#ifdef TREE_CODE
extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx);
extern void function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode, tree, int);
-extern struct rtx_def * function_arg (CUMULATIVE_ARGS *, enum machine_mode, tree, int);
+extern struct rtx_def * function_arg (CUMULATIVE_ARGS *, enum machine_mode, const_tree, int);
extern void iq2000_va_start (tree, rtx);
-extern rtx iq2000_function_value (tree, tree);
+extern rtx iq2000_function_value (const_tree, const_tree);
#endif
#endif /* ! GCC_IQ2000_PROTOS_H */