Using breakpoints, Breakpoint types | ARM Version 1.6 guide

Quick-start Tutorial

6.Right-click to display the Source Variable Name menu, shown in Figure 4-10 on page 4-19.

7.Select Watch from the menu. This adds the chosen variable to the Watch pane and displays the current value, if known.

8.Click the Go button on the toolbar to execute the image.

9.Click the Stop Execution button to stop the program before it finishes.

With the processor halted, monitor changes in the variables in the Watch pane. Depending on where you halted execution, values that changed at the last pane update are displayed in dark blue. Values that changed at a previous pane update are displayed in light blue.

You can remove variables from the Watch pane. Highlight the entry and press Delete. The values list is refreshed after the entry has been removed.

4.3.3Using breakpoints

Breakpoints are specified locations where execution should stop. The breakpoint is triggered either by:

•execution reaching the specified address

•data values at the specified location, in the current context, changing or becoming equal to a particular value.

Breakpoints let you suspend program execution when the program accesses specific memory locations, variables, or functions. You can define conditions that are tested or qualify the breakpoint to define when execution stops. This section describes:

•Breakpoint types

•Actions and qualifiers on page 4-23

•Managing breakpoints on page 4-25.

Breakpoint types

RealView Debugger enables you to use different types of breakpoint when you are debugging your image. Breakpoint types are dependent on the hardware support provided by your debug target:

Simple These breakpoints enable you to test address-specific data values. These breakpoints can be either hardware or software breakpoints.

Simple breakpoints are supported by all ARM processors.

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Copyright © 2002 ARM Limited. All rights reserved.

ARM DUI 0181B

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ARM Version 1.6 manual Using breakpoints, Breakpoint types

Contents

RealView Debugger RealView Debugger Essentials Guide RealView Debugger Essentials Guide Chapter About RealView Debugger Chapter Ending your RealView Debugger Session Preface About this book Using this bookIntended audience Typographical conventions Further reading ARM publications Other publications Contact information for MaxCore from Axys is available at Feedback on RealView Debugger FeedbackFeedback on this book Xii About RealView Debugger Single connection access Multiprocessor accessRealView Debugger concepts and terminology Debug target Multithreaded operation Components of RealView Debugger About the debugging environmentTarget Vehicle Server TVS Debug target interface RealView Connection BrokerPersistence information Debugging mode Using the documentation suite ARM DUI 0181B Features of RealView Debugger Multi-core debugging OS awarenessExtended Target Visibility ETV Advanced debugging facilities Trace, Analysis, and Profiling Project manager RealView Debugger downloads Getting more information online ARM DUI 0181B Getting Started with RealView Debugger Starting RealView Debugger Starting RealView DebuggerCode window Code window Target configuration Connecting to a targetWorking with connections Making a connection Connection Control window Setting connect mode RDI connection details Setting top of memory and stack values Working with memory Setting top of memory for a session Setting top of memory for session Changed settings in the Register pane Loading an image Loading an image Code window with an image loaded Unattached What is shown in the title bar?Reloading an image Unloading an image Debugging an image Getting started Code views Viewing target status ARM DUI 0181B Quick-start Tutorial How to use the tutorial Setting up your first project Build-Tool Properties for a Typical installation Defining your build tools Creating a new project Defining a Standard Project Create Standard Project dialog box Viewing the project settings Setting up compiler options Customizing your project Project base directory Building the application Project files Project Directory/filename Description Contains Executable files Backup filesClosing the project ARM DUI 0181B Debugging with RealView Debugger Displaying register contents Basic debugging tasks Changing register contents Process control Process Control pane Displaying memory contents Updated memory contents Select File → Reload Image to Target to reload the image Displaying variablesTooltip evaluation Using the call stack 11 Local variables in the Call Stack pane Using browsers and lists Setting watches Using breakpoints Breakpoint types Actions and qualifiers Unconditional Select When Expression True... from the menu 12 Set Address/Data Break/Tracepoint dialog box Managing breakpoints 13 Break/Tracepoints pane ARM DUI 0181B Working with custom panes Customizing your debug views Hiding panes 14 Example Code window More about projects Changing build tools Viewing build settings Adding files to your project Adding source files to a project Generated makefiles Adding object files to a projectViewing the makefile Build error reporting Finding build errorsBuilding an application ARM DUI 0181B Removing tutorial project files Completing the tutorialRemoving the tutorial project ARM DUI 0181B Ending your RealView Debugger Session Saving the session Workspace Startup file History file Settings options Disconnecting from a target Setting disconnect mode ARM DUI 0181B Exiting RealView Debugger Closing down without a connectionClosing down with a connection Maintaining the connection Reconnecting to a target Terminating the connection RealView Debugger Desktop About the desktop Splash screen Default Code window Title bar Title bar Default windows and panes File Editor pane Middle pane row Call Stack paneCall Stack Watch pane Memory pane Bottom paneChanging panes Formatting pane views Pane Content Pane controlsVisual controls Expand/Collapse Pane Color Box Color Box Other window elements Cursor location fieldShows that output is being written to a log file Shows that output is being written to a journal file Finding options on the main menu File Find EditView Tools 10 Project menu Help 12 Debug menu Working with button toolbars Actions toolbar Threads button Pane Management controlsProcessor State group Unknown Source control button Customizing the Actions toolbar ARM DUI 0181B Floating, docking, and resizing windows and panes Working in the Code windowChanging the focus In-place editing Working with tabs Editor window 15 Editor Window Resource Viewer window 16 Resource Viewer window File menu Help menu Resources list Details area Analysis window 17 Analysis window Configuration Files Reference Overview Files in the etc directory SPR template used by RealView Debugger Files in the home directory These files are referenced by the .rbe files Means that the installation files are not changed ARM-Thumb Procedure Call Standard Glossary See Pop-up menu See Joint Test Action Group Real Time Operating System Used by the ARM standard C library to handle semihosting See Target Vehicle Server Index Caps See also Glossary Mscclock RDI Index-5 Index-6