当计数器以汇编语言达到一定数量时，如何使程序停止？

Question

下面我分享了一个示例MIPS汇编程序，它从控制台读取一系列整数。有效条目介于-110和120（含）之间。如果条目无效，则拒绝该条目并在屏幕上显示错误消息。 （供参考，以了解您的代码的逻辑）。从这段代码开始，我还想补充一点，当数字计数变为8时，程序将停止阅读。你有任何想法吗？

#       Program Description

#  Reads integers from the keyboard and displays the total
#    number of entries, sum, and integer average
#  Reads until -1 is entered
#  Only accepts values between 10 and 99 (inclusive)
#

#  t0 = 0       # Total
#  t1 = 0       # Count
#  t2 = -110        # Min
#  t3 = 120     # Max
#  t4 = -467        # Stop
#
###########################################################
#       Register Usage
#   $t0  Running total
#   $t1  Entry count
#   $t2  Minimum value
#   $t3  Maximum value
#   $t4  Stop value
#   $t5  Entry (from user)
###########################################################
        .data
enter_p:  .asciiz "Enter a value between -110 and 120 (inclusive):  "
invalid_p:  .asciiz "Invalid value\n\n"
count_p:  .asciiz "\n\nNumber of entries:  "
total_p:  .asciiz "\nTotal:  "
average_p:  .asciiz "\nInteger average:  "
noentry_p:  .asciiz "\n\nNo valid values entered\n"

###########################################################
        .text
main:
    # Initialize values
    li $t0, 0       # Total
    li $t1, 0       # Count
    li $t2, -110        # Min value
    li $t3, 120     # Max value
    li $t4, -467        # Stop value

readLoop:
    # Get value
    li $v0, 4
    la $a0, enter_p
    syscall         # Prompt for value
    li $v0, 5
    syscall         # Read entry

    # Validate value
    beq $v0, $t4, getResults
    blt $v0, $t2, entryInvalid
    bgt $v0, $t3, entryInvalid

    # If program gets here, the entry is valid
    add $t0, $t0, $v0   # Add entry to total
    addiu $t1, $t1, 1   # Increment counter

    b readLoop          # Loop

entryInvalid:
    li $v0, 4
    la $a0, invalid_p
    syscall         # Print error message

    b readLoop      # Go back and read more

getResults:
    beqz $t1, zeroEntries   # Prevent divide by 0

    # Display number of entries
    li $v0, 4
    la $a0, count_p
    syscall         # Print 'count' string
    li $v0, 1
    move $a0, $t1
    syscall         # Print count

    # Display total
    li $v0, 4
    la $a0, total_p
    syscall         # Print 'total' string
    li $v0, 1
    move $a0, $t0
    syscall         # Print total

    # Calculate and display average
    li $v0, 4
    la $a0, average_p
    syscall         # Print 'average' string
    li $v0, 1
    div $a0, $t0, $t1   # Put results directly into $a0
    syscall         # Print average

    b mainEnd       # Done

zeroEntries:
    li $v0, 4
    la $a0, noentry_p
    syscall         # Print 'no entries' message

mainEnd:
    li $v0, 10      # End Program
    syscall