Developing a Multithreaded Kernel From Scratch!

Developing a Multithreaded Kernel From Scratch!, available at $84.99, has an average rating of 4.68, with 138 lectures, based on 1305 reviews, and has 13785 subscribers.

You will learn about How to create a kernel from scratch How to create a multi-tasking kernel How to handle malicious or problematic programs in your operating system. Terminating them if they misbehave. How memory works in computers The difference between kernel land, user land and the protection rings that make up modern computing Kernel design patterns used by the Linux kernel its self You will learn all about virtual memory and how to map virtual addresses to physical addresses You will learn how to make the kernel understand processes and tasks You will learn how to load ELF files You will learn how to debug disassembled machine code You will learn how to debug your kernel in an emulator with GDB. This course is ideal for individuals who are Beginner kernel developers who want to learn how to create kernels It is particularly useful for Beginner kernel developers who want to learn how to create kernels.

Enroll now: Developing a Multithreaded Kernel From Scratch!

Summary

Title: Developing a Multithreaded Kernel From Scratch!

Price: $84.99

Average Rating: 4.68

Number of Lectures: 138

Number of Published Lectures: 138

Number of Curriculum Items: 138

Number of Published Curriculum Objects: 138

Original Price: £49.99

Quality Status: approved

Status: Live

What You Will Learn

How to create a kernel from scratch
How to create a multi-tasking kernel
How to handle malicious or problematic programs in your operating system. Terminating them if they misbehave.
How memory works in computers
The difference between kernel land, user land and the protection rings that make up modern computing
Kernel design patterns used by the Linux kernel its self
You will learn all about virtual memory and how to map virtual addresses to physical addresses
You will learn how to make the kernel understand processes and tasks
You will learn how to load ELF files
You will learn how to debug disassembled machine code
You will learn how to debug your kernel in an emulator with GDB.

Who Should Attend

Beginner kernel developers who want to learn how to create kernels

Target Audiences

Beginner kernel developers who want to learn how to create kernels

This course is designed to teach you how to create your very own multitasking operating system and kernel from scratch. It is assumed you have no experience in programming kernels and you are taught from the ground up.

Real Mode Development

Real mode is a legacy mode in all Intel processors that causes the processor to start in a legacy state, it performs like the old 8086 Intel processors did back in the way.

In the “Real Mode Development” section of the course we start by learning about the boot process and how memory works, we then move on to creating our very own boot loader that we test on our real machine! This boot loader will output a simple “Hello World!” message to the screen and we write this boot loader in purely assembly language.

In this section we also read a sector(512 bytes) from the hard disk and learn all about interrupts in real mode and how to create them.

This section gives you a nice taster into kernel development, without over whelming you with information. You are taught the basics and enough about the legacy processors to be able to move forward to more modern kernel development further into this course.

Protected Mode Development

In this section we create a 32 bit multi-tasking kernel that has the FAT16 filesystem. Our kernel will use Intel’s built in memory protection and security mechanisms that allow us to instruct the processor to protect our kernel and prevent user programs from damaging it.

This section is very in depth, you are taught all about paging and virtual memory. We take advantage of clever instructions in Intel processors to allow all processes to share the same memory addresses, this is known as memory virtualization. We map memory addresses to point to different physical memory addresses to create the illusion that every process that is running is loaded at the same address. This is a very common technique in kernel development and is also how swap files work (Those files that are used to compensate for when you run out of usable RAM).

We create our own virtual filesystem layer that uses a design that is similar to the Linux kernel. This clever abstraction that will be taught to you was inspired by the instructors knowledge of writing Linux kernel drivers in his past.

You are taught about the design of the FAT16 filesystem and how the FAT16 filesystem is broken down into clusters and that they can chain together. We then implement our very own FAT16 filesystem driver allowing files to be born!

We implement functionality for tasks and processes and write our own keyboard drivers.

In this course you also get to learn how memory management works, we implement the “malloc” and “free” functions creating our very own heap that’s designed to keep track of what memory is being used. Memory management is essential in any operating system and kernel.

Let us not forget that we even create an ELF file loader, we will compile all our operating systems programs into ELF files and allow the loading of binary programs or ELF programs. ELF files contain a lot of information that describes our program for example where our program should be loaded into memory and the different sections of the program.

By the end of this course you will have a fully functioning 32 bit multi-tasking kernel that can have many processes and tasks running at the same time. You will have a working shell that we can use as well.

Assembly language bonus

This is a bonus section designed to bring your assembly skills up to scratch should you struggle a little bit with the assembly language in this course. It’s however advised you come to this course with experience in assembly language, we do use it and its important. Never the less if you want to take a chance on this course with no assembly experience then this section will help point you in the right direction so your able to take what you learned and apply it to the kernel.

Taught by an expert that has created Linux kernel modules professionally in the work place. 15 Years Experience As A Software Engineer

Course Curriculum

Chapter 1: Introduction

Lecture 1: Introduction

Chapter 2: Setup And A Brief Explanation Of Kernel Development

Lecture 1: What Is Memory?

Lecture 2: The Boot Process

Lecture 3: Installing What We Need For Real Mode Development

Chapter 3: Real Mode Development

Lecture 1: Hello World Bootloader

Lecture 2: Understanding Real Mode

Lecture 3: Segmentation Memory Model

Lecture 4: Improving Our Bootloader

Lecture 5: Preparing our bootloader to be booted on real hardware

Lecture 6: Writing our bootloader to a USB stick

Lecture 7: Booting the bootloader

Lecture 8: The Interrupt Vector Table Explained

Lecture 9: Implementing our own interrupts in real mode

Lecture 10: Disk Access And How It Works

Lecture 11: Reading from the hard disk

Chapter 4: Protected Mode Development

Lecture 1: What is Protected Mode?

Lecture 2: Switching To Protected Mode

Lecture 3: Restructuring Our Project

Lecture 4: Enabling the A20 line

Lecture 5: Creating a Cross Compiler So We Can Code In C

Lecture 6: Loading our 32 bit kernel into memory and working with debugging symbols

Lecture 7: Cleaning our object files

Lecture 8: Dealing With Alignment Issues

Lecture 9: C Code In Protected Mode

Lecture 10: Text Mode Explained

Lecture 11: Writing To The Screen, Hello World Tutorial

Lecture 12: Interrupt Descriptor Table Explained

Lecture 13: Implementing The Interrupt Descriptor Table

Lecture 14: Implementing In and Out Functions

Lecture 15: Programmable Interrupt Controller Explained

Lecture 16: Programmable Interrupt Controller Implementation

Lecture 17: Understanding The Heap And Memory Allocation

Lecture 18: Implementing Our Heap

Lecture 19: Creating the enable interrupts function

Lecture 20: Understanding Paging

Lecture 21: Implementing Paging

Lecture 22: Modifying the page table

Lecture 23: Preparing To Read From The Hard Disk

Lecture 24: Reading from the disk in C with the ATA controller

Lecture 25: Improving Our Disk Driver

Lecture 26: What is a filesystem?

Lecture 27: Creating a path parser

Lecture 28: Creating a disk stream

Lecture 29: File Allocation Table Explained

Lecture 30: Starting To Create our FAT File system

Lecture 31: Understanding the VFS(Virtual File System) Layer

Lecture 32: Implementing our virtual filesystem core functionality

Lecture 33: implementing FAT16 filesystem driver core functionality

Lecture 34: Implementing FAT16 Structures

Lecture 35: Implementing The FAT16 Resolver Function

Lecture 36: Implementing the VFS fopen function

Lecture 37: Implementing FAT16 fopen function

Lecture 38: Implementing the VFS fread function

Lecture 39: Implementing FAT16 fread functionality

Lecture 40: Implementing the VFS fseek functionality

Lecture 41: Implementing the FAT16 fseek functionality

Lecture 42: Implementing the fstat VFS functionality

Lecture 43: Implementing the FAT16 fstat function

Lecture 44: Implementing the VFS fclose functionality

Lecture 45: Implementing the FAT16 fclose functionality

Lecture 46: Implementing a kernel panic

Lecture 47: Understanding User Land

Lecture 48: Changing our kernel segment and data descriptors to be written in C

Lecture 49: Implementing The TSS(Task Switch Segment)

Lecture 50: Implementing Task Foundations

Lecture 51: Implementing Process Foundations Part 1

Lecture 52: Implementing Process Foundations Part 2

Lecture 53: Packing the GDT

Lecture 54: Implementing User Land Functionality

Lecture 55: Creating our first user process application

Lecture 56: Executing the process and dropping into user land privileges

Lecture 57: Changing the paging functionality

Lecture 58: Talking with the kernel from userland

Lecture 59: Creating the interrupt 0x80 for user process to kernel communication

Lecture 60: Creating the ability to create and execute kernel commands

Lecture 61: Creating our first kernel command

Lecture 62: Calling our kernel command

Lecture 63: Copying strings from the tasks process

Lecture 64: Reading the task's stack

Lecture 65: Creating the print command in the kernel

Lecture 66: Understanding keyboard access in protected mode

Lecture 67: Creating the virtual keyboard layer

Lecture 68: Creating the PS2 port keyboard driver part 1

Lecture 69: Improving our interrupt descriptor table design

Lecture 70: Creating a cleaner way to create interrupt handlers in the interrupt descriptor

Lecture 71: Changing The Current Process

Lecture 72: Creating the PS2 port keyboard driver part 2

Lecture 73: Getting a key from the keyboard buffer in user land

Lecture 74: Creating a putchar command that writes one character to the terminal

Lecture 75: Implementing backspace in the terminal

Lecture 76: Revising our stream reader

Lecture 77: Elf Files Explained

Lecture 78: Implementing The Elf Loader – Part 1

Lecture 79: Implementing The Elf Loader – Part 2

Lecture 80: Implementing The Elf Loader – Part 3

Lecture 81: Implementing The Elf Loader – Part 4

Instructors

Daniel McCarthy
Compiler developer in my spare time

Rating Distribution

1 stars: 8 votes
2 stars: 16 votes
3 stars: 65 votes
4 stars: 348 votes
5 stars: 869 votes

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