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

[Filip Navara <filip.navara@gmail.com>]

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On Fri, Dec 18, 2009 at 11:05 PM, Aurelien Jarno <aurelien@aurel32.net>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 <uli@suse.de> and Vincent Sanders <
> vince@kyllikki.org>.
> >
> > 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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