Ok, I've spent a number of hours(days?) to build some more SUnits and  
create a working Alien plugin for PowerPC that at least
lets you get/put byte, short, long, and long long data  (32 bit  
based), plus call APIs that use that type of data.

At the moment Float/Double does not work because of some decisions  
about how to handle Float versus Long have not been made yet.
Therefore you cannot work with Float or Double objects.

Please find a 32bit universal plugin on the ftp site in the  
experimental folder.
http://www.smalltalkconsulting.com/squeak.html
look for the
IA32ABI.1.0.1.bundle.zip

It would be helpful if some folks could poke at things a bit  to  
understand how workable things are at the moment.

Tomorrow if time permits I'll look at structures, and I need some more  
Sunits to handle Alien objects that
embed the data in the smalltalk object, versus Alien objects that use  
malloc and then point to the malloced storage area.
Astute readers will know that Alien uses negative/positive size to  
mediate the type, and the Sunits don't attempt usage of both types yet
to ensure there is proper coverage of the plugin support code.

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John M. McIntosh <johnmci at smalltalkconsulting.com>
Corporate Smalltalk Consulting Ltd.  http://www.smalltalkconsulting.com
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