+extern void default_remote_breakpoint_from_pc (struct gdbarch *,
+ CORE_ADDR *pcptr, int *kindptr);
+
+extern void default_gen_return_address (struct gdbarch *gdbarch,
+ struct agent_expr *ax,
+ struct axs_value *value,
+ CORE_ADDR scope);
+
+extern const char *default_auto_charset (void);
+extern const char *default_auto_wide_charset (void);
+
+extern int default_return_in_first_hidden_param_p (struct gdbarch *,
+ struct type *);
+
+extern int default_insn_is_call (struct gdbarch *, CORE_ADDR);
+extern int default_insn_is_ret (struct gdbarch *, CORE_ADDR);
+extern int default_insn_is_jump (struct gdbarch *, CORE_ADDR);
+
+/* Do-nothing version of vsyscall_range. Returns false. */
+
+extern int default_vsyscall_range (struct gdbarch *gdbarch, struct mem_range *range);