phoenix_hardware_rdtsc.cpp

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/***************************************
        Auteur : Pierre Aubert
        Mail : pierre.aubert@lapp.in2p3.fr
        Licence : CeCILL-C
****************************************/
 
 
#include "phoenix_hardware_rdtsc.h"
 
#ifdef __i386

extern long unsigned int phoenix_hardware_rdtsc(void) {
        long unsigned int x;
        __asm__ volatile ("rdtsc" : "=A" (x));
        return x;
}
#elif defined __amd64

extern long unsigned int phoenix_hardware_rdtsc(void) {
        long unsigned int a, d;
        __asm__ volatile ("rdtsc" : "=a" (a), "=d" (d));
        return (d<<32) | a;
}
#endif