2004-08-01 Andrew Cagney <cagney@gnu.org>

2004-08-01  Andrew Cagney  <cagney@gnu.org>

	* mips-tdep.c (mips16_frame_cache)
	(mips16_frame_this_id, mips16_frame_prev_register)
	(mips16_frame_unwind, mips16_frame_sniffer)
	(mips16_frame_base_address, mips16_frame_base)
	(mips16_frame_base_sniffer, mips32_frame_cache)
	(mips32_frame_this_id, mips32_frame_prev_register)
	(mips32_frame_unwind, mips32_frame_sniffer)
	(mips32_frame_base_address, mips32_frame_base)
	(mips32_frame_base_sniffer): Clone the mdebug unwinder into
	separate heuristic mips16 and mips32 unwinders.
	(mips_stub_frame_cache, mips_stub_frame_this_id)
	(mips_stub_frame_prev_register)
	(mips_stub_frame_unwind, mips_stub_frame_sniffer)
	(mips_stub_frame_base_address, mips_stub_frame_base)
	(mips_stub_frame_base_sniffer): Add a simple stub unwinder.
	(mips_mdebug_frame_base_sniffer, mips_mdebug_frame_sniffer): Only
	match true mdebug frames.
	(non_heuristic_proc_desc): Add forward declaration.