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acle/ex: CLREX requires v6k

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This commit is contained in:
Jorge Aparicio 2019-02-18 17:39:29 +01:00 • committed by gnzlbg
parent 640eb3874e
commit c7bbc50568
1 changed files with 3 additions and 1 deletions
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4
library/stdarch/crates/core_arch/src/acle/ex.rs
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@ -3,8 +3,10 @@
/// Removes the exclusive lock created by LDREX
// Supported: v6, v6K, v7-M, v7-A, v7-R
// Not supported: v5, v6-M
// NOTE: there's no dedicated CLREX instruction in v6 (<v6k); to clear the exclusive monitor users
// have to do a dummy STREX operation
#[cfg(any(
all(target_feature = "v6", not(target_feature = "mclass")), // excludes v6-M
all(target_feature = "v6k", not(target_feature = "mclass")), // excludes v6-M
all(target_feature = "v7", target_feature = "mclass"), // v7-M
))]
pub unsafe fn __clrex() {