1 files changed, 18 insertions, 0 deletions
diff --git a/gpxe/src/include/stddef.h b/gpxe/src/include/stddef.h
new file mode 100644
index 00000000..6f91d219
--- /dev/null
+++ b/gpxe/src/include/stddef.h
@@ -0,0 +1,18 @@
+#ifndef STDDEF_H
+#define STDDEF_H
+
+/* for size_t */
+#include <stdint.h>
+
+#undef NULL
+#define NULL ((void *)0)
+
+#undef offsetof
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+
+#undef container_of
+#define container_of(ptr, type, member) ({                      \
+	const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
+	(type *)( (char *)__mptr - offsetof(type,member) );})
+
+#endif /* STDDEF_H */