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Preface Introduction Writing ARM Assembly Language
Introduction Overview of the ARM architecture Architecture versions ARM, Thumb, Thumb‑2, and Thumb‑2EE instruction ARM, Thumb, and ThumbEE state Processor mode Registers Instruction set overview Instruction capabilities Structure of assembly language modules Layout of assembly language source files An example ARM assembly language module Calling subroutines Conditional execution The ALU status flags Conditional execution Using conditional execution Example of the use of conditional execution The Q flag Loading constants into registers Direct loading with MOV and MVN Loading with MOV32 Loading with LDR Rd, =const Loading addresses into registers Direct loading with ADR and ADRL Loading addresses with LDR Rd, =label Load and store multiple register instructions Load and store multiple instructions available in Implementing stacks with LDM and STM Block copy with LDM and STM Using macros Test‑and‑branch macro example Unsigned integer division macro example Using frame directives Assembly language changes Assembler Reference ARM and Thumb Instructions Directives ReferenceIntroduction
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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, instruction sets. For this information see Chapter 4 ARM and Thumb Instructions.
For more information, see ARM Architecture Reference Manual.
For the convenience of programmers who are familiar with the ARM and Thumb assembly languages accepted in RVCT2.1 and earlier, this chapter includes a section outlining the differences between them and the latest version of the ARM assembly language. See Assembly language changes.
| Copyright © 2007 ARM Limited. All rights reserved. | ARM DUI 0379A |
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