http://bugs.winehq.org/show_bug.cgi?id=16666
--- Comment #3 from Austin English austinenglish@gmail.com 2009-01-03 23:04:14 --- http://www.openbsd.org/cgi-bin/man.cgi?query=mmap&apropos=0&sektion=...
There's a flag, MAP_FIXED, that prohibits mmap from selecting a different address than specified.