source: liacs/ca/opdr1/myprog-optimized.s@ 7

#/* Author    : Rick van der Zwet
# * S-number  : 0433373
# * Version   : $Id: myprog-optimized.s 237 2007-09-19 13:19:08Z rick $
# * Copyright : FreeBSD Licence 
# */
# space declaration to be used for the printf statement
 .data
        .align 4
space:  .asciiz  "  "
        .align 4
# array A reservation 80/4 means a 20 in size
A:      .space  80
        .align i
# array B, same size as array A
B:      .space  80
        .align 4
# declaration of integer C
C:      .word C
        .align 4
# declaration of integer i
i:      .word i
        .text
        .align  4
        .ent    main
main:
# init of C
        li      $4,0x0000002a           # 42
        sw      $4,C


#Define B[1] - B[19]
la $2,B
li $3,0x00000001 # 1
sw $3,4($2)
li $3,0x00000002
sw $3,8($2)
li $3,0x00000003
sw $3,12($2)
li $3,0x00000004
sw $3,16($2)
li $3,0x00000005
sw $3,20($2)
li $3,0x00000006
sw $3,24($2)
li $3,0x00000007
sw $3,28($2)
li $3,0x00000008
sw $3,32($2)
li $3,0x00000009
sw $3,36($2)
li $3,0x0000000a #10
sw $3,40($2)
li $3,0x0000000b
sw $3,44($2)
li $3,0x0000000c
sw $3,48($2)
li $3,0x0000000d
sw $3,52($2)
li $3,0x0000000e
sw $3,56($2)
li $3,0x0000000f
sw $3,60($2)
li $3,0x00000010
sw $3,64($2)
li $3,0x00000011
sw $3,68($2)
li $3,0x00000012
sw $3,72($2)
li $3,0x00000013
sw $3,76($2)

#Special hack for A[1], cause B[0] is not defined
lw $3,0($2)
addu $3,$3,$4
la $2,A
sw $3,4($2)

#Define A[2] - A[19]
li $3,0x0000002b # 42 + 1 = 43
sw $3,8($2)
li $3,0x0000002c # 44
sw $3,12($2)
li $3,0x0000002d # 45
sw $3,16($2)
li $3,0x0000002e # 46
sw $3,20($2)
li $3,0x0000002f # 47
sw $3,24($2)
li $3,0x00000030 # 48
sw $3,28($2)
li $3,0x00000031 # 49
sw $3,32($2)
li $3,0x00000032 # 50
sw $3,36($2)
li $3,0x00000033 # 51
sw $3,40($2)
li $3,0x00000034 # 52
sw $3,44($2)
li $3,0x00000035 # 53
sw $3,48($2)
li $3,0x00000036 # 54
sw $3,52($2)
li $3,0x00000037 # 55
sw $3,56($2)
li $3,0x00000038 # 56
sw $3,60($2)
li $3,0x00000039 # 57
sw $3,64($2)
li $3,0x0000003a # 58
sw $3,68($2)
li $3,0x0000003b # 59
sw $3,72($2)
li $3,0x0000003c # 60
sw $3,76($2)

# set the end registers to the end values
#(last value of i, last loop compare)
li $2,0x00000014 # 20
sw $2, i
# (last loop compare)
li $3,0x00000000 # 0

# Required output "60 19 20"
# the print statements
        li      $v0,1
        la      $3,A
        lw      $a0,76($3)
        syscall         #print A[19]    

        li $v0, 4        # system call code for print_str
        la $a0, space    # address of string to print
        syscall          # print the string "  "

        li $v0, 1
        la      $3,B
        lw      $a0,76($3)
        syscall         #print B[19]

        li $v0, 4        # 
        la $a0, space    # 
        syscall          # print the string "  "

        li      $v0,1
        la      $3,i
        lw      $a0,0($3)
        syscall         #print i
$L1:
        .end    main