[Gambas-devel] porting Gambas to pcc

[chintan rao]

Hi Benoit
On 4/19/07, Benoit Minisini <gambas at ...1...> wrote:
> On jeudi 19 avril 2007, chintan rao wrote:
> > Hi,
> > Also I would like to know how much of the porting has laready been done
> > ( I mean is there any part of the interpreter / compiler code which is
> > written for power pc architecture)
> > and what help will i get :)
> >
> > On 4/18/07, chintan rao <chintanraoh at ...176...> wrote:
> > > hi all,
> > > We ,at our college, have a power processor based server which is
> > > supposed to be used for porting applications to ppc architecture.
> > > I would like to know what  would this take to do and how feasible it is.
> > > I have got over  2 months of holidays to do this if is feasible.
> > >
> > > Chintan
> >
> Hi,
>
> There are two problems with PowerPC:
> 1) Endianness-neutral.
> 2) 64-bits.
>
> The 1) is partially implemented, but is buggy. I mean it crashes, but I could
> never debugged as I don't have a big-endian system.
>
> When generating a compiled file, the compiler writes the endianness of the CPU
> at the beginning of the file (gbc_output.c:289).
>
> When the interpreter reads this file, it has to swap things where things need
> to be swapped. This is done in the gbx_class_load.c file, from the line 356.
> This swapping process seems to need debugging.

>
> The 2) is a far more difficult work, as it needs to clean and rewrite a lot of
> things in the source code of the compiler and interpreter. Especially the
> interpreter that relies on too many places on 32 bits integers and pointers.
>
> This almost needs a new interpreter, so I don't want to do that before 2.0.
>
> Tell me what you can do, or want to do exactly.

I am interested in this .
I will need to spend some time on  ppc to answer these questions .
I will both these questions soon  after the holidays start(may be 20
days from now :( ) .
Will try to bring up this discussion again then .

>
> Thanks for your collaboration proposal!
>
> Regards,
>
> --
> Benoit Minisini

thanks for replying  :)
>
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