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Re: [Qemu-devel] [PATCH] target-arm: ARMv4 emulation


From: Filip Navara
Subject: Re: [Qemu-devel] [PATCH] target-arm: ARMv4 emulation
Date: Thu, 14 Jan 2010 10:55:34 +0100

On Fri, Dec 18, 2009 at 11:05 PM, Aurelien Jarno <address@hidden> wrote:
On Fri, Dec 18, 2009 at 10:32:37PM +0100, Marc Andre Tanner wrote:
> On Tue, Dec 01, 2009 at 09:41:43PM +0100, Filip Navara wrote:
> > While most of the ARMv5 instructions are backward compatible with ARMv4, there
> > are few important differences. Most notably the stack pop and load instructions
> > ignore the lowest bit, which is used by ARMv5 to switch to Thumb mode. A
> > base-updated data-abort model is used on ARM7TDMI, CP15 coprocessor is not
> > present and several instructions of later architectures are not implemented.
> >
> > This patch introduces flags for the V5, CP15 and ABORT_BU (base-updated abort
> > model) features. When V5 feature is not set the bit 0 on POP, LD and LDM of PC
> > register is ignored and doesn't swith to/from Thumb mode and several
> > instructions are treated as unimplemented (BLX, PLD, BKPT, LDRD, STRD).
> >
> > Added are processor definitions for ARM7TDMI and ARM920T.
> >
> > Based on patches by Ulrich Hecht <address@hidden> and Vincent Sanders <address@hidden>.
>
> Could someone please review + apply this patch, bonus points if it ends
> up in 0.12.
>

ARM stuff is usually reviewed by Paul Brook. Paul, do you plan to review
it, or should I do it?

I would appreciate at least some progress on this patch. A "no, because..." would be fine with me too.

Best regards,
Filip Navara

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