Question

I am just starting to lean MIPS assembly, and I am trying to write a simple while loop. It will be equivilent to the C code:

int A[5];

for(i=0;i<5;i++) A[i]=i;

So I know I can use beq to make a while loop, but I don’t know how to increment the memory address each time to go to the next register. I think maybe the slt operand may be useful, but I don’t know.

Answer 1

assuming $3 points to A[]

lis $4 .word 4 lis $5 .word 1 add $7, $4, $5 ;$7 = 5 add $6, $0, $0 ;$6 = 0  loop: sw $6, 0($3) add $3, $4, $3 ;point to next 'int' add $6, $5, $6 ;add 1 to our counter bne $7, $6, loop ;we will stop at 5