.text
.globl check_remaining_columns
check_remaining_columns:
                ## $a0 = matrix
                ## $a1 = list
                ## $a2 = bitmask

    sub $sp, $sp, 28    ## getting memory space
    sw $ra, 0($sp)      ## storing ra into stack frame
    sw $s0, 4($sp)      ## getting space for s0
    sw $s1, 8($sp)      ## getting space for s1
    sw $s2, 12($sp)     ## getting space for s2
    sw $s3, 16($sp)     ## getting space for s3
    sw $s4, 20($sp)     ## getting space for s4
    sw $s5, 24($sp)     ## getting space for s5

    move $s0, $a0       ## s0 = matrix
    move $s1, $a1       ## s1 = list
    move $s5, $a2       ## s5 = bitmask

    li $s2, 0       ## s2 = i = 0
    lw $s3, 0($s1)      ## $s3 = list->size
    li $s4, 1       ## 1L: which means that it is a long that can be treated as an int.

for:    bge $s2, $s3, end1  ## branch if i >= list->size
    sllv $t1, $s4, $s2  ## 1L << i
    and $t2, $t1, $s5   ## (1L << i) & bitmask. This is 1 or 0.
    li $t3, 0       ## t3 = 0 to compare in if-statement
    beq $t3, $t2, next  ## if (1L << i) & bitmask == 0 then continue to next iteration.
    add $s2, $s2, 1
    j for

next:   move $a0,$s0        ## a0 = s0 = matrix
    move $a1,$s1        ## a1 = s1 = list
    move $a2,$s2        ## a2 = s2 = i = row
    jal any_matrix_column_matches_list_row  ## $v0 = 1 or 0
    ##move $s7, $v0
    li $t0, 0       ## $t0 = 0 to compare in if-loop
    beq $t0, $v0, end2  ## if ($v0 = 0) then branch to end2
    li $v0, 0       ## return 0
    j stack         ## jump to stack to put memory back
    jr $ra          ## return address
    add $s2, $s2, 1     ## ++i
    j for           ## jumps to for loop



end1:   li $v0, 1       ## return 1
    j stack         ## jump to stack to put memory back
    jr $ra          ## return address

end2:   add $s2, $s2, 1     ## ++i
    j for           ## jumps to for loop

stack:  lw $ra, 0($sp)      ## ra into stack frame
    lw $s0, 4($sp)      ## space for s0
    lw $s1, 8($sp)      ## space for s1
    lw $s2, 12($sp)     ## space for s2
    lw $s3, 16($sp)     ## space for s3
    lw $s4, 20($sp)     ## space for s4
    lw $s5, 24($sp)
    add $sp, $sp, 28    ## putting space back into stack frame
    jr $ra          ## return address