[PATCHSET] Reintroduce targetrustm hooks

[Iain Buclaw]

Excerpts from Arthur Cohen's message of September 7, 2023 3:41 pm:
> Alright, was not expecting to mess up this patchset so bad so here we go:
> 
> This patchset reintroduces proper targetrustm hooks without the old
> problematic mess of macros we had, which had been removed for the first
> merge of gccrs upstream.
> 
> Tested on x86-64 GNU Linux, and has also been present in our development
> repository for a long time - added by this pull-request from Iain [1]
> which was merged in October 2022.
> 
> Ok for trunk?
> 
> [PATCH 01/14] rust: Add skeleton support and documentation for
> [PATCH 02/14] rust: Reintroduce TARGET_RUST_CPU_INFO hook
> [PATCH 03/14] rust: Reintroduce TARGET_RUST_OS_INFO hook
> [PATCH 04/14] rust: Implement TARGET_RUST_CPU_INFO for i[34567]86-*-*
> [PATCH 05/14] rust: Implement TARGET_RUST_OS_INFO for *-*-darwin*
> [PATCH 06/14] rust: Implement TARGET_RUST_OS_INFO for *-*-freebsd*
> [PATCH 07/14] rust: Implement TARGET_RUST_OS_INFO for *-*-netbsd*
> [PATCH 08/14] rust: Implement TARGET_RUST_OS_INFO for *-*-openbsd*
> [PATCH 09/14] rust: Implement TARGET_RUST_OS_INFO for *-*-solaris2*.
> [PATCH 10/14] rust: Implement TARGET_RUST_OS_INFO for *-*-dragonfly*
> [PATCH 11/14] rust: Implement TARGET_RUST_OS_INFO for *-*-vxworks*
> [PATCH 12/14] rust: Implement TARGET_RUST_OS_INFO for *-*-fuchsia*.
> [PATCH 13/14] rust: Implement TARGET_RUST_OS_INFO for
> [PATCH 14/14] rust: Implement TARGET_RUST_OS_INFO for *-*-*linux*.
> 

Thanks for eventually getting round to this.

As the co-author of this patch series, I'm not going to look at it.

FWIW, these being Rust-specific target changes isolated to just
Rust-specific files, you should have the automony to commit without
needing any request for review - at least this is my understanding when
have made D-specific target changes in the past that have not touched
common back-end headers.

I'll let someone else confirm and check over the shared parts touched by
the patch however.

For reviewers, this is pretty much a mirror of the D front-end's CPU and
OS-specific target hooks (D has built-in version identifiers, not
built-in attributes, but both Rust and D are otherwise the same in the
kind of information exposed by them).

> [1]: https://github.com/Rust-GCC/gccrs/pull/1543
> 

The other GitHub pull request that added these is here.

https://github.com/Rust-GCC/gccrs/pull/1596

Regards,
Iain.