Re: [Qemu-devel] I want to add the ARMv6 instructions, who can give some advices?

[Jamie Lokier <jamie@shareable.org>]

Paul Brook wrote:
> > > Basing work on the gcc/binutils code doesn't help me either because I
> > > wrote most of that code in the first place :-)
> >
> > Since the idea is for someone else do it, that doesn't matter.
> >
> > I'm wondering why, if it were done, it would be a problem for you to
> > contribute in future in the areas which you contribute to now.
> 
> Because a large proportion of my contributions, and most of my
> interest is in this area.

Sorry, I guess my question wasn't clear.

I'm not asking why it would be a problem for you to stop contributing
to ARM support in Qemu.  That's not the meaning of my question above.
Of course it would be a problem for all of us if you had to stop.

I am asking why you think you'd have to stop contributing to the
pre-ARMv6 feature set, given that it's unrelated to the restrictions
that you're bound by.

If it's post-ARMv6 contributions that you're interested in, you can't
contribute them now or in future; so someone else contributing changes in
that area makes no difference to you.

Or does it?  That's my question; I don't see why post-ARMv6
functionality in Qemu would prevent you from contributing to the
pre-ARMv6 functionality (devices, CPU model etc.), which is the only
area you're publically able to contribute now anyway.

I realise they would overlap substantially in the code, but that
doesn't mean you have to contribute any changes or reveal any
information which depends on the ARMv6 or later documentation.

I don't see why it would make a difference to what you're able to do,
and that's why I'm asking why you think it would.

Thanks,
-- Jamie