function h$clock_gettime_js(when, p_d, p_o) {
  /* XXX: guess if we have to write 64 bit values:

            alloca is often used and will give us 16 bytes
            if timespec contains two 64 bit values

          but we really should fix this by not having hsc2hs values
          from the build system leak here
   */
  var is64 = p_d.i3.length == 4 && p_o == 0;
  var o  = p_o >> 2,
      t  = Date.now ? Date.now() : new Date().getTime(),
      tf = Math.floor(t / 1000),
      tn = 1000000 * (t - (1000 * tf));
  if(is64) {
    p_d.i3[o]   = tf|0;
    p_d.i3[o+1] = 0;
    p_d.i3[o+2] = tn|0;
    p_d.i3[o+3] = 0;
  } else {
    p_d.i3[o]   = tf|0;
    p_d.i3[o+1] = tn|0;
  }
  return 0;
}
/* Hack! Supporting code for "clock" package
 * "hspec" depends on clock.
 */
function h$hs_clock_darwin_gettime(when, p_d, p_o) {
      h$clock_gettime_js(when, p_d, p_o);
}