native gcc for ml403(ppc405)

Hello!

I am working on a ml403 with virtex 4 (ppc405).
I have build me a crosscompiler and  a glibc with crosstool.
This worked very good for me...(i can compile 2.4 and 2.6 kernel...)

Now i would like to build a native compiler for the ppc405...(I need  
a native compiler for a few things that are hard to crosscompile.)

Is it possible to compile the binutils and gcc with my crosscompiler  
to get a native compiler??

Yes anybody done this already? How?

Thanks in Advanced!

Nice greetings
Robert Zach
robert.zach@wvnet.at