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64 bit addressing

Subject: 64 bit addressing
From: Mike Vannorsdel <email@hidden>
Date: Fri, 27 Jun 2003 20:05:08 -0600

I haven't seen this asked yet nor did I find it in the archives, so sorry if it's been covered.

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)?

If you already have a 32-bit addressed binary, how will the G5 deal with it and what penalties/problems will be encountered vs. 64-bit?

How does this all apply to KEXTs; are they required to be 64-bit or is 32-bit ok?
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