Re: Building for custom 68k or ColdFire board without OS?

[Toralf Lund <toralf at procaptura dot com>]

> On 2003/09/10 at 01:50 Toralf Lund wrote:
>
>  
>
> > I'm looking for a new way to build the software running on a custom I/O 
> > board we are producing, which is based on the MC68010. The board has no 
> > separate OS; our software calls some very simple routines built into the 
> > "Bug ROM" on the unit, but is otherwise fully self-contained. The 
> > software is traditionally compiled and linked on another 68k-based board 
> > running the OS-9 operating system. Some more details:
> >
> >    
> [Lots of stuff snipped]
>
> I ported code written for OS-9 K&R compiler first to CrossCode (Added ANSI prototypes etc.)
> and then recently to gcc.
Good to hear that someone else has done the same thing. Some questions 
related to this:

  1. Was any assembler involved?
  2. How do you handle the output files? I need to find out how to
     change my loader to support COFF or ELF instead of OS-9 module
     format...
  3. Are you using the ColdFire processor? Would you recommend it?


> I would strongly recommend that you get the patched version that
> supports the __interrupt__ attribute. 
>  
What exactly are its benefits?

> There are gcc 2.95.3 with these patches floating around as well as gcc 3.0.something. I think the
> person who added these patches are trying to have them incorporated into the main branch with
> version 3.4.
>  
Another question is what compiler version to use. I'm currently trying 
2.95.3, but have also downloaded 3.3.something...

> Below are the instructions for getting the patched 3.0 version from CVS. AFAICR the I below stands
> for Peter Baradas.
>
> Regards
>   Anton Erasmus
>
> **** Instructions to get m68k patched gcc sources ****
>  


------
Want more information?  See the CrossGCC FAQ, http://www.objsw.com/CrossGCC/
Want to unsubscribe? Send a note to crossgcc-unsubscribe@sources.redhat.com