Hi John Paul, On Sat, Feb 12, 2022 at 7:27 PM John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx> wrote: > > Is there any particular reason why this list excludes MIPS*, i386, big-endian > PowerPC and SPARC targets which are already supported by the Rust programming > language? The variations we have so far were intended to showcase the Rust support in several major architectures, rather than cover everything. But as long as LLVM (& the kernel, i.e. ClangBuiltLinux) supports the target (and as long there are no compiler/toolchain issues), you should be able to try it. > Are the arch/$ARCH/rust/target.json files everything that's needed for supporting > the other targets? Mostly -- there is also `rust/kernel/c_types.rs` and you may need to tweak `rust/compiler_builtins.rs`, but not much more. Note that for the target spec files, the short-term plan is to generate dynamically the target spec file according to what the architecture requests, instead of using these static files. Longer term, we need a Rust-stable way to setup custom targets from upstream `rustc` (though it is not clear yet how it will look, e.g. it could be via command-line flags). Cheers, Miguel
