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Re: 64 bit addressing

Now that the G5 has 64-bit addressing, how do you build your code to
use 64-bit pointers with GCC3.3 (so that 'struct foo * bar' is an 8
byte pointer)?

You should take a look at the white papers on Apple's website dealing
with the G5 processor and the PowerMac architecture. I think your
questions will be answered there.

Unless I missed something, the white papers don't answer that question.

One compiler option is listed to force "long long" G5 support, but no mention of enabling 64-bit pointers. Other questions:

What system APIs have changed?
Can I malloc a 5GB buffer?
Can I mmap a 9GB file or do I need to map smaller (< 32-bit) portions of it?
Can I build an application that runs in both 32 and 64-bit modes? Or should
we put 2 executables within our bundle instead?
Will Carbon & Cocoa APIs be updated with 64-bit pointer support? QuickTime? Quartz?

Panther won't be shipping for quite a while, though, so I suspect this sort of information will be forthcoming. It seems to me that the vast majority of apps should remain 32-bit unless there's a serious reason to move to 64.

-Eric

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Eric Shapiro email@hidden
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