Why is my assembler subroutine for Shellsort not sorting the array when integrated with a C program

In a group work where we are trying to integrate an assembler subroutine for sorting numbers `Shellsort` with a `C` program, the sorting algorithm has been tested as a standalone […]

How to optimize SIMD instructions for double precision floating point operations on Intel Core i7

I want to optimize a computationally intensive loop using SIMD instructions on an Intel Core i7 `12700K` processor and 32GB of DDR4 `3200` memory , to boost the performance for […]

Swap Odd and Even Bits

Write a C function to swap all odd and even bits in an unsigned integer. Bit positions 0, 2, 4, … are considered even bits, and positions 1, 3, 5, […]

Why did the value of the rbx register change unexpectedly in GDB?

I am debugging a program on an `x86-64` system `Ubuntu 22.04` `GDB v10.2` `GCC 11.2.0` using `GDB` and encountered an unexpected behavior. I was inspecting the value of the `rbx` […]

Why does my assembly network server application cause a segmentation fault?

I’m working on a network server application in assembly language so I can understand low level networking concepts. So I’ve implemented a socket server using assembly language system calls, but […]

Segmentation Fault in Assembly Program Using AT&T Syntax and GNU Assembler

I’ve written a test program using AT&T syntax for use with GNU assembler. The program is supposed to print the value `1` using printf.

Handling Multi-Digit Integer Input in Assembly on Ubuntu 22.04

This `fm_module.txt` file has a copy of my project source code that involves a simple user input and arithmetic operations on an Intel Core i7-12700K processor running Ubuntu 22.04. I’ve […]

Why is the XOR operation not toggling the player variable in my x86 assembly tic-tac-toe game?

I am working on a text based tic-tac-toe game for some users, using x86 assembly on an Intel Core i7 12700K systems running Ubuntu 22.04. I’m using NASM assembler and […]

How can I debug an “Illegal instruction” error in my x86-64 assembly ray tracer?

I’m working on a personal project , a simple ray tracer written in x86-64 assembly for educational purposes. It’s currently in the early stages, focusing on basic ray-sphere intersection calculations. […]