2004-04-08 Andrew Cagney <cagney@redhat.com>

2004-04-08  Andrew Cagney  <cagney@redhat.com>

	* frame-unwind.c (struct frame_unwind_table, frame_unwind_init)
	(frame_unwind_prepend_unwinder, frame_unwind_append_sniffer)
	(frame_unwind_find_by_frame): Re-implement the unwind code so
	that it can both prepend and append sniffers.  Replace
	frame_unwind_register_unwinder with frame_unwind_prepend_unwinder.
	* tramp-frame.c (tramp_frame_append): Use
	frame_unwind_prepend_unwinder.
	* frame-unwind.h (frame_unwind_prepend_unwinder): Replace
	frame_unwind_register_unwinder.
	* tramp-frame.h (tramp_frame_prepend_unwinder): Rename
	tramp_frame_append.
	* tramp-frame.c (tramp_frame_prepend_unwinder): Update.
	* mips-linux-tdep.c (mips_linux_init_abi, mips_linux_init_abi)
	(mips_linux_init_abi): Update.