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Re: [patch] userspace mcontext_t doesn't match what kernel returns
- From: Daniel Jacobowitz <dan at debian dot org>
- To: Ralf Baechle <ralf at linux-mips dot org>
- Cc: Ryan Murray <rmurray at debian dot org>, linux-mips at linux-mips dot org,libc-alpha at sources dot redhat dot com
- Date: Sun, 15 Sep 2002 15:16:13 -0400
- Subject: Re: [patch] userspace mcontext_t doesn't match what kernel returns
- References: <20020911032832.GA1500@cyberhqz.com> <20020915210601.A24588@linux-mips.org>
On Sun, Sep 15, 2002 at 09:06:01PM +0200, Ralf Baechle wrote:
> On Tue, Sep 10, 2002 at 08:28:32PM -0700, Ryan Murray wrote:
>
> > The definition of mcontext_t in sysdeps/unix/sysv/linux/mips/sys/ucontext.h
> > does not match what the kernel copies to userspace (struct sigcontext).
> > alpha, ia64, and hppa have fixed this by typedefing one to the other in
> > sys/ucontext.h The following patch accomplishes the same thing for mips.
>
> I choose to fix the kernel instead which will keep as closer to the MIPS
> ABI and also prevent having to recompile zillions of user apps. Below my
> working version of <asm/ucontext.h>.
What are the gregset_t/fpregset_t types in your working tree? There
aren't any definitions of them in the only copy of the MIPS code that I
have here, and they've had various bad definitions in glibc until
recently. They also recently changed...
[Although I think your kernel change is the right way to go, here.
Just being cautious.]
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer