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Re: Meeting Agenda 2008-08-06
On Thu, 2008-08-07 at 17:42 +0200, Mark Wielaard wrote:
> On Thu, 2008-08-07 at 11:06 -0400, Andrew Cagney wrote:
> > Tom Tromey wrote:
> > > * Andrew said that our existing dwarf-reading tools are insufficient.
> > > Andrew, I forgot to ask at the meeting -- what specifically do you
> > > need that we can't readily do now?
> > >
> > readelf, and clones, are too raw. It is very hard to meaningfully map
> > the information back to the source.
> There are the dwarves tools:
> dwarves is a set of tools Iâve been writing that use the DWARF
> debugging information inserted in ELF binaries by compiler such
> as GCC , used by well known debuggers such as GDB, and more
> recent ones such as systemtap. Utilities in the dwarves suite
> include pahole, that can be used to find alignment holes in
> structs and classes in languages such as C, C++, but not limited
> to these, and other information such as CPU cacheline alignment,
> helping pack those structures to achieve more cache hits,
> codiff, a diff like tool to compare the effects changes in
> source code generate on the resulting binaries, pfunct, that can
> be used to find all sorts of information about functions,
> inlines, decisions made by the compiler about inlining, etc, to
> be continued.
That quote was from Arnaldo Carvalho de Melo btw.
He writes more about dwarves at http://oops.ghostprotocols.net:81/blog
Dwarves itself doesn't seem to have a homepage at the moment.