Question

PLease give me this question Answer.

1. Write working assembly code that successfully executes the following stack reverse Polish (postfix) based code.
   1. Your code must include the use of sub-routines Push, Pop, Subtract, Add

Push A

Push B

Push C

Add

Push D

Push F

Subtract

Subtract

Push E

Add

Add

Pop X

A, 3

B, 5

C, 7

D, 2

E, 4

F, 1

2. What is the final value for X?

Answer 1

section .text

                global _start

_start:

                mov eax,’3’;

                mov ebx,’5’;

                mov ecx,’7’;

push eax;

push ebx;

                add ecx, [esp] ;

                push ecx;

                mov eax, ’2’;

                mov ebx,’1’;

                sub eax,ebx;

                pop ebx;

                sub eax,ebx;

                mov ebx,’4’;

                add eax, ebx;

                pop ebx;

                add eax, ebx;

                move X, eax;

the final value of X is 18