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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 |
| specified by the user manually. The default behavior is to read the |
| description from the target. <span class="sc">gdb</span> retrieves it via the remote |
| protocol using ‘<samp><span class="samp">qXfer</span></samp>’ requests (see <a href="General-Query-Packets.html#General-Query-Packets">qXfer</a>). The <var>annex</var> in the ‘<samp><span class="samp">qXfer</span></samp>’ packet will be |
| ‘<samp><span class="samp">target.xml</span></samp>’. The contents of the ‘<samp><span class="samp">target.xml</span></samp>’ annex are an |
| XML document, of the form described in <a href="Target-Description-Format.html#Target-Description-Format">Target Description Format</a>. |
| |
| <p>Alternatively, you can specify a file to read for the target description. |
| If a file is set, the target will not be queried. The commands to |
| specify a file are: |
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| <a name="index-set-tdesc-filename-2536"></a> |
| <dl><dt><code>set tdesc filename </code><var>path</var><dd>Read the target description from <var>path</var>. |
| |
| <p><a name="index-unset-tdesc-filename-2537"></a><br><dt><code>unset tdesc filename</code><dd>Do not read the XML target description from a file. <span class="sc">gdb</span> |
| will use the description supplied by the current target. |
| |
| <p><a name="index-show-tdesc-filename-2538"></a><br><dt><code>show tdesc filename</code><dd>Show the filename to read for a target description, if any. |
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