initial version

code/lab6/libs/stdarg.h

@@ -0,0 +1,12 @@
+#ifndef __LIBS_STDARG_H__
+#define __LIBS_STDARG_H__
+
+/* compiler provides size of save area */
+typedef __builtin_va_list va_list;
+
+#define va_start(ap, last)              (__builtin_va_start(ap, last))
+#define va_arg(ap, type)                (__builtin_va_arg(ap, type))
+#define va_end(ap)                      /*nothing*/
+
+#endif /* !__LIBS_STDARG_H__ */
+