blob: 0cfa8869887ee569a37a75a90dd8837b15ed58e5 [file] [log] [blame]
//! Run-time feature detection for MIPS on Linux.
use super::auxvec;
use crate::detect::{Feature, bit, cache};
/// Try to read the features from the auxiliary vector.
pub(crate) fn detect_features() -> cache::Initializer {
let mut value = cache::Initializer::default();
let enable_feature = |value: &mut cache::Initializer, f, enable| {
if enable {
value.set(f as u32);
}
};
// The values are part of the platform-specific [asm/hwcap.h][hwcap]
//
// [hwcap]: https://github.com/torvalds/linux/blob/master/arch/mips/include/uapi/asm/hwcap.h
if let Ok(auxv) = auxvec::auxv() {
enable_feature(&mut value, Feature::msa, bit::test(auxv.hwcap, 1));
return value;
}
value
}