aarch64_features - A feature detector for AArch64 features, i.e., FEAT_LSE?

This crate checks for available features of AArch64 cores. It strives for completeness instead of focussing on the favorite features.

Update your Cargo.toml

[dependencies]
aarch64_features = "0.1.0"

and then

use aarch64_features::{check_features, Feature};

fn main() {
  let features = check_features();

  if features.contains(&Feature::FEAT_LSE) {
    println!("happy");
  }
}

supported configurations:

• Linux AArch64
• macOS AArch64
• Windows on ARM.
• anything not AArch64

Caveats

The Linux kernel only exposes a subset of the features to userspace, see feature registers. The set changes over time and thus the reported features of this crate can change between versions.

If you have a big little cpu, then you may want to pin the current thread.

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.