| <html lang="en"> |
| <head> |
| <title>Dump/Restore Files - Debugging with GDB</title> |
| <meta http-equiv="Content-Type" content="text/html"> |
| <meta name="description" content="Debugging with GDB"> |
| <meta name="generator" content="makeinfo 4.13"> |
| <link title="Top" rel="start" href="index.html#Top"> |
| <link rel="up" href="Data.html#Data" title="Data"> |
| <link rel="prev" href="Memory-Region-Attributes.html#Memory-Region-Attributes" title="Memory Region Attributes"> |
| <link rel="next" href="Core-File-Generation.html#Core-File-Generation" title="Core File Generation"> |
| <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> |
| <!-- |
| Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
| 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| 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 the |
| Invariant Sections being ``Free Software'' and ``Free Software Needs |
| Free Documentation'', with the Front-Cover Texts being ``A GNU Manual,'' |
| and with the Back-Cover Texts as in (a) below. |
| |
| (a) The FSF's Back-Cover Text is: ``You are free to copy and modify |
| this GNU Manual. Buying copies from GNU Press supports the FSF in |
| developing GNU and promoting software freedom.''--> |
| <meta http-equiv="Content-Style-Type" content="text/css"> |
| <style type="text/css"><!-- |
| pre.display { font-family:inherit } |
| pre.format { font-family:inherit } |
| pre.smalldisplay { font-family:inherit; font-size:smaller } |
| pre.smallformat { font-family:inherit; font-size:smaller } |
| pre.smallexample { font-size:smaller } |
| pre.smalllisp { font-size:smaller } |
| span.sc { font-variant:small-caps } |
| span.roman { font-family:serif; font-weight:normal; } |
| span.sansserif { font-family:sans-serif; font-weight:normal; } |
| --></style> |
| <link rel="stylesheet" type="text/css" href="../cs.css"> |
| </head> |
| <body> |
| <div class="node"> |
| <a name="Dump%2fRestore-Files"></a> |
| <a name="Dump_002fRestore-Files"></a> |
| <p> |
| Next: <a rel="next" accesskey="n" href="Core-File-Generation.html#Core-File-Generation">Core File Generation</a>, |
| Previous: <a rel="previous" accesskey="p" href="Memory-Region-Attributes.html#Memory-Region-Attributes">Memory Region Attributes</a>, |
| Up: <a rel="up" accesskey="u" href="Data.html#Data">Data</a> |
| <hr> |
| </div> |
| |
| <h3 class="section">10.17 Copy Between Memory and a File</h3> |
| |
| <p><a name="index-dump_002frestore-files-630"></a><a name="index-append-data-to-a-file-631"></a><a name="index-dump-data-to-a-file-632"></a><a name="index-restore-data-from-a-file-633"></a> |
| You can use the commands <code>dump</code>, <code>append</code>, and |
| <code>restore</code> to copy data between target memory and a file. The |
| <code>dump</code> and <code>append</code> commands write data to a file, and the |
| <code>restore</code> command reads data from a file back into the inferior's |
| memory. Files may be in binary, Motorola S-record, Intel hex, or |
| Tektronix Hex format; however, <span class="sc">gdb</span> can only append to binary |
| files. |
| |
| |
| <a name="index-dump-634"></a> |
| <dl><dt><code>dump </code><span class="roman">[</span><var>format</var><span class="roman">]</span><code> memory </code><var>filename</var> <var>start_addr</var> <var>end_addr</var><dt><code>dump </code><span class="roman">[</span><var>format</var><span class="roman">]</span><code> value </code><var>filename</var> <var>expr</var><dd>Dump the contents of memory from <var>start_addr</var> to <var>end_addr</var>, |
| or the value of <var>expr</var>, to <var>filename</var> in the given format. |
| |
| <p>The <var>format</var> parameter may be any one of: |
| <dl> |
| <dt><code>binary</code><dd>Raw binary form. |
| <br><dt><code>ihex</code><dd>Intel hex format. |
| <br><dt><code>srec</code><dd>Motorola S-record format. |
| <br><dt><code>tekhex</code><dd>Tektronix Hex format. |
| </dl> |
| |
| <p><span class="sc">gdb</span> uses the same definitions of these formats as the |
| <span class="sc">gnu</span> binary utilities, like ‘<samp><span class="samp">objdump</span></samp>’ and ‘<samp><span class="samp">objcopy</span></samp>’. If |
| <var>format</var> is omitted, <span class="sc">gdb</span> dumps the data in raw binary |
| form. |
| |
| <p><a name="index-append-635"></a><br><dt><code>append </code><span class="roman">[</span><code>binary</code><span class="roman">]</span><code> memory </code><var>filename</var> <var>start_addr</var> <var>end_addr</var><dt><code>append </code><span class="roman">[</span><code>binary</code><span class="roman">]</span><code> value </code><var>filename</var> <var>expr</var><dd>Append the contents of memory from <var>start_addr</var> to <var>end_addr</var>, |
| or the value of <var>expr</var>, to the file <var>filename</var>, in raw binary form. |
| (<span class="sc">gdb</span> can only append data to files in raw binary form.) |
| |
| <p><a name="index-restore-636"></a><br><dt><code>restore </code><var>filename</var> <span class="roman">[</span><code>binary</code><span class="roman">]</span> <var>bias</var> <var>start</var> <var>end</var><dd>Restore the contents of file <var>filename</var> into memory. The |
| <code>restore</code> command can automatically recognize any known <span class="sc">bfd</span> |
| file format, except for raw binary. To restore a raw binary file you |
| must specify the optional keyword <code>binary</code> after the filename. |
| |
| <p>If <var>bias</var> is non-zero, its value will be added to the addresses |
| contained in the file. Binary files always start at address zero, so |
| they will be restored at address <var>bias</var>. Other bfd files have |
| a built-in location; they will be restored at offset <var>bias</var> |
| from that location. |
| |
| <p>If <var>start</var> and/or <var>end</var> are non-zero, then only data between |
| file offset <var>start</var> and file offset <var>end</var> will be restored. |
| These offsets are relative to the addresses in the file, before |
| the <var>bias</var> argument is applied. |
| |
| </dl> |
| |
| </body></html> |
| |
