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Date: Mon, 3 Dec 2001 08:38:22 +0200 (WET)
From: Andris Pavenis <pavenis AT lanet DOT lv>
X-Sender: pavenis AT ieva06
To: Damien Knight <spook AT kmfms DOT com>
Cc: djgpp AT delorie DOT com
Subject: Re: RDTSC ?
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On Sun, 2 Dec 2001, Damien Knight wrote:

> As I've been told, RDTSC is a feature of pentium (and up) processers that
> tracks the number of processer cycles completed since the system last
> powered up, making it useful for calculating system uptime - but more
> importantly, it can be used to test code optimization and so on.
> 
> My question : How do I get this value and use in in a DJGPP program?  If
> anyone has a function already written, that'd be great.
> 

inline long long rdtsc (void)
{
        long long result;
        asm volatile ("rdtsc" : "=A"(result));
        return result;
}