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| <a name="GDB_002fMI-Breakpoint-Commands"></a> |
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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> |
| </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 <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). |
| </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="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> |
| <ul> |
| <li> function |
| </li><li> filename:linenum |
| </li><li> filename:function |
| </li><li> *address |
| </li></ul> |
| |
| <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 specified <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 specified, <var>location</var>, can be one of: |
| </p> |
| <ul> |
| <li> <var>function</var> |
| </li><li> <var>filename</var>:<var>linenum</var> |
| </li><li> <var>filename</var>:function |
| </li><li> *<var>address</var> |
| </li></ul> |
| |
| <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 specified <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"} |
| (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"} |
| (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"} |
| (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"} |
| (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"} |
| (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> |
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