How do I write MIPS code for vector multiplication - cpu-architecture

Question

Define vector mul(vector v, float t). It returns a vector by multiplying it by t.
If a=4i+3j+12k then mul(a,0.5) will return 2i+1.5j+6k.
Here's the code I've written:
.globl main
.text
main:
la $s0,t #loading t into s1
lw $s1,0($s0)
ori $s2,$zero,0
la $s3,v
#la $s0,v
#lw $s3,0($s0)
la $s0,s
lw $s4,0($s0)
jal f
f:
#if <cond>
bge $s2,$s4,DONE
#<for body>
lw $s5, 0($s3)
mul $s3,$s3,$s1
li $v0,10
syscall
j UPDATE
UPDATE:
addi $s2,$s2,1 #i=i+1
addi $s3,$s3,4 #moving address 4 bytes since int
j f
DONE:
li $v0,10
syscall
.data
s: .word 3
v: .word 4 3 12 #hard coding vector coefficients
t: .word 2 #value to be multiplied by
When I run this on SPIM simulator, the registers don't produce any value. Is my code wrong or do I need to add something?

Answer 1

mul $s3,$s3,$s1 : this instruction is wrong because $s3 register contains the address of the vector and no the value .
li $v0,10 ; syscall And remove these lines just ahead the jump to UPDATE .
Otherwise , a program will multiply only once
.data
s: .word 3
v: .word 14 3 12 #hard coding vector coefficients
t: .word 2 #value to be multiplied by
.globl main
.text
main:
la $s0,t #loading t into $s0
lw $s1,0($s0) # $s1=2
ori $s2,$zero,0 # $s2=0
la $s3,v # loading v into $s3
li $s7,0
la $s0,s # loading s into $s0
lw $s4,0($s0) # $s4 = 3
j f
f:
#if <cond>
bge $s2,$s4,DONE
#<for body>
lw $s5, ($s3) # $s5= 4
mulu $s5,$s5,$s1
addu $s7,$s7,$s5 # result stored into $s7
j UPDATE
UPDATE:
addiu $s2,$s2,1 #i=i+1
addiu $s3,$s3,4 #moving address 4 bytes since int
j f
DONE:
li $v0,10
syscall