get SystemTime the hacker way

gettime.c

#include <stdio.h>
// windows only
#define GetTime() (*(volatile unsigned long*)0x7ffe0014)

int main()
{
  printf("enter q to leave\n");
  do
  { //KSYSTEM_TIME
    printf("SystemTime = %ld", GetTime());
  }while('q' != getchar());
  return 0;
}