Subject: Re: Kernel Debugging / kgdb support
To: Ross Harvey <firstname.lastname@example.org>
From: Jason Thorpe <email@example.com>
Date: 01/14/2000 16:48:52
On Thu, 13 Jan 2000 17:23:25 -0800 (PST)
Ross Harvey <firstname.lastname@example.org> wrote:
> > > Is there hope of this being fixed eventually, or are the trap frames
> > > processor-variant-specific (which would make this more difficult, I
> > > assume)?
> > It's possible to fix; look at alpha/alpha/db_trace.c. Someone just has
> > to do it.
> I dimly recall a recent mention of a ddb(4) traceback-over-trap problem.
Nonono.... I mean, look at db_trace.c -- it's possible to fix gdb :-)
> Now, gdb is another story. It has no concept of trap frames, and locore.s
> has some hand stabs that, at one point, worked a bit, sometimes. It really
> needs to be fixed in gdb. Unfortunately, the technique used by ddb(4)
> doesn't translate well to gdb, but if anyone wants to work on it I will
> spell out what's required.
Well... as long as GDB knows the value of the Xent* symbols... wouldn't that
work? That is, in fact, how the DDB traceback used to work until you changed
it to just use a pointer to the entry points themselves.
-- Jason R. Thorpe <email@example.com>