28 lines
816 B
Rust
28 lines
816 B
Rust
//! Run-time feature detection for PowerPC on FreeBSD.
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use crate::detect::{Feature, cache};
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use super::{auxvec};
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/// Performs run-time feature detection.
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#[inline]
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pub fn check_for(x: Feature) -> bool {
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cache::test(x as u32, detect_features)
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}
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fn detect_features() -> cache::Initializer {
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let mut value = cache::Initializer::default();
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let enable_feature = |value: &mut cache::Initializer, f, enable| {
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if enable {
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value.set(f as u32);
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}
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};
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if let Ok(auxv) = auxvec::auxv() {
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enable_feature(&mut value, Feature::altivec, auxv.hwcap & 0x10000000 != 0);
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enable_feature(&mut value, Feature::vsx, auxv.hwcap & 0x00000080 != 0);
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enable_feature(&mut value, Feature::power8, auxv.hwcap2 & 0x80000000 != 0);
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return value;
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}
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value
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}
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