+ if (builtin_decl_explicit (BUILT_IN_RETURN_ADDRESS) == NULL_TREE)
+ {
+ ftype = build_function_type_list (ptr_type_node, integer_type_node,
+ NULL_TREE);
+ local_define_builtin ("__builtin_return_address", ftype,
+ BUILT_IN_RETURN_ADDRESS,
+ "__builtin_return_address",
+ ECF_NOTHROW);
+ }
+
+ if (!builtin_decl_explicit_p (BUILT_IN_PROFILE_FUNC_ENTER)
+ || !builtin_decl_explicit_p (BUILT_IN_PROFILE_FUNC_EXIT))
+ {
+ ftype = build_function_type_list (void_type_node, ptr_type_node,
+ ptr_type_node, NULL_TREE);
+ if (!builtin_decl_explicit_p (BUILT_IN_PROFILE_FUNC_ENTER))
+ local_define_builtin ("__cyg_profile_func_enter", ftype,
+ BUILT_IN_PROFILE_FUNC_ENTER,
+ "__cyg_profile_func_enter", 0);
+ if (!builtin_decl_explicit_p (BUILT_IN_PROFILE_FUNC_EXIT))
+ local_define_builtin ("__cyg_profile_func_exit", ftype,
+ BUILT_IN_PROFILE_FUNC_EXIT,
+ "__cyg_profile_func_exit", 0);
+ }
+