V2 Add DWARF support to the rtemstoolkit and put it to use.

[Cillian O'Donnell]

On Thu, 10 May 2018, 03:43 Chris Johns, <chrisj at rtems.org> wrote:

> On 10/5/18 8:47 am, Cillian O'Donnell wrote:
> > Just running covoar there, we seem to be running into some problems at
> the
> > source line lookup stage
>
> Thank you for testing this. I assume it builds OK and we can run it?
>

Builds with a couple of warnings, other than that it's fine. Hopefully no
issues on freebsd.

>
> > cpod at cpod ~/development/rtems/leon3 $ covoar -S
> >
> /home/cpod/development/rtems/test/rtems-tools/tester/rtems/testing/coverage/score-symbols.ini
> > -O /home/cpod/coverage_test/test/score
> >
> -E/home/cpod/development/rtems/test/rtems-tools/tester/rtems/testing/coverage/Explanations.txt
> > -p RTEMS-5 -v sparc-rtems5/c/leon3/testsuites/samples/hello/hello.exe
> > Processing multiple executable/coverage file pairs
> > Coverage Format : html
> > Target          : sparc-rtems5
> >
> > Coverage file sparc-rtems5/c/leon3/testsuites/samples/hello/hello.cov for
> > executable: sparc-rtems5/c/leon3/testsuites/samples/hello/hello.exe
> > Loading symbol sets:
> >
> /home/cpod/development/rtems/test/rtems-tools/tester/rtems/testing/coverage/score-symbols.ini
> >  Symbol set: score
> >  Loading library: sparc-rtems5/c/leon3/cpukit/score/libscore.a
> > cache:load-sym: object files: 192
> > cache:load-sym: symbols: 382
> > Analyzing 382 symbols
> > Extracting information from:
> sparc-rtems5/c/leon3/testsuites/samples/hello/hello.exe
> > Created unified coverage map for _RTEMS_Lock_allocator (0x0 - 0x13)
> > Created unified coverage map for _RTEMS_Unlock_allocator (0x0 - 0x13)
> > Created unified coverage map for _API_Mutex_Lock (0x0 - 0x2f)
> > Created unified coverage map for _API_Mutex_Unlock (0x0 - 0x2f)
> > Created unified coverage map for _Chain_Initialize (0x0 - 0x4f)
> > Created unified coverage map for _Freechain_Initialize (0x0 - 0x33)
> > Created unified coverage map for _Freechain_Get (0x0 - 0x77)
> > Created unified coverage map for _Freechain_Put (0x0 - 0x27)
> > Created unified coverage map for _Heap_Allocate_aligned_with_boundary
> (0x0 - 0x23f)
> > ................
> > ...............
> > ...............
> > Branch always taken found in_Workspace_Handler_initialization
> (0x4000ab8c -
> > 0x4000ab8f)
> > Branch never taken found in _Workspace_Handler_initialization
> (0x1073785764 -
> > 0x1073785767)
> > Branch never taken found in _Workspace_Handler_initialization
> (0x1073785776 -
> > 0x1073785779)
> > Calculate statistics
> > Looking up source lines for uncovered ranges and branches
> > Looking up source lines for uncovered ranges in CSWTCH.1
> > terminate called after throwing an instance of 'rld::error'
> > Aborted
> >
> > --------------------
> > GDB
> > --------------------
> >
> > (gdb) bt
> > #0  0x00007ffff74aa428 in __GI_raise (sig=sig at entry=6)
> >     at ../sysdeps/unix/sysv/linux/raise.c:54
> > #1  0x00007ffff74ac02a in __GI_abort () at abort.c:89
> > #2  0x00007ffff7ae484d in __gnu_cxx::__verbose_terminate_handler() ()
> >    from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
> > #3  0x00007ffff7ae26b6 in ?? () from
> /usr/lib/x86_64-linux-gnu/libstdc++.so.6
> > #4  0x00007ffff7ae2701 in std::terminate() ()
> >    from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
> > #5  0x00007ffff7ae2919 in __cxa_throw ()
> >    from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
> > #6  0x000000000042ad4a in rld::dwarf::address::path[abi:cxx11]() const (
> >     this=this at entry=0x7fffffffcc10) at ../rtemstoolkit/rld-dwarf.cpp:129
> > #7  0x000000000042dfad in rld::dwarf::file::get_source (this=this at entry
> =0x6be568,
> >     addr=<optimized out>, source_file="unknown",
> source_line=@0x7fffffffccdc: -1)
> >     at ../rtemstoolkit/rld-dwarf.cpp:860
> > #8  0x000000000040d541 in Coverage::ExecutableInfo::getSourceAndLine (
> >     this=this at entry=0x6be3c0, address=<optimized out>, line="")
> >     at ../tester/covoar/ExecutableInfo.cc:134
> > #9  0x000000000040a115 in Coverage::DesiredSymbols::determineSourceLines
> (
> >     this=this at entry=0xafee70, theRanges=theRanges at entry=0xd626f0,
> >     theExecutable=0x6be3c0) at ../tester/covoar/DesiredSymbols.cc:411
> > #10 0x000000000040a24f in
> Coverage::DesiredSymbols::findSourceForUncovered (
> >     this=0xafee70) at ../tester/covoar/DesiredSymbols.cc:440
> > #11 0x0000000000406028 in main (argc=<optimized out>, argv=<optimized
> out>)
> >     at ../tester/covoar/covoar.cc:526
>
> This looks like an exception being thrown in a destructor path.
>
> >
> > I'll attach a trace file I'm using to debug, hopefully you can use this.
> It has
> > to go with hello.exe in the build directory
>
> Thank you for this. I will try and see what I find.
>
> Chris
>
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