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<h5 class="subsubsection">6.52.5.4 Raw read/write Functions</h5>

<p>This sections describes built-in functions related to read and write
instructions to access memory.  These functions generate
<code>membar</code> instructions to flush the I/O load and stores where
appropriate, as described in Fujitsu's manual described above.

     <dl>
<dt><code>unsigned char __builtin_read8 (void *</code><var>data</var><code>)</code><br><dt><code>unsigned short __builtin_read16 (void *</code><var>data</var><code>)</code><br><dt><code>unsigned long __builtin_read32 (void *</code><var>data</var><code>)</code><br><dt><code>unsigned long long __builtin_read64 (void *</code><var>data</var><code>)</code>
<br><dt><code>void __builtin_write8 (void *</code><var>data</var><code>, unsigned char </code><var>datum</var><code>)</code><br><dt><code>void __builtin_write16 (void *</code><var>data</var><code>, unsigned short </code><var>datum</var><code>)</code><br><dt><code>void __builtin_write32 (void *</code><var>data</var><code>, unsigned long </code><var>datum</var><code>)</code><br><dt><code>void __builtin_write64 (void *</code><var>data</var><code>, unsigned long long </code><var>datum</var><code>)</code><dd></dl>

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