Xtensa support

[Witold Baryluk]

On Friday, 12 April 2024 at 23:16:30 UTC, Matheus Catarino wrote:
> I've recently seen support for different target architectures 
> on https://explore.dgnu.org .
> What is the status of Xtensa and xtensa-gnu support? Does it 
> support both xtensa ABIs (call0 and windowed)?
>
> Currently there is a need to fork espressif/LLVM when using 
> ldc2. Is there a need to fork espressif crosstool-ng?

It works. I successfully run some code with it with gdc few years 
ago. But it is quite a work to map either reimplement all the 
APIs in D from scratch, but it can be done as everything is 
reasonably well documented. I only had some basic stuff like 
GPIO, very little of timers and uart. So no networking (possibly, 
but I had other things to do) or other stuff.


As of xtensa ABIs I have no idea. I didn't use espressif 
libraries. Should be possible tho.