[OpenBIOS] PATCH: Implement Forth source debugger for OpenBIOS

[Mark Cave-Ayland]

Laurent Vivier wrote:

(lots cut)

> 4- forth/admin/iocontrol.fs:install-console
> 
>     ...
>     ['] io-emit to emit
>     ...
> 
> where io-emit is:
> 
> : io-emit ( char -- )
>   io-out-char c!
>   io-out-char 1 " write" stdout @ $call-method drop
> ;
> 
> And stdout is defined in arch/ppc/qemu/init.c:arch_of_init() (see 2- )

Thank you - now I see that the defer word "emit" is not set to execute 
the C function emit, which is what was confusing me.

Here's a proof-of-concept v3 patch which bounces off the forth 
trampoline in order to perform console output which seems to work for me 
on SPARC64 with VNC - please can you check it works for you?

Note this patch isn't ready to be applied yet, since I haven't had 
enough time to implement a patch to ensure that there is no speed 
penalty when debug mode is disabled.


Many thanks,

Mark.

-- 
Mark Cave-Ayland - Senior Technical Architect
PostgreSQL - PostGIS
Sirius Corporation plc - control through freedom
http://www.siriusit.co.uk
t: +44 870 608 0063

Sirius Labs: http://www.siriusit.co.uk/labs
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