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Mastering Embedded Linux Programming

Mastering Embedded Linux Programming

By : Frank Vasquez, Chris Simmonds
4.6 (23)
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Mastering Embedded Linux Programming

Mastering Embedded Linux Programming

4.6 (23)
By: Frank Vasquez, Chris Simmonds

Overview of this book

If you’re looking for a book that will demystify embedded Linux, then you’ve come to the right place. Mastering Embedded Linux Programming is a fully comprehensive guide that can serve both as means to learn new things or as a handy reference. The first few chapters of this book will break down the fundamental elements that underpin all embedded Linux projects: the toolchain, the bootloader, the kernel, and the root filesystem. After that, you will learn how to create each of these elements from scratch and automate the process using Buildroot and the Yocto Project. As you progress, the book will show you how to implement an effective storage strategy for flash memory chips and install updates to a device remotely once it’s deployed. You’ll also learn about the key aspects of writing code for embedded Linux, such as how to access hardware from apps, the implications of writing multi-threaded code, and techniques to manage memory in an efficient way. The final chapters demonstrate how to debug your code, whether it resides in apps or in the Linux kernel itself. You’ll also cover the different tracers and profilers that are available for Linux so that you can quickly pinpoint any performance bottlenecks in your system. By the end of this Linux book, you’ll be able to create efficient and secure embedded devices using Linux.
Table of Contents (27 chapters)
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1
Section 1: Elements of Embedded Linux
10
Section 2: System Architecture and Design Decisions
18
Section 3: Writing Embedded Applications
22
Section 4: Debugging and Optimizing Performance

Debugging applications

You can use GDB to debug applications in one of two ways: if you are developing code to run on desktops and servers, or indeed any environment where you compile and run the code on the same machine, it is natural to run GDB natively. However, most embedded development is done using a cross toolchain, and hence you want to debug code running on the device but control it from the cross-development environment, where you have the source code and the tools. I will focus on the latter case, since it is the most likely scenario for embedded developers, but I will also show you how to set up a system for native debugging. I am not going to describe the basics of using GDB here since there are many good references on that topic already, including the GDB user manual and the suggested Further reading section at the end of the chapter.

Remote debugging using gdbserver

The key component for remote debugging is the debug agent, gdbserver, which runs on the target and...

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