1<html lang="en"> 2<head> 3<title>M32C Pragmas - Using the GNU Compiler Collection (GCC)</title> 4<meta http-equiv="Content-Type" content="text/html"> 5<meta name="description" content="Using the GNU Compiler Collection (GCC)"> 6<meta name="generator" content="makeinfo 4.13"> 7<link title="Top" rel="start" href="index.html#Top"> 8<link rel="up" href="Pragmas.html#Pragmas" title="Pragmas"> 9<link rel="prev" href="ARM-Pragmas.html#ARM-Pragmas" title="ARM Pragmas"> 10<link rel="next" href="MeP-Pragmas.html#MeP-Pragmas" title="MeP Pragmas"> 11<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> 12<!-- 13Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 141998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 152010 Free Software Foundation, Inc. 16 17Permission is granted to copy, distribute and/or modify this document 18under the terms of the GNU Free Documentation License, Version 1.3 or 19any later version published by the Free Software Foundation; with the 20Invariant Sections being ``Funding Free Software'', the Front-Cover 21Texts being (a) (see below), and with the Back-Cover Texts being (b) 22(see below). A copy of the license is included in the section entitled 23``GNU Free Documentation License''. 24 25(a) The FSF's Front-Cover Text is: 26 27 A GNU Manual 28 29(b) The FSF's Back-Cover Text is: 30 31 You have freedom to copy and modify this GNU Manual, like GNU 32 software. Copies published by the Free Software Foundation raise 33 funds for GNU development.--> 34<meta http-equiv="Content-Style-Type" content="text/css"> 35<style type="text/css"><!-- 36 pre.display { font-family:inherit } 37 pre.format { font-family:inherit } 38 pre.smalldisplay { font-family:inherit; font-size:smaller } 39 pre.smallformat { font-family:inherit; font-size:smaller } 40 pre.smallexample { font-size:smaller } 41 pre.smalllisp { font-size:smaller } 42 span.sc { font-variant:small-caps } 43 span.roman { font-family:serif; font-weight:normal; } 44 span.sansserif { font-family:sans-serif; font-weight:normal; } 45--></style> 46<link rel="stylesheet" type="text/css" href="../cs.css"> 47</head> 48<body> 49<div class="node"> 50<a name="M32C-Pragmas"></a> 51<p> 52Next: <a rel="next" accesskey="n" href="MeP-Pragmas.html#MeP-Pragmas">MeP Pragmas</a>, 53Previous: <a rel="previous" accesskey="p" href="ARM-Pragmas.html#ARM-Pragmas">ARM Pragmas</a>, 54Up: <a rel="up" accesskey="u" href="Pragmas.html#Pragmas">Pragmas</a> 55<hr> 56</div> 57 58<h4 class="subsection">6.56.2 M32C Pragmas</h4> 59 60 <dl> 61<dt><code>GCC memregs </code><var>number</var><dd><a name="index-pragma_002c-memregs-3216"></a>Overrides the command-line option <code>-memregs=</code> for the current 62file. Use with care! This pragma must be before any function in the 63file, and mixing different memregs values in different objects may 64make them incompatible. This pragma is useful when a 65performance-critical function uses a memreg for temporary values, 66as it may allow you to reduce the number of memregs used. 67 68 <br><dt><code>ADDRESS </code><var>name</var> <var>address</var><dd><a name="index-pragma_002c-address-3217"></a>For any declared symbols matching <var>name</var>, this does three things 69to that symbol: it forces the symbol to be located at the given 70address (a number), it forces the symbol to be volatile, and it 71changes the symbol's scope to be static. This pragma exists for 72compatibility with other compilers, but note that the common 73<code>1234H</code> numeric syntax is not supported (use <code>0x1234</code> 74instead). Example: 75 76 <pre class="example"> #pragma ADDRESS port3 0x103 77 char port3; 78</pre> 79 </dl> 80 81 </body></html> 82 83