.text
        .globl print_hexbytes
print_hexbytes:
#
#  procedure to print bytes in hex
#
#  $a0 has address of first byte to print
#  $a1 has number of bytes to print
#
# YOUR CODE GOES HERE
        jr      $ra
# IF YOU NEED VARIABLES YOU CAN PUT THEM HERE
        .data
# uncomment if you think this will be useful, renaming if you like
#phb_hexdigits: .ascii "0123456789abcdef"
#
# YOU SHOULD NOT NEED TO CHANGE ANYTHING BELOW
#
#  test/demo of procedure to print bytes in hex
#
        .text
        .globl  main
main:
#
# opening linkage (save return address)
#
        addi    $sp, $sp, -4
        sw      $ra, 0($sp)
#
# prompt for and get user input (string), then echo
#
        la      $a0, prompt1
        li      $v0, 4              # print string
        syscall
        la      $a0, input_str
        la      $a1, 20
        li      $v0, 8              # read string
        syscall
        la      $a0, echo
        li      $v0, 4              # print string
        syscall
        la      $a0, input_str
        li      $v0, 4              # print string
        syscall
#
# print string using procedure
#
        la      $a0, header_result
        li      $v0, 4              # print string
        syscall
        la      $a0, input_str
        li      $a1, 20
        jal     print_hexbytes
        la      $a0, nl
        li      $v0, 4              # print string
        syscall
#
# prompt for and get user input (integer), then echo
#
        la      $a0, prompt2
        li      $v0, 4              # print string
        syscall
        li      $v0, 5              # read integer
        syscall
        addi    $s0, $v0, 0
        la      $a0, echo
        li      $v0, 4              # print string
        syscall
        addi    $a0, $s0, 0
        li      $v0, 1              # print integer
        syscall
        la      $a0, nl
        li      $v0, 4              # print string
        syscall
#
# print integer using procedure
#
        la      $a0, header_result
        li      $v0, 4              # print string
        syscall
        sw      $s0, input_int
        la      $a0, input_int
        li      $a1, 4
        jal     print_hexbytes
        la      $a0, nl
        li      $v0, 4              # print string
        syscall
#
# closing linkage (get return address and restore stack pointer)
#
        lw      $ra, 0($sp)
        addi    $sp, $sp, 4
        jr      $ra
        .end    main
#
# area for variables and constants
#
        .data
prompt1: .asciiz "Enter a line of text:\n"
prompt2: .asciiz "Enter an integer:\n"
echo: .asciiz "Input "
header_result: .asciiz "Result "
nl:     .asciiz "\n"

input_str:  .space  20
input_int:  .word   0