Assembly Code Snippet
Last updated
Last updated
I had a wonderful experience exploring GitBook. If you're interested in delving into this repository like reading a book, you can access it through the following link: Assembly Code Snippet.
Creating Linux Executables from NASM Source Code
(NASM), a versatile assembler and disassembler, is a vital tool for Intel x86 architecture programming. It's widely adopted for crafting programs in 16-bit, 32-bit (IA-32), and 64-bit (x86-64) formats. This guide focuses on creating Linux executables from NASM source code. The process involves translating low-level mnemonics into machine language, understandable by processors.
Open your preferred text editor (e.g., Sublime, Atom, KWrite, XEmacs).
Compose your NASM source code.
Save the file with the .asm
extension.
Ensure NASM is installed on your machine.
If on Debian or Ubuntu, install with:
For other Linux distros, use your package manager (e.g., Urpmi, Yum, Emerge) or get NASM from the official site.
Assemble your source file using:
This creates file.o
(object file) in the current directory.
With the file.o
object file, two cases exist:
Case 1: Program begins with _start
procedure (no main function):
Case 2: Program begins with main
procedure:
(Note: Repository optimized for Case 1)
The executable is now created and resides in the current directory.
To run the program named "test," use:
This guide outlines the steps to create Linux executables from NASM source code. NASM, serving as an assembler and disassembler for Intel x86 architecture, facilitates the translation of mnemonics into machine language.
Source File Creation:
Open your preferred text editor.
Write your NASM source code.
Save the file with a .asm
extension.
Assemble Source File:
Ensure NASM is installed. For Debian/Ubuntu, use sudo apt-get install nasm
.
Install NASM using your distro's package manager or from the official site.
Assemble the source file with nasm -f elf file.asm
.
Create Executable:
For programs starting with _start
, create an executable with ld file.o -o file
.
For programs starting with main
, use gcc file.o -o file
.
Execute Program:
Run the executable with ./file
.
This process simplifies the creation of Linux executables from NASM source code, providing you with functional programs for your Intel x86 architecture projects.