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| <h3 class="section">22.8 Optional Messages about Internal Happenings</h3> |
| |
| <p><a name="index-optional-debugging-messages-1492"></a> |
| <span class="sc">gdb</span> has commands that enable optional debugging messages from |
| various <span class="sc">gdb</span> subsystems; normally these commands are of |
| interest to <span class="sc">gdb</span> maintainers, or when reporting a bug. This |
| section documents those commands. |
| |
| |
| <a name="index-set-exec_002ddone_002ddisplay-1493"></a> |
| <dl><dt><code>set exec-done-display</code><dd>Turns on or off the notification of asynchronous commands' |
| completion. When on, <span class="sc">gdb</span> will print a message when an |
| asynchronous command finishes its execution. The default is off. |
| <a name="index-show-exec_002ddone_002ddisplay-1494"></a><br><dt><code>show exec-done-display</code><dd>Displays the current setting of asynchronous command completion |
| notification. |
| <a name="index-set-debug-1495"></a><a name="index-gdbarch-debugging-info-1496"></a><a name="index-architecture-debugging-info-1497"></a><br><dt><code>set debug arch</code><dd>Turns on or off display of gdbarch debugging info. The default is off |
| <a name="index-show-debug-1498"></a><br><dt><code>show debug arch</code><dd>Displays the current state of displaying gdbarch debugging info. |
| <br><dt><code>set debug aix-thread</code><dd><a name="index-AIX-threads-1499"></a>Display debugging messages about inner workings of the AIX thread |
| module. |
| <br><dt><code>show debug aix-thread</code><dd>Show the current state of AIX thread debugging info display. |
| <br><dt><code>set debug dwarf2-die</code><dd><a name="index-DWARF2-DIEs-1500"></a>Dump DWARF2 DIEs after they are read in. |
| The value is the number of nesting levels to print. |
| A value of zero turns off the display. |
| <br><dt><code>show debug dwarf2-die</code><dd>Show the current state of DWARF2 DIE debugging. |
| <br><dt><code>set debug displaced</code><dd><a name="index-displaced-stepping-debugging-info-1501"></a>Turns on or off display of <span class="sc">gdb</span> debugging info for the |
| displaced stepping support. The default is off. |
| <br><dt><code>show debug displaced</code><dd>Displays the current state of displaying <span class="sc">gdb</span> debugging info |
| related to displaced stepping. |
| <br><dt><code>set debug event</code><dd><a name="index-event-debugging-info-1502"></a>Turns on or off display of <span class="sc">gdb</span> event debugging info. The |
| default is off. |
| <br><dt><code>show debug event</code><dd>Displays the current state of displaying <span class="sc">gdb</span> event debugging |
| info. |
| <br><dt><code>set debug expression</code><dd><a name="index-expression-debugging-info-1503"></a>Turns on or off display of debugging info about <span class="sc">gdb</span> |
| expression parsing. The default is off. |
| <br><dt><code>show debug expression</code><dd>Displays the current state of displaying debugging info about |
| <span class="sc">gdb</span> expression parsing. |
| <br><dt><code>set debug frame</code><dd><a name="index-frame-debugging-info-1504"></a>Turns on or off display of <span class="sc">gdb</span> frame debugging info. The |
| default is off. |
| <br><dt><code>show debug frame</code><dd>Displays the current state of displaying <span class="sc">gdb</span> frame debugging |
| info. |
| <br><dt><code>set debug gnu-nat</code><dd><a name="index-g_t_0040sc_007bgnu_007d_002fHurd-debug-messages-1505"></a>Turns on or off debugging messages from the <span class="sc">gnu</span>/Hurd debug support. |
| <br><dt><code>show debug gnu-nat</code><dd>Show the current state of <span class="sc">gnu</span>/Hurd debugging messages. |
| <br><dt><code>set debug infrun</code><dd><a name="index-inferior-debugging-info-1506"></a>Turns on or off display of <span class="sc">gdb</span> debugging info for running the inferior. |
| The default is off. <samp><span class="file">infrun.c</span></samp> contains GDB's runtime state machine used |
| for implementing operations such as single-stepping the inferior. |
| <br><dt><code>show debug infrun</code><dd>Displays the current state of <span class="sc">gdb</span> inferior debugging. |
| <br><dt><code>set debug lin-lwp</code><dd><a name="index-g_t_0040sc_007bgnu_007d_002fLinux-LWP-debug-messages-1507"></a><a name="index-Linux-lightweight-processes-1508"></a>Turns on or off debugging messages from the Linux LWP debug support. |
| <br><dt><code>show debug lin-lwp</code><dd>Show the current state of Linux LWP debugging messages. |
| <br><dt><code>set debug lin-lwp-async</code><dd><a name="index-g_t_0040sc_007bgnu_007d_002fLinux-LWP-async-debug-messages-1509"></a><a name="index-Linux-lightweight-processes-1510"></a>Turns on or off debugging messages from the Linux LWP async debug support. |
| <br><dt><code>show debug lin-lwp-async</code><dd>Show the current state of Linux LWP async debugging messages. |
| <br><dt><code>set debug observer</code><dd><a name="index-observer-debugging-info-1511"></a>Turns on or off display of <span class="sc">gdb</span> observer debugging. This |
| includes info such as the notification of observable events. |
| <br><dt><code>show debug observer</code><dd>Displays the current state of observer debugging. |
| <br><dt><code>set debug overload</code><dd><a name="index-C_0040t_007b_002b_002b_007d-overload-debugging-info-1512"></a>Turns on or off display of <span class="sc">gdb</span> C<tt>++</tt> overload debugging |
| info. This includes info such as ranking of functions, etc. The default |
| is off. |
| <br><dt><code>show debug overload</code><dd>Displays the current state of displaying <span class="sc">gdb</span> C<tt>++</tt> overload |
| debugging info. |
| <a name="index-expression-parser_002c-debugging-info-1513"></a><a name="index-debug-expression-parser-1514"></a><br><dt><code>set debug parser</code><dd>Turns on or off the display of expression parser debugging output. |
| Internally, this sets the <code>yydebug</code> variable in the expression |
| parser. See <a href="../bison/Tracing.html#Tracing">Tracing Your Parser</a>, for |
| details. The default is off. |
| <br><dt><code>show debug parser</code><dd>Show the current state of expression parser debugging. |
| <a name="index-packets_002c-reporting-on-stdout-1515"></a><a name="index-serial-connections_002c-debugging-1516"></a><a name="index-debug-remote-protocol-1517"></a><a name="index-remote-protocol-debugging-1518"></a><a name="index-display-remote-packets-1519"></a><br><dt><code>set debug remote</code><dd>Turns on or off display of reports on all packets sent back and forth across |
| the serial line to the remote machine. The info is printed on the |
| <span class="sc">gdb</span> standard output stream. The default is off. |
| <br><dt><code>show debug remote</code><dd>Displays the state of display of remote packets. |
| <br><dt><code>set debug serial</code><dd>Turns on or off display of <span class="sc">gdb</span> serial debugging info. The |
| default is off. |
| <br><dt><code>show debug serial</code><dd>Displays the current state of displaying <span class="sc">gdb</span> serial debugging |
| info. |
| <br><dt><code>set debug solib-frv</code><dd><a name="index-FR_002dV-shared_002dlibrary-debugging-1520"></a>Turns on or off debugging messages for FR-V shared-library code. |
| <br><dt><code>show debug solib-frv</code><dd>Display the current state of FR-V shared-library code debugging |
| messages. |
| <br><dt><code>set debug target</code><dd><a name="index-target-debugging-info-1521"></a>Turns on or off display of <span class="sc">gdb</span> target debugging info. This info |
| includes what is going on at the target level of GDB, as it happens. The |
| default is 0. Set it to 1 to track events, and to 2 to also track the |
| value of large memory transfers. Changes to this flag do not take effect |
| until the next time you connect to a target or use the <code>run</code> command. |
| <br><dt><code>show debug target</code><dd>Displays the current state of displaying <span class="sc">gdb</span> target debugging |
| info. |
| <br><dt><code>set debug timestamp</code><dd><a name="index-timestampping-debugging-info-1522"></a>Turns on or off display of timestamps with <span class="sc">gdb</span> debugging info. |
| When enabled, seconds and microseconds are displayed before each debugging |
| message. |
| <br><dt><code>show debug timestamp</code><dd>Displays the current state of displaying timestamps with <span class="sc">gdb</span> |
| debugging info. |
| <br><dt><code>set debugvarobj</code><dd><a name="index-variable-object-debugging-info-1523"></a>Turns on or off display of <span class="sc">gdb</span> variable object debugging |
| info. The default is off. |
| <br><dt><code>show debugvarobj</code><dd>Displays the current state of displaying <span class="sc">gdb</span> variable object |
| debugging info. |
| <br><dt><code>set debug xml</code><dd><a name="index-XML-parser-debugging-1524"></a>Turns on or off debugging messages for built-in XML parsers. |
| <br><dt><code>show debug xml</code><dd>Displays the current state of XML debugging messages. |
| </dl> |
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