extern enum frame_type get_frame_type (struct frame_info *);
+/* Return the frame's program space. */
+extern struct program_space *get_frame_program_space (struct frame_info *);
+
+/* Unwind THIS frame's program space from the NEXT frame. */
+extern struct program_space *frame_unwind_program_space (struct frame_info *);
+
+/* Return the frame's address space. */
+extern struct address_space *get_frame_address_space (struct frame_info *);
+
/* For frames where we can not unwind further, describe why. */
enum unwind_stop_reason