1<html lang="en"> 2<head> 3<title>MCore Options - 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="Submodel-Options.html#Submodel-Options" title="Submodel Options"> 9<link rel="prev" href="M68hc1x-Options.html#M68hc1x-Options" title="M68hc1x Options"> 10<link rel="next" href="MeP-Options.html#MeP-Options" title="MeP Options"> 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). 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(Enabled by default). 69 70 <br><dt><code>-mrelax-immediate</code><dt><code>-mno-relax-immediate</code><dd><a name="index-mrelax_002dimmediate-1563"></a><a name="index-mno_002drelax_002dimmediate-1564"></a>Allow arbitrary sized immediates in bit operations. 71 72 <br><dt><code>-mwide-bitfields</code><dt><code>-mno-wide-bitfields</code><dd><a name="index-mwide_002dbitfields-1565"></a><a name="index-mno_002dwide_002dbitfields-1566"></a>Always treat bit-fields as int-sized. 73 74 <br><dt><code>-m4byte-functions</code><dt><code>-mno-4byte-functions</code><dd><a name="index-m4byte_002dfunctions-1567"></a><a name="index-mno_002d4byte_002dfunctions-1568"></a>Force all functions to be aligned to a four byte boundary. 75 76 <br><dt><code>-mcallgraph-data</code><dt><code>-mno-callgraph-data</code><dd><a name="index-mcallgraph_002ddata-1569"></a><a name="index-mno_002dcallgraph_002ddata-1570"></a>Emit callgraph information. 77 78 <br><dt><code>-mslow-bytes</code><dt><code>-mno-slow-bytes</code><dd><a name="index-mslow_002dbytes-1571"></a><a name="index-mno_002dslow_002dbytes-1572"></a>Prefer word access when reading byte quantities. 79 80 <br><dt><code>-mlittle-endian</code><dt><code>-mbig-endian</code><dd><a name="index-mlittle_002dendian-1573"></a><a name="index-mbig_002dendian-1574"></a>Generate code for a little endian target. 81 82 <br><dt><code>-m210</code><dt><code>-m340</code><dd><a name="index-m210-1575"></a><a name="index-m340-1576"></a>Generate code for the 210 processor. 83 84 <br><dt><code>-mno-lsim</code><dd><a name="index-mno_002dlsim-1577"></a>Assume that run-time support has been provided and so omit the 85simulator library (<samp><span class="file">libsim.a)</span></samp> from the linker command line. 86 87 <br><dt><code>-mstack-increment=</code><var>size</var><dd><a name="index-mstack_002dincrement-1578"></a>Set the maximum amount for a single stack increment operation. Large 88values can increase the speed of programs which contain functions 89that need a large amount of stack space, but they can also trigger a 90segmentation fault if the stack is extended too much. The default 91value is 0x1000. 92 93 </dl> 94 95 </body></html> 96 97