Question

Solve following tasks using MIPS
Task

Write a program that gets a number from user and displays “Even”, or “Odd. (If-else)

Write a program that input a number from user displays each digit separately. For example if input is 3986, output is  6, 8, 9 ,3. (Loop)

Write a program that converts a decimal number to binary. (Loop)

Hint for Task 1 and Task 3.

    Use, div $tdivident,$tdivider and mfhi $tdestination instructions.

For example,

Div $t1,$t2 will divide $t1 from $t2 and move the quotient to LOW register and remainder to HI        register

mfhi $t3 will move remainder from HIGH register to $t3.

Answer 1

Answer.)

Write a program that gets a number from user and displays “Even”, or “Odd. (If-else)

Solution:

.file   1 ""
        .section .mdebug.abi32
        .previous
        .nan    legacy
        .module fp=32
        .module nooddspreg
        .abicalls
        .rdata
        .align  2
$LC0:
        .ascii  "Enter a number?\000"
        .align  2
$LC1:
        .ascii  "%d\000"
        .align  2
$LC2:
        .ascii  "Even\000"
        .align  2
$LC3:
        .ascii  "Odd\000"
        .text
        .align  2
        .globl  main
        .set    nomips16
        .set    nomicromips
        .ent    main
        .type   main, @function
main:
        .frame  $fp,40,$31              # vars= 8, regs= 2/0, args= 16, gp= 8
        .mask   0xc0000000,-4
        .fmask  0x00000000,0
        .set    noreorder
        .cpload $25
        .set    nomacro
        addiu   $sp,$sp,-40
        sw      $31,36($sp)
        sw      $fp,32($sp)
        move    $fp,$sp
        .cprestore      16
        movz    $31,$31,$0
        lw      $2,%got($LC0)($28)
        nop
        addiu   $4,$2,%lo($LC0)
        lw      $2,%call16(printf)($28)
        nop
        move    $25,$2
        .reloc  1f,R_MIPS_JALR,printf
1:      jalr    $25
        nop

        lw      $28,16($fp)
        addiu   $2,$fp,24
        move    $5,$2
        lw      $2,%got($LC1)($28)
        nop
        addiu   $4,$2,%lo($LC1)
        lw      $2,%call16(__isoc99_scanf)($28)
        nop
        move    $25,$2
        .reloc  1f,R_MIPS_JALR,__isoc99_scanf
1:      jalr    $25
        nop

        lw      $28,16($fp)
        lw      $2,24($fp)
        nop
        andi    $2,$2,0x1
        bne     $2,$0,$L2
        nop

        lw      $2,%got($LC2)($28)
        nop
        addiu   $4,$2,%lo($LC2)
        lw      $2,%call16(printf)($28)
        nop
        move    $25,$2
        .reloc  1f,R_MIPS_JALR,printf
1:      jalr    $25
        nop

        lw      $28,16($fp)
        b       $L3
        nop

$L2:
        lw      $2,%got($LC3)($28)
        nop
        addiu   $4,$2,%lo($LC3)
        lw      $2,%call16(printf)($28)
        nop
        move    $25,$2
        .reloc  1f,R_MIPS_JALR,printf
1:      jalr    $25
        nop

        lw      $28,16($fp)
$L3:
        move    $2,$0
        move    $sp,$fp
        lw      $31,36($sp)
        lw      $fp,32($sp)
        addiu   $sp,$sp,40
        j       $31
        nop

        .set    macro
        .set    reorder
        .end    main
        .size   main, .-main
        .ident  "GCC: (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609"