BMP Image rotation in x86 assembly and C

Table of Contents

• About
• Getting Started
• Usage

About

Project for ARKO (Computer Architecture) course at Warsaw University of Technology. Project is implemented in x86 Assembly 64-bit version and in C language. Its purpose is to simply rotate BMP image by 90 degrees clockwise.

Getting Started on Linux

These instructions will get you a copy of the project up and running on your local machine with Linux OS for testing purposes.

Prerequisites

• Linux
• NASM
• GCC

Installing

• Install NASM

sudo apt-get install -y nasm

• Install gcc

sudo apt-get install gcc

• Clone repo

git clone https://github.com/bartooo/x86-bmp-image-rotation.git

Usage

• Open rotation64.c file
• In main() function:
  • Set name of BMP file you want to rotate (line 207)

  pInfo = readBMP("<name-of-file>.bmp");	//  Set name of source file

  • Set name of BMP file where rotated file will be saved

  saveBMP(pInfo, "<name-of-file>.bmp", memoryOut);	// Set name of destination file

• Save rotation64.c file
• Go to directory of project
• Compile code

sudo make all

• If compilation were successful you should see

nasm -o copyLines64.o -f elf64 copyLines64.asm
gcc -c -g -O0 rotation64.c
gcc -o rotation64 rotation64.o copyLines64.o

• Then run

./rotation64

• File should be rotated