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-rw-r--r--src/common/macros.h46
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diff --git a/src/common/macros.h b/src/common/macros.h
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+
+/* OpenIDA - Outil d'analyse de fichiers binaires
+ * macros.h - prototypes de macros utiles
+ *
+ * Copyright (C) 2008 Cyrille Bagard
+ *
+ * This file is part of OpenIDA.
+ *
+ * OpenIDA is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * OpenIDA is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Foobar. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#ifndef _COMMON_MACROS_H
+#define _COMMON_MACROS_H
+
+
+#include <stddef.h>
+#include <stdint.h>
+
+
+
+#ifndef NULL
+# define NULL ((void *)0)
+#endif
+
+
+#define container_of(ptr, type, member) \
+ ({ \
+ const typeof(((type *)NULL)->member) *__mptr = (ptr); \
+ (type *)((uint8_t *)__mptr - offsetof(type, member)); \
+ })
+
+
+
+#endif /* _COMMON_MACROS_H */