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7<title>SetUserExceptionHandler</title>
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10<h1><CODE>nn::os::ARM::SetUserExceptionHandler</CODE> Function</h1>
11<h2>Syntax</h2>
12    <div class="section">
13      <pre class="definition">
14void SetUserExceptionHandler(
15     <a href="../../../nn/os/ARM/UserExceptionHandler.html">UserExceptionHandler</a> pHandler,
16     uptr stackBottom
17);
18</pre>
19    </div>
20<h2>Arguments</h2>
21    <div class="section">
22      <table class="arguments">
23        <thead>
24          <tr>
25            <td width="15" />
26<th>Name</th>
27<td>Description</td>
28          </tr>
29        </thead>
30        <tr>
31<td>in</td>
32<th>pHandler</th>
33<td>Specifies the exception handler called when an exception occurs.</td>
34        </tr>
35        <tr>
36<td>in</td>
37<th>stackBottom</th>
38<td>Specifies the stack to use for the exception handler. You must specify the bottom of the stack.</td>
39        </tr> </table>
40    </div>
41<h2>Return Values</h2>
42    <div class="section">
43None.
44               </div>
45<h2>Description</h2>
46    <div class="section">
47<p>Sets the exception handler.</p><p>When an exception handler is specified and an exception occurs, the function specified by the <SPAN class="argument">pHandler</SPAN> parameter is called in the context of the thread where the exception occurred. The stack specified in <SPAN class="argument">stackBottom</SPAN> is used.</p><p>The instances of <a href="../../../nn/os/ARM/ExceptionInfo/Overview.html"><CODE>ExceptionInfo</CODE></a> and <a href="../../../nn/os/ARM/ExceptionContext/Overview.html"><CODE>ExceptionContent</CODE></a> that are passed to <SPAN class="argument">pHandler</SPAN> are allocated from the stack specified by <SPAN class="argument">stackBottom</SPAN>. The minimum stack size, therefore, must be <CODE>sizeof(ExceptionContext) + sizeof(ExceptionInfo)</CODE>.</p><p>Note that special processing, such as disabling interrupts, is not used when calling the exception handler. The exception handler stack breaks if an exception occurs during exception handling.</p><p>Note that the exception handler cannot be called in the debug environment.</p><!-- write here --></div>
48<h2>Revision History</h2>
49    <div class="section">
50      <dl class="history">
51        <dt>2010/09/16</dt>
52<dd>Added mention that the exception handler is not called in the debug environment.<br />
53        </dd>
54        <dt>2010/08/16</dt>
55<dd>Initial version.<br />
56        </dd>
57      </dl>
58    </div>
59  <hr><p>CONFIDENTIAL</p></body>
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