Question

Translate following pseudo-code to MIPS assembly language

cout << “\n Please input a number for $s0”;

cin >> $s0;

cout << “\n Please input a number for $s1”;

cin >> $s1;

cout << “\n Please input a number for $s2”;

cin >> $s2;

$t0 = $s0 / 8 - 2 * $s1 + $s2;

cout << “\n the Value of the expression “$s0 / 8 - 2 * $s1 + $s2” is ”;

cout >> $t0;

return;

Answer 1

C++ Program of Given Pseudo Code ::---

#include <iostream>  

using namespace std;  

int main( ) {  

  int $s0,$s1,$s2,$t0;  

   cout << "\nPlease input a number for $s0";  

   cin >> $s0;  

   cout << "\nPlease input a number for $s1";  

   cin >> $s1;  

   cout << "\nPlease input a number for $s2";  

   cin >> $s2;  

   $t0 = $s0 / 8 - 2 * $s1 + $s2;

   cout << "\nthe value of the expression is <<";  

   cout << $t0;

   return 0;

}

MIPS ASSEMBLY CODE OF GIVEN C++ CODE ::---

.LC0:

        .ascii  "\012Please input a number for $s0\000"

.LC1:

        .ascii  "\012Please input a number for $s1\000"

.LC2:

        .ascii  "\012Please input a number for $s2\000"

.LC3:

        .ascii  "\012the value of the expression is <<\000"

main:

        daddiu  $sp,$sp,-48

        sd      $31,40($sp)

        sd      $fp,32($sp)

        sd      $28,24($sp)

        move    $fp,$sp

        lui     $28,%hi(%neg(%gp_rel(main)))

        daddu   $28,$28,$25

        daddiu  $28,$28,%lo(%neg(%gp_rel(main)))

        ld      $2,%got_page(.LC0)($28)

        daddiu  $5,$2,%got_ofst(.LC0)

        ld      $4,%got_disp(_ZSt4cout)($28)

        ld      $2,%call16(_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc)($28)

        move    $25,$2

        nop

        daddiu  $2,$fp,4

        move    $5,$2

        ld      $4,%got_disp(_ZSt3cin)($28)

        ld      $2,%call16(_ZNSirsERi)($28)

        move    $25,$2

        nop

        ld      $2,%got_page(.LC1)($28)

        daddiu  $5,$2,%got_ofst(.LC1)

        ld      $4,%got_disp(_ZSt4cout)($28)

        ld      $2,%call16(_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc)($28)

        move    $25,$2

        nop

        daddiu  $2,$fp,8

        move    $5,$2

        ld      $4,%got_disp(_ZSt3cin)($28)

        ld      $2,%call16(_ZNSirsERi)($28)

        move    $25,$2

        nop

        ld      $2,%got_page(.LC2)($28)

        daddiu  $5,$2,%got_ofst(.LC2)

        ld      $4,%got_disp(_ZSt4cout)($28)

        ld      $2,%call16(_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc)($28)

        move    $25,$2

        nop

        daddiu  $2,$fp,12

        move    $5,$2

        ld      $4,%got_disp(_ZSt3cin)($28)

        ld      $2,%call16(_ZNSirsERi)($28)

        move    $25,$2

        nop

        lw      $2,4($fp)

        bgez    $2,.L2

        nop

        addiu   $2,$2,7

.L2:

        sra     $2,$2,3

        move    $3,$2

        lw      $2,8($fp)

        sll     $2,$2,1

        subu    $2,$3,$2

        move    $3,$2

        lw      $2,12($fp)

        addu    $2,$3,$2

        sw      $2,0($fp)

        ld      $2,%got_page(.LC3)($28)

        daddiu  $5,$2,%got_ofst(.LC3)

        ld      $4,%got_disp(_ZSt4cout)($28)

        ld      $2,%call16(_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc)($28)

        move    $25,$2

        nop

        lw      $2,0($fp)

        move    $5,$2

        ld      $4,%got_disp(_ZSt4cout)($28)

        ld      $2,%call16(_ZNSolsEi)($28)

        move    $25,$2

        nop

        move    $2,$0

        move    $sp,$fp

        ld      $31,40($sp)

        ld      $fp,32($sp)

        ld      $28,24($sp)

        daddiu  $sp,$sp,48

        j       $31

        nop

__static_initialization_and_destruction_0(int, int):

        daddiu  $sp,$sp,-48

        sd      $31,40($sp)

        sd      $fp,32($sp)

        sd      $28,24($sp)

        move    $fp,$sp

        lui     $28,%hi(%neg(%gp_rel(__static_initialization_and_destruction_0(int, int))))

        daddu   $28,$28,$25

        daddiu  $28,$28,%lo(%neg(%gp_rel(__static_initialization_and_destruction_0(int, int))))

        move    $3,$4

        move    $2,$5

        sll     $3,$3,0

        sw      $3,0($fp)

        sll     $2,$2,0

        sw      $2,4($fp)

        lw      $3,0($fp)

        li      $2,1                        # 0x1

        bne     $3,$2,.L6

        nop

        lw      $3,4($fp)

        li      $2,65535                    # 0xffff

        bne     $3,$2,.L6

        nop

        ld      $2,%got_page(_ZStL8__ioinit)($28)

        daddiu  $4,$2,%got_ofst(_ZStL8__ioinit)

        ld      $2,%call16(_ZNSt8ios_base4InitC1Ev)($28)

        move    $25,$2

        nop

        ld      $6,%got_disp(__dso_handle)($28)

        ld      $2,%got_page(_ZStL8__ioinit)($28)

        daddiu  $5,$2,%got_ofst(_ZStL8__ioinit)

        ld      $4,%got_disp(_ZNSt8ios_base4InitD1Ev)($28)

        ld      $2,%call16(__cxa_atexit)($28)

        move    $25,$2

        nop

.L6:

        nop

        move    $sp,$fp

        ld      $31,40($sp)

        ld      $fp,32($sp)

        ld      $28,24($sp)

        daddiu  $sp,$sp,48

        j       $31

        nop

_GLOBAL__sub_I_main:

        daddiu  $sp,$sp,-32

        sd      $31,24($sp)

        sd      $fp,16($sp)

        sd      $28,8($sp)

        move    $fp,$sp

        lui     $28,%hi(%neg(%gp_rel(_GLOBAL__sub_I_main)))

        daddu   $28,$28,$25

        daddiu  $28,$28,%lo(%neg(%gp_rel(_GLOBAL__sub_I_main)))

        li      $5,65535                    # 0xffff

        li      $4,1                        # 0x1

        ld      $2,%got_page(__static_initialization_and_destruction_0(int, int))($28)

        daddiu  $2,$2,%got_ofst(__static_initialization_and_destruction_0(int, int))

        move    $25,$2

        nop

        move    $sp,$fp

        ld      $31,24($sp)

        ld      $fp,16($sp)

        ld      $28,8($sp)

        daddiu  $sp,$sp,32

        j       $31

        nop

Thankyou :)