blob: 50bc737bbd3c8d4ae2bd7f7e924e900b7df47590 [file] [log] [blame]
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<!-- This file documents the GNU linker LD
(Linaro GDB 2015.08)
version 2.25.51.
Copyright (C) 1991-2015 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 1.3
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". -->
<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
<head>
<title>LD: i960</title>
<meta name="description" content="LD: i960">
<meta name="keywords" content="LD: i960">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<link href="index.html#Top" rel="start" title="Top">
<link href="LD-Index.html#LD-Index" rel="index" title="LD Index">
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
<link href="Machine-Dependent.html#Machine-Dependent" rel="up" title="Machine Dependent">
<link href="M68HC11_002f68HC12.html#M68HC11_002f68HC12" rel="next" title="M68HC11/68HC12">
<link href="H8_002f300.html#H8_002f300" rel="prev" title="H8/300">
<style type="text/css">
<!--
a.summary-letter {text-decoration: none}
blockquote.smallquotation {font-size: smaller}
div.display {margin-left: 3.2em}
div.example {margin-left: 3.2em}
div.indentedblock {margin-left: 3.2em}
div.lisp {margin-left: 3.2em}
div.smalldisplay {margin-left: 3.2em}
div.smallexample {margin-left: 3.2em}
div.smallindentedblock {margin-left: 3.2em; font-size: smaller}
div.smalllisp {margin-left: 3.2em}
kbd {font-style:oblique}
pre.display {font-family: inherit}
pre.format {font-family: inherit}
pre.menu-comment {font-family: serif}
pre.menu-preformatted {font-family: serif}
pre.smalldisplay {font-family: inherit; font-size: smaller}
pre.smallexample {font-size: smaller}
pre.smallformat {font-family: inherit; font-size: smaller}
pre.smalllisp {font-size: smaller}
span.nocodebreak {white-space:nowrap}
span.nolinebreak {white-space:nowrap}
span.roman {font-family:serif; font-weight:normal}
span.sansserif {font-family:sans-serif; font-weight:normal}
ul.no-bullet {list-style: none}
-->
</style>
</head>
<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
<a name="i960"></a>
<div class="header">
<p>
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> &nbsp; [<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>
</div>
<hr>
<a name="ld-and-the-Intel-960-Family"></a>
<h3 class="section">4.2 <code>ld</code> and the Intel 960 Family</h3>
<a name="index-i960-support"></a>
<p>You can use the &lsquo;<samp>-A<var>architecture</var></samp>&rsquo; command line option to
specify one of the two-letter names identifying members of the 960
family; the option specifies the desired output target, and warns of any
incompatible instructions in the input files. It also modifies the
linker&rsquo;s search strategy for archive libraries, to support the use of
libraries specific to each particular architecture, by including in the
search loop names suffixed with the string identifying the architecture.
</p>
<p>For example, if your <code>ld</code> command line included &lsquo;<samp><span class="nolinebreak">-ACA</span></samp>&rsquo;<!-- /@w --> as
well as &lsquo;<samp><span class="nolinebreak">-ltry</span></samp>&rsquo;<!-- /@w -->, the linker would look (in its built-in search
paths, and in any paths you specify with &lsquo;<samp>-L</samp>&rsquo;) for a library with
the names
</p>
<div class="smallexample">
<pre class="smallexample">try
libtry.a
tryca
libtryca.a
</pre></div>
<p>The first two possibilities would be considered in any event; the last
two are due to the use of &lsquo;<samp><span class="nolinebreak">-ACA</span></samp>&rsquo;<!-- /@w -->.
</p>
<p>You can meaningfully use &lsquo;<samp>-A</samp>&rsquo; more than once on a command line, since
the 960 architecture family allows combination of target architectures; each
use will add another pair of name variants to search for when &lsquo;<samp><span class="nolinebreak">-l</span></samp>&rsquo;<!-- /@w -->
specifies a library.
</p>
<a name="index-_002d_002drelax-on-i960"></a>
<a name="index-relaxing-on-i960"></a>
<p><code>ld</code> supports the &lsquo;<samp>--relax</samp>&rsquo; option for the i960 family. If
you specify &lsquo;<samp>--relax</samp>&rsquo;, <code>ld</code> finds all <code>balx</code> and
<code>calx</code> instructions whose targets are within 24 bits, and turns
them into 24-bit program-counter relative <code>bal</code> and <code>cal</code>
instructions, respectively. <code>ld</code> also turns <code>cal</code>
instructions into <code>bal</code> instructions when it determines that the
target subroutine is a leaf routine (that is, the target subroutine does
not itself call any subroutines).
</p>
<hr>
<div class="header">
<p>
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> &nbsp; [<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>
</div>
</body>
</html>