| author | timkelly |
| Mon, 26 Jul 2010 11:32:21 -0500 | |
| branch | C3_BUILDER_WORK |
| changeset 1681 | 6636e8c75e66 |
| parent 1024 | 48b401835d0a |
| permissions | -rw-r--r-- |
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" |
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"http://www.w3.org/TR/html4/loose.dtd"> |
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<html><head> |
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<title>Unhandled Exceptions</title> |
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<link href="sysdoc-eclipse.css" type="text/css" rel="stylesheet" media="screen"> |
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<link href="sysdoc-eclipse.css" type="text/css" rel="stylesheet" media="print"> |
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<link href="../../book.css" type="text/css" rel="stylesheet" > |
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<div class="Head1"> |
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<h2>Unhandled Exceptions</h2> |
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</div> |
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<div> |
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<p>If the <em>Fault Category</em> is <em>Exception</em>, then |
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the fault is caused by an unhandled processor exception. You can get further |
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information on the type of exception by looking at the first three lines of the |
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generated output:</p> |
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<p class="listing">Fault Category: Exception Fault Reason: 10000000<br> |
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ExcId 00000001 CodeAddr f800415c DataAddr 00000000 Extra 00000005<br>Exc 1 Cpsr=60000013 FAR=00000000 FSR=00000005</p> |
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<p> The CodeAddr and DataAddr fields show |
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the address of the instruction that caused the exception and, depending on the |
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type of exception and instruction, the address of the data the instruction was |
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trying to access. You can use the CodeAddr value to find the |
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function which was being executed by <a href="CrashDebuggerUsingMAKSYM-Ref.guide.html">using the MAKSYM tool</a>.</p> |
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<p>The number after ExcId is the type of exception, in |
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hexadecimal, and is one of the |
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<a href="CrashDebuggerARMexceptionsProcessorModes.guide.html#debugging%2earm%2dexceptions%2dprocessormodes%2eexceptions" title="ARM Exception types, fault status register values, processor modes / ARM exception types">ARM exception types</a>. The meaning of the numbers depends on the type of |
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processor.</p> |
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<ul> |
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<li> |
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<p>If the exception is a prefetch abort, then the code address is |
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invalid.</p> |
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</li> |
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<li> |
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<p>A data abort means that the code address is invalid.</p> |
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</li> |
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</ul> |
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<p>The number after FAR is the fault address register; |
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this is the address that caused the fault.</p> |
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<p>The number after FSR is the |
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<a href="CrashDebuggerARMexceptionsProcessorModes.guide.html#debugging%2earm%2dexceptions%2dprocessormodes%2efsr" title="ARM Exception types, fault status register values, processor modes / Fault status register values (FSR register)">fault status register value</a> and shows why the MMU raised an exception.</p> |
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<p>The number after CPSR is the value of the CPU's CPSR register when |
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the exception occurred. The 5 least-significant bits of the CPSR register |
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indicate the <a href="CrashDebuggerARMexceptionsProcessorModes.guide.html#debugging%2earm%2dexceptions%2dprocessormodes%2ecpsr" title="ARM Exception types, fault status register values, processor modes / ARM processor modes (CPSR register)">ARM processor mode</a>.</p> |
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</div> |
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<div id="footer">Copyright © 2010 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. <br>License: <a href="http://www.eclipse.org/legal/epl-v10.html">http://www.eclipse.org/legal/epl-v10.html</a></div> |
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</body> |
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</html> |
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