| <!DOCTYPE HTML> |
| <!-- NewPage --> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc (16) --> |
| <title>Unwind (OpenJ9 JDK 16)</title> |
| <meta name="viewport" content="width=device-width, initial-scale=1"> |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> |
| <meta name="description" content="declaration: module: openj9.dtfj, package: com.ibm.j9ddr.corereaders.elf.unwind, class: Unwind"> |
| <meta name="generator" content="javadoc/ClassWriterImpl"> |
| <meta name="keywords" content="com.ibm.j9ddr.corereaders.elf.unwind.Unwind class"> |
| <meta name="keywords" content="addCallFrameInformation()"> |
| <meta name="keywords" content="readUnsignedLEB128()"> |
| <meta name="keywords" content="readSignedLEB128()"> |
| <meta name="keywords" content="getUnwindTableForInstructionAddress()"> |
| <link rel="stylesheet" type="text/css" href="../../../../../../../stylesheet.css" title="Style"> |
| <link rel="stylesheet" type="text/css" href="../../../../../../../script-dir/jquery-ui.min.css" title="Style"> |
| <link rel="stylesheet" type="text/css" href="../../../../../../../jquery-ui.overrides.css" title="Style"> |
| <script type="text/javascript" src="../../../../../../../script.js"></script> |
| <script type="text/javascript" src="../../../../../../../script-dir/jquery-3.5.1.min.js"></script> |
| <script type="text/javascript" src="../../../../../../../script-dir/jquery-ui.min.js"></script> |
| </head> |
| <body class="class-declaration-page"> |
| <script type="text/javascript">var evenRowColor = "even-row-color"; |
| var oddRowColor = "odd-row-color"; |
| var tableTab = "table-tab"; |
| var activeTableTab = "active-table-tab"; |
| var pathtoroot = "../../../../../../../"; |
| loadScripts(document, 'script');</script> |
| <noscript> |
| <div>JavaScript is disabled on your browser.</div> |
| </noscript> |
| <div class="flex-box"> |
| <header role="banner" class="flex-header"> |
| <nav role="navigation"> |
| <!-- ========= START OF TOP NAVBAR ======= --> |
| <div class="top-nav" id="navbar.top"> |
| <div class="skip-nav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div> |
| <div class="about-language"><div style="margin-top: 9px;"><strong>OpenJ9 JDK 16</strong></div></div> |
| <ul id="navbar.top.firstrow" class="nav-list" title="Navigation"> |
| <li><a href="../../../../../../../index.html">Overview</a></li> |
| <li><a href="../../../../../../module-summary.html">Module</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="nav-bar-cell1-rev">Class</li> |
| <li><a href="class-use/Unwind.html">Use</a></li> |
| <li><a href="package-tree.html">Tree</a></li> |
| <li><a href="../../../../../../../deprecated-list.html">Deprecated</a></li> |
| <li><a href="../../../../../../../index-files/index-1.html">Index</a></li> |
| <li><a href="../../../../../../../help-doc.html">Help</a></li> |
| </ul> |
| </div> |
| <div class="sub-nav"> |
| <div> |
| <ul class="sub-nav-list"> |
| <li>Summary: </li> |
| <li><a href="#nested.class.summary">Nested</a> | </li> |
| <li>Field | </li> |
| <li><a href="#constructor.summary">Constr</a> | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="sub-nav-list"> |
| <li>Detail: </li> |
| <li>Field | </li> |
| <li><a href="#constructor.detail">Constr</a> | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <div class="nav-list-search"><label for="search">SEARCH:</label> |
| <input type="text" id="search" value="search" disabled="disabled"> |
| <input type="reset" id="reset" value="reset" disabled="disabled"> |
| </div> |
| </div> |
| <!-- ========= END OF TOP NAVBAR ========= --> |
| <span class="skip-nav" id="skip.navbar.top"> |
| <!-- --> |
| </span></nav> |
| </header> |
| <div class="flex-content"> |
| <main role="main"> |
| <!-- ======== START OF CLASS DATA ======== --> |
| <div class="header"> |
| <div class="sub-title"><span class="module-label-in-type">Module</span> <a href="../../../../../../module-summary.html">openj9.dtfj</a></div> |
| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">com.ibm.j9ddr.corereaders.elf.unwind</a></div> |
| <h1 title="Class Unwind" class="title">Class Unwind</h1> |
| </div> |
| <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link" target="_blank">java.lang.Object</a> |
| <div class="inheritance">com.ibm.j9ddr.corereaders.elf.unwind.Unwind</div> |
| </div> |
| <section class="description"> |
| <hr> |
| <div class="type-signature"><span class="modifiers">public class </span><span class="element-name type-name-label">Unwind</span> |
| <span class="extends-implements">extends <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link" target="_blank">Object</a></span></div> |
| <div class="block">Class for parsing the unwind information from a .eh_frame header |
| |
| It creates a list of FDE's (Frame Description Entry) objects and |
| the associated CIE's (Common Information Entry) for the process |
| when created. |
| |
| It can then be used to get the unwind table for a given instruction |
| address. The table can then be applied to the current register state |
| to create the previous register state (or at least the register state |
| that matters for further unwinding.) |
| |
| See: |
| http://refspecs.linuxfoundation.org/LSB_3.0.0/LSB-Core-generic/LSB-Core-generic/ehframechpt.html</div> |
| </section> |
| <section class="summary"> |
| <ul class="summary-list"> |
| <!-- ======== NESTED CLASS SUMMARY ======== --> |
| <li> |
| <section class="nested-class-summary" id="nested.class.summary"> |
| <h2>Nested Class Summary</h2> |
| <div class="caption"><span>Nested Classes</span></div> |
| <div class="summary-table three-column-summary"> |
| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Class</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color"><code>protected class </code></div> |
| <div class="col-second even-row-color"><code><span class="member-name-link"><a href="Unwind.DW_EH_PE.html" title="class in com.ibm.j9ddr.corereaders.elf.unwind">Unwind.DW_EH_PE</a></span></code></div> |
| <div class="col-last even-row-color"> </div> |
| </div> |
| </section> |
| </li> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <li> |
| <section class="constructor-summary" id="constructor.summary"> |
| <h2>Constructor Summary</h2> |
| <div class="caption"><span>Constructors</span></div> |
| <div class="summary-table two-column-summary"> |
| <div class="table-header col-first">Constructor</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-constructor-name even-row-color"><code><span class="member-name-link"><a href="#%3Cinit%3E(com.ibm.j9ddr.corereaders.elf.LinuxProcessAddressSpace)">Unwind</a></span>​(<a href="../LinuxProcessAddressSpace.html" title="class in com.ibm.j9ddr.corereaders.elf">LinuxProcessAddressSpace</a> _process)</code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Create an unwinder for a process. eh_frame information is added later when |
| the program header entries containing it are found.</div> |
| </div> |
| </div> |
| </section> |
| </li> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <li> |
| <section class="method-summary" id="method.summary"> |
| <h2>Method Summary</h2> |
| <div id="method-summary-table"> |
| <div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab1" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab1', 3)" class="table-tab">Static Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div> |
| <div id="method-summary-table.tabpanel" role="tabpanel"> |
| <div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0"> |
| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Method</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color method-summary-table-tab2 method-summary-table-tab4 method-summary-table"><code>void</code></div> |
| <div class="col-second even-row-color method-summary-table-tab2 method-summary-table-tab4 method-summary-table"><code><span class="member-name-link"><a href="#addCallFrameInformation(long,com.ibm.j9ddr.corereaders.elf.ProgramHeaderEntry,java.lang.String)">addCallFrameInformation</a></span>​(long libraryBaseAddress, |
| <a href="../ProgramHeaderEntry.html" title="class in com.ibm.j9ddr.corereaders.elf">ProgramHeaderEntry</a> ph, |
| <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link" target="_blank">String</a> libName)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table-tab4 method-summary-table"> </div> |
| <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table-tab4 method-summary-table"><code><a href="UnwindTable.html" title="class in com.ibm.j9ddr.corereaders.elf.unwind">UnwindTable</a></code></div> |
| <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table-tab4 method-summary-table"><code><span class="member-name-link"><a href="#getUnwindTableForInstructionAddress(long)">getUnwindTableForInstructionAddress</a></span>​(long instructionPointer)</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table-tab4 method-summary-table"> </div> |
| <div class="col-first even-row-color method-summary-table-tab1 method-summary-table-tab4 method-summary-table"><code>static long</code></div> |
| <div class="col-second even-row-color method-summary-table-tab1 method-summary-table-tab4 method-summary-table"><code><span class="member-name-link"><a href="#readSignedLEB128(javax.imageio.stream.ImageInputStream)">readSignedLEB128</a></span>​(<a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.desktop/javax/imageio/stream/ImageInputStream.html" title="class or interface in javax.imageio.stream" class="external-link" target="_blank">ImageInputStream</a> cfiStream)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab1 method-summary-table-tab4 method-summary-table"> </div> |
| <div class="col-first odd-row-color method-summary-table-tab1 method-summary-table-tab4 method-summary-table"><code>static long</code></div> |
| <div class="col-second odd-row-color method-summary-table-tab1 method-summary-table-tab4 method-summary-table"><code><span class="member-name-link"><a href="#readUnsignedLEB128(javax.imageio.stream.ImageInputStream)">readUnsignedLEB128</a></span>​(<a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.desktop/javax/imageio/stream/ImageInputStream.html" title="class or interface in javax.imageio.stream" class="external-link" target="_blank">ImageInputStream</a> cfiStream)</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab1 method-summary-table-tab4 method-summary-table"> </div> |
| </div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="methods.inherited.from.class.java.lang.Object">Methods declared in class java.lang.<a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link" target="_blank">Object</a></h3> |
| <code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link" target="_blank">clone</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link" target="_blank">equals</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link" target="_blank">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link" target="_blank">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link" target="_blank">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link" target="_blank">notify</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link" target="_blank">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link" target="_blank">toString</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link" target="_blank">wait</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link" target="_blank">wait</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link" target="_blank">wait</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <li> |
| <section class="constructor-details" id="constructor.detail"> |
| <h2>Constructor Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="<init>(com.ibm.j9ddr.corereaders.elf.LinuxProcessAddressSpace)"> |
| <h3>Unwind</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="element-name">Unwind</span>​<span class="parameters">(<a href="../LinuxProcessAddressSpace.html" title="class in com.ibm.j9ddr.corereaders.elf">LinuxProcessAddressSpace</a> _process)</span></div> |
| <div class="block">Create an unwinder for a process. eh_frame information is added later when |
| the program header entries containing it are found.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>_process</code> - The process the unwinder will work with.</dd> |
| </dl> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li> |
| <section class="method-details" id="method.detail"> |
| <h2>Method Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="addCallFrameInformation(long,com.ibm.j9ddr.corereaders.elf.ProgramHeaderEntry,java.lang.String)"> |
| <h3>addCallFrameInformation</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">addCallFrameInformation</span>​<span class="parameters">(long libraryBaseAddress, |
| <a href="../ProgramHeaderEntry.html" title="class in com.ibm.j9ddr.corereaders.elf">ProgramHeaderEntry</a> ph, |
| <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link" target="_blank">String</a> libName)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a>, |
| <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link" target="_blank">IOException</a></span></div> |
| <dl class="notes"> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link" target="_blank">IOException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="readUnsignedLEB128(javax.imageio.stream.ImageInputStream)"> |
| <h3>readUnsignedLEB128</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type">long</span> <span class="element-name">readUnsignedLEB128</span>​<span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.desktop/javax/imageio/stream/ImageInputStream.html" title="class or interface in javax.imageio.stream" class="external-link" target="_blank">ImageInputStream</a> cfiStream)</span> |
| throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link" target="_blank">IOException</a></span></div> |
| <dl class="notes"> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link" target="_blank">IOException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="readSignedLEB128(javax.imageio.stream.ImageInputStream)"> |
| <h3>readSignedLEB128</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type">long</span> <span class="element-name">readSignedLEB128</span>​<span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.desktop/javax/imageio/stream/ImageInputStream.html" title="class or interface in javax.imageio.stream" class="external-link" target="_blank">ImageInputStream</a> cfiStream)</span> |
| throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link" target="_blank">IOException</a></span></div> |
| <dl class="notes"> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link" target="_blank">IOException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getUnwindTableForInstructionAddress(long)"> |
| <h3>getUnwindTableForInstructionAddress</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="UnwindTable.html" title="class in com.ibm.j9ddr.corereaders.elf.unwind">UnwindTable</a></span> <span class="element-name">getUnwindTableForInstructionAddress</span>​<span class="parameters">(long instructionPointer)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a>, |
| <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link" target="_blank">IOException</a></span></div> |
| <dl class="notes"> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link" target="_blank">IOException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <!-- ========= END OF CLASS DATA ========= --> |
| </main> |
| <footer role="contentinfo"> |
| <hr> |
| <p class="legal-copy"><small><a href="https://www.eclipse.org/openj9/" target="_blank">Eclipse OpenJ9 website.</a><br> To raise a bug report or suggest an improvement create an <a href="https://github.com/eclipse-openj9/openj9/issues" target="_blank">Eclipse Openj9 issue.</a><br> Copyright © 1998, 2021, IBM Corp. and others.</small></p> |
| </footer> |
| </div> |
| </div> |
| </body> |
| </html> |
