71 lines
3.5 KiB
HTML
71 lines
3.5 KiB
HTML
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<html lang="en">
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<head>
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<title>R - Using as</title>
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<meta http-equiv="Content-Type" content="text/html">
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<meta name="description" content="Using as">
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<meta name="generator" content="makeinfo 4.13">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="Invoking.html#Invoking" title="Invoking">
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<link rel="prev" href="o.html#o" title="o">
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<link rel="next" href="statistics.html#statistics" title="statistics">
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<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
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<!--
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This file documents the GNU Assembler "as".
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Copyright (C) 1991-2019 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
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or any later version published by the Free Software Foundation;
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with no Invariant Sections, with no Front-Cover Texts, and with no
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Back-Cover Texts. A copy of the license is included in the
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section entitled ``GNU Free Documentation License''.
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-->
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<meta http-equiv="Content-Style-Type" content="text/css">
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<style type="text/css"><!--
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pre.display { font-family:inherit }
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span.sansserif { font-family:sans-serif; font-weight:normal; }
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--></style>
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</head>
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<body>
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<div class="node">
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<a name="R"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="statistics.html#statistics">statistics</a>,
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Previous: <a rel="previous" accesskey="p" href="o.html#o">o</a>,
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Up: <a rel="up" accesskey="u" href="Invoking.html#Invoking">Invoking</a>
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<hr>
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</div>
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<h3 class="section">2.13 Join Data and Text Sections: <samp><span class="option">-R</span></samp></h3>
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<p><a name="index-g_t_002dR-89"></a><a name="index-data-and-text-sections_002c-joining-90"></a><a name="index-text-and-data-sections_002c-joining-91"></a><a name="index-joining-text-and-data-sections-92"></a><a name="index-merging-text-and-data-sections-93"></a><samp><span class="option">-R</span></samp> tells <samp><span class="command">as</span></samp> to write the object file as if all
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data-section data lives in the text section. This is only done at
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the very last moment: your binary data are the same, but data
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section parts are relocated differently. The data section part of
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your object file is zero bytes long because all its bytes are
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appended to the text section. (See <a href="Sections.html#Sections">Sections and Relocation</a>.)
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<p>When you specify <samp><span class="option">-R</span></samp> it would be possible to generate shorter
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address displacements (because we do not have to cross between text and
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data section). We refrain from doing this simply for compatibility with
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older versions of <samp><span class="command">as</span></samp>. In future, <samp><span class="option">-R</span></samp> may work this way.
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<p>When <samp><span class="command">as</span></samp> is configured for COFF or ELF output,
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this option is only useful if you use sections named ‘<samp><span class="samp">.text</span></samp>’ and
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‘<samp><span class="samp">.data</span></samp>’.
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<p><samp><span class="option">-R</span></samp> is not supported for any of the HPPA targets. Using
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<samp><span class="option">-R</span></samp> generates a warning from <samp><span class="command">as</span></samp>.
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</body></html>
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