private void setFirstFrame() {
    Prototype desc = method.getEffectiveDescriptor();
    startFrames[0].initializeWithParameters(desc.getParameterTypes());
    startFrames[0].setImmutable();
  }
Sets up the first frame to contain all the incoming parameters in locals.
android/android_framework/dex-maker/src/main/java/com/android/dx/cf/code/Ropper.java