Re: [avr-gcc-list] Structs in program memory.

[Svein E. Seldal]

Christian Ludlam wrote:
> On 27 Apr E. Weddington wrote:
>
> Not necessarily; if the compiler is aware of the different address spaces it
> can change the generated code to access it correctly. Then it would just be a
> case of changing the declaration of a variable - the C code to read it would
> be the same.
>
> This has come up several times, but AFAIK nobody's seriously considered
> adding this support to gcc (it's probably a lot of work). I think some other
> compilers were going to, though - sdcc springs to mind, but it seems the AVR
> port is no longer maintained :-/

Yep... The following post to the gcc mailing list is still unresponded:

http://gcc.gnu.org/ml/gcc/2004-01/msg01734.html

And its not the first time i've tried. Actually the not the first time 
around:

http://gcc.gnu.org/ml/gcc/2002-12/msg01033.html
http://gcc.gnu.org/ml/gcc/2003-03/msg01422.html

My conclusion is that it seems like the developers have problems 
comprehending a target that only has a couple of kb's of flash/memory. 
And to have more than one dataspace, e.g. flash and data, seems also to 
be an rather seldom feature.


Svein