qemu-system-ppc -cpu G2leGP3 crashes

qemu crashes when running qemu-system-ppc -cpu G2leGP3 :

qemu-system-ppc -cpu G2leGP3
Error: Trying to register SPR 1013 (3f5) twice !

qemu-system-ppc -version
QEMU emulator version 2.0.50, Copyright (c) 2003-2008 Fabrice Bellard

On 5/19/2014 1:16 PM, Brandon Williams wrote:
> Public bug reported:
> 
> qemu crashes when running qemu-system-ppc -cpu G2leGP3 :
> 
> qemu-system-ppc -cpu G2leGP3
> Error: Trying to register SPR 1013 (3f5) twice !
> 
> qemu-system-ppc -version
> QEMU emulator version 2.0.50, Copyright (c) 2003-2008 Fabrice Bellard
> 
> ** Affects: qemu
>      Importance: Undecided
>          Status: New
> 

This was introduced in this commit:

2bc173224adc0fc318f2bd6fcf65dfdbc7d51123 is the first bad commit
commit 2bc173224adc0fc318f2bd6fcf65dfdbc7d51123
Author: Fabien Chouteau <email address hidden>
Date:   Wed Apr 3 04:03:38 2013 +0000

    PPC: Add breakpoint registers for 603 and e300

    Signed-off-by: Fabien Chouteau <email address hidden>



I removed the redundant registrations from the gen_spr_G2 function and it is not longer throwing that error. However, now I just get a black QEMU screen.  Any suggestions on the best way to debug this?

"qemu-system-ppc -cpu G2leGP3 -d int" gives me:

Raise exception at fff085a0 => 0000004e (40000)

I think the G2leGP3 CPU has been fixed with this commit here:
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=3ade1a055c9ac6c351
and it also seems to work fine when you use the "-M prep" machine type.