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