Merge branch 'rickard/atomics-api/OTP-9014' into major

* rickard/atomics-api/OTP-9014:
  Use new atomic API in runtime system
  Improve ethread atomics

1 files changed, 115 insertions, 0 deletions

diff --git a/erts/include/internal/sparc32/ethr_membar.h b/erts/include/internal/sparc32/ethr_membar.h
new file mode 100644
index 0000000000..6eb0c5a1d6
--- /dev/null
+++ b/erts/include/internal/sparc32/ethr_membar.h
@@ -0,0 +1,115 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2011. 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%
+ */
+
+/*
+ * Description: Memory barriers for sparc-v9
+ * Author: Rickard Green
+ */
+
+#ifndef ETHR_SPARC_V9_MEMBAR_H__
+#define ETHR_SPARC_V9_MEMBAR_H__
+
+#if defined(ETHR_SPARC_TSO)
+/* --- Total Store Order ------------------------------------------------ */
+
+#define ETHR_LoadLoad	0
+#define ETHR_LoadStore	0
+#define ETHR_StoreLoad	1
+#define ETHR_StoreStore	0
+
+static __inline__ void
+ethr_cb__(void)
+{
+    __asm__ __volatile__ ("" : : : "memory");
+}
+
+static __inline__ void
+ethr_StoreLoad__(void)
+{
+    __asm__ __volatile__ ("membar #StoreLoad\n\t" : : : "memory");
+}
+
+
+#define ETHR_MEMBAR(B) \
+  ETHR_CHOOSE_EXPR((B), ethr_StoreLoad__(), ethr_cb__())
+
+#elif defined(ETHR_SPARC_PSO)
+/* --- Partial Store Order ---------------------------------------------- */
+
+#define ETHR_LoadLoad	0
+#define ETHR_LoadStore	0
+#define ETHR_StoreLoad	(1 << 0)
+#define ETHR_StoreStore	(1 << 1)
+
+static __inline__ void
+ethr_cb__(void)
+{
+    __asm__ __volatile__ ("" : : : "memory");
+}
+
+static __inline__ void
+ethr_StoreLoad__(void)
+{
+    __asm__ __volatile__ ("membar #StoreLoad\n\t" : : : "memory");
+}
+
+static __inline__ void
+ethr_StoreStore__(void)
+{
+    __asm__ __volatile__ ("membar #StoreStore\n\t" : : : "memory");
+}
+
+static __inline__ void
+ethr_StoreLoad_StoreStore__(void)
+{
+    __asm__ __volatile__ ("membar #StoreLoad|StoreStore\n\t" : : : "memory");
+}
+
+#define ETHR_MEMBAR(B)					\
+  ETHR_CHOOSE_EXPR(					\
+      (B) == ETHR_StoreLoad,				\
+      ethr_StoreLoad__(),				\
+      ETHR_CHOOSE_EXPR(					\
+	  (B) == ETHR_StoreStore,			\
+	  ethr_StoreStore__(),				\
+	  ETHR_CHOOSE_EXPR(				\
+	      (B) == (ETHR_StoreLoad|ETHR_StoreStore),	\
+	      ethr_StoreLoad_StoreStore__(),		\
+	      ethr_cb__())))
+
+#elif defined(ETHR_SPARC_RMO)
+/* --- Relaxed Memory Order --------------------------------------------- */
+
+#  define ETHR_LoadLoad #LoadLoad
+#  define ETHR_LoadStore #LoadStore
+#  define ETHR_StoreLoad #StoreLoad
+#  define ETHR_StoreStore #StoreStore
+
+#  define ETHR_MEMBAR_AUX__(B) \
+     __asm__ __volatile__("membar " #B "\n\t" : : : "memory")
+
+#  define ETHR_MEMBAR(B) ETHR_MEMBAR_AUX__(B)
+
+#else
+
+#  error "No memory order defined"
+
+#endif
+
+#endif