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std_detect: Add pauth-lr aarch64 target feature

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Add feature detection for aarch64 FEAT_PAuth_LR.
There is currently no Linux cpuinfo support so the OS-specific lines are
commented out.
This commit is contained in:
Kajetan Puchalski 2024-10-16 13:47:47 +01:00 • committed by Amanieu d'Antras
parent 49e52f3657
commit 168479a4a5
3 changed files with 8 additions and 0 deletions
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3
library/stdarch/crates/std_detect/src/detect/arch/aarch64.rs
View file

@ -51,6 +51,7 @@ features! {
/// * `"mte"` - FEAT_MTE & FEAT_MTE2
/// * `"paca"` - FEAT_PAuth (address authentication)
/// * `"pacg"` - FEAT_Pauth (generic authentication)
/// * `"pauth-lr"` - FEAT_PAuth_LR
/// * `"pmull"` - FEAT_PMULL
/// * `"rand"` - FEAT_RNG
/// * `"rcpc"` - FEAT_LRCPC
@ -184,6 +185,8 @@ features! {
/// FEAT_PAuth (address authentication)
@FEATURE: #[stable(feature = "simd_aarch64", since = "1.60.0")] pacg: "pacg";
/// FEAT_PAuth (generic authentication)
@FEATURE: #[unstable(feature = "stdarch_aarch64_feature_detection", issue = "127764")] pauth_lr: "pauth-lr";
/// FEAT_PAuth_LR
@FEATURE: #[stable(feature = "simd_aarch64", since = "1.60.0")] rand: "rand";
/// FEAT_RNG (Random Number Generator)
@FEATURE: #[stable(feature = "simd_aarch64", since = "1.60.0")] rcpc: "rcpc";

4
library/stdarch/crates/std_detect/src/detect/os/linux/aarch64.rs
View file

@ -140,6 +140,7 @@ struct AtHwcap {
smesf8fma: bool,
smesf8dp4: bool,
smesf8dp2: bool,
// pauthlr: bool,
}
impl From<auxvec::AuxVec> for AtHwcap {
@ -243,6 +244,7 @@ impl From<auxvec::AuxVec> for AtHwcap {
smesf8fma: bit::test(auxv.hwcap2, 60),
smesf8dp4: bit::test(auxv.hwcap2, 61),
smesf8dp2: bit::test(auxv.hwcap2, 62),
// pauthlr: bit::test(auxv.hwcap2, ??),
}
}
}
@ -353,6 +355,7 @@ impl From<super::cpuinfo::CpuInfo> for AtHwcap {
smesf8fma: f.has("smesf8fma"),
smesf8dp4: f.has("smesf8dp4"),
smesf8dp2: f.has("smesf8dp2"),
// pauthlr: f.has("pauthlr"),
}
}
}
@ -413,6 +416,7 @@ impl AtHwcap {
enable_feature(Feature::sb, self.sb);
enable_feature(Feature::paca, self.paca);
enable_feature(Feature::pacg, self.pacg);
// enable_feature(Feature::pauth_lr, self.pauthlr);
enable_feature(Feature::dpb, self.dcpop);
enable_feature(Feature::dpb2, self.dcpodp);
enable_feature(Feature::rand, self.rng);

1
library/stdarch/crates/std_detect/tests/cpu-detection.rs
View file

@ -83,6 +83,7 @@ fn aarch64_linux() {
println!("sb: {}", is_aarch64_feature_detected!("sb"));
println!("paca: {}", is_aarch64_feature_detected!("paca"));
println!("pacg: {}", is_aarch64_feature_detected!("pacg"));
// println!("pauth-lr: {}", is_aarch64_feature_detected!("pauth-lr"));
println!("dpb: {}", is_aarch64_feature_detected!("dpb"));
println!("dpb2: {}", is_aarch64_feature_detected!("dpb2"));
println!("sve-b16b16: {}", is_aarch64_feature_detected!("sve-b16b16"));