Confessions of a Code Addict

Confessions of a Code Addict

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July 2025

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
A Programmer’s Guide to x86-64 Assembly (Series Overview)
Welcome to my ongoing series on x86-64 assembly programming, designed for programmers who want to peel back the abstraction and understand how code…
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Abhinav Upadhyay
2

June 2025

Why This Python Performance Trick Doesn’t Matter Anymore
A deep dive into Python’s name resolution, bytecode, and how CPython 3.11 quietly made a popular optimization irrelevant.
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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

May 2025

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

April 2025

© 2025 Abhinav Upadhyay
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