Re: elf core file format for powerpc

[rahul dev <rahul_dev_agg@yahoo.co.in>]

--- On Wed, 6/2/08, Jim Blandy <jimb@red-bean.com> wrote:

> From: Jim Blandy <jimb@red-bean.com>
> Subject: Re: elf core file format for powerpc
> To: rahul_dev_agg@yahoo.co.in
> Cc: gdb@sourceware.org
> Date: Wednesday, 6 February, 2008, 1:01 AM
> On Feb 5, 2008 5:42 AM, rahul dev
> <rahul_dev_agg@yahoo.co.in> wrote:
> > Can you please provide some information on the note
> section and how to
> > add register values in the note section. I searched a
> lot on the net
> > but failed to get any useful information.
> 
> One source of confusion is that the code in GDB that
> operates on BFD
> sections is actually accessing ELF notes, in a PT_NOTE
> program header.
>  When BFD opens a core file and sees a PT_NOTE program
> header, it
> turns each note into a "section" with a known
> name.  See
> bfd/elfcore.h:elf_core_file_p, and uses of
> _bfd_elfcore_make_pseudosection.
> 
> So if you want to produce .reg "sections" that
> GDB can see, you need
> to produce PT_NOTE program headers in your core that BFD
> will
> recognize.
Thanks Jim. I can read the registers from the core file now.
Also, readelf was really useful, specially the -n option.


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