ARM ® Developer Suite AXD and armsd Debuggers Guide

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1.1 Debugger concepts
This section introduces some of the concepts involved in debugging program images.
1.1.1 Debugger
A debugger is software that enables you to make use of a debug agent in order to
examine and control the execution of software running on a debug target. This part of
the book covers AXD, the ARM eXtended Debugger. The second part of this book
covers armsd, the ARM Symbolic Debugger.
1.1.2 Debug target
At an early stage of product development there might be no hardware. The expected
behavior of the product is simulated by software. Even though you might run this
software on the same computer as the debugger, it is useful to think of the target as a
separate piece of hardware.

ARM ® Developer Suite CodeWarrior® IDE Guide

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• See Chapter 9 Configuring a Build Target for information on configuring the
ARM toolchain from within the CodeWarrior IDE.
1.3.1 Online documentation and online help
Documentation for the CodeWarrior IDE for the ARM Developer Suite is available
online as part of the ARM Developer Suite documentation collection. If you have
installed ADS using the default name, select Programs → ARM Developer Suite
v1.2 → Online Books from the Windows Start menu to access the collection.
In addition, the CodeWarrior IDE for the ARM Developer Suite provides
context-sensitive online help. You can access this in either of the following ways:
• Click on the question mark icon at the top right corner of the window. A question
mark appears alongside the mouse pointer. Click with the mouse pointer on the
item that you want help with.

ARM ® Developer Suite Compilers and Libraries Guide

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PowerPac -- Getting Started with IAR Embedded Workbench®

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Programming languages

There are two high-level programming languages you can use with the IAR

C/C++ Compiler:

● C, which follows the standard ISO 9899:1990 (commonly known as

ANSI C).

● C++ (depends on your product package). IAR Systems supports two

levels of the C++ language:

● Embedded C++ (EC++), a subset of the C++ programming standard. It

is defined by an industry consortium, the Embedded C++ Technical

committee.

● IAR Extended Embedded C++, with additional features such as full

template support, multiple inheritance (depending on your product

package), namespace support, the new cast operators, as well as the

Standard Template Library (STL).

PowerPac -- 8051 IAR C/C++ Compiler Reference Guide for the

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RUNTIME ENVIRONMENT

To create the required runtime environment you should choose a runtime library and set

library options. You may also need to override certain library modules with your own

customized versions.

There are two different sets of runtime libraries provided:

● The IAR DLIB Library, which supports ISO/ANSI C and C++. This library also

supports floating-point numbers in IEEE 754 format and it can be configured to

include different levels of support for locale, file descriptors, multibyte characters,

et cetera. (This library is the default for the C++ language).

● The IAR CLIB Library is a light-weight library, which is not fully compliant with

ISO/ANSI C. Neither does it fully support floating-point numbers in IEEE 754

format nor does it support Embedded C++. (This library is used by default for the C

language).

PowerPac -- ARM® IAR Embedded Workbench マイグレーション

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XLINKと ILINK

XLINKと ILINKは両方とも、 1つ以上の再配置可能オブジェクトファイルと 1

つ以上のオブジェクトライブラリの指定部分を結合し、実行可能イメージを

生成します。 XLINKでは、 IARシステムズのツールによって生成される

UBROFフォーマットのオブジェクトファイルしか入力に使用できません。出

力は、 UBROFまたは XLINKがサポートしているその他の出力フォーマットで

行われます。 ILINKでは、 ELFフォーマットのオブジェクトファイルを入力に

使用し、 ELFフォーマットの実行可能イメージを生成します。

バージョン 4.xでは、コンパイラはコードおよびデータを UBROFのセグメント

に配置します。このセグメントは、 XLINKにより、リンカコマンドファイル

で指定されているディレクティブに従って、メモリに配置されます。リンカ

コマンドファイルは、コマンドラインを拡張したもので、あらゆる XLINKの

コマンドラインオプションを指定するこ とができます。バージョン 5.xでは、

コンパイラはコードおよびデータを ELFのセクションに配置します。

PowerPac -- IAR C/C++ Development Guide Compiling and linkin

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The DLIB runtime

environment

This chapter describes the runtime environment in which an application

executes. In particular, the chapter covers the DLIB runtime library and how

you can modify it—setting options, overriding default library modules, or

building your own library—to optimize it for your application.

The chapter also covers system initialization and termination; how an

application can control what happens before the function main is called, and

how you can customize the initialization.

The chapter then describes how to configure functionality like locale and file

I/O, how to get C-SPY® runtime support, and how to prevent incompatible

modules from being linked together.