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Re: [patch] bfd: Core files with p_filesz < p_memsz (build-id)
On Fri, Aug 03, 2007 at 09:43:00AM +0930, Alan Modra wrote:
> Oh, I see. I was just looking at the split case. I'd say the
> non-split behaviour is a bug. A program header with p_filesz zero and
> p_memsz non-zero really ought to create a bfd section with size equal
> to p_memsz, without SEC_HAS_CONTENTS and SEC_LOAD.
>
> So I think we should apply the following, and possibly on top of this
> do something special for core files.
Yes, I agree. But keep in mind that this patch on its own is going to
lay waste to GDB's core debugging :-) It will now disassemble all
functions as zeroes.
What we really want in GDB is now a bit complicated:
- Prefer data from core file if within p_filesz.
- Prefer data from executable if between p_filesz and p_memsz.
- Show zeroes (rather than read errors) for data between p_filesz
and p_memsz if not present in the executable.
Messy...
--
Daniel Jacobowitz
CodeSourcery