640 has support for cross-endian(procnto/libc/pipe/mq), but you'll also need
a head version of io-net for this to work.  The io-net source is scheduled
to be available soon.

Chris

-----Original Message-----
From: Thomas Fletcher [mailto:thomasf@qnx.com] 
Sent: Thursday, October 18, 2007 11:08 AM
To: ostech-core_os
Subject: RE: Message passing between x86 and PPC

 

> -----Original Message-----
> From: Geneviève Bastien [mailto:genevieve.bastien@versatic.net] 
> Sent: October 18, 2007 10:53 AM
> To: ostech-core_os
> Subject: Message passing between x86 and PPC
> 
> Hi,
> 
> We've been designing a whole project with QNX message-passing 
> as the main IPC scheme.  The problem is: our processes are on 
> different machines with x86 and PowerPC processors.
> 
> And I just found out that cross-endian QNET does not work!!
> 
> Is there any workaround, that does not involve tcp/ip?
> What about the package filesystem?  The conclusion of this 
> article seems promising... 
> http://www.qnx.com/developers/articles/article_920_1.html

That isn't what you are looking for.  The package filesystem only
re-directs clients to get content based on their CPU architecture.
Since it relies on the base messaging to work, it means that it
will fets an mipsle 'ls' instead of an x86 'ls' binary assuming 
it was hosted on an x86(le) machine.

There is some work in the HEAD version that allows the base cross
endian messages to start flowing through, but this hasn't been
released as product yet ... though you can pick it up and start
working with it now if you want.

Hope this helps,
 Thomas

_______________________________________________
OSTech
http://community.qnx.com/sf/go/post2106