MIPS汇编程序

现看的，可能不是太好，不过倒是能用-x-b

.data

str0: .asciiz "Primes in 1000:\n"

str1: .asciiz ",\n"

.text

.globl __start

__start:

la $a0, str0

li $v0, 4

syscall

li $t0, 2

j __test0

__l0:

li $t1, 1

li $t2, 2

j __test1

__l1:

div $t0, $t2

mfhi $t4

bne $t4, $0, __br1

move $t1, $0

__br1:

addi $t2, 1

__test1:

bne $t2, $t0, __l1

beq $t1, $0, __br0

move $a0, $t0

li $v0, 1

syscall

la $a0, str1

li $v0, 4

syscall

__br0:

addi $t0, 1

__test0:

li $t4, 100

bne $t0, $t4, __l0

li $v0, 10

syscall

----

有个事忘说了，这个真机上可能跑不了，那个模拟器模拟delay slot我没弄明白。

.global main

.data

str0:

.ascii "Input two integers: \000"

str1:

.ascii "%d%d\000"

str2:

.ascii "The sum of %d and %d is %d. \012\000"

add:

addiu $sp, $sp, -12

sw $ra, 8($sp)

sw $fp, 4($sp)

move $fp, $sp

add $v0, $a0, $a1

move $sp, $fp

lw $fp, 4($sp)

lw $ra, 8($sp)

addiu $sp, $sp, 12

j $ra

nop

main:

addiu $sp, $sp, -40

sw $ra, 36($sp)

sw $fp, 32($sp)

move $fp, $sp

la $a0, str0

jal printf

nop

la $a0, str1

addiu $a1, $fp, 28

addiu $a2, $fp, 24

jal __isoc99_scanf

nop

lw $a0, 28($fp)

lw $a1, 24($fp)

jal add

nop

la $a0, str2

lw $a1, 28($fp)

lw $a2, 24($fp)

move $a3, $v0

jal printf

nop

move $sp, $fp

lw $fp, 32($sp)

lw $ra, 36($sp)

addiu $sp, $sp, 40

j $ra

nop

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