xnu-1228.5.18.tar.gz

[apple/xnu.git] / osfmk / kern / simple_lock.h

diff --git a/osfmk/kern/simple_lock.h b/osfmk/kern/simple_lock.h
index 4c9c7b31c2c860a31e7af569a15b06b582e7bc63..57621217596d9780a7f9790a7c1d1c52ad1ce4e7 100644 (file)
--- a/osfmk/kern/simple_lock.h
+++ b/osfmk/kern/simple_lock.h
@@ -102,25 +102,41 @@ extern unsigned int               hw_lock_held(
 __BEGIN_DECLS
 
 extern uint32_t                        hw_atomic_add(
-                                       uint32_t        *dest,
+                                       volatile uint32_t       *dest,
                                        uint32_t        delt);
 
 extern uint32_t                        hw_atomic_sub(
-                                       uint32_t        *dest,
+                                       volatile uint32_t       *dest,
                                        uint32_t        delt);
 
 extern uint32_t                        hw_atomic_or(
-                                       uint32_t        *dest,
+                                       volatile uint32_t       *dest,
                                        uint32_t        mask);
 
 extern uint32_t                        hw_atomic_and(
-                                       uint32_t        *dest,
+                                       volatile uint32_t       *dest,
+                                       uint32_t        mask);
+
+/*
+ * Variant of hw_atomic_or which doesn't return a value; potentially
+ * more efficient on some platforms.
+ */
+extern void                    hw_atomic_or_noret(
+                                       volatile uint32_t       *dest,
+                                       uint32_t        mask);
+/*
+ * Variant of hw_atomic_and which doesn't return a value; potentially
+ * more efficient on some platforms.
+ */
+
+extern void                    hw_atomic_and_noret(
+                                       volatile uint32_t       *dest,
                                        uint32_t        mask);
 
 extern uint32_t                        hw_compare_and_store(
                                        uint32_t        oldval,
                                        uint32_t        newval,
-                                       uint32_t        *dest);
+                                       volatile uint32_t       *dest);
 
 extern void                    hw_queue_atomic(
                                        unsigned int *anchor,