make compilable on stable

1 files changed, 28 insertions, 4 deletions

diff --git a/src/interrupt.rs b/src/interrupt.rs
index 5880dd4..b57cc80 100644
--- a/src/interrupt.rs
+++ b/src/interrupt.rs
@@ -1,16 +1,29 @@
 //! Interrupts
 
+// use core::sync::atomic::{self, Ordering};
+
 pub use bare_metal::{CriticalSection, Mutex, Nr};
 
 /// Disables all interrupts
 #[inline]
 pub fn disable() {
     match () {
-        #[cfg(target_arch = "arm")]
+        #[cfg(all(cortex_m, feature = "inline-asm"))]
         () => unsafe {
             asm!("cpsid i" ::: "memory" : "volatile");
         },
-        #[cfg(not(target_arch = "arm"))]
+
+        #[cfg(all(cortex_m, not(feature = "inline-asm")))]
+        () => unsafe {
+            extern "C" {
+                fn __cpsid();
+            }
+
+            // XXX do we need a explicit compiler barrier here?
+            __cpsid();
+        },
+
+        #[cfg(not(cortex_m))]
         () => unimplemented!(),
     }
 }
@@ -23,9 +36,20 @@ pub fn disable() {
 #[inline]
 pub unsafe fn enable() {
     match () {
-        #[cfg(target_arch = "arm")]
+        #[cfg(all(cortex_m, feature = "inline-asm"))]
         () => asm!("cpsie i" ::: "memory" : "volatile"),
-        #[cfg(not(target_arch = "arm"))]
+
+        #[cfg(all(cortex_m, not(feature = "inline-asm")))]
+        () => {
+            extern "C" {
+                fn __cpsie();
+            }
+
+            // XXX do we need a explicit compiler barrier here?
+            __cpsie();
+        }
+
+        #[cfg(not(cortex_m))]
         () => unimplemented!(),
     }
 }