On the airbus the aircraft continiously monitors the actual ground speed and winds aloft, and makes comparisons to the pilot input of the runways surface wind.
The aircrafts autothrust system automatically keeps a safe speed for you in "mild/moderate" conditions, severe conditions (windshear warning) - go around.
I have previously talked about the airbus autothrust in more details in this post that was along similar lines
http://www.pprune.org/ubb/NonCGI/For...ML/001938.html
