[OpenBIOS] ppc64 MMU issues

[Andreas Färber]

Am 16.11.2010 um 00:02 schrieb Segher Boessenkool:

>>> Who's responsible for r2 setup - GCC-generated code or QEMU?
>>
>> r2 contains the GOT IIRC. But for ABI questions, it's probably best  
>> to
>> consult Segher :). Unless I'm completely mistaken, usually the loader
>> initializes r2, so in this case the asm code needs to set it up  
>> properly.
>
> Depends what you call "loader".  Usually your crt1 equivalent sets  
> GPR2.
> It is probably a good idea to set it in all exception handlers as well
> (if they want to call C code, or need it otherwise).

But set it to what value? :)

Andreas