Copyright © 2006-2010 ARM Limited. All rights reserved.
ARM DDI 0403C_errata_v3 (ID021910)
ARM
®
v7-M Architecture
Reference Manual
ii Copyright © 2006-2010 ARM Limited. All rights reserved. ARM DDI 0403C_errata_v3
Non-Confidential, Unrestricted Access ID021910
ARMv7-M Architecture Reference Manual
Copyright © 2006-2010 ARM Limited. All rights reserved.
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The following changes have been made to this document.
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Change history
Date Issue Confidentiality Change
June 2006 A Non-confidential Initial release
July 2007 B Non-confidential Second release, errata and changes documented separately
September 2008 C Non-confidential, Restricted Access Options for additional watchpoint based trace in the DWT, plus errata
updates and clarifications.
July 2009 C_errata Non-confidential Marked-up errata PDF, see page iii for more information.
February 2010 C_errata_v3 Non-confidential Additional marked-up errata PDF, see page iii for more information.
ARM DDI 0403C_errata_v3 Copyright © 2006-2010 ARM Limited. All rights reserved. iii
ID021910 Non-Confidential, Unrestricted Access
Restricted Rights Legend: Use, duplication or disclosure by the United States Government is subject to the restrictions
set forth in DFARS 252.227-7013 (c)(1)(ii) and FAR 52.227-19.
This document is Non-Confidential but any disclosure by you is subject to you providing notice to and the
acceptance by the recipient of, the conditions set out above.
In this document, where the term ARM is used to refer to the company it means “ARM or any of its subsidiaries as
appropriate”.
Note
The term ARM is also used to refer to versions of the ARM architecture, for example ARMv6 refers to version 6 of the
ARM architecture. The context makes it clear when the term is used in this way.
Note
• This errata PDF is regenerated from the source files of issue C of this document, but:
— Some pseudocode examples, that are imported into the document, have been updated. Markups highlight
significant changes in these pseudocode inserts.
Other pseudocode updates are made using the standard Acrobat editing tools.
— Pages ii and iii of the PDF have been replaced, by an edit to the PDF, to include an updated Proprietary
Notice.
With these exceptions, this PDF corresponds to the released PDF of issue C of the document, with errata indicated
by markups to the PDF:
— the original errata markups, issued June 2009, are identified as ARM_2009_Q2
— additional errata markups, issued February 2010, are identified as ARM_2009_Q4.
• In the revised pseudocode, the function
BadReg(x)
is replaced by a new construct,
x IN {13,15}
, that can be used
in other contexts. This is a format change only.
• From February 2010, issue C of the ARMv7-M ARM is superseded by issue D of the document. ARM strongly
recommends you to use issue D of the document in preference to using this errata PDF.
iv Copyright © 2006-2010 ARM Limited. All rights reserved. ARM DDI 0403C_errata_v3
Non-Confidential, Unrestricted Access ID021910
ARM DDI 0403C Copyright © 2006-2008 ARM Limited. All rights reserved. v
Restricted Access Non-Confidential
Contents
ARMv7-M Architecture Reference Manual
Preface
About this manual .............................................................................. xviii
Using this manual ............................................................................... xix
Conventions ....................................................................................... xxii
Further reading .................................................................................. xxiii
Feedback .......................................................................................... xxiv
Part A Application Level Architecture
Chapter A1 Introduction
A1.1 The ARM Architecture – M profile .................................................... A1-2
Chapter A2 Application Level Programmers’ Model
A2.1 About the Application level programmers’ model ............................. A2-2
A2.2 ARM core data types and arithmetic ................................................ A2-3
A2.3 Registers and execution state ........................................................ A2-11
A2.4 Exceptions, faults and interrupts .................................................... A2-15
A2.5 Coprocessor support ...................................................................... A2-16
Chapter A3 ARM Architecture Memory Model
A3.1 Address space ................................................................................. A3-2
