1 files changed, 20 insertions, 0 deletions
diff --git a/os/drivers/include/macro_util.h b/os/drivers/include/macro_util.h
new file mode 100644
index 00000000..0c447476
--- /dev/null
+++ b/os/drivers/include/macro_util.h
@@ -0,0 +1,20 @@
+#ifndef __DD_COMMON_H__
+#define __DD_COMMON_H__
+
+#include <stddef.h>
+
+#define Z_STRINGIFY(x) #x
+#define STRINGIFY(s) Z_STRINGIFY(s)
+
+/* concatenate the values of the arguments into one */
+#define _DO_CONCAT(x, y) x ## y
+#define _CONCAT(x, y) _DO_CONCAT(x, y)
+
+#define OFFSETOF(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+
+#define CONTAINER_OF(ptr, type, member) ({                      \
+      const typeof( ((type *)0)->member ) *__mptr = (ptr);      \
+      (type *)((char *)__mptr - OFFSETOF(type,member));})
+
+#endif/*__DD_COMMON_H__*/
+