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| <title>Debugging with GDB: Debugging Output</title> |
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| <a name="Debugging-Output"></a> |
| <div class="header"> |
| <p> |
| Next: <a href="Other-Misc-Settings.html#Other-Misc-Settings" accesskey="n" rel="next">Other Misc Settings</a>, Previous: <a href="Messages_002fWarnings.html#Messages_002fWarnings" accesskey="p" rel="prev">Messages/Warnings</a>, Up: <a href="Controlling-GDB.html#Controlling-GDB" accesskey="u" rel="up">Controlling GDB</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="Optional-Messages-about-Internal-Happenings"></a> |
| <h3 class="section">22.9 Optional Messages about Internal Happenings</h3> |
| <a name="index-optional-debugging-messages"></a> |
| |
| <p><small>GDB</small> has commands that enable optional debugging messages from |
| various <small>GDB</small> subsystems; normally these commands are of |
| interest to <small>GDB</small> maintainers, or when reporting a bug. This |
| section documents those commands. |
| </p> |
| <dl compact="compact"> |
| <dd><a name="index-set-exec_002ddone_002ddisplay"></a> |
| </dd> |
| <dt><code>set exec-done-display</code></dt> |
| <dd><p>Turns on or off the notification of asynchronous commands’ |
| completion. When on, <small>GDB</small> will print a message when an |
| asynchronous command finishes its execution. The default is off. |
| <a name="index-show-exec_002ddone_002ddisplay"></a> |
| </p></dd> |
| <dt><code>show exec-done-display</code></dt> |
| <dd><p>Displays the current setting of asynchronous command completion |
| notification. |
| <a name="index-set-debug"></a> |
| <a name="index-ARM-AArch64"></a> |
| </p></dd> |
| <dt><code>set debug aarch64</code></dt> |
| <dd><p>Turns on or off display of debugging messages related to ARM AArch64. |
| The default is off. |
| <a name="index-show-debug"></a> |
| </p></dd> |
| <dt><code>show debug aarch64</code></dt> |
| <dd><p>Displays the current state of displaying debugging messages related to |
| ARM AArch64. |
| <a name="index-gdbarch-debugging-info"></a> |
| <a name="index-architecture-debugging-info"></a> |
| </p></dd> |
| <dt><code>set debug arch</code></dt> |
| <dd><p>Turns on or off display of gdbarch debugging info. The default is off |
| </p></dd> |
| <dt><code>show debug arch</code></dt> |
| <dd><p>Displays the current state of displaying gdbarch debugging info. |
| </p></dd> |
| <dt><code>set debug aix-solib</code></dt> |
| <dd><a name="index-AIX-shared-library-debugging"></a> |
| <p>Control display of debugging messages from the AIX shared library |
| support module. The default is off. |
| </p></dd> |
| <dt><code>show debug aix-thread</code></dt> |
| <dd><p>Show the current state of displaying AIX shared library debugging messages. |
| </p></dd> |
| <dt><code>set debug aix-thread</code></dt> |
| <dd><a name="index-AIX-threads"></a> |
| <p>Display debugging messages about inner workings of the AIX thread |
| module. |
| </p></dd> |
| <dt><code>show debug aix-thread</code></dt> |
| <dd><p>Show the current state of AIX thread debugging info display. |
| </p></dd> |
| <dt><code>set debug check-physname</code></dt> |
| <dd><a name="index-physname"></a> |
| <p>Check the results of the “physname” computation. When reading DWARF |
| debugging information for C<tt>++</tt>, <small>GDB</small> attempts to compute |
| each entity’s name. <small>GDB</small> can do this computation in two |
| different ways, depending on exactly what information is present. |
| When enabled, this setting causes <small>GDB</small> to compute the names |
| both ways and display any discrepancies. |
| </p></dd> |
| <dt><code>show debug check-physname</code></dt> |
| <dd><p>Show the current state of “physname” checking. |
| </p></dd> |
| <dt><code>set debug coff-pe-read</code></dt> |
| <dd><a name="index-COFF_002fPE-exported-symbols"></a> |
| <p>Control display of debugging messages related to reading of COFF/PE |
| exported symbols. The default is off. |
| </p></dd> |
| <dt><code>show debug coff-pe-read</code></dt> |
| <dd><p>Displays the current state of displaying debugging messages related to |
| reading of COFF/PE exported symbols. |
| </p></dd> |
| <dt><code>set debug dwarf-die</code></dt> |
| <dd><a name="index-DWARF-DIEs"></a> |
| <p>Dump DWARF DIEs after they are read in. |
| The value is the number of nesting levels to print. |
| A value of zero turns off the display. |
| </p></dd> |
| <dt><code>show debug dwarf-die</code></dt> |
| <dd><p>Show the current state of DWARF DIE debugging. |
| </p></dd> |
| <dt><code>set debug dwarf-line</code></dt> |
| <dd><a name="index-DWARF-Line-Tables"></a> |
| <p>Turns on or off display of debugging messages related to reading |
| DWARF line tables. The default is 0 (off). |
| A value of 1 provides basic information. |
| A value greater than 1 provides more verbose information. |
| </p></dd> |
| <dt><code>show debug dwarf-line</code></dt> |
| <dd><p>Show the current state of DWARF line table debugging. |
| </p></dd> |
| <dt><code>set debug dwarf-read</code></dt> |
| <dd><a name="index-DWARF-Reading"></a> |
| <p>Turns on or off display of debugging messages related to reading |
| DWARF debug info. The default is 0 (off). |
| A value of 1 provides basic information. |
| A value greater than 1 provides more verbose information. |
| </p></dd> |
| <dt><code>show debug dwarf-read</code></dt> |
| <dd><p>Show the current state of DWARF reader debugging. |
| </p></dd> |
| <dt><code>set debug displaced</code></dt> |
| <dd><a name="index-displaced-stepping-debugging-info"></a> |
| <p>Turns on or off display of <small>GDB</small> debugging info for the |
| displaced stepping support. The default is off. |
| </p></dd> |
| <dt><code>show debug displaced</code></dt> |
| <dd><p>Displays the current state of displaying <small>GDB</small> debugging info |
| related to displaced stepping. |
| </p></dd> |
| <dt><code>set debug event</code></dt> |
| <dd><a name="index-event-debugging-info"></a> |
| <p>Turns on or off display of <small>GDB</small> event debugging info. The |
| default is off. |
| </p></dd> |
| <dt><code>show debug event</code></dt> |
| <dd><p>Displays the current state of displaying <small>GDB</small> event debugging |
| info. |
| </p></dd> |
| <dt><code>set debug expression</code></dt> |
| <dd><a name="index-expression-debugging-info"></a> |
| <p>Turns on or off display of debugging info about <small>GDB</small> |
| expression parsing. The default is off. |
| </p></dd> |
| <dt><code>show debug expression</code></dt> |
| <dd><p>Displays the current state of displaying debugging info about |
| <small>GDB</small> expression parsing. |
| </p></dd> |
| <dt><code>set debug frame</code></dt> |
| <dd><a name="index-frame-debugging-info"></a> |
| <p>Turns on or off display of <small>GDB</small> frame debugging info. The |
| default is off. |
| </p></dd> |
| <dt><code>show debug frame</code></dt> |
| <dd><p>Displays the current state of displaying <small>GDB</small> frame debugging |
| info. |
| </p></dd> |
| <dt><code>set debug gnu-nat</code></dt> |
| <dd><a name="index-GNU_002fHurd-debug-messages"></a> |
| <p>Turns on or off debugging messages from the <small>GNU</small>/Hurd debug support. |
| </p></dd> |
| <dt><code>show debug gnu-nat</code></dt> |
| <dd><p>Show the current state of <small>GNU</small>/Hurd debugging messages. |
| </p></dd> |
| <dt><code>set debug infrun</code></dt> |
| <dd><a name="index-inferior-debugging-info"></a> |
| <p>Turns on or off display of <small>GDB</small> debugging info for running the inferior. |
| The default is off. <samp>infrun.c</samp> contains GDB’s runtime state machine used |
| for implementing operations such as single-stepping the inferior. |
| </p></dd> |
| <dt><code>show debug infrun</code></dt> |
| <dd><p>Displays the current state of <small>GDB</small> inferior debugging. |
| </p></dd> |
| <dt><code>set debug jit</code></dt> |
| <dd><a name="index-just_002din_002dtime-compilation_002c-debugging-messages"></a> |
| <p>Turns on or off debugging messages from JIT debug support. |
| </p></dd> |
| <dt><code>show debug jit</code></dt> |
| <dd><p>Displays the current state of <small>GDB</small> JIT debugging. |
| </p></dd> |
| <dt><code>set debug lin-lwp</code></dt> |
| <dd><a name="index-GNU_002fLinux-LWP-debug-messages"></a> |
| <a name="index-Linux-lightweight-processes"></a> |
| <p>Turns on or off debugging messages from the Linux LWP debug support. |
| </p></dd> |
| <dt><code>show debug lin-lwp</code></dt> |
| <dd><p>Show the current state of Linux LWP debugging messages. |
| </p></dd> |
| <dt><code>set debug linux-namespaces</code></dt> |
| <dd><a name="index-GNU_002fLinux-namespaces-debug-messages"></a> |
| <p>Turns on or off debugging messages from the Linux namespaces debug support. |
| </p></dd> |
| <dt><code>show debug linux-namespaces</code></dt> |
| <dd><p>Show the current state of Linux namespaces debugging messages. |
| </p></dd> |
| <dt><code>set debug mach-o</code></dt> |
| <dd><a name="index-Mach_002dO-symbols-processing"></a> |
| <p>Control display of debugging messages related to Mach-O symbols |
| processing. The default is off. |
| </p></dd> |
| <dt><code>show debug mach-o</code></dt> |
| <dd><p>Displays the current state of displaying debugging messages related to |
| reading of COFF/PE exported symbols. |
| </p></dd> |
| <dt><code>set debug notification</code></dt> |
| <dd><a name="index-remote-async-notification-debugging-info"></a> |
| <p>Turns on or off debugging messages about remote async notification. |
| The default is off. |
| </p></dd> |
| <dt><code>show debug notification</code></dt> |
| <dd><p>Displays the current state of remote async notification debugging messages. |
| </p></dd> |
| <dt><code>set debug observer</code></dt> |
| <dd><a name="index-observer-debugging-info"></a> |
| <p>Turns on or off display of <small>GDB</small> observer debugging. This |
| includes info such as the notification of observable events. |
| </p></dd> |
| <dt><code>show debug observer</code></dt> |
| <dd><p>Displays the current state of observer debugging. |
| </p></dd> |
| <dt><code>set debug overload</code></dt> |
| <dd><a name="index-C_002b_002b-overload-debugging-info"></a> |
| <p>Turns on or off display of <small>GDB</small> C<tt>++</tt> overload debugging |
| info. This includes info such as ranking of functions, etc. The default |
| is off. |
| </p></dd> |
| <dt><code>show debug overload</code></dt> |
| <dd><p>Displays the current state of displaying <small>GDB</small> C<tt>++</tt> overload |
| debugging info. |
| <a name="index-expression-parser_002c-debugging-info"></a> |
| <a name="index-debug-expression-parser"></a> |
| </p></dd> |
| <dt><code>set debug parser</code></dt> |
| <dd><p>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="http://www.gnu.org/software/bison/manual/html_node/Tracing.html#Tracing">Tracing Your Parser</a> in <cite>Bison</cite>, for |
| details. The default is off. |
| </p></dd> |
| <dt><code>show debug parser</code></dt> |
| <dd><p>Show the current state of expression parser debugging. |
| <a name="index-packets_002c-reporting-on-stdout"></a> |
| <a name="index-serial-connections_002c-debugging"></a> |
| <a name="index-debug-remote-protocol"></a> |
| <a name="index-remote-protocol-debugging"></a> |
| <a name="index-display-remote-packets"></a> |
| </p></dd> |
| <dt><code>set debug remote</code></dt> |
| <dd><p>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 |
| <small>GDB</small> standard output stream. The default is off. |
| </p></dd> |
| <dt><code>show debug remote</code></dt> |
| <dd><p>Displays the state of display of remote packets. |
| </p></dd> |
| <dt><code>set debug serial</code></dt> |
| <dd><p>Turns on or off display of <small>GDB</small> serial debugging info. The |
| default is off. |
| </p></dd> |
| <dt><code>show debug serial</code></dt> |
| <dd><p>Displays the current state of displaying <small>GDB</small> serial debugging |
| info. |
| </p></dd> |
| <dt><code>set debug solib-frv</code></dt> |
| <dd><a name="index-FR_002dV-shared_002dlibrary-debugging"></a> |
| <p>Turns on or off debugging messages for FR-V shared-library code. |
| </p></dd> |
| <dt><code>show debug solib-frv</code></dt> |
| <dd><p>Display the current state of FR-V shared-library code debugging |
| messages. |
| </p></dd> |
| <dt><code>set debug symbol-lookup</code></dt> |
| <dd><a name="index-symbol-lookup"></a> |
| <p>Turns on or off display of debugging messages related to symbol lookup. |
| The default is 0 (off). |
| A value of 1 provides basic information. |
| A value greater than 1 provides more verbose information. |
| </p></dd> |
| <dt><code>show debug symbol-lookup</code></dt> |
| <dd><p>Show the current state of symbol lookup debugging messages. |
| </p></dd> |
| <dt><code>set debug symfile</code></dt> |
| <dd><a name="index-symbol-file-functions"></a> |
| <p>Turns on or off display of debugging messages related to symbol file functions. |
| The default is off. See <a href="Files.html#Files">Files</a>. |
| </p></dd> |
| <dt><code>show debug symfile</code></dt> |
| <dd><p>Show the current state of symbol file debugging messages. |
| </p></dd> |
| <dt><code>set debug symtab-create</code></dt> |
| <dd><a name="index-symbol-table-creation"></a> |
| <p>Turns on or off display of debugging messages related to symbol table creation. |
| The default is 0 (off). |
| A value of 1 provides basic information. |
| A value greater than 1 provides more verbose information. |
| </p></dd> |
| <dt><code>show debug symtab-create</code></dt> |
| <dd><p>Show the current state of symbol table creation debugging. |
| </p></dd> |
| <dt><code>set debug target</code></dt> |
| <dd><a name="index-target-debugging-info"></a> |
| <p>Turns on or off display of <small>GDB</small> 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. |
| </p></dd> |
| <dt><code>show debug target</code></dt> |
| <dd><p>Displays the current state of displaying <small>GDB</small> target debugging |
| info. |
| </p></dd> |
| <dt><code>set debug timestamp</code></dt> |
| <dd><a name="index-timestampping-debugging-info"></a> |
| <p>Turns on or off display of timestamps with <small>GDB</small> debugging info. |
| When enabled, seconds and microseconds are displayed before each debugging |
| message. |
| </p></dd> |
| <dt><code>show debug timestamp</code></dt> |
| <dd><p>Displays the current state of displaying timestamps with <small>GDB</small> |
| debugging info. |
| </p></dd> |
| <dt><code>set debug varobj</code></dt> |
| <dd><a name="index-variable-object-debugging-info"></a> |
| <p>Turns on or off display of <small>GDB</small> variable object debugging |
| info. The default is off. |
| </p></dd> |
| <dt><code>show debug varobj</code></dt> |
| <dd><p>Displays the current state of displaying <small>GDB</small> variable object |
| debugging info. |
| </p></dd> |
| <dt><code>set debug xml</code></dt> |
| <dd><a name="index-XML-parser-debugging"></a> |
| <p>Turns on or off debugging messages for built-in XML parsers. |
| </p></dd> |
| <dt><code>show debug xml</code></dt> |
| <dd><p>Displays the current state of XML debugging messages. |
| </p></dd> |
| </dl> |
| |
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