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Next: <a rel="next" accesskey="n" href="CRIS-Options.html#CRIS-Options">CRIS Options</a>,
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Previous: <a rel="previous" accesskey="p" href="Blackfin-Options.html#Blackfin-Options">Blackfin Options</a>,
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<h4 class="subsection">3.17.7 C6X Options</h4>
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<p><a name="index-C6X-Options-1483"></a>
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<dl>
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<dt><code>-march=</code><var>name</var><dd><a name="index-march-1484"></a>This specifies the name of the target architecture. GCC uses this
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name to determine what kind of instructions it can emit when generating
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assembly code. Permissible names are: ‘<samp><span class="samp">c62x</span></samp>’,
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‘<samp><span class="samp">c64x</span></samp>’, ‘<samp><span class="samp">c64x+</span></samp>’, ‘<samp><span class="samp">c67x</span></samp>’, ‘<samp><span class="samp">c67x+</span></samp>’, ‘<samp><span class="samp">c674x</span></samp>’.
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<br><dt><code>-mbig-endian</code><dd><a name="index-mbig_002dendian-1485"></a>Generate code for a big-endian target.
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<br><dt><code>-mlittle-endian</code><dd><a name="index-mlittle_002dendian-1486"></a>Generate code for a little-endian target. This is the default.
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<br><dt><code>-msim</code><dd><a name="index-msim-1487"></a>Choose startup files and linker script suitable for the simulator.
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<br><dt><code>-msdata=default</code><dd><a name="index-msdata_003ddefault-1488"></a>Put small global and static data in the <code>.neardata</code> section,
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which is pointed to by register <code>B14</code>. Put small uninitialized
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global and static data in the <code>.bss</code> section, which is adjacent
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to the <code>.neardata</code> section. Put small read-only data into the
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<code>.rodata</code> section. The corresponding sections used for large
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pieces of data are <code>.fardata</code>, <code>.far</code> and <code>.const</code>.
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<br><dt><code>-msdata=all</code><dd><a name="index-msdata_003dall-1489"></a>Put all data, not just small objects, into the sections reserved for
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small data, and use addressing relative to the <code>B14</code> register to
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access them.
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<br><dt><code>-msdata=none</code><dd><a name="index-msdata_003dnone-1490"></a>Make no use of the sections reserved for small data, and use absolute
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addresses to access all data. Put all initialized global and static
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data in the <code>.fardata</code> section, and all uninitialized data in the
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<code>.far</code> section. Put all constant data into the <code>.const</code>
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section.
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</dl>
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