On Thu, Oct 17, 2002 at 07:58:23PM -0700, Mark Gross wrote:
> On Thursday 17 October 2002 07:12 pm, Andi Kleen wrote:
> > I want the x86 CPU error code, which often has interesting clues on the
> > problem. trapno would be useful too. I suspect other CPUs have similar
> > extended state for exceptions.
> >
> > I usually hack my kernel to printk() it, but having it in the coredump
> > would be more general and you can look at it later.
> >
> > Eventually (in a future kernel) I would love to have the exception
> > handler save the last branch debugging registers of the CPU and the let the
> > core dumper put that into the dump too. Then you could easily
> > figure out what the program did shortly before the crash.
> >
> > -Andi
>
> Having the last branch before a crash would be cool. Its easy to add note
> sections to core files. If it turns out to be useful I'm sure the GDB folks
> would support it.
Absolutely. The GDB side would be pretty easy.
-- Daniel Jacobowitz MontaVista Software Debian GNU/Linux Developer - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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