rdtsc.d

module rdtsc;

import std.stdio;
import std.stdint;

int64_t ReadTimeStampCounter() {
  version (X86_64) {
    asm {
      naked;
      rdtsc;
      shl RDX, 32;
      or RAX, RDX;
      ret;
    }
  }
  else version (X86) {
    asm {
      naked;
      rdtsc;
      ret;
    }
  }
  return 0;
}

int main() {
  writeln(ReadTimeStampCounter());
  return 0;
}