Re: Introduction + interest in a riscv64 port of GNU Mach/Hurd

Sergey,

> Well, we generally try to stick close to the ABI that Linux uses
> (calling convention-wise), because why wouldn't we. But it's not
> automatic, the *-gnu target has to be defined in GCC & binutils, even
> if it's defined similarly to the *-linux-gnu and the BSD targets. See
> gcc:gcc/config/aarch64/aarch64-gnu.h for example. So we need to submit
> our target upstream either way. (And there's no default Mach ABI, but
> there are targets for GNU/Hurd systems on various architectures.)

Since GCC 16, there is actually a riscv64-gnu target upstream [1]. LLVM 
also introduced a riscv64-gnu target not too later [2].

[1]: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=869f2ab30ad53033ad6ac82569d74ce3a99fe510
[2]: https://github.com/llvm/llvm-project/pull/157212

Hakan