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 […]

How to Disassemble and Filter Out Static Jumps in Program Output with Bash

My program outputs encoded instructions, and each line represents an independent set of instructions, like this: 0x81FB4300000090 0x69FC4300000090 0x81FC4300000090 0x69FD4300000090 0x81FD4300000090 0x69FE4300000090 0x81FE4300000090 0x69FF4300000090 0x81FF4300000090 0x00054400000090 0x01054400000090 0x02054400000090 0x03054400000090 0x08054400000090 […]

Impact of Using Extended Registers (r8, r9, etc.) on Code Size and Performance

I have a question about using the extended registers as in r8, r9, r10, …. , I want to use them frequently in my program, but I’ve noticed a problem […]

Optimizing memcpy Performance on Intel Core i7 10700K: SIMD and Compiler Flags

I am analyzing the performance of `memcpy` on an Intel Core i7 10700K CPU , using GCC 10.2 on Linux kernel 5.10. My assumption is that its speed should be […]

How can I slow down the browser to avoid network congestion with retransmissions?

Please guys my web server (using RTOS and HTTP 1.0) closes the connection after each request. The browser keeps sending requests for “.js” files with HTTP 1.1, leading to retransmissions. […]

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 […]

Optimizing a bubble sort implementation in C for an x86-64 architecture

Hello , I’m working on optimizing a bubble sort implementation in `C` for an `x86-64` architecture specifically targeting an Intel Core i7 processor using `GCC 11.2` . I noticed that […]