Question

Translate the following code into MIPS code.

Test (int i, int j)

                        {

                        int k;

                        k = Double(i+1) + Double (j-10)

                        return k;

                        }

Sub (int m)

                        {

                        int g;

                        g = m + m;

                        return g;

                        }

Assume the compiler associates the variable k to the register $s0. Assume the compiler associates the variable g to the register $t0.

Answer 1

MIPS Code:

.file   1 ""
        .section .mdebug.abi32
        .previous
        .nan    legacy
        .module fp=32
        .module nooddspreg
        .abicalls
        .text
        .align  2
        .globl  Test
        .set    nomips16
        .set    nomicromips
        .ent    Test
        .type   Test, @function
Test:
        .frame  $fp,24,$31              # vars= 8, regs= 1/0, args= 0, gp= 8
        .mask   0x40000000,-4
        .fmask  0x00000000,0
        .set    noreorder
        .set    nomacro
        addiu   $sp,$sp,-24
        sw      $fp,20($sp)
        move    $fp,$sp
        sw      $4,24($fp)
        sw      $5,28($fp)
        movz    $31,$31,$0
        lw      $2,24($fp)
        nop
        addiu   $2,$2,1
        mtc1    $2,$f0
        nop
        cvt.d.w $f2,$f0
        lw      $2,28($fp)
        nop
        addiu   $2,$2,-10
        mtc1    $2,$f0
        nop
        cvt.d.w $f0,$f0
        add.d   $f0,$f2,$f0
        .set    macro
        trunc.w.d $f0,$f0,$2
        .set    nomacro
        mfc1    $2,$f0
        nop
        sw      $2,8($fp)
        lw      $2,8($fp)
        move    $sp,$fp
        lw      $fp,20($sp)
        addiu   $sp,$sp,24
        j       $31
        nop

        .set    macro
        .set    reorder
        .end    Test
        .size   Test, .-Test
        .align  2
        .globl  Sub
        .set    nomips16
        .set    nomicromips
        .ent    Sub
        .type   Sub, @function
Sub:
        .frame  $fp,24,$31              # vars= 8, regs= 1/0, args= 0, gp= 8
        .mask   0x40000000,-4
        .fmask  0x00000000,0
        .set    noreorder
        .set    nomacro
        addiu   $sp,$sp,-24
        sw      $fp,20($sp)
        move    $fp,$sp
        sw      $4,24($fp)
        lw      $3,24($fp)
        movz    $31,$31,$0
        lw      $2,24($fp)
        nop
        addu    $2,$3,$2
        sw      $2,8($fp)
        lw      $2,8($fp)
        move    $sp,$fp
        lw      $fp,20($sp)
        addiu   $sp,$sp,24
        j       $31
        nop

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

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