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1 | %This file is TeX source for a reference card describing GDB, the GNU debugger. |
2 | %$Id$ | |
3 | %Copyright (C) 1991 Free Software Foundation, Inc. | |
4 | %Permission is granted to make and distribute verbatim copies of | |
5 | %this reference provided the copyright notices and permission notices | |
6 | %are preserved on all copies. | |
7 | % | |
8 | %TeX markup is a programming language; accordingly this file is source | |
9 | %for a program to generate a reference. | |
10 | % | |
11 | %This program is free software; you can redistribute it and/or modify | |
12 | %it under the terms of the GNU General Public License as published by | |
13 | %the Free Software Foundation; either version 1, or (at your option) | |
14 | %any later version. | |
15 | % | |
16 | %This program is distributed in the hope that it will be useful, but | |
17 | %WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | %MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | %General Public License for more details. | |
20 | % | |
21 | %You can find a copy of the GNU General Public License in the GDB | |
22 | %manual; or write to the Free Software Foundation, Inc., | |
23 | %675 Mass Ave, Cambridge, MA 02139, USA. | |
24 | % | |
25 | %You can contact the author as: pesch@cygnus.com | |
26 | % | |
27 | % Roland Pesch | |
28 | % Cygnus Support | |
c98c5fd4 DZ |
29 | % 1937 Landings Drive |
30 | % Mountain View, CA 94043 USA | |
5ac0315a | 31 | % |
c98c5fd4 | 32 | % +1 415 903 1400 |
5ac0315a RP |
33 | % |
34 | % Cygnus Support is an organization devoted to commercial | |
35 | % support of free software. For general information | |
36 | % contact ``info@cygnus.com'' | |
37 | % | |
38 | % NOTE ON INTENTIONAL OMISSIONS: This reference card includes most GDB | |
39 | % commands, but due to space constraints there are some things I chose | |
40 | % to omit. In general, not all synonyms for commands are covered, nor | |
41 | % all variations of a command. | |
42 | % The GDB-under-Emacs section omits gdb-mode functions without default | |
43 | % keybindings. GDB startup options are not described. | |
44 | % set print sevenbit-strings, set symbol-reloading omitted. | |
45 | % printsyms, printpsyms, omitted since they're for GDB maintenance primarily | |
46 | % share omitted due to obsolescence | |
47 | % set check range/type omitted at least til code is in GDB. | |
48 | % | |
49 | \input epsf | |
50 | \epsfxsize=1.75in | |
51 | {% | |
52 | \def\$#1${{#1}}% Kluge: collect RCS revision info without $...$ | |
53 | \xdef\manvers{\$Revision$}% | |
54 | }% | |
d98a0a44 RP |
55 | %-------------------- Three column format ----------------------- |
56 | ||
57 | %%%% --- To disable three column format, comment out this entire section | |
58 | ||
59 | % Three-column format for landscape printing on 8.5x11 paper | |
60 | ||
61 | % We want output .25 inch *from paper edge*; i.e. -.75in from TeX default | |
62 | \hoffset=-0.8in \voffset=-0.75in | |
63 | \newdimen\fullhsize | |
64 | \fullhsize=10.5in \hsize=3.3in | |
65 | \def\fulline{\hbox to \fullhsize} | |
66 | \let\lcr=L \newbox\leftcolumn\newbox\centercolumn | |
67 | \output={\if L\lcr | |
68 | \global\setbox\leftcolumn=\columnbox \global\let\lcr=C | |
69 | \else | |
70 | \if C\lcr | |
71 | \global\setbox\centercolumn=\columnbox \global\let\lcr=R | |
72 | \else \tripleformat \global\let\lcr=L | |
73 | \fi | |
74 | \fi | |
75 | % \ifnum\outputpenalty>-20000 \else\dosupereject\fi | |
76 | } | |
77 | % | |
78 | %ALTERNATIVE FOLDING GUIDES: | |
79 | % | |
80 | %For NO printed folding guide, comment out other \def\vdecor's and uncomment: | |
81 | %\def\vdecor{\hskip .2in plus1fil} | |
82 | % | |
83 | %For SOLID LINE folding guide, comment out other \def\vdecor's and uncomment: | |
84 | %\def\vdecor{\hskip .1in plus1fil \vrule width .1pt \hskip .1in plus1fil} | |
85 | % | |
86 | %For SMALL MARKS NEAR TOP AND BOTTOM as folding guide, | |
87 | %comment out other \def\vdecor's and uncomment: | |
88 | \def\vdecor{\hskip .1in plus1fil | |
89 | \vbox to \vsize{\hbox to .1pt{\vrule height 2pt width .1pt}\vfill | |
90 | \hbox to .1pt{\vrule height 2pt width .1pt}} | |
91 | \hskip .1in plus1fil} | |
92 | % | |
93 | %END OF ALTERNATIVES FOR FOLDING GUIDES | |
94 | % | |
95 | \def\tripleformat{\shipout\vbox{\fulline{\box\leftcolumn\vdecor | |
96 | \box\centercolumn\vdecor | |
97 | \columnbox} | |
98 | } | |
99 | \advancepageno} | |
100 | \def\columnbox{\leftline{\pagebody}} | |
101 | \def\bye{\par\vfill | |
102 | \supereject | |
103 | \if R\lcr \null\vfill\eject\fi | |
104 | \end} | |
105 | ||
106 | %-------------------- end three column format ----------------------- | |
107 | ||
108 | %-------------------- PostScript (K Berry names) font defs: -------------- | |
109 | \font\bbf=ptmb at 10pt | |
110 | \font\vbbf=ptmb at 12pt | |
111 | \font\smrm=ptmr at 6pt | |
112 | \font\brm=ptmr at 10pt | |
113 | \font\rm=ptmr at 8pt | |
114 | \font\it=ptmri at 8pt | |
115 | \font\tt=pcrr at 8pt | |
116 | % Used only for copyright, replacing plain TeX macro. | |
117 | \font\sym=psyr at 7pt | |
118 | \def\copyright{{\sym\char'323}} | |
119 | %-------------------- end font defs --------------------------------- | |
120 | ||
5ac0315a RP |
121 | % |
122 | \vsize=8in | |
123 | \hyphenpenalty=5000\tolerance=2000\raggedright\raggedbottom | |
124 | \normalbaselineskip=9pt\baselineskip=9pt | |
125 | % | |
126 | \parindent=0pt | |
127 | \parskip=0pt | |
128 | \footline={\vbox to0pt{\hss}} | |
129 | % | |
130 | \def\ctl#1{{\tt C-#1}} | |
131 | \def\opt#1{{\brm[{\rm #1}]}} | |
132 | \def\xtra#1{\noalign{\smallskip{\tt#1}}} | |
133 | % | |
134 | \long\def\sec#1;#2\endsec{\vskip 1pc | |
135 | \halign{% | |
136 | %COL 1 (of halign): | |
137 | \vtop{\hsize=1.1in\tt | |
138 | ##\par\vskip 2pt }\hfil | |
139 | %COL 2 (of halign): | |
140 | &\vtop{\hsize=2.1in\hangafter=1\hangindent=0.5em | |
141 | \rm ##\par\vskip 2pt}\cr | |
142 | %Tail of \long\def fills in halign body with \sec args: | |
143 | \noalign{{\bbf #1}\vskip 2pt} | |
144 | #2 | |
145 | } | |
146 | } | |
147 | {\vbbf GDB QUICK REFERENCE}\hfil{\smrm GDB Version 4} | |
148 | {\baselineskip=0pt | |
149 | \vskip 7.15 in | |
150 | \hskip .33in\epsfbox{cyglogo.eps} | |
151 | \vskip -7.82 in} | |
152 | \vskip 3pt | |
153 | ||
154 | \sec Essential Commands; | |
155 | gdb {\it program} \opt{{\it core}}&debug {\it program} \opt{using | |
156 | coredump {\it core}}\cr | |
157 | b \opt{\it file\tt:}{\it function}&set breakpoint at {\it function} \opt{in \it file}\cr | |
158 | run \opt{{\it arglist}}&start your program \opt{with {\it arglist}}\cr | |
159 | bt& backtrace: display program stack\cr | |
160 | p {\it expr}&display the value of an expression\cr | |
161 | c &continue running your program\cr | |
162 | n &next line, stepping over function calls\cr | |
163 | s &next line, stepping into function calls\cr | |
164 | \endsec | |
165 | ||
166 | \sec Starting GDB; | |
167 | gdb&start GDB, with no debugging files\cr | |
168 | gdb {\it program}&begin debugging {\it program}\cr | |
169 | gdb {\it program core}&debug coredump {\it core} produced by {\it | |
170 | program}\cr | |
d98a0a44 | 171 | gdb --help&describe command line options\cr |
5ac0315a RP |
172 | \endsec |
173 | ||
174 | \sec Stopping GDB; | |
175 | quit&exit GDB; also {\tt q} or {\tt EOF} (eg \ctl{d})\cr | |
176 | INTERRUPT&(eg \ctl{c}) terminate current command, or send to running process\cr | |
177 | \endsec | |
178 | ||
179 | \sec Getting Help; | |
180 | help&list classes of commands\cr | |
181 | help {\it class}&one-line descriptions for commands in {\it class}\cr | |
182 | help {\it command}&describe {\it command}\cr | |
183 | \endsec | |
184 | ||
185 | \sec Executing your Program; | |
186 | run {\it arglist}&start your program with {\it arglist}\cr | |
187 | run&start your program with current argument list\cr | |
188 | run $\ldots$ <{\it inf} >{\it outf}&start your program with input, output | |
189 | redirected\cr | |
190 | \cr | |
191 | kill&kill running program\cr | |
192 | \cr | |
193 | tty {\it dev}&use {\it dev} as stdin and stdout for next {\tt run}\cr | |
194 | set args {\it arglist}&specify {\it arglist} for next | |
195 | {\tt run}\cr | |
196 | set args&specify empty argument list\cr | |
197 | show args&display argument list\cr | |
198 | \cr | |
199 | show environment&show all environment variables\cr | |
200 | show env {\it var}&show value of environment variable {\it var}\cr | |
201 | set env {\it var} {\it string}&set environment variable {\it var}\cr | |
202 | unset env {\it var}&remove {\it var} from environment\cr | |
203 | \endsec | |
204 | ||
205 | \sec Shell Commands; | |
206 | cd {\it dir}&change working directory to {\it dir}\cr | |
207 | pwd&Print working directory\cr | |
208 | make $\ldots$&call ``{\tt make}''\cr | |
209 | shell {\it cmd}&execute arbitrary shell command string\cr | |
210 | \endsec | |
211 | ||
212 | \vfill | |
213 | \eject | |
214 | \sec Breakpoints and Watchpoints; | |
215 | break \opt{\it file\tt:}{\it line}\par | |
216 | b \opt{\it file\tt:}{\it line}&set breakpoint at {\it line} number \opt{in \it file}\par | |
217 | eg:\quad{\tt break main.c:37}\quad\cr | |
218 | break \opt{\it file\tt:}{\it function}&set breakpoint at {\it | |
219 | function} \opt{in \it file}\cr | |
220 | break +{\it offset}\par | |
221 | break -{\it offset}&set break at {\it offset} lines from current stop\cr | |
222 | break *{\it addr}&set breakpoint at address {\it addr}\cr | |
223 | break&set breakpoint at next instruction\cr | |
224 | break $\ldots$ if {\it expr}&break conditionally on nonzero {\it expr}\cr | |
225 | cond {\it n} \opt{\it expr}&new conditional expression on breakpoint | |
226 | {\it n}; make unconditional if no {\it expr}\cr | |
227 | tbreak $\ldots$&temporary break; disable when reached\cr | |
228 | rbreak {\it regex}&break on all functions matching {\it regex}\cr | |
229 | watch {\it expr}&set a watchpoint for expression {\it expr}\cr | |
230 | catch {\it x}&break at C++ handler for exception {\it x}\cr | |
231 | \cr | |
232 | info break&show defined breakpoints\cr | |
233 | info watch&show defined watchpoints\cr | |
234 | \cr | |
235 | clear&delete breakpoints at next instruction\cr | |
236 | clear \opt{\it file\tt:}{\it fun}&delete breakpoints at entry to {\it fun}()\cr | |
237 | clear \opt{\it file\tt:}{\it line}&delete breakpoints on source line \cr | |
238 | delete \opt{{\it n}}&delete breakpoints | |
239 | \opt{or breakpoint {\it n}}\cr | |
240 | \cr | |
241 | disable \opt{{\it n}}&disable breakpoints | |
242 | \opt{or breakpoint {\it n}} | |
243 | \cr | |
244 | enable \opt{{\it n}}&enable breakpoints | |
245 | \opt{or breakpoint {\it n}} | |
246 | \cr | |
247 | enable once \opt{{\it n}}&enable breakpoints \opt{or breakpoint {\it n}}; | |
248 | disable again when reached | |
249 | \cr | |
250 | enable del \opt{{\it n}}&enable breakpoints \opt{or breakpoint {\it n}}; | |
251 | delete when reached | |
252 | \cr | |
253 | \cr | |
254 | ignore {\it n} {\it count}&ignore breakpoint {\it n}, {\it count} | |
255 | times\cr | |
256 | \cr | |
257 | commands {\it n}\par | |
258 | \qquad \opt{\tt silent}\par | |
259 | \qquad {\it command-list}&execute GDB {\it command-list} every time breakpoint {\it n} is reached. \opt{{\tt silent} suppresses default | |
260 | display}\cr | |
261 | end&end of {\it command-list}\cr | |
262 | \endsec | |
263 | ||
264 | \sec Program Stack; | |
265 | backtrace \opt{\it n}\par | |
266 | bt \opt{\it n}&print trace of all frames in stack; or of {\it n} | |
267 | frames---innermost if {\it n}{\tt >0}, outermost if {\it n}{\tt <0}\cr | |
268 | frame \opt{\it n}&select frame number {\it n} or frame at address {\it | |
269 | n}; if no {\it n}, display current frame\cr | |
270 | up {\it n}&select frame {\it n} frames up\cr | |
271 | down {\it n}&select frame {\it n} frames down\cr | |
272 | info frame \opt{\it addr}&describe selected frame, or frame at | |
273 | {\it addr}\cr | |
274 | info args&arguments of selected frame\cr | |
275 | info locals&local variables of selected frame\cr | |
276 | info reg \opt{\it rn}\par | |
277 | info all-reg \opt{\it rn}®ister values \opt{for reg {\it rn\/}} in | |
278 | selected frame; {\tt all-reg} includes floating point\cr | |
279 | info catch&exception handlers active in selected frame\cr | |
280 | \endsec | |
281 | ||
282 | \vfill | |
283 | \line{\smrm \opt{ } surround optional arguments.\hfil $\ldots$ show | |
284 | one or more arguments} | |
285 | \vskip\baselineskip | |
286 | \centerline{\smrm \copyright 1991, 1992 Free Software Foundation, Inc.\qquad Permissions on back} | |
287 | \eject | |
288 | \sec Execution Control; | |
289 | continue \opt{\it count}\par | |
290 | c \opt{\it count}&continue running; if {\it count} specified, ignore | |
291 | this breakpoint next {\it count} times\cr | |
292 | \cr | |
293 | step \opt{\it count}\par | |
294 | s \opt{\it count}&execute until another line reached; repeat {\it count} times if | |
295 | specified\cr | |
296 | stepi \opt{\it count}\par | |
297 | si \opt{\it count}&step by machine instructions rather than source | |
298 | lines\cr | |
299 | \cr | |
300 | next \opt{\it count}\par | |
301 | n \opt{\it count}&execute next line, including any function calls\cr | |
302 | nexti \opt{\it count}\par | |
303 | ni \opt{\it count}&next machine instruction rather than source | |
304 | line\cr | |
305 | \cr | |
306 | until \opt{\it location}&run until next instruction (or {\it | |
307 | location})\cr | |
308 | finish&run until selected stack frame returns\cr | |
309 | return \opt{\it expr}&pop selected stack frame without executing | |
310 | \opt{setting return value}\cr | |
311 | signal {\it num}&resume execution with signal {\it s} (none if {\tt 0})\cr | |
312 | jump {\it line}\par | |
313 | jump *{\it address}&resume execution at specified {\it line} number or | |
314 | {\it address}\cr | |
315 | set var={\it expr}&evaluate {\it expr} without displaying it; use for | |
316 | altering program variables\cr | |
317 | \endsec | |
318 | ||
319 | \sec Display; | |
320 | print \opt{\tt/{\it f}\/} \opt{\it expr}\par | |
321 | p \opt{\tt/{\it f}\/} \opt{\it expr}&show value of {\it expr} \opt{or | |
322 | last value \tt \$} according to format {\it f}:\cr | |
323 | \qquad x&hexadecimal\cr | |
324 | \qquad d&signed decimal\cr | |
325 | \qquad u&unsigned decimal\cr | |
326 | \qquad o&octal\cr | |
327 | \qquad t&binary\cr | |
328 | \qquad a&address, absolute and relative\cr | |
329 | \qquad c&character\cr | |
330 | \qquad f&floating point\cr | |
331 | call \opt{\tt /{\it f}\/} {\it expr}&like {\tt print} but does not display | |
332 | {\tt void}\cr | |
333 | x \opt{\tt/{\it Nuf}\/} {\it expr}&examine memory at address {\it expr}; | |
334 | optional format spec follows slash\cr | |
335 | \quad {\it N}&count of how many units to display\cr | |
336 | \quad {\it u}&unit size; one of\cr | |
337 | &{\tt\qquad b}\ individual bytes\cr | |
338 | &{\tt\qquad h}\ halfwords (two bytes)\cr | |
339 | &{\tt\qquad w}\ words (four bytes)\cr | |
340 | &{\tt\qquad g}\ giant words (eight bytes)\cr | |
341 | \quad {\it f}&printing format. Any {\tt print} format, or\cr | |
342 | &{\tt\qquad s}\ null-terminated string\cr | |
343 | &{\tt\qquad i}\ machine instructions\cr | |
344 | disassem \opt{\it addr}&display memory as machine instructions\cr | |
345 | \endsec | |
346 | ||
347 | \sec Automatic Display; | |
348 | display \opt{\tt/\it f\/} {\it expr}&show value of {\it expr} each time | |
349 | program stops \opt{according to format {\it f}\/}\cr | |
350 | display&display all enabled expressions on list\cr | |
351 | undisplay {\it n}&remove number(s) {\it n} from list of | |
352 | automatically displayed expressions\cr | |
353 | disable disp {\it n}&disable display for expression(s) number {\it | |
354 | n}\cr | |
355 | enable disp {\it n}&enable display for expression(s) number {\it | |
356 | n}\cr | |
357 | info display&numbered list of display expressions\cr | |
358 | \endsec | |
359 | ||
360 | \vfill\eject | |
361 | ||
362 | \sec Expressions; | |
363 | {\it expr}&an expression in C, C++, or Modula-2 (including function calls), or:\cr | |
364 | {\it addr\/}@{\it len}&an array of {\it len} elements beginning at {\it | |
365 | addr}\cr | |
366 | {\it file}::{\it nm}&a variable or function {\it nm} defined in {\it | |
367 | file}\cr | |
368 | $\tt\{${\it type}$\tt\}${\it addr}&read memory at {\it addr} as specified | |
369 | {\it type}\cr | |
370 | \$&most recent displayed value\cr | |
371 | \${\it n}&{\it n}th displayed value\cr | |
372 | \$\$&displayed value previous to \$\cr | |
373 | \$\${\it n}&{\it n}th displayed value back from \$\cr | |
374 | \$\_&last address examined with {\tt x}\cr | |
375 | \$\_\_&value at address \$\_\cr | |
376 | \${\it var}&convenience variable; assign any value\cr | |
377 | \cr | |
378 | show values \opt{{\it n}}&show last 10 values \opt{or surrounding | |
379 | \${\it n}}\cr | |
380 | show convenience&display all convenience variables\cr | |
381 | \endsec | |
382 | ||
383 | \sec Symbol Table; | |
384 | info address {\it s}&show where symbol {\it s} is stored\cr | |
385 | info func \opt{\it regex}&show names, types of defined functions | |
386 | (all, or matching {\it regex})\cr | |
387 | info var \opt{\it regex}&show names, types of global variables (all, | |
388 | or matching {\it regex})\cr | |
389 | whatis \opt{\it expr}\par | |
390 | ptype \opt{\it expr}&show data type of {\it expr} \opt{or \tt \$} | |
391 | without evaluating; {\tt ptype} gives more detail\cr | |
392 | ptype {\it type}&describe type, struct, union, or enum\cr | |
393 | \endsec | |
394 | ||
395 | \sec GDB Scripts; | |
396 | source {\it script}&read, execute GDB commands from file {\it | |
397 | script}\cr | |
398 | \cr | |
399 | define {\it cmd}\par | |
400 | \qquad {\it command-list}&create new GDB command {\it cmd}; | |
401 | execute script defined by {\it command-list}\cr | |
402 | end&end of {\it command-list}\cr | |
403 | document {\it cmd}\par | |
404 | \qquad {\it help-text}&create online documentation | |
405 | for new GDB command {\it cmd}\cr | |
406 | end&end of {\it help-text}\cr | |
407 | \endsec | |
408 | ||
409 | \sec Signals; | |
410 | handle {\it signal} {\it act}&specify GDB actions for {\it signal}:\cr | |
411 | \quad print&announce signal\cr | |
412 | \quad noprint&be silent for signal\cr | |
413 | \quad stop&halt execution on signal\cr | |
414 | \quad nostop&do not halt execution\cr | |
415 | \quad pass&allow your program to handle signal\cr | |
416 | \quad nopass&do not allow your program to see signal\cr | |
417 | info signals&show table of signals, GDB action for each\cr | |
418 | \endsec | |
419 | ||
420 | \sec Debugging Targets; | |
421 | target {\it type} {\it param}&connect to target machine, process, or file\cr | |
422 | help target&display available targets\cr | |
423 | attach {\it param}&connect to another process\cr | |
424 | detach&release target from GDB control\cr | |
425 | \endsec | |
426 | ||
427 | \vfill\eject | |
428 | \sec Controlling GDB; | |
429 | set {\it param} {\it value}&set one of GDB's internal parameters\cr | |
430 | show {\it param}&display current setting of parameter\cr | |
431 | \xtra{\rm Parameters understood by {\tt set} and {\tt show}:} | |
432 | \quad complaints {\it limit}&number of messages on unusual symbols\cr | |
433 | \quad confirm {\it on/off}&enable or disable cautionary queries\cr | |
434 | \quad editing {\it on/off}&control {\tt readline} command-line editing\cr | |
435 | \quad height {\it lpp}&number of lines before pause in display\cr | |
436 | \quad language {\it lang}&Language for GDB expressions ({\tt auto}, {\tt c} or | |
437 | {\tt modula-2})\cr | |
438 | \quad listsize {\it n}&number of lines shown by {\tt list}\cr | |
439 | \quad prompt {\it str}&use {\it str} as GDB prompt\cr | |
440 | \quad radix {\it base}&octal, decimal, or hex number representation\cr | |
441 | \quad verbose {\it on/off}&control messages when loading | |
442 | symbols\cr | |
443 | \quad width {\it cpl}&number of characters before line folded\cr | |
444 | \quad write {\it on/off}&Allow or forbid patching binary, core files | |
445 | (when reopened with {\tt exec} or {\tt core}) | |
446 | \cr | |
447 | \quad history $\ldots$\par | |
448 | \quad h $\ldots$&groups with the following options:\cr | |
449 | \quad h exp {\it off/on}&disable/enable {\tt readline} history expansion\cr | |
450 | \quad h file {\it filename}&file for recording GDB command history\cr | |
451 | \quad h size {\it size}&number of commands kept in history list\cr | |
452 | \quad h save {\it off/on}&control use of external file for | |
453 | command history\cr | |
454 | \cr | |
455 | \quad print $\ldots$\par | |
456 | \quad p $\ldots$&groups with the following options:\cr | |
457 | \quad p address {\it on/off}&print memory addresses in stacks, | |
458 | values\cr | |
459 | \quad p array {\it off/on}&compact or attractive format for | |
460 | arrays\cr | |
461 | \quad p demangl {\it on/off}&source (demangled) or internal form for C++ | |
462 | symbols\cr | |
463 | \quad p asm-dem {\it on/off}&demangle C++ symbols in | |
464 | machine-instruction output\cr | |
465 | \quad p elements {\it limit}&number of array elements to display\cr | |
466 | \quad p object {\it on/off}&print C++ derived types for objects\cr | |
467 | \quad p pretty {\it off/on}&struct display: compact or indented\cr | |
468 | \quad p union {\it on/off}&display of union members\cr | |
469 | \quad p vtbl {\it off/on}&display of C++ virtual function | |
470 | tables\cr | |
471 | \cr | |
472 | show commands&show last 10 commands\cr | |
473 | show commands {\it n}&show 10 commands around number {\it n}\cr | |
474 | show commands +&show next 10 commands\cr | |
475 | \endsec | |
476 | ||
477 | \sec Working Files; | |
478 | file \opt{\it file}&use {\it file} for both symbols and executable; | |
479 | with no arg, discard both\cr | |
480 | core \opt{\it file}&read {\it file} as coredump; or discard\cr | |
481 | exec \opt{\it file}&use {\it file} as executable only; or discard\cr | |
482 | symbol \opt{\it file}&use symbol table from {\it file}; or discard\cr | |
483 | load {\it file}&dynamically link {\it file\/} and add its symbols\cr | |
484 | add-sym {\it file} {\it addr}&read additional symbols from {\it file}, | |
485 | dynamically loaded at {\it addr}\cr | |
486 | info files&display working files and targets in use\cr | |
487 | path {\it dirs}&add {\it dirs} to front of path searched for | |
488 | executable and symbol files\cr | |
489 | show path&display executable and symbol file path\cr | |
490 | info share&list names of shared libraries currently loaded\cr | |
491 | \endsec | |
492 | ||
493 | \vfill\eject | |
494 | \sec Source Files; | |
495 | dir {\it names}&add directory {\it names} to front of source path\cr | |
496 | dir&clear source path\cr | |
497 | show dir&show current source path\cr | |
498 | \cr | |
499 | list&show next ten lines of source\cr | |
500 | list -&show previous ten lines\cr | |
501 | list {\it lines}&display source centered around {\it lines}, | |
502 | specified as one of:\cr | |
503 | \quad{\opt{\it file\tt:}\it num}&line number \opt{in named file}\cr | |
504 | \quad{\opt{\it file\tt:}\it function}&beginning of function \opt{in | |
505 | named file}\cr | |
506 | \quad{\tt +\it off}&{\it off} lines after last printed\cr | |
507 | \quad{\tt -\it off}&{\it off} lines previous to last printed\cr | |
508 | \quad{\tt*\it address}&line containing {\it address}\cr | |
509 | list {\it f},{\it l}&from line {\it f} to line {\it l}\cr | |
510 | info line {\it num}&show starting, ending addresses of compiled code for | |
511 | source line {\it num}\cr | |
512 | info source&show name of current source file\cr | |
513 | info sources&list all source files in use\cr | |
514 | forw {\it regex}&search following source lines for {\it regex}\cr | |
515 | rev {\it regex}&search preceding source lines for {\it regex}\cr | |
516 | \endsec | |
517 | ||
518 | \sec GDB under GNU Emacs; | |
519 | M-x gdb&run GDB under Emacs\cr | |
520 | \ctl{h} m&describe GDB mode\cr | |
521 | M-s&step one line ({\tt step})\cr | |
522 | M-n&next line ({\tt next})\cr | |
523 | M-i&step one instruction ({\tt stepi})\cr | |
524 | \ctl{c} \ctl{f}&finish current stack frame ({\tt finish})\cr | |
525 | M-c&continue ({\tt cont})\cr | |
526 | M-u&up {\it arg} frames ({\tt up})\cr | |
527 | M-d&down {\it arg} frames ({\tt down})\cr | |
528 | \ctl{x} \&© number from point, insert at end\cr | |
529 | \ctl{x} SPC&(in source file) set break at point\cr | |
530 | \endsec | |
531 | ||
532 | \sec GDB License; | |
533 | show copying&Display GNU General Public License\cr | |
534 | show warranty&There is NO WARRANTY for GDB. Display full no-warranty | |
535 | statement.\cr | |
536 | \endsec | |
537 | ||
538 | ||
539 | \vfill | |
540 | {\smrm\parskip=6pt | |
541 | \centerline{Copyright \copyright 1991, 1992 Free Software Foundation, Inc.} | |
542 | \centerline{Roland Pesch (pesch@cygnus.com), January 1992---\manvers} | |
543 | \centerline{The author assumes no responsibility for any errors on this card.} | |
544 | ||
545 | This card may be freely distributed under the terms of the GNU | |
546 | General Public License. | |
547 | ||
548 | \centerline{Please contribute to development of this card by | |
549 | annotating it.} | |
550 | ||
551 | GDB itself is free software; you are welcome to distribute copies of | |
552 | it under the terms of the GNU General Public License. There is | |
553 | absolutely no warranty for GDB. | |
554 | } | |
555 | \end |