* frame.h (legacy_saved_regs_unwind)
(legacy_frame_chain_valid, legacy_frame_p)
(enum frame_type): Delete UNKNOWN_FRAME.
- * dummy-frame.c (dummy_frame_this_id):
- * frame-unwind.c (frame_unwind_find_by_frame):
+ * dummy-frame.c (dummy_frame_this_id): Simplify.
+ * frame-unwind.c (frame_unwind_find_by_frame): Simplify.
* frame.c (struct frame_info): Delete the field "type".
(legacy_saved_regs_prev_register, legacy_get_prev_frame)
(legacy_saved_regs_this_id, legacy_saved_regs_unwinder)