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| <h4 class="subsection">3.17.1 ARC Options</h4> |
| |
| <p><a name="index-ARC-Options-991"></a> |
| These options are defined for ARC implementations: |
| |
| <dl> |
| <dt><code>-EL</code><dd><a name="index-EL-992"></a>Compile code for little endian mode. This is the default. |
| |
| <br><dt><code>-EB</code><dd><a name="index-EB-993"></a>Compile code for big endian mode. |
| |
| <br><dt><code>-mmangle-cpu</code><dd><a name="index-mmangle_002dcpu-994"></a>Prepend the name of the cpu to all public symbol names. |
| In multiple-processor systems, there are many ARC variants with different |
| instruction and register set characteristics. This flag prevents code |
| compiled for one cpu to be linked with code compiled for another. |
| No facility exists for handling variants that are “almost identical”. |
| This is an all or nothing option. |
| |
| <br><dt><code>-mcpu=</code><var>cpu</var><dd><a name="index-mcpu-995"></a>Compile code for ARC variant <var>cpu</var>. |
| Which variants are supported depend on the configuration. |
| All variants support <samp><span class="option">-mcpu=base</span></samp>, this is the default. |
| |
| <br><dt><code>-mtext=</code><var>text-section</var><dt><code>-mdata=</code><var>data-section</var><dt><code>-mrodata=</code><var>readonly-data-section</var><dd><a name="index-mtext-996"></a><a name="index-mdata-997"></a><a name="index-mrodata-998"></a>Put functions, data, and readonly data in <var>text-section</var>, |
| <var>data-section</var>, and <var>readonly-data-section</var> respectively |
| by default. This can be overridden with the <code>section</code> attribute. |
| See <a href="Variable-Attributes.html#Variable-Attributes">Variable Attributes</a>. |
| |
| <br><dt><code>-mfix-cortex-m3-ldrd</code><dd><a name="index-mfix_002dcortex_002dm3_002dldrd-999"></a>Some Cortex-M3 cores can cause data corruption when <code>ldrd</code> instructions |
| with overlapping destination and base registers are used. This option avoids |
| generating these instructions. This option is enabled by default when |
| <samp><span class="option">-mcpu=cortex-m3</span></samp> is specified. |
| |
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