| %%%%%%%%%%%%%%%% gdb-refcard.tex %%%%%%%%%%%%%%%% |
| |
| %This file is TeX source for a reference card describing GDB, the GNU debugger. |
| %Copyright (C) 1991--2024 Free Software Foundation, Inc. |
| %Permission is granted to make and distribute verbatim copies of |
| %this reference provided the copyright notices and permission notices |
| %are preserved on all copies. |
| % |
| %TeX markup is a programming language; accordingly this file is source |
| %for a program to generate a reference. |
| % |
| %This program is free software; you can redistribute it and/or modify |
| %it under the terms of the GNU General Public License as published by |
| %the Free Software Foundation; either version 3, or (at your option) |
| %any later version. |
| % |
| %This program is distributed in the hope that it will be useful, but |
| %WITHOUT ANY WARRANTY; without even the implied warranty of |
| %MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| %General Public License for more details. |
| % |
| %You should have received a copy of the GNU General Public License |
| %along with this program. If not, see <http://www.gnu.org/licenses/>. |
| % |
| %You can contact the maintainer at: doc@cygnus.com |
| % |
| % Documentation Department |
| % Cygnus Solutions |
| % 1325 Chesapeake Terrace |
| % Sunnyvale, CA 94089 USA |
| % |
| % +1 800 CYGNUS-1 |
| % |
| % |
| % |
| % 22-AUG-1993 Andreas Vogel |
| % |
| % Modifications made in order to handle different papersizes correctly. |
| % You only have to set the total width and height of the paper, the |
| % horizontal and vertical margin space measured from *paper edge* |
| % and the interline and interspec spacing. |
| % In order to support a new papersize, you have to fiddle with the |
| % latter four dimensions. Just try out a few values. |
| % All other values will be computed at process time so it should be |
| % quite easy to support different paper sizes - only four values to |
| % guess :-) |
| % |
| % To find the configuration places, just search for the string |
| % "CONFIGURATION". |
| % |
| % Andreas Vogel (av@ssw.de) |
| % |
| % |
| % |
| % Uncomment the following `magnification' command if you want to print |
| % out in a larger font. Caution! You may need larger paper. You had |
| % best avoid using 3-column output if you try this. See the ``Three |
| % column format'' section below if you want to print in three column |
| % format. |
| % |
| %\magnification=\magstep 1 |
| % |
| % NOTE ON INTENTIONAL OMISSIONS: This reference card includes most GDB |
| % commands, but due to space constraints there are some things I chose |
| % to omit. In general, not all synonyms for commands are covered, nor |
| % all variations of a command. |
| % The GDB-under-Emacs section omits gdb-mode functions without default |
| % keybindings. GDB startup options are not described. |
| % set print sevenbit-strings omitted. |
| % printsyms, printpsyms, omitted since they're for GDB maintenance primarily |
| % share omitted due to obsolescence |
| % set check range/type omitted at least til code is in GDB. |
| % |
| %-------------------- Three column format ----------------------- |
| |
| %%%% --- To disable three column format, comment out this entire section |
| |
| % Three-column format for landscape printing |
| |
| %-------- Papersize defs: |
| |
| \newdimen\totalwidth \newdimen\totalheight |
| \newdimen\hmargin \newdimen\vmargin |
| \newdimen\secskip \newdimen\lskip |
| \newdimen\barwidth \newdimen\barheight |
| \newdimen\intersecwidth |
| |
| %% |
| %% START CONFIGURATION - PAPERSIZE DEFINITIONS |
| %------- Papersize params: |
| %% US letter paper (8.5x11in) |
| %% |
| \totalwidth=11in % total width of paper |
| \totalheight=8.5in % total height of paper |
| \hmargin=.25in % horizontal margin width |
| \vmargin=.25in % vertical margin width |
| \secskip=1pc % space between refcard secs |
| \lskip=2pt % extra skip between \sec entries |
| \ifx\pdfoutput\undefined\else % check if we are using pdfTeX |
| \pdfpagewidth=\totalwidth % width of paper in pdf output |
| \pdfpageheight=\totalheight % height of paper in pdf output |
| \fi |
| %------- end papersize params |
| %% |
| %% change according to personal taste, not papersize dependent |
| %% |
| \barwidth=.1pt % width of the cropmark bar |
| \barheight=2pt % height of the cropmark bar |
| \intersecwidth=0.5em % width between \itmwid and \dfnwid |
| %% |
| %% END CONFIGURATION - PAPERSIZE DEFINITIONS |
| %% |
| |
| %% |
| %% values to be computed - nothing to configure |
| %% |
| \newdimen\fullhsize % width of area without margins |
| \newdimen\itmwid % width of item column |
| \newdimen\dfnwid % width of definition column |
| \newdimen\temp % only for temporary use |
| |
| %% |
| %% adjust the offsets so the margins are measured *from paper edge* |
| %% |
| \hoffset=-1in \advance \hoffset by \hmargin |
| \voffset=-1in \advance \voffset by \vmargin |
| |
| %% |
| %% fullhsize = totalwidth - (2 * hmargin) |
| %% |
| \fullhsize=\totalwidth |
| \temp=\hmargin \multiply \temp by 2 \advance \fullhsize by -\temp |
| |
| %% |
| %% hsize = (fullhsize - (4 * hmargin) - (2 * barwidth)) / 3 |
| %% |
| \hsize=\fullhsize |
| \temp=\hmargin \multiply \temp by 4 \advance \hsize by -\temp |
| \temp=\barwidth \multiply \temp by 2 \advance \hsize by -\temp |
| \divide \hsize by 3 |
| |
| %% |
| %% vsize = totalheight - (2 * vmargin) |
| %% |
| \vsize=\totalheight |
| \temp=\vmargin \multiply \temp by 2 \advance \vsize by -\temp |
| |
| %% |
| %% itmwid = (hsize - intersecwidth) * 1/3 |
| %% dfnwid = (hsize - intersecwidth) * 2/3 |
| %% |
| \temp=\hsize \advance \temp by -\intersecwidth \divide \temp by 3 |
| \itmwid=\temp |
| \dfnwid=\hsize \advance \dfnwid by -\itmwid |
| |
| %-------- end papersize defs |
| |
| |
| \def\fulline{\hbox to \fullhsize} |
| \let\lcr=L \newbox\leftcolumn\newbox\centercolumn |
| \output={\if L\lcr |
| \global\setbox\leftcolumn=\columnbox \global\let\lcr=C |
| \else |
| \if C\lcr |
| \global\setbox\centercolumn=\columnbox \global\let\lcr=R |
| \else \tripleformat \global\let\lcr=L |
| \fi |
| \fi |
| % \ifnum\outputpenalty>-20000 \else\dosupereject\fi |
| } |
| |
| %% |
| %% START CONFIGURATION - ALTERNATIVE FOLDING GUIDES |
| %% |
| %% For NO printed folding guide, |
| %% comment out other \def\vdecor's and uncomment: |
| |
| %\def\vdecor{\hskip\hmargin plus1fil\hskip\barwidth plus1fil\hskip\hmargin plus1fil} |
| |
| %% For SOLID LINE folding guide, |
| %% comment out other \def\vdecor's and uncomment: |
| |
| %\def\vdecor{\hskip\hmargin plus1fil \vrule width \barwidth \hskip\hmargin plus1fil} |
| |
| %% For SMALL MARKS NEAR TOP AND BOTTOM as folding guide, |
| %% comment out other \def\vdecor's and uncomment: |
| |
| \def\vdecor{\hskip\hmargin plus1fil |
| \vbox to \vsize{\hbox to \barwidth{\vrule height\barheight width\barwidth}\vfill |
| \hbox to \barwidth{\vrule height\barheight width\barwidth}}%THIS PERCENT SIGN IS ESSENTIAL |
| \hskip\hmargin plus1fil} |
| |
| %% |
| %% END CONFIGURATION - ALTERNATIVES FOR FOLDING GUIDES |
| %% |
| |
| \def\tripleformat{\shipout\vbox{\fulline{\box\leftcolumn\vdecor |
| \box\centercolumn\vdecor |
| \columnbox} |
| } |
| \advancepageno} |
| \def\columnbox{\leftline{\pagebody}} |
| \def\bye{\par\vfill |
| \supereject |
| \if R\lcr \null\vfill\eject\fi |
| \end} |
| |
| %-------------------- end three column format ----------------------- |
| |
| %-------------------- Computer Modern font defs: -------------------- |
| \font\bbf=cmbx10 |
| \font\vbbf=cmbx12 |
| \font\smrm=cmr6 |
| \font\brm=cmr10 |
| \font\rm=cmr7 |
| \font\it=cmti7 |
| \font\tt=cmtt8 |
| %-------------------- end font defs --------------------------------- |
| |
| % |
| \hyphenpenalty=5000\tolerance=2000\raggedright\raggedbottom |
| \normalbaselineskip=9pt\baselineskip=9pt |
| % |
| \parindent=0pt |
| \parskip=0pt |
| \footline={\vbox to0pt{\hss}} |
| % |
| \def\ctl#1{{\tt C-#1}} |
| \def\opt#1{{\brm[{\rm #1}]}} |
| \def\xtra#1{\noalign{\smallskip{\tt#1}}} |
| % |
| \long\def\sec#1;#2\endsec{\vskip \secskip |
| \halign{% |
| %COL 1 (of halign): |
| \vtop{\hsize=\itmwid\tt |
| ##\par\vskip \lskip }\hfil |
| %COL 2 (of halign): |
| &\vtop{\hsize=\dfnwid\hangafter=1\hangindent=\intersecwidth |
| \rm ##\par\vskip \lskip}\cr |
| %Tail of \long\def fills in halign body with \sec args: |
| \noalign{{\bbf #1}\vskip \lskip} |
| #2 |
| } |
| } |
| |
| {\vbbf GDB QUICK REFERENCE}\hfil{\smrm GDB Version 5}\qquad |
| |
| \sec Essential Commands; |
| gdb {\it program} \opt{{\it core}}&debug {\it program} \opt{using |
| coredump {\it core}}\cr |
| b \opt{\it file\tt:}{\it function}&set breakpoint at {\it function} \opt{in \it file}\cr |
| run \opt{{\it arglist}}&start your program \opt{with {\it arglist}}\cr |
| bt& backtrace: display program stack\cr |
| p {\it expr}&display the value of an expression\cr |
| c &continue running your program\cr |
| n &next line, stepping over function calls\cr |
| s &next line, stepping into function calls\cr |
| \endsec |
| |
| \sec Starting GDB; |
| gdb&start GDB, with no debugging files\cr |
| gdb {\it program}&begin debugging {\it program}\cr |
| gdb {\it program core}&debug coredump {\it core} produced by {\it |
| program}\cr |
| gdb --help&describe command line options\cr |
| \endsec |
| |
| \sec Stopping GDB; |
| quit&exit GDB; also {\tt q} or {\tt EOF} (eg \ctl{d})\cr |
| INTERRUPT&(eg \ctl{c}) terminate current command, or send to running process\cr |
| \endsec |
| |
| \sec Getting Help; |
| help&list classes of commands\cr |
| help {\it class}&one-line descriptions for commands in {\it class}\cr |
| help {\it command}&describe {\it command}\cr |
| \endsec |
| |
| \sec Executing your Program; |
| run {\it arglist}&start your program with {\it arglist}\cr |
| run&start your program with current argument list\cr |
| run $\ldots$ <{\it inf} >{\it outf}&start your program with input, output |
| redirected\cr |
| \cr |
| kill&kill running program\cr |
| \cr |
| tty {\it dev}&use {\it dev} as stdin and stdout for next {\tt run}\cr |
| set args {\it arglist}&specify {\it arglist} for next |
| {\tt run}\cr |
| set args&specify empty argument list\cr |
| show args&display argument list\cr |
| \cr |
| show env&show all environment variables\cr |
| show env {\it var}&show value of environment variable {\it var}\cr |
| set env {\it var} {\it string}&set environment variable {\it var}\cr |
| unset env {\it var}&remove {\it var} from environment\cr |
| \endsec |
| |
| \sec Shell Commands; |
| cd {\it dir}&change working directory to {\it dir}\cr |
| pwd&Print working directory\cr |
| make $\ldots$&call ``{\tt make}''\cr |
| shell {\it cmd}&execute arbitrary shell command string\cr |
| \endsec |
| |
| \vfill |
| \line{\smrm \opt{ } surround optional arguments \hfill $\ldots$ show |
| one or more arguments} |
| \vskip\baselineskip |
| \centerline{\smrm \copyright 1998-2024 Free Software Foundation, Inc.\qquad Permissions on back} |
| \eject |
| \sec Breakpoints and Watchpoints; |
| break \opt{\it file\tt:}{\it line}\par |
| b \opt{\it file\tt:}{\it line}&set breakpoint at {\it line} number \opt{in \it file}\par |
| eg:\quad{\tt break main.c:37}\quad\cr |
| break \opt{\it file\tt:}{\it func}&set breakpoint at {\it |
| func} \opt{in \it file}\cr |
| break +{\it offset}\par |
| break -{\it offset}&set break at {\it offset} lines from current stop\cr |
| break *{\it addr}&set breakpoint at address {\it addr}\cr |
| break&set breakpoint at next instruction\cr |
| break $\ldots$ if {\it expr}&break conditionally on nonzero {\it expr}\cr |
| cond {\it n} \opt{\it expr}&new conditional expression on breakpoint |
| {\it n}; make unconditional if no {\it expr}\cr |
| tbreak $\ldots$&temporary break; disable when reached\cr |
| rbreak \opt{\it file\tt:}{\it regex}&break on all functions matching {\it |
| regex} \opt{in \it file}\cr |
| watch {\it expr}&set a watchpoint for expression {\it expr}\cr |
| catch {\it event}&break at {\it event}, which may be {\tt catch}, {\tt throw}, |
| {\tt exec}, {\tt fork}, {\tt vfork}, {\tt load}, or {\tt unload}.\cr |
| \cr |
| info break&show defined breakpoints\cr |
| info watch&show defined watchpoints\cr |
| \cr |
| clear&delete breakpoints at next instruction\cr |
| clear \opt{\it file\tt:}{\it fun}&delete breakpoints at entry to {\it fun}()\cr |
| clear \opt{\it file\tt:}{\it line}&delete breakpoints on source line \cr |
| delete \opt{{\it n}}&delete breakpoints |
| \opt{or breakpoint {\it n}}\cr |
| \cr |
| disable \opt{{\it n}}&disable breakpoints |
| \opt{or breakpoint {\it n}} |
| \cr |
| enable \opt{{\it n}}&enable breakpoints |
| \opt{or breakpoint {\it n}} |
| \cr |
| enable once \opt{{\it n}}&enable breakpoints \opt{or breakpoint {\it n}}; |
| disable again when reached |
| \cr |
| enable del \opt{{\it n}}&enable breakpoints \opt{or breakpoint {\it n}}; |
| delete when reached |
| \cr |
| \cr |
| ignore {\it n} {\it count}&ignore breakpoint {\it n}, {\it count} |
| times\cr |
| \cr |
| commands {\it n}\par |
| \qquad \opt{\tt silent}\par |
| \qquad {\it command-list}&execute GDB {\it command-list} every time breakpoint {\it n} is reached. \opt{{\tt silent} suppresses default |
| display}\cr |
| end&end of {\it command-list}\cr |
| \endsec |
| |
| \sec Program Stack; |
| backtrace \opt{\it n}\par |
| bt \opt{\it n}&print trace of all frames in stack; or of {\it n} |
| frames---innermost if {\it n}{\tt >0}, outermost if {\it n}{\tt <0}\cr |
| frame \opt{\it n}&select frame number {\it n} or frame at address {\it |
| n}; if no {\it n}, display current frame\cr |
| up {\it n}&select frame {\it n} frames up\cr |
| down {\it n}&select frame {\it n} frames down\cr |
| info frame \opt{\it addr}&describe selected frame, or frame at |
| {\it addr}\cr |
| info args&arguments of selected frame\cr |
| info locals&local variables of selected frame\cr |
| info reg \opt{\it rn}$\ldots$\par |
| info all-reg \opt{\it rn}®ister values \opt{for regs {\it rn\/}} in |
| selected frame; {\tt all-reg} includes floating point\cr |
| \endsec |
| |
| \vfill\eject |
| \sec Execution Control; |
| continue \opt{\it count}\par |
| c \opt{\it count}&continue running; if {\it count} specified, ignore |
| this breakpoint next {\it count} times\cr |
| \cr |
| step \opt{\it count}\par |
| s \opt{\it count}&execute until another line reached; repeat {\it count} times if |
| specified\cr |
| stepi \opt{\it count}\par |
| si \opt{\it count}&step by machine instructions rather than source |
| lines\cr |
| \cr |
| next \opt{\it count}\par |
| n \opt{\it count}&execute next line, including any function calls\cr |
| nexti \opt{\it count}\par |
| ni \opt{\it count}&next machine instruction rather than source |
| line\cr |
| \cr |
| until \opt{\it location}&run until next instruction (or {\it |
| location})\cr |
| finish&run until selected stack frame returns\cr |
| return \opt{\it expr}&pop selected stack frame without executing |
| \opt{setting return value}\cr |
| signal {\it num}&resume execution with signal {\it s} (none if {\tt 0})\cr |
| jump {\it line}\par |
| jump *{\it address}&resume execution at specified {\it line} number or |
| {\it address}\cr |
| set var={\it expr}&evaluate {\it expr} without displaying it; use for |
| altering program variables\cr |
| \endsec |
| |
| \sec Display; |
| print \opt{\tt/{\it f}\/} \opt{\it expr}\par |
| p \opt{\tt/{\it f}\/} \opt{\it expr}&show value of {\it expr} \opt{or |
| last value \tt \$} according to format {\it f}:\cr |
| \qquad x&hexadecimal\cr |
| \qquad d&signed decimal\cr |
| \qquad u&unsigned decimal\cr |
| \qquad o&octal\cr |
| \qquad t&binary\cr |
| \qquad a&address, absolute and relative\cr |
| \qquad c&character\cr |
| \qquad f&floating point\cr |
| call \opt{\tt /{\it f}\/} {\it expr}&like {\tt print} but does not display |
| {\tt void}\cr |
| x \opt{\tt/{\it Nuf}\/} {\it expr}&examine memory at address {\it expr}; |
| optional format spec follows slash\cr |
| \quad {\it N}&count of how many units to display\cr |
| \quad {\it u}&unit size; one of\cr |
| &{\tt\qquad b}\ individual bytes\cr |
| &{\tt\qquad h}\ halfwords (two bytes)\cr |
| &{\tt\qquad w}\ words (four bytes)\cr |
| &{\tt\qquad g}\ giant words (eight bytes)\cr |
| \quad {\it f}&printing format. Any {\tt print} format, or\cr |
| &{\tt\qquad s}\ null-terminated string\cr |
| &{\tt\qquad i}\ machine instructions\cr |
| disassem \opt{\it addr}&display memory as machine instructions\cr |
| \endsec |
| |
| \sec Automatic Display; |
| display \opt{\tt/\it f\/} {\it expr}&show value of {\it expr} each time |
| program stops \opt{according to format {\it f}\/}\cr |
| display&display all enabled expressions on list\cr |
| undisplay {\it n}&remove number(s) {\it n} from list of |
| automatically displayed expressions\cr |
| disable disp {\it n}&disable display for expression(s) number {\it |
| n}\cr |
| enable disp {\it n}&enable display for expression(s) number {\it |
| n}\cr |
| info display&numbered list of display expressions\cr |
| \endsec |
| |
| \vfill\eject |
| |
| \sec Expressions; |
| {\it expr}&an expression in C, C++, or Modula-2 (including function calls), or:\cr |
| {\it addr\/}@{\it len}&an array of {\it len} elements beginning at {\it |
| addr}\cr |
| {\it file}::{\it nm}&a variable or function {\it nm} defined in {\it |
| file}\cr |
| $\tt\{${\it type}$\tt\}${\it addr}&read memory at {\it addr} as specified |
| {\it type}\cr |
| \$&most recent displayed value\cr |
| \${\it n}&{\it n}th displayed value\cr |
| \$\$&displayed value previous to \$\cr |
| \$\${\it n}&{\it n}th displayed value back from \$\cr |
| \$\_&last address examined with {\tt x}\cr |
| \$\_\_&value at address \$\_\cr |
| \${\it var}&convenience variable; assign any value\cr |
| \cr |
| show values \opt{{\it n}}&show last 10 values \opt{or surrounding |
| \${\it n}}\cr |
| show conv&display all convenience variables\cr |
| \endsec |
| |
| \sec Symbol Table; |
| info address {\it s}&show where symbol {\it s} is stored\cr |
| info func \opt{\it regex}&show names, types of defined functions |
| (all, or matching {\it regex})\cr |
| info var \opt{\it regex}&show names, types of global variables (all, |
| or matching {\it regex})\cr |
| whatis \opt{\it expr}\par |
| ptype \opt{\it expr}&show data type of {\it expr} \opt{or \tt \$} |
| without evaluating; {\tt ptype} gives more detail\cr |
| ptype {\it type}&describe type, struct, union, or enum\cr |
| \endsec |
| |
| \sec GDB Scripts; |
| source {\it script}&read, execute GDB commands from file {\it |
| script}\cr |
| \cr |
| define {\it cmd}\par |
| \qquad {\it command-list}&create new GDB command {\it cmd}; |
| execute script defined by {\it command-list}\cr |
| end&end of {\it command-list}\cr |
| document {\it cmd}\par |
| \qquad {\it help-text}&create online documentation |
| for new GDB command {\it cmd}\cr |
| end&end of {\it help-text}\cr |
| \endsec |
| |
| \sec Signals; |
| handle {\it signal} {\it act}&specify GDB actions for {\it signal}:\cr |
| \quad print&announce signal\cr |
| \quad noprint&be silent for signal\cr |
| \quad stop&halt execution on signal\cr |
| \quad nostop&do not halt execution\cr |
| \quad pass&allow your program to handle signal\cr |
| \quad nopass&do not allow your program to see signal\cr |
| info signals&show table of signals, GDB action for each\cr |
| \endsec |
| |
| \sec Debugging Targets; |
| target {\it type} {\it param}&connect to target machine, process, or file\cr |
| help target&display available targets\cr |
| attach {\it param}&connect to another process\cr |
| detach&release target from GDB control\cr |
| \endsec |
| |
| \vfill\eject |
| \sec Controlling GDB; |
| set {\it param} {\it value}&set one of GDB's internal parameters\cr |
| show {\it param}&display current setting of parameter\cr |
| \xtra{\rm Parameters understood by {\tt set} and {\tt show}:} |
| \quad complaint {\it limit}&number of messages on unusual symbols\cr |
| \quad confirm {\it on/off}&enable or disable cautionary queries\cr |
| \quad editing {\it on/off}&control {\tt readline} command-line editing\cr |
| \quad height {\it lpp}&number of lines before pause in display\cr |
| \quad language {\it lang}&Language for GDB expressions ({\tt auto}, {\tt c} or |
| {\tt modula-2})\cr |
| \quad listsize {\it n}&number of lines shown by {\tt list}\cr |
| \quad prompt {\it str}&use {\it str} as GDB prompt\cr |
| \quad radix {\it base}&octal, decimal, or hex number representation\cr |
| \quad verbose {\it on/off}&control messages when loading |
| symbols\cr |
| \quad width {\it cpl}&number of characters before line folded\cr |
| \quad write {\it on/off}&Allow or forbid patching binary, core files |
| (when reopened with {\tt exec} or {\tt core}) |
| \cr |
| \quad history $\ldots$\par |
| \quad h $\ldots$&groups with the following options:\cr |
| \quad h exp {\it off/on}&disable/enable {\tt readline} history expansion\cr |
| \quad h file {\it filename}&file for recording GDB command history\cr |
| \quad h size {\it size}&number of commands kept in history list\cr |
| \quad h save {\it off/on}&control use of external file for |
| command history\cr |
| \cr |
| \quad print $\ldots$\par |
| \quad p $\ldots$&groups with the following options:\cr |
| \quad p address {\it on/off}&print memory addresses in stacks, |
| values\cr |
| \quad p array {\it off/on}&compact or attractive format for |
| arrays\cr |
| \quad p demangl {\it on/off}&source (demangled) or internal form for C++ |
| symbols\cr |
| \quad p asm-dem {\it on/off}&demangle C++ symbols in |
| machine-instruction output\cr |
| \quad p elements {\it limit}&number of array elements to display\cr |
| \quad p object {\it on/off}&print C++ derived types for objects\cr |
| \quad p pretty {\it off/on}&struct display: compact or indented\cr |
| \quad p union {\it on/off}&display of union members\cr |
| \quad p vtbl {\it off/on}&display of C++ virtual function |
| tables\cr |
| \cr |
| show commands&show last 10 commands\cr |
| show commands {\it n}&show 10 commands around number {\it n}\cr |
| show commands +&show next 10 commands\cr |
| \endsec |
| |
| \sec Working Files; |
| file \opt{\it file}&use {\it file} for both symbols and executable; |
| with no arg, discard both\cr |
| core \opt{\it file}&read {\it file} as coredump; or discard\cr |
| exec \opt{\it file}&use {\it file} as executable only; or discard\cr |
| symbol \opt{\it file}&use symbol table from {\it file}; or discard\cr |
| load {\it file}&dynamically link {\it file\/} and add its symbols\cr |
| add-sym {\it file} {\it addr}&read additional symbols from {\it file}, |
| dynamically loaded at {\it addr}\cr |
| info files&display working files and targets in use\cr |
| path {\it dirs}&add {\it dirs} to front of path searched for |
| executable and symbol files\cr |
| show path&display executable and symbol file path\cr |
| info share&list names of shared libraries currently loaded\cr |
| \endsec |
| |
| \vfill\eject |
| \sec Source Files; |
| dir {\it names}&add directory {\it names} to front of source path\cr |
| dir&clear source path\cr |
| show dir&show current source path\cr |
| \cr |
| list&show next ten lines of source\cr |
| list -&show previous ten lines\cr |
| list {\it lines}&display source surrounding {\it lines}, |
| specified as:\cr |
| \quad{\opt{\it file\tt:}\it num}&line number \opt{in named file}\cr |
| \quad{\opt{\it file\tt:}\it function}&beginning of function \opt{in |
| named file}\cr |
| \quad{\tt +\it off}&{\it off} lines after last printed\cr |
| \quad{\tt -\it off}&{\it off} lines previous to last printed\cr |
| \quad{\tt*\it address}&line containing {\it address}\cr |
| list {\it f},{\it l}&from line {\it f} to line {\it l}\cr |
| info line {\it num}&show starting, ending addresses of compiled code for |
| source line {\it num}\cr |
| info source&show name of current source file\cr |
| info sources&list all source files in use\cr |
| forw {\it regex}&search following source lines for {\it regex}\cr |
| rev {\it regex}&search preceding source lines for {\it regex}\cr |
| \endsec |
| |
| \sec GDB under GNU Emacs; |
| M-x gdb&run GDB under Emacs\cr |
| \ctl{h} m&describe GDB mode\cr |
| M-s&step one line ({\tt step})\cr |
| M-n&next line ({\tt next})\cr |
| M-i&step one instruction ({\tt stepi})\cr |
| \ctl{c} \ctl{f}&finish current stack frame ({\tt finish})\cr |
| M-c&continue ({\tt cont})\cr |
| M-u&up {\it arg} frames ({\tt up})\cr |
| M-d&down {\it arg} frames ({\tt down})\cr |
| \ctl{x} \&© number from point, insert at end\cr |
| \ctl{x} SPC&(in source file) set break at point\cr |
| \endsec |
| |
| \sec GDB License; |
| show copying&Display GNU General Public License\cr |
| show warranty&There is NO WARRANTY for GDB. Display full no-warranty |
| statement.\cr |
| \endsec |
| |
| |
| \vfill |
| {\smrm\parskip=6pt |
| Copyright \copyright 1991-2024 Free Software Foundation, Inc. |
| Author: Roland H. Pesch |
| |
| The author assumes no responsibility for any errors on this card. |
| |
| This card may be freely distributed under the terms of the GNU |
| General Public License. |
| |
| Please contribute to development of this card by |
| annotating it. Improvements can be sent to bug-gdb@gnu.org. |
| |
| GDB itself is free software; you are welcome to distribute copies of |
| it under the terms of the GNU General Public License. There is |
| absolutely no warranty for GDB. |
| } |
| \end |