| <html lang="en"> |
| <head> |
| <title>Standard Replies - 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="Remote-Protocol.html#Remote-Protocol" title="Remote Protocol"> |
| <link rel="prev" href="Overview.html#Overview" title="Overview"> |
| <link rel="next" href="Packets.html#Packets" title="Packets"> |
| <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="Standard-Replies"></a> |
| <p> |
| Next: <a rel="next" accesskey="n" href="Packets.html#Packets">Packets</a>, |
| Previous: <a rel="previous" accesskey="p" href="Overview.html#Overview">Overview</a>, |
| Up: <a rel="up" accesskey="u" href="Remote-Protocol.html#Remote-Protocol">Remote Protocol</a> |
| <hr> |
| </div> |
| |
| <h3 class="section">D.2 Standard Replies</h3> |
| |
| <p>The remote protocol specifies a few standard replies. All commands |
| support these, except as noted in the individual command descriptions. |
| |
| <dl> |
| <dt>‘<samp></samp>’<dd><a name="index-empty-response_002c-for-unsupported-packets-2375"></a><a name="index-unsupported-packets_002c-empty-response-for-2376"></a>For any <var>command</var> not supported by the stub, an empty response |
| (‘<samp><span class="samp">$#00</span></samp>’) should be returned. That way it is possible to extend the |
| protocol. A newer <span class="sc">gdb</span> can tell if a packet is supported based |
| on that response (but see also <a href="qSupported.html#qSupported">qSupported</a>). |
| |
| <br><dt>‘<samp><span class="samp">E </span><var>xx</var></samp>’<dd>An error has occurred; <var>xx</var> is a two-digit hexadecimal error |
| number. In almost all cases, the protocol does not specify the |
| meaning of the error numbers; GDB usually ignores the numbers, or |
| displays them to the user without further interpretation. |
| |
| <br><dt>‘<samp><span class="samp">E.</span><var>name</var><span class="samp">[.</span><var>message</var><span class="samp">]</span></samp>’<dd>An error has occurred; <var>name</var> is the name of the error. The name |
| may contain letters, numbers, and ‘<samp><span class="samp">-</span></samp>’ characters. If present, |
| <var>message</var> is an error message, encoded using the escaped eight-bit |
| conventions for binary data described above. |
| |
| <p>Except as noted, named errors may only be returned to commands |
| documented to expect them; this ensures that older stubs can interact |
| with newer versions of <span class="sc">gdb</span>, even when interpretations for |
| named errors have been added to the protocol. |
| |
| <p>The protocol uses the following error names: |
| |
| <dl> |
| <dt>‘<samp><span class="samp">fatal</span></samp>’<dd>A fatal error has occurred; the stub will be unable to interact |
| further with <span class="sc">gdb</span>. Fatal errors should always include a |
| message explaining their cause. |
| |
| <p>Any command may return this error. |
| |
| <br><dt>‘<samp><span class="samp">memtype</span></samp>’<dd>The memory addressed is of the wrong type for the given command. For |
| example, a ‘<samp><span class="samp">vFlashWrite</span></samp>’ command applied to non-flash memory |
| elicits an ‘<samp><span class="samp">E.memtype</span></samp>’ error response. |
| |
| </dl> |
| </dl> |
| |
| </body></html> |
| |
