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Re: [Qemu-devel] [PATCH] Initial support for ARM V6-M


From: Alex Rozenman
Subject: Re: [Qemu-devel] [PATCH] Initial support for ARM V6-M
Date: Wed, 14 Dec 2011 11:55:45 +0200

Hi Peter,

Thank you for your comments. I'll submit a new patch. I am aware about
architertural differences b/w v6m and v7m, but many of them is less
relevant for the existing QEMU code (pririty bits for example).

Alex

On Tue, 2011-12-13 at 18:05 +0000, Peter Maydell wrote:
> On 13 December 2011 17:44, Alex Rozenman <address@hidden> wrote:
> > Please review / discuss / push the attched patch. It adds initial support
> > for V6-M for ARM and Cortex-M0.
> 
> Please don't submit patches as attachments (see
> http://wiki.qemu.org/Contribute/SubmitAPatch for other guidelines).
> 
> This patch is pretty obviously missing a lot. It makes a start
> on the instruction level differences, but v6M also has significant
> differences in the memory mapped system registers, NVIC, etc, which
> this patch doesn't try to deal with at all. There are also CPU model
> differences like a smaller set of supported MRS/MSR system registers,
> the M0 having no user/privileged distinction, etc.
> 
> The v6M Architecture Reference Manual has an appendix on the v6M-to-v7M
> differences, which is probably worth working through.
> 
> -- PMM





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