[gambit-list] Gambit and termite on an embedded system (Nintendo DS)?

Marc Feeley feeley at iro.umontreal.ca
Thu Oct 19 09:33:26 EDT 2006


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On 19-Oct-06, at 7:19 AM, Andrew Lentvorski wrote:

> Marc Feeley wrote:
>> Andrew, that's a neat project!  For a long time I have been  
>> thinking of running Gambit "on the bare metal" and, although I  
>> have never tried to do it, the runtime system has been designed so  
>> that there are few dependencies on a specific OS.  The C code  
>> generated by the compiler is very plain (it only uses the header  
>> files limits.h, wchar.h, float.h, setjmp.h, and math.h).  The OS  
>> dependent stuff is mostly contained in the lib/os*.c files.
>
> I located main() inside gambit.h after peeling apart the  
> preprocessor stuff with -E.  This then calls ___main_char or  
> ___main_UCS_2 inside os_base.c.
>
> I need to initialize some things (interrupts, keyboard, display,  
> timers, wifi, etc.) before letting Gambit take over.  Where should  
> I hook in? Should I hook in before letting the call float through  
> to ___main_char or ___main_UCS_2, or is there somewhere else that I  
> should break out and start initializing?
>
> Thanks,
> -a

You can either add your initialization code to ___main_* in lib/ 
os_base.c , or start Gambit from your own main (see the examples in  
tests/client.c and examples/pthread to see how to do this).

Marc

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