Re: [Qemu-devel] [Qemu-ppc] [PATCH] PPC: init_excp_7x0: fix hreset entry point.

[Alexander Graf]

On 27.03.2013, at 16:49, Fabien Chouteau wrote:

> On 03/27/2013 04:10 PM, Alexander Graf wrote:
>>> It's actually already implemented (helper_regs.h:96). The question is:
>>> what is the value of MSR[IP] at reset?
>> 
>> For 740 / 750, it's 1. All other bits are 0.
> 
> Is it true for all PPC, because MSR_EP/IP is set for all kind of CPU right 
> now.
> 
>> 
>>> Also, we might want to call hreg_store_msr() in ppc_cpu_reset() instead
>>> of just setting the value env->msr, this way we don't need
>>> hreset_excp_prefix as the MSR[IP] will be used to set the value of
>>> env->excp_prefix. Something like:
>> 
>> Sounds good :)
>> 
> 
> Alright, we can get rid of hreset_excp_prefix then.

I don't think we can get rid of the variable. G5s for example set the prefix 
through some HID register.


Alex