Contents

Part I: ARM Systems and Development

Chapter 1: The History of ARM

The Origin of ARM

ARM Naming Conventions

Manufacturer Documentation

What Is ARM Doing Today?

Summary

Chapter 2: ARM Embedded Systems

ARM Embedded Systems Defined

Choosing the Right Processor

What Should You Start With?

Summary

Chapter 3: ARM Architecture

Understanding the Basics

Getting to Know the Different ARM Subsystems

Understanding the Different Concepts

Presenting Different Technologies

Summary

Chapter 4: ARM Assembly Language

Introduction to Assembly Language

Talking to a Computer

Why Learn Assembly?

Uses of Assembly

ARM Assembly Language

ARM Assembly Primer

Summary

Chapter 5: First Steps

Hello World!

Taking the World Apart

Hello World, for Real This Time!

Software Implementation

Memory Mapping

Real World Examples

Case Study: U-Boot

Machine Study: Raspberry Pi

Summary

Chapter 6: Thumb Instruction Set

Thumb

Thumb-2 Technology

How Thumb Is Executed

Advantages of Using Thumb

Cores Using Thumb

ARM-Thumb Interworking

Introduction to Thumb-1

Introduction to Thumb-2

Writing for Thumb

Summary

Chapter 7: Assembly Instructions

Movement

Arithmetic

Saturating Arithmetic

Data Transfer

Logical

Compare

Branch

Multiply

Divide

Multiple Register Data Transfer

Barrel Shifter

Stack Operations

Coprocessor Instructions

Miscellaneous Instructions

Summary

Chapter 8: NEON

What Are the Advantages to NEON?

What Data Types Does NEON Support?

Using NEON in Assembly

Using NEON in C

Summary

Chapter 9: Debugging

What Is a Debugger?

Types of Debugging

Debuggers

Example Debugging

In-Depth Analysis

Summary

Chapter 10: Writing Optimized C

Rules for Optimized Code

Profiling

C Optimizations

Assembly Optimizations

Hardware Configuration Optimizations

Summary

Part II: Reference

Appendix A: Terminology

Appendix B: ARM Architecture Versions

Appendix C: ARM Core Versions

Appendix D: NEON Intrinsics and Instructions

Appendix E: Assembly Instructions

Introduction