69 lines
3.4 KiB
HTML
69 lines
3.4 KiB
HTML
<html lang="en">
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<head>
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<title>R - Using as</title>
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<link rel="up" href="Invoking.html#Invoking" title="Invoking">
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<!--
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This file documents the GNU Assembler "as".
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Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001, 2002,
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2006, 2007 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 1.1
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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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<div class="node">
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<p>
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<a name="R"></a>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><br>
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</div>
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<h3 class="section">2.12 Join Data and Text Sections: <span class="option">-R</span></h3>
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<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
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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 <span class="option">-R</span> 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 <span class="command">as</span>. In future, <span class="option">-R</span> may work this way.
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<p>When <span class="command">as</span> is configured for COFF or ELF output,
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this option is only useful if you use sections named <span class="samp">.text</span> and
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<span class="samp">.data</span>.
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<p><span class="option">-R</span> is not supported for any of the HPPA targets. Using
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<span class="option">-R</span> generates a warning from <span class="command">as</span>.
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</body></html>
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