this axis are handled by mdosbox :
zaxis = event.getAxisValue(MotionEvent.AXIS_Z);//(-1,1)
rzaxis = event.getAxisValue(MotionEvent.AXIS_RZ);//(-1,1)
xaxis = event.getAxisValue(MotionEvent.AXIS_X);//(-1,1)
yaxis = event.getAxisValue(MotionEvent.AXIS_Y);//(-1,1)
hatyaxis = event.getAxisValue(MotionEvent.AXIS_HAT_Y);//(-1,1)
hatxaxis = event.getAxisValue(MotionEvent.AXIS_HAT_X);//(-1,1)
L2axis = event.getAxisValue(MotionEvent.AXIS_LTRIGGER);//(0,1)
R2axis = event.getAxisValue(MotionEvent.AXIS_RTRIGGER);//(0,1)
brakeaxis = event.getAxisValue(MotionEvent.AXIS_BRAKE);//(0,1)
gasaxis = event.getAxisValue(MotionEvent.AXIS_GAS);//(0,1)
zaxis, rzaxis = right stick
xaxis, yaxis = left stick
hatyaxis, hatxaxis = 8 way standard gamepad, hat
L2axis, R2axis, brakeaxis, gasaxis = are converted to buttons