Setting up ARM7 MMU using gdbinit

[Charles Steaderman]

I am developing a project using a Cirrus Logic 7312 ARM720 CPU. I would 
like to debug my code from RAM, but the executable is larger than the on 
chip SRAM. Also, the SDRAM interface does not work unless the CACHE is 
enabled (and therefore MMU enabled) (Cirrus Logic errata :-( ). 
Unfortunately, setting up the MMU requires access to Coprocessor 
register 15 (through the mcr assembly instruction). Is there a way to 
get to the coprocessor registers from the gdbinit script so that I can 
setup the MMU prior to downloading my application into the SDRAM? I have 
considered writing the mcr instruction op code in to memory and single 
stepping over the instruction, but this seems a bit painful. Any help 
would be greatly appreciated!

-- 
Charlie Steaderman
charlies@poliac.com
VP Engineering
Poliac Research Corporation
Phone: 952.707.6245
Cel: 612.242.6364