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837 lines
37 KiB
HTML
837 lines
37 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1988-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Free Software" and "Free Software Needs
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Free Documentation", with the Front-Cover Texts being "A GNU Manual,"
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and with the Back-Cover Texts as in (a) below.
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(a) The FSF's Back-Cover Text is: "You are free to copy and modify
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this GNU Manual. Buying copies from GNU Press supports the FSF in
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developing GNU and promoting software freedom." -->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>GDB/MI Breakpoint Commands (Debugging with GDB)</title>
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<meta name="description" content="GDB/MI Breakpoint Commands (Debugging with GDB)">
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<meta name="keywords" content="GDB/MI Breakpoint Commands (Debugging with GDB)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="GDB_002fMI.html#GDB_002fMI" rel="up" title="GDB/MI">
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<link href="GDB_002fMI-Catchpoint-Commands.html#GDB_002fMI-Catchpoint-Commands" rel="next" title="GDB/MI Catchpoint Commands">
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<link href="GDB_002fMI-Command-Description-Format.html#GDB_002fMI-Command-Description-Format" rel="prev" title="GDB/MI Command Description Format">
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<style type="text/css">
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<!--
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a.summary-letter {text-decoration: none}
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blockquote.indentedblock {margin-right: 0em}
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blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
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blockquote.smallquotation {font-size: smaller}
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div.display {margin-left: 3.2em}
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div.example {margin-left: 3.2em}
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div.lisp {margin-left: 3.2em}
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div.smalldisplay {margin-left: 3.2em}
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div.smallexample {margin-left: 3.2em}
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div.smalllisp {margin-left: 3.2em}
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kbd {font-style: oblique}
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pre.display {font-family: inherit}
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pre.format {font-family: inherit}
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pre.menu-comment {font-family: serif}
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pre.menu-preformatted {font-family: serif}
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pre.smalldisplay {font-family: inherit; font-size: smaller}
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pre.smallexample {font-size: smaller}
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pre.smallformat {font-family: inherit; font-size: smaller}
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pre.smalllisp {font-size: smaller}
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span.nolinebreak {white-space: nowrap}
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span.roman {font-family: initial; font-weight: normal}
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span.sansserif {font-family: sans-serif; font-weight: normal}
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ul.no-bullet {list-style: none}
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-->
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</style>
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</head>
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<body lang="en">
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<a name="GDB_002fMI-Breakpoint-Commands"></a>
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<div class="header">
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<p>
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Next: <a href="GDB_002fMI-Catchpoint-Commands.html#GDB_002fMI-Catchpoint-Commands" accesskey="n" rel="next">GDB/MI Catchpoint Commands</a>, Previous: <a href="GDB_002fMI-Command-Description-Format.html#GDB_002fMI-Command-Description-Format" accesskey="p" rel="prev">GDB/MI Command Description Format</a>, Up: <a href="GDB_002fMI.html#GDB_002fMI" accesskey="u" rel="up">GDB/MI</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>
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</div>
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<hr>
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<a name="GDB_002fMI-Breakpoint-Commands-1"></a>
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<h3 class="section">27.8 <small>GDB/MI</small> Breakpoint Commands</h3>
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<a name="index-breakpoint-commands-for-GDB_002fMI"></a>
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<a name="index-GDB_002fMI_002c-breakpoint-commands"></a>
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<p>This section documents <small>GDB/MI</small> commands for manipulating
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breakpoints.
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</p>
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<a name="The-_002dbreak_002dafter-Command"></a>
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<h4 class="subheading">The <code>-break-after</code> Command</h4>
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<a name="index-_002dbreak_002dafter"></a>
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<a name="Synopsis-1"></a>
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<h4 class="subsubheading">Synopsis</h4>
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<div class="smallexample">
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<pre class="smallexample"> -break-after <var>number</var> <var>count</var>
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</pre></div>
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<p>The breakpoint number <var>number</var> is not in effect until it has been
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hit <var>count</var> times. To see how this is reflected in the output of
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the ‘<samp>-break-list</samp>’ command, see the description of the
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‘<samp>-break-list</samp>’ command below.
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</p>
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<a name="GDB-Command-1"></a>
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<h4 class="subsubheading"><small>GDB</small> Command</h4>
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<p>The corresponding <small>GDB</small> command is ‘<samp>ignore</samp>’.
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</p>
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<a name="Example-1"></a>
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<h4 class="subsubheading">Example</h4>
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<div class="smallexample">
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<pre class="smallexample">(gdb)
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-break-insert main
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^done,bkpt={number="1",type="breakpoint",disp="keep",
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enabled="y",addr="0x000100d0",func="main",file="hello.c",
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fullname="/home/foo/hello.c",line="5",thread-groups=["i1"],
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times="0"}
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(gdb)
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-break-after 1 3
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~
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^done
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(gdb)
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-break-list
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^done,BreakpointTable={nr_rows="1",nr_cols="6",
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hdr=[{width="3",alignment="-1",col_name="number",colhdr="Num"},
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{width="14",alignment="-1",col_name="type",colhdr="Type"},
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{width="4",alignment="-1",col_name="disp",colhdr="Disp"},
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{width="3",alignment="-1",col_name="enabled",colhdr="Enb"},
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{width="10",alignment="-1",col_name="addr",colhdr="Address"},
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{width="40",alignment="2",col_name="what",colhdr="What"}],
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body=[bkpt={number="1",type="breakpoint",disp="keep",enabled="y",
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addr="0x000100d0",func="main",file="hello.c",fullname="/home/foo/hello.c",
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line="5",thread-groups=["i1"],times="0",ignore="3"}]}
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(gdb)
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</pre></div>
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<a name="The-_002dbreak_002dcommands-Command"></a>
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<h4 class="subheading">The <code>-break-commands</code> Command</h4>
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<a name="index-_002dbreak_002dcommands"></a>
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<a name="Synopsis-2"></a>
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<h4 class="subsubheading">Synopsis</h4>
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<div class="smallexample">
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<pre class="smallexample"> -break-commands <var>number</var> [ <var>command1</var> ... <var>commandN</var> ]
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</pre></div>
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<p>Specifies the CLI commands that should be executed when breakpoint
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<var>number</var> is hit. The parameters <var>command1</var> to <var>commandN</var>
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are the commands. If no command is specified, any previously-set
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commands are cleared. See <a href="Break-Commands.html#Break-Commands">Break Commands</a>. Typical use of this
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functionality is tracing a program, that is, printing of values of
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some variables whenever breakpoint is hit and then continuing.
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</p>
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<a name="GDB-Command-2"></a>
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<h4 class="subsubheading"><small>GDB</small> Command</h4>
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<p>The corresponding <small>GDB</small> command is ‘<samp>commands</samp>’.
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</p>
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<a name="Example-2"></a>
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<h4 class="subsubheading">Example</h4>
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<div class="smallexample">
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<pre class="smallexample">(gdb)
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-break-insert main
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^done,bkpt={number="1",type="breakpoint",disp="keep",
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enabled="y",addr="0x000100d0",func="main",file="hello.c",
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fullname="/home/foo/hello.c",line="5",thread-groups=["i1"],
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times="0"}
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(gdb)
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-break-commands 1 "print v" "continue"
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^done
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(gdb)
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</pre></div>
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<a name="The-_002dbreak_002dcondition-Command"></a>
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<h4 class="subheading">The <code>-break-condition</code> Command</h4>
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||
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<a name="index-_002dbreak_002dcondition"></a>
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<a name="Synopsis-3"></a>
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||
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<h4 class="subsubheading">Synopsis</h4>
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<div class="smallexample">
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<pre class="smallexample"> -break-condition <var>number</var> <var>expr</var>
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</pre></div>
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<p>Breakpoint <var>number</var> will stop the program only if the condition in
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<var>expr</var> is true. The condition becomes part of the
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‘<samp>-break-list</samp>’ output (see the description of the ‘<samp>-break-list</samp>’
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command below).
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</p>
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<a name="GDB-Command-3"></a>
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||
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<h4 class="subsubheading"><small>GDB</small> Command</h4>
|
||
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<p>The corresponding <small>GDB</small> command is ‘<samp>condition</samp>’.
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</p>
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||
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<a name="Example-3"></a>
|
||
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<h4 class="subsubheading">Example</h4>
|
||
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<div class="smallexample">
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<pre class="smallexample">(gdb)
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-break-condition 1 1
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^done
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(gdb)
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-break-list
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^done,BreakpointTable={nr_rows="1",nr_cols="6",
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hdr=[{width="3",alignment="-1",col_name="number",colhdr="Num"},
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{width="14",alignment="-1",col_name="type",colhdr="Type"},
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{width="4",alignment="-1",col_name="disp",colhdr="Disp"},
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{width="3",alignment="-1",col_name="enabled",colhdr="Enb"},
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{width="10",alignment="-1",col_name="addr",colhdr="Address"},
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{width="40",alignment="2",col_name="what",colhdr="What"}],
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body=[bkpt={number="1",type="breakpoint",disp="keep",enabled="y",
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addr="0x000100d0",func="main",file="hello.c",fullname="/home/foo/hello.c",
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line="5",cond="1",thread-groups=["i1"],times="0",ignore="3"}]}
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(gdb)
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</pre></div>
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<a name="The-_002dbreak_002ddelete-Command"></a>
|
||
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<h4 class="subheading">The <code>-break-delete</code> Command</h4>
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||
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<a name="index-_002dbreak_002ddelete"></a>
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||
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<a name="Synopsis-4"></a>
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||
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<h4 class="subsubheading">Synopsis</h4>
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<div class="smallexample">
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<pre class="smallexample"> -break-delete ( <var>breakpoint</var> )+
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</pre></div>
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<p>Delete the breakpoint(s) whose number(s) are specified in the argument
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list. This is obviously reflected in the breakpoint list.
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</p>
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<a name="GDB-Command-4"></a>
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<h4 class="subsubheading"><small>GDB</small> Command</h4>
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<p>The corresponding <small>GDB</small> command is ‘<samp>delete</samp>’.
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</p>
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||
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|
<a name="Example-4"></a>
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<h4 class="subsubheading">Example</h4>
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<div class="smallexample">
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<pre class="smallexample">(gdb)
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-break-delete 1
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^done
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(gdb)
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-break-list
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^done,BreakpointTable={nr_rows="0",nr_cols="6",
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hdr=[{width="3",alignment="-1",col_name="number",colhdr="Num"},
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{width="14",alignment="-1",col_name="type",colhdr="Type"},
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||
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{width="4",alignment="-1",col_name="disp",colhdr="Disp"},
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||
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{width="3",alignment="-1",col_name="enabled",colhdr="Enb"},
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||
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{width="10",alignment="-1",col_name="addr",colhdr="Address"},
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||
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{width="40",alignment="2",col_name="what",colhdr="What"}],
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||
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body=[]}
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||
|
|
(gdb)
|
||
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|
</pre></div>
|
||
|
|
|
||
|
|
<a name="The-_002dbreak_002ddisable-Command"></a>
|
||
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|
<h4 class="subheading">The <code>-break-disable</code> Command</h4>
|
||
|
|
<a name="index-_002dbreak_002ddisable"></a>
|
||
|
|
|
||
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|
<a name="Synopsis-5"></a>
|
||
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<h4 class="subsubheading">Synopsis</h4>
|
||
|
|
|
||
|
|
<div class="smallexample">
|
||
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|
<pre class="smallexample"> -break-disable ( <var>breakpoint</var> )+
|
||
|
|
</pre></div>
|
||
|
|
|
||
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|
<p>Disable the named <var>breakpoint</var>(s). The field ‘<samp>enabled</samp>’ in the
|
||
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|
break list is now set to ‘<samp>n</samp>’ for the named <var>breakpoint</var>(s).
|
||
|
|
</p>
|
||
|
|
<a name="GDB-Command-5"></a>
|
||
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|
<h4 class="subsubheading"><small>GDB</small> Command</h4>
|
||
|
|
|
||
|
|
<p>The corresponding <small>GDB</small> command is ‘<samp>disable</samp>’.
|
||
|
|
</p>
|
||
|
|
<a name="Example-5"></a>
|
||
|
|
<h4 class="subsubheading">Example</h4>
|
||
|
|
|
||
|
|
<div class="smallexample">
|
||
|
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<pre class="smallexample">(gdb)
|
||
|
|
-break-disable 2
|
||
|
|
^done
|
||
|
|
(gdb)
|
||
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|
-break-list
|
||
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|
^done,BreakpointTable={nr_rows="1",nr_cols="6",
|
||
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|
hdr=[{width="3",alignment="-1",col_name="number",colhdr="Num"},
|
||
|
|
{width="14",alignment="-1",col_name="type",colhdr="Type"},
|
||
|
|
{width="4",alignment="-1",col_name="disp",colhdr="Disp"},
|
||
|
|
{width="3",alignment="-1",col_name="enabled",colhdr="Enb"},
|
||
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|
{width="10",alignment="-1",col_name="addr",colhdr="Address"},
|
||
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|
{width="40",alignment="2",col_name="what",colhdr="What"}],
|
||
|
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body=[bkpt={number="2",type="breakpoint",disp="keep",enabled="n",
|
||
|
|
addr="0x000100d0",func="main",file="hello.c",fullname="/home/foo/hello.c",
|
||
|
|
line="5",thread-groups=["i1"],times="0"}]}
|
||
|
|
(gdb)
|
||
|
|
</pre></div>
|
||
|
|
|
||
|
|
<a name="The-_002dbreak_002denable-Command"></a>
|
||
|
|
<h4 class="subheading">The <code>-break-enable</code> Command</h4>
|
||
|
|
<a name="index-_002dbreak_002denable"></a>
|
||
|
|
|
||
|
|
<a name="Synopsis-6"></a>
|
||
|
|
<h4 class="subsubheading">Synopsis</h4>
|
||
|
|
|
||
|
|
<div class="smallexample">
|
||
|
|
<pre class="smallexample"> -break-enable ( <var>breakpoint</var> )+
|
||
|
|
</pre></div>
|
||
|
|
|
||
|
|
<p>Enable (previously disabled) <var>breakpoint</var>(s).
|
||
|
|
</p>
|
||
|
|
<a name="GDB-Command-6"></a>
|
||
|
|
<h4 class="subsubheading"><small>GDB</small> Command</h4>
|
||
|
|
|
||
|
|
<p>The corresponding <small>GDB</small> command is ‘<samp>enable</samp>’.
|
||
|
|
</p>
|
||
|
|
<a name="Example-6"></a>
|
||
|
|
<h4 class="subsubheading">Example</h4>
|
||
|
|
|
||
|
|
<div class="smallexample">
|
||
|
|
<pre class="smallexample">(gdb)
|
||
|
|
-break-enable 2
|
||
|
|
^done
|
||
|
|
(gdb)
|
||
|
|
-break-list
|
||
|
|
^done,BreakpointTable={nr_rows="1",nr_cols="6",
|
||
|
|
hdr=[{width="3",alignment="-1",col_name="number",colhdr="Num"},
|
||
|
|
{width="14",alignment="-1",col_name="type",colhdr="Type"},
|
||
|
|
{width="4",alignment="-1",col_name="disp",colhdr="Disp"},
|
||
|
|
{width="3",alignment="-1",col_name="enabled",colhdr="Enb"},
|
||
|
|
{width="10",alignment="-1",col_name="addr",colhdr="Address"},
|
||
|
|
{width="40",alignment="2",col_name="what",colhdr="What"}],
|
||
|
|
body=[bkpt={number="2",type="breakpoint",disp="keep",enabled="y",
|
||
|
|
addr="0x000100d0",func="main",file="hello.c",fullname="/home/foo/hello.c",
|
||
|
|
line="5",thread-groups=["i1"],times="0"}]}
|
||
|
|
(gdb)
|
||
|
|
</pre></div>
|
||
|
|
|
||
|
|
<a name="The-_002dbreak_002dinfo-Command"></a>
|
||
|
|
<h4 class="subheading">The <code>-break-info</code> Command</h4>
|
||
|
|
<a name="index-_002dbreak_002dinfo"></a>
|
||
|
|
|
||
|
|
<a name="Synopsis-7"></a>
|
||
|
|
<h4 class="subsubheading">Synopsis</h4>
|
||
|
|
|
||
|
|
<div class="smallexample">
|
||
|
|
<pre class="smallexample"> -break-info <var>breakpoint</var>
|
||
|
|
</pre></div>
|
||
|
|
|
||
|
|
<p>Get information about a single breakpoint.
|
||
|
|
</p>
|
||
|
|
<p>The result is a table of breakpoints. See <a href="GDB_002fMI-Breakpoint-Information.html#GDB_002fMI-Breakpoint-Information">GDB/MI Breakpoint Information</a>, for details on the format of each breakpoint in the
|
||
|
|
table.
|
||
|
|
</p>
|
||
|
|
<a name="GDB-Command-7"></a>
|
||
|
|
<h4 class="subsubheading"><small>GDB</small> Command</h4>
|
||
|
|
|
||
|
|
<p>The corresponding <small>GDB</small> command is ‘<samp>info break <var>breakpoint</var></samp>’.
|
||
|
|
</p>
|
||
|
|
<a name="Example-7"></a>
|
||
|
|
<h4 class="subsubheading">Example</h4>
|
||
|
|
<p>N.A.
|
||
|
|
</p>
|
||
|
|
<a name="The-_002dbreak_002dinsert-Command"></a>
|
||
|
|
<h4 class="subheading">The <code>-break-insert</code> Command</h4>
|
||
|
|
<a name="index-_002dbreak_002dinsert"></a>
|
||
|
|
<a name="g_t_002dbreak_002dinsert"></a>
|
||
|
|
<a name="Synopsis-8"></a>
|
||
|
|
<h4 class="subsubheading">Synopsis</h4>
|
||
|
|
|
||
|
|
<div class="smallexample">
|
||
|
|
<pre class="smallexample"> -break-insert [ -t ] [ -h ] [ -f ] [ -d ] [ -a ]
|
||
|
|
[ -c <var>condition</var> ] [ -i <var>ignore-count</var> ]
|
||
|
|
[ -p <var>thread-id</var> ] [ <var>location</var> ]
|
||
|
|
</pre></div>
|
||
|
|
|
||
|
|
<p>If specified, <var>location</var>, can be one of:
|
||
|
|
</p>
|
||
|
|
<dl compact="compact">
|
||
|
|
<dt><var>linespec location</var></dt>
|
||
|
|
<dd><p>A linespec location. See <a href="Linespec-Locations.html#Linespec-Locations">Linespec Locations</a>.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><var>explicit location</var></dt>
|
||
|
|
<dd><p>An explicit location. <small>GDB/MI</small> explicit locations are
|
||
|
|
analogous to the CLI’s explicit locations using the option names
|
||
|
|
listed below. See <a href="Explicit-Locations.html#Explicit-Locations">Explicit Locations</a>.
|
||
|
|
</p>
|
||
|
|
<dl compact="compact">
|
||
|
|
<dt>‘<samp>--source <var>filename</var></samp>’</dt>
|
||
|
|
<dd><p>The source file name of the location. This option requires the use
|
||
|
|
of either ‘<samp>--function</samp>’ or ‘<samp>--line</samp>’.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt>‘<samp>--function <var>function</var></samp>’</dt>
|
||
|
|
<dd><p>The name of a function or method.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt>‘<samp>--label <var>label</var></samp>’</dt>
|
||
|
|
<dd><p>The name of a label.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt>‘<samp>--line <var>lineoffset</var></samp>’</dt>
|
||
|
|
<dd><p>An absolute or relative line offset from the start of the location.
|
||
|
|
</p></dd>
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
</dd>
|
||
|
|
<dt><var>address location</var></dt>
|
||
|
|
<dd><p>An address location, *<var>address</var>. See <a href="Address-Locations.html#Address-Locations">Address Locations</a>.
|
||
|
|
</p></dd>
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
<p>The possible optional parameters of this command are:
|
||
|
|
</p>
|
||
|
|
<dl compact="compact">
|
||
|
|
<dt>‘<samp>-t</samp>’</dt>
|
||
|
|
<dd><p>Insert a temporary breakpoint.
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>-h</samp>’</dt>
|
||
|
|
<dd><p>Insert a hardware breakpoint.
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>-f</samp>’</dt>
|
||
|
|
<dd><p>If <var>location</var> cannot be parsed (for example if it
|
||
|
|
refers to unknown files or functions), create a pending
|
||
|
|
breakpoint. Without this flag, <small>GDB</small> will report
|
||
|
|
an error, and won’t create a breakpoint, if <var>location</var>
|
||
|
|
cannot be parsed.
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>-d</samp>’</dt>
|
||
|
|
<dd><p>Create a disabled breakpoint.
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>-a</samp>’</dt>
|
||
|
|
<dd><p>Create a tracepoint. See <a href="Tracepoints.html#Tracepoints">Tracepoints</a>. When this parameter
|
||
|
|
is used together with ‘<samp>-h</samp>’, a fast tracepoint is created.
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>-c <var>condition</var></samp>’</dt>
|
||
|
|
<dd><p>Make the breakpoint conditional on <var>condition</var>.
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>-i <var>ignore-count</var></samp>’</dt>
|
||
|
|
<dd><p>Initialize the <var>ignore-count</var>.
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>-p <var>thread-id</var></samp>’</dt>
|
||
|
|
<dd><p>Restrict the breakpoint to the thread with the specified global
|
||
|
|
<var>thread-id</var>.
|
||
|
|
</p></dd>
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
<a name="Result-1"></a>
|
||
|
|
<h4 class="subsubheading">Result</h4>
|
||
|
|
|
||
|
|
<p>See <a href="GDB_002fMI-Breakpoint-Information.html#GDB_002fMI-Breakpoint-Information">GDB/MI Breakpoint Information</a>, for details on the format of the
|
||
|
|
resulting breakpoint.
|
||
|
|
</p>
|
||
|
|
<p>Note: this format is open to change.
|
||
|
|
</p>
|
||
|
|
<a name="GDB-Command-8"></a>
|
||
|
|
<h4 class="subsubheading"><small>GDB</small> Command</h4>
|
||
|
|
|
||
|
|
<p>The corresponding <small>GDB</small> commands are ‘<samp>break</samp>’, ‘<samp>tbreak</samp>’,
|
||
|
|
‘<samp>hbreak</samp>’, and ‘<samp>thbreak</samp>’. </p>
|
||
|
|
<a name="Example-8"></a>
|
||
|
|
<h4 class="subsubheading">Example</h4>
|
||
|
|
|
||
|
|
<div class="smallexample">
|
||
|
|
<pre class="smallexample">(gdb)
|
||
|
|
-break-insert main
|
||
|
|
^done,bkpt={number="1",addr="0x0001072c",file="recursive2.c",
|
||
|
|
fullname="/home/foo/recursive2.c,line="4",thread-groups=["i1"],
|
||
|
|
times="0"}
|
||
|
|
(gdb)
|
||
|
|
-break-insert -t foo
|
||
|
|
^done,bkpt={number="2",addr="0x00010774",file="recursive2.c",
|
||
|
|
fullname="/home/foo/recursive2.c,line="11",thread-groups=["i1"],
|
||
|
|
times="0"}
|
||
|
|
(gdb)
|
||
|
|
-break-list
|
||
|
|
^done,BreakpointTable={nr_rows="2",nr_cols="6",
|
||
|
|
hdr=[{width="3",alignment="-1",col_name="number",colhdr="Num"},
|
||
|
|
{width="14",alignment="-1",col_name="type",colhdr="Type"},
|
||
|
|
{width="4",alignment="-1",col_name="disp",colhdr="Disp"},
|
||
|
|
{width="3",alignment="-1",col_name="enabled",colhdr="Enb"},
|
||
|
|
{width="10",alignment="-1",col_name="addr",colhdr="Address"},
|
||
|
|
{width="40",alignment="2",col_name="what",colhdr="What"}],
|
||
|
|
body=[bkpt={number="1",type="breakpoint",disp="keep",enabled="y",
|
||
|
|
addr="0x0001072c", func="main",file="recursive2.c",
|
||
|
|
fullname="/home/foo/recursive2.c,"line="4",thread-groups=["i1"],
|
||
|
|
times="0"},
|
||
|
|
bkpt={number="2",type="breakpoint",disp="del",enabled="y",
|
||
|
|
addr="0x00010774",func="foo",file="recursive2.c",
|
||
|
|
fullname="/home/foo/recursive2.c",line="11",thread-groups=["i1"],
|
||
|
|
times="0"}]}
|
||
|
|
(gdb)
|
||
|
|
</pre></div>
|
||
|
|
|
||
|
|
<a name="The-_002ddprintf_002dinsert-Command"></a>
|
||
|
|
<h4 class="subheading">The <code>-dprintf-insert</code> Command</h4>
|
||
|
|
<a name="index-_002ddprintf_002dinsert"></a>
|
||
|
|
|
||
|
|
<a name="Synopsis-9"></a>
|
||
|
|
<h4 class="subsubheading">Synopsis</h4>
|
||
|
|
|
||
|
|
<div class="smallexample">
|
||
|
|
<pre class="smallexample"> -dprintf-insert [ -t ] [ -f ] [ -d ]
|
||
|
|
[ -c <var>condition</var> ] [ -i <var>ignore-count</var> ]
|
||
|
|
[ -p <var>thread-id</var> ] [ <var>location</var> ] [ <var>format</var> ]
|
||
|
|
[ <var>argument</var> ]
|
||
|
|
</pre></div>
|
||
|
|
|
||
|
|
<p>If supplied, <var>location</var> may be specified the same way as for
|
||
|
|
the <code>-break-insert</code> command. See <a href="#g_t_002dbreak_002dinsert">-break-insert</a>.
|
||
|
|
</p>
|
||
|
|
<p>The possible optional parameters of this command are:
|
||
|
|
</p>
|
||
|
|
<dl compact="compact">
|
||
|
|
<dt>‘<samp>-t</samp>’</dt>
|
||
|
|
<dd><p>Insert a temporary breakpoint.
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>-f</samp>’</dt>
|
||
|
|
<dd><p>If <var>location</var> cannot be parsed (for example, if it
|
||
|
|
refers to unknown files or functions), create a pending
|
||
|
|
breakpoint. Without this flag, <small>GDB</small> will report
|
||
|
|
an error, and won’t create a breakpoint, if <var>location</var>
|
||
|
|
cannot be parsed.
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>-d</samp>’</dt>
|
||
|
|
<dd><p>Create a disabled breakpoint.
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>-c <var>condition</var></samp>’</dt>
|
||
|
|
<dd><p>Make the breakpoint conditional on <var>condition</var>.
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>-i <var>ignore-count</var></samp>’</dt>
|
||
|
|
<dd><p>Set the ignore count of the breakpoint (see <a href="Conditions.html#Conditions">ignore count</a>)
|
||
|
|
to <var>ignore-count</var>.
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>-p <var>thread-id</var></samp>’</dt>
|
||
|
|
<dd><p>Restrict the breakpoint to the thread with the specified global
|
||
|
|
<var>thread-id</var>.
|
||
|
|
</p></dd>
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
<a name="Result-2"></a>
|
||
|
|
<h4 class="subsubheading">Result</h4>
|
||
|
|
|
||
|
|
<p>See <a href="GDB_002fMI-Breakpoint-Information.html#GDB_002fMI-Breakpoint-Information">GDB/MI Breakpoint Information</a>, for details on the format of the
|
||
|
|
resulting breakpoint.
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<a name="GDB-Command-9"></a>
|
||
|
|
<h4 class="subsubheading"><small>GDB</small> Command</h4>
|
||
|
|
|
||
|
|
<p>The corresponding <small>GDB</small> command is ‘<samp>dprintf</samp>’.
|
||
|
|
</p>
|
||
|
|
<a name="Example-9"></a>
|
||
|
|
<h4 class="subsubheading">Example</h4>
|
||
|
|
|
||
|
|
<div class="smallexample">
|
||
|
|
<pre class="smallexample">(gdb)
|
||
|
|
4-dprintf-insert foo "At foo entry\n"
|
||
|
|
4^done,bkpt={number="1",type="dprintf",disp="keep",enabled="y",
|
||
|
|
addr="0x000000000040061b",func="foo",file="mi-dprintf.c",
|
||
|
|
fullname="mi-dprintf.c",line="25",thread-groups=["i1"],
|
||
|
|
times="0",script={"printf \"At foo entry\\n\"","continue"},
|
||
|
|
original-location="foo"}
|
||
|
|
(gdb)
|
||
|
|
5-dprintf-insert 26 "arg=%d, g=%d\n" arg g
|
||
|
|
5^done,bkpt={number="2",type="dprintf",disp="keep",enabled="y",
|
||
|
|
addr="0x000000000040062a",func="foo",file="mi-dprintf.c",
|
||
|
|
fullname="mi-dprintf.c",line="26",thread-groups=["i1"],
|
||
|
|
times="0",script={"printf \"arg=%d, g=%d\\n\", arg, g","continue"},
|
||
|
|
original-location="mi-dprintf.c:26"}
|
||
|
|
(gdb)
|
||
|
|
</pre></div>
|
||
|
|
|
||
|
|
<a name="The-_002dbreak_002dlist-Command"></a>
|
||
|
|
<h4 class="subheading">The <code>-break-list</code> Command</h4>
|
||
|
|
<a name="index-_002dbreak_002dlist"></a>
|
||
|
|
|
||
|
|
<a name="Synopsis-10"></a>
|
||
|
|
<h4 class="subsubheading">Synopsis</h4>
|
||
|
|
|
||
|
|
<div class="smallexample">
|
||
|
|
<pre class="smallexample"> -break-list
|
||
|
|
</pre></div>
|
||
|
|
|
||
|
|
<p>Displays the list of inserted breakpoints, showing the following fields:
|
||
|
|
</p>
|
||
|
|
<dl compact="compact">
|
||
|
|
<dt>‘<samp>Number</samp>’</dt>
|
||
|
|
<dd><p>number of the breakpoint
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>Type</samp>’</dt>
|
||
|
|
<dd><p>type of the breakpoint: ‘<samp>breakpoint</samp>’ or ‘<samp>watchpoint</samp>’
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>Disposition</samp>’</dt>
|
||
|
|
<dd><p>should the breakpoint be deleted or disabled when it is hit: ‘<samp>keep</samp>’
|
||
|
|
or ‘<samp>nokeep</samp>’
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>Enabled</samp>’</dt>
|
||
|
|
<dd><p>is the breakpoint enabled or no: ‘<samp>y</samp>’ or ‘<samp>n</samp>’
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>Address</samp>’</dt>
|
||
|
|
<dd><p>memory location at which the breakpoint is set
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>What</samp>’</dt>
|
||
|
|
<dd><p>logical location of the breakpoint, expressed by function name, file
|
||
|
|
name, line number
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>Thread-groups</samp>’</dt>
|
||
|
|
<dd><p>list of thread groups to which this breakpoint applies
|
||
|
|
</p></dd>
|
||
|
|
<dt>‘<samp>Times</samp>’</dt>
|
||
|
|
<dd><p>number of times the breakpoint has been hit
|
||
|
|
</p></dd>
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
<p>If there are no breakpoints or watchpoints, the <code>BreakpointTable</code>
|
||
|
|
<code>body</code> field is an empty list.
|
||
|
|
</p>
|
||
|
|
<a name="GDB-Command-10"></a>
|
||
|
|
<h4 class="subsubheading"><small>GDB</small> Command</h4>
|
||
|
|
|
||
|
|
<p>The corresponding <small>GDB</small> command is ‘<samp>info break</samp>’.
|
||
|
|
</p>
|
||
|
|
<a name="Example-10"></a>
|
||
|
|
<h4 class="subsubheading">Example</h4>
|
||
|
|
|
||
|
|
<div class="smallexample">
|
||
|
|
<pre class="smallexample">(gdb)
|
||
|
|
-break-list
|
||
|
|
^done,BreakpointTable={nr_rows="2",nr_cols="6",
|
||
|
|
hdr=[{width="3",alignment="-1",col_name="number",colhdr="Num"},
|
||
|
|
{width="14",alignment="-1",col_name="type",colhdr="Type"},
|
||
|
|
{width="4",alignment="-1",col_name="disp",colhdr="Disp"},
|
||
|
|
{width="3",alignment="-1",col_name="enabled",colhdr="Enb"},
|
||
|
|
{width="10",alignment="-1",col_name="addr",colhdr="Address"},
|
||
|
|
{width="40",alignment="2",col_name="what",colhdr="What"}],
|
||
|
|
body=[bkpt={number="1",type="breakpoint",disp="keep",enabled="y",
|
||
|
|
addr="0x000100d0",func="main",file="hello.c",line="5",thread-groups=["i1"],
|
||
|
|
times="0"},
|
||
|
|
bkpt={number="2",type="breakpoint",disp="keep",enabled="y",
|
||
|
|
addr="0x00010114",func="foo",file="hello.c",fullname="/home/foo/hello.c",
|
||
|
|
line="13",thread-groups=["i1"],times="0"}]}
|
||
|
|
(gdb)
|
||
|
|
</pre></div>
|
||
|
|
|
||
|
|
<p>Here’s an example of the result when there are no breakpoints:
|
||
|
|
</p>
|
||
|
|
<div class="smallexample">
|
||
|
|
<pre class="smallexample">(gdb)
|
||
|
|
-break-list
|
||
|
|
^done,BreakpointTable={nr_rows="0",nr_cols="6",
|
||
|
|
hdr=[{width="3",alignment="-1",col_name="number",colhdr="Num"},
|
||
|
|
{width="14",alignment="-1",col_name="type",colhdr="Type"},
|
||
|
|
{width="4",alignment="-1",col_name="disp",colhdr="Disp"},
|
||
|
|
{width="3",alignment="-1",col_name="enabled",colhdr="Enb"},
|
||
|
|
{width="10",alignment="-1",col_name="addr",colhdr="Address"},
|
||
|
|
{width="40",alignment="2",col_name="what",colhdr="What"}],
|
||
|
|
body=[]}
|
||
|
|
(gdb)
|
||
|
|
</pre></div>
|
||
|
|
|
||
|
|
<a name="The-_002dbreak_002dpasscount-Command"></a>
|
||
|
|
<h4 class="subheading">The <code>-break-passcount</code> Command</h4>
|
||
|
|
<a name="index-_002dbreak_002dpasscount"></a>
|
||
|
|
|
||
|
|
<a name="Synopsis-11"></a>
|
||
|
|
<h4 class="subsubheading">Synopsis</h4>
|
||
|
|
|
||
|
|
<div class="smallexample">
|
||
|
|
<pre class="smallexample"> -break-passcount <var>tracepoint-number</var> <var>passcount</var>
|
||
|
|
</pre></div>
|
||
|
|
|
||
|
|
<p>Set the passcount for tracepoint <var>tracepoint-number</var> to
|
||
|
|
<var>passcount</var>. If the breakpoint referred to by <var>tracepoint-number</var>
|
||
|
|
is not a tracepoint, error is emitted. This corresponds to CLI
|
||
|
|
command ‘<samp>passcount</samp>’.
|
||
|
|
</p>
|
||
|
|
<a name="The-_002dbreak_002dwatch-Command"></a>
|
||
|
|
<h4 class="subheading">The <code>-break-watch</code> Command</h4>
|
||
|
|
<a name="index-_002dbreak_002dwatch"></a>
|
||
|
|
|
||
|
|
<a name="Synopsis-12"></a>
|
||
|
|
<h4 class="subsubheading">Synopsis</h4>
|
||
|
|
|
||
|
|
<div class="smallexample">
|
||
|
|
<pre class="smallexample"> -break-watch [ -a | -r ]
|
||
|
|
</pre></div>
|
||
|
|
|
||
|
|
<p>Create a watchpoint. With the ‘<samp>-a</samp>’ option it will create an
|
||
|
|
<em>access</em> watchpoint, i.e., a watchpoint that triggers either on a
|
||
|
|
read from or on a write to the memory location. With the ‘<samp>-r</samp>’
|
||
|
|
option, the watchpoint created is a <em>read</em> watchpoint, i.e., it will
|
||
|
|
trigger only when the memory location is accessed for reading. Without
|
||
|
|
either of the options, the watchpoint created is a regular watchpoint,
|
||
|
|
i.e., it will trigger when the memory location is accessed for writing.
|
||
|
|
See <a href="Set-Watchpoints.html#Set-Watchpoints">Setting Watchpoints</a>.
|
||
|
|
</p>
|
||
|
|
<p>Note that ‘<samp>-break-list</samp>’ will report a single list of watchpoints and
|
||
|
|
breakpoints inserted.
|
||
|
|
</p>
|
||
|
|
<a name="GDB-Command-11"></a>
|
||
|
|
<h4 class="subsubheading"><small>GDB</small> Command</h4>
|
||
|
|
|
||
|
|
<p>The corresponding <small>GDB</small> commands are ‘<samp>watch</samp>’, ‘<samp>awatch</samp>’, and
|
||
|
|
‘<samp>rwatch</samp>’.
|
||
|
|
</p>
|
||
|
|
<a name="Example-11"></a>
|
||
|
|
<h4 class="subsubheading">Example</h4>
|
||
|
|
|
||
|
|
<p>Setting a watchpoint on a variable in the <code>main</code> function:
|
||
|
|
</p>
|
||
|
|
<div class="smallexample">
|
||
|
|
<pre class="smallexample">(gdb)
|
||
|
|
-break-watch x
|
||
|
|
^done,wpt={number="2",exp="x"}
|
||
|
|
(gdb)
|
||
|
|
-exec-continue
|
||
|
|
^running
|
||
|
|
(gdb)
|
||
|
|
*stopped,reason="watchpoint-trigger",wpt={number="2",exp="x"},
|
||
|
|
value={old="-268439212",new="55"},
|
||
|
|
frame={func="main",args=[],file="recursive2.c",
|
||
|
|
fullname="/home/foo/bar/recursive2.c",line="5",arch="i386:x86_64"}
|
||
|
|
(gdb)
|
||
|
|
</pre></div>
|
||
|
|
|
||
|
|
<p>Setting a watchpoint on a variable local to a function. <small>GDB</small> will stop
|
||
|
|
the program execution twice: first for the variable changing value, then
|
||
|
|
for the watchpoint going out of scope.
|
||
|
|
</p>
|
||
|
|
<div class="smallexample">
|
||
|
|
<pre class="smallexample">(gdb)
|
||
|
|
-break-watch C
|
||
|
|
^done,wpt={number="5",exp="C"}
|
||
|
|
(gdb)
|
||
|
|
-exec-continue
|
||
|
|
^running
|
||
|
|
(gdb)
|
||
|
|
*stopped,reason="watchpoint-trigger",
|
||
|
|
wpt={number="5",exp="C"},value={old="-276895068",new="3"},
|
||
|
|
frame={func="callee4",args=[],
|
||
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",
|
||
|
|
fullname="/home/foo/bar/devo/gdb/testsuite/gdb.mi/basics.c",line="13",
|
||
|
|
arch="i386:x86_64"}
|
||
|
|
(gdb)
|
||
|
|
-exec-continue
|
||
|
|
^running
|
||
|
|
(gdb)
|
||
|
|
*stopped,reason="watchpoint-scope",wpnum="5",
|
||
|
|
frame={func="callee3",args=[{name="strarg",
|
||
|
|
value="0x11940 \"A string argument.\""}],
|
||
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",
|
||
|
|
fullname="/home/foo/bar/devo/gdb/testsuite/gdb.mi/basics.c",line="18",
|
||
|
|
arch="i386:x86_64"}
|
||
|
|
(gdb)
|
||
|
|
</pre></div>
|
||
|
|
|
||
|
|
<p>Listing breakpoints and watchpoints, at different points in the program
|
||
|
|
execution. Note that once the watchpoint goes out of scope, it is
|
||
|
|
deleted.
|
||
|
|
</p>
|
||
|
|
<div class="smallexample">
|
||
|
|
<pre class="smallexample">(gdb)
|
||
|
|
-break-watch C
|
||
|
|
^done,wpt={number="2",exp="C"}
|
||
|
|
(gdb)
|
||
|
|
-break-list
|
||
|
|
^done,BreakpointTable={nr_rows="2",nr_cols="6",
|
||
|
|
hdr=[{width="3",alignment="-1",col_name="number",colhdr="Num"},
|
||
|
|
{width="14",alignment="-1",col_name="type",colhdr="Type"},
|
||
|
|
{width="4",alignment="-1",col_name="disp",colhdr="Disp"},
|
||
|
|
{width="3",alignment="-1",col_name="enabled",colhdr="Enb"},
|
||
|
|
{width="10",alignment="-1",col_name="addr",colhdr="Address"},
|
||
|
|
{width="40",alignment="2",col_name="what",colhdr="What"}],
|
||
|
|
body=[bkpt={number="1",type="breakpoint",disp="keep",enabled="y",
|
||
|
|
addr="0x00010734",func="callee4",
|
||
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",
|
||
|
|
fullname="/home/foo/devo/gdb/testsuite/gdb.mi/basics.c"line="8",thread-groups=["i1"],
|
||
|
|
times="1"},
|
||
|
|
bkpt={number="2",type="watchpoint",disp="keep",
|
||
|
|
enabled="y",addr="",what="C",thread-groups=["i1"],times="0"}]}
|
||
|
|
(gdb)
|
||
|
|
-exec-continue
|
||
|
|
^running
|
||
|
|
(gdb)
|
||
|
|
*stopped,reason="watchpoint-trigger",wpt={number="2",exp="C"},
|
||
|
|
value={old="-276895068",new="3"},
|
||
|
|
frame={func="callee4",args=[],
|
||
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",
|
||
|
|
fullname="/home/foo/bar/devo/gdb/testsuite/gdb.mi/basics.c",line="13",
|
||
|
|
arch="i386:x86_64"}
|
||
|
|
(gdb)
|
||
|
|
-break-list
|
||
|
|
^done,BreakpointTable={nr_rows="2",nr_cols="6",
|
||
|
|
hdr=[{width="3",alignment="-1",col_name="number",colhdr="Num"},
|
||
|
|
{width="14",alignment="-1",col_name="type",colhdr="Type"},
|
||
|
|
{width="4",alignment="-1",col_name="disp",colhdr="Disp"},
|
||
|
|
{width="3",alignment="-1",col_name="enabled",colhdr="Enb"},
|
||
|
|
{width="10",alignment="-1",col_name="addr",colhdr="Address"},
|
||
|
|
{width="40",alignment="2",col_name="what",colhdr="What"}],
|
||
|
|
body=[bkpt={number="1",type="breakpoint",disp="keep",enabled="y",
|
||
|
|
addr="0x00010734",func="callee4",
|
||
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",
|
||
|
|
fullname="/home/foo/devo/gdb/testsuite/gdb.mi/basics.c",line="8",thread-groups=["i1"],
|
||
|
|
times="1"},
|
||
|
|
bkpt={number="2",type="watchpoint",disp="keep",
|
||
|
|
enabled="y",addr="",what="C",thread-groups=["i1"],times="-5"}]}
|
||
|
|
(gdb)
|
||
|
|
-exec-continue
|
||
|
|
^running
|
||
|
|
^done,reason="watchpoint-scope",wpnum="2",
|
||
|
|
frame={func="callee3",args=[{name="strarg",
|
||
|
|
value="0x11940 \"A string argument.\""}],
|
||
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",
|
||
|
|
fullname="/home/foo/bar/devo/gdb/testsuite/gdb.mi/basics.c",line="18",
|
||
|
|
arch="i386:x86_64"}
|
||
|
|
(gdb)
|
||
|
|
-break-list
|
||
|
|
^done,BreakpointTable={nr_rows="1",nr_cols="6",
|
||
|
|
hdr=[{width="3",alignment="-1",col_name="number",colhdr="Num"},
|
||
|
|
{width="14",alignment="-1",col_name="type",colhdr="Type"},
|
||
|
|
{width="4",alignment="-1",col_name="disp",colhdr="Disp"},
|
||
|
|
{width="3",alignment="-1",col_name="enabled",colhdr="Enb"},
|
||
|
|
{width="10",alignment="-1",col_name="addr",colhdr="Address"},
|
||
|
|
{width="40",alignment="2",col_name="what",colhdr="What"}],
|
||
|
|
body=[bkpt={number="1",type="breakpoint",disp="keep",enabled="y",
|
||
|
|
addr="0x00010734",func="callee4",
|
||
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",
|
||
|
|
fullname="/home/foo/devo/gdb/testsuite/gdb.mi/basics.c",line="8",
|
||
|
|
thread-groups=["i1"],times="1"}]}
|
||
|
|
(gdb)
|
||
|
|
</pre></div>
|
||
|
|
|
||
|
|
|
||
|
|
<hr>
|
||
|
|
<div class="header">
|
||
|
|
<p>
|
||
|
|
Next: <a href="GDB_002fMI-Catchpoint-Commands.html#GDB_002fMI-Catchpoint-Commands" accesskey="n" rel="next">GDB/MI Catchpoint Commands</a>, Previous: <a href="GDB_002fMI-Command-Description-Format.html#GDB_002fMI-Command-Description-Format" accesskey="p" rel="prev">GDB/MI Command Description Format</a>, Up: <a href="GDB_002fMI.html#GDB_002fMI" accesskey="u" rel="up">GDB/MI</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>
|