Hi Frediano, I''m looking at updating the xencov subsystem so that it supports the new gcov structures compiled in by the latest GCC ( http://gcc.gnu.org/viewcvs/gcc/trunk/gcc/gcov-io.h?r1=173147&r2=181105 ). To this end, it''d be good to have the splitting script that you wrote ( http://lists.xen.org/archives/html/xen-devel/2013-02/msg00053.html ) included in the Xen repo (ie. tools/misc), so that it can be similarly updated to output the newer .gcda format GCC tools now expect. I currently use my own intermediate data format along with a Python script, but I''d like to use your Perl one if possible. - Matthew Daley
On Thu, 2013-05-23 at 12:40 +1200, Matthew Daley wrote:> Hi Frediano, > > I''m looking at updating the xencov subsystem so that it supports the > new gcov structures compiled in by the latest GCC ( > http://gcc.gnu.org/viewcvs/gcc/trunk/gcc/gcov-io.h?r1=173147&r2=181105 > ). > > To this end, it''d be good to have the splitting script that you wrote > ( http://lists.xen.org/archives/html/xen-devel/2013-02/msg00053.html ) > included in the Xen repo (ie. tools/misc), so that it can be similarly > updated to output the newer .gcda format GCC tools now expect. I > currently use my own intermediate data format along with a Python > script, but I''d like to use your Perl one if possible. > > - Matthew DaleyHi, you are quite lucky, I was working on this stuff some days ago, I''ll send the mail. Frediano
On Fri, May 24, 2013 at 1:51 AM, Frediano Ziglio <frediano.ziglio@citrix.com> wrote:> On Thu, 2013-05-23 at 12:40 +1200, Matthew Daley wrote: >> Hi Frediano, >> >> I''m looking at updating the xencov subsystem so that it supports the >> new gcov structures compiled in by the latest GCC ( >> http://gcc.gnu.org/viewcvs/gcc/trunk/gcc/gcov-io.h?r1=173147&r2=181105 >> ). >> >> To this end, it''d be good to have the splitting script that you wrote >> ( http://lists.xen.org/archives/html/xen-devel/2013-02/msg00053.html ) >> included in the Xen repo (ie. tools/misc), so that it can be similarly >> updated to output the newer .gcda format GCC tools now expect. I >> currently use my own intermediate data format along with a Python >> script, but I''d like to use your Perl one if possible. >> >> - Matthew Daley > > Hi, > you are quite lucky, I was working on this stuff some days ago, I''ll > send the mail.Thanks. Just to confirm, does that mean you''re working on updating the structure/gcda version too, or is that still up for grabs? :)> > Frediano >
On Fri, 2013-05-24 at 14:28 +1200, Matthew Daley wrote:> On Fri, May 24, 2013 at 1:51 AM, Frediano Ziglio > <frediano.ziglio@citrix.com> wrote: > > On Thu, 2013-05-23 at 12:40 +1200, Matthew Daley wrote: > >> Hi Frediano, > >> > >> I''m looking at updating the xencov subsystem so that it supports the > >> new gcov structures compiled in by the latest GCC ( > >> http://gcc.gnu.org/viewcvs/gcc/trunk/gcc/gcov-io.h?r1=173147&r2=181105 > >> ). > >> > >> To this end, it''d be good to have the splitting script that you wrote > >> ( http://lists.xen.org/archives/html/xen-devel/2013-02/msg00053.html ) > >> included in the Xen repo (ie. tools/misc), so that it can be similarly > >> updated to output the newer .gcda format GCC tools now expect. I > >> currently use my own intermediate data format along with a Python > >> script, but I''d like to use your Perl one if possible. > >> > >> - Matthew Daley > > > > Hi, > > you are quite lucky, I was working on this stuff some days ago, I''ll > > send the mail. > > Thanks. Just to confirm, does that mean you''re working on updating the > structure/gcda version too, or is that still up for grabs? :) >I checked with a gcc 4.6 compiler (-S option and looks at generated assembly) and the internal structured used by gcc are still the same. It seems that libgcov.h points to structures used by the tool library and object internal structures and .gcda structures are not changed. Frediano
On Tue, 2013-05-28 at 10:48 +0100, Frediano Ziglio wrote:> On Fri, 2013-05-24 at 14:28 +1200, Matthew Daley wrote: > > On Fri, May 24, 2013 at 1:51 AM, Frediano Ziglio > > <frediano.ziglio@citrix.com> wrote: > > > On Thu, 2013-05-23 at 12:40 +1200, Matthew Daley wrote: > > >> Hi Frediano, > > >> > > >> I''m looking at updating the xencov subsystem so that it supports the > > >> new gcov structures compiled in by the latest GCC ( > > >> http://gcc.gnu.org/viewcvs/gcc/trunk/gcc/gcov-io.h?r1=173147&r2=181105 > > >> ). > > >> > > >> To this end, it''d be good to have the splitting script that you wrote > > >> ( http://lists.xen.org/archives/html/xen-devel/2013-02/msg00053.html ) > > >> included in the Xen repo (ie. tools/misc), so that it can be similarly > > >> updated to output the newer .gcda format GCC tools now expect. I > > >> currently use my own intermediate data format along with a Python > > >> script, but I''d like to use your Perl one if possible. > > >> > > >> - Matthew Daley > > > > > > Hi, > > > you are quite lucky, I was working on this stuff some days ago, I''ll > > > send the mail. > > > > Thanks. Just to confirm, does that mean you''re working on updating the > > structure/gcda version too, or is that still up for grabs? :) > > > > I checked with a gcc 4.6 compiler (-S option and looks at generated > assembly) and the internal structured used by gcc are still the same. It > seems that libgcov.h points to structures used by the tool library and > object internal structures and .gcda structures are not changed. >Mmm... just tested, they changed binary format in 4.07 version :( Not that good. Probably better to add support for new format too. Frediano
On Tue, 2013-05-28 at 10:19 +0000, Frediano Ziglio wrote:> Mmm... just tested, they changed binary format in 4.07 version :( > > Not that good.Indeed not :-(> Probably better to add support for new format too.Was there a patch for this? I haven''t seen it if so, can you point me to a message-id please. Ian.