Type modifier to group variables in memory

[Marc Adams <marc@xxxxxxxxxxx>]

Hi,

I am trying to find a solution to the following scenario:

I have an embedded board which has a small amount of non-volatile battery 
backed SRAM. The SRAM is used to store data during system power fail. Using 
the GCC compiler is it possible to label a variable to ensure that it is 
mapped to the battery backed memory area using a type modifier?

This is not unlike the functionality offered by the section variable 
attribute described in section 5.31 of the GCC manual. Unfortunatley the to 
use the section variable attribute the data must be initialized. As I need 
to retain data during system power fail the variables can not be initialized.

Any ideas on this would be greatly appreciated. I am developing in C using 
GCC as a cross compiler for a MCF5206e.

Regards

Marc


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