> ## Documentation Index
> Fetch the complete documentation index at: https://swe.aboneda.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Recursion

I prefered to start with recursion as it has many internal details and concepts to be studies

1. Low Level Foundations

* Number systems (binary, hex) وإزاي الميموري بتتعامل معاهم
* How CPU works basically - fetch, decode, execute cycle
* Registers - إيه هي وليه موجودة
* CPU Architecture (x86-64 specifically)

2. Memory

* Memory layout of a process (code, stack, heap, data segments)
* Pointers & memory addresses
* Static vs dynamic memory allocation
* Virtual memory & how OS maps it

3. Assembly Basics

* Basic x86-64 instructions (mov, push, pop, call, ret, jmp)
* What call and ret actually do to the instruction pointer
* The difference between a call and a jmp

4. Stack Mechanics

* What a stack data structure is
* Stack Pointer (RSP) and Base Pointer (RBP)
* Push/pop mechanics at the hardware level
* Stack growth direction (why it grows downward)

5. Functions Under the Hood

* Calling conventions (System V AMD64 ABI for Linux, or Windows x64 ABI)
* What a stack frame / activation record is
* How arguments get passed (registers vs stack)
* How return values work

5. OS Basics

* Process memory limits
* What a segfault actually is
* Stack size limits and how the OS enforces them