1 files changed, 47 insertions, 6 deletions

diff --git a/erts/include/internal/sparc32/atomic.h b/erts/include/internal/sparc32/atomic.h
index d6fdc6b2a4..2a995d4465 100644
--- a/erts/include/internal/sparc32/atomic.h
+++ b/erts/include/internal/sparc32/atomic.h
@@ -1,19 +1,19 @@
 /* 
  * %CopyrightBegin%
- * 
- * Copyright Ericsson AB 2005-2009. All Rights Reserved.
- * 
+ *
+ * Copyright Ericsson AB 2005-2010. All Rights Reserved.
+ *
  * The contents of this file are subject to the Erlang Public License,
  * Version 1.1, (the "License"); you may not use this file except in
  * compliance with the License. You should have received a copy of the
  * Erlang Public License along with this software. If not, it can be
  * retrieved online at http://www.erlang.org/.
- * 
+ *
  * Software distributed under the License is distributed on an "AS IS"
  * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
  * the License for the specific language governing rights and limitations
  * under the License.
- * 
+ *
  * %CopyrightEnd%
  */
 
@@ -28,7 +28,11 @@ typedef struct {
     volatile long counter;
 } ethr_native_atomic_t;
 
-#ifdef ETHR_TRY_INLINE_FUNCS
+#define ETHR_MEMORY_BARRIER \
+  __asm__ __volatile__("membar #LoadLoad|#LoadStore|#StoreLoad|#StoreStore\n" \
+                       : : : "memory")
+
+#if defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHR_AUX_IMPL__)
 
 #if defined(__arch64__)
 #define CASX "casx"
@@ -168,6 +172,43 @@ ethr_native_atomic_cmpxchg(ethr_native_atomic_t *var, long new, long old)
     return new;
 }
 
+/*
+ * Atomic ops with at least specified barriers.
+ */
+
+static ETHR_INLINE long
+ethr_native_atomic_read_acqb(ethr_native_atomic_t *var)
+{
+    long res = ethr_native_atomic_read(var);
+    __asm__ __volatile__("membar #StoreLoad|#StoreStore");
+    return res;
+}
+
+static ETHR_INLINE void
+ethr_native_atomic_set_relb(ethr_native_atomic_t *var, long i)
+{
+    __asm__ __volatile__("membar #LoadStore|#StoreStore");
+    ethr_native_atomic_set(var, i);
+}
+
+static ETHR_INLINE void
+ethr_native_atomic_dec_relb(ethr_native_atomic_t *var)
+{
+    __asm__ __volatile__("membar #LoadStore|#StoreStore");
+    ethr_native_atomic_dec(var);
+}
+
+static ETHR_INLINE long
+ethr_native_atomic_dec_return_relb(ethr_native_atomic_t *var)
+{
+    __asm__ __volatile__("membar #LoadStore|#StoreStore");
+    return ethr_native_atomic_dec_return(var);
+}
+
+#define ethr_native_atomic_inc_return_acqb ethr_native_atomic_inc_return
+#define ethr_native_atomic_cmpxchg_acqb ethr_native_atomic_cmpxchg
+#define ethr_native_atomic_cmpxchg_relb ethr_native_atomic_cmpxchg
+
 #endif /* ETHR_TRY_INLINE_FUNCS */
 
 #endif /* ETHR_SPARC32_ATOMIC_H */