Re: [davidm@napali.hpl.hp.com: readelf question]

[David Mosberger <davidm at napali dot hpl dot hp dot com>]

>>>>> On Tue, 17 Jun 2003 13:44:40 -0700, Roland McGrath <roland@redhat.com> said:

  Roland> The piece that still remains missing is gdb finding out
  Roland> where the DSO is, i.e. the AT_SYSINFO_EHDR value of a traced
  Roland> process.  For that, I've proposed a new /proc/PID/auxv
  Roland> virtual file and a new NT_AUXV note in core dumps (these
  Roland> match exactly what Solaris provides).

Sounds reasonable to me.  Is /proc/PID/auxv really needed, though?
Isn't it easy enough to get to the aux vector from the initial stack
pointer (which gdb could catch from /proc/PID/stat).

  Roland> I posted a patch to implement this in Linux 2.5 to lkml on
  Roland> May 15; it was met with resounding silence.

That may not mean much.  Clearly it makes no sense to implement half a
solution to the problem and given that the first half is in, I don't
expect any issues in getting the rest (or some alternative) in.

Andrew Morton is very good at collecting misc. patches, providing
feedback, and feeding them on to Linus, so you might want to talk to
him (please do cc me, too; I don't have much time to work on this
myself, but I do want to make sure the ia64 portion stays in sync).

	--david