This assignment consists of two questions. The first question has multiple parts

Question

This assignment consists of two questions. The first question has multiple parts. Create a single file with your answers to the questions and submit your work using the link on Blackboard. Your answer must be in one of the following formats: .txt, .pdf, .doc 1. Use the following program for this question. .data .half 7, 3 num: .word 9 .glob .text main: main lui sto, 0x1001 top: lw St1, -4 ($t0) beq $s0, $s2, end jal func add $s0, s1, $t0 andi $80, $0, 0xFFFF top bne $s0, $0, top end: func: s11 Svo, $t1, 4 jr 2 Sra a. There are 5 labels in this code. If the .data section starts at 0x 10010000 and the .text starts at 0x00400400, what is the value of each label? Include all labels from the program. 2.5 points

Explanation / Answer

1) Use the program to answer

a) The above program has five labels :- num,main,top,end and func

      Values of label:-

       num=0x10010004

       main=0x00400400

     top=0x00400404

      end=0x00400420

      func=0x00400420

explanation: labels always replaced with the memory address .

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b) Addressing modes:-

   lui $t0,0x1001 --> Immediate addressing mode.

   lw $t1,-4($t0) --> Base addressing mode

beq $s0,$s2,end --> PC relative addressing mode

jal func --> pseudo direct addressing mode

add $s0,$s1,$t0 --> Register addressing mode

andi $s0,$0,0xFFFF -- >Immediate adressing model

j top --> pseudo direct addressing mode

bne $s0,$0,top--> PC relative addressing mode

sll 4v0,$t1,4 --> Immediate adressing model

jr $ra --> Register direct addressing mode

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c) machine code in hex

lui $t0,0x1001 --> 0x3c081001

   lw $t1,-4($t0) --> 0x8d09fffc

beq $s0,$s2,end --> 0x12120005

jal func --> 0x0c100008

add $s0,$s1,$t0 --> 0x02288020

andi $s0,$0,0xFFFF -- >0x3010ffff

j top --> 0x081000001

bne $s0,$0,top--> 0x1600fff9

sll 4v0,$t1,4 --> 0x00091100

jr $ra --> 0x03e00008

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2) Decode the given code

addi $t1,$0,14

and $t2,$0,$0

add $t2,$t2,$t1

sll $t1,$t1,2

bne $t1,$0,label

lui $t0,0x1001

sw $t1,0($t0)

label:

Explanation:-

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