| <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <html> |
| <!-- Copyright (C) 1988-2015 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 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." --> |
| <!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ --> |
| <head> |
| <title>Debugging with GDB: Guile Commands</title> |
| |
| <meta name="description" content="Debugging with GDB: Guile Commands"> |
| <meta name="keywords" content="Debugging with GDB: Guile Commands"> |
| <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="Concept-Index.html#Concept-Index" rel="index" title="Concept Index"> |
| <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> |
| <link href="Guile.html#Guile" rel="up" title="Guile"> |
| <link href="Guile-API.html#Guile-API" rel="next" title="Guile API"> |
| <link href="Guile-Introduction.html#Guile-Introduction" rel="prev" title="Guile Introduction"> |
| <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="Guile-Commands"></a> |
| <div class="header"> |
| <p> |
| Next: <a href="Guile-API.html#Guile-API" accesskey="n" rel="next">Guile API</a>, Previous: <a href="Guile-Introduction.html#Guile-Introduction" accesskey="p" rel="prev">Guile Introduction</a>, Up: <a href="Guile.html#Guile" accesskey="u" rel="up">Guile</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> |
| </div> |
| <hr> |
| <a name="Guile-Commands-1"></a> |
| <h4 class="subsection">23.3.2 Guile Commands</h4> |
| <a name="index-guile-commands"></a> |
| <a name="index-commands-to-access-guile"></a> |
| |
| <p><small>GDB</small> provides two commands for accessing the Guile interpreter: |
| </p> |
| <dl compact="compact"> |
| <dd><a name="index-guile_002drepl"></a> |
| <a name="index-gr"></a> |
| </dd> |
| <dt><code>guile-repl</code></dt> |
| <dt><code>gr</code></dt> |
| <dd><p>The <code>guile-repl</code> command can be used to start an interactive |
| Guile prompt or <em>repl</em>. To return to <small>GDB</small>, |
| type <kbd>,q</kbd> or the <code>EOF</code> character (e.g., <kbd>Ctrl-D</kbd> on |
| an empty prompt). These commands do not take any arguments. |
| </p> |
| <a name="index-guile"></a> |
| <a name="index-gu"></a> |
| </dd> |
| <dt><code>guile <span class="roman">[</span><var>scheme-expression</var><span class="roman">]</span></code></dt> |
| <dt><code>gu <span class="roman">[</span><var>scheme-expression</var><span class="roman">]</span></code></dt> |
| <dd><p>The <code>guile</code> command can be used to evaluate a Scheme expression. |
| </p> |
| <p>If given an argument, <small>GDB</small> will pass the argument to the Guile |
| interpreter for evaluation. |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">(gdb) guile (display (+ 20 3)) (newline) |
| 23 |
| </pre></div> |
| |
| <p>The result of the Scheme expression is displayed using normal Guile rules. |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">(gdb) guile (+ 20 3) |
| 23 |
| </pre></div> |
| |
| <p>If you do not provide an argument to <code>guile</code>, it will act as a |
| multi-line command, like <code>define</code>. In this case, the Guile |
| script is made up of subsequent command lines, given after the |
| <code>guile</code> command. This command list is terminated using a line |
| containing <code>end</code>. For example: |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">(gdb) guile |
| >(display 23) |
| >(newline) |
| >end |
| 23 |
| </pre></div> |
| </dd> |
| </dl> |
| |
| <p>It is also possible to execute a Guile script from the <small>GDB</small> |
| interpreter: |
| </p> |
| <dl compact="compact"> |
| <dt><code>source <samp>script-name</samp></code></dt> |
| <dd><p>The script name must end with ‘<samp>.scm</samp>’ and <small>GDB</small> must be configured |
| to recognize the script language based on filename extension using |
| the <code>script-extension</code> setting. See <a href="Extending-GDB.html#Extending-GDB">Extending GDB</a>. |
| </p> |
| </dd> |
| <dt><code>guile (load "script-name")</code></dt> |
| <dd><p>This method uses the <code>load</code> Guile function. |
| It takes a string argument that is the name of the script to load. |
| See the Guile documentation for a description of this function. |
| (see <a href="http://www.gnu.org/software/guile/manual/html_node/Loading.html#Loading">Loading</a> in <cite>GNU Guile Reference Manual</cite>). |
| </p></dd> |
| </dl> |
| |
| <hr> |
| <div class="header"> |
| <p> |
| Next: <a href="Guile-API.html#Guile-API" accesskey="n" rel="next">Guile API</a>, Previous: <a href="Guile-Introduction.html#Guile-Introduction" accesskey="p" rel="prev">Guile Introduction</a>, Up: <a href="Guile.html#Guile" accesskey="u" rel="up">Guile</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> |
| </div> |
| |
| |
| |
| </body> |
| </html> |
