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Re: gprof 2.14 glitches w/ powerpc elf binaries


From: Njuguna Njoroge
Subject: Re: gprof 2.14 glitches w/ powerpc elf binaries
Date: Mon, 23 Aug 2004 14:27:39 -0700

Hi again,

Actually, the gprof version is 2.15 (I forgot to type "./" to ensure I was using
the one in the current path). In any case, it still functions like 2.14..
Nju

Njuguna Njoroge wrote:

> Hi Nick,
>
> Thanks for your response. Please see below.
>
> Nju
> Nick Clifton wrote:
>
> > Hi Njuguna,
> >
> > > I observed that when gprof is executed w/ binaries targeted for the
> > > PowerPC (like the 405D in our case), gprof inserts functions in the
> > > histogram and call graph tables that were never executed (i.e. their
> > > addresses were never referenced).
> >
> > Actually what is probably happening is that gprof is trying to associate
> > an address in the executable with a function name, and it is this
> > association which is going wrong.  So for example the reference to
> > Letext is probably actually an address somewhere near the end of the
> > .text section.
> >
> > This problem may be a result of the debug format that you are using, or
> > it may be a binutils problem.  You could try upgrading to the 2.15
> > binutils release
>
> The 2.15 release uses gprof version 2.14, which is the same one that came with
> the binutils 2.14 release.
>
> > and if that does not work then you could try the
> > current mainline sources in the CVS repository.
>
> > Failing that if you can
> > create a small, reproducible test case we can try to look into it ourselves.
>
> Do you want the binary (elf file) and the gmon.out file?
>
> > Cheers
> >    Nick





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