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108 lines
4.8 KiB
HTML
108 lines
4.8 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1988-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Free Software" and "Free Software Needs
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Free Documentation", with the Front-Cover Texts being "A GNU Manual,"
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and with the Back-Cover Texts as in (a) below.
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(a) The FSF's Back-Cover Text is: "You are free to copy and modify
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this GNU Manual. Buying copies from GNU Press supports the FSF in
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developing GNU and promoting software freedom." -->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Retrieving Descriptions (Debugging with GDB)</title>
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<meta name="description" content="Retrieving Descriptions (Debugging with GDB)">
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<meta name="keywords" content="Retrieving Descriptions (Debugging with GDB)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Target-Descriptions.html#Target-Descriptions" rel="up" title="Target Descriptions">
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<link href="Target-Description-Format.html#Target-Description-Format" rel="next" title="Target Description Format">
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<link href="Target-Descriptions.html#Target-Descriptions" rel="prev" title="Target Descriptions">
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<style type="text/css">
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ul.no-bullet {list-style: none}
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-->
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</style>
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</head>
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<body lang="en">
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<a name="Retrieving-Descriptions"></a>
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<div class="header">
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<p>
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Next: <a href="Target-Description-Format.html#Target-Description-Format" accesskey="n" rel="next">Target Description Format</a>, Up: <a href="Target-Descriptions.html#Target-Descriptions" accesskey="u" rel="up">Target Descriptions</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Retrieving-Descriptions-1"></a>
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<h3 class="section">G.1 Retrieving Descriptions</h3>
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<p>Target descriptions can be read from the target automatically, or
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specified by the user manually. The default behavior is to read the
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description from the target. <small>GDB</small> retrieves it via the remote
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protocol using ‘<samp>qXfer</samp>’ requests (see <a href="General-Query-Packets.html#General-Query-Packets">qXfer</a>). The <var>annex</var> in the ‘<samp>qXfer</samp>’ packet will be
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‘<samp>target.xml</samp>’. The contents of the ‘<samp>target.xml</samp>’ annex are an
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XML document, of the form described in <a href="Target-Description-Format.html#Target-Description-Format">Target Description Format</a>.
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</p>
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<p>Alternatively, you can specify a file to read for the target description.
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If a file is set, the target will not be queried. The commands to
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specify a file are:
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</p>
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<dl compact="compact">
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<dd><a name="index-set-tdesc-filename"></a>
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</dd>
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<dt><code>set tdesc filename <var>path</var></code></dt>
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<dd><p>Read the target description from <var>path</var>.
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</p>
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<a name="index-unset-tdesc-filename"></a>
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</dd>
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<dt><code>unset tdesc filename</code></dt>
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<dd><p>Do not read the XML target description from a file. <small>GDB</small>
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will use the description supplied by the current target.
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</p>
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<a name="index-show-tdesc-filename"></a>
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</dd>
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<dt><code>show tdesc filename</code></dt>
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<dd><p>Show the filename to read for a target description, if any.
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</p></dd>
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</dl>
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</body>
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</html>
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