Re: I query about quality of SuperH-port of newlib

On Wed, Oct 17, 2018 at 11:47 AM Johann-Tobias Schäg <[email protected]>
wrote:

> Hello,
>
> I am looking for a demonstration idea for the "new" J-Core cpu
> architecture which is actually just open source implementation of a
> slightly modified SuperH (whose patents expired).
> I was thinking about porting eLua which depends on newlib.
> What SH versions do you support?
> (SH1, SH2, SH3, SH4, SH2a)
>

I've been able to use Newlib just fine on SH-2 (Sega Saturn, no MMU).
Though, 90% of the functionality from Newlib is beyond the scope of the
hardware.


> If not what would be necessary to port it to J2 (being SH2 + new atomic
> CAS Instruction + back ported shift instructions from SH3)
> Does newlib depend on features which require an mmu?
>

Please correct me if I'm wrong, but there's a way to override syscalls,
specifically *sbrk()?

Sincerely Johann-Tobias Schäg
>
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