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<title>Debugging with GDB: NDS32 Features</title>

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<a name="NDS32-Features"></a>
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<p>
Next: <a href="Nios-II-Features.html#Nios-II-Features" accesskey="n" rel="next">Nios II Features</a>, Previous: <a href="M68K-Features.html#M68K-Features" accesskey="p" rel="previous">M68K 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="NDS32-Features-1"></a>
<h4 class="subsection">G.5.8 NDS32 Features</h4>
<a name="index-target-descriptions_002c-NDS32-features"></a>

<p>The &lsquo;<samp>org.gnu.gdb.nds32.core</samp>&rsquo; feature is required for NDS32
targets.  It should contain at least registers &lsquo;<samp>r0</samp>&rsquo; through
&lsquo;<samp>r10</samp>&rsquo;, &lsquo;<samp>r15</samp>&rsquo;, &lsquo;<samp>fp</samp>&rsquo;, &lsquo;<samp>gp</samp>&rsquo;, &lsquo;<samp>lp</samp>&rsquo;, &lsquo;<samp>sp</samp>&rsquo;,
and &lsquo;<samp>pc</samp>&rsquo;.
</p>
<p>The &lsquo;<samp>org.gnu.gdb.nds32.fpu</samp>&rsquo; feature is optional.  If present,
it should contain 64-bit double-precision floating-point registers
&lsquo;<samp>fd0</samp>&rsquo; through <em>fdN</em>, which should be &lsquo;<samp>fd3</samp>&rsquo;, &lsquo;<samp>fd7</samp>&rsquo;,
&lsquo;<samp>fd15</samp>&rsquo;, or &lsquo;<samp>fd31</samp>&rsquo; based on the FPU configuration implemented.
</p>
<p><em>Note:</em> The first sixteen 64-bit double-precision floating-point
registers are overlapped with the thirty-two 32-bit single-precision
floating-point registers.  The 32-bit single-precision registers, if
not being listed explicitly, will be synthesized from halves of the
overlapping 64-bit double-precision registers.  Listing 32-bit
single-precision registers explicitly is deprecated, and the
support to it could be totally removed some day.
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