编辑1：添加
后mov r0, #0
pop {pc}
到 main：的末尾，我现在在12个用户输入后，在“非法指令”发生的同一位置得到“分段错误”。
参与大会家庭作业项目，我正在努力了解我的错误。目前，该程序将在我的覆盆子pi终端执行，它将接受我的十二个输入。在那之后，我收到消息'非法指令'。我确定添加：区域有问题，而且我无法测试 avg：部分，以查找月份的平均值 - 尽管我确定我写错了。
在我能够解决这些问题后，我将需要处理程序，打印出用户输出的最高和最低输入值，这可能需要稍后自己发布。
对此有任何提示或建议。
.text
.global main
add:
// sum of months
// month amounts stored in r2 (jan) thru r13 (dec)
add r1, r2, r3
add r2, r4, r5
add r3, r6, r7
add r4, r8, r9
add r5, r10, r11
add r6, r12, r13
add r7, r1, r2
add r8, r3, r4
add r9, r5, r6
add r1, r7, r8
add r2, r1, r9
ldr r0, =sum
mov r1, r2
bl printf
average:
// average of months
mov r4, #12
cmp r4, r2, lsr #1
ldr r0, =avg
mov r1, r2
bl printf
Div1:
movls r4, r4, lsl #1
cmp r4, r2, lsr #1
bls Div1
mov r3, #0
Div2:
cmp r2, r4
subcs r2, r2, r4
adc r3, r3, r3
mov r4, r4, lsr #1
cmp r4, #12
bhs Div2
main:
sub sp, sp, #4
str lr, [sp, #0]
ldr r0, =welcome
bl printf
ldr r0, =jan
bl printf
// january
ldr r0, =scan_pat
sub sp, sp, #4
mov r1, sp
bl scanf
ldr r2, [sp, #0]
add sp, sp, #4
ldr r0, =feb
bl printf
// february
ldr r0, =scan_pat
sub sp, sp, #4
mov r1, sp
bl scanf
ldr r3, [sp, #0]
add sp, sp, #4
ldr r0, =mar
bl printf
// march
ldr r0, =scan_pat
sub sp, sp, #4
mov r1, sp
bl scanf
ldr r4, [sp, #0]
add sp, sp, #4
ldr r0, =apr
bl printf
// april
ldr r0, =scan_pat
sub sp, sp, #4
mov r1, sp
bl scanf
ldr r5, [sp, #0]
add sp, sp, #4
ldr r0, =may
bl printf
// may
ldr r0, =scan_pat
sub sp, sp, #4
mov r1, sp
bl scanf
ldr r6, [sp, #0]
add sp, sp, #4
ldr r0, =jun
bl printf
// june
ldr r0, =scan_pat
sub sp, sp, #4
mov r1, sp
bl scanf
ldr r7, [sp, #0]
add sp, sp, #4
ldr r0, =jul
bl printf
// july
ldr r0, =scan_pat
sub sp, sp, #4
mov r1, sp
bl scanf
ldr r8, [sp, #0]
add sp, sp, #4
ldr r0, =aug
bl printf
// august
ldr r0, =scan_pat
sub sp, sp, #4
mov r1, sp
bl scanf
ldr r9, [sp, #0]
add sp, sp, #4
ldr r0, =sep
bl printf
// september
ldr r0, =scan_pat
sub sp, sp, #4
mov r1, sp
bl scanf
ldr r10, [sp, #0]
add sp, sp, #4
ldr r0, =oct
bl printf
// october
ldr r0, =scan_pat
sub sp, sp, #4
mov r1, sp
bl scanf
ldr r11, [sp, #0]
add sp, sp, #4
ldr r0, =nov
bl printf
// november
ldr r0, =scan_pat
sub sp, sp, #4
mov r1, sp
bl scanf
ldr r12, [sp, #0]
add sp, sp, #4
ldr r0, =dec
bl printf
// december
ldr r0, =scan_pat
sub sp, sp, #4
mov r1, sp
bl scanf
ldr r13, [sp, #0]
add sp, sp, #4
mov r0, #0
pop {pc}
.data
welcome: .asciz "Welcome to the Rainfall Statistics Program.\nYou will be asked to enter the rainfall values for each month of a year in centimeters.\n"
jan: .asciz "Please enter the rainfall for January.\n"
feb: .asciz "Please enter the rainfall for February.\n"
mar: .asciz "Please enter the rainfall for March.\n"
apr: .asciz "Please enter the rainfall for April.\n"
may: .asciz "Please enter the rainfall for May.\n"
jun: .asciz "Please enter the rainfall for June.\n"
jul: .asciz "Please enter the rainfall for July.\n"
aug: .asciz "Please enter the rainfall for August.\n"
sep: .asciz "Please enter the rainfall for September.\n"
oct: .asciz "Please enter the rainfall for October.\n"
nov: .asciz "Please enter the rainfall for November.\n"
dec: .asciz "Please enter the rainfall for December.\n"
scan_pat: .asciz "%d"
sum: .asciz "The total rainfall for the year is %d .\n"
avg: .asciz "The average rainfall is %d .\n"