class="paramdir">[in]</td><td class="paramname">handler</td><td>interrupt handler function address </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 on success, -1 on error.</dd></dl>
<p>This function registers address of the interrupt handler callback function corresponding to the specified interrupt ID number.</p>
<p>For Arm GIC the default implementation looks like the following example:</p>
<div class="fragment"><div class="line">int32_t <a class="code" href="group__ir