<html lang="en"> <head> <title>R - Using as</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="Using as"> <meta name="generator" content="makeinfo 4.7"> <link title="Top" rel="start" href="index.html#Top"> <link rel="up" href="Invoking.html#Invoking" title="Invoking"> <link rel="prev" href="o.html#o" title="o"> <link rel="next" href="statistics.html#statistics" title="statistics"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <!-- This file documents the GNU Assembler "as". Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001, 2002, 2006, 2007 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is included in the section entitled ``GNU Free Documentation License''. man end--> <meta http-equiv="Content-Style-Type" content="text/css"> <style type="text/css"><!-- pre.display { font-family:inherit } pre.format { font-family:inherit } pre.smalldisplay { font-family:inherit; font-size:smaller } pre.smallformat { font-family:inherit; font-size:smaller } pre.smallexample { font-size:smaller } pre.smalllisp { font-size:smaller } span.sc { font-variant:small-caps } span.roman { font-family: serif; font-weight: normal; } --></style> </head> <body> <div class="node"> <p> <a name="R"></a>Next: <a rel="next" accesskey="n" href="statistics.html#statistics">statistics</a>, Previous: <a rel="previous" accesskey="p" href="o.html#o">o</a>, Up: <a rel="up" accesskey="u" href="Invoking.html#Invoking">Invoking</a> <hr><br> </div> <h3 class="section">2.12 Join Data and Text Sections: <span class="option">-R</span></h3> <p><a name="index-_002dR-87"></a><a name="index-data-and-text-sections_002c-joining-88"></a><a name="index-text-and-data-sections_002c-joining-89"></a><a name="index-joining-text-and-data-sections-90"></a><a name="index-merging-text-and-data-sections-91"></a><span class="option">-R</span> tells <span class="command">as</span> to write the object file as if all data-section data lives in the text section. This is only done at the very last moment: your binary data are the same, but data section parts are relocated differently. The data section part of your object file is zero bytes long because all its bytes are appended to the text section. (See <a href="Sections.html#Sections">Sections and Relocation</a>.) <p>When you specify <span class="option">-R</span> it would be possible to generate shorter address displacements (because we do not have to cross between text and data section). We refrain from doing this simply for compatibility with older versions of <span class="command">as</span>. In future, <span class="option">-R</span> may work this way. <p>When <span class="command">as</span> is configured for COFF or ELF output, this option is only useful if you use sections named <span class="samp">.text</span> and <span class="samp">.data</span>. <p><span class="option">-R</span> is not supported for any of the HPPA targets. Using <span class="option">-R</span> generates a warning from <span class="command">as</span>. </body></html>