[OpenBIOS] PPC: QEMU breaks static variables in OpenBIOS

[Tarl Neustaedter]

On 2013-Jan-2 16:35 , Mark Cave-Ayland wrote:
>
>
> Thanks for the response. The existing comments in 
> arch/ppc/qemu/start.S suggest that we have a 1MB space at the top of 
> (physical) RAM which we could use for this:
>
>         /* Memory map:
>          *
>          * Top +-------------------------+
>          *     |                         |
>          *     | ROM into RAM (1 MB)     |
>          *     |                         | 


Ah. That suggests that qemu expects the PROM code to copy itself lock, 
stock and barrel (code, text, and data) from ROM into memory and then 
jump into the the copied code. That way you wouldn't need to separately 
relocate your .text section.