Re: [Qemu-devel] Support for Wireless MMX

[Paul Brook]

On Friday 18 March 2005 10:53, Luca Piccarreta wrote:
> Hi all,
> after googling a lot I concluded (hopefully) that qemu is
> the only freely available solution for linux cross-toolchain
> (one armv5 and one iwmmxt toolchain).

The gdb simulator supports both armv5te and iwmmxt, though a small amount of 
hacking may be required to enable iwmmxt properly.

> I might have made some mistakes, but it looks like there
> are still some problems with saturated operations (qadd)
> and support for Wireless MMX is lacking.
> Am I correct?

iWMMXt is not implemented.

Saturated operations should work, though I probably haven't tested them. If 
you have examples that don't work, please let me/us know.

> Programs compiled by the armv5 toolchain seem to work
> correctly except for saturated operations, while programs
> compiled by the iwmmxt toolchain work only when no
> Wireless MMX is used and when normal ARMV5 shared
> libraries are used.
> Are both features in the future development plans?
> I saw Paul Brook post a lot of patches about ARM, so
> I'm quite confident...

I've no immediate interest in iWMMXt.

I do plan on adding support for newer arm architecture revisions, ie. armv6 
and future revisions once they're public.

System emulation would be nice, but that's definitely a secondary priority for 
me. It probably won''t happen until after armv6 is done because armv6 
standardises a lot of the MMU and system coprocessor design.

Paul