[Pythonmac-SIG] Off subject? can OSX developer tools be used to create "Classic"

[Doug Wyatt]

On Wednesday, July 25, 2001, at 04:52 AM, Jack Jansen wrote:
>> I don't know any reason why filters couldn't be written to convert
>> object file formats, or a new backend written for gcc+ld to write
>> PEF/CFM objects for Classic, but I haven't heard that any such tools
>> are in the works from Apple or anyone else. (I'm sure Apple doesn't
>> want to step on Metrowerks toes too much!)
>
> If I understand correctly it's not only the object file format that is
> different but also the subroutine calling conventions. At least, I 
> think that
> that is what all the OSX CFM<->MachO glue stuff is converting.

The function calling conventions look pretty darned similar.  First 
argument and return value is r3, second argument is r4, etc.

I think the differences have more to do with CFM's assumptions about 
RTOC, which comes into play with UPP's etc ...

Doug

--
Doug Wyatt
work:  dwyatt@apple.com  (CoreAudio)
personal:  doug@sonosphere.com   http://www.sonosphere.com

"Premature optimization is the root of all evil."
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