Messages in this thread | | | Date | Tue, 16 Sep 2003 19:07:23 -0700 | From | Ben Johnson <> | Subject | Re: linear vs. logical addresses? how does cpu interpret kernel addrs? |
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On Tue, Sep 16, 2003 at 06:55:27PM -0700, William Lee Irwin III wrote: > > You might want to look at intel's volume 3. They're kept in dedicated > registers separate from the pointers and used implicitly.
I've been reading that too. The problem is that there are 6 segment selector registers and 4 of those are just for data segments. several data segments can be in use simultaneously and they can all have different base addresses and limits. The only explanation I've found so far about how a segment is chosen is that logical address are 48-bit values, yet sizeof(void *) == 4. there has to be a way to match up pointer with a segment, but I am unable to find it so far. (maybe I need a nap.)
Thanks,
- Ben
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