我有一个大学练习，我必须读取 3 个数组 (3x3) 的值并与它们相加和相乘。D=A+B*C。我已经编写了这段代码，对于屏幕上的结果，我得到 000000000。这是下面的代码。ps我是新手。
n: .word
.align 4
array1: .space 36
.text
.globl main
main:
li $t2, 1
li $t3, 1
li $t4, 1
li $t6, 0
addi $sp, $sp, -144
and $t0, $0, $0 # i = 0
and $t1, $0, $0
and $t5, $0, $0
loopA:
addi $t0, $t0, 1 # add 1 to t0
li $v0, 4
la $a0, amatrix #print a(
syscall
li $v0, 1
move $a0, $t2
syscall
li $v0, 4
la $a0, amatrix2 #print , for the a( , )
syscall
li $v0, 1
move $a0, $t0
syscall #print out actual sum
li $v0, 4
la $a0, amatrix3
syscall
li $v0, 5 # Syscall to read an integer.
syscall # Result returned in $v0.
move $t9, $v0 # n stored in $t9.
beq $t0, 1, saverowA
beq $t0, 2, saverowA
beq $t0, 3, saverowA
loopB:
addi $t1, $t1, 1 # add 1 to t0
li $v0, 4
la $a0, bmatrix #print b(
syscall
li $v0, 1
move $a0, $t3
syscall
li $v0, 4
la $a0, bmatrix2 #print , for the b( , )
syscall
li $v0, 1
move $a0, $t1
syscall #print out actual sum
li $v0, 4
la $a0, bmatrix3
syscall
li $v0, 5 # Syscall to read an integer.
syscall # Result returned in $v0.
move $t8, $v0 # n stored in $t8.
beq $t1, 1, saverowB
beq $t1, 2, saverowB
beq $t1, 3, saverowB
loopC:
addi $t5, $t5, 1 # add 1 to t5
li $v0, 4
la $a0, cmatrix #print a(
syscall
li $v0, 1
move $a0, $t4
syscall
li $v0, 4
la $a0, cmatrix2 #print , for the a( , )
syscall
li $v0, 1
move $a0, $t5
syscall #print out actual sum
li $v0, 4
la $a0, cmatrix3
syscall
li $v0, 5 # Syscall to read an integer.
syscall # Result returned in $v0.
move $t7, $v0 # n stored in $t7.
beq $t5, 1, saverowC
beq $t5, 2, saverowC
beq $t5, 3, saverowC
checkA:
bne $t0, 3, loopA # until t0 reached 3 then go to loopA.
addi $t2, $t2, 1
li $t0, 0
bne $t2, 4, loopA
beq $t2, 4, loopB
checkB:
bne $t1, 3, loopB # until t0 reached 3 then go to loop.
addi $t3, $t3, 1
li $t1, 0
bne $t3, 4, loopB
beq $t3, 4, loopC
checkC:
bne $t5, 3, loopC
addi $t4, $t4, 1
li $t5, 0
bne $t4 ,4, loopC
beq $t4, 4, calc
saverowA:
sw $t9, 0($sp)
addi $sp, $sp, 4
j checkA
saverowB:
sw $t8, 0($sp)
addi $sp, $sp, 4
j checkB
saverowC:
sw $t7, 0($sp)
addi $sp, $sp, 4
j checkC
calc:
beq $t6, 9, reset
addi $sp, $sp, -108
lw $t0, 36($sp) # b(1,1)
lw $t1, 72($sp) # c(1,1)
lw $t2, 0($sp) # a(1,1)
mul $t3, $t0, $t1
add $t4, $t2, $t3
sw $t4 , 108($sp)
addi $sp, $sp, 4
addi $t6, $t6, 1
j calc
reset:
li $t6, 0
j print
print:
addi $t6, $t6 ,1
addi $sp, $sp, -36
lw $a0, 0($sp) # load sum to print
li $v0, 1 # print sum
syscall
addi $sp, $sp, 4
bne $t6, 9, print
exit:
li $v0, 10 # terminate program run and
syscall # Exit
.data
result: .asciiz "Sum = "
amatrix: .asciiz "a("
amatrix2: .asciiz ","
amatrix3: .asciiz ")="
bmatrix: .asciiz "b("
bmatrix2: .asciiz ","
bmatrix3: .asciiz ")="
cmatrix: .asciiz "c("
cmatrix2: .asciiz ","
cmatrix3: .asciiz ")="
dmatrix: .asciiz "d("
dmatrix2: .asciiz ","
dmatrix3: .asciiz ")="