所以我的程序有问题。我有一个for循环，里面有一堆多条件if语句，当它运行的时候，它给了我一个无限循环。这是整个程序中循环发生的部分

li $t7, 0 # i=0
    bge $t7, $s0, exit_i # i < trackHeight
    addi $t7, $t7, 1 # i++
    # j forDraw_1 # loop while i=0
    
    i_plus:
    li $t8, 0 # j=0
    bge $t8, $s1, exit_j # j < trackWidth
    addi $t8, $t8, 1 # j++
    # j i_plus # loop while j=0
    
        # j_plus:
        if_1:
        beq $t7, $zero, drawBorder # i==0
        beq $t8, $zero, drawBorder # j==0
        
        addi $t9, $s0, -1 # trackHeight -1
        beq $t7, $t9, drawBorder # i== t.h -1
        
        addi $t5, $s1, -1 # trackWidth -1
        beq $t8, $t5, drawBorder # j== t.w -1
        
        # else if 1
        beq $t7, $s2, draw219 # i == x
        beq $t8, $s3, draw219 # j == y
        # else if 2
        #beq $t7, $s2, draw219 # i == x
        addi $t4, $s3, -1 # y-1
        beq $t8, $t4, draw219 # j == y-1
        # else if 3
        #beq $t7, $s2, draw56 # i == x
        addi $t4, $t4, 2 # y-1 --> y+1
        beq $t8, $t4, draw56 # j == y+1
        # else if 4
        addi $t3, $s2, 1 # x+1
        beq $t7, $t3, draw254 # i == x+1
        #addi $t4, $t4, -1 # j back to 0
        #beq $t8, $s3, draw254 # j == y
        # else if 5
        addi $t3, $t3, -2 # x+1 --> x-1
        beq $t7, $t3, draw127 # i == x-1
        #beq $t8, $s3, draw127 # j == y
        # else if 6
        addi $t4, $zero, 10
        ble $t8, $zero, printLane # j>0
        div $t8, $t4
        mfhi $t5
        beqz $t5, printLane
        
        
        drawBorder:
        li $v0, 4
        la $a0, outsideBorder
        syscall
        j if_1
        
        printLane:
        li $v0, 4
        la $a0, lanes
        syscall
    
    
        draw219:
        li $t5, 219
        move $a0, $t5
        li $v0, 11
        syscall
        
        draw56:
        li $t5, 56
        move $a0, $t5
        li $v0, 11
        syscall
        
        draw254:
        li $t5, 254
        move $a0, $t5
        li $v0, 11
        syscall
        
        draw127:
        li $t5, 127
        move $a0, $t5
        li $v0, 11
        syscall

我也试着用不同的格式写，但是也得到了一个无限循环。这是另一种格式。不确定是什么问题，但是我有一种强烈的感觉，它来自循环的初始化

bne $t7, $zero, else_if1 # i==0
        bne $t8, $zero, else_if1  # j==0
        
        addi $t9, $s0, -1 # trackHeight -1
        bne $t7, $t9, else_if1  # i== t.h -1
        
        addi $t5, $s1, -1 # trackWidth -1
        bne $t8, $t5, else_if1  # j== t.w -1
        
        li $v0, 4
        la $a0, outsideBorder
        syscall
        
        else_if1:
        bne $t7, $s2, else_if2 # i == x
        bne $t8, $s3, else_if2 # j == y
        li $t5, 219
        move $a0, $t5
        li $v0, 11
        syscall
        
        else_if2:
        beq $t7, $s2, else_if3 # i == x
        addi $t4, $s3, -1 # y-1
        bne $t8, $t4, else_if3 # j == y-1
        li $t5, 219
        move $a0, $t5
        li $v0, 11
        syscall
        
        else_if3:
        beq $t7, $s2, else_if4 # i == x
        addi $t4, $t4, 2 # y-1 --> y+1
        bne $t8, $t4, else_if4 # j == y+1
        li $t5, 56
        move $a0, $t5
        li $v0, 11
        syscall
        
        else_if4:
        addi $t3, $s2, 1 # x+1
        bne $t7, $t3, else_if5 # i == x+1
        #addi $t4, $t4, -1 # j back to 0
        beq $t8, $s3, else_if5 # j == y
        li $t5, 254
        move $a0, $t5
        li $v0, 11
        syscall
        
        else_if5:
        addi $t3, $t3, -2 # x+1 --> x-1
        bne $t7, $t3, else_if6 # i == x-1
        beq $t8, $s3, else_if6  # j == y
        li $t5, 127
        move $a0, $t5
        li $v0, 11
        syscall
        
        else_if6:
        addi $t4, $zero, 10
        ble $t8, $zero, printLane # j>0
        div $t8, $t4
        mfhi $t5
        beqz $t5, printLane
        li $v0, 4
        la $a0, lanes
        syscall