move message dir into common

common/endian.hpp

@@ -0,0 +1,47 @@
+#ifndef ENDIAN_H
+#define ENDIAN_H
+
+#ifdef IS_BIG_ENDIAN
+#	define SWAP_16(x) (__builtin_bswap16(x))
+#	define SWAP_32(x) (__builtin_bswap32(x))
+#	define SWAP_64(x) (__builtin_bswap64(x))
+#else
+#	define SWAP_16(x) x
+#	define SWAP_32(x) x
+#	define SWAP_64(x) x
+#endif
+
+namespace endian
+{
+
+template <typename T>
+T swap(const T&);
+	
+template <>
+inline int8_t swap(const int8_t& val)
+{
+	return val;
+}
+
+template <>
+inline int16_t swap(const int16_t& val)
+{
+	return SWAP_16(val);
+}
+
+template <>
+inline int32_t swap(const int32_t& val)
+{
+	return SWAP_32(val);
+}
+
+template <>
+inline int64_t swap(const int64_t& val)
+{
+	return SWAP_64(val);
+}
+
+}
+
+#endif
+