V3 ABI

Thu Nov 30 20:44:00 GMT 2000

>>>>> "Bryce" == Bryce McKinlay <bryce@albatross.co.nz> writes:

Bryce> Any thoughts on how bitmap marking is going to work with the V3
Bryce> ABI? I think we'll have to move the class descriptor to the
Bryce> class object itself, since there wont be a convenient vtable
Bryce> slot, afaik. This means changes to the GC...
This is Alex's call.
One option might be to put the bitmap and the class pointer at offsets
-1 and -2.
Another would be to add dummy virtual functions to Object whose slots
would then be abused to hold the extra info. This is relatively ugly.
Tom