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100 lines
4.8 KiB
HTML
100 lines
4.8 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1988-2018 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Funding Free Software", the Front-Cover
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Texts being (a) (see below), and with the Back-Cover Texts being (b)
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(see below). A copy of the license is included in the section entitled
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"GNU Free Documentation License".
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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(b) The FSF's Back-Cover Text is:
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You have freedom to copy and modify this GNU Manual, like GNU
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software. Copies published by the Free Software Foundation raise
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funds for GNU development. -->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Raw read/write Functions (Using the GNU Compiler Collection (GCC))</title>
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<meta name="description" content="Raw read/write Functions (Using the GNU Compiler Collection (GCC))">
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<meta name="keywords" content="Raw read/write Functions (Using the GNU Compiler Collection (GCC))">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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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="Other-Built_002din-Functions.html#Other-Built_002din-Functions" rel="next" title="Other Built-in Functions">
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<link href="Directly_002dmapped-Media-Functions.html#Directly_002dmapped-Media-Functions" rel="prev" title="Directly-mapped Media Functions">
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</style>
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</head>
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<body lang="en">
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<a name="Raw-read_002fwrite-Functions"></a>
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<div class="header">
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<p>
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Next: <a href="Other-Built_002din-Functions.html#Other-Built_002din-Functions" accesskey="n" rel="next">Other Built-in Functions</a>, Previous: <a href="Directly_002dmapped-Media-Functions.html#Directly_002dmapped-Media-Functions" accesskey="p" rel="prev">Directly-mapped Media 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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</div>
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<hr>
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<a name="Raw-Read_002fWrite-Functions"></a>
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<h4 class="subsubsection">6.59.12.4 Raw Read/Write Functions</h4>
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<p>This sections describes built-in functions related to read and write
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instructions to access memory. These functions generate
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<code>membar</code> instructions to flush the I/O load and stores where
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appropriate, as described in Fujitsu’s manual described above.
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</p>
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<dl compact="compact">
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<dt><code>unsigned char __builtin_read8 (void *<var>data</var>)</code></dt>
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<dt><code>unsigned short __builtin_read16 (void *<var>data</var>)</code></dt>
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<dt><code>unsigned long __builtin_read32 (void *<var>data</var>)</code></dt>
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<dt><code>unsigned long long __builtin_read64 (void *<var>data</var>)</code></dt>
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<dt><code>void __builtin_write8 (void *<var>data</var>, unsigned char <var>datum</var>)</code></dt>
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<dt><code>void __builtin_write16 (void *<var>data</var>, unsigned short <var>datum</var>)</code></dt>
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<dt><code>void __builtin_write32 (void *<var>data</var>, unsigned long <var>datum</var>)</code></dt>
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<dt><code>void __builtin_write64 (void *<var>data</var>, unsigned long long <var>datum</var>)</code></dt>
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</dl>
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</body>
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</html>
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