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-rw-r--r--src/tools/rustfmt/tests/target/cfg_if/detect/os/freebsd/arm.rs27
1 files changed, 27 insertions, 0 deletions
diff --git a/src/tools/rustfmt/tests/target/cfg_if/detect/os/freebsd/arm.rs b/src/tools/rustfmt/tests/target/cfg_if/detect/os/freebsd/arm.rs
new file mode 100644
index 000000000..7aa040075
--- /dev/null
+++ b/src/tools/rustfmt/tests/target/cfg_if/detect/os/freebsd/arm.rs
@@ -0,0 +1,27 @@
+//! Run-time feature detection for ARM on FreeBSD
+
+use super::auxvec;
+use crate::detect::{cache, Feature};
+
+/// Performs run-time feature detection.
+#[inline]
+pub fn check_for(x: Feature) -> bool {
+ cache::test(x as u32, detect_features)
+}
+
+/// Try to read the features from the auxiliary vector
+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);
+ }
+ };
+
+ if let Ok(auxv) = auxvec::auxv() {
+ enable_feature(&mut value, Feature::neon, auxv.hwcap & 0x00001000 != 0);
+ enable_feature(&mut value, Feature::pmull, auxv.hwcap2 & 0x00000002 != 0);
+ return value;
+ }
+ value
+}