#
#  example of use of procedures in subs.s
#  
        .globl  main
        .text
main:
#
# opening linkage (save return address)
#
        addi    $sp,$sp,-4
        sw      $ra,0($sp)
#
# print some lines
#
        la      $a0, line
        jal     printline
        la      $a0, another
        jal     printline
#
# prompt for and then print some integers
#
# register use:
#   $s0 A
#   $s1 B
#
        la      $a0, promptA
        jal     getint
        add     $s0, $v0, $zero
#
        la      $a0, promptB
        jal     getint
        add     $s1, $v0, $zero
#
        la      $a0, printA
        add     $a1, $s0, $zero
        jal     printint
#
        la      $a0, printB
        add     $a1, $s1, $zero
        jal     printint
#
# closing linkage (get return address and restore stack pointer)
#
        lw      $ra,0($sp)
        addi    $sp,$sp,4
        jr      $ra
#
# end of program
#
        .end    main
#
# area for variables and constants
#
        .data
line:   .asciiz "hello world\n"
another:.asciiz "greetings earthling\n"
promptA:.asciiz "Enter an integer for A:\n"
promptB:.asciiz "Enter an integer for B:\n"
printA: .asciiz "Value of A:  "
printB: .asciiz "Value of B:  "