如何在MIPS中打印字符串数组?

时间:2014-10-05 00:32:36

标签: arrays assembly printing mips

我有一个字符串数组,我想打印出来。这是我目前所拥有的:

data: .asciiz "foo", "bar", "hello", "elephant"...(16 of these strings)
size: .word 16


    move $s0, $zero # i = 0
    la $s1, data # load array
    la $s2, size #load size
print_array:


bge $s0, $s2, exit # i >= size -> exit

la $a0, 0($s1) #load the string into a0
li $v0, 4 #print string
syscall

addi $s0, $s0, 1 # i++
addi $s1, $s1, 4

j print_array

exit:
    jr $ra

我知道这不起作用,因为li $ v0,4仅用于打印字符串。我不知道下一步该做什么......

2 个答案:

答案 0 :(得分:0)

这不是一个字符串数组,这是一个长字符串。您没有在任何地方记录单独单词的起始地址。

另一个保存地址的数组可以循环它。

.section .rodata

data1: .asciz "foo"
data2: .asciz "bar"
data3: .asciz "hello"
data4: .asciz "elephant"
# ...(16 of these strings)

array_of_strings:
    .word data1, data2, data3, data4, ...
    .word 0      // NULL-terminate the list if you want, instead of using the end-address
array_of_strings_end:

# Or calculate the size at assemble time (/4 to scale by the word size, so it's an element count not a byte count)
# storing the size in memory is pointless, though; make it an assemble-time constant with .equ

.equ size, (array_of_strings_end - array_of_strings)/4

另请注意,它是.asciz,而不是.asciiz

答案 1 :(得分:-1)

尝试使用.ascii指令,这样就不会在字符串末尾添加空字符。

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