2.1. Introduction

This chapter gives a basic, practical understanding of how to write ARM assembly language modules. It also gives information on the facilities provided by the ARM assembler (armasm).

This chapter does not provide a detailed description of the ARM, Thumb®-2, Thumb, or VFP instruction sets. For this information see:

For more information, see ARM Architecture Reference Manual and ARM Architecture Reference Manual, Thumb-2 supplement.

For the convenience of programmers who are already familiar with ARM and Thumb assembly languages, this chapter includes a section outlining the differences between the latest version of the ARM assembly language and earlier versions of the ARM and Thumb assembly languages, see Assembly language changes.

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