Re: [GXemul-devel] GXemul ARM MSR fsxc patch

[Anders G. <ga...@gm...>]

Tis 2012-06-12 klockan 01:21 +0100 skrev James Peacock:
> Hello,

Hi James,

> I've been using GXemul to help develop a little project of mine and
> have noticed that the implementation of ARM MSR failed if the fields
> mask included the 's' or 'x' bits. Below is a patch to add basic
> support for these variants, which is enough to get code of the form
> 'MSR SPSR_fsxc' to run.
> 
> Also, when writing to the CPSR, the mask should be anded with
> 0xff000000 if the CPU is not in a privileged mode. I've not included
> this in the patch as it would be a much larger change the behaviour
> which I don't have the set up to test fully.

I applied the patch, and added an additional AND.

http://gxemul.svn.sourceforge.net/viewvc/gxemul?view=revision&revision=5800

I have not had time to do any stringent testing. (I tried a NetBSD/cats
5.1.2 install, which hung during disklabel. But I don't know if this was
due to the MSR instruction change.)

> GXemul has been incredibly useful. Is it still under any form of
> active development?

Not very active; development is extremely sporadic these days.


Anders