2007-05-17 Qinwei <qinwei@sunnorth.com.cn>

2007-05-17  Qinwei  <qinwei@sunnorth.com.cn>

	* score-tdep.c (score_frame_cache->fp, score_analyze_prologue)
	(score_prologue_frame_base_address): Return fp to keep gdb print
	local variables correctly when debugging information is stabs.

	(score_analyze_prologue): For software watchpoint, fetch all the
	instructions from range [startaddr, pc] once and identify them locally
	to reduce memory access.
	(score_malloc_and_get_memblock, score_free_memblock)
	(score_adjust_memblock_ptr): New functions.
	(score_fetch_inst): Fetch single instruction or mutiple instructions.

	(score_target_can_use_watch, score_stopped_by_watch)
	(score_target_insert_watchpoint, score_target_remove_watchpoint)
	(score_target_insert_hw_breakpoint, score_target_remove_hw_breakpoint):
	New functions for remote & local hw-watchpoint and hw-breakpoint.