1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<!-- This file documents the GNU linker LD 4(GNU Toolchain for the A-profile Architecture 10.3-2021.07 (arm-10.29)) 5version 2.36.1. 6 7Copyright (C) 1991-2021 Free Software Foundation, Inc. 8 9Permission is granted to copy, distribute and/or modify this document 10under the terms of the GNU Free Documentation License, Version 1.3 11or any later version published by the Free Software Foundation; 12with no Invariant Sections, with no Front-Cover Texts, and with no 13Back-Cover Texts. A copy of the license is included in the 14section entitled "GNU Free Documentation License". --> 15<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> 16<head> 17<title>LD: Input Section Example</title> 18 19<meta name="description" content="LD: Input Section Example"> 20<meta name="keywords" content="LD: Input Section Example"> 21<meta name="resource-type" content="document"> 22<meta name="distribution" content="global"> 23<meta name="Generator" content="makeinfo"> 24<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 25<link href="index.html#Top" rel="start" title="Top"> 26<link href="LD-Index.html#LD-Index" rel="index" title="LD Index"> 27<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> 28<link href="Input-Section.html#Input-Section" rel="up" title="Input Section"> 29<link href="Output-Section-Data.html#Output-Section-Data" rel="next" title="Output Section Data"> 30<link href="Input-Section-Keep.html#Input-Section-Keep" rel="previous" title="Input Section Keep"> 31<style type="text/css"> 32<!-- 33a.summary-letter {text-decoration: none} 34blockquote.smallquotation {font-size: smaller} 35div.display {margin-left: 3.2em} 36div.example {margin-left: 3.2em} 37div.indentedblock {margin-left: 3.2em} 38div.lisp {margin-left: 3.2em} 39div.smalldisplay {margin-left: 3.2em} 40div.smallexample {margin-left: 3.2em} 41div.smallindentedblock {margin-left: 3.2em; font-size: smaller} 42div.smalllisp {margin-left: 3.2em} 43kbd {font-style:oblique} 44pre.display {font-family: inherit} 45pre.format {font-family: inherit} 46pre.menu-comment {font-family: serif} 47pre.menu-preformatted {font-family: serif} 48pre.smalldisplay {font-family: inherit; font-size: smaller} 49pre.smallexample {font-size: smaller} 50pre.smallformat {font-family: inherit; font-size: smaller} 51pre.smalllisp {font-size: smaller} 52span.nocodebreak {white-space:nowrap} 53span.nolinebreak {white-space:nowrap} 54span.roman {font-family:serif; font-weight:normal} 55span.sansserif {font-family:sans-serif; font-weight:normal} 56ul.no-bullet {list-style: none} 57--> 58</style> 59 60 61</head> 62 63<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> 64<a name="Input-Section-Example"></a> 65<div class="header"> 66<p> 67Previous: <a href="Input-Section-Keep.html#Input-Section-Keep" accesskey="p" rel="previous">Input Section Keep</a>, Up: <a href="Input-Section.html#Input-Section" accesskey="u" rel="up">Input Section</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> 68</div> 69<hr> 70<a name="Input-Section-Example-1"></a> 71<h4 class="subsubsection">3.6.4.5 Input Section Example</h4> 72<p>The following example is a complete linker script. It tells the linker 73to read all of the sections from file <samp>all.o</samp> and place them at the 74start of output section ‘<samp>outputa</samp>’ which starts at location 75‘<samp>0x10000</samp>’. All of section ‘<samp>.input1</samp>’ from file <samp>foo.o</samp> 76follows immediately, in the same output section. All of section 77‘<samp>.input2</samp>’ from <samp>foo.o</samp> goes into output section 78‘<samp>outputb</samp>’, followed by section ‘<samp>.input1</samp>’ from <samp>foo1.o</samp>. 79All of the remaining ‘<samp>.input1</samp>’ and ‘<samp>.input2</samp>’ sections from any 80files are written to output section ‘<samp>outputc</samp>’. 81</p> 82<div class="smallexample"> 83<pre class="smallexample">SECTIONS { 84 outputa 0x10000 : 85 { 86 all.o 87 foo.o (.input1) 88 } 89</pre><pre class="smallexample"> outputb : 90 { 91 foo.o (.input2) 92 foo1.o (.input1) 93 } 94</pre><pre class="smallexample"> outputc : 95 { 96 *(.input1) 97 *(.input2) 98 } 99} 100</pre></div> 101 102<p>If an output section’s name is the same as the input section’s name 103and is representable as a C identifier, then the linker will 104automatically see <a href="PROVIDE.html#PROVIDE">PROVIDE</a> two symbols: __start_SECNAME and 105__stop_SECNAME, where SECNAME is the name of the section. These 106indicate the start address and end address of the output section 107respectively. Note: most section names are not representable as 108C identifiers because they contain a ‘<samp>.</samp>’ character. 109</p> 110 111 112 113</body> 114</html> 115