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

[Marc Andre Tanner <mat@brain-dump.org>]

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.

Thanks,
Marc

-- 
 Marc Andre Tanner >< http://www.brain-dump.org/ >< GPG key: CF7D56C0