From: Alan Modra <amodra@bigpond.net.au>
To: Daniel Berlin <dberlin@dberlin.org>
Cc: Jim Blandy <jimb@red-bean.com>,
binutils@sourceware.org, gdb-patches@sourceware.org
Subject: Re: linker debug info editing
Date: Mon, 13 Mar 2006 20:19:00 -0000 [thread overview]
Message-ID: <20060313062335.GR6777@bubble.grove.modra.org> (raw)
In-Reply-To: <1142217868.20401.15.camel@linux.site>
On Sun, Mar 12, 2006 at 09:44:27PM -0500, Daniel Berlin wrote:
> On Fri, 2006-03-10 at 17:44 -0800, Jim Blandy wrote:
> > After you've chosen dies to delete, how do you deal with other dies
> > that refer to the deleted dies? I'm not talking about parents; I'm
> > talking about attributes whose form is DW_FORM_ref*.
>
> The only correct answer to this is "rewrite all the references all
> starting from scratch" :P
Yes, that's the conclusion I was coming to.. It's a pain. All the
offsets can change, and in some cases there can even be an increase.
eg. rewriting a DW_FORM_ref2 as a DW_FORM_ref_addr, to point
at the proper info (that for the kept function). I think all the info
is there for ld to do this, but it's quite a lot more work than I
realized. When I started, I knew more about how to do this in ld than
what actually needed doing. :)
--
Alan Modra
IBM OzLabs - Linux Technology Centre
next prev parent reply other threads:[~2006-03-13 6:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-10 19:44 Alan Modra
2006-03-10 20:06 ` James E Wilson
2006-03-10 20:16 ` Daniel Jacobowitz
2006-03-12 7:58 ` Jim Blandy
2006-03-13 12:53 ` Daniel Berlin
2006-03-13 20:19 ` Alan Modra [this message]
2006-03-14 15:10 ` Daniel Berlin
2006-03-13 4:59 ` Daniel Jacobowitz
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