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 Sra, 4 ($sp) add $sp, $sp, 8 jr $ra printit: li $v0, 4 la $a0, newline syscall li $v0, 1 move $a0, $s0 syscall jr $ra a. What is the output of this program displayed on the screen? b. What is the type of the instruction Iw $s0,mynum? provide its machine code.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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d. Provide memory addresses of the following.
The variable mynum
I.
I.
The 2nd instruction in .text segment that is jal increment
III.
The 3rd instruction in increment procedure that is sw $ra,4($sp)
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
6.
g.
What are the roles of register $0 and $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:d. Provide memory addresses of the following. The variable mynum I. I. The 2nd instruction in .text segment that is jal increment III. The 3rd instruction in increment procedure that is sw $ra,4($sp) 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 6. g. What are the roles of register $0 and $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?
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
INOVE Sa0, $s0
syscall
jr $ra
a. What is the output of this program displayed on the screen?
b.
What is the type of the instruction Iw $0,mynum? provide its machine code.
c. How does it affect the program if the procedure increment doesn't reserve register $ra
with the help of stack?
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 INOVE Sa0, $s0 syscall jr $ra a. What is the output of this program displayed on the screen? b. What is the type of the instruction Iw $0,mynum? provide its machine code. c. How does it affect the program if the procedure increment doesn't reserve register $ra with the help of stack?
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