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Re: [patch/rfa] allow unwinding "past main" for dummy frames
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