Segmentation Fault with GCC and Gcov on Instrumented C++ Program

I’m to instrument GCC and Gcov to collect execution sequence information. While my approach works well for **c** programs on `x86` and `x86_64`, I’m encountering a segmentation fault when attempting […]

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.

How can I optimize matrix multiplication performance and reduce L3 cache misses in my C++ library?

I started a C++ library for efficient matrix operations, with a primary focus on matrix multiplication. The target application is scientific computing, of course performance is critical. I implemented a […]

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. […]

Modifying FreeRTOS Interrupt Priorities After Scheduler Initialization

Hey everyone @Middleware & OS , I’m neck-deep in an RTOS project using FreeRTOS. I need to read and potentially modify interrupt priorities after the FreeRTOS scheduler has been kicked […]