C++ for embedded systems

[Nick.SIMON at syntegra.bt.co.uk]

Are you really sure you want objects in ROM?  They wouldn't be very
dynamic!

We have lots of C++ code running under RTEMS.  Objects, whether globals or
dynamically created, live in RAM.  Snags are:

(1)  Performance is hit somewhat by the code inserted by the compiler for
exception handling.  I haven't found a way to disable this in the compiler,
else we'd do without EH for performance's sake.
(2)  Link has to be just right (in file linkcmds in the BSP) if you want
global constructors to work.


Best wishes 


-- Nick Simon 

> -----Original Message-----
> From: Peter Mueller [mailto:peter.o.mueller at gmx.de]
> Sent: 08 October 2000 19:18
> To: rtems-users at oarcorp.com
> Subject: C++ for embedded systems
> 
> 
> Hi all,
> 
> I want to use C++ for a project with rtems. No problems so 
> far. But I'm
> very unsure how to write C++ code that "is good" for embedded systems.
> Especially how can I make sure an object can be in ROM ...
> 
> Is there a good tutorial ... about points to consider when 
> developing C++
> code for embedded systems. I know the EC++ stuff a bit, but 
> there is no info
> about my memory related questions there.
> 
> Thanks,
> Peter
> 
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