第一题
.data
outputd: .asciiz "Alpha","November","First","alpha","november","Bravo","Oscar","Second","bravo","oscar","China","Paper","Third","china","paper","Delta","Quebec","Fourth","delta","quebec","Echo","Research","Fifth","echo","research","Foxtrot","Sierra","Sixth","foxtrot","sierra","Golf","Tango","Seventh","golf","tango","Hotel","Uniform","Eighth","hotel","uniform","India","Victor","Ninth","india","victor","Juliet","Whisky","zero","juliet","whisky","Kilo","X-ray","kilo","x-ray","Lima","Yankee","lima","yankee","Mary","Zulu","mary","zulu","",""
vald: .asciiz "A","N","1","a","n","B","O","2","b","o","C","P","3","c","p","D","Q","4","d","q","E","R","5","e","r","F","S","6","f","s","G","T","7","g","t","H","U","8","h","u","I","V","9","i","v","J","W","0","j","w","K","X","k","x","L","Y","l","y","M","Z","m","z","?"
unvald: .asciiz "*"
offs: .word 0,6,15,21,27,36,42,48,55,61,67,73,79,85,91,97,103,110,117,123,130,135,144,150,155,164,172,179,185,193,200,205,211,219,224,230,236,244,251,257,265,271,278,284,290,297,304,311,316,323,330,335,341,346,352,357,364,369,376,381,386,391,396,398
.text
st: li $v0,0xc
syscall
li $t1,0
ju: mul \(t2,\)t1,2 #judje the input
la $t4,vald
add \(t3,\)t2,$t4
lb \(t3,0(\)t3)
beq \(v0,\)t3,out
bgt $t1,62,out
add \(t1,\)t1,1
j ju
out: #output seq
beq $t1,62,over
# read the offset
la $t5,offs
mul \(t7,\)t1,4
add \(t6,\)t5,$t7
lw \(t6,(\)t6)
#add the offset
la $t4,outputd
add \(t3,\)t6,$t4
li $v0,4
la \(a0,(\)t3)
syscall
j st
over:
数据是程序跑出来的不贴了
第二题
.data
stringdata: .space 100
h: .byte 10
g: .byte 13
ok: .asciiz "Success! Location: "
no: .asciiz "Fail!"
.text
li $v0 8
la $a0 stringdata
li $a1 100
syscall
st:
li $v0 0xc
syscall
move $v1 $v0
j ln2
st2:
move $v0 $v1
li $t0 0
la $a0 stringdata
la $a1 h
lb \(a1 (\)a1)
lo:
add $t1 $t0 $a0
lb \(t1 (\)t1)
beq $t1 $v0 Find
beq $t1 $a1 Fail
add $t0 $t0 1
j lo
Find:
li $v0 4
la $a0 ok
syscall
add $t0 $t0 1
li $v0 1
lw $a0 $t0
move $a0 $t0
syscall
j ln
Fail:
li $v0 4
la $a0 no
syscall
j ln
ln:li $v0,0xb
lb $a0,h
syscall
j st
lb $a0,g
syscall
ln2:li $v0,0xb
lb $a0,h
syscall
j st2
