Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

**Need help with disassembling binary executable files and *.o files to C code (in C (not C++) language)** ---------------------------------------------------------------------------- Basically, I need to write C

**Need help with disassembling binary executable files and *.o files to C code (in C (not C++) language)**

----------------------------------------------------------------------------

Basically, I need to write C code with given executable file and o files.

-----------------------------------------------------------------------------

## Problem 1

You are given two object files `given/problem1.o` and `given/foo_given.o` as well as an executable binary

file called `given/problem1_given`. The first one

contains the `main` function, the second contains a function called `foo` and the third

one is the program build from the two object files. Your task is to write C code for

the function `foo` in `foo_given.o`. Your code may not end up being identical to

the one in the given file, but it should be equivalent (i.e., given the same

inputs, it should produce the same output).

The `main()` function executes a few tests of the function `foo` in `foo_given.o`. These are not exhaustive tests and passing them does not

guarantee correctness, but it should be a pretty good indicator that your code is on the right track

(unless, of course, you will try to circumvent the process and design your `foo` function so that it ONLY works

with the tests present in `main`).

__Your own function should be implemented in the file `foo.c`.__ In order to build the object file, run :

```

make foo.o

```

In order to build and run your code:

```

make problem1

make run_problem1

```

The output from the program will give you an idea if your function `foo` performs

the task equivalent to the given version.

__Deliverables:__

Implementation of the function `foo` in file `foo.c`.

------------------------------------------------------------------------------------------------------

## Problem 2

You are given two object files `given/problem2.o` and `given/bar_given.o` as well as an executable binary

file called `given/problem2_given`. The first one

contains the `main` function, the second contains a function called `bar` and the third

one is the program build from the two object files. Your task is to write C code for

the function `bar` in `bar_given.o`. Your code may not end up being identical to

the one in the given file, but it should be equivalent (i.e., given the same

inputs, it should produce the same output).

The `main()` function executes a few tests of the function `bar` in `bar_given.o`. These are not exhaustive tests and passing them does not

guarantee correctness, but it should be a pretty good indicator that your code is on the right track

(unless, of course, you will try to circumvent the process and design your `bar` function so that it ONLY works

with the tests present in `main`).

__Your own function should be implemented in the file `bar.c`.__ In order to build the object file, run :

```

make bar.o

```

In order to build and run your code:

```

make problem2

make run_problem2

```

The output from the program will give you an idea if your function `bar` performs

the task equivalent to the given version.

__Deliverables:__

Implementation of the function `bar` in file `bar.c`.

--------------------------------------------------------------------------------------------

(Because I cannot upload files(such as o files and binary files) other than image files, I attached files as google drive link. If there is another way to upload files or link does not work, let me know please.)

https://drive.google.com/file/d/1uLsU7-mG4WUHkXm02gr1b_iVCsQRUDkO/view

I attached questions in the google drive link via problem.txt file

Thank you.

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Financial management theory and practice

Authors: Eugene F. Brigham and Michael C. Ehrhardt

12th Edition

978-0030243998, 30243998, 324422695, 978-0324422696

Students also viewed these Programming questions

Question

4 What is meant by two-way asymmetrical communications?

Answered: 1 week ago