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From: Michael Snyder <msnyder@redhat.com>
To: Richard.Earnshaw@arm.com
Cc: gdb-patches@sources.redhat.com, cagney@redhat.com, kevinb@redhat.com
Subject: Re: [RFA] arm_store_return_value, big-endian (take 2)
Date: Mon, 11 Nov 2002 17:15:00 -0000	[thread overview]
Message-ID: <3DCFFBBC.715EB616@redhat.com> (raw)
In-Reply-To: <200211091154.gA9BsbA06176@pc960.cambridge.arm.com>

Richard Earnshaw wrote:
> 
> > Richard Earnshaw wrote:
> > >
> > > > Richard Earnshaw wrote:
> > > > >
> > > > > Leaving asside the issue of the correctness of write_register_bytes (note
> > > > > to self, must finish of my register patches), I don't think this is
> > > > > correct -- in fact, I think it's also wrong for little-endian as well.
> > > > >
> > > > > What should happen is that the smaller-than-word value should be
> > > > > zero/sign-extended to 32 bits and then the whole thing stored in A1_REGNUM.
> > > >
> > > > Ah, thanks.  OK, how about this?
> > > >
> > > > 2002-11-06  Michael Snyder  <msnyder@redhat.com>
> > > >
> > > >       * arm-tdep.c (arm_store_return_value): Handle offset of
> > > >       small types on big-endian machines.
> > >
> > > And for little-endian?
> >
> > It already works for little-endian.  I've tested this with
> > arm-sim, arm-sim/-mbig-endian, and arm-sim/-mthumb.
> 
> But it's not zero/sign extending properly for little-endian, so garbage is
> remaining in the top part of A1

Ah; well, I didn't make it any worse!  ;-)
Can I leave that detail for someone else, and just
submit this minor improvement?


  reply	other threads:[~2002-11-11 21:17 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-11-06 16:27 Michael Snyder
2002-11-07 10:26 ` Richard Earnshaw
2002-11-07 19:19   ` Michael Snyder
2002-11-08  1:57     ` Richard Earnshaw
2002-11-08 11:37       ` Michael Snyder
2002-11-09  3:55         ` Richard Earnshaw
2002-11-11 17:15           ` Michael Snyder [this message]
2002-11-12  2:15             ` Richard Earnshaw
2002-11-13 11:55               ` Michael Snyder
2002-11-14  1:50                 ` Richard Earnshaw

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