Revert cortex-m #605
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Revert cortex-m #605
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The cortex-m crate in the master branch is 0.7.4 plus a bunch of fixes that have never been released. Some of them are breaking changes and so will never be released. We cannot 'just' release a cortex-m 0.8 with them in because that is ecosystem shattering - the crate contains a 'links=' attribute, and a bunch of no_mangle functions, so you cannot have two versions in the same dependency tree. Instead, there is a 0.7.x branch. This was taken before the cortex-m-rt crate move. It has cortex-m 0.7.7, which has been published. This commit just deletes the cortex-m folder and replaces it with the contents of the cortex-m crate as found on the the 0.7.x branch. If you want to pick up the changes that have just been deleted, cherry- pick them into a new branch and open a PR to merge them into here. Breaking changes for cortex-m into master will no longer be accepted. Sorry.
Binaries are unchanged.
I don't want lints that tell me to fix things that don't work in the MSRV. Unfortunately I also have to unify the MSRV for cortex-m and cortex-m-rt, raising the cortex-m MSRV to 1.61.
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OK, that seems to be a genuine bug that this annoying new feature caught.
Will avoid a bunch of clippy warnings that are hard to get rid of in both the MSRV and latest stable.
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mbrossard
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Jul 19, 2025
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| println!("cargo:rustc-check-cfg=cfg(armv6m)"); | ||
| println!("cargo:rustc-check-cfg=cfg(armv7em)"); | ||
| println!("cargo:rustc-check-cfg=cfg(armv7m)"); | ||
| println!("cargo:rustc-check-cfg=cfg(armv7m)"); | ||
| println!("cargo:rustc-check-cfg=cfg(armv8m)"); |
| //! ## `critical-section-single-core` | ||
| //! | ||
| //! This feature enables a [`critical-section`](https://github.com/rust-embedded/critical-section) | ||
| //! implementation suitable for single-core targets, based on disabling interrupts globally. | ||
| //! | ||
| //! It is **unsound** to enable it on multi-core targets or for code running in unprivileged mode, | ||
| //! and may cause functional problems in systems where some interrupts must not be disabled | ||
| //! and may cause functional problems in systems where some interrupts must be not be disabled |
| //! # Minimum Supported Rust Version (MSRV) | ||
| //! | ||
| //! This crate is guaranteed to compile on stable Rust 1.61 and up. It *might* | ||
| //! This crate is guaranteed to compile on stable Rust 1.59 and up. It *might* |
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We are in a mess. This PR attempts to fix it.
The cortex-m crate in the master branch is 0.7.4 plus a bunch of fixes that have never been released. Some of them are breaking changes and so will never be released. We cannot 'just' release a cortex-m 0.8 with them in because that is ecosystem shattering - the crate contains a
'links=' attribute, and a bunch of no_mangle functions, so you cannot have two versions in the same dependency tree.
Instead, there is a 0.7.x branch. This was taken before the cortex-m-rt crate move. It has cortex-m 0.7.7, which has been published.
This commit just deletes the
cortex-mfolder and replaces it with the contents of thecortex-mcrate as found on the the 0.7.x branch.If you want to pick up the changes that have just been deleted, cherry-pick them into a new branch and open a PR to merge them into here.
Breaking changes for cortex-m into master will no longer be accepted.
Sorry.