Re: [Qemu-devel] [PATCH] fix ARMv7 MOV R15, xxx operation

[Riihimaki Juha]

On Mar 13, 2009, at 13:52, ext Paul Brook wrote:

> On Friday 13 March 2009, Riihimaki Juha wrote:
> > The behavior of several ARM mode commands where the destination
> > register is R15 has changed in ARMv7 to mimic the behavior of the BX
> > instruction. While this calls for a little bit wider fix in the code,
> > this patch fixes the issue for the special case of MOV instruction.
>
> No. If you want to fix this, do it properly.

Would you like to give an opinion on how it should be implemented? I  
suppose changing the store_reg and gen_movl_reg_TN functions in target- 
arm/translate.c to include an extra check when destination is R15 like  
"if in ARM state and arch >= 7 then bx else..." might do the trick  
more generally but do you think it introduces the change in a too wide  
scope?

Juha