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<h4 class="subsection">21.3.5 <acronym>MIPS</acronym> Embedded</h4>

<p class="noindent"><span class="sc">gdb</span> supports these special commands for <acronym>MIPS</acronym> targets:

     <dl>
<dt><code>set mipsfpu double</code><dt><code>set mipsfpu single</code><dt><code>set mipsfpu none</code><dt><code>set mipsfpu auto</code><dt><code>show mipsfpu</code><dd><a name="index-set-mipsfpu-1583"></a><a name="index-show-mipsfpu-1584"></a><a name="index-g_t_0040acronym_007bMIPS_007d-remote-floating-point-1585"></a><a name="index-floating-point_002c-_0040acronym_007bMIPS_007d-remote-1586"></a>If your target board does not support the <acronym>MIPS</acronym> floating point
coprocessor, you should use the command &lsquo;<samp><span class="samp">set mipsfpu none</span></samp>&rsquo; (if you
need this, you may wish to put the command in your <span class="sc">gdb</span> init
file).  This tells <span class="sc">gdb</span> how to find the return value of
functions which return floating point values.  It also allows
<span class="sc">gdb</span> to avoid saving the floating point registers when calling
functions on the board.  If you are using a floating point coprocessor
with only single precision floating point support, as on the <span class="sc">r4650</span>
processor, use the command &lsquo;<samp><span class="samp">set mipsfpu single</span></samp>&rsquo;.  The default
double precision floating point coprocessor may be selected using
&lsquo;<samp><span class="samp">set mipsfpu double</span></samp>&rsquo;.

     <p>In previous versions the only choices were double precision or no
floating point, so &lsquo;<samp><span class="samp">set mipsfpu on</span></samp>&rsquo; will select double precision
and &lsquo;<samp><span class="samp">set mipsfpu off</span></samp>&rsquo; will select no floating point.

     <p>As usual, you can inquire about the <code>mipsfpu</code> variable with
&lsquo;<samp><span class="samp">show mipsfpu</span></samp>&rsquo;. 
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