MIPS

For this program, write a routine which calculates the dot product of two vectors. The accompanying boilerplate code should begin your project. Do not change anything in the boilerplate code when you turn in the assignment. If would be safe to simply replace it if you made modifications for testing purposes. You are absolutely welcome to study the boilerplate code for ideas on how to write your code, but this isnt mandatory.

The subroutine is named Dot and is found at the end of the boilerplate code. The base addresses of the two vectors are in $a0 and $a1. The length of the vectors is in $a2. Place the return value of your subroutine in $v0. The correct answer for the given vectors is 6060 (decimal).

#DO NOT CHANGE ANY CODE BELOW THIS COMMENT

.data

Separator:

.asciiz ", "

crlf:

.asciiz " "

V1Name:

.asciiz "Vector 1: "

V2Name:

.asciiz "Vector 2: "

DotName: "Dot Product:"

VLength:

.word 0x12

Vector1:

.word 39, 11, 4, 7, 17, 9, 24, 11, 4, 2, 28, 37, 13, 7, 5, 2, 45, 49

Vector2:

.word 6, 17, 39, 3, 19, 25, 14, 33, 25, 43, 5, 28, 36, 47, 23, 31, 8, 31

.text

la $a0, V1Name

addi $v0, $0, 4

syscall

la $a0, Vector1

lw $a1, VLength

jal PrintVector

la $a0, V2Name

addi $v0, $0, 4

syscall

la $a0, Vector2

lw $a1, VLength

jal PrintVector

la $a0, DotName

addi $v0, $0, 4

syscall

la $a0, Vector1

la $a1, Vector2

lw $a2, VLength

jal Dot

addi $a0, $v0, 0

addi $v0, $0, 1

syscall

la $a0, crlf

addi $v0, $0, 4

syscall

addi $v0, $0, 10

syscall

PrintVector:

# $a0 - address of vector

# $a1 - number of elements

# $t0 - copy of $a0 since we have to overwrite it to do a syscall

# $t1 - manipulatable copy of $a0

# $t2 - loo counter

addi $t0, $a0, 0

addi $t1, $a0, 0

addi $t2, $0, 0 #initialize counter

PrintLoop:

lw $a0, 0($t1)

addi $v0, $0, 1

syscall

addi $t2, $t2, 1

beq $t2, $a1, PrintDone

addi $t1, $t1, 4

la $a0, Separator

addi $v0, $0, 4

syscall

j PrintLoop

PrintDone:

la $a0, crlf

addi $v0, $0, 4

syscall

addi $a0, $t0, 0 # restore $a0's original value

jr $ra

#DO NOT CHANGE ANY CODE ABOVE THIS COMMENT

#BELOW IS MY ATTEMPT AT THE PROJECT - CAN YOU PLEASE ASSIST ME IN ANY MISTAKES

Dot:

# $a0 - address of vector 1

# $a1 - address of vector 2

# $a2 - number of elements

# $v0 - dot product

# your code goes here

#load word Vector1 and Vector2

lw $t0, 18, ($a0) #load address Vector1

lw $t1, 18, ($a1) #load address Vector2

addi $v0, $0, 0

# loop through the number of elements

loop:

add $v0 , $v0, $t0 #add contect of Vectors to $t0

addi $t0, $t0, 1 #increment

bne $t0, $0, loop #return to loop

mul $t2, $t0, $t1 #multiply Vector1 by Vector2

add $t3, $t3, $t2 #add multiplication Vector1 to Vector2

jr $ra #return to boilerpoint