* refcard.tex: avoid bad linebreaks even when REFEDITS=psrc.sed
[deliverable/binutils-gdb.git] / gdb / doc / cygref.tex
1 %This file is TeX source for a reference card describing GDB, the GNU debugger.
2 %Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
3 %Permission is granted to make and distribute verbatim copies of
4 %this reference provided the copyright notices and permission notices
5 %are preserved on all copies.
6 %
7 %TeX markup is a programming language; accordingly this file is source
8 %for a program to generate a reference.
9 %
10 %This program is free software; you can redistribute it and/or modify
11 %it under the terms of the GNU General Public License as published by
12 %the Free Software Foundation; either version 1, or (at your option)
13 %any later version.
14 %
15 %This program is distributed in the hope that it will be useful, but
16 %WITHOUT ANY WARRANTY; without even the implied warranty of
17 %MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 %General Public License for more details.
19 %
20 %You can find a copy of the GNU General Public License in the GDB
21 %manual; or write to the Free Software Foundation, Inc.,
22 %675 Mass Ave, Cambridge, MA 02139, USA.
23 %
24 %You can contact the author as: pesch@cygnus.com
25 %
26 % Roland Pesch
27 % Cygnus Support
28 % 1937 Landings Drive
29 % Mountain View, CA 94043 USA
30 %
31 % +1 415 903 1400
32 %
33 % Cygnus Support is an organization devoted to commercial
34 % support of free software. For general information
35 % contact ``info@cygnus.com''
36 %
37 % NOTE ON INTENTIONAL OMISSIONS: This reference card includes most GDB
38 % commands, but due to space constraints there are some things I chose
39 % to omit. In general, not all synonyms for commands are covered, nor
40 % all variations of a command.
41 % The GDB-under-Emacs section omits gdb-mode functions without default
42 % keybindings. GDB startup options are not described.
43 % set print sevenbit-strings, set symbol-reloading omitted.
44 % printsyms, printpsyms, omitted since they're for GDB maintenance primarily
45 % share omitted due to obsolescence
46 % set check range/type omitted at least til code is in GDB.
47 %
48 %
49 % 22-AUG-1993 Andreas Vogel
50 %
51 % Modifications made in order to handle different papersizes correctly.
52 % You only have to set the total width and height of the paper, the
53 % horizontal and vertical margin space measured from *paper edge*
54 % and the interline and interspec spacing.
55 % In order to support a new papersize, you have to fiddle with the
56 % latter four dimensions. Just try out a few values.
57 % All other values will be computed at process time so it should be
58 % quite easy to support different paper sizes - only four values to
59 % guess :-)
60 %
61 % To find the configuration places, just search for the string
62 % "CONFIGURATION".
63 %
64 % Andreas Vogel (av@ssw.de)
65 %
66 %
67 %
68 %
69 \input epsf
70 \epsfxsize=1.75in
71 %-------------------- Three column format -----------------------
72
73 %%%% --- To disable three column format, comment out this entire section
74
75 % Three-column format for landscape printing
76
77 %-------- Papersize defs:
78
79 \newdimen\totalwidth \newdimen\totalheight
80 \newdimen\hmargin \newdimen\vmargin
81 \newdimen\secskip \newdimen\lskip
82 \newdimen\barwidth \newdimen\barheight
83 \newdimen\intersecwidth
84
85 %%
86 %% START CONFIGURATION - PAPERSIZE DEFINITIONS
87 %------- Papersize params:
88 %% US letter paper (8.5x11in)
89 %%
90 \totalwidth=11in % total width of paper
91 \totalheight=8.5in % total height of paper
92 \hmargin=.25in % horizontal margin width
93 \vmargin=.25in % vertical margin width
94 \secskip=1pc % space between refcard secs
95 \lskip=2pt % extra skip between \sec entries
96 %------- end papersize params
97 %%
98 %% change according to personal taste, not papersize dependent
99 %%
100 \barwidth=.1pt % width of the cropmark bar
101 \barheight=2pt % height of the cropmark bar
102 \intersecwidth=0.5em % width between \itmwid and \dfnwid
103 %%
104 %% END CONFIGURATION - PAPERSIZE DEFINITIONS
105 %%
106
107 %%
108 %% values to be computed - nothing to configure
109 %%
110 \newdimen\fullhsize % width of area without margins
111 \newdimen\itmwid % width of item column
112 \newdimen\dfnwid % width of definition column
113 \newdimen\temp % only for temporary use
114
115 %%
116 %% adjust the offsets so the margins are measured *from paper edge*
117 %%
118 \hoffset=-1in \advance \hoffset by \hmargin
119 \voffset=-1in \advance \voffset by \vmargin
120
121 %%
122 %% fullhsize = totalwidth - (2 * hmargin)
123 %%
124 \fullhsize=\totalwidth
125 \temp=\hmargin \multiply \temp by 2 \advance \fullhsize by -\temp
126
127 %%
128 %% hsize = (fullhsize - (4 * hmargin) - (2 * barwidth)) / 3
129 %%
130 \hsize=\fullhsize
131 \temp=\hmargin \multiply \temp by 4 \advance \hsize by -\temp
132 \temp=\barwidth \multiply \temp by 2 \advance \hsize by -\temp
133 \divide \hsize by 3
134
135 %%
136 %% vsize = totalheight - (2 * vmargin)
137 %%
138 \vsize=\totalheight
139 \temp=\vmargin \multiply \temp by 2 \advance \vsize by -\temp
140
141 %%
142 %% itmwid = (hsize - intersecwidth) * 1/3
143 %% dfnwid = (hsize - intersecwidth) * 2/3
144 %%
145 \temp=\hsize \advance \temp by -\intersecwidth \divide \temp by 3
146 \itmwid=\temp
147 \dfnwid=\hsize \advance \dfnwid by -\itmwid
148
149 %-------- end papersize defs
150
151
152 \def\fulline{\hbox to \fullhsize}
153 \let\lcr=L \newbox\leftcolumn\newbox\centercolumn
154 \output={\if L\lcr
155 \global\setbox\leftcolumn=\columnbox \global\let\lcr=C
156 \else
157 \if C\lcr
158 \global\setbox\centercolumn=\columnbox \global\let\lcr=R
159 \else \tripleformat \global\let\lcr=L
160 \fi
161 \fi
162 % \ifnum\outputpenalty>-20000 \else\dosupereject\fi
163 }
164
165 %%
166 %% START CONFIGURATION - ALTERNATIVE FOLDING GUIDES
167 %%
168 %% For NO printed folding guide,
169 %% comment out other \def\vdecor's and uncomment:
170
171 %\def\vdecor{\hskip\hmargin plus1fil\hskip\barwidth plus1fil\hskip\hmargin plus1fil}
172
173 %% For SOLID LINE folding guide,
174 %% comment out other \def\vdecor's and uncomment:
175
176 %\def\vdecor{\hskip\hmargin plus1fil \vrule width \barwidth \hskip\hmargin plus1fil}
177
178 %% For SMALL MARKS NEAR TOP AND BOTTOM as folding guide,
179 %% comment out other \def\vdecor's and uncomment:
180
181 \def\vdecor{\hskip\hmargin plus1fil
182 \vbox to \vsize{\hbox to \barwidth{\vrule height\barheight width\barwidth}\vfill
183 \hbox to \barwidth{\vrule height\barheight width\barwidth}}%THIS PERCENT SIGN IS ESSENTIAL
184 \hskip\hmargin plus1fil}
185
186 %%
187 %% END CONFIGURATION - ALTERNATIVES FOR FOLDING GUIDES
188 %%
189
190 \def\tripleformat{\shipout\vbox{\fulline{\box\leftcolumn\vdecor
191 \box\centercolumn\vdecor
192 \columnbox}
193 }
194 \advancepageno}
195 \def\columnbox{\leftline{\pagebody}}
196 \def\bye{\par\vfill
197 \supereject
198 \if R\lcr \null\vfill\eject\fi
199 \end}
200
201 %-------------------- end three column format -----------------------
202
203 %-------------------- PostScript (K Berry names) font defs: --------------
204 \font\bbf=ptmb at 10pt
205 \font\vbbf=ptmb at 12pt
206 \font\smrm=ptmr at 6pt
207 \font\brm=ptmr at 10pt
208 \font\rm=ptmr at 8pt
209 \font\it=ptmri at 8pt
210 \font\tt=pcrr at 8pt
211 % Used only for copyright, replacing plain TeX macro.
212 \font\sym=psyr at 7pt
213 \def\copyright{{\sym\char'323}}
214 %-------------------- end font defs ---------------------------------
215
216 %
217 \hyphenpenalty=5000\tolerance=2000\raggedright\raggedbottom
218 \normalbaselineskip=9pt\baselineskip=9pt
219 %
220 \parindent=0pt
221 \parskip=0pt
222 \footline={\vbox to0pt{\hss}}
223 %
224 \def\ctl#1{{\tt C-#1}}
225 \def\opt#1{{\brm[{\rm #1}]}}
226 \def\xtra#1{\noalign{\smallskip{\tt#1}}}
227 %
228 \long\def\sec#1;#2\endsec{\vskip \secskip
229 \halign{%
230 %COL 1 (of halign):
231 \vtop{\hsize=\itmwid\tt
232 ##\par\vskip \lskip }\hfil
233 %COL 2 (of halign):
234 &\vtop{\hsize=\dfnwid\hangafter=1\hangindent=\intersecwidth
235 \rm ##\par\vskip \lskip}\cr
236 %Tail of \long\def fills in halign body with \sec args:
237 \noalign{{\bbf #1}\vskip \lskip}
238 #2
239 }
240 }
241 {\vbbf GDB QUICK REFERENCE}\hfil{\smrm GDB Version 4}
242 {\baselineskip=0pt
243 \vskip 7.15 in
244 \hskip .33in\epsfbox{cyglogo.eps}
245 \vskip -7.82 in}
246 \vskip 3pt
247
248 \sec Essential Commands;
249 gdb {\it program} \opt{{\it core}}&debug {\it program} \opt{using
250 coredump {\it core}}\cr
251 b \opt{\it file\tt:}{\it function}&set breakpoint at {\it function} \opt{in \it file}\cr
252 run \opt{{\it arglist}}&start your program \opt{with {\it arglist}}\cr
253 bt& backtrace: display program stack\cr
254 p {\it expr}&display the value of an expression\cr
255 c &continue running your program\cr
256 n &next line, stepping over function calls\cr
257 s &next line, stepping into function calls\cr
258 \endsec
259
260 \sec Starting GDB;
261 gdb&start GDB, with no debugging files\cr
262 gdb {\it program}&begin debugging {\it program}\cr
263 gdb {\it program core}&debug coredump {\it core} produced by {\it
264 program}\cr
265 gdb --help&describe command line options\cr
266 \endsec
267
268 \sec Stopping GDB;
269 quit&exit GDB; also {\tt q} or {\tt EOF} (eg \ctl{d})\cr
270 INTERRUPT&(eg \ctl{c}) terminate current command, or send to running process\cr
271 \endsec
272
273 \sec Getting Help;
274 help&list classes of commands\cr
275 help {\it class}&one-line descriptions for commands in {\it class}\cr
276 help {\it command}&describe {\it command}\cr
277 \endsec
278
279 \sec Executing your Program;
280 run {\it arglist}&start your program with {\it arglist}\cr
281 run&start your program with current argument list\cr
282 run $\ldots$ <{\it inf} >{\it outf}&start your program with input, output
283 redirected\cr
284 \cr
285 kill&kill running program\cr
286 \cr
287 tty {\it dev}&use {\it dev} as stdin and stdout for next {\tt run}\cr
288 set args {\it arglist}&specify {\it arglist} for next
289 {\tt run}\cr
290 set args&specify empty argument list\cr
291 show args&display argument list\cr
292 \cr
293 show env&show all environment variables\cr
294 show env {\it var}&show value of environment variable {\it var}\cr
295 set env {\it var} {\it string}&set environment variable {\it var}\cr
296 unset env {\it var}&remove {\it var} from environment\cr
297 \endsec
298
299 \sec Shell Commands;
300 cd {\it dir}&change working directory to {\it dir}\cr
301 pwd&Print working directory\cr
302 make $\ldots$&call ``{\tt make}''\cr
303 shell {\it cmd}&execute arbitrary shell command string\cr
304 \endsec
305
306 \vfill
307 \eject
308 \sec Breakpoints and Watchpoints;
309 break \opt{\it file\tt:}{\it line}\par
310 b \opt{\it file\tt:}{\it line}&set breakpoint at {\it line} number \opt{in \it file}\par
311 eg:\quad{\tt break main.c:37}\quad\cr
312 break \opt{\it file\tt:}{\it func}&set breakpoint at {\it
313 func} \opt{in \it file}\cr
314 break +{\it offset}\par
315 break -{\it offset}&set break at {\it offset} lines from current stop\cr
316 break *{\it addr}&set breakpoint at address {\it addr}\cr
317 break&set breakpoint at next instruction\cr
318 break $\ldots$ if {\it expr}&break conditionally on nonzero {\it expr}\cr
319 cond {\it n} \opt{\it expr}&new conditional expression on breakpoint
320 {\it n}; make unconditional if no {\it expr}\cr
321 tbreak $\ldots$&temporary break; disable when reached\cr
322 rbreak {\it regex}&break on all functions matching {\it regex}\cr
323 watch {\it expr}&set a watchpoint for expression {\it expr}\cr
324 catch {\it x}&break at C++ handler for exception {\it x}\cr
325 \cr
326 info break&show defined breakpoints\cr
327 info watch&show defined watchpoints\cr
328 \cr
329 clear&delete breakpoints at next instruction\cr
330 clear \opt{\it file\tt:}{\it fun}&delete breakpoints at entry to {\it fun}()\cr
331 clear \opt{\it file\tt:}{\it line}&delete breakpoints on source line \cr
332 delete \opt{{\it n}}&delete breakpoints
333 \opt{or breakpoint {\it n}}\cr
334 \cr
335 disable \opt{{\it n}}&disable breakpoints
336 \opt{or breakpoint {\it n}}
337 \cr
338 enable \opt{{\it n}}&enable breakpoints
339 \opt{or breakpoint {\it n}}
340 \cr
341 enable once \opt{{\it n}}&enable breakpoints \opt{or breakpoint {\it n}};
342 disable again when reached
343 \cr
344 enable del \opt{{\it n}}&enable breakpoints \opt{or breakpoint {\it n}};
345 delete when reached
346 \cr
347 \cr
348 ignore {\it n} {\it count}&ignore breakpoint {\it n}, {\it count}
349 times\cr
350 \cr
351 commands {\it n}\par
352 \qquad \opt{\tt silent}\par
353 \qquad {\it command-list}&execute GDB {\it command-list} every time breakpoint {\it n} is reached. \opt{{\tt silent} suppresses default
354 display}\cr
355 end&end of {\it command-list}\cr
356 \endsec
357
358 \sec Program Stack;
359 backtrace \opt{\it n}\par
360 bt \opt{\it n}&print trace of all frames in stack; or of {\it n}
361 frames---innermost if {\it n}{\tt >0}, outermost if {\it n}{\tt <0}\cr
362 frame \opt{\it n}&select frame number {\it n} or frame at address {\it
363 n}; if no {\it n}, display current frame\cr
364 up {\it n}&select frame {\it n} frames up\cr
365 down {\it n}&select frame {\it n} frames down\cr
366 info frame \opt{\it addr}&describe selected frame, or frame at
367 {\it addr}\cr
368 info args&arguments of selected frame\cr
369 info locals&local variables of selected frame\cr
370 info reg \opt{\it rn}\par
371 info all-reg \opt{\it rn}&register values \opt{for reg {\it rn\/}} in
372 selected frame; {\tt all-reg} includes floating point\cr
373 info catch&exception handlers active in selected frame\cr
374 \endsec
375
376 \vfill
377 \line{\smrm \opt{ } surround optional arguments.\hfil $\ldots$ show
378 one or more arguments}
379 \vskip\baselineskip
380 \centerline{\smrm \copyright 1991, 1992, 1993 Free Software Foundation, Inc.\qquad Permissions on back}
381 \eject
382 \sec Execution Control;
383 continue \opt{\it count}\par
384 c \opt{\it count}&continue running; if {\it count} specified, ignore
385 this breakpoint next {\it count} times\cr
386 \cr
387 step \opt{\it count}\par
388 s \opt{\it count}&execute until another line reached; repeat {\it count} times if
389 specified\cr
390 stepi \opt{\it count}\par
391 si \opt{\it count}&step by machine instructions rather than source
392 lines\cr
393 \cr
394 next \opt{\it count}\par
395 n \opt{\it count}&execute next line, including any function calls\cr
396 nexti \opt{\it count}\par
397 ni \opt{\it count}&next machine instruction rather than source
398 line\cr
399 \cr
400 until \opt{\it location}&run until next instruction (or {\it
401 location})\cr
402 finish&run until selected stack frame returns\cr
403 return \opt{\it expr}&pop selected stack frame without executing
404 \opt{setting return value}\cr
405 signal {\it num}&resume execution with signal {\it s} (none if {\tt 0})\cr
406 jump {\it line}\par
407 jump *{\it address}&resume execution at specified {\it line} number or
408 {\it address}\cr
409 set var={\it expr}&evaluate {\it expr} without displaying it; use for
410 altering program variables\cr
411 \endsec
412
413 \sec Display;
414 print \opt{\tt/{\it f}\/} \opt{\it expr}\par
415 p \opt{\tt/{\it f}\/} \opt{\it expr}&show value of {\it expr} \opt{or
416 last value \tt \$} according to format {\it f}:\cr
417 \qquad x&hexadecimal\cr
418 \qquad d&signed decimal\cr
419 \qquad u&unsigned decimal\cr
420 \qquad o&octal\cr
421 \qquad t&binary\cr
422 \qquad a&address, absolute and relative\cr
423 \qquad c&character\cr
424 \qquad f&floating point\cr
425 call \opt{\tt /{\it f}\/} {\it expr}&like {\tt print} but does not display
426 {\tt void}\cr
427 x \opt{\tt/{\it Nuf}\/} {\it expr}&examine memory at address {\it expr};
428 optional format spec follows slash\cr
429 \quad {\it N}&count of how many units to display\cr
430 \quad {\it u}&unit size; one of\cr
431 &{\tt\qquad b}\ individual bytes\cr
432 &{\tt\qquad h}\ halfwords (two bytes)\cr
433 &{\tt\qquad w}\ words (four bytes)\cr
434 &{\tt\qquad g}\ giant words (eight bytes)\cr
435 \quad {\it f}&printing format. Any {\tt print} format, or\cr
436 &{\tt\qquad s}\ null-terminated string\cr
437 &{\tt\qquad i}\ machine instructions\cr
438 disassem \opt{\it addr}&display memory as machine instructions\cr
439 \endsec
440
441 \sec Automatic Display;
442 display \opt{\tt/\it f\/} {\it expr}&show value of {\it expr} each time
443 program stops \opt{according to format {\it f}\/}\cr
444 display&display all enabled expressions on list\cr
445 undisplay {\it n}&remove number(s) {\it n} from list of
446 automatically displayed expressions\cr
447 disable disp {\it n}&disable display for expression(s) number {\it
448 n}\cr
449 enable disp {\it n}&enable display for expression(s) number {\it
450 n}\cr
451 info display&numbered list of display expressions\cr
452 \endsec
453
454 \vfill\eject
455
456 \sec Expressions;
457 {\it expr}&an expression in C, C++, or Modula-2 (including function calls), or:\cr
458 {\it addr\/}@{\it len}&an array of {\it len} elements beginning at {\it
459 addr}\cr
460 {\it file}::{\it nm}&a variable or function {\it nm} defined in {\it
461 file}\cr
462 $\tt\{${\it type}$\tt\}${\it addr}&read memory at {\it addr} as specified
463 {\it type}\cr
464 \$&most recent displayed value\cr
465 \${\it n}&{\it n}th displayed value\cr
466 \$\$&displayed value previous to \$\cr
467 \$\${\it n}&{\it n}th displayed value back from \$\cr
468 \$\_&last address examined with {\tt x}\cr
469 \$\_\_&value at address \$\_\cr
470 \${\it var}&convenience variable; assign any value\cr
471 \cr
472 show values \opt{{\it n}}&show last 10 values \opt{or surrounding
473 \${\it n}}\cr
474 show conv&display all convenience variables\cr
475 \endsec
476
477 \sec Symbol Table;
478 info address {\it s}&show where symbol {\it s} is stored\cr
479 info func \opt{\it regex}&show names, types of defined functions
480 (all, or matching {\it regex})\cr
481 info var \opt{\it regex}&show names, types of global variables (all,
482 or matching {\it regex})\cr
483 whatis \opt{\it expr}\par
484 ptype \opt{\it expr}&show data type of {\it expr} \opt{or \tt \$}
485 without evaluating; {\tt ptype} gives more detail\cr
486 ptype {\it type}&describe type, struct, union, or enum\cr
487 \endsec
488
489 \sec GDB Scripts;
490 source {\it script}&read, execute GDB commands from file {\it
491 script}\cr
492 \cr
493 define {\it cmd}\par
494 \qquad {\it command-list}&create new GDB command {\it cmd};
495 execute script defined by {\it command-list}\cr
496 end&end of {\it command-list}\cr
497 document {\it cmd}\par
498 \qquad {\it help-text}&create online documentation
499 for new GDB command {\it cmd}\cr
500 end&end of {\it help-text}\cr
501 \endsec
502
503 \sec Signals;
504 handle {\it signal} {\it act}&specify GDB actions for {\it signal}:\cr
505 \quad print&announce signal\cr
506 \quad noprint&be silent for signal\cr
507 \quad stop&halt execution on signal\cr
508 \quad nostop&do not halt execution\cr
509 \quad pass&allow your program to handle signal\cr
510 \quad nopass&do not allow your program to see signal\cr
511 info signals&show table of signals, GDB action for each\cr
512 \endsec
513
514 \sec Debugging Targets;
515 target {\it type} {\it param}&connect to target machine, process, or file\cr
516 help target&display available targets\cr
517 attach {\it param}&connect to another process\cr
518 detach&release target from GDB control\cr
519 \endsec
520
521 \vfill\eject
522 \sec Controlling GDB;
523 set {\it param} {\it value}&set one of GDB's internal parameters\cr
524 show {\it param}&display current setting of parameter\cr
525 \xtra{\rm Parameters understood by {\tt set} and {\tt show}:}
526 \quad complaint {\it limit}&number of messages on unusual symbols\cr
527 \quad confirm {\it on/off}&enable or disable cautionary queries\cr
528 \quad editing {\it on/off}&control {\tt readline} command-line editing\cr
529 \quad height {\it lpp}&number of lines before pause in display\cr
530 \quad language {\it lang}&Language for GDB expressions ({\tt auto}, {\tt c} or
531 {\tt modula-2})\cr
532 \quad listsize {\it n}&number of lines shown by {\tt list}\cr
533 \quad prompt {\it str}&use {\it str} as GDB prompt\cr
534 \quad radix {\it base}&octal, decimal, or hex number representation\cr
535 \quad verbose {\it on/off}&control messages when loading
536 symbols\cr
537 \quad width {\it cpl}&number of characters before line folded\cr
538 \quad write {\it on/off}&Allow or forbid patching binary, core files
539 (when reopened with {\tt exec} or {\tt core})
540 \cr
541 \quad history $\ldots$\par
542 \quad h $\ldots$&groups with the following options:\cr
543 \quad h exp {\it off/on}&disable/enable {\tt readline} history expansion\cr
544 \quad h file {\it filename}&file for recording GDB command history\cr
545 \quad h size {\it size}&number of commands kept in history list\cr
546 \quad h save {\it off/on}&control use of external file for
547 command history\cr
548 \cr
549 \quad print $\ldots$\par
550 \quad p $\ldots$&groups with the following options:\cr
551 \quad p address {\it on/off}&print memory addresses in stacks,
552 values\cr
553 \quad p array {\it off/on}&compact or attractive format for
554 arrays\cr
555 \quad p demangl {\it on/off}&source (demangled) or internal form for C++
556 symbols\cr
557 \quad p asm-dem {\it on/off}&demangle C++ symbols in
558 machine-instruction output\cr
559 \quad p elements {\it limit}&number of array elements to display\cr
560 \quad p object {\it on/off}&print C++ derived types for objects\cr
561 \quad p pretty {\it off/on}&struct display: compact or indented\cr
562 \quad p union {\it on/off}&display of union members\cr
563 \quad p vtbl {\it off/on}&display of C++ virtual function
564 tables\cr
565 \cr
566 show commands&show last 10 commands\cr
567 show commands {\it n}&show 10 commands around number {\it n}\cr
568 show commands +&show next 10 commands\cr
569 \endsec
570
571 \sec Working Files;
572 file \opt{\it file}&use {\it file} for both symbols and executable;
573 with no arg, discard both\cr
574 core \opt{\it file}&read {\it file} as coredump; or discard\cr
575 exec \opt{\it file}&use {\it file} as executable only; or discard\cr
576 symbol \opt{\it file}&use symbol table from {\it file}; or discard\cr
577 load {\it file}&dynamically link {\it file\/} and add its symbols\cr
578 add-sym {\it file} {\it addr}&read additional symbols from {\it file},
579 dynamically loaded at {\it addr}\cr
580 info files&display working files and targets in use\cr
581 path {\it dirs}&add {\it dirs} to front of path searched for
582 executable and symbol files\cr
583 show path&display executable and symbol file path\cr
584 info share&list names of shared libraries currently loaded\cr
585 \endsec
586
587 \vfill\eject
588 \sec Source Files;
589 dir {\it names}&add directory {\it names} to front of source path\cr
590 dir&clear source path\cr
591 show dir&show current source path\cr
592 \cr
593 list&show next ten lines of source\cr
594 list -&show previous ten lines\cr
595 list {\it lines}&display source surrounding {\it lines},
596 specified as:\cr
597 \quad{\opt{\it file\tt:}\it num}&line number \opt{in named file}\cr
598 \quad{\opt{\it file\tt:}\it function}&beginning of function \opt{in
599 named file}\cr
600 \quad{\tt +\it off}&{\it off} lines after last printed\cr
601 \quad{\tt -\it off}&{\it off} lines previous to last printed\cr
602 \quad{\tt*\it address}&line containing {\it address}\cr
603 list {\it f},{\it l}&from line {\it f} to line {\it l}\cr
604 info line {\it num}&show starting, ending addresses of compiled code for
605 source line {\it num}\cr
606 info source&show name of current source file\cr
607 info sources&list all source files in use\cr
608 forw {\it regex}&search following source lines for {\it regex}\cr
609 rev {\it regex}&search preceding source lines for {\it regex}\cr
610 \endsec
611
612 \sec GDB under GNU Emacs;
613 M-x gdb&run GDB under Emacs\cr
614 \ctl{h} m&describe GDB mode\cr
615 M-s&step one line ({\tt step})\cr
616 M-n&next line ({\tt next})\cr
617 M-i&step one instruction ({\tt stepi})\cr
618 \ctl{c} \ctl{f}&finish current stack frame ({\tt finish})\cr
619 M-c&continue ({\tt cont})\cr
620 M-u&up {\it arg} frames ({\tt up})\cr
621 M-d&down {\it arg} frames ({\tt down})\cr
622 \ctl{x} \&&copy number from point, insert at end\cr
623 \ctl{x} SPC&(in source file) set break at point\cr
624 \endsec
625
626 \sec GDB License;
627 show copying&Display GNU General Public License\cr
628 show warranty&There is NO WARRANTY for GDB. Display full no-warranty
629 statement.\cr
630 \endsec
631
632
633 \vfill
634 {\smrm\parskip=6pt
635 \centerline{Copyright \copyright 1991, 1992, 1993 Free Software Foundation, Inc.}
636 \centerline{Roland Pesch (pesch@cygnus.com)}
637 \centerline{The author assumes no responsibility for any errors on this card.}
638
639 This card may be freely distributed under the terms of the GNU
640 General Public License.
641
642 \centerline{Please contribute to development of this card by
643 annotating it.}
644
645 GDB itself is free software; you are welcome to distribute copies of
646 it under the terms of the GNU General Public License. There is
647 absolutely no warranty for GDB.
648 }
649 \end
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