Printing Each node

The loop is a sentinel controlled loop. It keeps going until it hits the special value that signals the end. Here is the code with some new lines that print the data of each node:

main:
          la     $s0,elmnt01    # get a pointer to the first node
          
loop:     beqz   $s0,done       # while the pointer is not null
          lw     $a0,0($s0)     #   get the data of this node

                                #   do something with the node
          li     $v0,1          #   print it
          syscall               #
          la     $a0,sep        #   print separator
          li     $v0,4          #
          syscall               #
          
          lw     $s0,4($s0)     #   get the pointer to the next node
          b      loop
          
done:     . . . 

          .data   
elmnt01:  .word  1
          .word  elmnt02

elmnt02:  .word  2
          .word elmnt03 

elmnt03:  .word  3
          .word elmnt04 

elmnt04:  .word  5
          .word  elmnt05
          
elmnt05:  .word  7
          .word  0

sep:      .asciiz "  "

The code that traverses the list is in black; the code that processes the data at each node is in blue.