bfin.opt (msim): New option.

bfin.opt (msim): New option.

	2007-02-11  Jie Zhang  <jie.zhang@analog.com>
	* config/bfin/bfin.opt (msim): New option.
	(mcpu=): New option.
	* config/bfin/bfin-protos.h (enum bfin_cpu): New.
	(bfin_cpu_t): Typedef of enum bfin_cpu.
	(bfin_cpu_type): New declaration.
	* config/bfin/elf.h (STARTFILE_SPEC): Add support for
	-msim and -mcpu= options.
	(LIB_SPEC): Likewise.
	* config/bfin/bfin.c (bfin_cpu_type): Define.
	(bfin_handle_option): Handle -mcpu= option.
	* config/bfin/bfin.h (DEFAULT_CPU_TYPE): Define as BFIN_CPU_BF532.
	(TARGET_CPU_CPP_BUILTINS): Define __ADSPBF531__, __ADSPBF532__,
	__ADSPBF533__ or __ADSPBF537__ according to the cpu type.

From-SVN: r123747