). Following is a program that implements nested functions. Write the given code into MARS and answer the following questions. - data mynum: . word 25 newline: .asciiz "\n" - text Iw $s0, mynum jal increment jal printit li $v0, 10 syscall increment: sub $sp, $sp, 8 Sw $s0, 0 ($sp) Sw $ra, 4 ($sp) addi $s0, $s0, 25

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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i). Following is a program that implements nested functions. Write the given code into MARS
and answer the following questions.
. data
mynum: . word 25
newline: .asciiz "\n"
. text
Iw $s0, mynum
jal increment
jal printit
li $v0, 10
syscall
increment:
sub $sp, $sp, 8
sw $s0, 0 ($sp)
sw $ra, 4 ($sp)
addi $s0, $s0, 25
jal printit
Iw $s0, 0 ($sp)
Iw $ra, 4 ($sp)
add $sp, $sp, 8
jr $ra
printit:
li $v0, 4
la Sa0, newline
syscall
li $v0, 1
move $a0, $s0
syscall
jr $ra
Transcribed Image Text:i). Following is a program that implements nested functions. Write the given code into MARS and answer the following questions. . data mynum: . word 25 newline: .asciiz "\n" . text Iw $s0, mynum jal increment jal printit li $v0, 10 syscall increment: sub $sp, $sp, 8 sw $s0, 0 ($sp) sw $ra, 4 ($sp) addi $s0, $s0, 25 jal printit Iw $s0, 0 ($sp) Iw $ra, 4 ($sp) add $sp, $sp, 8 jr $ra printit: li $v0, 4 la Sa0, newline syscall li $v0, 1 move $a0, $s0 syscall jr $ra
e. What is the value of $Sp, PC and $ra after executing the 3rd instruction in increment
procedure sw $ra,4($sp)?
f. Provide the reason that why assembler divides sub $sp, $sp,8 into two different
instructions given as:
addi $1,$0,0x00000008
sub $29,$29,$1
h. The instruction la $a0,newline is implemented with two different instructions
lui $1,0x00001001 and ori $4, $1, Ox00000004. Provide details for these instructions?
Transcribed Image Text:e. What is the value of $Sp, PC and $ra after executing the 3rd instruction in increment procedure sw $ra,4($sp)? f. Provide the reason that why assembler divides sub $sp, $sp,8 into two different instructions given as: addi $1,$0,0x00000008 sub $29,$29,$1 h. The instruction la $a0,newline is implemented with two different instructions lui $1,0x00001001 and ori $4, $1, Ox00000004. Provide details for these instructions?
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