NASM

Comprehensive study of nasm covering fundamental concepts and advanced applications.

Introduction to NASM and Assembly LanguageNASM Syntax and StructureRegisters and Memory in x86
Procedures and Modular ProgrammingSystem Calls and Interfacing with Operating SystemsAdvanced Control Flow: Loops, Jumps, and Logic
Building a Simple CalculatorInterfacing NASM with C ProgramsDebugging and Optimizing NASM Code
Breaking Down Complex ProblemsMemorizing Common Instructions and Patterns
Introduction to NASM...NASM Syntax and Stru...Registers and Memory...Procedures and Modul...System Calls and Int...Advanced Control Flo...Building a Simple Ca...Interfacing NASM wit...Debugging and Optimi...Breaking Down Comple...Memorizing Common In...
Advanced Topics

Advanced Control Flow: Loops, Jumps, and Logic

Controlling the Path of Your Program

In NASM, you can create complex behaviors using jumps, loops, and conditional logic.

Types of Jumps

  • Unconditional Jumps: jmp label — jumps no matter what
  • Conditional Jumps: je, jne, jg, jl, etc. — jump only if a condition is true

Creating Loops

Combine labels and jumps to repeat actions:

mov ecx, 10
my_loop:
    ; do something
    loop my_loop

Making Decisions

Use instructions like cmp (compare) and test to set flags, then jump based on the result.

Why Control Flow Matters

  • Makes your code dynamic and powerful
  • Lets you solve real-world problems like searching or sorting

Mastering control flow means your NASM programs can do almost anything!

Examples

  • Building a countdown timer using a loop.

  • Writing code that only runs if a value equals 5.

In a Nutshell

Advanced control flow in NASM uses jumps and loops for dynamic programs.

Next
Building a Simple Calculator