##### Help me please no copy paste !! The file assign2.asm holds a partial progr
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Question
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Help me please no copy paste !!
The file assign2.asm holds a partial program. The purpose of the program is to read in a list of 10 integers and then print them out. There are 4 functions in the program; 2 of which you are to complete.
Main: This function will call getdata and print. Main is complete and should not be changed.
Getdata: This function reads 10 integers and stores them into memory. There is one parameter ($a0) which holds the address of where the list of numbers is to be stored. Getdata calls the function printstr to print the prompt. Getdata is complete and should not be changed.
Printstr: This function is to print a string. There is one parameter ($a0) which holds the address of the string to print. You are to complete this function so it performs as required. This function is call from the getdata function and the print function.
Print: This function is to print the list of integers. The integers must all be on the same line of output and be separated by a comma and space (already in the data segment). See the example input and output below. This function must call the printstr function to print the comma string. Remember that as this function calls another, it must save and restore the $ra.
Specifics:
Use only the instructions covered to date.
Do not use pseudo-instructions. See the information under MARS for preventing the use of pseudo-instructions.
Make sure that your print function calls the printstr function correctly and that the stack is used correctly.
Documentation:
Comment the beginning of your programs with your name, class, and assignment number.
Comment every instruction.
Assignment submittal:
Upload your assembly language program (.asm file) using this link on Blackboard.
Hints on getting started:
Load the assign2.asm file into the MARS simulator
Write the code for printstr and make sure that it works correctly.
Write the code for print.
Sample input and output. Note there is no comma after the last number.
Enter a number 1
Enter a number 2
Enter a number 9
Enter a number 11
Enter a number 99
Enter a number 12
Enter a number 24
Enter a number 90
Enter a number 17
Enter a number 82
1, 2, 9, 11, 99, 12, 24, 90, 7, 82
Modify the below code to complete the instructions above
--The code below gives an answer, but something is wrong.
--Please do not use pseudo instructions.
.data
.space 40 # set aside 40 bytes for 10 integers
prompt: .asciiz "Enter a number " # address 0x10010028
comma: .asciiz ", " # address 0x10010038
.globl main
.text
main:
lui $a0, 0x1001 # get start of data segment
jal getdata # call getdata function
lui $a0, 0x1001 # get start of data segment
jal print # call print function
end: ori $v0, $0, 10 # set command to exit
syscall # end program
# printstr
# paramters: $a0 holds address of string to print
# purpose: print the string parameter
printstr:
ori $v0, $0, 4 #command to print string at $a0
syscall
jr $ra #return from call
getdata:
addi $sp, $sp, -4 # allocate space on stack
sw $ra, 0($sp) # save $ra
ori $t1, $a0, 0 # address of array
lui $t1, 0x1001 #start of data
ori $a0, $a0, 0x0028 # address of prompt
ori $t0, $0, 10 # counter
top: beq $t0, $0, ret # while not 0
jal printstr # call function to print prompt
ori $v0, $0, 5 # set command to read integer
syscall # read int
sw $v0, 0($t1) # save int in memory
addi $t1, $t1, 4 # increment to next location
addi $t0, $t0, -1 # decrement counter
j top # repeat
ret: lw $ra, 0($sp) # restore return address
addi $sp, $sp, 4 # clean up stack
jr $ra # return from call
# print
# parameter: $a0 holds address of list in memory
# purpose: print the list separated by commas
print:
addi $t2, $t2, 10
jal loop
loop: beq $t0, $t2, end
lui $t3, 0x1001
or $a0, $0, $t3
ori $v0, $0, 1
syscall
addi $t3, $t3, 4
ori $a0, $a0, 0x0038
ori $v0, $0, 4 #command to print string at $a0
syscall
addi $t0, $t0, 1
j top
Explanation / Answer
printstr:
la $a0, prompt # address of prompt goes in
li $v0, 4 # service code for print string
syscall
jr $ra #return from call by putting value to ra
print:
addi $t2, $t2, 10
addi $t0, $t0,1 #increment by 1 before entering into loop
ori $v0, $0, 4 #print 1st value ,as loop start from 2nd value
syscall
jal loop #jump to loop
loop: beq $t0, $t2, end
lui $t3, 0x1001
or $a0, $0, $t3
ori $v0, $0, 1
syscall
addi $t3, $t3, 4
ori $a0, $a0, 0x0038
ori $v0, $0, 4 #command to print string at $a0
syscall
addi $t0, $t0, 1
j top
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