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<h4 class="subsection">G.5.6 <acronym>MIPS</acronym> Features</h4>

<p><a name="index-target-descriptions_002c-_0040acronym_007bMIPS_007d-features-3663"></a>
The &lsquo;<samp><span class="samp">org.gnu.gdb.mips.cpu</span></samp>&rsquo; feature is required for <acronym>MIPS</acronym> targets. 
It should contain registers &lsquo;<samp><span class="samp">r0</span></samp>&rsquo; through &lsquo;<samp><span class="samp">r31</span></samp>&rsquo;, &lsquo;<samp><span class="samp">lo</span></samp>&rsquo;,
&lsquo;<samp><span class="samp">hi</span></samp>&rsquo;, and &lsquo;<samp><span class="samp">pc</span></samp>&rsquo;.  They may be 32-bit or 64-bit depending
on the target.

   <p>The &lsquo;<samp><span class="samp">org.gnu.gdb.mips.cp0</span></samp>&rsquo; feature is also required.  It should
contain at least the &lsquo;<samp><span class="samp">status</span></samp>&rsquo;, &lsquo;<samp><span class="samp">badvaddr</span></samp>&rsquo;, and &lsquo;<samp><span class="samp">cause</span></samp>&rsquo;
registers.  They may be 32-bit or 64-bit depending on the target.

   <p>The &lsquo;<samp><span class="samp">org.gnu.gdb.mips.fpu</span></samp>&rsquo; feature is currently required, though
it may be optional in a future version of <span class="sc">gdb</span>.  It should
contain registers &lsquo;<samp><span class="samp">f0</span></samp>&rsquo; through &lsquo;<samp><span class="samp">f31</span></samp>&rsquo;, &lsquo;<samp><span class="samp">fcsr</span></samp>&rsquo;, and
&lsquo;<samp><span class="samp">fir</span></samp>&rsquo;.  They may be 32-bit or 64-bit depending on the target.

   <p>The &lsquo;<samp><span class="samp">org.gnu.gdb.mips.dsp</span></samp>&rsquo; feature is optional.  It should
contain registers &lsquo;<samp><span class="samp">hi1</span></samp>&rsquo; through &lsquo;<samp><span class="samp">hi3</span></samp>&rsquo;, &lsquo;<samp><span class="samp">lo1</span></samp>&rsquo; through
&lsquo;<samp><span class="samp">lo3</span></samp>&rsquo;, and &lsquo;<samp><span class="samp">dspctl</span></samp>&rsquo;.  The &lsquo;<samp><span class="samp">dspctl</span></samp>&rsquo; register should
be 32-bit and the rest may be 32-bit or 64-bit depending on the target.

   <p>The &lsquo;<samp><span class="samp">org.gnu.gdb.mips.linux</span></samp>&rsquo; feature is optional.  It should
contain a single register, &lsquo;<samp><span class="samp">restart</span></samp>&rsquo;, which is used by the
Linux kernel to control restartable syscalls.

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