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CONVERT THE FOLLOWING FUNCTION IN MARS SIMULATOR (MIPS) This FUNCTION should be Runnable on MARS (MIPS...

CONVERT THE FOLLOWING FUNCTION IN MARS SIMULATOR (MIPS)

This FUNCTION should be Runnable on MARS (MIPS Assembler and Runtime Simulator) IDE

C FUNCTION WHICH NEEDS TO BE CONVERTED (ONLY USE MARS)

void decrypt(int numberOfChar, int key, char * cipherText, char * plainText)

{

int j = 0;

int i =0;

int k = 0;

int reverseOrderedKey[4];

int n =4;

int c =0;

int d =0;

int orderedKey[4] = {0,0,0,0};  

while(key)

{

reverseOrderedKey[k] = key %10;

key /= 10;

k++;

}

for (c = n - 1, d = 0; c >= 0; c--, d++)

orderedKey[d] = reverseOrderedKey[c];

  

for ( j=0; j <= 4; j++)

{

for( i=0; i<numberOfChar; i++)

{{

plainText[i] = cipherText[i] - orderedKey[j];

}

j += 1;

if (j %4 == 0) j = 0;

  

}

  

if (i == strlen(cipherText)) break;

  

}

  

}

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Answer #1 
.file   1 ""
        .section .mdebug.abi32
        .previous
        .nan    legacy
        .module fp=32
        .module nooddspreg
        .abicalls
        .text
        .align  2
        .globl  decrypt
        .set    nomips16
        .set    nomicromips
        .ent    decrypt
        .type   decrypt, @function
decrypt:
        .frame  $sp,88,$31              # vars= 32, regs= 8/0, args= 16, gp= 8
        .mask   0x807f0000,-4
        .fmask  0x00000000,0
        .set    noreorder
        .cpload $25
        .set    nomacro
        addiu   $sp,$sp,-88
        .cprestore      16
        sw      $21,76($sp)
        sw      $20,72($sp)
        sw      $17,60($sp)
        movz    $31,$31,$0
        sw      $31,84($sp)
        sw      $22,80($sp)
        sw      $19,68($sp)
        sw      $18,64($sp)
        sw      $16,56($sp)
        move    $20,$4
        move    $21,$6
        beq     $5,$0,$L4
        move    $17,$7

        li      $2,10                   # 0xa
        bne     $2,$0,1f
        div     $0,$5,$2
        break   7
1:
        mfhi    $3
        mflo    $4
        beq     $4,$0,$L4
        sw      $3,40($sp)

        li      $3,100                  # 0x64
        bne     $2,$0,1f
        div     $0,$4,$2
        break   7
1:
        mfhi    $4
        nop
        nop
        bne     $3,$0,1f
        div     $0,$5,$3
        break   7
1:
        mflo    $3
        beq     $3,$0,$L4
        sw      $4,44($sp)

        li      $4,1000                 # 0x3e8
        bne     $2,$0,1f
        div     $0,$3,$2
        break   7
1:
        mfhi    $3
        nop
        nop
        bne     $4,$0,1f
        div     $0,$5,$4
        break   7
1:
        mflo    $5
        beq     $5,$0,$L4
        sw      $3,48($sp)

        bne     $2,$0,1f
        div     $0,$5,$2
        break   7
1:
        mfhi    $5
        sw      $5,52($sp)
$L4:
        lw      $2,52($sp)
        move    $16,$0
        sw      $2,24($sp)
        lw      $2,48($sp)
        addu    $19,$21,$20
        sw      $2,28($sp)
        lw      $2,44($sp)
        addiu   $18,$sp,24
        sw      $2,32($sp)
        lw      $2,40($sp)
        nop
        sw      $2,36($sp)
$L3:
        blez    $20,$L10
        move    $22,$0

        move    $2,$21
        move    $5,$17
$L7:
        sll     $4,$16,2
        addu    $4,$18,$4
        lbu     $3,0($2)
        lw      $4,0($4)
        addiu   $16,$16,1
        subu    $3,$3,$4
        andi    $4,$16,0x3
        bne     $4,$0,$L6
        sb      $3,0($5)

        move    $16,$0
$L6:
        addiu   $2,$2,1
        bne     $19,$2,$L7
        addiu   $5,$5,1

        move    $22,$20
$L10:
        lw      $25,%call16(strlen)($28)
        nop
        .reloc  1f,R_MIPS_JALR,strlen
1:      jalr    $25
        move    $4,$21

        lw      $28,16($sp)
        beq     $2,$22,$L1
        addiu   $16,$16,1

        slt     $2,$16,5
        bne     $2,$0,$L3
        nop

$L1:
        lw      $31,84($sp)
        lw      $22,80($sp)
        lw      $21,76($sp)
        lw      $20,72($sp)
        lw      $19,68($sp)
        lw      $18,64($sp)
        lw      $17,60($sp)
        lw      $16,56($sp)
        j       $31
        addiu   $sp,$sp,88

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