>>
>>>>>> I can't duplicate this. My configure command was:
>>>>>>
>>>>>> ../rtems/configure --target=sparc-rtems5 --enable-rtemsbsp=leon3
>>>>>> --prefix=/home/joel/rtems-work/tools/5 \
>>>>>>    --disable-networking --enable-posix --disable-smp
>>>>>> --disable-multiprocessing \
>>>>>>    --enable-tests --enable-cxx --enable-maintainer-mode
>>>>>>
>>>>>> What was yours?
>>>>>>
>>>>>> I didn't have --enable-cxx and --enable-maintainer-more.
>>>>>
>>>>> I made some tries and somehow it's perfectly working now.
>>>>>
>>>>> I am trying to find out now how covoar generates the reports.
>>>>> I made a file with a list of all gcno in score/ and run with -g
>>>>> argument
>>>>> now I'mg seeing the following error while running covoar
>>>>>
>>>>> ======================
>>>>> Generating Gcov reports...
>>>>> Processing file: libscore_a-allocatormutex.gcno
>>>>> Unable to open libscore_a-allocatormutex.gcno
>>>>> Processing file: libscore_a-apimutexisowner.gcno
>>>>> Unable to open libscore_a-apimutexisowner.gcno
>>>>> Processing file: libscore_a-apimutexlock.gcno
>>>>> Unable to open libscore_a-apimutexlock.gcno
>>>>> Processing file: libscore_a-apimutexunlock.gcno
>>>>> Unable to open libscore_a-apimutexunlock.gcno
>>>>> Processing file: libscore_a-chain.gcno
>>>>> Unable to open libscore_a-chain.gcno
>>>>> Processing file: libscore_a-chainnodecount.gcno
>>>>> .
>>>>> .
>>>>> .
>>>>> ======================
>>>>>
>>>>
>>>> I suspect this is another instance of the path issues inside the build
>>>> tree you and Cillian fixed earlier.
>>>>
>>>> correcting the path worked.
>>>
>>
>> Submit a patch for this. It needs fixing to get 5onyour next issue.
>>
> It just needed the absolute path to be fed.
> here's what I did.
> I manually 'find' all the gcno files under score.
> wrote it all in a file separated by newlines.
> fed that file as an argument to covoar.
> and that brought me here.
>
> So when we write script, these are the
> things that will be done by the script.
>
> Once everything strats running manually,
> we can proceed to write scripts.
>
>>
>>> Now I'm getting this error.
>>>
>>> Generating Gcov reports...
>>> Processing file: sparc-rtems5/c/leon3/cpukit/
>>> score/src/libscore_a-kern_tc.gcno
>>> ERROR: Unable to read string from gcov file
>>> ERROR: Unable to read string length from gcov file
>>> ERROR: Unable to read Function starting line number
>>> Segmentation fault (core dumped)
>>>
>>
>> Welcome to GSoC! You are now in new territory. :)
>>
> So here the real work begins!
>
>>
>> Dig in and see what went wrong. Be aware.that GCC file formats may (or
>> may not) be subject to.changing over time and this could just be bitrot.
>>
> I got started with it.
>
>>
>> Gcov-dump is installed with the compiler.
>>
>> You should check it we have a .h file describing the file and it is out
>> of date.
>>
> I'll look into it.
>
>>
>> Also I think we now should bring the gsov maintainer in.
>>
> The covoar's gcov support needs to be reworked.
> We can get the help of the expert here.
>
>>
>> Good job!
>>
> Thanks. :)
>
>>
>>
>>>
>>>>>> On Wed, Jun 6, 2018 at 9:40 AM, Vijay Kumar Banerjee <
>>>>>> vijaykumar9597 at gmail.com> wrote:
>>>>>>
>>>>>>> Hello,
>>>>>>>
>>>>>>> I have added the following changes in the
>>>>>>> bsps/sparc/leon3/config/leon3.cfg
>>>>>>>
>>>>>>> ----------
>>>>>>> CFLAGS_OPTIMIZE_V = -Os -g
>>>>>>> CFLAGS_OPTIMIZE_V += -ftest-coverage
>>>>>>> -------
>>>>>>>
>>>>>>> While trying to build with these flags, I got a bunch of
>>>>>>> the following errors:
>>>>>>>
>>>>>>> ==========
>>>>>>> {standard input}: Assembler messages:
>>>>>>> {standard input}:6510: Error: can't resolve `.data._SPARC_Counter'
>>>>>>> {.data._SPARC_Counter section} - `.LLtext0' {.text section}
>>>>>>> {standard input}:6511: Error: can't resolve `.data._SPARC_Counter'
>>>>>>> {.data._SPARC_Counter section} - `.LLtext0' {.text section}
>>>>>>>
>>>>>>> ===================
>>>>>>>
>>>>>>> after the `make install` I do get a lot of .gcno files, and no
>>>>>>> executables.
>>>>>>>
>>>>>>> -- vijay
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> devel mailing list
>>>>>>> devel at rtems.org
>>>>>>> http://lists.rtems.org/mailman/listinfo/devel
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>
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