Confessions of a Code Addict

Confessions of a Code Addict

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Computer Architecture

x86 Assembly Exercise #1: Toy kill Program (Solution)
A step-by-step walkthrough of the toy kill program using raw Linux syscalls.
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Abhinav Upadhyay
8:42
Understanding Registers and Data Movement in x86-64 Assembly
A hands-on guide to general-purpose registers and data movement in x86-64
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Abhinav Upadhyay
Making System Calls in x86-64 Assembly
Watch now | Privilege levels, syscall conventions, and how assembly code talks to the Linux kernel
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Abhinav Upadhyay
31:44
One Law to Rule Them All: The Iron Law of Software Performance
A systems-level reasoning model for understanding why optimizations succeed or fail.
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Abhinav Upadhyay
Debugging X86-64 Assembly with GDB
Watch now (20 mins) | Learn how to inspect registers, step through instructions, and investigate crashes using GDB.
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Abhinav Upadhyay
19:40
Building (and Breaking) Your First X86 Assembly Program
We build a minimal X86 assembly program, run it… and hit a crash. But that crash is exactly what makes this program worth writing.
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Abhinav Upadhyay
3
The System-Level Foundation of Assembly
Tracing how the CPU, OS, and ELF format shape the structure of your assembly code
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Abhinav Upadhyay
Binary Arithmetic and Bitwise Operations for Systems Programming
Understand how computers represent numbers and perform operations at the bit level before diving into assembly
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Abhinav Upadhyay
Understanding Computer Organization from First Principles
A ground-up model of how computers execute code, starting from logic gates and ending at the instruction cycle.
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Abhinav Upadhyay
Hardware-Aware Coding: CPU Architecture Concepts Every Developer Should Know
Write faster code by understanding how it flows through your CPU
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Abhinav Upadhyay
Context Switching and Performance: What Every Developer Should Know
Understand how context switching affects CPU registers, caches, TLB, and pipeline performance, and learn strategies to mitigate performance penalties
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Abhinav Upadhyay
2
Two Threads, One Core: How Simultaneous Multithreading Works Under the Hood
Ever wondered how your CPU handles two tasks at once? Discover the magic of Simultaneous Multithreading and see what’s really going on inside.
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Abhinav Upadhyay
3
© 2025 Abhinav Upadhyay
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