From: Daniel Jacobowitz <drow@false.org>
To: Randolph Chung <randolph@tausq.org>
Cc: gdb-patches@sources.redhat.com
Subject: Re: [patch/rfa] allow unwinding "past main" for dummy frames
Date: Mon, 06 Dec 2004 15:35:00 -0000 [thread overview]
Message-ID: <20041206144326.GB14232@nevyn.them.org> (raw)
In-Reply-To: <20041206045933.GG6359@tausq.org>
On Sun, Dec 05, 2004 at 08:59:33PM -0800, Randolph Chung wrote:
> > Some sense, but not good sense.
> >
> > Can we edit the space registers ourselves? If so, why don't we rely on
> > that? I'm not talking about the call, just the return. So generate a
> > call to __gcc_plt_call with a return address anywhere you please, and
> > after the dummy call when we restore the saved regcache the space
> > registers will be right again. So you could just use _start.
>
> the problem is precisely that ... the register that we need to restore
> (pcsqh/pcsqt) cannot be written to by gdb :(
"can not" is a funny thing. Can it be written by userspace? If so,
you could synthesize an update onto the stack and execute that, but I
agree that's unnecessarily messy.
Patch is OK, but definitely needs a comment. And the comment should
mention HP/UX specifically.
--
Daniel Jacobowitz
next prev parent reply other threads:[~2004-12-06 14:43 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-06 3:31 Randolph Chung
2004-12-06 3:45 ` Daniel Jacobowitz
2004-12-06 4:27 ` Randolph Chung
2004-12-06 4:59 ` Daniel Jacobowitz
2004-12-06 6:22 ` Randolph Chung
2004-12-06 15:35 ` Daniel Jacobowitz [this message]
2004-12-06 16:54 ` Randolph Chung
2004-12-08 3:27 ` Randolph Chung
2004-12-06 14:11 ` Randolph Chung
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20041206144326.GB14232@nevyn.them.org \
--to=drow@false.org \
--cc=gdb-patches@sources.redhat.com \
--cc=randolph@tausq.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox