ted Mode Exceptions</h2>
<table class="exception-table">
<tr>
<td>#GP(0)</td>
<td>
<p>If the current privilege level is not 0.</p>
<p>If an invalid XCR is specified in ECX.</p>
<p>If the value in EDX:EAX sets bits that are reserved in the XCR specified by ECX.</p>
<p>If an attempt is made to clear bit 0 of XCR0.</p>
<p>If an attempt is made to set XCR0[2:1] to 10b.</p></td></tr>
<tr>
<td>#UD</td>
<td>
<p>If CPUID.01H:ECX.XSAVE[bit 26] = 0.</p>
<p>If CR4.OSXSAVE[bit 18] = 0.</p>
<p>If the LOCK prefix is used