1<html lang="en"> 2<head> 3<title>Targets - Debugging with GDB</title> 4<meta http-equiv="Content-Type" content="text/html"> 5<meta name="description" content="Debugging with GDB"> 6<meta name="generator" content="makeinfo 4.13"> 7<link title="Top" rel="start" href="index.html#Top"> 8<link rel="prev" href="GDB-Files.html#GDB-Files" title="GDB Files"> 9<link rel="next" href="Remote-Debugging.html#Remote-Debugging" title="Remote Debugging"> 10<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> 11<!-- 12Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 131998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 14Free Software Foundation, Inc. 15 16Permission is granted to copy, distribute and/or modify this document 17under the terms of the GNU Free Documentation License, Version 1.3 or 18any later version published by the Free Software Foundation; with the 19Invariant Sections being ``Free Software'' and ``Free Software Needs 20Free Documentation'', with the Front-Cover Texts being ``A GNU Manual,'' 21and with the Back-Cover Texts as in (a) below. 22 23(a) The FSF's Back-Cover Text is: ``You are free to copy and modify 24this GNU Manual. Buying copies from GNU Press supports the FSF in 25developing GNU and promoting software freedom.''--> 26<meta http-equiv="Content-Style-Type" content="text/css"> 27<style type="text/css"><!-- 28 pre.display { font-family:inherit } 29 pre.format { font-family:inherit } 30 pre.smalldisplay { font-family:inherit; font-size:smaller } 31 pre.smallformat { font-family:inherit; font-size:smaller } 32 pre.smallexample { font-size:smaller } 33 pre.smalllisp { font-size:smaller } 34 span.sc { font-variant:small-caps } 35 span.roman { font-family:serif; font-weight:normal; } 36 span.sansserif { font-family:sans-serif; font-weight:normal; } 37--></style> 38<link rel="stylesheet" type="text/css" href="../cs.css"> 39</head> 40<body> 41<div class="node"> 42<a name="Targets"></a> 43<p> 44Next: <a rel="next" accesskey="n" href="Remote-Debugging.html#Remote-Debugging">Remote Debugging</a>, 45Previous: <a rel="previous" accesskey="p" href="GDB-Files.html#GDB-Files">GDB Files</a>, 46Up: <a rel="up" accesskey="u" href="index.html#Top">Top</a> 47<hr> 48</div> 49 50<h2 class="chapter">19 Specifying a Debugging Target</h2> 51 52<p><a name="index-debugging-target-1030"></a>A <dfn>target</dfn> is the execution environment occupied by your program. 53 54 <p>Often, <span class="sc">gdb</span> runs in the same host environment as your program; 55in that case, the debugging target is specified as a side effect when 56you use the <code>file</code> or <code>core</code> commands. When you need more 57flexibility—for example, running <span class="sc">gdb</span> on a physically separate 58host, or controlling a standalone system over a serial port or a 59realtime system over a TCP/IP connection—you can use the <code>target</code> 60command to specify one of the target types configured for <span class="sc">gdb</span> 61(see <a href="Target-Commands.html#Target-Commands">Commands for Managing Targets</a>). 62 63 <p><a name="index-target-architecture-1031"></a>It is possible to build <span class="sc">gdb</span> for several different <dfn>target 64architectures</dfn>. When <span class="sc">gdb</span> is built like that, you can choose 65one of the available architectures with the <kbd>set architecture</kbd> 66command. 67 68 69<a name="index-set-architecture-1032"></a> 70<a name="index-show-architecture-1033"></a> 71<dl><dt><code>set architecture </code><var>arch</var><dd>This command sets the current target architecture to <var>arch</var>. The 72value of <var>arch</var> can be <code>"auto"</code>, in addition to one of the 73supported architectures. 74 75 <br><dt><code>show architecture</code><dd>Show the current target architecture. 76 77 <br><dt><code>set processor</code><dt><code>processor</code><dd><a name="index-set-processor-1034"></a><a name="index-show-processor-1035"></a>These are alias commands for, respectively, <code>set architecture</code> 78and <code>show architecture</code>. 79</dl> 80 81<ul class="menu"> 82<li><a accesskey="1" href="Active-Targets.html#Active-Targets">Active Targets</a>: Active targets 83<li><a accesskey="2" href="Target-Commands.html#Target-Commands">Target Commands</a>: Commands for managing targets 84<li><a accesskey="3" href="Byte-Order.html#Byte-Order">Byte Order</a>: Choosing target byte order 85</ul> 86 87 </body></html> 88 89