127 lines
5.9 KiB
HTML
127 lines
5.9 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- This file documents the GNU linker LD
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(Linaro_Binutils-2017.02)
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version 2.27.0.
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Copyright (C) 1991-2016 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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<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>LD: i960</title>
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<meta name="description" content="LD: i960">
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<meta name="keywords" content="LD: i960">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="LD-Index.html#LD-Index" rel="index" title="LD Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Machine-Dependent.html#Machine-Dependent" rel="up" title="Machine Dependent">
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<link href="M68HC11_002f68HC12.html#M68HC11_002f68HC12" rel="next" title="M68HC11/68HC12">
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<link href="H8_002f300.html#H8_002f300" rel="prev" title="H8/300">
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<style type="text/css">
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<!--
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a.summary-letter {text-decoration: none}
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blockquote.smallquotation {font-size: smaller}
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div.display {margin-left: 3.2em}
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div.example {margin-left: 3.2em}
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div.indentedblock {margin-left: 3.2em}
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div.lisp {margin-left: 3.2em}
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div.smalldisplay {margin-left: 3.2em}
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div.smallexample {margin-left: 3.2em}
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div.smallindentedblock {margin-left: 3.2em; font-size: smaller}
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div.smalllisp {margin-left: 3.2em}
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kbd {font-style:oblique}
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pre.display {font-family: inherit}
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pre.format {font-family: inherit}
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pre.menu-comment {font-family: serif}
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pre.menu-preformatted {font-family: serif}
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pre.smalldisplay {font-family: inherit; font-size: smaller}
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pre.smallexample {font-size: smaller}
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pre.smallformat {font-family: inherit; font-size: smaller}
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pre.smalllisp {font-size: smaller}
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span.nocodebreak {white-space:nowrap}
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span.nolinebreak {white-space:nowrap}
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span.roman {font-family:serif; font-weight:normal}
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span.sansserif {font-family:sans-serif; font-weight:normal}
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ul.no-bullet {list-style: none}
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-->
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</style>
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</head>
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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="i960"></a>
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<div class="header">
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<p>
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Next: <a href="M68HC11_002f68HC12.html#M68HC11_002f68HC12" accesskey="n" rel="next">M68HC11/68HC12</a>, Previous: <a href="H8_002f300.html#H8_002f300" accesskey="p" rel="prev">H8/300</a>, Up: <a href="Machine-Dependent.html#Machine-Dependent" accesskey="u" rel="up">Machine Dependent</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="LD-Index.html#LD-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="ld-and-the-Intel-960-Family"></a>
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<h3 class="section">4.2 <code>ld</code> and the Intel 960 Family</h3>
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<a name="index-i960-support"></a>
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<p>You can use the ‘<samp>-A<var>architecture</var></samp>’ command line option to
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specify one of the two-letter names identifying members of the 960
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family; the option specifies the desired output target, and warns of any
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incompatible instructions in the input files. It also modifies the
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linker’s search strategy for archive libraries, to support the use of
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libraries specific to each particular architecture, by including in the
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search loop names suffixed with the string identifying the architecture.
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</p>
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<p>For example, if your <code>ld</code> command line included ‘<samp><span class="nolinebreak">-ACA</span></samp>’<!-- /@w --> as
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well as ‘<samp><span class="nolinebreak">-ltry</span></samp>’<!-- /@w -->, the linker would look (in its built-in search
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paths, and in any paths you specify with ‘<samp>-L</samp>’) for a library with
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the names
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</p>
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<div class="smallexample">
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<pre class="smallexample">try
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libtry.a
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tryca
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libtryca.a
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</pre></div>
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<p>The first two possibilities would be considered in any event; the last
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two are due to the use of ‘<samp><span class="nolinebreak">-ACA</span></samp>’<!-- /@w -->.
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</p>
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<p>You can meaningfully use ‘<samp>-A</samp>’ more than once on a command line, since
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the 960 architecture family allows combination of target architectures; each
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use will add another pair of name variants to search for when ‘<samp><span class="nolinebreak">-l</span></samp>’<!-- /@w -->
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specifies a library.
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</p>
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<a name="index-_002d_002drelax-on-i960"></a>
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<a name="index-relaxing-on-i960"></a>
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<p><code>ld</code> supports the ‘<samp>--relax</samp>’ option for the i960 family. If
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you specify ‘<samp>--relax</samp>’, <code>ld</code> finds all <code>balx</code> and
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<code>calx</code> instructions whose targets are within 24 bits, and turns
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them into 24-bit program-counter relative <code>bal</code> and <code>cal</code>
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instructions, respectively. <code>ld</code> also turns <code>cal</code>
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instructions into <code>bal</code> instructions when it determines that the
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target subroutine is a leaf routine (that is, the target subroutine does
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not itself call any subroutines).
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</p>
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<hr>
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<div class="header">
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<p>
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Next: <a href="M68HC11_002f68HC12.html#M68HC11_002f68HC12" accesskey="n" rel="next">M68HC11/68HC12</a>, Previous: <a href="H8_002f300.html#H8_002f300" accesskey="p" rel="prev">H8/300</a>, Up: <a href="Machine-Dependent.html#Machine-Dependent" accesskey="u" rel="up">Machine Dependent</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="LD-Index.html#LD-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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</body>
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</html>
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