Re: [Tinycc-devel] TCC code generation for a stack based VM

[Fabrice Bellard]

Zoltán Lörincz wrote:
> Hello Fabrice,
>
> thank you  for your answer.
>
> First of all i have a question related to the mailing list administration. 
> I made a subscribtion a few days ago (saturday last week) at
> http://lists.nongnu.org/mailman/listinfo/tinycc-devel but didn't got
> any confirmation up to now.
> Does this usually takes so long? or  something went wrong with my subscribtion?

I don't know. I did nothing to the mailing list.

> Regarding to the VM i think i will take your suggestion.
>
> I don't have to handle the floating/double types so the instruction
> set will be reduced with a few instruction.

OK.

> But i have to implement a custom byte format wich has to be simpler
> than the elf format.

If your format has to be more complicated than a raw binary image (which 
TCC can generate with the -Wl,--oformat,binary option), then use ELF. 
Almost no patches will be needed in TinyCC for that (just a few constant 
definitions and a few lines to handle the relocation, see the ARM and 
c67 cases), and loading an ELF file is very easy. Anyway, as TinyCC uses 
ELF to store the generated binary in memory, you _must_ implement an ELF 
support even if it is not your format on the disk.

Fabrice.