least on i386)... fbsd-* changes started out as s/linux/fbsd/g and then additional changes to handle different ptrace defines among other things.. (use vfork to eliminate a race for progress group creation) reg-i386.c is generated by regdat.sh..
work w/ minor modifications to these files, so keep the history... These are stock files from GDB 6.1.1 w/ only the filename s/linux/fbsd/g