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<title>Debugging with GDB: MIPS Features</title>

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<a name="MIPS-Features"></a>
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Next: <a href="M68K-Features.html#M68K-Features" accesskey="n" rel="next">M68K Features</a>, Previous: <a href="MicroBlaze-Features.html#MicroBlaze-Features" accesskey="p" rel="prev">MicroBlaze Features</a>, Up: <a href="Standard-Target-Features.html#Standard-Target-Features" accesskey="u" rel="up">Standard Target Features</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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<a name="MIPS-Features-1"></a>
<h4 class="subsection">G.4.5 <acronym>MIPS</acronym> Features</h4>
<a name="index-target-descriptions_002c-MIPS-features"></a>

<p>The &lsquo;<samp>org.gnu.gdb.mips.cpu</samp>&rsquo; feature is required for <acronym>MIPS</acronym> targets.
It should contain registers &lsquo;<samp>r0</samp>&rsquo; through &lsquo;<samp>r31</samp>&rsquo;, &lsquo;<samp>lo</samp>&rsquo;,
&lsquo;<samp>hi</samp>&rsquo;, and &lsquo;<samp>pc</samp>&rsquo;.  They may be 32-bit or 64-bit depending
on the target.
</p>
<p>The &lsquo;<samp>org.gnu.gdb.mips.cp0</samp>&rsquo; feature is also required.  It should
contain at least the &lsquo;<samp>status</samp>&rsquo;, &lsquo;<samp>badvaddr</samp>&rsquo;, and &lsquo;<samp>cause</samp>&rsquo;
registers.  They may be 32-bit or 64-bit depending on the target.
</p>
<p>The &lsquo;<samp>org.gnu.gdb.mips.fpu</samp>&rsquo; feature is currently required, though
it may be optional in a future version of <small>GDB</small>.  It should
contain registers &lsquo;<samp>f0</samp>&rsquo; through &lsquo;<samp>f31</samp>&rsquo;, &lsquo;<samp>fcsr</samp>&rsquo;, and
&lsquo;<samp>fir</samp>&rsquo;.  They may be 32-bit or 64-bit depending on the target.
</p>
<p>The &lsquo;<samp>org.gnu.gdb.mips.dsp</samp>&rsquo; feature is optional.  It should
contain registers &lsquo;<samp>hi1</samp>&rsquo; through &lsquo;<samp>hi3</samp>&rsquo;, &lsquo;<samp>lo1</samp>&rsquo; through
&lsquo;<samp>lo3</samp>&rsquo;, and &lsquo;<samp>dspctl</samp>&rsquo;.  The &lsquo;<samp>dspctl</samp>&rsquo; register should
be 32-bit and the rest may be 32-bit or 64-bit depending on the target.
</p>
<p>The &lsquo;<samp>org.gnu.gdb.mips.linux</samp>&rsquo; feature is optional.  It should
contain a single register, &lsquo;<samp>restart</samp>&rsquo;, which is used by the
Linux kernel to control restartable syscalls.
</p>


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