[fpc-devel] embedded arm port

[Bernd Mueller]

octal at pocketmt.com wrote:
> Just a question Florian,
> 
> C offers the "volatile" attribute to mention that a variable can change
> value without source code intervention (for example a variable that maps
> to a port register).

I had all sort of troubles with gcc aggressive optimizations. Two years 
ago, I had to initialize SDRAMS for an ARM9 board for example. This 
requiered to write sequences of data to the same memory address (among 
other things). I finally wrote this part in assembler, because I could 
not get this work with gcc.

Something like the fpc {$OPTIMIZATION xxx} compiler switch, which allows 
to enable/disable optimizations on procedure level, would have helped me 
a lot. As far as I know, gcc has not such a thing.

Regards, Bernd.