/*
Organization: Technical University of Kosice (TUKE),
Department: Department of Electronics and Multimedia Telecommunications (DEMT/KEMT), 
Faculties: Faculty of Electrical Engineering and Informatics (FEI),
Feld of study: 	Informatics,
Study program: Computer Networks,  
School year: 3., Bachelor study, 2020/2021,
Author:  Marek Rohac -- MR,
Compiler: Winlibs GCC -- MinGW-W64 x86_64-posix-seh, built by Brecht Sanders, v. 10.2.0,
					  -- also works with GCC 11.1.0
*/

#define __USE_MINGW_ANSI_STDIO
#include<stdio.h>
#include<windows.h>
#include <stdint.h>	

//cpucyclesS -- Start measure	
static __inline__ uint64_t cpucyclesS(){
	unsigned cycles_low, cycles_high;
	__asm__ volatile ("CPUID\n\t"
		"RDTSC\n\t"
		"mov %%edx, %0\n\t"
		"mov %%eax, %1\n\t": "=r" (cycles_high), "=r" (cycles_low)::
		"%rax", "%rbx", "%rcx", "%rdx");
	return  (((uint64_t)cycles_high << 32) | cycles_low );
}
//cpucyclesE -- End measure
static __inline__ uint64_t  cpucyclesE(){
	unsigned cycles_low, cycles_high;
	__asm__ volatile ("RDTSCP\n\t"
		"mov %%edx, %0\n\t"
		"mov %%eax, %1\n\t"
		"CPUID\n\t": "=r" (cycles_high), "=r" (cycles_low)::
		"%rax", "%rbx", "%rcx", "%rdx");
	return (((uint64_t)cycles_high << 32) | cycles_low );
}
int main(){
	uint64_t tick,tock;		
	tick=cpucyclesS();
	Sleep(1000);
	tock= cpucyclesE() - tick; 
	printf("Executed: %llu cycles\n", tock);
	return 0;
}