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diff --git a/share/doc/gdb/GDB_002fMI-Breakpoint-Commands.html b/share/doc/gdb/GDB_002fMI-Breakpoint-Commands.html new file mode 100644 index 0000000..adb105c --- /dev/null +++ b/share/doc/gdb/GDB_002fMI-Breakpoint-Commands.html @@ -0,0 +1,853 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 1988-2023 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 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>Debugging with GDB: GDB/MI Breakpoint Commands</title> + +<meta name="description" content="Debugging with GDB: GDB/MI Breakpoint Commands"> +<meta name="keywords" content="Debugging with GDB: GDB/MI Breakpoint 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="GDB_002fMI.html#GDB_002fMI" rel="up" title="GDB/MI"> +<link href="GDB_002fMI-Catchpoint-Commands.html#GDB_002fMI-Catchpoint-Commands" rel="next" title="GDB/MI Catchpoint Commands"> +<link href="GDB_002fMI-Command-Description-Format.html#GDB_002fMI-Command-Description-Format" rel="previous" title="GDB/MI Command Description Format"> +<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="GDB_002fMI-Breakpoint-Commands"></a> +<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="previous">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> +<hr> +<a name="GDB_002fMI-Breakpoint-Commands-1"></a> +<h3 class="section">27.8 <small>GDB/MI</small> Breakpoint Commands</h3> + +<a name="index-breakpoint-commands-for-GDB_002fMI"></a> +<a name="index-GDB_002fMI_002c-breakpoint-commands"></a> +<p>This section documents <small>GDB/MI</small> commands for manipulating +breakpoints. +</p> +<a name="The-_002dbreak_002dafter-Command"></a> +<h4 class="subheading">The <code>-break-after</code> Command</h4> +<a name="index-_002dbreak_002dafter"></a> + +<a name="Synopsis-1"></a> +<h4 class="subsubheading">Synopsis</h4> + +<div class="smallexample"> +<pre class="smallexample"> -break-after <var>number</var> <var>count</var> +</pre></div> + +<p>The breakpoint number <var>number</var> is not in effect until it has been +hit <var>count</var> times. To see how this is reflected in the output of +the ‘<samp>-break-list</samp>’ command, see the description of the +‘<samp>-break-list</samp>’ command below. +</p> +<a name="GDB-Command-1"></a> +<h4 class="subsubheading"><small>GDB</small> Command</h4> + +<p>The corresponding <small>GDB</small> command is ‘<samp>ignore</samp>’. +</p> +<a name="Example-1"></a> +<h4 class="subsubheading">Example</h4> + +<div class="smallexample"> +<pre class="smallexample">(gdb) +-break-insert main +^done,bkpt={number="1",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) +-break-after 1 3 +~ +^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="1",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",ignore="3"}]} +(gdb) +</pre></div> + + +<a name="The-_002dbreak_002dcommands-Command"></a> +<h4 class="subheading">The <code>-break-commands</code> Command</h4> +<a name="index-_002dbreak_002dcommands"></a> + +<a name="Synopsis-2"></a> +<h4 class="subsubheading">Synopsis</h4> + +<div class="smallexample"> +<pre class="smallexample"> -break-commands <var>number</var> [ <var>command1</var> ... <var>commandN</var> ] +</pre></div> + +<p>Specifies the CLI commands that should be executed when breakpoint +<var>number</var> is hit. The parameters <var>command1</var> to <var>commandN</var> +are the commands. If no command is specified, any previously-set +commands are cleared. See <a href="Break-Commands.html#Break-Commands">Break Commands</a>. Typical use of this +functionality is tracing a program, that is, printing of values of +some variables whenever breakpoint is hit and then continuing. +</p> +<a name="GDB-Command-2"></a> +<h4 class="subsubheading"><small>GDB</small> Command</h4> + +<p>The corresponding <small>GDB</small> command is ‘<samp>commands</samp>’. +</p> +<a name="Example-2"></a> +<h4 class="subsubheading">Example</h4> + +<div class="smallexample"> +<pre class="smallexample">(gdb) +-break-insert main +^done,bkpt={number="1",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) +-break-commands 1 "print v" "continue" +^done +(gdb) +</pre></div> + +<a name="The-_002dbreak_002dcondition-Command"></a> +<h4 class="subheading">The <code>-break-condition</code> Command</h4> +<a name="index-_002dbreak_002dcondition"></a> + +<a name="Synopsis-3"></a> +<h4 class="subsubheading">Synopsis</h4> + +<div class="smallexample"> +<pre class="smallexample"> -break-condition [ --force ] <var>number</var> [ <var>expr</var> ] +</pre></div> + +<p>Breakpoint <var>number</var> will stop the program only if the condition in +<var>expr</var> is true. The condition becomes part of the +‘<samp>-break-list</samp>’ output (see the description of the ‘<samp>-break-list</samp>’ +command below). If the ‘<samp>--force</samp>’ flag is passed, the condition +is forcibly defined even when it is invalid for all locations of +breakpoint <var>number</var>. If the <var>expr</var> argument is omitted, +breakpoint <var>number</var> becomes unconditional. +</p> +<a name="GDB-Command-3"></a> +<h4 class="subsubheading"><small>GDB</small> Command</h4> + +<p>The corresponding <small>GDB</small> command is ‘<samp>condition</samp>’. +</p> +<a name="Example-3"></a> +<h4 class="subsubheading">Example</h4> + +<div class="smallexample"> +<pre class="smallexample">(gdb) +-break-condition 1 1 +^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="1",type="breakpoint",disp="keep",enabled="y", +addr="0x000100d0",func="main",file="hello.c",fullname="/home/foo/hello.c", +line="5",cond="1",thread-groups=["i1"],times="0",ignore="3"}]} +(gdb) +</pre></div> + +<a name="The-_002dbreak_002ddelete-Command"></a> +<h4 class="subheading">The <code>-break-delete</code> Command</h4> +<a name="index-_002dbreak_002ddelete"></a> + +<a name="Synopsis-4"></a> +<h4 class="subsubheading">Synopsis</h4> + +<div class="smallexample"> +<pre class="smallexample"> -break-delete ( <var>breakpoint</var> )+ +</pre></div> + +<p>Delete the breakpoint(s) whose number(s) are specified in the argument +list. This is obviously reflected in the breakpoint list. +</p> +<a name="GDB-Command-4"></a> +<h4 class="subsubheading"><small>GDB</small> Command</h4> + +<p>The corresponding <small>GDB</small> command is ‘<samp>delete</samp>’. +</p> +<a name="Example-4"></a> +<h4 class="subsubheading">Example</h4> + +<div class="smallexample"> +<pre class="smallexample">(gdb) +-break-delete 1 +^done +(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_002ddisable-Command"></a> +<h4 class="subheading">The <code>-break-disable</code> Command</h4> +<a name="index-_002dbreak_002ddisable"></a> + +<a name="Synopsis-5"></a> +<h4 class="subsubheading">Synopsis</h4> + +<div class="smallexample"> +<pre class="smallexample"> -break-disable ( <var>breakpoint</var> )+ +</pre></div> + +<p>Disable the named <var>breakpoint</var>(s). The field ‘<samp>enabled</samp>’ in the +break list is now set to ‘<samp>n</samp>’ for the named <var>breakpoint</var>(s). +</p> +<a name="GDB-Command-5"></a> +<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"> +<pre class="smallexample">(gdb) +-break-disable 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="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 ] [ --qualified ] + [ -c <var>condition</var> ] [ --force-condition ] [ -i <var>ignore-count</var> ] + [ -p <var>thread-id</var> ] [ <var>locspec</var> ] +</pre></div> + +<p>If specified, <var>locspec</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>locspec</var> cannot be resolved (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>locspec</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>--force-condition</samp>’</dt> +<dd><p>Forcibly define the breakpoint even if the condition is invalid at +all of the breakpoint locations. +</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> +<dt>‘<samp>--qualified</samp>’</dt> +<dd><p>This option makes <small>GDB</small> interpret a function name specified as +a complete fully-qualified name. +</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 ] [ --qualified ] + [ -c <var>condition</var> ] [--force-condition] [ -i <var>ignore-count</var> ] + [ -p <var>thread-id</var> ] [ <var>locspec</var> ] [ <var>format</var> ] + [ <var>argument</var> ] +</pre></div> + +<p>If supplied, <var>locspec</var> and <code>--qualified</code> 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>locspec</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>locspec</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>--force-condition</samp>’</dt> +<dd><p>Forcibly define the breakpoint even if the condition is invalid at +all of the breakpoint locations. +</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="previous">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> |