com.s

ARM入门的好帮手.包含了从简单到相对较复杂的程序.

	.file	"c:/at91/software/projects/bench/source/com.c"
	.option	svr4
	.option	arm_code
	.option	inter
	.ident	"hc4.5a -O7 \n"
	.option	noswst
	.seg	".text",text
	.option	code32,inter
.L00TEXT:
;-------------| at91_open_com |-------------------
	.align	4
	.global	at91_open_com
at91_open_com:
	.cfa_bf	at91_open_com
	stmdb	%sp!,{%r8,%lr}
	.cfa_push	{%r8,%lr}
	mov	%r8,%r0
	ldr	%r0,[%r8, #0]
	mov	%r3,#0
	bl	at91_usart_open
	ldr	%ip,[%r8, #0]
	mvn	%r3,#0
	ldr	%ip,[%ip, #0]
	str	%r3,[%ip, #12]
	mov	%ip,#1
	str	%ip,[%r8, #4]
	.cfa_remember_state
	ldmia	%sp!,{%r8,%ip}
	.cfa_pop	{%r8,%ip}
	bx	%ip
	.cfa_restore_state
	.cfa_ef
	.type at91_open_com, @function
	.size at91_open_com, . - at91_open_com
;-------------| at91_close_com |-------------------
	.align	4
	.global	at91_close_com
at91_close_com:
	.cfa_bf	at91_close_com
	stmdb	%sp!,{%r8,%lr}
	.cfa_push	{%r8,%lr}
	mov	%r8,%r0
	ldr	%r0,[%r8, #0]
	bl	at91_usart_close
	mov	%ip,#1
	str	%ip,[%r8, #4]
	.cfa_remember_state
	ldmia	%sp!,{%r8,%ip}
	.cfa_pop	{%r8,%ip}
	bx	%ip
	.cfa_restore_state
	.cfa_ef
	.type at91_close_com, @function
	.size at91_close_com, . - at91_close_com
;-------------| at91_print |-------------------
	.align	4
	.global	at91_print
at91_print:
	.cfa_bf	at91_print
	stmdb	%sp!,{%r8-%r10,%lr}
	.cfa_push	{%r8-%r10,%lr}
	mov	%r10,%r1
	mov	%r9,#0
	ldrb	%ip,[%r10, %r9]
	mov	%r8,%r0
	cmp	%ip,#0
	beq	.L01157
.L01154:
	ldr	%r0,[%r8, #0]
	bl	at91_usart_get_status
	tsts	%r0,#2
	bne	.L01156
.L01155:
	ldr	%r0,[%r8, #0]
	bl	at91_usart_get_status
	tsts	%r0,#2
	beq	.L01155
.L01156:
	ldrb	%r1,[%r10, %r9]
	ldr	%r0,[%r8, #0]
	bl	at91_usart_write
	add	%r9,%r9,#1
	ldrb	%ip,[%r10, %r9]
	cmp	%ip,#0
	bne	.L01154
.L01157:
	.cfa_remember_state
	ldmia	%sp!,{%r8-%r10,%ip}
	.cfa_pop	{%r8-%r10,%ip}
	bx	%ip
	.cfa_restore_state
	.cfa_ef
	.type at91_print, @function
	.size at91_print, . - at91_print
;-------------| at91_print_frame |-------------------
	.align	4
	.global	at91_print_frame
at91_print_frame:
	.cfa_bf	at91_print_frame
	stmdb	%sp!,{%r8-%r10,%lr}
	.cfa_push	{%r8-%r10,%lr}
	mov	%r10,%r0
	ldr	%r0,[%r10, #0]
	mov	%r9,%r1
	ldr	%r3,[%r0, #0]
	mov	%r8,%r2
	ldr	%ip,[%r3, #60]
	cmp	%ip,#0
	beq	.L01165
.L01164:
	ldr	%ip,[%r3, #60]
	cmp	%ip,#0
	bne	.L01164
.L01165:
	bl	at91_usart_get_status
	tsts	%r0,#2
	bne	.L01167
.L01166:
	ldr	%r0,[%r10, #0]
	bl	at91_usart_get_status
	tsts	%r0,#2
	beq	.L01166
.L01167:
	ldr	%ip,[%r10, #0]
	ldr	%ip,[%ip, #0]
	str	%r9,[%ip, #56]
	str	%r8,[%ip, #60]
	.cfa_remember_state
	ldmia	%sp!,{%r8-%r10,%ip}
	.cfa_pop	{%r8-%r10,%ip}
	bx	%ip
	.cfa_restore_state
	.cfa_ef
	.type at91_print_frame, @function
	.size at91_print_frame, . - at91_print_frame
;-------------| at91_print_crlf |-------------------
	.align	4
	.global	at91_print_crlf
at91_print_crlf:
	.cfa_bf	at91_print_crlf
	stmdb	%sp!,{%lr}
	.cfa_push	{%lr}
	sub	%sp,%sp,#4
	.cfa_push	4
	mov	%r3,#10
	strb	%r3,[%sp, #0]
	mov	%r3,#13
	strb	%r3,[%sp, #1]
	mov	%r3,#0
	strb	%r3,[%sp, #2]
	mov	%r1,%sp
	bl	at91_print
	.cfa_remember_state
	add	%sp,%sp,#4
	.cfa_pop	4
	ldmia	%sp!,{%ip}
	.cfa_pop	{%ip}
	bx	%ip
	.cfa_restore_state
	.cfa_ef
	.type at91_print_crlf, @function
	.size at91_print_crlf, . - at91_print_crlf
;-------------| at91_getch |-------------------
	.align	4
	.global	at91_getch
at91_getch:
	.cfa_bf	at91_getch
	stmdb	%sp!,{%r8-%r10,%lr}
	.cfa_push	{%r8-%r10,%lr}
	mov	%r9,%r0
	ldr	%r0,[%r9, #0]
	mov	%r10,%r1
	bl	at91_usart_get_status
	and	%ip,%r0,#1
	eors	%r8,%ip,#1
	ldreq	%r0,[%r9, #0]
	moveq	%r1,%r10
	bleq	at91_usart_read
	mov	%r0,%r8
	.cfa_remember_state
	ldmia	%sp!,{%r8-%r10,%ip}
	.cfa_pop	{%r8-%r10,%ip}
	bx	%ip
	.cfa_restore_state
	.cfa_ef
	.type at91_getch, @function
	.size at91_getch, . - at91_getch
;-------------| at91_send_byte |-------------------
	.align	4
	.global	at91_send_byte
at91_send_byte:
	.cfa_bf	at91_send_byte
	stmdb	%sp!,{%r4,%r8,%r9,%lr}
	.cfa_push	{%r4,%r8,%r9,%lr}
	mov	%r8,%r0
	ldr	%r0,[%r8, #0]
	mov	%r9,%r1
	ldr	%r3,[%r0, #0]
	ldr	%ip,[%r3, #60]
	cmp	%ip,#0
	beq	.L01215
.L01214:
	ldr	%ip,[%r3, #60]
	cmp	%ip,#0
	bne	.L01214
.L01215:
	bl	at91_usart_get_status
	tsts	%r0,#2
	bne	.L01217
.L01216:
	ldr	%r0,[%r8, #0]
	bl	at91_usart_get_status
	tsts	%r0,#2
	beq	.L01216
.L01217:
	ldr	%r0,[%r8, #0]
	mov	%r1,%r9
	bl	at91_usart_write
	.cfa_remember_state
	ldmia	%sp!,{%r4,%r8,%r9,%ip}
	.cfa_pop	{%r4,%r8,%r9,%ip}
	bx	%ip
	.cfa_restore_state
	.cfa_ef
	.type at91_send_byte, @function
	.size at91_send_byte, . - at91_send_byte
	.end