Re: [Qemu-devel] Multi heterogenous CPU archs for SoC sim?

[Andreas Färber]

Am 25.05.2011 um 20:44 schrieb Greg McGary:

> I would like to create a QEMU model of an SoC that has several CPU  
> cores having different architectures.  I'm guessing this can be done.

In theory, many things are possible. In practice, it's a matter of  
manhours you're willing to invest. Without further details on your SoC  
it's hard to provide a useful answer.

An SoC with mixed ARM Cortex-M4 and Cortex-M0, for instance, may be  
much easier to accomplish than mixing architectures with differing  
endianness and especially bitness. That will likely involve compiling  
for ceil(bitness) - since I don't see how linking hw/*.o compiled for  
diffent bit-widths would work - and making sure any lower-bitness  
architectures continue to work, while probably dropping in overall  
performance...

Andreas