From: tixy@linaro.org (Jon Medhurst (Tixy))
To: linux-arm-kernel@lists.infradead.org
Subject: alignment handler instruction endian-ness
Date: Fri, 19 Jul 2013 15:01:02 +0100 [thread overview]
Message-ID: <1374242462.3406.59.camel@linaro1.home> (raw)
In-Reply-To: <20130719110947.GD24642@n2100.arm.linux.org.uk>
On Fri, 2013-07-19 at 12:09 +0100, Russell King - ARM Linux wrote:
> On Fri, Jul 19, 2013 at 11:58:45AM +0100, Ben Dooks wrote:
> > I ran in to an issue with the alignment handler when running BE8 where
> > it loads instructions and fails to swap.
> >
> > Is there a better way of swapping instructions for ARM when loading
> > from arbitrary places? Have I missed any other places this could happen?
>
> Maybe we need a macro which deals with this automatically?
Like the stuff in arch/arm/include/asm/opcodes.h ?
> arm_instr_to_cpu(x)
> thumb_instr_to_cpu(x)
>
> These should probably make use of the swab*() macros when an endian swap
> is needed.
>
> > The following patch is my first attempt at solving the problem for the
> > alignment handler:
>
> I'd suggest checking this with sparse too - you have some type errors here.
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2013-07-19 14:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-19 10:58 alignment handler instruction endian-ness Ben Dooks
2013-07-19 11:09 ` Russell King - ARM Linux
2013-07-19 11:26 ` Ben Dooks
2013-07-19 12:15 ` Ben Dooks
2013-07-19 12:32 ` Russell King - ARM Linux
2013-07-19 13:19 ` Ben Dooks
2013-07-22 18:31 ` Nicolas Pitre
2013-07-22 18:34 ` Ben Dooks
2013-07-19 14:01 ` Jon Medhurst (Tixy) [this message]
2013-07-19 14:05 ` Russell King - ARM Linux
2013-07-19 14:50 ` Ben Dooks
2013-07-19 14:56 ` Russell King - ARM Linux
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