llext support native_sim

[hblcd]

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[hblcd]

I found that in native_sim, dlopen, dlsym, dlclose and dlerror could replace the functions of llext. But, when use dlopen open the lib, the pathname should be the path of the host. There's a problem with that, cannot verify the correctness of llext.

[teburd]

I found that in native_sim, dlopen, dlsym, dlclose and dlerror could replace the functions of llext. But, when use dlopen open the lib, the pathname should be the path of the host. There's a problem with that, cannot verify the correctness of llext.

That seems like a good way to perhaps try and do things. I'm not super familiar with native_sim and all its wonderful ways of operating but absolutely dlopen is along the same lines.

It will not use the elf parsing and symbolic linking written in zephyr though. To do that I suspect you'd need to support x86_64/x86 and perhaps aarch64 for native_sim usages on typical x86 machines and perhaps some others.