| 1 | /// Hook into .init_array to enable LSE atomic operations at startup, if |
| 2 | /// supported. |
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| 3 | #[cfg (all(target_arch = "aarch64" , target_os = "linux" , not(feature = "compiler-builtins-c" )))] |
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| 4 | #[used ] |
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| 5 | #[unsafe(link_section = ".init_array.90" )] |
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| 6 | static RUST_LSE_INIT: extern "C" fn() = { |
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| 7 | extern "C" fn init_lse() { |
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| 8 | use crate::arch; |
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| 9 | |
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| 10 | // This is provided by compiler-builtins::aarch64_linux. |
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| 11 | unsafe extern "C" { |
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| 12 | fn __rust_enable_lse(); |
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| 13 | } |
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| 14 | |
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| 15 | if arch::is_aarch64_feature_detected!("lse" ) { |
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| 16 | unsafe { |
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| 17 | __rust_enable_lse(); |
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| 18 | } |
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| 19 | } |
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| 20 | } |
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| 21 | init_lse |
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| 22 | }; |
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| 23 | |
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