On Mon, Apr 12, 2004 at 09:05:34PM -0400, Bradley D. LaRonde wrote:
> ----- Original Message -----
> From: "Eric Christopher" <echristo@redhat.com>
> To: "Bradley D. LaRonde" <brad@laronde.org>
> Cc: <linux-mips@linux-mips.org>
> Sent: Monday, April 12, 2004 9:02 PM
> Subject: Re: [PATCH] gcc 3.4 drops "accum" clobber, replace with "hi"
> intime.c
>
>
> > On Mon, 2004-04-12 at 17:53, Bradley D. LaRonde wrote:
> > > Uh oh, with this patch:
> > >
> > > ...
> > > time.c: In function `fixed_rate_gettimeoffset':
> > > time.c:242: error: can't find a register in class `HI_REG' while
> reloading
> > > `asm'
> > > ...
> >
> > > >
> > > > /*
> > > > * Due to possible jiffies inconsistencies, we need to check
> > > > @@ -339,7 +339,7 @@
> > > > : "r" (timerhi), "m" (timerlo),
> > > > "r" (tmp), "r" (USECS_PER_JIFFY),
> > > > "r" (USECS_PER_JIFFY_FRAC)
> > > > - : "hi", "lo", "accum");
> > > > + : "hi", "lo", "hi");
> > > > cached_quotient = quotient;
> >
> >
> > Maybe this hunk where you use "hi" twice for the same asm statement?
>
> Yeah, that's messed up, but it fails here too:
>
> @@ -242,7 +242,7 @@
> __asm__("multu %1,%2"
> : "=h" (res)
> : "r" (count), "r" (sll32_usecs_per_cycle)
> - : "lo", "accum");
> + : "lo", "hi");
Because the asm is outputting something in HI - see the =h?
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer
