嵌入式系统/ARM汇编语言

ARM指令集格式

指令	31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ADC	Cond				0	0	I	0	1	0	1	S	Rn				Rd				移位操作数
ADD	Cond				0	0	I	0	1	0	0	S	Rn				Rd				移位操作数
AND	Cond				0	0	I	0	0	0	0	S	Rn				Rd				移位操作数
B, BL	Cond				1	0	1	L	signed_immed_24
BIC	Cond				0	0	I	1	1	1	0	S	Rn				Rd				移位操作数
BKPT	1	1	1	0	0	0	0	1	0	0	1	0	immed												0	1	1	1	immed
BLX (1)	1	1	1	1	1	0	1	H	signed_immed_24
BLX (2)	Cond				0	0	0	1	0	0	1	0	SBO				SBO				SBO				0	0	1	1	Rm
BX	Cond				0	0	0	1	0	0	1	0	SBO				SBO				SBO				0	0	0	1	Rm
CDP	Cond				1	1	1	0	opcode_1				CRn				CRd				cp_num				opcode_2			0	CRm
CLZ	Cond				0	0	0	1	0	1	1	0	SBO				Rd				SBO				0	0	0	1	Rm
CMN	Cond				0	0	I	1	0	1	1	S	Rn				SBZ				移位操作数
CMP	Cond				0	0	I	1	0	1	0	S	Rn				SBZ				移位操作数
LDC	Cond				1	1	0	P	U	N	W	1	Rn				CRd				cp_num				8_bit_word_offset
LDM (1)	Cond				1	0	0	P	U	0	W	1	Rn				register_list
LDM (2)	Cond				1	0	0	P	U	1	0	1	Rn				0	register_list
LDM (3)	Cond				1	0	0	P	U	1	W	1	Rn				1	register_list
LDR	Cond				0	1	I	P	U	0	W	1	Rn				Rd				addr_mode

我们在ARM微处理器中更详细地介绍如何使用ARM汇编语言。