NASM
Comprehensive study of nasm covering fundamental concepts and advanced applications.
Advanced Topics
Procedures and Modular Programming
Breaking Down Programs with Procedures
Procedures (or functions) let you organize your code into reusable chunks. In NASM, you can define procedures, pass parameters (often via registers or the stack), and return results.
How to Define a Procedure
A procedure has a label, code, and a ret
instruction to return:
my_proc:
; do something cool
ret
Calling Procedures
Use call
to jump to your procedure and ret
to come back. Parameters are usually passed in registers or pushed onto the stack.
Why Modular Programming Matters
- Readability: Easier to understand and debug
- Reusability: Write once, use many times
- Teamwork: Work on different parts at the same time
Modular design is a pro skill that makes even the biggest NASM programs manageable!
Examples
Making a procedure that adds two numbers.
Dividing a big program into smaller, clear functions.
In a Nutshell
Procedures let you write modular, reusable NASM code.