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230 lines
9.1 KiB
HTML
4 years ago
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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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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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<!-- 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 Information (Debugging with GDB)</title>
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<meta name="description" content="GDB/MI Breakpoint Information (Debugging with GDB)">
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<meta name="keywords" content="GDB/MI Breakpoint Information (Debugging with GDB)">
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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-Output-Records.html#GDB_002fMI-Output-Records" rel="up" title="GDB/MI Output Records">
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<link href="GDB_002fMI-Frame-Information.html#GDB_002fMI-Frame-Information" rel="next" title="GDB/MI Frame Information">
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</head>
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<body lang="en">
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<a name="GDB_002fMI-Breakpoint-Information"></a>
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<div class="header">
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<p>
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Next: <a href="GDB_002fMI-Frame-Information.html#GDB_002fMI-Frame-Information" accesskey="n" rel="next">GDB/MI Frame Information</a>, Previous: <a href="GDB_002fMI-Async-Records.html#GDB_002fMI-Async-Records" accesskey="p" rel="prev">GDB/MI Async Records</a>, Up: <a href="GDB_002fMI-Output-Records.html#GDB_002fMI-Output-Records" accesskey="u" rel="up">GDB/MI Output Records</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-Information-1"></a>
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<h4 class="subsection">27.5.4 <small>GDB/MI</small> Breakpoint Information</h4>
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<p>When <small>GDB</small> reports information about a breakpoint, a
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tracepoint, a watchpoint, or a catchpoint, it uses a tuple with the
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following fields:
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</p>
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<dl compact="compact">
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<dt><code>number</code></dt>
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<dd><p>The breakpoint number. For a breakpoint that represents one location
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of a multi-location breakpoint, this will be a dotted pair, like
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‘<samp>1.2</samp>’.
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</p>
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</dd>
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<dt><code>type</code></dt>
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<dd><p>The type of the breakpoint. For ordinary breakpoints this will be
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‘<samp>breakpoint</samp>’, but many values are possible.
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</p>
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</dd>
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<dt><code>catch-type</code></dt>
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<dd><p>If the type of the breakpoint is ‘<samp>catchpoint</samp>’, then this
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indicates the exact type of catchpoint.
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</p>
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</dd>
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<dt><code>disp</code></dt>
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<dd><p>This is the breakpoint disposition—either ‘<samp>del</samp>’, meaning that
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the breakpoint will be deleted at the next stop, or ‘<samp>keep</samp>’,
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meaning that the breakpoint will not be deleted.
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</p>
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</dd>
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<dt><code>enabled</code></dt>
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<dd><p>This indicates whether the breakpoint is enabled, in which case the
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value is ‘<samp>y</samp>’, or disabled, in which case the value is ‘<samp>n</samp>’.
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Note that this is not the same as the field <code>enable</code>.
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</p>
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</dd>
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<dt><code>addr</code></dt>
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<dd><p>The address of the breakpoint. This may be a hexidecimal number,
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giving the address; or the string ‘<samp><PENDING></samp>’, for a pending
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breakpoint; or the string ‘<samp><MULTIPLE></samp>’, for a breakpoint with
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multiple locations. This field will not be present if no address can
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be determined. For example, a watchpoint does not have an address.
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</p>
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</dd>
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<dt><code>func</code></dt>
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<dd><p>If known, the function in which the breakpoint appears.
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If not known, this field is not present.
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</p>
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</dd>
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<dt><code>filename</code></dt>
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<dd><p>The name of the source file which contains this function, if known.
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If not known, this field is not present.
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</p>
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</dd>
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<dt><code>fullname</code></dt>
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<dd><p>The full file name of the source file which contains this function, if
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known. If not known, this field is not present.
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</p>
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</dd>
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<dt><code>line</code></dt>
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<dd><p>The line number at which this breakpoint appears, if known.
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If not known, this field is not present.
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</p>
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</dd>
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<dt><code>at</code></dt>
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<dd><p>If the source file is not known, this field may be provided. If
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provided, this holds the address of the breakpoint, possibly followed
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by a symbol name.
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</p>
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</dd>
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<dt><code>pending</code></dt>
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<dd><p>If this breakpoint is pending, this field is present and holds the
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text used to set the breakpoint, as entered by the user.
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</p>
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</dd>
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<dt><code>evaluated-by</code></dt>
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<dd><p>Where this breakpoint’s condition is evaluated, either ‘<samp>host</samp>’ or
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‘<samp>target</samp>’.
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</p>
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</dd>
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<dt><code>thread</code></dt>
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<dd><p>If this is a thread-specific breakpoint, then this identifies the
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thread in which the breakpoint can trigger.
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</p>
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</dd>
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<dt><code>task</code></dt>
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<dd><p>If this breakpoint is restricted to a particular Ada task, then this
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field will hold the task identifier.
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</p>
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</dd>
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<dt><code>cond</code></dt>
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<dd><p>If the breakpoint is conditional, this is the condition expression.
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</p>
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</dd>
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<dt><code>ignore</code></dt>
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<dd><p>The ignore count of the breakpoint.
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</p>
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</dd>
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<dt><code>enable</code></dt>
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<dd><p>The enable count of the breakpoint.
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</p>
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</dd>
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<dt><code>traceframe-usage</code></dt>
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<dd><p>FIXME.
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</p>
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</dd>
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<dt><code>static-tracepoint-marker-string-id</code></dt>
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<dd><p>For a static tracepoint, the name of the static tracepoint marker.
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</p>
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</dd>
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<dt><code>mask</code></dt>
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<dd><p>For a masked watchpoint, this is the mask.
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</p>
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</dd>
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<dt><code>pass</code></dt>
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<dd><p>A tracepoint’s pass count.
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</p>
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</dd>
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<dt><code>original-location</code></dt>
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<dd><p>The location of the breakpoint as originally specified by the user.
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This field is optional.
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</p>
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</dd>
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<dt><code>times</code></dt>
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<dd><p>The number of times the breakpoint has been hit.
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</p>
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</dd>
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<dt><code>installed</code></dt>
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<dd><p>This field is only given for tracepoints. This is either ‘<samp>y</samp>’,
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meaning that the tracepoint is installed, or ‘<samp>n</samp>’, meaning that it
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is not.
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</p>
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</dd>
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<dt><code>what</code></dt>
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<dd><p>Some extra data, the exact contents of which are type-dependent.
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</p>
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</dd>
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</dl>
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<p>For example, here is what the output of <code>-break-insert</code>
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(see <a href="GDB_002fMI-Breakpoint-Commands.html#GDB_002fMI-Breakpoint-Commands">GDB/MI Breakpoint Commands</a>) might be:
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</p>
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<div class="smallexample">
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<pre class="smallexample">-> -break-insert main
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<- ^done,bkpt={number="1",type="breakpoint",disp="keep",
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enabled="y",addr="0x08048564",func="main",file="myprog.c",
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fullname="/home/nickrob/myprog.c",line="68",thread-groups=["i1"],
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times="0"}
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<- (gdb)
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</pre></div>
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<hr>
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<div class="header">
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<p>
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Next: <a href="GDB_002fMI-Frame-Information.html#GDB_002fMI-Frame-Information" accesskey="n" rel="next">GDB/MI Frame Information</a>, Previous: <a href="GDB_002fMI-Async-Records.html#GDB_002fMI-Async-Records" accesskey="p" rel="prev">GDB/MI Async Records</a>, Up: <a href="GDB_002fMI-Output-Records.html#GDB_002fMI-Output-Records" accesskey="u" rel="up">GDB/MI Output Records</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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