Assign 2 - Exercise 2.13 ASM

Link to source file
https://docs.google.com/file/d/0B3pg-UsmVkpFT2RGcUFVUkVYRVE/edit?usp=sharing


.data

space:    .asciiz "\n"            # Print New Line

.text
__start:
#2.13.1
#a
    li $t0, 0xAAAAAAAA
    li $t1, 0x12345678
    sll $t2, $t0, 30
    sll $t2, $t2, 14
    or $t2, $t2, $t1
    move $a0, $t2
    jal printint
#b  
    li $t0, 0xF00DD00D
    li $t1, 0x11111111
    sll $t2, $t0, 30
    sll $t2, $t2, 14
    or $t2, $t2, $t1
    move $a0, $t2
    jal printint
#output
#305419896
#286331153

#2.13.2
#a
    li $t0, 0xAAAAAAAA
    li $t1, 0x12345678
    sll $t2, $t0, 4
    andi $t2, $t2, -1
    move $a0, $t2
    jal printint
#b  
    li $t0, 0xF00DD00D
    li $t1, 0x11111111
    sll $t2, $t0, 4
    andi $t2, $t2, -1
    move $a0, $t2
    jal printint
#output
#-1431655776
#14483664  

#2.13.3
    #a
    li $t0, 0xAAAAAAAA
    li $t1, 0x12345678
    srl $t2, $t0, 3        #shift right t0 by 3 store in t2
    andi $t2, $t2, 0xFFEF    #t2 += 0xFFEF
    move $a0, $t2
    jal printint
#b  
    li $t0, 0xF00DD00D
    li $t1, 0x11111111
    srl $t2, $t0, 3        #shift right t0 by 3 store in t2
    andi $t2, $t2, 0xFFEF    #t2 += 0xFFEF
    move $a0, $t2
    jal printint
#output
#21829
#47617

#2.13.4
li $t0, 0x0000A5A5
li $t1, 0x00005A5A
sll  $t2, $t0, 1        #t2 = t0*2
andi $t2, $t2, -1    #t2 = t2 & -1
move $a0, $t2
jal printint

andi $t2, $t1, 0x00F0    #t2 = t1 & 0x00F0
srl  $t2, $t2, 2        #t2 = t2 >> 2 # t2/4
move $a0, $t2
jal printint

#output
#84810
#20

#2.13.5
xor $t2, $t2, $t2 #clear register

li $t0, 0xA5A50000
li $t1, 0xA5A50000
sll  $t2, $t0, 1        #t2 = t0*2
andi $t2, $t2,-1    #t2 = t2 & -1
move $a0, $t2
jal printint

andi $t2, $t1, 0x00F0    #t2 = t1 & 0x00F0
srl  $t2, $t2, 2        #t2 = t2 >> 2 # t2/4
move $a0, $t2
jal printint
#output
#1263140864
#0

#2.13.6
xor $t2, $t2, $t2 #clear register

li $t0, 0xA5A5FFFF
li $t1, 0xA5A5FFFF
sll  $t2, $t0, 1        #t2 = t0*2
andi $t2, $t2,-1    #t2 = t2 & -1
move $a0, $t2
jal printint

andi $t2, $t1, 0x00F0    #t2 = t1 & 0x00F0
srl  $t2, $t2, 2        #t2 = t2 >> 2 # t2/4
move $a0, $t2
jal printint

#output
#1263271934
#60

    j done
       
printint:  
    addi $v0, $zero, 1        # load appropriate system call code into register $v0;
                    # code for printing integer is 1
    syscall                # call operating system to perform operation

    addi $v0, $zero, 4          # load appropriate system call code into register $v0;
                    # code for printing string is 4
    la $a0, space               # load address of the string
    syscall

    jr $ra

done: