120 lines
5.2 KiB
HTML
120 lines
5.2 KiB
HTML
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<head>
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<title>Using the GNU Compiler Collection (GCC): Other Built-in Functions</title>
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<meta name="description" content="Using the GNU Compiler Collection (GCC): Other Built-in Functions">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="FR_002dV-Built_002din-Functions.html#FR_002dV-Built_002din-Functions" rel="up" title="FR-V Built-in Functions">
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<link href="MIPS-DSP-Built_002din-Functions.html#MIPS-DSP-Built_002din-Functions" rel="next" title="MIPS DSP Built-in Functions">
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<link href="Raw-read_002fwrite-Functions.html#Raw-read_002fwrite-Functions" rel="prev" title="Raw read/write Functions">
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<a name="Other-Built_002din-Functions"></a>
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<p>
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Previous: <a href="Raw-read_002fwrite-Functions.html#Raw-read_002fwrite-Functions" accesskey="p" rel="prev">Raw read/write Functions</a>, Up: <a href="FR_002dV-Built_002din-Functions.html#FR_002dV-Built_002din-Functions" accesskey="u" rel="up">FR-V Built-in Functions</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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<hr>
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<a name="Other-Built_002din-Functions-1"></a>
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<h4 class="subsubsection">6.59.12.5 Other Built-in Functions</h4>
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<p>This section describes built-in functions that are not named after
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a specific FR-V instruction.
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</p>
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<dl compact="compact">
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<dt><code>sw2 __IACCreadll (iacc <var>reg</var>)</code></dt>
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<dd><p>Return the full 64-bit value of IACC0. The <var>reg</var> argument is reserved
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for future expansion and must be 0.
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</p>
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</dd>
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<dt><code>sw1 __IACCreadl (iacc <var>reg</var>)</code></dt>
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<dd><p>Return the value of IACC0H if <var>reg</var> is 0 and IACC0L if <var>reg</var> is 1.
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Other values of <var>reg</var> are rejected as invalid.
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</p>
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</dd>
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<dt><code>void __IACCsetll (iacc <var>reg</var>, sw2 <var>x</var>)</code></dt>
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<dd><p>Set the full 64-bit value of IACC0 to <var>x</var>. The <var>reg</var> argument
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is reserved for future expansion and must be 0.
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</p>
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</dd>
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<dt><code>void __IACCsetl (iacc <var>reg</var>, sw1 <var>x</var>)</code></dt>
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<dd><p>Set IACC0H to <var>x</var> if <var>reg</var> is 0 and IACC0L to <var>x</var> if <var>reg</var>
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is 1. Other values of <var>reg</var> are rejected as invalid.
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</p>
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</dd>
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<dt><code>void __data_prefetch0 (const void *<var>x</var>)</code></dt>
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<dd><p>Use the <code>dcpl</code> instruction to load the contents of address <var>x</var>
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into the data cache.
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</p>
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</dd>
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<dt><code>void __data_prefetch (const void *<var>x</var>)</code></dt>
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<dd><p>Use the <code>nldub</code> instruction to load the contents of address <var>x</var>
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into the data cache. The instruction is issued in slot I1.
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</p></dd>
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</dl>
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</body>
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</html>
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