diff --git a/sys/functionlist.h b/sys/functionlist.h
new file mode 100644
index 0000000..61dcd64
--- /dev/null
+++ b/sys/functionlist.h
@@ -0,0 +1,62 @@
+#ifndef LPC_FUNCTIONLIST_H
+#define LPC_FUNCTIONLIST_H
+
+#ifndef __DRIVER_SOURCE__
+#include "lpctypes.h"
+
+#define NAME_INHERITED      0x80000000 /* Defined by inheritance         */
+#define TYPE_MOD_STATIC     0x40000000 /* Static function or variable    */
+#define TYPE_MOD_NO_MASK    0x20000000 /* The nomask => not redefineable */
+#define TYPE_MOD_PRIVATE    0x10000000 /* Can't be inherited             */
+#define TYPE_MOD_PUBLIC     0x08000000 /* Force inherit through private  */
+#define TYPE_MOD_VARARGS    0x04000000 /* Used for type checking         */
+#define TYPE_MOD_VIRTUAL    0x02000000  /* can be re- and cross- defined */
+#define TYPE_MOD_PROTECTED  0x01000000 /* cannot be called externally    */
+#define TYPE_MOD_XVARARGS   0x00800000  /* accepts optional arguments    */
+#define TYPE_MOD_NOSAVE     TYPE_MOD_STATIC  /* vars: can't be saved     */
+  /* Internally TYPE_MOD_NOSAVE is 0x00400000, but that never leaves
+   * the compiler.
+   */
+#define NAME_CROSS_DEFINED  0x00080000 /* function defined from other program */
+#define NAME_HIDDEN         0x00020000 /* Not visible for inheritance    */
+#define NAME_PROTOTYPE      0x00010000 /* Defined by a prototype only    */
+#define NAME_UNDEFINED      0x00008000 /* Not defined yet                */
+#define NAME_TYPES_LOST     0x00004000 /* inherited, no save_types       */
+
+#endif /* !__DRIVER_SOURCE__ */
+
+
+/* Return value flag types for functionlist() and variable_list() */
+
+#define RETURN_FUNCTION_NAME	0x01
+#define RETURN_FUNCTION_FLAGS	0x02
+#define RETURN_FUNCTION_TYPE	0x04
+
+
+/* Additional return value flag types for functionlist() */
+
+#define RETURN_FUNCTION_NUMARG	0x08
+#define RETURN_FUNCTION_ARGTYPE 0x10 /* not implemented */
+
+
+/* Additional return value flag types for variable_list() */
+
+#define RETURN_VARIABLE_VALUE	0x08
+
+
+/* Masks of the flag unions allowed for various efuns: */
+#define RETURN_FUNCTION_MASK    0x0f  /* functionlist() */
+#define RETURN_VARIABLE_MASK    0x0f  /* variable_list() */
+
+/* Return value flag types for function_exists() */
+
+#define FEXISTS_PROGNAME  (0)
+#define FEXISTS_FILENAME  (1)
+#define FEXISTS_LINENO    (2)
+#define FEXISTS_NUMARG    (3)
+#define FEXISTS_TYPE      (4)
+#define FEXISTS_FLAGS     (5)
+
+#define FEXISTS_ALL       (3)
+
+#endif /* LPC_FUNCTIONLIST_H */