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<title>Using the GNU Compiler Collection (GCC): NDS32 Options</title>
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<a name="NDS32-Options"></a>
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<div class="header">
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<p>
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Next: <a href="Nios-II-Options.html#Nios-II-Options" accesskey="n" rel="next">Nios II Options</a>, Previous: <a href="MSP430-Options.html#MSP430-Options" accesskey="p" rel="prev">MSP430 Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="NDS32-Options-1"></a>
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<h4 class="subsection">3.18.31 NDS32 Options</h4>
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<a name="index-NDS32-Options"></a>
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<p>These options are defined for NDS32 implementations:
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</p>
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<dl compact="compact">
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<dt><code>-mbig-endian</code></dt>
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<dd><a name="index-mbig_002dendian-7"></a>
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<p>Generate code in big-endian mode.
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</p>
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</dd>
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<dt><code>-mlittle-endian</code></dt>
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<dd><a name="index-mlittle_002dendian-7"></a>
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<p>Generate code in little-endian mode.
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</p>
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</dd>
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<dt><code>-mreduced-regs</code></dt>
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<dd><a name="index-mreduced_002dregs"></a>
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<p>Use reduced-set registers for register allocation.
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</p>
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</dd>
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<dt><code>-mfull-regs</code></dt>
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<dd><a name="index-mfull_002dregs"></a>
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<p>Use full-set registers for register allocation.
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</p>
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</dd>
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<dt><code>-mcmov</code></dt>
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<dd><a name="index-mcmov"></a>
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<p>Generate conditional move instructions.
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</p>
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</dd>
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<dt><code>-mno-cmov</code></dt>
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<dd><a name="index-mno_002dcmov"></a>
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<p>Do not generate conditional move instructions.
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</p>
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</dd>
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<dt><code>-mperf-ext</code></dt>
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<dd><a name="index-mperf_002dext"></a>
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<p>Generate performance extension instructions.
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</p>
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</dd>
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<dt><code>-mno-perf-ext</code></dt>
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<dd><a name="index-mno_002dperf_002dext"></a>
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<p>Do not generate performance extension instructions.
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</p>
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</dd>
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<dt><code>-mv3push</code></dt>
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<dd><a name="index-mv3push"></a>
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<p>Generate v3 push25/pop25 instructions.
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</p>
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</dd>
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<dt><code>-mno-v3push</code></dt>
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<dd><a name="index-mno_002dv3push"></a>
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<p>Do not generate v3 push25/pop25 instructions.
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</p>
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</dd>
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<dt><code>-m16-bit</code></dt>
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<dd><a name="index-m16_002dbit-1"></a>
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<p>Generate 16-bit instructions.
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</p>
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</dd>
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<dt><code>-mno-16-bit</code></dt>
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<dd><a name="index-mno_002d16_002dbit"></a>
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<p>Do not generate 16-bit instructions.
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</p>
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</dd>
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<dt><code>-misr-vector-size=<var>num</var></code></dt>
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<dd><a name="index-misr_002dvector_002dsize"></a>
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<p>Specify the size of each interrupt vector, which must be 4 or 16.
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</p>
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</dd>
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<dt><code>-mcache-block-size=<var>num</var></code></dt>
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<dd><a name="index-mcache_002dblock_002dsize"></a>
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<p>Specify the size of each cache block,
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which must be a power of 2 between 4 and 512.
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</p>
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</dd>
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<dt><code>-march=<var>arch</var></code></dt>
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<dd><a name="index-march-8"></a>
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<p>Specify the name of the target architecture.
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</p>
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</dd>
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<dt><code>-mcmodel=<var>code-model</var></code></dt>
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<dd><a name="index-mcmodel"></a>
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<p>Set the code model to one of
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</p><dl compact="compact">
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<dt>‘<samp>small</samp>’</dt>
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<dd><p>All the data and read-only data segments must be within 512KB addressing space.
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The text segment must be within 16MB addressing space.
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</p></dd>
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<dt>‘<samp>medium</samp>’</dt>
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<dd><p>The data segment must be within 512KB while the read-only data segment can be
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within 4GB addressing space. The text segment should be still within 16MB
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addressing space.
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</p></dd>
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<dt>‘<samp>large</samp>’</dt>
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<dd><p>All the text and data segments can be within 4GB addressing space.
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</p></dd>
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</dl>
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</dd>
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<dt><code>-mctor-dtor</code></dt>
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<dd><a name="index-mctor_002ddtor"></a>
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<p>Enable constructor/destructor feature.
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</p>
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</dd>
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<dt><code>-mrelax</code></dt>
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<dd><a name="index-mrelax-4"></a>
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<p>Guide linker to relax instructions.
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</p>
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</dd>
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</dl>
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<hr>
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<div class="header">
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<p>
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Next: <a href="Nios-II-Options.html#Nios-II-Options" accesskey="n" rel="next">Nios II Options</a>, Previous: <a href="MSP430-Options.html#MSP430-Options" accesskey="p" rel="prev">MSP430 Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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