Initial commit of Open Source release

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 50 insertions, 0 deletions

diff --git a/include/compiler.h b/include/compiler.h
new file mode 100644
index 0000000..c1557d8
--- /dev/null
+++ b/include/compiler.h
@@ -0,0 +1,50 @@
+/* Copyright 2013-2014 IBM Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * 	http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ * implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __COMPILER_H
+#define __COMPILER_H
+
+#ifndef __ASSEMBLY__
+
+#include <stddef.h>
+
+/* Macros for various compiler bits and pieces */
+#define __packed		__attribute__((packed))
+#define __align(x)		__attribute__((__aligned__(x)))
+#define __unused		__attribute__((unused))
+#define __used			__attribute__((used))
+#define __section(x)		__attribute__((__section__(x)))
+#define __noreturn		__attribute__((noreturn))
+/* not __const as this has a different meaning (const) */
+#define __attrconst		__attribute__((const))
+
+#if 0 /* Provided by gcc stddef.h */
+#define offsetof(type,m)	__builtin_offsetof(type,m)
+#endif
+
+/* Compiler barrier */
+static inline void barrier(void)
+{
+	asm volatile("" : : : "memory");
+}
+
+#endif /* __ASSEMBLY__ */
+
+/* Stringification macro */
+#define __tostr(x)	#x
+#define tostr(x)	__tostr(x)
+
+#endif /* __COMPILER_H */