[OpenBIOS] toke core dumps

Prasanna Kumar pras_iitb at yahoo.com
Thu Oct 6 07:22:00 CEST 2005

Hi Stefan,

Thanks a lot for your reply and fixing the problem.

--- Stefan Reinauer <stepan at openbios.org> wrote:

> Hi Prasana,
> thanks a lot for your bug report. It's nice to see
> that toke is widely used nowadays and I'm glad if we
can get
> the last few bugs out of it.

Yea sure Stefan.
> > If the msb of *opc is set 1(Value >0 0x8yyy), the
> offs
> > gets changed to ffff8yyy. 
> > 
> > Changing offs to u16 and receive_offset returning
> > value of u16 type would solve the problem. Change
> the
> > prototype for receive_offset in emit.h as well.
> I've changed the code in a slightly different way,
> doing  the same thing though. 
> > - Create a fcode source file with around 7000
> >   variables.
> Are you sure you mean variables? A single FCode
> program has a limitation
> of 2048 variables due to the space reserved for them
> (Local FCode
> numbers go from 0x800 to 0xfff). 

I just wanted to show that if the offset reaches >7fff
bytes, this problem occurs. I didn't check if the
local FCode numbers got repeated or not. 

> The problem you described occurs though if your
> bytecode size exceeds
> 0x7fff bytes. 
> I fixed this in openbios--main--patch-21. Now you
> get an error message
> if you exceed the maximum word count and
> case..endcase constructs are
> working for code larger than 32KB ;-)

Thank you Stefan.
> You can also download toke-0.6.9 in a bit.
Sure. Will be waiting for it.


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