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80 lines
3.4 KiB
HTML
80 lines
3.4 KiB
HTML
4 years ago
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<title>M32C Pragmas - Using the GNU Compiler Collection (GCC)</title>
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<meta name="description" content="Using the GNU Compiler Collection (GCC)">
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<link rel="up" href="Pragmas.html#Pragmas" title="Pragmas">
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<link rel="prev" href="ARM-Pragmas.html#ARM-Pragmas" title="ARM Pragmas">
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<link rel="next" href="MeP-Pragmas.html#MeP-Pragmas" title="MeP Pragmas">
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Copyright (C) 1988-2015 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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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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</head>
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<body>
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<div class="node">
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<a name="M32C-Pragmas"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="MeP-Pragmas.html#MeP-Pragmas">MeP Pragmas</a>,
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Previous: <a rel="previous" accesskey="p" href="ARM-Pragmas.html#ARM-Pragmas">ARM Pragmas</a>,
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Up: <a rel="up" accesskey="u" href="Pragmas.html#Pragmas">Pragmas</a>
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<hr>
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</div>
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<h4 class="subsection">6.60.2 M32C Pragmas</h4>
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<dl>
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<dt><code>GCC memregs </code><var>number</var><dd><a name="index-pragma_002c-memregs-4160"></a>Overrides the command-line option <code>-memregs=</code> for the current
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file. Use with care! This pragma must be before any function in the
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file, and mixing different memregs values in different objects may
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make them incompatible. This pragma is useful when a
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performance-critical function uses a memreg for temporary values,
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as it may allow you to reduce the number of memregs used.
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<br><dt><code>ADDRESS </code><var>name</var> <var>address</var><dd><a name="index-pragma_002c-address-4161"></a>For any declared symbols matching <var>name</var>, this does three things
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to that symbol: it forces the symbol to be located at the given
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address (a number), it forces the symbol to be volatile, and it
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changes the symbol's scope to be static. This pragma exists for
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compatibility with other compilers, but note that the common
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<code>1234H</code> numeric syntax is not supported (use <code>0x1234</code>
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instead). Example:
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<pre class="smallexample"> #pragma ADDRESS port3 0x103
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char port3;
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</pre>
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</dl>
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</body></html>
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