Messages in this thread | | | Date | Tue, 22 Jul 2003 10:54:02 -0700 (PDT) | From | Davide Libenzi <> | Subject | Re: asm (lidt) question |
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On Tue, 22 Jul 2003, Richard B. Johnson wrote:
> LIDT is "load interrupt descriptor table". SIDT is "store interrupt > descriptor table". Only SIDT modifies memory. LIDT reads from memory > and puts the result into a special CPU register, therefore doesn't > modify memory.
Indeed, that why this is not really correct :
__asm__ __volatile__("lidt %0": "=m" (var));
even if it generates the same code of :
__asm__ __volatile__("lidt %0": : "m" (var));
- Davide
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