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1 1181 sfurman
%%%%%%%%%%%%%%%% gdb-refcard.tex %%%%%%%%%%%%%%%%
2
 
3
%This file is TeX source for a reference card describing GDB, the GNU debugger.
4
%Copyright 1991, 1992, 1993, 1996, 1998, 1999, 2000
5
%Free Software Foundation, Inc.
6
%Permission is granted to make and distribute verbatim copies of
7
%this reference provided the copyright notices and permission notices
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%are preserved on all copies.
9
%
10
%TeX markup is a programming language; accordingly this file is source
11
%for a program to generate a reference.
12
%
13
%This program is free software; you can redistribute it and/or modify
14
%it under the terms of the GNU General Public License as published by
15
%the Free Software Foundation; either version 2, or (at your option)
16
%any later version.
17
%
18
%This program is distributed in the hope that it will be useful, but
19
%WITHOUT ANY WARRANTY; without even the implied warranty of
20
%MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
21
%General Public License for more details.
22
%
23
%You can find a copy of the GNU General Public License at the URL
24
%http://www.gnu.org/copyleft/gpl.html; or write to the Free Software
25
%Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26
%
27
%You can contact the maintainer at:  doc@cygnus.com
28
%
29
%                                Documentation Department
30
%                                Cygnus Solutions
31
%                                1325 Chesapeake Terrace
32
%                                Sunnyvale, CA 94089  USA
33
%
34
%                                +1 800 CYGNUS-1
35
%
36
%
37
%
38
% 22-AUG-1993 Andreas Vogel
39
%
40
%   Modifications made in order to handle different papersizes correctly.
41
%   You only have to set the total width and height of the paper, the
42
%   horizontal and vertical margin space measured from *paper edge*
43
%   and the interline and interspec spacing.
44
%   In order to support a new papersize, you have to fiddle with the
45
%   latter four dimensions. Just try out a few values.
46
%   All other values will be computed at process time so it should be
47
%   quite easy to support different paper sizes - only four values to
48
%   guess :-)
49
%
50
%   To find the configuration places, just search for the string
51
%   "CONFIGURATION".
52
%
53
%   Andreas Vogel (av@ssw.de)
54
%
55
%
56
%
57
% Uncomment the following `magnification' command if you want to print
58
% out in a larger font.  Caution!  You may need larger paper.  You had
59
% best avoid using 3-column output if you try this.  See the ``Three
60
% column format'' section below if you want to print in three column
61
% format.
62
%
63
%\magnification=\magstep 1
64
%
65
% NOTE ON INTENTIONAL OMISSIONS: This reference card includes most GDB
66
% commands, but due to space constraints there are some things I chose
67
% to omit.  In general, not all synonyms for commands are covered, nor
68
% all variations of a command.
69
% The GDB-under-Emacs section omits gdb-mode functions without default
70
% keybindings.  GDB startup options are not described.
71
% set print sevenbit-strings, set symbol-reloading omitted.
72
% printsyms, printpsyms, omitted since they're for GDB maintenance primarily
73
% share omitted due to obsolescence
74
% set check range/type omitted at least til code is in GDB.
75
%
76
%-------------------- Three column format -----------------------
77
 
78
%%%% --- To disable three column format, comment out this entire section
79
 
80
% Three-column format for landscape printing
81
 
82
%-------- Papersize defs:
83
 
84
\newdimen\totalwidth \newdimen\totalheight
85
\newdimen\hmargin    \newdimen\vmargin
86
\newdimen\secskip    \newdimen\lskip
87
\newdimen\barwidth   \newdimen\barheight
88
\newdimen\intersecwidth
89
 
90
%%
91
%%  START CONFIGURATION - PAPERSIZE DEFINITIONS
92
%------- Papersize params:
93
%%  US letter paper (8.5x11in)
94
%%
95
\totalwidth=11in    % total width of paper
96
\totalheight=8.5in  % total height of paper
97
\hmargin=.25in      % horizontal margin width
98
\vmargin=.25in      % vertical margin width
99
\secskip=1pc        % space between refcard secs
100
\lskip=2pt          % extra skip between \sec entries
101
%------- end papersize params
102
%%
103
%%  change according to personal taste, not papersize dependent
104
%%
105
\barwidth=.1pt       % width of the cropmark bar
106
\barheight=2pt       % height of the cropmark bar
107
\intersecwidth=0.5em % width between \itmwid and \dfnwid
108
%%
109
%%  END CONFIGURATION - PAPERSIZE DEFINITIONS
110
%%
111
 
112
%%
113
%%  values to be computed - nothing to configure
114
%%
115
\newdimen\fullhsize     % width of area without margins
116
\newdimen\itmwid        % width of item column
117
\newdimen\dfnwid        % width of definition column
118
\newdimen\temp          % only for temporary use
119
 
120
%%
121
%%  adjust the offsets so the margins are measured *from paper edge*
122
%%
123
\hoffset=-1in \advance \hoffset by \hmargin
124
\voffset=-1in \advance \voffset by \vmargin
125
 
126
%%
127
%%  fullhsize = totalwidth - (2 * hmargin)
128
%%
129
\fullhsize=\totalwidth
130
\temp=\hmargin \multiply \temp by 2 \advance \fullhsize by -\temp
131
 
132
%%
133
%%  hsize = (fullhsize - (4 * hmargin) - (2 * barwidth)) / 3
134
%%
135
\hsize=\fullhsize
136
\temp=\hmargin \multiply \temp by 4 \advance \hsize by -\temp
137
\temp=\barwidth \multiply \temp by 2 \advance \hsize by -\temp
138
\divide \hsize by 3
139
 
140
%%
141
%%  vsize = totalheight - (2 * vmargin)
142
%%
143
\vsize=\totalheight
144
\temp=\vmargin \multiply \temp by 2 \advance \vsize by -\temp
145
 
146
%%
147
%%  itmwid = (hsize - intersecwidth) * 1/3
148
%%  dfnwid = (hsize - intersecwidth) * 2/3
149
%%
150
\temp=\hsize \advance \temp by -\intersecwidth \divide \temp by 3
151
\itmwid=\temp
152
\dfnwid=\hsize \advance \dfnwid by -\itmwid
153
 
154
%-------- end papersize defs
155
 
156
 
157
\def\fulline{\hbox to \fullhsize}
158
\let\lcr=L \newbox\leftcolumn\newbox\centercolumn
159
\output={\if L\lcr
160
            \global\setbox\leftcolumn=\columnbox \global\let\lcr=C
161
         \else
162
            \if C\lcr
163
               \global\setbox\centercolumn=\columnbox \global\let\lcr=R
164
            \else \tripleformat \global\let\lcr=L
165
            \fi
166
         \fi
167
%         \ifnum\outputpenalty>-20000 \else\dosupereject\fi
168
      }
169
 
170
%%
171
%%  START CONFIGURATION - ALTERNATIVE FOLDING GUIDES
172
%%
173
%%  For NO printed folding guide,
174
%%  comment out other \def\vdecor's and uncomment:
175
 
176
%\def\vdecor{\hskip\hmargin plus1fil\hskip\barwidth plus1fil\hskip\hmargin plus1fil}
177
 
178
%%  For SOLID LINE folding guide,
179
%%  comment out other \def\vdecor's and uncomment:
180
 
181
%\def\vdecor{\hskip\hmargin plus1fil \vrule width \barwidth \hskip\hmargin plus1fil}
182
 
183
%%  For SMALL MARKS NEAR TOP AND BOTTOM as folding guide,
184
%%  comment out other \def\vdecor's and uncomment:
185
 
186
\def\vdecor{\hskip\hmargin plus1fil
187
\vbox to \vsize{\hbox to \barwidth{\vrule height\barheight width\barwidth}\vfill
188
\hbox to \barwidth{\vrule height\barheight width\barwidth}}%THIS PERCENT SIGN IS ESSENTIAL
189
\hskip\hmargin plus1fil}
190
 
191
%%
192
%%  END CONFIGURATION - ALTERNATIVES FOR FOLDING GUIDES
193
%%
194
 
195
\def\tripleformat{\shipout\vbox{\fulline{\box\leftcolumn\vdecor
196
                                         \box\centercolumn\vdecor
197
                                         \columnbox}
198
                               }
199
                 \advancepageno}
200
\def\columnbox{\leftline{\pagebody}}
201
\def\bye{\par\vfill
202
         \supereject
203
         \if R\lcr \null\vfill\eject\fi
204
         \end}
205
 
206
%-------------------- end three column format -----------------------
207
 
208
%-------------------- Computer Modern font defs: --------------------
209
\font\bbf=cmbx10
210
\font\vbbf=cmbx12
211
\font\smrm=cmr6
212
\font\brm=cmr10
213
\font\rm=cmr7
214
\font\it=cmti7
215
\font\tt=cmtt8
216
%-------------------- end font defs ---------------------------------
217
 
218
%
219
\hyphenpenalty=5000\tolerance=2000\raggedright\raggedbottom
220
\normalbaselineskip=9pt\baselineskip=9pt
221
%
222
\parindent=0pt
223
\parskip=0pt
224
\footline={\vbox to0pt{\hss}}
225
%
226
\def\ctl#1{{\tt C-#1}}
227
\def\opt#1{{\brm[{\rm #1}]}}
228
\def\xtra#1{\noalign{\smallskip{\tt#1}}}
229
%
230
\long\def\sec#1;#2\endsec{\vskip \secskip
231
\halign{%
232
%COL 1 (of halign):
233
\vtop{\hsize=\itmwid\tt
234
##\par\vskip \lskip }\hfil
235
%COL 2 (of halign):
236
&\vtop{\hsize=\dfnwid\hangafter=1\hangindent=\intersecwidth
237
\rm ##\par\vskip \lskip}\cr
238
%Tail of \long\def fills in halign body with \sec args:
239
\noalign{{\bbf #1}\vskip \lskip}
240
#2
241
}
242
}
243
 
244
{\vbbf GDB QUICK REFERENCE}\hfil{\smrm GDB Version 5}\qquad
245
 
246
\sec Essential Commands;
247
gdb {\it program} \opt{{\it core}}&debug {\it program} \opt{using
248
coredump {\it core}}\cr
249
b \opt{\it file\tt:}{\it function}&set breakpoint at {\it function} \opt{in \it file}\cr
250
run \opt{{\it arglist}}&start your program \opt{with {\it arglist}}\cr
251
bt& backtrace: display program stack\cr
252
p {\it expr}&display the value of an expression\cr
253
c &continue running your program\cr
254
n &next line, stepping over function calls\cr
255
s &next line, stepping into function calls\cr
256
\endsec
257
 
258
\sec Starting GDB;
259
gdb&start GDB, with no debugging files\cr
260
gdb {\it program}&begin debugging {\it program}\cr
261
gdb {\it program core}&debug coredump {\it core} produced by {\it
262
program}\cr
263
gdb --help&describe command line options\cr
264
\endsec
265
 
266
\sec Stopping GDB;
267
quit&exit GDB; also {\tt q} or {\tt EOF} (eg \ctl{d})\cr
268
INTERRUPT&(eg \ctl{c}) terminate current command, or send to running process\cr
269
\endsec
270
 
271
\sec Getting Help;
272
help&list classes of commands\cr
273
help {\it class}&one-line descriptions for commands in {\it class}\cr
274
help {\it command}&describe {\it command}\cr
275
\endsec
276
 
277
\sec Executing your Program;
278
run {\it arglist}&start your program with {\it arglist}\cr
279
run&start your program with current argument list\cr
280
run $\ldots$ <{\it inf} >{\it outf}&start your program with input, output
281
redirected\cr
282
\cr
283
kill&kill running program\cr
284
\cr
285
tty {\it dev}&use {\it dev} as stdin and stdout for next {\tt run}\cr
286
set args {\it arglist}&specify {\it arglist} for next
287
{\tt run}\cr
288
set args&specify empty argument list\cr
289
show args&display argument list\cr
290
\cr
291
show env&show all environment variables\cr
292
show env {\it var}&show value of environment variable {\it var}\cr
293
set env {\it var} {\it string}&set environment variable {\it var}\cr
294
unset env {\it var}&remove {\it var} from environment\cr
295
\endsec
296
 
297
\sec Shell Commands;
298
cd {\it dir}&change working directory to {\it dir}\cr
299
pwd&Print working directory\cr
300
make $\ldots$&call ``{\tt make}''\cr
301
shell {\it cmd}&execute arbitrary shell command string\cr
302
\endsec
303
 
304
\vfill
305
\line{\smrm \opt{ } surround optional arguments \hfill $\ldots$ show
306
one or more arguments}
307
\vskip\baselineskip
308
\centerline{\smrm \copyright 1998,2000 Free Software Foundation, Inc.\qquad Permissions on back}
309
\eject
310
\sec Breakpoints and Watchpoints;
311
break \opt{\it file\tt:}{\it line}\par
312
b \opt{\it file\tt:}{\it line}&set breakpoint at {\it line} number \opt{in \it file}\par
313
eg:\quad{\tt break main.c:37}\quad\cr
314
break \opt{\it file\tt:}{\it func}&set breakpoint at {\it
315
func} \opt{in \it file}\cr
316
break +{\it offset}\par
317
break -{\it offset}&set break at {\it offset} lines from current stop\cr
318
break *{\it addr}&set breakpoint at address {\it addr}\cr
319
break&set breakpoint at next instruction\cr
320
break $\ldots$ if {\it expr}&break conditionally on nonzero {\it expr}\cr
321
cond {\it n} \opt{\it expr}&new conditional expression on breakpoint
322
{\it n}; make unconditional if no {\it expr}\cr
323
tbreak $\ldots$&temporary break; disable when reached\cr
324
rbreak {\it regex}&break on all functions matching {\it regex}\cr
325
watch {\it expr}&set a watchpoint for expression {\it expr}\cr
326
catch {\it event}&break at {\it event}, which may be {\tt catch}, {\tt throw},
327
{\tt exec}, {\tt fork}, {\tt vfork}, {\tt load}, or {\tt unload}.\cr
328
\cr
329
info break&show defined breakpoints\cr
330
info watch&show defined watchpoints\cr
331
\cr
332
clear&delete breakpoints at next instruction\cr
333
clear \opt{\it file\tt:}{\it fun}&delete breakpoints at entry to {\it fun}()\cr
334
clear \opt{\it file\tt:}{\it line}&delete breakpoints on source line \cr
335
delete \opt{{\it n}}&delete breakpoints
336
\opt{or breakpoint {\it n}}\cr
337
\cr
338
disable \opt{{\it n}}&disable breakpoints
339
\opt{or breakpoint {\it n}}
340
\cr
341
enable \opt{{\it n}}&enable breakpoints
342
\opt{or breakpoint {\it n}}
343
\cr
344
enable once \opt{{\it n}}&enable breakpoints \opt{or breakpoint {\it n}};
345
disable again when reached
346
\cr
347
enable del \opt{{\it n}}&enable breakpoints \opt{or breakpoint {\it n}};
348
delete when reached
349
\cr
350
\cr
351
ignore {\it n} {\it count}&ignore breakpoint {\it n}, {\it count}
352
times\cr
353
\cr
354
commands {\it n}\par
355
\qquad \opt{\tt silent}\par
356
\qquad {\it command-list}&execute GDB {\it command-list} every time breakpoint {\it n} is reached. \opt{{\tt silent} suppresses default
357
display}\cr
358
end&end of {\it command-list}\cr
359
\endsec
360
 
361
\sec Program Stack;
362
backtrace \opt{\it n}\par
363
bt \opt{\it n}&print trace of all frames in stack; or of {\it n}
364
frames---innermost if {\it n}{\tt >0}, outermost if {\it n}{\tt <0}\cr
365
frame \opt{\it n}&select frame number {\it n} or frame at address {\it
366
n}; if no {\it n}, display current frame\cr
367
up {\it n}&select frame {\it n} frames up\cr
368
down {\it n}&select frame {\it n} frames down\cr
369
info frame \opt{\it addr}&describe selected frame, or frame at
370
{\it addr}\cr
371
info args&arguments of selected frame\cr
372
info locals&local variables of selected frame\cr
373
info reg \opt{\it rn}$\ldots$\par
374
info all-reg \opt{\it rn}&register values \opt{for regs {\it rn\/}} in
375
selected frame; {\tt all-reg} includes floating point\cr
376
\endsec
377
 
378
\vfill\eject
379
\sec Execution Control;
380
continue \opt{\it count}\par
381
c \opt{\it count}&continue running; if {\it count} specified, ignore
382
this breakpoint next {\it count} times\cr
383
\cr
384
step \opt{\it count}\par
385
s \opt{\it count}&execute until another line reached; repeat {\it count} times if
386
specified\cr
387
stepi \opt{\it count}\par
388
si \opt{\it count}&step by machine instructions rather than source
389
lines\cr
390
\cr
391
next \opt{\it count}\par
392
n \opt{\it count}&execute next line, including any function calls\cr
393
nexti \opt{\it count}\par
394
ni \opt{\it count}&next machine instruction rather than source
395
line\cr
396
\cr
397
until \opt{\it location}&run until next instruction (or {\it
398
location})\cr
399
finish&run until selected stack frame returns\cr
400
return \opt{\it expr}&pop selected stack frame without executing
401
\opt{setting return value}\cr
402
signal {\it num}&resume execution with signal {\it s} (none if {\tt 0})\cr
403
jump {\it line}\par
404
jump *{\it address}&resume execution at specified {\it line} number or
405
{\it address}\cr
406
set var={\it expr}&evaluate {\it expr} without displaying it; use for
407
altering program variables\cr
408
\endsec
409
 
410
\sec Display;
411
print \opt{\tt/{\it f}\/} \opt{\it expr}\par
412
p \opt{\tt/{\it f}\/} \opt{\it expr}&show value of {\it expr} \opt{or
413
last value \tt \$} according to format {\it f}:\cr
414
\qquad x&hexadecimal\cr
415
\qquad d&signed decimal\cr
416
\qquad u&unsigned decimal\cr
417
\qquad o&octal\cr
418
\qquad t&binary\cr
419
\qquad a&address, absolute and relative\cr
420
\qquad c&character\cr
421
\qquad f&floating point\cr
422
call \opt{\tt /{\it f}\/} {\it expr}&like {\tt print} but does not display
423
{\tt void}\cr
424
x \opt{\tt/{\it Nuf}\/} {\it expr}&examine memory at address {\it expr};
425
optional format spec follows slash\cr
426
\quad {\it N}&count of how many units to display\cr
427
\quad {\it u}&unit size; one of\cr
428
&{\tt\qquad b}\ individual bytes\cr
429
&{\tt\qquad h}\ halfwords (two bytes)\cr
430
&{\tt\qquad w}\ words (four bytes)\cr
431
&{\tt\qquad g}\ giant words (eight bytes)\cr
432
\quad {\it f}&printing format.  Any {\tt print} format, or\cr
433
&{\tt\qquad s}\ null-terminated string\cr
434
&{\tt\qquad i}\ machine instructions\cr
435
disassem \opt{\it addr}&display memory as machine instructions\cr
436
\endsec
437
 
438
\sec Automatic Display;
439
display \opt{\tt/\it f\/} {\it expr}&show value of {\it expr} each time
440
program stops \opt{according to format {\it f}\/}\cr
441
display&display all enabled expressions on list\cr
442
undisplay {\it n}&remove number(s) {\it n} from list of
443
automatically displayed expressions\cr
444
disable disp {\it n}&disable display for expression(s) number {\it
445
n}\cr
446
enable disp {\it n}&enable display for expression(s) number {\it
447
n}\cr
448
info display&numbered list of display expressions\cr
449
\endsec
450
 
451
\vfill\eject
452
 
453
\sec Expressions;
454
{\it expr}&an expression in C, C++, or Modula-2 (including function calls), or:\cr
455
{\it addr\/}@{\it len}&an array of {\it len} elements beginning at {\it
456
addr}\cr
457
{\it file}::{\it nm}&a variable or function {\it nm} defined in {\it
458
file}\cr
459
$\tt\{${\it type}$\tt\}${\it addr}&read memory at {\it addr} as specified
460
{\it type}\cr
461
\$&most recent displayed value\cr
462
\${\it n}&{\it n}th displayed value\cr
463
\$\$&displayed value previous to \$\cr
464
\$\${\it n}&{\it n}th displayed value back from \$\cr
465
\$\_&last address examined with {\tt x}\cr
466
\$\_\_&value at address \$\_\cr
467
\${\it var}&convenience variable; assign any value\cr
468
\cr
469
show values \opt{{\it n}}&show last 10 values \opt{or surrounding
470
\${\it n}}\cr
471
show conv&display all convenience variables\cr
472
\endsec
473
 
474
\sec Symbol Table;
475
info address {\it s}&show where symbol {\it s} is stored\cr
476
info func \opt{\it regex}&show names, types of defined functions
477
(all, or matching {\it regex})\cr
478
info var \opt{\it regex}&show names, types of global variables (all,
479
or matching {\it regex})\cr
480
whatis \opt{\it expr}\par
481
ptype \opt{\it expr}&show data type of {\it expr} \opt{or \tt \$}
482
without evaluating; {\tt ptype} gives more detail\cr
483
ptype {\it type}&describe type, struct, union, or enum\cr
484
\endsec
485
 
486
\sec GDB Scripts;
487
source {\it script}&read, execute GDB commands from file {\it
488
script}\cr
489
\cr
490
define {\it cmd}\par
491
\qquad {\it command-list}&create new GDB command {\it cmd};
492
execute script defined by {\it command-list}\cr
493
end&end of {\it command-list}\cr
494
document {\it cmd}\par
495
\qquad {\it help-text}&create online documentation
496
for new GDB command {\it cmd}\cr
497
end&end of {\it help-text}\cr
498
\endsec
499
 
500
\sec Signals;
501
handle {\it signal} {\it act}&specify GDB actions for {\it signal}:\cr
502
\quad print&announce signal\cr
503
\quad noprint&be silent for signal\cr
504
\quad stop&halt execution on signal\cr
505
\quad nostop&do not halt execution\cr
506
\quad pass&allow your program to handle signal\cr
507
\quad nopass&do not allow your program to see signal\cr
508
info signals&show table of signals, GDB action for each\cr
509
\endsec
510
 
511
\sec Debugging Targets;
512
target {\it type} {\it param}&connect to target machine, process, or file\cr
513
help target&display available targets\cr
514
attach {\it param}&connect to another process\cr
515
detach&release target from GDB control\cr
516
\endsec
517
 
518
\vfill\eject
519
\sec Controlling GDB;
520
set {\it param} {\it value}&set one of GDB's internal parameters\cr
521
show {\it param}&display current setting of parameter\cr
522
\xtra{\rm Parameters understood by {\tt set} and {\tt show}:}
523
\quad complaint {\it limit}&number of messages on unusual symbols\cr
524
\quad confirm {\it on/off}&enable or disable cautionary queries\cr
525
\quad editing {\it on/off}&control {\tt readline} command-line editing\cr
526
\quad height {\it lpp}&number of lines before pause in display\cr
527
\quad language {\it lang}&Language for GDB expressions ({\tt auto}, {\tt c} or
528
{\tt modula-2})\cr
529
\quad listsize {\it n}&number of lines shown by {\tt list}\cr
530
\quad prompt {\it str}&use {\it str} as GDB prompt\cr
531
\quad radix {\it base}&octal, decimal, or hex number representation\cr
532
\quad verbose {\it on/off}&control messages when loading
533
symbols\cr
534
\quad width {\it cpl}&number of characters before line folded\cr
535
\quad write {\it on/off}&Allow or forbid patching binary, core files
536
(when reopened with {\tt exec} or {\tt core})
537
\cr
538
\quad history $\ldots$\par
539
\quad h $\ldots$&groups with the following options:\cr
540
\quad h exp {\it off/on}&disable/enable {\tt readline} history expansion\cr
541
\quad h file {\it filename}&file for recording GDB command history\cr
542
\quad h size {\it size}&number of commands kept in history list\cr
543
\quad h save {\it off/on}&control use of external file for
544
command history\cr
545
\cr
546
\quad print $\ldots$\par
547
\quad p $\ldots$&groups with the following options:\cr
548
\quad p address {\it on/off}&print memory addresses in stacks,
549
values\cr
550
\quad p  array {\it off/on}&compact or attractive format for
551
arrays\cr
552
\quad p demangl {\it on/off}&source (demangled) or internal form for C++
553
symbols\cr
554
\quad p asm-dem {\it on/off}&demangle C++ symbols in
555
machine-instruction output\cr
556
\quad p elements {\it limit}&number of array elements to display\cr
557
\quad p object {\it on/off}&print C++ derived types for objects\cr
558
\quad p pretty {\it off/on}&struct display: compact or indented\cr
559
\quad p union {\it on/off}&display of union members\cr
560
\quad p vtbl {\it off/on}&display of C++ virtual function
561
tables\cr
562
\cr
563
show commands&show last 10 commands\cr
564
show commands {\it n}&show 10 commands around number {\it n}\cr
565
show commands +&show next 10 commands\cr
566
\endsec
567
 
568
\sec Working Files;
569
file \opt{\it file}&use {\it file} for both symbols and executable;
570
with no arg, discard both\cr
571
core \opt{\it file}&read {\it file} as coredump; or discard\cr
572
exec \opt{\it file}&use {\it file} as executable only; or discard\cr
573
symbol \opt{\it file}&use symbol table from {\it file}; or discard\cr
574
load {\it file}&dynamically link {\it file\/} and add its symbols\cr
575
add-sym {\it file} {\it addr}&read additional symbols from {\it file},
576
dynamically loaded at {\it addr}\cr
577
info files&display working files and targets in use\cr
578
path {\it dirs}&add {\it dirs} to front of path searched for
579
executable and symbol files\cr
580
show path&display executable and symbol file path\cr
581
info share&list names of shared libraries currently loaded\cr
582
\endsec
583
 
584
\vfill\eject
585
\sec Source Files;
586
dir {\it names}&add directory {\it names} to front of source path\cr
587
dir&clear source path\cr
588
show dir&show current source path\cr
589
\cr
590
list&show next ten lines of source\cr
591
list -&show previous ten lines\cr
592
list {\it lines}&display source surrounding {\it lines},
593
specified as:\cr
594
\quad{\opt{\it file\tt:}\it num}&line number \opt{in named file}\cr
595
\quad{\opt{\it file\tt:}\it function}&beginning of function \opt{in
596
named file}\cr
597
\quad{\tt +\it off}&{\it off} lines after last printed\cr
598
\quad{\tt -\it off}&{\it off} lines previous to last printed\cr
599
\quad{\tt*\it address}&line containing {\it address}\cr
600
list {\it f},{\it l}&from line {\it f} to line {\it l}\cr
601
info line {\it num}&show starting, ending addresses of compiled code for
602
source line {\it num}\cr
603
info source&show name of current source file\cr
604
info sources&list all source files in use\cr
605
forw {\it regex}&search following source lines for {\it regex}\cr
606
rev {\it regex}&search preceding source lines for {\it regex}\cr
607
\endsec
608
 
609
\sec GDB under GNU Emacs;
610
M-x gdb&run GDB under Emacs\cr
611
\ctl{h} m&describe GDB mode\cr
612
M-s&step one line ({\tt step})\cr
613
M-n&next line ({\tt next})\cr
614
M-i&step one instruction ({\tt stepi})\cr
615
\ctl{c} \ctl{f}&finish current stack frame ({\tt finish})\cr
616
M-c&continue ({\tt cont})\cr
617
M-u&up {\it arg} frames ({\tt up})\cr
618
M-d&down {\it arg} frames ({\tt down})\cr
619
\ctl{x} \&&copy number from point, insert at end\cr
620
\ctl{x} SPC&(in source file) set break at point\cr
621
\endsec
622
 
623
\sec GDB License;
624
show copying&Display GNU General Public License\cr
625
show warranty&There is NO WARRANTY for GDB.  Display full no-warranty
626
statement.\cr
627
\endsec
628
 
629
 
630
\vfill
631
{\smrm\parskip=6pt
632
Copyright \copyright 1991,'92,'93,'98,2000 Free Software Foundation, Inc.
633
Author: Roland H. Pesch
634
 
635
The author assumes no responsibility for any errors on this card.
636
 
637
This card may be freely distributed under the terms of the GNU
638
General Public License.
639
 
640
Please contribute to development of this card by
641
annotating it.  Improvements can be sent to bug-gdb@gnu.org.
642
 
643
GDB itself is free software; you are welcome to distribute copies of
644
it under the terms of the GNU General Public License.  There is
645
absolutely no warranty for GDB.
646
}
647
\end

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