Author: Bas Hamstra
Date: 00:46:10 01/17/03
Go up one level in this thread
On January 17, 2003 at 01:01:32, Matt Taylor wrote: >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. I guess this will suspend interrupts during the time the routine runs? Yes, why not. You will get famous if you find a way to outperform rotated bitboards, you know. Gerd was already close, he is a real pioneer. Bas.
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