-extern enum unwind_info_type default_except_unwind_info (void);
-extern enum unwind_info_type dwarf2_except_unwind_info (void);
-extern enum unwind_info_type sjlj_except_unwind_info (void);
+
+extern int default_label_align_after_barrier_max_skip (rtx);
+extern int default_loop_align_max_skip (rtx);
+extern int default_label_align_max_skip (rtx);
+extern int default_jump_align_max_skip (rtx);
+extern section * default_function_section(tree decl, enum node_frequency freq,
+ bool startup, bool exit);
+extern enum machine_mode default_get_reg_raw_mode(int);
+
+extern void *default_get_pch_validity (size_t *);
+extern const char *default_pch_valid_p (const void *, size_t);