Hi Erik
The CodeWarrior macros are at a very low level. They're mainly just definitions of the bits in the MCF52235's peripheral registers.
What you need to look at is the MCF52235 Reference Manual, which is a PDF file available for download from Freescale's web site (on the MCF52235 page).
In it, you will find a complete description of the programming model for the processor, including sections on the GPIO, UARTs, etc. You should then be able to compare the register descriptions to CodeWarrior's macros.
You might also find it useful to look at a free tool called CFInit from MicroAPL. It's a graphical tool which helps you to write initialisation code for ColdFire processors. It won't give you everything you need because it's only intended for initialisation code (So, for example, it will show you how to set up a UART at 9600 baud and 1 stop bit, but not how to send and receive data). Hopefully you can relate the CodeWarrior C code which it produces to the Reference Manual and figure out the rest.
The URL is:
http://www.microapl.co.uk/CFInit/cfinit_main.html