2002-11-15 Andrew Cagney <ac131313@redhat.com>

2002-11-15  Andrew Cagney  <ac131313@redhat.com>

	* frame.c (frame_pc_unwind): New function.
	(frame_saved_regs_pc_unwind): New function.
	(frame_register_unwind): Pass unwind_cache instead of
	register_unwind_cache.
	(set_unwind_by_pc): Add unwind_pc parameter, set.
	(create_new_frame): Pass frame->pc_unwind to set_unwind_by_pc.
	(get_prev_frame): Ditto.
	* frame.h (frame_pc_unwind_ftype): Declare.
	(struct frame_info): Add pc_unwind, pc_unwind_cache_p and
	pc_unwind_cache.  Rename register_unwind_cache to unwind_cache.
	(frame_pc_unwind): Declare.
	* dummy-frame.c (dummy_frame_pc_unwind): New function.
	(struct dummy_frame): Add comment mentioning that values are for
	previous frame.
	* dummy-frame.h (dummy_frame_pc_unwind): Declare.
	* blockframe.c (file_frame_chain_valid): Use frame_pc_unwind.
	(generic_file_frame_chain_valid): Ditto.
	* stack.c (frame_info): Ditto.