From: Guy Martin <gmsoft@tuxicoman.be>
To: "John David Anglin" <dave@hiauly1.hia.nrc.ca>
Cc: kyle@mcmartin.ca (Kyle McMartin),
dave.anglin@nrc-cnrc.gc.ca, cavokz@gmail.com,
linux-parisc@vger.kernel.org
Subject: Re: can't find a register in class 'R1_REGS' while reloading 'asm'
Date: Sun, 7 Nov 2010 17:50:42 +0100 [thread overview]
Message-ID: <20101107175042.627060c2@zombie> (raw)
In-Reply-To: <20100208032035.645A14EF1@hiauly1.hia.nrc.ca>
Any update on this ?
I'm still running into the issue with gcc 4.4.4 and linux 2.6.37-rc1.
Regards,
Guy
On Sun, 7 Feb 2010 22:20:34 -0500 (EST)
"John David Anglin" <dave@hiauly1.hia.nrc.ca> wrote:
> > On Mon, Dec 07, 2009 at 10:01:14PM -0500, John David Anglin wrote:
> > > - volatile unsigned int *a;
> > > + volatile register unsigned int *a asm ("r20") =
> > > __ldcw_align(x);
> >
> > I'm reticent about moving the assignment around the mb(), should I
> > edit this to return the assignment and apply, or apply as is?
>
> I don't believe the __ldcw_align operation involves a memory read or
> write. It's just adjusting a pointer. Thus moving it past the mb()
> shouldn't matter. That said, I been wrong before...
>
> Dave
next prev parent reply other threads:[~2010-11-07 16:50 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-07 22:35 can't find a register in class 'R1_REGS' while reloading 'asm' Domenico Andreoli
2009-12-08 1:26 ` John David Anglin
2009-12-08 3:01 ` John David Anglin
2009-12-16 3:37 ` Kyle McMartin
2009-12-16 4:16 ` John David Anglin
2010-02-07 0:23 ` Kyle McMartin
2010-02-08 3:20 ` John David Anglin
2010-11-07 16:50 ` Guy Martin [this message]
2010-11-07 18:48 ` John David Anglin
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