#include "stdafx.h"
#include <intrin.h>
#include <stdio.h>
#include <tchar.h>
#include <conio.h>
#include <locale.h>
#include <Windows.h>

#pragma optimize( "", off )
static inline unsigned long long rdtsc_diff_vmexit() {
	int cpuid[4];
	auto t0 = __rdtsc();
	__cpuid(cpuid, 0);
	__cpuid(cpuid, 0);
	__cpuid(cpuid, 0);
	__cpuid(cpuid, 0);
	__cpuid(cpuid, 0);
	auto t1 = __rdtsc();
	printf("%llx %llx ",t0,t1);
	return t1 - t0;
}
#pragma optimize( "", on )

int cpu_rdtsc_force_vmexit() {
	int i;
	unsigned long long avg = 0;

	unsigned long long tsc_diff;

	for (i = 0; i < 10; i++) {
		tsc_diff = rdtsc_diff_vmexit();

		printf("[%i] %llu\n", i, tsc_diff);

		avg = avg + tsc_diff;
		Sleep(500);
	}
	avg = avg / 10;

	return (avg < 1000 && avg > 0) ? FALSE : TRUE;
}


int main()
{

	if (cpu_rdtsc_force_vmexit())
		printf("detected");
	else
		printf("not detected");

	_getch();

	return 0;
}