2002-12-13 Andrew Cagney <ac131313@redhat.com>

2002-12-13  Andrew Cagney  <ac131313@redhat.com>

	* frame.h (frame_id_unwind): Declare.
	(struct frame_info): Add fields id_unwind, id_unwind_cache_p and
	id_unwind_cache.
	(frame_id_unwind_ftype): Declare.
	* frame.c (frame_id_unwind): New function.
	(set_unwind_by_pc): Add unwind_id parameter.  Initialized.
	(create_new_frame, get_prev_frame): Pass id_unwind to
	set_unwind_by_pc.
	(frame_saved_regs_id_unwind): New function.
	(frame_saved_regs_id_unwind): New function.
	* dummy-frame.c (dummy_frame_id_unwind): New function.
	(struct dummy_frame): Add field id.
	(generic_push_dummy_frame): Initialize `id'.
	* dummy-frame.h (dummy_frame_id_unwind): Declare.