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50<title>About the <CODE>StartUp</CODE> API</title>
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52  <body>
53<h1>About the <CODE>StartUp</CODE> API</h1>
54<h2>Description</h2>
55    <div class="section">
56<p>This API is used to start up applications.</p><p>The application startup process is described below.</p><p><itemizedlist><listitem><para>Initialize BSS region.<br /></para></listitem><listitem><para>Call <CODE>nninitSystem</CODE>.<br /></para></listitem><listitem><para>Call <CODE>nninitStartUp</CODE>.<br /></para></listitem><listitem><para>Call static initializer.<br /></para></listitem><listitem><para>Call <CODE>nninitSetup</CODE>.<br /></para></listitem><listitem><para>Run <CODE>nnMain</CODE>.<br /><br /> The <CODE>nninitStartUp</CODE> function is compiled with weak symbols so it can be overridden with developers' own definitions. </para></listitem></itemizedlist>These functions are called before the C++ static initializer is called, so it is not possible to use instances within the static data of classes that don't have clear constructors. As a result, there are significant restrictions on the functions that can be called. Among the library's functions, only the ones shown below can be called before the static initializer.</p><p><itemizedlist><listitem><para><a href="../nn/init/InitializeAllocator.html">nn::init::InitializeAllocator</a><br /></para></listitem><listitem><para><a href="../nn/os/InitializeDeviceMemory.html">nn::os::InitializeDeviceMemory</a><br /></para></listitem></itemizedlist> Operation is not guaranteed if any other functions are called. Sufficient care should be taken when coding your own version of these operations.</p><!-- write here --></div>
57<h2>Revision History</h2>
58    <div class="section">
59      <dl class="history">
60        <dt>2010/01/07</dt>
61<dd>Initial version.<br />
62        </dd>
63      </dl>
64    </div>
65  <hr><p>CONFIDENTIAL</p></body>
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