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

[Lluís]

Blue Swirl writes:

> On Wed, May 25, 2011 at 10:20 PM, Peter Maydell
> <address@hidden> wrote:
>> On 25 May 2011 19:44, Greg McGary <address@hidden> wrote:
>>> 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.
>> 
>> It's not supported currently as far as I'm aware. There was
>> at least one paper at the QEMU Forum earlier this year describing
>> an approach to multi-CPU environments (embedding QEMU into a
>> SystemC world) that basically saved and restored all QEMU's
>> global variables every time it switched cores...
>> 
>> It would be good if it was supported in QEMU proper, but I
>> suspect you may be in for some large-scale restructuring work.

> One of the long standing goals for QEMU has been to be able to use a
> single executable to emulate multiple architectures. I think for
> example the lines like
> #define cpu_init cpu_sparc_init
> #define cpu_exec cpu_sparc_exec
> etc. stand for this purpose, so there has been some consideration for this.

Nicely handling per-arch functions would be one of the benefits of using
C++ in QEMU (I know, it's sufficient but not necessary). What were the
conclusions regarding such a change?


Lluis

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