Author: Matt Taylor
Date: 22:01:32 01/16/03
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On January 16, 2003 at 00:57:20, Walter Faxon wrote: >On January 15, 2003 at 02:24:42, Matt Taylor wrote: > ><snip> >> >>MMX does hold one card though that seems to be mocking me. MMX has 8 64-bit >>registers. Integer has 8 32-bit (or 4 64-bit) registers. Hmm...I really hate >>doing this because it's -ugly-, but I think I'm going to use the stack pointer >>as an additional GPR. I will need it. >> >>-Matt > > >Surely you mean the base pointer (ebp) ?? > >-- Walter No, I'll need the base pointer too. It's legal to use the stack pointer, just ugly. Intel already thought of this -- different privilege levels use different stacks so an exception in a user program can't kill the OS. -Matt
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