GCC c startup for no OS or an RTOS

I have a mini2440 running the NoOS/uCos2 examples using CodeWarrior, but it
looks like it will be a bit difficult to get it working with another
compiler like GCC or IAR.

There's mini2440 support in RT-Threads, but are there any other examples
using GCC that take care of the MMU, clock setup, and interrupt handling?

Thanks,
John

I also have this problem too. I want to develop under linux, and want to
compile the example codes which developed under CodeWarrior in Windows. But
a lot problem found.
Where can i find some non-os examples under linux to check whether my
cross-compile tools works?