我有一个来自uni的作业，我们必须创建一个执行以下功能的小程序：
1）创建一个新的个人资料（姓名，姓氏，兴趣，visibilityFlag ecc）
2）搜索个人资料（搜索个人资料的可见性必须为真）
3）删除自己的个人资料
4）显示所有5个配置文件（即使是那些具有虚假性的配置文件）
5）退出（刚完成程序）
所以我已经编写了一些代码，我为配置文件创建了5个数组，但是当我选择创建配置文件时，我开始从profile1创建它，之后prof命令将返回主菜单如果我想创建另一个配置文件只是做同样的，但我无法创建第二个配置文件，我只是一遍又一遍地覆盖第一个数据，我找不到传递给每个数组的方法，直到第五个阵列。
这是我的代码：
.data
## STRINGs MAIN MENU ##
welcome: .asciiz "\n\n\n********* WELCOME ***********\n\n\n\n"
objective: .asciiz "******************************************************\n\n the program task is to create max 5 profiles
and and being able to modify the data of your own
profile,erase your profile ,search for visibiles profiles
and output all the profiles even not visibles ones\n\n******************************************************"
choose: .asciiz "\n\n- what you wanna do?\n"
options: .asciiz "\n0)Create Profile\n1)Search Profile\n2)Erase Profilo\n3)Show all profiles\n4)Esci\n"
answer: .asciiz "\n\nAnswer:"
exitMsg: .asciiz "\n\nBYE BYE\n"
msgError: .asciiz "\n\n\nERROR, only numbers from 0-4n\n"
## STRING CREATE PROFILE##
Header: .asciiz "\n** CREATE PROFILE ** \n"
name: .asciiz "\n\n- Nome:"
surname: .asciiz "\n- Cognome:"
interests: .asciiz "\n\n- Interessi:\n"
userID: .asciiz "\n- UserID:"
password: .asciiz "\n- Password:"
email: .asciiz "\n\n- Email:"
visibility: .asciiz "\n- Visibilita:"
succes: .asciiz "\n\n****** PROFILE CREATED ******\n\n"
optionsProfile: .asciiz "\n\n0)Modify Profile 1)Go back to main menu\n\n"
## STRINGS SEARCH ##
nameSearch : .space 256
surnameSearch : .space 256
## STRINGS SHOW PROFILES ##
userID_mp: .asciiz "\nUserID:"
name_mp: .asciiz "\nName:"
surname_mp: .asciiz "\nSurname:"
interests_mp: .asciiz "\nInterests:"
newLine: .asciiz "\n"
profile1: .asciiz "\n\n\n\n** Profilo 1\n"
profile2: .asciiz "\n\n* Profilo 2\n"
profile3: .asciiz "\n\n* Profilo 3\n"
profile4: .asciiz "\n\n* Profilo 4\n"
profile5: .asciiz "\n\n* Profilo 5\n"
profile6: .asciiz "\n\n* Profilo 6\n"
profile7: .asciiz "\n\n* Profilo 7\n"
profile8: .asciiz "\n\n* Profilo 8\n"
profile9: .asciiz "\n\n* Profilo 9\n"
profile10: .asciiz "\n\n* Profilo 10\n"
newLine3: .asciiz "\n\n\n"
backToMainMenu: .asciiz "\n\n\n0)Back to main menu\n"
## PROFILES ##
Profile1: .word name1,surname1,interests1,userID1,visibility1,email1,password1
name1: .space 256
surname1: .space 256
interests1: .space 256
userID1: .space 256
visibility1: .space 256
email1: .space 256
password1: .space 256
Profile2: .word name2,surname2,interests2,userID2,visibility2,email2,password2
name2: .space 256
surname2: .space 256
interests2: .space 256
userID2: .space 256
visibility2: .space 256
email2: .space 256
password2: .space 256
Profile3: .word name3,surname3,interests3,userID3,visibility3,email3,password3
name3: .space 256
surname3: .space 256
interests3: .space 256
userID3: .space 256
visibility3: .space 256
email3: .space 256
password3: .space 256
Profile4: .word name4,surname4,interests4,userID4,visibility4,email4,password4
name4: .space 256
surname4: .space 256
interests4: .space 256
userID4: .space 256
visibility4: .space 256
email4: .space 256
password4: .space 256
Profile5: .word name5,surname5,interests5,userID5,visibility5,email5,password5
name5: .space 256
surname5: .space 256
interests5: .space 256
userID5: .space 256
visibility5: .space 256
email5: .space 256
password5: .space 256
.text
main:
Main_Menu:
## the main menu functions ##
li $v0,4
la $a0,welcome
syscall
li $v0,4
la $a0,objective
syscall
li $v0,4
la $a0,choose
syscall
li $v0,4
la $a0,options
syscall
li $v0,4
la $a0,answer
syscall
## READ INPUT AND SAVES IN $t0 ##
li $v0,5
syscall
move $t0,$v0 # salva la scelta in t0
## CHOOSE ONE FUNCTION##
## counter?
li $s0,1
li $t1, 0
beq $t0, $t1, Create_Profile # Create a Profile starting from 1 ending 5
li $t1, 1
beq $t0, $t1, Search_Profile # Search a Public profile
li $t1, 2
beq $t0, $t1, Erase_Profile # Erase your profile
li $t1, 3
beq $t0, $t1, Show_Profiles # Show all profiles
li $t1, 4
beq $t0, $t1, Exit # Just finish
la $a0, msgError
li $v0,4
syscall
j Main_Menu
## FUNCTIONS ##
Create_Profile:
## start from 1 , come back to main_menu and create the second , come back again and the third...
li $s5,1
li $t0,1
beq $s5,$t1,createProfile1
li $t1,2
beq $s5,$t1,createProfile2
## and the rest
createProfile1:
li $t0,1
addi $s5, $s5, 4
li $v0,4
la $a0,name
syscall
la $a0, name1
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,surname
syscall
la $a0, surname1
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,interests
syscall
la $a0, interests1
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,userID
syscall
la $a0, userID1
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,password
syscall
la $a0, password1
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,email
syscall
la $a0, email1
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,visibility
syscall
la $a0, visibility1
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0, succes
syscall
j options_Profile
createProfile2:
li $t0,2
li $v0,4
la $a0,nome
syscall
la $a0, nome2
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,cognome
syscall
la $a0, cognome2
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,interessi
syscall
la $a0, interessi2
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,userID
syscall
la $a0, userID2
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,password
syscall
la $a0, password2
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,email
syscall
la $a0, email2
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,visibilita
syscall
la $a0, visibilita2
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0, succes
syscall
j options_Profile
createProfile3:
createProfile4:
createProfile5:
createProfile6:
createProfile7:
createProfile8:
createProfile9:
createProfile10:
options_Profile:
## show some options
li $v0,4
la $a0, optionsProfile
syscall
li $v0,4
la $a0,answer
syscall
## read an Integer
li $v0,5
syscall
move $t0,$v0
li $s1,1
beq $t0,$s1,Main_Menu
li $s1,0
beq $t0,$s1,Modify_Profile
Modify_Profile:
li $t1,1
beq $t0,$t1,Mod_Profile1
li $t1,2
beq $t0,$t1,Mod_Profile1
Mod_Profile1:
## Just do the same like when you create a profile
li $t0,1
addi $s5, $s5, 4
li $v0,4
la $a0,name
syscall
la $a0, name1
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,surname
syscall
la $a0, surname1
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,interests
syscall
la $a0, interests1
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,userID
syscall
la $a0, userID1
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,password
syscall
la $a0, password1
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,email
syscall
la $a0, email1
li $a1, 256
li $v0, 8
syscall
li $v0,4
la $a0,visibility
syscall
la $a0, visibility1
li $a1, 256
li $v0, 8
syscall
la $a0, backToMainMenu ## opzion torna al menu p...
li $s0,4
syscall
li $v0,5
syscall
move $t0,$v0
li $s1,0
beq $t0,$s1,Main_Menu
Search_Profile:
la $a0, nome
li $v0,4
syscall
la $a0, nomeCerca
li $a1, 256
li $v0, 8
syscall
la $a0, cognome
li $v0,4
syscall
la $a0, cognomeCerca
li $a1, 256
li $v0, 8
syscall
Erase_Profile:
Show_Profiles:
li $t0,1
beq $t0,1,Show_Profile1
addi $t0, $t0, 4
beq $t0,2,Show_Profile2
addi $t0, $t0, 4
beq $t0,3,Show_Profile3
addi $t0, $t0, 4
beq $t0,4,Show_Profile4
addi $t0, $t0, 4
beq $t0,5,Show_Profile5
addi $t0, $t0, 4
beq $t0,11,go_MainMenu
Show_Profile1:
la $a0, profile1
li $v0,4
syscall
la $s0, Profile1
la $a0,userID_mp
li $v0,4
syscall
lw $t1,12($s0)
la $a0,0($t1)
li $v0,4
syscall
la $a0,name_mp
li $v0,4
syscall
lw $t1,0($s0)
la $a0,0($t1)
li $v0,4
syscall
la $a0,surname_mp
li $v0,4
syscall
lw $t1,4($s0)
la $a0,0($t1)
li $v0,4
syscall
la $a0,interests_mp
li $v0,4
syscall
lw $t1,8($s0)
la $a0,0($t1)
li $v0,4
syscall
Show_Profile2:
la $a0, profile2
li $v0,4
syscall
la $s0, Profile2
la $a0,userID_mp
li $v0,4
syscall
lw $t1,12($s0)
la $a0,0($t1)
li $v0,4
syscall
la $a0,name_mp
li $v0,4
syscall
lw $t1,0($s0)
la $a0,0($t1)
li $v0,4
syscall
la $a0,surname_mp
li $v0,4
syscall
lw $t1,4($s0)
la $a0,0($t1)
li $v0,4
syscall
la $a0,interests_mp
li $v0,4
syscall
lw $t1,8($s0)
la $a0,0($t1)
li $v0,4
syscall
Show_Profile3:
la $a0, profile3
li $v0,4
syscall
la $s0, Profile3
la $a0,userID_mp
li $v0,4
syscall
lw $t1,12($s0)
la $a0,0($t1)
li $v0,4
syscall
la $a0,name_mp
li $v0,4
syscall
lw $t1,0($s0)
la $a0,0($t1)
li $v0,4
syscall
la $a0,surname_mp
li $v0,4
syscall
lw $t1,4($s0)
la $a0,0($t1)
li $v0,4
syscall
la $a0,interests_mp
li $v0,4
syscall
lw $t1,8($s0)
la $a0,0($t1)
li $v0,4
syscall
Show_Profile4:
la $a0, profile4 ## number
li $v0,4
syscall
la $s0, Profile4 ## adress
la $a0,userID_mp
li $v0,4
syscall
lw $t1,12($s0)
la $a0,0($t1)
li $v0,4
syscall
la $a0,name_mp ## name
li $v0,4
syscall
lw $t1,0($s0) ## adress
la $a0,0($t1)
li $v0,4
syscall
la $a0,surname_mp ## surname
li $v0,4
syscall
lw $t1,4($s0)
la $a0,0($t1)
li $v0,4
syscall
la $a0,interests_mp ## interests
li $v0,4
syscall
lw $t1,8($s0)
la $a0,0($t1)
li $v0,4
syscall
Show_Profile5:
la $a0, profile5 ## number profile
li $v0,4
syscall
la $s0, Profile5 ## adress
la $a0,userID_mp
li $v0,4
syscall
lw $t1,12($s0)
la $a0,0($t1)
li $v0,4
syscall
la $a0,name_mp ## nome
li $v0,4
syscall
lw $t1,0($s0) ## direccion de nome1
la $a0,0($t1) ## stampa nome1
li $v0,4
syscall
la $a0,surname_mp ## cognome
li $v0,4
syscall
lw $t1,4($s0)
la $a0,0($t1)
li $v0,4
syscall
la $a0,interests_mp ## interessi
li $v0,4
syscall
lw $t1,8($s0)
la $a0,0($t1)
li $v0,4
syscall
go_MainMenu:
la$a0,backToMainMenu
li $s0,4
syscall
li $v0,5
syscall
move $t0,$v0
li $s1,0
beq $t0,$s1,Main_Menu
Exit:
la $a0, exitMsg
li $v0, 4
syscall
li $v0,10 # exit
syscall
我在SPIM模拟器中运行我的程序。
抱歉我的英文不好答案 0 :(得分：1)
您正在为每个配置文件创建单独的功能。但是，假设您必须拥有10,000个单独的配置文件而不仅仅是5个？
使用等效的C结构数组会更容易。在asm，a＆＃34; struct＆＃34;被表征为来自基地址的偏移/长度。这是一个重要的概念，因为它使您的程序更多更简单
我重新设计了你的程序，使用一个结构和一个使用sbrk系统调用动态分配的数组。
我用于偏移定义的语法是spim理解的语法。如果您使用mars作为模拟器，我可以重新生成并重新下载我的代码。
我创建了所有五个基本操作。我没有处理可见性，因为我不明白它的含义[确切]和字段值是什么（例如可见 - ＆gt;＆＃34; true＆＃34;或＆＃34; 1＆＃34;？等。）
我尽可能地保持对你的代码的忠诚，但我不得不改变很多。
另外，在我看到你的另一个问题之前，搜索标准对我来说并不是很清楚。搜索会提示输入要匹配的字符串。然后它尝试匹配配置文件中的所有字段[vs.提示输入给定的字段名称]。这可能不是您想要/需要的，但它实现起来更简单，并且通常是某些系统运行的方式。
无论如何，这里的代码[请原谅无偿的风格清理]：
# global registers:
# s0 -- main menu selection
# s1 -- profile number (1-n)
# s2 -- pointer to profile
# s3 -- pointer to profile field
# s4 -- pointer to field processing function
.data
sdata:
#@+
# NOTE: this is what a C struct for a profile would look like
# struct profile {
# char prof_name[256];
# char prof_surname[256];
# char prof_interests[256];
# char prof_userID[256];
# char prof_visibility[256];
# char prof_email[256];
# char prof_password[256];
# };
#@-
# this is how we define it for mips -- as offsets from a base register
prof_name = 0
prof_name_sizeof = 256
prof_surname = prof_name + prof_name_sizeof
prof_surname_sizeof = 256
prof_interests = prof_surname + prof_surname_sizeof
prof_interests_sizeof = 256
prof_userID = prof_interests + prof_interests_sizeof
prof_userID_sizeof = 256
prof_visibility = prof_userID + prof_userID_sizeof
prof_visibility_sizeof = 256
prof_email = prof_visibility + prof_visibility_sizeof
prof_email_sizeof = 256
prof_password = prof_email + prof_email_sizeof
prof_password_sizeof = 256
profile_sizeof = prof_password + prof_password_sizeof
###.eqv PROFMAX 5
profiles: .word 0 # pointer to profile array
# # STRINGs MAIN MENU ##
welcome: .asciiz "\n\n********* WELCOME ***********\n\n"
objective: .ascii "******************************************************\n"
.ascii "the program task is to create max 5 profiles\n"
.ascii "and being able to modify the data of your own profile\n"
.ascii "erase your profile\n"
.ascii "search for visibile profiles\n"
.ascii "and output all the profiles even not visibles ones\n\n"
.asciiz "******************************************************\n"
choose: .asciiz "\n\n- what you wanna do?\n"
options: .ascii "0) Create Profile\n"
.ascii "1) Search Profile\n"
.ascii "2) Erase Profile\n"
.ascii "3) Show all profiles\n"
.asciiz "4) Esci\n"
answer: .asciiz "\n\nAnswer: "
exitMsg: .asciiz "\n\nBYE BYE\n"
msgError: .asciiz "\n\n\nERROR, only numbers from 0-4n\n"
name: .asciiz "Nome"
surname: .asciiz "Cognome"
interests: .asciiz "Interessi"
userID: .asciiz "UserID"
password: .asciiz "Password"
email: .asciiz "Email"
visibility: .asciiz "Visibilita"
# field name strings
succes: .asciiz "\n\n****** PROFILE CREATED ******\n\n"
colon: .asciiz ": "
newLine: .asciiz "\n"
newLine3: .asciiz "\n\n\n"
profno_msg: .asciiz "Enter Profile Number: "
profmsg: .asciiz "\n* Profilo "
showprof_msg: .asciiz "Profiles are:\n"
search_msg: .asciiz "Enter field data to search for: "
search_string: .space 40 # string to match on
.text
.globl main
main:
li $a0,5 # number of profiles
li $t0,profile_sizeof # sizeof a single profile
mul $a0,$a0,$t0 # total space needed
# allocate the space we need and save a pointer to it
li $v0,9 # sbrk
syscall
sw $v0,profiles # pointer to profiles
Main_Menu:
# # the main menu functions ##
li $v0,4
la $a0,welcome
syscall
li $v0,4
la $a0,objective
syscall
li $v0,4
la $a0,choose
syscall
li $v0,4
la $a0,options
syscall
li $v0,4
la $a0,answer
syscall
li $v0,5
syscall
move $s0,$v0 # save the menu choice
la $ra,Main_Menu # set return address
# # CHOOSE ONE FUNCTION##
beq $s0,0,Create_Profile # Create a Profile starting from 1 ending 5
beq $s0,1,Search_Profiles # Search a Public profile
beq $s0,2,Erase_Profile # Erase your profile
beq $s0,3,Show_Profiles # Show all profiles
beq $s0,4,Exit # Just finish
la $a0,msgError
li $v0,4
syscall
j Main_Menu
# Create_Profile -- create a profile
Create_Profile:
addiu $sp,$sp,-4
sw $ra,0($sp)
jal profno_query # get profile number to create/modify
# # start from 1 , come back to main_menu and create the second ,
# come back again and the third...
la $s4,fieldget # get address of field function
jal profile_operation
li $v0,4
la $a0,succes
syscall
###jal Modify_Profile
lw $ra,0($sp)
addiu $sp,$sp,4
jr $ra
# Search_Profiles -- search all profiles for match
Search_Profiles:
addiu $sp,$sp,-4
sw $ra,0($sp)
# prompt user for field to search on
la $a0,search_msg
li $v0,4 # puts
syscall
# get field data to search for
la $a0,search_string
li $a1,40
jal rdline
li $s1,1
Search_Profiles_loop:
# probe for match
la $s4,fieldsearch # get address of field function
jal profile_operation
beqz $t9,Search_Profiles_nomatch
# show this matching profile
jal profile_header
la $s4,fieldshow # get address of field function
jal profile_operation
Search_Profiles_nomatch:
addi $s1,$s1,1
li $t0,5
ble $s1,$t0,Search_Profiles_loop
lw $ra,0($sp)
addiu $sp,$sp,4
jr $ra
# Erase_Profile -- erase profile based on profile number
Erase_Profile:
addiu $sp,$sp,-4
sw $ra,0($sp)
jal profno_query # get profile number
la $s4,fielderase # get address of field function
jal profile_operation # perform the field erase on all fields
lw $ra,0($sp)
addiu $sp,$sp,4
jr $ra
# Show_Profiles -- show all profiles
Show_Profiles:
addiu $sp,$sp,-4
sw $ra,0($sp)
la $a0,showprof_msg
li $v0,4 # puts
syscall
li $s1,1
Show_Profiles_loop:
jal profile_header # output the profile header
la $s4,fieldshow # get address of field function
jal profile_operation
addi $s1,$s1,1
li $t0,5
ble $s1,$t0,Show_Profiles_loop
lw $ra,0($sp)
addiu $sp,$sp,4
jr $ra
# Exit -- exit program
Exit:
la $a0,exitMsg
li $v0,4
syscall
li $v0,10 # exit
syscall
# profno_query -- prompt user for profile number
profno_query:
# prompt user for profile number
la $a0,profno_msg
li $v0,4 # puts
syscall
# get profile number
li $v0,5 # rdint
syscall
move $s1,$v0
jr $ra
# profile_operation -- perform operation on profile
#
# arguments:
# s0 -- main menu selection
# s1 -- profile number (1-n)
#
# registers:
# s2 -- pointer to profile
profile_operation:
addiu $sp,$sp,-4
sw $ra,0($sp)
jal findprof
jal field_operations
lw $ra,0($sp)
addiu $sp,$sp,4
jr $ra
# field_operations -- perform operation on all fields
field_operations:
addiu $sp,$sp,-4
sw $ra,0($sp)
li $t9,0 # continue through all
la $a0,name # prompt string
li $a2,prof_name_sizeof # field size
li $a3,prof_name # field offset
jal field_operation
bnez $t9,fields_done # stop if requested
la $a0,surname # prompt string
li $a2,prof_surname_sizeof # field size
li $a3,prof_surname # field offset
jal field_operation
bnez $t9,fields_done # stop if requested
la $a0,interests # prompt string
li $a2,prof_interests_sizeof # field size
li $a3,prof_interests # field offset
jal field_operation
bnez $t9,fields_done # stop if requested
la $a0,userID # prompt string
li $a2,prof_userID_sizeof # field size
li $a3,prof_userID # field offset
jal field_operation
bnez $t9,fields_done # stop if requested
la $a0,password # prompt string
li $a2,prof_password_sizeof # field size
li $a3,prof_password # field offset
jal field_operation
bnez $t9,fields_done # stop if requested
la $a0,email # prompt string
li $a2,prof_email_sizeof # field size
li $a3,prof_email # field offset
jal field_operation
bnez $t9,fields_done # stop if requested
la $a0,visibility # prompt string
li $a2,prof_visibility_sizeof # field size
li $a3,prof_visibility # field offset
jal field_operation
bnez $t9,fields_done # stop if requested
fields_done:
lw $ra,0($sp)
addiu $sp,$sp,4
jr $ra
# field_operation -- perform operation on single field
#
# arguments:
# s0 -- operation to perform
# s1 -- profile number (1-n)
# s2 -- pointer to profile
#
# a0 -- pointer to prompt string
# a2 -- field size
# a3 -- field offset with struct
#
# registers:
# s3 -- pointer to profile field
field_operation:
addiu $sp,$sp,-4
sw $ra,0($sp)
addu $s3,$s2,$a3 # point to field
jalr $s4 # call field function
lw $ra,0($sp)
addiu $sp,$sp,4
jr $ra
# fieldget -- prompt user for field value
#
# arguments:
# a0 -- pointer to prompt string
# a1 -- pointer to field
# a2 -- field size
# a3 -- field offset with struct
fieldget:
addiu $sp,$sp,-4
sw $ra,0($sp)
# output prompt string
li $v0,4 # puts
syscall
la $a0,colon
li $v0,4 # puts
syscall
# read in field
move $a0,$s3
move $a1,$a2
jal rdline
lw $ra,0($sp)
addiu $sp,$sp,4
jr $ra
# fieldshow -- show field value
#
# arguments:
# a0 -- pointer to prompt string
# a2 -- field size
# a3 -- field offset with struct
fieldshow:
li $v0,4
syscall
la $a0,colon
li $v0,4 # puts
syscall
move $a0,$s3
li $v0,4
syscall
la $a0,newLine
li $v0,4
syscall
jr $ra
# fielderase -- erase field
#
# arguments:
# a2 -- field size
# a3 -- field offset with struct
fielderase:
move $a0,$s3
fielderase_loop:
sb $zero,0($a0)
addi $a0,$a0,1 # increment field pointer
addi $a2,$a2,-1 # decrement field size -- done?
bnez $a2,fielderase_loop # no, loop
jr $ra
# fieldsearch -- search field for match
#
# arguments:
# a2 -- field size
# a3 -- field offset with struct
fieldsearch:
addiu $sp,$sp,-4
sw $ra,0($sp)
move $t0,$s3 # get address of field data
la $t1,search_string # string to match on
fieldsearch_loop:
lb $t2,0($t0) # get field character
addiu $t0,$t0,1
lb $t3,0($t1) # get string character
addiu $t1,$t1,1
bne $t2,$t3,fieldsearch_done # mismatch? if yes, done -- no match
bnez $t2,fieldsearch_loop # EOS? if no, loop
li $t9,1 # say field matched
fieldsearch_done:
lw $ra,0($sp)
addiu $sp,$sp,4
jr $ra
# findprof -- find profile
#
# RETURNS:
# s2 -- pointer to profile
#
# arguments:
# s1 -- profile number
findprof:
addi $t0,$s1,-1 # get index
li $t1,profile_sizeof # size of profile
mul $t0,$t0,$t1 # get offset into profile list
lw $s2,profiles # base pointer to profiles
addu $s2,$s2,$t0 # get pointer to profile
jr $ra
# profile_header -- output profile header message
profile_header:
la $a0,newLine
li $v0,4 # puts
syscall
la $a0,profmsg
li $v0,4 # puts
syscall
# output the profile number
move $a0,$s1
li $v0,1 # prtint
syscall
la $a0,newLine
li $v0,4 # puts
syscall
jr $ra
# rdline -- read user response
#
# arguments:
# a0 -- pointer to string buffer
# a1 -- length of string buffer
rdline:
li $v0,8 # gets
syscall
move $t1,$a0
lb $t2,newLine
# strip newline
rdline_loop:
lb $t0,0($t1) # get char -- is it newline?
addiu $t1,$t1,1 # increment pointer
bne $t0,$t2,rdline_loop # no, loop
sb $zero,-1($t1) # strip the newline
jr $ra
.data
edata: