# memread.s program for MIPS


.data
inp:        .word   1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16
msg:        .asciiz "Reading array\n"
newline:    .asciiz "\n"

.globl main # declare the global symbols of this program
                # SPIM requires a "main" symbol, (think of symbol
                #  as another name for label), which declares
                #  where our program starts

.text
                # .text starts the text segment of the program,
                # where the assembly program code is placed.


readarr:    # method to process an array

loop:
    beqz    $a2,    end     # go to end if all array elements processed
    lw  $a0,    0($a1)      # load array element into reg $a0
    li  $v0,    1
    syscall             # print element

    la  $a0,    newline
    li  $v0,    4
    syscall

    addi    $a2,    $a2,    -1  # decrement counter for elements left to be processed
    addi    $a1,    $a1,    4   # increment address for next element
    j   loop            # end of iteration
end:
    jr  $ra         # return

main:                   # This is the entry point of our program

    la  $a0,    msg     # make $a0 point to where the message is
    li  $v0,    4       # $v0 <- 4
    syscall             # Call the OS to print the message

    la  $a1,    inp     # array to be processed
    li  $a2,    16      # size of array to be processed

    jal readarr

    # This is the standard way to end a program
    li  $v0,    10
    syscall             # end the program