case 0: val = NEVER; break;
case 1: val = values[0]; break;
default: val = runtime.newArrayNoCopyLight(values);
}
if (data.parent != context.getFiberCurrentThread()) throw runtime.newFiberError("fiber called across threads");
if (currentFiberData.prev != null) {
// new fiber should answer to current prev and this fiber is marked as transferred
data.prev = currentFiberData.prev;
currentFiberData.prev = null;