From: Spencer Oliver <spen@spen-soft.co.uk>
To: Jonathan Larmour <jifl@jifvik.org>
Cc: ecos-patches@ecos.sourceware.org
Subject: Re: [PATCH] when building using binutils 2.20:
Date: Mon, 17 May 2010 09:36:00 -0000 [thread overview]
Message-ID: <4BF10E21.8090706@spen-soft.co.uk> (raw)
In-Reply-To: <4BEAA92D.70807@jifvik.org>
On 12/05/2010 14:12, Jonathan Larmour wrote:
> Spencer Oliver wrote:
>> cortex_m3: buildfix for binutils 2.20
>>
>> when building using binutils 2.20:
>> - swi inst now requires an argument.
>> - msr psp,sp is not allowed.
>
> I'll let Nick handle this patch, but I'm curious (and admittedly haven't
> looked at the ISA details): it seems strange that msr psp,sp used to be
> allowed but now is not - and presumably it worked on the hardware
> otherwise it wouldn't have been in the port.
>
msr psp,sp used to be allowed, but the armv7m trm states it as undefined
behaviour - this seems to match what realview does.
Cheers
Spen
next prev parent reply other threads:[~2010-05-17 9:36 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-04 12:27 Spencer Oliver
2010-05-12 13:12 ` Jonathan Larmour
2010-05-17 7:23 ` Daniel Néri
2010-05-17 9:36 ` Spencer Oliver [this message]
2010-05-17 11:40 ` Nick Garnett
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