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Re: [Qemu-devel] [ARM] Cortex-R4F and VFP3-D16


From: Fabien Chouteau
Subject: Re: [Qemu-devel] [ARM] Cortex-R4F and VFP3-D16
Date: Fri, 01 Mar 2013 14:43:14 +0100
User-agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130221 Thunderbird/17.0.3

On 03/01/2013 01:16 PM, Peter Maydell wrote:
> On 1 March 2013 12:07, Fabien Chouteau <address@hidden> wrote:
>> On 03/01/2013 12:32 PM, Peter Maydell wrote:
>>> I think you're going to have to run some tests on the actual
>>> hardware to find out what it really does. Specifically, what
>>> are the values of SCTLR.IE, SCTLR.EE and CPSR.E when you think
>>> you're in big-endian mode?
>
>> SCTLR.IE and SCTLR.EE are both set to 1 at reset and the values
>> cannot be changed.
>
> OK, that makes sense. I think it's also a reasonable thing for
> qemu's qemu-system-armeb model to present to the guest. Have
> you changed QEMU to report IE and EE (and CPSR.E) as always-1,
> or does your guest code just not look at them?
>

We don't look at them so I didn't change anything, but maybe it's not
difficult to do.

-- 
Fabien Chouteau



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