Re: [hatari-devel] natfeats installing __NF cookie

[Eero Tamminen <oak@xxxxxxxxxxxxxx>]

Hi,

On 15.7.2022 17.34, Thorsten Otto wrote:
> On Freitag, 15. Juli 2022 16:11:20 CEST Miro Kropáček wrote:
> > with reasoning that this is a cookie meant for system usage, not user space.
>
> But thats wrong.  Although most of the NatFeats are for driver usage, not all
> them are. Things like NF_NAME, NF_STDERR are also meant to be used from user
> space.
>
> Having that said: usefulness of the __NF cookie is doubtful anyway. All
> programs (including MiNT) check for the availability by checking whether the
> NF_ID opcode throws an illegal exception.
Thanks!

Maybe you could you add some note of above also to Aranym NatFeats Wiki 
docs, and update the FreeMiNT info here ("-DARANYM" -> 
"-DWITH_NATIVE_FEATURES"):
https://github.com/aranym/aranym/wiki/natfeats-example
?


> The cookie would only make sense in
> the case of coldfire, where that opcode is
> a legal mvs instruction, but that is only
> hypothetical, because it would assume
> an emulator emulating a ColdFire.



	- Eero

> I think that cookie is just a relict from STonX, where it what first
> introduced IIRC.