Given that we do not know what you changed to support cross-compiling to ARM, it is difficult to give precise information. Perhaps the easiest way would be to remove and re-install gcc using yum.

If you want to do it by hand, you probably need to remove the --target option from gcc configuration, and reinstall the correct bintools and GNU assembler for Fedora 9 and point to the correct crt0 unless you used newlib.