Add support for OP_GENERIC_CLASS_INIT

[mono.git] / mono / utils / atomic.h

diff --git a/mono/utils/atomic.h b/mono/utils/atomic.h
index 79455ad9c435c889e9e2fb5289b365324b2ea29a..306800cfe1d0cd508a56aafb341a815de949233c 100755 (executable)
--- a/mono/utils/atomic.h
+++ b/mono/utils/atomic.h
@@ -79,13 +79,48 @@ static inline gint64 InterlockedAdd64(volatile gint64 *dest, gint64 add)
 }
 #endif
 
+#if defined(_MSC_VER) && !defined(InterlockedAdd)
+/* MSVC before 2013 only defines InterlockedAdd* for the Itanium architecture */
+static inline gint32 InterlockedAdd(volatile gint32 *dest, gint32 add)
+{
+       return InterlockedExchangeAdd (dest, add) + add;
+}
+#endif
+
+#if defined(_MSC_VER) && !defined(InterlockedAdd64)
+#if defined(InterlockedExchangeAdd64)
+/* This may be defined only on amd64 */
+static inline gint64 InterlockedAdd64(volatile gint64 *dest, gint64 add)
+{
+       return InterlockedExchangeAdd64 (dest, add) + add;
+}
+#else
+static inline gint64 InterlockedAdd64(volatile gint64 *dest, gint64 add)
+{
+       gint64 prev_value;
+
+       do {
+               prev_value = *dest;
+       } while (prev_value != InterlockedCompareExchange64(dest, prev_value + add, prev_value));
+
+       return prev_value + add;
+}
+#endif
+#endif
+
+#ifdef HOST_WIN32
+#define TO_INTERLOCKED_ARGP(ptr) ((volatile LONG*)(ptr))
+#else
+#define TO_INTERLOCKED_ARGP(ptr) (ptr)
+#endif
+
 /* And now for some dirty hacks... The Windows API doesn't
  * provide any useful primitives for this (other than getting
  * into architecture-specific madness), so use CAS. */
 
 static inline gint32 InterlockedRead(volatile gint32 *src)
 {
-       return InterlockedCompareExchange (src, 0, 0);
+       return InterlockedCompareExchange (TO_INTERLOCKED_ARGP (src), 0, 0);
 }
 
 static inline gint64 InterlockedRead64(volatile gint64 *src)
@@ -100,7 +135,7 @@ static inline gpointer InterlockedReadPointer(volatile gpointer *src)
 
 static inline void InterlockedWrite(volatile gint32 *dst, gint32 val)
 {
-       InterlockedExchange (dst, val);
+       InterlockedExchange (TO_INTERLOCKED_ARGP (dst), val);
 }
 
 static inline void InterlockedWrite64(volatile gint64 *dst, gint64 val)
@@ -138,7 +173,7 @@ static inline void InterlockedWrite16(volatile gint16 *dst, gint16 val)
        mono_memory_barrier ();
 }
 
-/* Prefer GCC atomic ops if the target supports it (see configure.in). */
+/* Prefer GCC atomic ops if the target supports it (see configure.ac). */
 #elif defined(USE_GCC_ATOMIC_OPS)
 
 static inline gint32 InterlockedCompareExchange(volatile gint32 *dest,