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

From: Peter Maydell
Subject: Re: [Qemu-devel] [PATCH] Initial support for ARM V6-M
Date: Tue, 13 Dec 2011 18:05:22 +0000

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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