Commit | Line | Data |
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bd5635a1 | 1 | /* General utility routines for GDB, the GNU debugger. |
0d172a2e | 2 | Copyright 1986, 1989, 1990, 1991, 1992, 1995 Free Software Foundation, Inc. |
bd5635a1 RP |
3 | |
4 | This file is part of GDB. | |
5 | ||
351b221d | 6 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 7 | it under the terms of the GNU General Public License as published by |
351b221d JG |
8 | the Free Software Foundation; either version 2 of the License, or |
9 | (at your option) any later version. | |
bd5635a1 | 10 | |
351b221d | 11 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
351b221d JG |
17 | along with this program; if not, write to the Free Software |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
bd5635a1 | 19 | |
d747e0af | 20 | #include "defs.h" |
0d172a2e | 21 | #if !defined(__GO32__) && !defined(WIN32) |
bd5635a1 RP |
22 | #include <sys/ioctl.h> |
23 | #include <sys/param.h> | |
24 | #include <pwd.h> | |
51b57ded | 25 | #endif |
85c613aa C |
26 | #ifdef __STDC__ |
27 | #include <stdarg.h> | |
28 | #else | |
2bc2e684 | 29 | #include <varargs.h> |
85c613aa | 30 | #endif |
2bc2e684 FF |
31 | #include <ctype.h> |
32 | #include <string.h> | |
33 | ||
bd5635a1 RP |
34 | #include "signals.h" |
35 | #include "gdbcmd.h" | |
159dd2aa | 36 | #include "serial.h" |
bd5635a1 RP |
37 | #include "bfd.h" |
38 | #include "target.h" | |
bcf2e6ab | 39 | #include "demangle.h" |
bd5d07d9 FF |
40 | #include "expression.h" |
41 | #include "language.h" | |
1c95d7ab | 42 | #include "annotate.h" |
bd5635a1 | 43 | |
d8742f46 JK |
44 | #include "readline.h" |
45 | ||
46 | /* readline defines this. */ | |
47 | #undef savestring | |
48 | ||
7919c3ed JG |
49 | /* Prototypes for local functions */ |
50 | ||
65ce5df4 JG |
51 | #if defined (NO_MMALLOC) || defined (NO_MMALLOC_CHECK) |
52 | #else | |
3624c875 | 53 | |
7919c3ed JG |
54 | static void |
55 | malloc_botch PARAMS ((void)); | |
3624c875 | 56 | |
65ce5df4 | 57 | #endif /* NO_MMALLOC, etc */ |
7919c3ed JG |
58 | |
59 | static void | |
85c613aa | 60 | fatal_dump_core PARAMS((char *, ...)); |
7919c3ed JG |
61 | |
62 | static void | |
63 | prompt_for_continue PARAMS ((void)); | |
64 | ||
65 | static void | |
66 | set_width_command PARAMS ((char *, int, struct cmd_list_element *)); | |
67 | ||
bd5635a1 RP |
68 | /* If this definition isn't overridden by the header files, assume |
69 | that isatty and fileno exist on this system. */ | |
70 | #ifndef ISATTY | |
71 | #define ISATTY(FP) (isatty (fileno (FP))) | |
72 | #endif | |
73 | ||
bd5635a1 RP |
74 | /* Chain of cleanup actions established with make_cleanup, |
75 | to be executed if an error happens. */ | |
76 | ||
77 | static struct cleanup *cleanup_chain; | |
78 | ||
16d2cc80 SS |
79 | /* Nonzero if we have job control. */ |
80 | ||
81 | int job_control; | |
82 | ||
bd5635a1 RP |
83 | /* Nonzero means a quit has been requested. */ |
84 | ||
85 | int quit_flag; | |
86 | ||
159dd2aa JK |
87 | /* Nonzero means quit immediately if Control-C is typed now, rather |
88 | than waiting until QUIT is executed. Be careful in setting this; | |
89 | code which executes with immediate_quit set has to be very careful | |
90 | about being able to deal with being interrupted at any time. It is | |
91 | almost always better to use QUIT; the only exception I can think of | |
92 | is being able to quit out of a system call (using EINTR loses if | |
93 | the SIGINT happens between the previous QUIT and the system call). | |
94 | To immediately quit in the case in which a SIGINT happens between | |
95 | the previous QUIT and setting immediate_quit (desirable anytime we | |
96 | expect to block), call QUIT after setting immediate_quit. */ | |
bd5635a1 RP |
97 | |
98 | int immediate_quit; | |
99 | ||
100 | /* Nonzero means that encoded C++ names should be printed out in their | |
101 | C++ form rather than raw. */ | |
102 | ||
103 | int demangle = 1; | |
104 | ||
105 | /* Nonzero means that encoded C++ names should be printed out in their | |
106 | C++ form even in assembler language displays. If this is set, but | |
107 | DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */ | |
108 | ||
109 | int asm_demangle = 0; | |
110 | ||
111 | /* Nonzero means that strings with character values >0x7F should be printed | |
112 | as octal escapes. Zero means just print the value (e.g. it's an | |
113 | international character, and the terminal or window can cope.) */ | |
114 | ||
115 | int sevenbit_strings = 0; | |
81066208 JG |
116 | |
117 | /* String to be printed before error messages, if any. */ | |
118 | ||
119 | char *error_pre_print; | |
49073be0 SS |
120 | |
121 | /* String to be printed before quit messages, if any. */ | |
122 | ||
123 | char *quit_pre_print; | |
124 | ||
125 | /* String to be printed before warning messages, if any. */ | |
126 | ||
3624c875 | 127 | char *warning_pre_print = "\nwarning: "; |
bd5635a1 RP |
128 | \f |
129 | /* Add a new cleanup to the cleanup_chain, | |
130 | and return the previous chain pointer | |
131 | to be passed later to do_cleanups or discard_cleanups. | |
132 | Args are FUNCTION to clean up with, and ARG to pass to it. */ | |
133 | ||
134 | struct cleanup * | |
135 | make_cleanup (function, arg) | |
7919c3ed JG |
136 | void (*function) PARAMS ((PTR)); |
137 | PTR arg; | |
bd5635a1 RP |
138 | { |
139 | register struct cleanup *new | |
140 | = (struct cleanup *) xmalloc (sizeof (struct cleanup)); | |
141 | register struct cleanup *old_chain = cleanup_chain; | |
142 | ||
143 | new->next = cleanup_chain; | |
144 | new->function = function; | |
145 | new->arg = arg; | |
146 | cleanup_chain = new; | |
147 | ||
148 | return old_chain; | |
149 | } | |
150 | ||
151 | /* Discard cleanups and do the actions they describe | |
152 | until we get back to the point OLD_CHAIN in the cleanup_chain. */ | |
153 | ||
154 | void | |
155 | do_cleanups (old_chain) | |
156 | register struct cleanup *old_chain; | |
157 | { | |
158 | register struct cleanup *ptr; | |
159 | while ((ptr = cleanup_chain) != old_chain) | |
160 | { | |
5e5215eb | 161 | cleanup_chain = ptr->next; /* Do this first incase recursion */ |
bd5635a1 | 162 | (*ptr->function) (ptr->arg); |
bd5635a1 RP |
163 | free (ptr); |
164 | } | |
165 | } | |
166 | ||
167 | /* Discard cleanups, not doing the actions they describe, | |
168 | until we get back to the point OLD_CHAIN in the cleanup_chain. */ | |
169 | ||
170 | void | |
171 | discard_cleanups (old_chain) | |
172 | register struct cleanup *old_chain; | |
173 | { | |
174 | register struct cleanup *ptr; | |
175 | while ((ptr = cleanup_chain) != old_chain) | |
176 | { | |
177 | cleanup_chain = ptr->next; | |
be772100 | 178 | free ((PTR)ptr); |
bd5635a1 RP |
179 | } |
180 | } | |
181 | ||
182 | /* Set the cleanup_chain to 0, and return the old cleanup chain. */ | |
183 | struct cleanup * | |
184 | save_cleanups () | |
185 | { | |
186 | struct cleanup *old_chain = cleanup_chain; | |
187 | ||
188 | cleanup_chain = 0; | |
189 | return old_chain; | |
190 | } | |
191 | ||
192 | /* Restore the cleanup chain from a previously saved chain. */ | |
193 | void | |
194 | restore_cleanups (chain) | |
195 | struct cleanup *chain; | |
196 | { | |
197 | cleanup_chain = chain; | |
198 | } | |
199 | ||
200 | /* This function is useful for cleanups. | |
201 | Do | |
202 | ||
203 | foo = xmalloc (...); | |
204 | old_chain = make_cleanup (free_current_contents, &foo); | |
205 | ||
206 | to arrange to free the object thus allocated. */ | |
207 | ||
208 | void | |
209 | free_current_contents (location) | |
210 | char **location; | |
211 | { | |
212 | free (*location); | |
213 | } | |
088c3a0b JG |
214 | |
215 | /* Provide a known function that does nothing, to use as a base for | |
216 | for a possibly long chain of cleanups. This is useful where we | |
217 | use the cleanup chain for handling normal cleanups as well as dealing | |
218 | with cleanups that need to be done as a result of a call to error(). | |
219 | In such cases, we may not be certain where the first cleanup is, unless | |
220 | we have a do-nothing one to always use as the base. */ | |
221 | ||
222 | /* ARGSUSED */ | |
223 | void | |
224 | null_cleanup (arg) | |
225 | char **arg; | |
226 | { | |
227 | } | |
228 | ||
bd5635a1 | 229 | \f |
8989d4fc JK |
230 | /* Print a warning message. Way to use this is to call warning_begin, |
231 | output the warning message (use unfiltered output to gdb_stderr), | |
232 | ending in a newline. There is not currently a warning_end that you | |
233 | call afterwards, but such a thing might be added if it is useful | |
234 | for a GUI to separate warning messages from other output. | |
235 | ||
236 | FIXME: Why do warnings use unfiltered output and errors filtered? | |
237 | Is this anything other than a historical accident? */ | |
2bc2e684 FF |
238 | |
239 | void | |
8989d4fc | 240 | warning_begin () |
2bc2e684 FF |
241 | { |
242 | target_terminal_ours (); | |
243 | wrap_here(""); /* Force out any buffered output */ | |
199b2450 | 244 | gdb_flush (gdb_stdout); |
8989d4fc JK |
245 | if (warning_pre_print) |
246 | fprintf_unfiltered (gdb_stderr, warning_pre_print); | |
2bc2e684 FF |
247 | } |
248 | ||
249 | /* Print a warning message. | |
250 | The first argument STRING is the warning message, used as a fprintf string, | |
251 | and the remaining args are passed as arguments to it. | |
252 | The primary difference between warnings and errors is that a warning | |
8989d4fc | 253 | does not force the return to command level. */ |
2bc2e684 FF |
254 | |
255 | /* VARARGS */ | |
256 | void | |
85c613aa C |
257 | #ifdef __STDC__ |
258 | warning (char *string, ...) | |
259 | #else | |
2bc2e684 FF |
260 | warning (va_alist) |
261 | va_dcl | |
85c613aa | 262 | #endif |
2bc2e684 FF |
263 | { |
264 | va_list args; | |
85c613aa C |
265 | #ifdef __STDC__ |
266 | va_start (args, string); | |
267 | #else | |
2bc2e684 FF |
268 | char *string; |
269 | ||
270 | va_start (args); | |
2bc2e684 | 271 | string = va_arg (args, char *); |
85c613aa C |
272 | #endif |
273 | warning_begin (); | |
199b2450 TL |
274 | vfprintf_unfiltered (gdb_stderr, string, args); |
275 | fprintf_unfiltered (gdb_stderr, "\n"); | |
2bc2e684 FF |
276 | va_end (args); |
277 | } | |
278 | ||
a0cf4681 | 279 | /* Start the printing of an error message. Way to use this is to call |
8989d4fc JK |
280 | this, output the error message (use filtered output to gdb_stderr |
281 | (FIXME: Some callers, like memory_error, use gdb_stdout)), ending | |
282 | in a newline, and then call return_to_top_level (RETURN_ERROR). | |
283 | error() provides a convenient way to do this for the special case | |
284 | that the error message can be formatted with a single printf call, | |
285 | but this is more general. */ | |
a0cf4681 JK |
286 | void |
287 | error_begin () | |
288 | { | |
289 | target_terminal_ours (); | |
290 | wrap_here (""); /* Force out any buffered output */ | |
291 | gdb_flush (gdb_stdout); | |
292 | ||
1c95d7ab | 293 | annotate_error_begin (); |
a0cf4681 JK |
294 | |
295 | if (error_pre_print) | |
296 | fprintf_filtered (gdb_stderr, error_pre_print); | |
297 | } | |
298 | ||
bd5635a1 RP |
299 | /* Print an error message and return to command level. |
300 | The first argument STRING is the error message, used as a fprintf string, | |
301 | and the remaining args are passed as arguments to it. */ | |
302 | ||
303 | /* VARARGS */ | |
7919c3ed | 304 | NORETURN void |
85c613aa C |
305 | #ifdef __STDC__ |
306 | error (char *string, ...) | |
307 | #else | |
bd5635a1 RP |
308 | error (va_alist) |
309 | va_dcl | |
85c613aa | 310 | #endif |
bd5635a1 RP |
311 | { |
312 | va_list args; | |
85c613aa C |
313 | #ifdef __STDC__ |
314 | va_start (args, string); | |
315 | #else | |
bd5635a1 RP |
316 | char *string; |
317 | ||
318 | va_start (args); | |
bd5635a1 | 319 | string = va_arg (args, char *); |
85c613aa C |
320 | #endif |
321 | error_begin (); | |
199b2450 TL |
322 | vfprintf_filtered (gdb_stderr, string, args); |
323 | fprintf_filtered (gdb_stderr, "\n"); | |
bd5635a1 | 324 | va_end (args); |
159dd2aa | 325 | return_to_top_level (RETURN_ERROR); |
bd5635a1 RP |
326 | } |
327 | ||
328 | /* Print an error message and exit reporting failure. | |
329 | This is for a error that we cannot continue from. | |
7919c3ed JG |
330 | The arguments are printed a la printf. |
331 | ||
332 | This function cannot be declared volatile (NORETURN) in an | |
333 | ANSI environment because exit() is not declared volatile. */ | |
bd5635a1 RP |
334 | |
335 | /* VARARGS */ | |
7919c3ed | 336 | NORETURN void |
85c613aa C |
337 | #ifdef __STDC__ |
338 | fatal (char *string, ...) | |
339 | #else | |
bd5635a1 RP |
340 | fatal (va_alist) |
341 | va_dcl | |
85c613aa | 342 | #endif |
bd5635a1 RP |
343 | { |
344 | va_list args; | |
85c613aa C |
345 | #ifdef __STDC__ |
346 | va_start (args, string); | |
347 | #else | |
bd5635a1 RP |
348 | char *string; |
349 | ||
350 | va_start (args); | |
351 | string = va_arg (args, char *); | |
85c613aa | 352 | #endif |
199b2450 TL |
353 | fprintf_unfiltered (gdb_stderr, "\ngdb: "); |
354 | vfprintf_unfiltered (gdb_stderr, string, args); | |
355 | fprintf_unfiltered (gdb_stderr, "\n"); | |
bd5635a1 RP |
356 | va_end (args); |
357 | exit (1); | |
358 | } | |
359 | ||
360 | /* Print an error message and exit, dumping core. | |
361 | The arguments are printed a la printf (). */ | |
7919c3ed | 362 | |
bd5635a1 | 363 | /* VARARGS */ |
7919c3ed | 364 | static void |
85c613aa C |
365 | #ifdef __STDC__ |
366 | fatal_dump_core (char *string, ...) | |
367 | #else | |
bd5635a1 RP |
368 | fatal_dump_core (va_alist) |
369 | va_dcl | |
85c613aa | 370 | #endif |
bd5635a1 RP |
371 | { |
372 | va_list args; | |
85c613aa C |
373 | #ifdef __STDC__ |
374 | va_start (args, string); | |
375 | #else | |
bd5635a1 RP |
376 | char *string; |
377 | ||
378 | va_start (args); | |
379 | string = va_arg (args, char *); | |
85c613aa | 380 | #endif |
bd5635a1 RP |
381 | /* "internal error" is always correct, since GDB should never dump |
382 | core, no matter what the input. */ | |
199b2450 TL |
383 | fprintf_unfiltered (gdb_stderr, "\ngdb internal error: "); |
384 | vfprintf_unfiltered (gdb_stderr, string, args); | |
385 | fprintf_unfiltered (gdb_stderr, "\n"); | |
bd5635a1 RP |
386 | va_end (args); |
387 | ||
388 | signal (SIGQUIT, SIG_DFL); | |
389 | kill (getpid (), SIGQUIT); | |
390 | /* We should never get here, but just in case... */ | |
391 | exit (1); | |
392 | } | |
7919c3ed | 393 | |
4ace50a5 FF |
394 | /* The strerror() function can return NULL for errno values that are |
395 | out of range. Provide a "safe" version that always returns a | |
396 | printable string. */ | |
397 | ||
398 | char * | |
399 | safe_strerror (errnum) | |
400 | int errnum; | |
401 | { | |
402 | char *msg; | |
403 | static char buf[32]; | |
404 | ||
405 | if ((msg = strerror (errnum)) == NULL) | |
406 | { | |
407 | sprintf (buf, "(undocumented errno %d)", errnum); | |
408 | msg = buf; | |
409 | } | |
410 | return (msg); | |
411 | } | |
412 | ||
413 | /* The strsignal() function can return NULL for signal values that are | |
414 | out of range. Provide a "safe" version that always returns a | |
415 | printable string. */ | |
416 | ||
417 | char * | |
418 | safe_strsignal (signo) | |
419 | int signo; | |
420 | { | |
421 | char *msg; | |
422 | static char buf[32]; | |
423 | ||
424 | if ((msg = strsignal (signo)) == NULL) | |
425 | { | |
426 | sprintf (buf, "(undocumented signal %d)", signo); | |
427 | msg = buf; | |
428 | } | |
429 | return (msg); | |
430 | } | |
431 | ||
432 | ||
bd5635a1 RP |
433 | /* Print the system error message for errno, and also mention STRING |
434 | as the file name for which the error was encountered. | |
435 | Then return to command level. */ | |
436 | ||
437 | void | |
438 | perror_with_name (string) | |
439 | char *string; | |
440 | { | |
bd5635a1 RP |
441 | char *err; |
442 | char *combined; | |
443 | ||
4ace50a5 | 444 | err = safe_strerror (errno); |
bd5635a1 RP |
445 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); |
446 | strcpy (combined, string); | |
447 | strcat (combined, ": "); | |
448 | strcat (combined, err); | |
449 | ||
450 | /* I understand setting these is a matter of taste. Still, some people | |
451 | may clear errno but not know about bfd_error. Doing this here is not | |
452 | unreasonable. */ | |
8eec3310 | 453 | bfd_set_error (bfd_error_no_error); |
bd5635a1 RP |
454 | errno = 0; |
455 | ||
456 | error ("%s.", combined); | |
457 | } | |
458 | ||
459 | /* Print the system error message for ERRCODE, and also mention STRING | |
460 | as the file name for which the error was encountered. */ | |
461 | ||
462 | void | |
463 | print_sys_errmsg (string, errcode) | |
464 | char *string; | |
465 | int errcode; | |
466 | { | |
bd5635a1 RP |
467 | char *err; |
468 | char *combined; | |
469 | ||
4ace50a5 | 470 | err = safe_strerror (errcode); |
bd5635a1 RP |
471 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); |
472 | strcpy (combined, string); | |
473 | strcat (combined, ": "); | |
474 | strcat (combined, err); | |
475 | ||
44a09a68 JK |
476 | /* We want anything which was printed on stdout to come out first, before |
477 | this message. */ | |
478 | gdb_flush (gdb_stdout); | |
199b2450 | 479 | fprintf_unfiltered (gdb_stderr, "%s.\n", combined); |
bd5635a1 RP |
480 | } |
481 | ||
482 | /* Control C eventually causes this to be called, at a convenient time. */ | |
483 | ||
484 | void | |
485 | quit () | |
486 | { | |
199b2450 | 487 | serial_t gdb_stdout_serial = serial_fdopen (1); |
159dd2aa | 488 | |
bd5635a1 | 489 | target_terminal_ours (); |
159dd2aa | 490 | |
44a09a68 JK |
491 | /* We want all output to appear now, before we print "Quit". We |
492 | have 3 levels of buffering we have to flush (it's possible that | |
493 | some of these should be changed to flush the lower-level ones | |
494 | too): */ | |
495 | ||
496 | /* 1. The _filtered buffer. */ | |
497 | wrap_here ((char *)0); | |
498 | ||
499 | /* 2. The stdio buffer. */ | |
500 | gdb_flush (gdb_stdout); | |
501 | gdb_flush (gdb_stderr); | |
159dd2aa | 502 | |
44a09a68 JK |
503 | /* 3. The system-level buffer. */ |
504 | SERIAL_FLUSH_OUTPUT (gdb_stdout_serial); | |
199b2450 | 505 | SERIAL_UN_FDOPEN (gdb_stdout_serial); |
159dd2aa | 506 | |
1c95d7ab | 507 | annotate_error_begin (); |
a0cf4681 | 508 | |
159dd2aa | 509 | /* Don't use *_filtered; we don't want to prompt the user to continue. */ |
49073be0 SS |
510 | if (quit_pre_print) |
511 | fprintf_unfiltered (gdb_stderr, quit_pre_print); | |
159dd2aa JK |
512 | |
513 | if (job_control | |
514 | /* If there is no terminal switching for this target, then we can't | |
515 | possibly get screwed by the lack of job control. */ | |
cad1498f | 516 | || current_target.to_terminal_ours == NULL) |
199b2450 | 517 | fprintf_unfiltered (gdb_stderr, "Quit\n"); |
159dd2aa | 518 | else |
199b2450 | 519 | fprintf_unfiltered (gdb_stderr, |
159dd2aa JK |
520 | "Quit (expect signal SIGINT when the program is resumed)\n"); |
521 | return_to_top_level (RETURN_QUIT); | |
bd5635a1 RP |
522 | } |
523 | ||
bd5d07d9 | 524 | |
0d172a2e | 525 | #if defined(__GO32__)||defined(WIN32) |
bd5d07d9 FF |
526 | |
527 | /* In the absence of signals, poll keyboard for a quit. | |
528 | Called from #define QUIT pollquit() in xm-go32.h. */ | |
529 | ||
530 | void | |
531 | pollquit() | |
532 | { | |
533 | if (kbhit ()) | |
534 | { | |
535 | int k = getkey (); | |
44a09a68 | 536 | if (k == 1) { |
bd5d07d9 | 537 | quit_flag = 1; |
44a09a68 JK |
538 | quit(); |
539 | } | |
540 | else if (k == 2) { | |
bd5d07d9 | 541 | immediate_quit = 1; |
44a09a68 JK |
542 | quit (); |
543 | } | |
544 | else | |
545 | { | |
546 | /* We just ignore it */ | |
547 | fprintf_unfiltered (gdb_stderr, "CTRL-A to quit, CTRL-B to quit harder\n"); | |
548 | } | |
bd5d07d9 FF |
549 | } |
550 | } | |
551 | ||
bd5d07d9 | 552 | |
44a09a68 | 553 | #endif |
0d172a2e | 554 | #if defined(__GO32__)||defined(WIN32) |
44a09a68 JK |
555 | void notice_quit() |
556 | { | |
557 | if (kbhit ()) | |
558 | { | |
559 | int k = getkey (); | |
560 | if (k == 1) { | |
561 | quit_flag = 1; | |
562 | } | |
563 | else if (k == 2) | |
564 | { | |
565 | immediate_quit = 1; | |
566 | } | |
567 | else | |
568 | { | |
569 | fprintf_unfiltered (gdb_stderr, "CTRL-A to quit, CTRL-B to quit harder\n"); | |
570 | } | |
571 | } | |
572 | } | |
573 | #else | |
574 | void notice_quit() | |
575 | { | |
576 | /* Done by signals */ | |
577 | } | |
578 | #endif | |
bd5635a1 RP |
579 | /* Control C comes here */ |
580 | ||
581 | void | |
088c3a0b JG |
582 | request_quit (signo) |
583 | int signo; | |
bd5635a1 RP |
584 | { |
585 | quit_flag = 1; | |
586 | ||
44a09a68 JK |
587 | /* Restore the signal handler. Harmless with BSD-style signals, needed |
588 | for System V-style signals. So just always do it, rather than worrying | |
589 | about USG defines and stuff like that. */ | |
088c3a0b | 590 | signal (signo, request_quit); |
bd5635a1 | 591 | |
cad1498f SG |
592 | #ifdef REQUEST_QUIT |
593 | REQUEST_QUIT; | |
594 | #else | |
bd5635a1 RP |
595 | if (immediate_quit) |
596 | quit (); | |
cad1498f | 597 | #endif |
bd5635a1 | 598 | } |
3624c875 FF |
599 | |
600 | \f | |
601 | /* Memory management stuff (malloc friends). */ | |
602 | ||
603 | #if defined (NO_MMALLOC) | |
604 | ||
0d172a2e JK |
605 | /* Make a substitute size_t for non-ANSI compilers. */ |
606 | ||
607 | #ifdef _AIX | |
608 | #include <stddef.h> | |
609 | #else /* Not AIX */ | |
610 | #ifndef __STDC__ | |
611 | #ifndef size_t | |
612 | #define size_t unsigned int | |
613 | #endif | |
614 | #endif | |
615 | #endif /* Not AIX */ | |
616 | ||
3624c875 FF |
617 | PTR |
618 | mmalloc (md, size) | |
619 | PTR md; | |
0d172a2e | 620 | size_t size; |
3624c875 | 621 | { |
0d172a2e | 622 | return malloc (size); |
3624c875 FF |
623 | } |
624 | ||
625 | PTR | |
626 | mrealloc (md, ptr, size) | |
627 | PTR md; | |
628 | PTR ptr; | |
0d172a2e | 629 | size_t size; |
3624c875 | 630 | { |
4ace50a5 FF |
631 | if (ptr == 0) /* Guard against old realloc's */ |
632 | return malloc (size); | |
633 | else | |
634 | return realloc (ptr, size); | |
3624c875 FF |
635 | } |
636 | ||
637 | void | |
638 | mfree (md, ptr) | |
639 | PTR md; | |
640 | PTR ptr; | |
641 | { | |
642 | free (ptr); | |
643 | } | |
644 | ||
645 | #endif /* NO_MMALLOC */ | |
646 | ||
647 | #if defined (NO_MMALLOC) || defined (NO_MMALLOC_CHECK) | |
648 | ||
649 | void | |
650 | init_malloc (md) | |
651 | PTR md; | |
652 | { | |
653 | } | |
654 | ||
655 | #else /* have mmalloc and want corruption checking */ | |
656 | ||
657 | static void | |
658 | malloc_botch () | |
659 | { | |
660 | fatal_dump_core ("Memory corruption"); | |
661 | } | |
662 | ||
663 | /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified | |
664 | by MD, to detect memory corruption. Note that MD may be NULL to specify | |
665 | the default heap that grows via sbrk. | |
666 | ||
667 | Note that for freshly created regions, we must call mmcheck prior to any | |
668 | mallocs in the region. Otherwise, any region which was allocated prior to | |
669 | installing the checking hooks, which is later reallocated or freed, will | |
670 | fail the checks! The mmcheck function only allows initial hooks to be | |
671 | installed before the first mmalloc. However, anytime after we have called | |
672 | mmcheck the first time to install the checking hooks, we can call it again | |
673 | to update the function pointer to the memory corruption handler. | |
674 | ||
675 | Returns zero on failure, non-zero on success. */ | |
676 | ||
677 | void | |
678 | init_malloc (md) | |
679 | PTR md; | |
680 | { | |
681 | if (!mmcheck (md, malloc_botch)) | |
682 | { | |
683 | warning ("internal error: failed to install memory consistency checks"); | |
684 | } | |
685 | ||
4ed3a9ea | 686 | mmtrace (); |
3624c875 FF |
687 | } |
688 | ||
689 | #endif /* Have mmalloc and want corruption checking */ | |
690 | ||
691 | /* Called when a memory allocation fails, with the number of bytes of | |
692 | memory requested in SIZE. */ | |
693 | ||
694 | NORETURN void | |
695 | nomem (size) | |
696 | long size; | |
697 | { | |
698 | if (size > 0) | |
699 | { | |
700 | fatal ("virtual memory exhausted: can't allocate %ld bytes.", size); | |
701 | } | |
702 | else | |
703 | { | |
704 | fatal ("virtual memory exhausted."); | |
705 | } | |
706 | } | |
707 | ||
708 | /* Like mmalloc but get error if no storage available, and protect against | |
709 | the caller wanting to allocate zero bytes. Whether to return NULL for | |
710 | a zero byte request, or translate the request into a request for one | |
711 | byte of zero'd storage, is a religious issue. */ | |
712 | ||
713 | PTR | |
714 | xmmalloc (md, size) | |
715 | PTR md; | |
716 | long size; | |
717 | { | |
718 | register PTR val; | |
719 | ||
720 | if (size == 0) | |
721 | { | |
722 | val = NULL; | |
723 | } | |
724 | else if ((val = mmalloc (md, size)) == NULL) | |
725 | { | |
726 | nomem (size); | |
727 | } | |
728 | return (val); | |
729 | } | |
730 | ||
731 | /* Like mrealloc but get error if no storage available. */ | |
732 | ||
733 | PTR | |
734 | xmrealloc (md, ptr, size) | |
735 | PTR md; | |
736 | PTR ptr; | |
737 | long size; | |
738 | { | |
739 | register PTR val; | |
740 | ||
741 | if (ptr != NULL) | |
742 | { | |
743 | val = mrealloc (md, ptr, size); | |
744 | } | |
745 | else | |
746 | { | |
747 | val = mmalloc (md, size); | |
748 | } | |
749 | if (val == NULL) | |
750 | { | |
751 | nomem (size); | |
752 | } | |
753 | return (val); | |
754 | } | |
755 | ||
756 | /* Like malloc but get error if no storage available, and protect against | |
757 | the caller wanting to allocate zero bytes. */ | |
758 | ||
759 | PTR | |
760 | xmalloc (size) | |
761 | long size; | |
762 | { | |
199b2450 | 763 | return (xmmalloc ((PTR) NULL, size)); |
3624c875 FF |
764 | } |
765 | ||
766 | /* Like mrealloc but get error if no storage available. */ | |
767 | ||
768 | PTR | |
769 | xrealloc (ptr, size) | |
770 | PTR ptr; | |
771 | long size; | |
772 | { | |
199b2450 | 773 | return (xmrealloc ((PTR) NULL, ptr, size)); |
3624c875 FF |
774 | } |
775 | ||
bd5635a1 RP |
776 | \f |
777 | /* My replacement for the read system call. | |
778 | Used like `read' but keeps going if `read' returns too soon. */ | |
779 | ||
780 | int | |
781 | myread (desc, addr, len) | |
782 | int desc; | |
783 | char *addr; | |
784 | int len; | |
785 | { | |
786 | register int val; | |
787 | int orglen = len; | |
788 | ||
789 | while (len > 0) | |
790 | { | |
791 | val = read (desc, addr, len); | |
792 | if (val < 0) | |
793 | return val; | |
794 | if (val == 0) | |
795 | return orglen - len; | |
796 | len -= val; | |
797 | addr += val; | |
798 | } | |
799 | return orglen; | |
800 | } | |
801 | \f | |
802 | /* Make a copy of the string at PTR with SIZE characters | |
803 | (and add a null character at the end in the copy). | |
804 | Uses malloc to get the space. Returns the address of the copy. */ | |
805 | ||
806 | char * | |
807 | savestring (ptr, size) | |
088c3a0b | 808 | const char *ptr; |
bd5635a1 RP |
809 | int size; |
810 | { | |
811 | register char *p = (char *) xmalloc (size + 1); | |
4ed3a9ea | 812 | memcpy (p, ptr, size); |
bd5635a1 RP |
813 | p[size] = 0; |
814 | return p; | |
815 | } | |
816 | ||
3624c875 FF |
817 | char * |
818 | msavestring (md, ptr, size) | |
199b2450 | 819 | PTR md; |
3624c875 FF |
820 | const char *ptr; |
821 | int size; | |
822 | { | |
823 | register char *p = (char *) xmmalloc (md, size + 1); | |
4ed3a9ea | 824 | memcpy (p, ptr, size); |
3624c875 FF |
825 | p[size] = 0; |
826 | return p; | |
827 | } | |
828 | ||
8aa13b87 JK |
829 | /* The "const" is so it compiles under DGUX (which prototypes strsave |
830 | in <string.h>. FIXME: This should be named "xstrsave", shouldn't it? | |
831 | Doesn't real strsave return NULL if out of memory? */ | |
bd5635a1 RP |
832 | char * |
833 | strsave (ptr) | |
8aa13b87 | 834 | const char *ptr; |
bd5635a1 RP |
835 | { |
836 | return savestring (ptr, strlen (ptr)); | |
837 | } | |
838 | ||
3624c875 FF |
839 | char * |
840 | mstrsave (md, ptr) | |
199b2450 | 841 | PTR md; |
3624c875 FF |
842 | const char *ptr; |
843 | { | |
844 | return (msavestring (md, ptr, strlen (ptr))); | |
845 | } | |
846 | ||
bd5635a1 RP |
847 | void |
848 | print_spaces (n, file) | |
849 | register int n; | |
850 | register FILE *file; | |
851 | { | |
852 | while (n-- > 0) | |
853 | fputc (' ', file); | |
854 | } | |
855 | ||
8eec3310 SC |
856 | /* Print a host address. */ |
857 | ||
858 | void | |
859 | gdb_print_address (addr, stream) | |
860 | PTR addr; | |
861 | GDB_FILE *stream; | |
862 | { | |
863 | ||
864 | /* We could use the %p conversion specifier to fprintf if we had any | |
865 | way of knowing whether this host supports it. But the following | |
866 | should work on the Alpha and on 32 bit machines. */ | |
867 | ||
868 | fprintf_filtered (stream, "0x%lx", (unsigned long)addr); | |
869 | } | |
870 | ||
bd5635a1 RP |
871 | /* Ask user a y-or-n question and return 1 iff answer is yes. |
872 | Takes three args which are given to printf to print the question. | |
873 | The first, a control string, should end in "? ". | |
874 | It should not say how to answer, because we do that. */ | |
875 | ||
876 | /* VARARGS */ | |
877 | int | |
85c613aa C |
878 | #ifdef __STDC__ |
879 | query (char *ctlstr, ...) | |
880 | #else | |
bd5635a1 RP |
881 | query (va_alist) |
882 | va_dcl | |
85c613aa | 883 | #endif |
bd5635a1 RP |
884 | { |
885 | va_list args; | |
bd5635a1 RP |
886 | register int answer; |
887 | register int ans2; | |
d8742f46 | 888 | int retval; |
bd5635a1 | 889 | |
85c613aa C |
890 | #ifdef __STDC__ |
891 | va_start (args, ctlstr); | |
892 | #else | |
893 | char *ctlstr; | |
894 | va_start (args); | |
895 | ctlstr = va_arg (args, char *); | |
896 | #endif | |
897 | ||
0d172a2e JK |
898 | if (query_hook) |
899 | { | |
85c613aa | 900 | return query_hook (ctlstr, args); |
0d172a2e JK |
901 | } |
902 | ||
bd5635a1 RP |
903 | /* Automatically answer "yes" if input is not from a terminal. */ |
904 | if (!input_from_terminal_p ()) | |
905 | return 1; | |
cad1498f | 906 | #ifdef MPW |
49073be0 | 907 | /* FIXME Automatically answer "yes" if called from MacGDB. */ |
cad1498f SG |
908 | if (mac_app) |
909 | return 1; | |
910 | #endif /* MPW */ | |
bd5635a1 RP |
911 | |
912 | while (1) | |
913 | { | |
546014f7 | 914 | wrap_here (""); /* Flush any buffered output */ |
199b2450 | 915 | gdb_flush (gdb_stdout); |
d8742f46 JK |
916 | |
917 | if (annotation_level > 1) | |
918 | printf_filtered ("\n\032\032pre-query\n"); | |
919 | ||
199b2450 | 920 | vfprintf_filtered (gdb_stdout, ctlstr, args); |
bcf2e6ab | 921 | printf_filtered ("(y or n) "); |
d8742f46 JK |
922 | |
923 | if (annotation_level > 1) | |
924 | printf_filtered ("\n\032\032query\n"); | |
925 | ||
cad1498f SG |
926 | #ifdef MPW |
927 | /* If not in MacGDB, move to a new line so the entered line doesn't | |
928 | have a prompt on the front of it. */ | |
929 | if (!mac_app) | |
930 | fputs_unfiltered ("\n", gdb_stdout); | |
931 | #endif /* MPW */ | |
49073be0 | 932 | |
199b2450 | 933 | gdb_flush (gdb_stdout); |
b36e3a9b SG |
934 | answer = fgetc (stdin); |
935 | clearerr (stdin); /* in case of C-d */ | |
936 | if (answer == EOF) /* C-d */ | |
d8742f46 JK |
937 | { |
938 | retval = 1; | |
939 | break; | |
940 | } | |
b36e3a9b SG |
941 | if (answer != '\n') /* Eat rest of input line, to EOF or newline */ |
942 | do | |
943 | { | |
944 | ans2 = fgetc (stdin); | |
945 | clearerr (stdin); | |
946 | } | |
947 | while (ans2 != EOF && ans2 != '\n'); | |
bd5635a1 RP |
948 | if (answer >= 'a') |
949 | answer -= 040; | |
950 | if (answer == 'Y') | |
d8742f46 JK |
951 | { |
952 | retval = 1; | |
953 | break; | |
954 | } | |
bd5635a1 | 955 | if (answer == 'N') |
d8742f46 JK |
956 | { |
957 | retval = 0; | |
958 | break; | |
959 | } | |
bcf2e6ab | 960 | printf_filtered ("Please answer y or n.\n"); |
bd5635a1 | 961 | } |
d8742f46 JK |
962 | |
963 | if (annotation_level > 1) | |
964 | printf_filtered ("\n\032\032post-query\n"); | |
965 | return retval; | |
bd5635a1 | 966 | } |
7919c3ed | 967 | |
bd5635a1 RP |
968 | \f |
969 | /* Parse a C escape sequence. STRING_PTR points to a variable | |
970 | containing a pointer to the string to parse. That pointer | |
971 | should point to the character after the \. That pointer | |
972 | is updated past the characters we use. The value of the | |
973 | escape sequence is returned. | |
974 | ||
975 | A negative value means the sequence \ newline was seen, | |
976 | which is supposed to be equivalent to nothing at all. | |
977 | ||
978 | If \ is followed by a null character, we return a negative | |
979 | value and leave the string pointer pointing at the null character. | |
980 | ||
981 | If \ is followed by 000, we return 0 and leave the string pointer | |
982 | after the zeros. A value of 0 does not mean end of string. */ | |
983 | ||
984 | int | |
985 | parse_escape (string_ptr) | |
986 | char **string_ptr; | |
987 | { | |
988 | register int c = *(*string_ptr)++; | |
989 | switch (c) | |
990 | { | |
991 | case 'a': | |
2bc2e684 | 992 | return 007; /* Bell (alert) char */ |
bd5635a1 RP |
993 | case 'b': |
994 | return '\b'; | |
2bc2e684 | 995 | case 'e': /* Escape character */ |
bd5635a1 RP |
996 | return 033; |
997 | case 'f': | |
998 | return '\f'; | |
999 | case 'n': | |
1000 | return '\n'; | |
1001 | case 'r': | |
1002 | return '\r'; | |
1003 | case 't': | |
1004 | return '\t'; | |
1005 | case 'v': | |
1006 | return '\v'; | |
1007 | case '\n': | |
1008 | return -2; | |
1009 | case 0: | |
1010 | (*string_ptr)--; | |
1011 | return 0; | |
1012 | case '^': | |
1013 | c = *(*string_ptr)++; | |
1014 | if (c == '\\') | |
1015 | c = parse_escape (string_ptr); | |
1016 | if (c == '?') | |
1017 | return 0177; | |
1018 | return (c & 0200) | (c & 037); | |
1019 | ||
1020 | case '0': | |
1021 | case '1': | |
1022 | case '2': | |
1023 | case '3': | |
1024 | case '4': | |
1025 | case '5': | |
1026 | case '6': | |
1027 | case '7': | |
1028 | { | |
1029 | register int i = c - '0'; | |
1030 | register int count = 0; | |
1031 | while (++count < 3) | |
1032 | { | |
1033 | if ((c = *(*string_ptr)++) >= '0' && c <= '7') | |
1034 | { | |
1035 | i *= 8; | |
1036 | i += c - '0'; | |
1037 | } | |
1038 | else | |
1039 | { | |
1040 | (*string_ptr)--; | |
1041 | break; | |
1042 | } | |
1043 | } | |
1044 | return i; | |
1045 | } | |
1046 | default: | |
1047 | return c; | |
1048 | } | |
1049 | } | |
1050 | \f | |
51b80b00 FF |
1051 | /* Print the character C on STREAM as part of the contents of a literal |
1052 | string whose delimiter is QUOTER. Note that this routine should only | |
1053 | be call for printing things which are independent of the language | |
1054 | of the program being debugged. */ | |
bd5635a1 RP |
1055 | |
1056 | void | |
51b80b00 | 1057 | gdb_printchar (c, stream, quoter) |
088c3a0b | 1058 | register int c; |
bd5635a1 RP |
1059 | FILE *stream; |
1060 | int quoter; | |
1061 | { | |
bd5635a1 | 1062 | |
7e7e2d40 JG |
1063 | c &= 0xFF; /* Avoid sign bit follies */ |
1064 | ||
fcdb113e JG |
1065 | if ( c < 0x20 || /* Low control chars */ |
1066 | (c >= 0x7F && c < 0xA0) || /* DEL, High controls */ | |
1067 | (sevenbit_strings && c >= 0x80)) { /* high order bit set */ | |
bd5635a1 RP |
1068 | switch (c) |
1069 | { | |
1070 | case '\n': | |
1071 | fputs_filtered ("\\n", stream); | |
1072 | break; | |
1073 | case '\b': | |
1074 | fputs_filtered ("\\b", stream); | |
1075 | break; | |
1076 | case '\t': | |
1077 | fputs_filtered ("\\t", stream); | |
1078 | break; | |
1079 | case '\f': | |
1080 | fputs_filtered ("\\f", stream); | |
1081 | break; | |
1082 | case '\r': | |
1083 | fputs_filtered ("\\r", stream); | |
1084 | break; | |
1085 | case '\033': | |
1086 | fputs_filtered ("\\e", stream); | |
1087 | break; | |
1088 | case '\007': | |
1089 | fputs_filtered ("\\a", stream); | |
1090 | break; | |
1091 | default: | |
1092 | fprintf_filtered (stream, "\\%.3o", (unsigned int) c); | |
1093 | break; | |
1094 | } | |
2bc2e684 FF |
1095 | } else { |
1096 | if (c == '\\' || c == quoter) | |
1097 | fputs_filtered ("\\", stream); | |
1098 | fprintf_filtered (stream, "%c", c); | |
1099 | } | |
bd5635a1 RP |
1100 | } |
1101 | \f | |
1102 | /* Number of lines per page or UINT_MAX if paging is disabled. */ | |
1103 | static unsigned int lines_per_page; | |
1104 | /* Number of chars per line or UNIT_MAX is line folding is disabled. */ | |
1105 | static unsigned int chars_per_line; | |
1106 | /* Current count of lines printed on this page, chars on this line. */ | |
1107 | static unsigned int lines_printed, chars_printed; | |
1108 | ||
1109 | /* Buffer and start column of buffered text, for doing smarter word- | |
1110 | wrapping. When someone calls wrap_here(), we start buffering output | |
1111 | that comes through fputs_filtered(). If we see a newline, we just | |
1112 | spit it out and forget about the wrap_here(). If we see another | |
1113 | wrap_here(), we spit it out and remember the newer one. If we see | |
1114 | the end of the line, we spit out a newline, the indent, and then | |
159dd2aa JK |
1115 | the buffered output. */ |
1116 | ||
1117 | /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which | |
1118 | are waiting to be output (they have already been counted in chars_printed). | |
1119 | When wrap_buffer[0] is null, the buffer is empty. */ | |
1120 | static char *wrap_buffer; | |
bd5635a1 | 1121 | |
159dd2aa JK |
1122 | /* Pointer in wrap_buffer to the next character to fill. */ |
1123 | static char *wrap_pointer; | |
bd5635a1 | 1124 | |
159dd2aa JK |
1125 | /* String to indent by if the wrap occurs. Must not be NULL if wrap_column |
1126 | is non-zero. */ | |
1127 | static char *wrap_indent; | |
1128 | ||
1129 | /* Column number on the screen where wrap_buffer begins, or 0 if wrapping | |
1130 | is not in effect. */ | |
bd5635a1 RP |
1131 | static int wrap_column; |
1132 | ||
e1ce8aa5 | 1133 | /* ARGSUSED */ |
bd5635a1 RP |
1134 | static void |
1135 | set_width_command (args, from_tty, c) | |
1136 | char *args; | |
1137 | int from_tty; | |
1138 | struct cmd_list_element *c; | |
1139 | { | |
1140 | if (!wrap_buffer) | |
1141 | { | |
1142 | wrap_buffer = (char *) xmalloc (chars_per_line + 2); | |
1143 | wrap_buffer[0] = '\0'; | |
1144 | } | |
1145 | else | |
1146 | wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2); | |
1147 | wrap_pointer = wrap_buffer; /* Start it at the beginning */ | |
1148 | } | |
1149 | ||
d974236f JG |
1150 | /* Wait, so the user can read what's on the screen. Prompt the user |
1151 | to continue by pressing RETURN. */ | |
1152 | ||
bd5635a1 RP |
1153 | static void |
1154 | prompt_for_continue () | |
1155 | { | |
351b221d | 1156 | char *ignore; |
d8742f46 JK |
1157 | char cont_prompt[120]; |
1158 | ||
4dd876ac JK |
1159 | if (annotation_level > 1) |
1160 | printf_unfiltered ("\n\032\032pre-prompt-for-continue\n"); | |
1161 | ||
d8742f46 JK |
1162 | strcpy (cont_prompt, |
1163 | "---Type <return> to continue, or q <return> to quit---"); | |
1164 | if (annotation_level > 1) | |
1165 | strcat (cont_prompt, "\n\032\032prompt-for-continue\n"); | |
351b221d | 1166 | |
d974236f JG |
1167 | /* We must do this *before* we call gdb_readline, else it will eventually |
1168 | call us -- thinking that we're trying to print beyond the end of the | |
1169 | screen. */ | |
1170 | reinitialize_more_filter (); | |
1171 | ||
bd5635a1 | 1172 | immediate_quit++; |
159dd2aa JK |
1173 | /* On a real operating system, the user can quit with SIGINT. |
1174 | But not on GO32. | |
1175 | ||
1176 | 'q' is provided on all systems so users don't have to change habits | |
1177 | from system to system, and because telling them what to do in | |
1178 | the prompt is more user-friendly than expecting them to think of | |
1179 | SIGINT. */ | |
a94100d1 JK |
1180 | /* Call readline, not gdb_readline, because GO32 readline handles control-C |
1181 | whereas control-C to gdb_readline will cause the user to get dumped | |
1182 | out to DOS. */ | |
d8742f46 | 1183 | ignore = readline (cont_prompt); |
4dd876ac JK |
1184 | |
1185 | if (annotation_level > 1) | |
1186 | printf_unfiltered ("\n\032\032post-prompt-for-continue\n"); | |
1187 | ||
351b221d | 1188 | if (ignore) |
159dd2aa JK |
1189 | { |
1190 | char *p = ignore; | |
1191 | while (*p == ' ' || *p == '\t') | |
1192 | ++p; | |
1193 | if (p[0] == 'q') | |
1194 | request_quit (SIGINT); | |
1195 | free (ignore); | |
1196 | } | |
bd5635a1 | 1197 | immediate_quit--; |
d974236f JG |
1198 | |
1199 | /* Now we have to do this again, so that GDB will know that it doesn't | |
1200 | need to save the ---Type <return>--- line at the top of the screen. */ | |
1201 | reinitialize_more_filter (); | |
1202 | ||
351b221d | 1203 | dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ |
bd5635a1 RP |
1204 | } |
1205 | ||
1206 | /* Reinitialize filter; ie. tell it to reset to original values. */ | |
1207 | ||
1208 | void | |
1209 | reinitialize_more_filter () | |
1210 | { | |
1211 | lines_printed = 0; | |
1212 | chars_printed = 0; | |
1213 | } | |
1214 | ||
1215 | /* Indicate that if the next sequence of characters overflows the line, | |
1216 | a newline should be inserted here rather than when it hits the end. | |
159dd2aa | 1217 | If INDENT is non-null, it is a string to be printed to indent the |
bd5635a1 RP |
1218 | wrapped part on the next line. INDENT must remain accessible until |
1219 | the next call to wrap_here() or until a newline is printed through | |
1220 | fputs_filtered(). | |
1221 | ||
1222 | If the line is already overfull, we immediately print a newline and | |
1223 | the indentation, and disable further wrapping. | |
1224 | ||
2bc2e684 FF |
1225 | If we don't know the width of lines, but we know the page height, |
1226 | we must not wrap words, but should still keep track of newlines | |
1227 | that were explicitly printed. | |
1228 | ||
159dd2aa JK |
1229 | INDENT should not contain tabs, as that will mess up the char count |
1230 | on the next line. FIXME. | |
1231 | ||
1232 | This routine is guaranteed to force out any output which has been | |
1233 | squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be | |
1234 | used to force out output from the wrap_buffer. */ | |
bd5635a1 RP |
1235 | |
1236 | void | |
1237 | wrap_here(indent) | |
159dd2aa | 1238 | char *indent; |
bd5635a1 | 1239 | { |
cad1498f SG |
1240 | /* This should have been allocated, but be paranoid anyway. */ |
1241 | if (!wrap_buffer) | |
1242 | abort (); | |
1243 | ||
bd5635a1 RP |
1244 | if (wrap_buffer[0]) |
1245 | { | |
1246 | *wrap_pointer = '\0'; | |
d8fc8773 | 1247 | fputs_unfiltered (wrap_buffer, gdb_stdout); |
bd5635a1 RP |
1248 | } |
1249 | wrap_pointer = wrap_buffer; | |
1250 | wrap_buffer[0] = '\0'; | |
2bc2e684 FF |
1251 | if (chars_per_line == UINT_MAX) /* No line overflow checking */ |
1252 | { | |
1253 | wrap_column = 0; | |
1254 | } | |
1255 | else if (chars_printed >= chars_per_line) | |
bd5635a1 RP |
1256 | { |
1257 | puts_filtered ("\n"); | |
159dd2aa JK |
1258 | if (indent != NULL) |
1259 | puts_filtered (indent); | |
bd5635a1 RP |
1260 | wrap_column = 0; |
1261 | } | |
1262 | else | |
1263 | { | |
1264 | wrap_column = chars_printed; | |
159dd2aa JK |
1265 | if (indent == NULL) |
1266 | wrap_indent = ""; | |
1267 | else | |
1268 | wrap_indent = indent; | |
bd5635a1 RP |
1269 | } |
1270 | } | |
1271 | ||
51b80b00 FF |
1272 | /* Ensure that whatever gets printed next, using the filtered output |
1273 | commands, starts at the beginning of the line. I.E. if there is | |
1274 | any pending output for the current line, flush it and start a new | |
1275 | line. Otherwise do nothing. */ | |
1276 | ||
1277 | void | |
1278 | begin_line () | |
1279 | { | |
1280 | if (chars_printed > 0) | |
1281 | { | |
1282 | puts_filtered ("\n"); | |
1283 | } | |
1284 | } | |
1285 | ||
199b2450 TL |
1286 | |
1287 | GDB_FILE * | |
1288 | gdb_fopen (name, mode) | |
1289 | char * name; | |
1290 | char * mode; | |
1291 | { | |
1292 | return fopen (name, mode); | |
1293 | } | |
1294 | ||
bd5635a1 | 1295 | void |
199b2450 TL |
1296 | gdb_flush (stream) |
1297 | FILE *stream; | |
1298 | { | |
0d172a2e JK |
1299 | if (flush_hook) |
1300 | { | |
1301 | flush_hook (stream); | |
1302 | return; | |
1303 | } | |
1304 | ||
199b2450 TL |
1305 | fflush (stream); |
1306 | } | |
1307 | ||
44a09a68 JK |
1308 | /* Like fputs but if FILTER is true, pause after every screenful. |
1309 | ||
1310 | Regardless of FILTER can wrap at points other than the final | |
1311 | character of a line. | |
1312 | ||
1313 | Unlike fputs, fputs_maybe_filtered does not return a value. | |
1314 | It is OK for LINEBUFFER to be NULL, in which case just don't print | |
1315 | anything. | |
1316 | ||
1317 | Note that a longjmp to top level may occur in this routine (only if | |
1318 | FILTER is true) (since prompt_for_continue may do so) so this | |
1319 | routine should not be called when cleanups are not in place. */ | |
1320 | ||
199b2450 TL |
1321 | static void |
1322 | fputs_maybe_filtered (linebuffer, stream, filter) | |
088c3a0b | 1323 | const char *linebuffer; |
bd5635a1 | 1324 | FILE *stream; |
199b2450 | 1325 | int filter; |
bd5635a1 | 1326 | { |
7919c3ed | 1327 | const char *lineptr; |
bd5635a1 RP |
1328 | |
1329 | if (linebuffer == 0) | |
1330 | return; | |
0d172a2e | 1331 | |
bd5635a1 | 1332 | /* Don't do any filtering if it is disabled. */ |
199b2450 | 1333 | if (stream != gdb_stdout |
bd5635a1 RP |
1334 | || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX)) |
1335 | { | |
d8fc8773 | 1336 | fputs_unfiltered (linebuffer, stream); |
bd5635a1 RP |
1337 | return; |
1338 | } | |
1339 | ||
1340 | /* Go through and output each character. Show line extension | |
1341 | when this is necessary; prompt user for new page when this is | |
1342 | necessary. */ | |
1343 | ||
1344 | lineptr = linebuffer; | |
1345 | while (*lineptr) | |
1346 | { | |
1347 | /* Possible new page. */ | |
199b2450 TL |
1348 | if (filter && |
1349 | (lines_printed >= lines_per_page - 1)) | |
bd5635a1 RP |
1350 | prompt_for_continue (); |
1351 | ||
1352 | while (*lineptr && *lineptr != '\n') | |
1353 | { | |
1354 | /* Print a single line. */ | |
1355 | if (*lineptr == '\t') | |
1356 | { | |
1357 | if (wrap_column) | |
1358 | *wrap_pointer++ = '\t'; | |
1359 | else | |
d8fc8773 | 1360 | fputc_unfiltered ('\t', stream); |
bd5635a1 RP |
1361 | /* Shifting right by 3 produces the number of tab stops |
1362 | we have already passed, and then adding one and | |
1363 | shifting left 3 advances to the next tab stop. */ | |
1364 | chars_printed = ((chars_printed >> 3) + 1) << 3; | |
1365 | lineptr++; | |
1366 | } | |
1367 | else | |
1368 | { | |
1369 | if (wrap_column) | |
1370 | *wrap_pointer++ = *lineptr; | |
1371 | else | |
d8fc8773 | 1372 | fputc_unfiltered (*lineptr, stream); |
bd5635a1 RP |
1373 | chars_printed++; |
1374 | lineptr++; | |
1375 | } | |
1376 | ||
1377 | if (chars_printed >= chars_per_line) | |
1378 | { | |
1379 | unsigned int save_chars = chars_printed; | |
1380 | ||
1381 | chars_printed = 0; | |
1382 | lines_printed++; | |
1383 | /* If we aren't actually wrapping, don't output newline -- | |
1384 | if chars_per_line is right, we probably just overflowed | |
1385 | anyway; if it's wrong, let us keep going. */ | |
1386 | if (wrap_column) | |
d8fc8773 | 1387 | fputc_unfiltered ('\n', stream); |
bd5635a1 RP |
1388 | |
1389 | /* Possible new page. */ | |
1390 | if (lines_printed >= lines_per_page - 1) | |
1391 | prompt_for_continue (); | |
1392 | ||
1393 | /* Now output indentation and wrapped string */ | |
1394 | if (wrap_column) | |
1395 | { | |
d8fc8773 JK |
1396 | fputs_unfiltered (wrap_indent, stream); |
1397 | *wrap_pointer = '\0'; /* Null-terminate saved stuff */ | |
1398 | fputs_unfiltered (wrap_buffer, stream); /* and eject it */ | |
bd5635a1 RP |
1399 | /* FIXME, this strlen is what prevents wrap_indent from |
1400 | containing tabs. However, if we recurse to print it | |
1401 | and count its chars, we risk trouble if wrap_indent is | |
1402 | longer than (the user settable) chars_per_line. | |
1403 | Note also that this can set chars_printed > chars_per_line | |
1404 | if we are printing a long string. */ | |
1405 | chars_printed = strlen (wrap_indent) | |
1406 | + (save_chars - wrap_column); | |
1407 | wrap_pointer = wrap_buffer; /* Reset buffer */ | |
1408 | wrap_buffer[0] = '\0'; | |
1409 | wrap_column = 0; /* And disable fancy wrap */ | |
1410 | } | |
1411 | } | |
1412 | } | |
1413 | ||
1414 | if (*lineptr == '\n') | |
1415 | { | |
1416 | chars_printed = 0; | |
d11c44f1 | 1417 | wrap_here ((char *)0); /* Spit out chars, cancel further wraps */ |
bd5635a1 | 1418 | lines_printed++; |
d8fc8773 | 1419 | fputc_unfiltered ('\n', stream); |
bd5635a1 RP |
1420 | lineptr++; |
1421 | } | |
1422 | } | |
1423 | } | |
1424 | ||
199b2450 TL |
1425 | void |
1426 | fputs_filtered (linebuffer, stream) | |
1427 | const char *linebuffer; | |
1428 | FILE *stream; | |
1429 | { | |
1430 | fputs_maybe_filtered (linebuffer, stream, 1); | |
1431 | } | |
1432 | ||
a7f6f40b JK |
1433 | int |
1434 | putchar_unfiltered (c) | |
199b2450 TL |
1435 | int c; |
1436 | { | |
1437 | char buf[2]; | |
a7f6f40b | 1438 | |
199b2450 TL |
1439 | buf[0] = c; |
1440 | buf[1] = 0; | |
1441 | fputs_unfiltered (buf, gdb_stdout); | |
a7f6f40b | 1442 | return c; |
199b2450 TL |
1443 | } |
1444 | ||
a7f6f40b | 1445 | int |
199b2450 TL |
1446 | fputc_unfiltered (c, stream) |
1447 | int c; | |
1448 | FILE * stream; | |
1449 | { | |
1450 | char buf[2]; | |
a7f6f40b | 1451 | |
199b2450 TL |
1452 | buf[0] = c; |
1453 | buf[1] = 0; | |
1454 | fputs_unfiltered (buf, stream); | |
a7f6f40b | 1455 | return c; |
199b2450 TL |
1456 | } |
1457 | ||
1458 | ||
bd5635a1 RP |
1459 | /* Print a variable number of ARGS using format FORMAT. If this |
1460 | information is going to put the amount written (since the last call | |
d974236f | 1461 | to REINITIALIZE_MORE_FILTER or the last page break) over the page size, |
d8fc8773 | 1462 | call prompt_for_continue to get the users permision to continue. |
bd5635a1 RP |
1463 | |
1464 | Unlike fprintf, this function does not return a value. | |
1465 | ||
1466 | We implement three variants, vfprintf (takes a vararg list and stream), | |
1467 | fprintf (takes a stream to write on), and printf (the usual). | |
1468 | ||
bd5635a1 RP |
1469 | Note also that a longjmp to top level may occur in this routine |
1470 | (since prompt_for_continue may do so) so this routine should not be | |
1471 | called when cleanups are not in place. */ | |
1472 | ||
199b2450 TL |
1473 | static void |
1474 | vfprintf_maybe_filtered (stream, format, args, filter) | |
bd5635a1 RP |
1475 | FILE *stream; |
1476 | char *format; | |
7919c3ed | 1477 | va_list args; |
199b2450 | 1478 | int filter; |
bd5635a1 | 1479 | { |
d8fc8773 JK |
1480 | char *linebuffer; |
1481 | struct cleanup *old_cleanups; | |
bd5635a1 | 1482 | |
d8fc8773 JK |
1483 | vasprintf (&linebuffer, format, args); |
1484 | if (linebuffer == NULL) | |
9c036bd8 JK |
1485 | { |
1486 | fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr); | |
1487 | exit (1); | |
1488 | } | |
d8fc8773 | 1489 | old_cleanups = make_cleanup (free, linebuffer); |
199b2450 | 1490 | fputs_maybe_filtered (linebuffer, stream, filter); |
d8fc8773 | 1491 | do_cleanups (old_cleanups); |
199b2450 TL |
1492 | } |
1493 | ||
1494 | ||
1495 | void | |
1496 | vfprintf_filtered (stream, format, args) | |
1497 | FILE *stream; | |
1498 | char *format; | |
1499 | va_list args; | |
1500 | { | |
1501 | vfprintf_maybe_filtered (stream, format, args, 1); | |
1502 | } | |
1503 | ||
1504 | void | |
1505 | vfprintf_unfiltered (stream, format, args) | |
1506 | FILE *stream; | |
1507 | char *format; | |
1508 | va_list args; | |
1509 | { | |
d8fc8773 JK |
1510 | char *linebuffer; |
1511 | struct cleanup *old_cleanups; | |
1512 | ||
1513 | vasprintf (&linebuffer, format, args); | |
1514 | if (linebuffer == NULL) | |
9c036bd8 JK |
1515 | { |
1516 | fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr); | |
1517 | exit (1); | |
1518 | } | |
d8fc8773 JK |
1519 | old_cleanups = make_cleanup (free, linebuffer); |
1520 | fputs_unfiltered (linebuffer, stream); | |
1521 | do_cleanups (old_cleanups); | |
bd5635a1 RP |
1522 | } |
1523 | ||
51b80b00 FF |
1524 | void |
1525 | vprintf_filtered (format, args) | |
1526 | char *format; | |
1527 | va_list args; | |
1528 | { | |
199b2450 TL |
1529 | vfprintf_maybe_filtered (gdb_stdout, format, args, 1); |
1530 | } | |
1531 | ||
1532 | void | |
1533 | vprintf_unfiltered (format, args) | |
1534 | char *format; | |
1535 | va_list args; | |
1536 | { | |
d8fc8773 | 1537 | vfprintf_unfiltered (gdb_stdout, format, args); |
51b80b00 FF |
1538 | } |
1539 | ||
bd5635a1 RP |
1540 | /* VARARGS */ |
1541 | void | |
85c613aa C |
1542 | #ifdef __STDC__ |
1543 | fprintf_filtered (FILE *stream, char *format, ...) | |
1544 | #else | |
bd5635a1 RP |
1545 | fprintf_filtered (va_alist) |
1546 | va_dcl | |
85c613aa | 1547 | #endif |
bd5635a1 | 1548 | { |
546014f7 | 1549 | va_list args; |
85c613aa C |
1550 | #ifdef __STDC__ |
1551 | va_start (args, format); | |
1552 | #else | |
bd5635a1 RP |
1553 | FILE *stream; |
1554 | char *format; | |
546014f7 PB |
1555 | |
1556 | va_start (args); | |
1557 | stream = va_arg (args, FILE *); | |
1558 | format = va_arg (args, char *); | |
85c613aa | 1559 | #endif |
546014f7 PB |
1560 | vfprintf_filtered (stream, format, args); |
1561 | va_end (args); | |
1562 | } | |
1563 | ||
199b2450 TL |
1564 | /* VARARGS */ |
1565 | void | |
85c613aa C |
1566 | #ifdef __STDC__ |
1567 | fprintf_unfiltered (FILE *stream, char *format, ...) | |
1568 | #else | |
199b2450 TL |
1569 | fprintf_unfiltered (va_alist) |
1570 | va_dcl | |
85c613aa | 1571 | #endif |
199b2450 TL |
1572 | { |
1573 | va_list args; | |
85c613aa C |
1574 | #ifdef __STDC__ |
1575 | va_start (args, format); | |
1576 | #else | |
199b2450 TL |
1577 | FILE *stream; |
1578 | char *format; | |
1579 | ||
1580 | va_start (args); | |
1581 | stream = va_arg (args, FILE *); | |
1582 | format = va_arg (args, char *); | |
85c613aa | 1583 | #endif |
199b2450 TL |
1584 | vfprintf_unfiltered (stream, format, args); |
1585 | va_end (args); | |
1586 | } | |
1587 | ||
d8fc8773 | 1588 | /* Like fprintf_filtered, but prints its result indented. |
199b2450 | 1589 | Called as fprintfi_filtered (spaces, stream, format, ...); */ |
546014f7 PB |
1590 | |
1591 | /* VARARGS */ | |
1592 | void | |
85c613aa C |
1593 | #ifdef __STDC__ |
1594 | fprintfi_filtered (int spaces, FILE *stream, char *format, ...) | |
1595 | #else | |
546014f7 PB |
1596 | fprintfi_filtered (va_alist) |
1597 | va_dcl | |
85c613aa | 1598 | #endif |
546014f7 | 1599 | { |
7919c3ed | 1600 | va_list args; |
85c613aa C |
1601 | #ifdef __STDC__ |
1602 | va_start (args, format); | |
1603 | #else | |
546014f7 PB |
1604 | int spaces; |
1605 | FILE *stream; | |
1606 | char *format; | |
bd5635a1 RP |
1607 | |
1608 | va_start (args); | |
546014f7 | 1609 | spaces = va_arg (args, int); |
bd5635a1 RP |
1610 | stream = va_arg (args, FILE *); |
1611 | format = va_arg (args, char *); | |
85c613aa | 1612 | #endif |
546014f7 | 1613 | print_spaces_filtered (spaces, stream); |
bd5635a1 | 1614 | |
7919c3ed | 1615 | vfprintf_filtered (stream, format, args); |
bd5635a1 RP |
1616 | va_end (args); |
1617 | } | |
1618 | ||
199b2450 | 1619 | |
bd5635a1 RP |
1620 | /* VARARGS */ |
1621 | void | |
85c613aa C |
1622 | #ifdef __STDC__ |
1623 | printf_filtered (char *format, ...) | |
1624 | #else | |
bd5635a1 RP |
1625 | printf_filtered (va_alist) |
1626 | va_dcl | |
85c613aa | 1627 | #endif |
bd5635a1 RP |
1628 | { |
1629 | va_list args; | |
85c613aa C |
1630 | #ifdef __STDC__ |
1631 | va_start (args, format); | |
1632 | #else | |
bd5635a1 RP |
1633 | char *format; |
1634 | ||
1635 | va_start (args); | |
1636 | format = va_arg (args, char *); | |
85c613aa | 1637 | #endif |
199b2450 TL |
1638 | vfprintf_filtered (gdb_stdout, format, args); |
1639 | va_end (args); | |
1640 | } | |
1641 | ||
1642 | ||
1643 | /* VARARGS */ | |
1644 | void | |
85c613aa C |
1645 | #ifdef __STDC__ |
1646 | printf_unfiltered (char *format, ...) | |
1647 | #else | |
199b2450 TL |
1648 | printf_unfiltered (va_alist) |
1649 | va_dcl | |
85c613aa | 1650 | #endif |
199b2450 TL |
1651 | { |
1652 | va_list args; | |
85c613aa C |
1653 | #ifdef __STDC__ |
1654 | va_start (args, format); | |
1655 | #else | |
199b2450 TL |
1656 | char *format; |
1657 | ||
1658 | va_start (args); | |
1659 | format = va_arg (args, char *); | |
85c613aa | 1660 | #endif |
199b2450 | 1661 | vfprintf_unfiltered (gdb_stdout, format, args); |
bd5635a1 RP |
1662 | va_end (args); |
1663 | } | |
bd5635a1 | 1664 | |
546014f7 | 1665 | /* Like printf_filtered, but prints it's result indented. |
199b2450 | 1666 | Called as printfi_filtered (spaces, format, ...); */ |
546014f7 PB |
1667 | |
1668 | /* VARARGS */ | |
1669 | void | |
85c613aa C |
1670 | #ifdef __STDC__ |
1671 | printfi_filtered (int spaces, char *format, ...) | |
1672 | #else | |
546014f7 PB |
1673 | printfi_filtered (va_alist) |
1674 | va_dcl | |
85c613aa | 1675 | #endif |
546014f7 PB |
1676 | { |
1677 | va_list args; | |
85c613aa C |
1678 | #ifdef __STDC__ |
1679 | va_start (args, format); | |
1680 | #else | |
546014f7 PB |
1681 | int spaces; |
1682 | char *format; | |
1683 | ||
1684 | va_start (args); | |
1685 | spaces = va_arg (args, int); | |
1686 | format = va_arg (args, char *); | |
85c613aa | 1687 | #endif |
199b2450 TL |
1688 | print_spaces_filtered (spaces, gdb_stdout); |
1689 | vfprintf_filtered (gdb_stdout, format, args); | |
546014f7 PB |
1690 | va_end (args); |
1691 | } | |
1692 | ||
51b80b00 FF |
1693 | /* Easy -- but watch out! |
1694 | ||
1695 | This routine is *not* a replacement for puts()! puts() appends a newline. | |
1696 | This one doesn't, and had better not! */ | |
bd5635a1 RP |
1697 | |
1698 | void | |
1699 | puts_filtered (string) | |
1700 | char *string; | |
1701 | { | |
199b2450 TL |
1702 | fputs_filtered (string, gdb_stdout); |
1703 | } | |
1704 | ||
1705 | void | |
1706 | puts_unfiltered (string) | |
1707 | char *string; | |
1708 | { | |
1709 | fputs_unfiltered (string, gdb_stdout); | |
bd5635a1 RP |
1710 | } |
1711 | ||
1712 | /* Return a pointer to N spaces and a null. The pointer is good | |
1713 | until the next call to here. */ | |
1714 | char * | |
1715 | n_spaces (n) | |
1716 | int n; | |
1717 | { | |
1718 | register char *t; | |
1719 | static char *spaces; | |
1720 | static int max_spaces; | |
1721 | ||
1722 | if (n > max_spaces) | |
1723 | { | |
1724 | if (spaces) | |
1725 | free (spaces); | |
3624c875 | 1726 | spaces = (char *) xmalloc (n+1); |
bd5635a1 RP |
1727 | for (t = spaces+n; t != spaces;) |
1728 | *--t = ' '; | |
1729 | spaces[n] = '\0'; | |
1730 | max_spaces = n; | |
1731 | } | |
1732 | ||
1733 | return spaces + max_spaces - n; | |
1734 | } | |
1735 | ||
1736 | /* Print N spaces. */ | |
1737 | void | |
1738 | print_spaces_filtered (n, stream) | |
1739 | int n; | |
1740 | FILE *stream; | |
1741 | { | |
1742 | fputs_filtered (n_spaces (n), stream); | |
1743 | } | |
1744 | \f | |
1745 | /* C++ demangler stuff. */ | |
bd5635a1 | 1746 | |
65ce5df4 JG |
1747 | /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language |
1748 | LANG, using demangling args ARG_MODE, and print it filtered to STREAM. | |
1749 | If the name is not mangled, or the language for the name is unknown, or | |
1750 | demangling is off, the name is printed in its "raw" form. */ | |
1751 | ||
bd5635a1 | 1752 | void |
65ce5df4 | 1753 | fprintf_symbol_filtered (stream, name, lang, arg_mode) |
bd5635a1 RP |
1754 | FILE *stream; |
1755 | char *name; | |
65ce5df4 JG |
1756 | enum language lang; |
1757 | int arg_mode; | |
bd5635a1 | 1758 | { |
65ce5df4 | 1759 | char *demangled; |
bd5d07d9 | 1760 | |
65ce5df4 | 1761 | if (name != NULL) |
bd5d07d9 | 1762 | { |
65ce5df4 JG |
1763 | /* If user wants to see raw output, no problem. */ |
1764 | if (!demangle) | |
bd5d07d9 | 1765 | { |
65ce5df4 JG |
1766 | fputs_filtered (name, stream); |
1767 | } | |
1768 | else | |
1769 | { | |
1770 | switch (lang) | |
1771 | { | |
1772 | case language_cplus: | |
1773 | demangled = cplus_demangle (name, arg_mode); | |
1774 | break; | |
65ce5df4 JG |
1775 | case language_chill: |
1776 | demangled = chill_demangle (name); | |
1777 | break; | |
65ce5df4 JG |
1778 | default: |
1779 | demangled = NULL; | |
1780 | break; | |
1781 | } | |
1782 | fputs_filtered (demangled ? demangled : name, stream); | |
1783 | if (demangled != NULL) | |
1784 | { | |
1785 | free (demangled); | |
1786 | } | |
bd5d07d9 | 1787 | } |
bd5635a1 RP |
1788 | } |
1789 | } | |
51b57ded FF |
1790 | |
1791 | /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any | |
1792 | differences in whitespace. Returns 0 if they match, non-zero if they | |
546014f7 PB |
1793 | don't (slightly different than strcmp()'s range of return values). |
1794 | ||
1795 | As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO". | |
2e4964ad FF |
1796 | This "feature" is useful when searching for matching C++ function names |
1797 | (such as if the user types 'break FOO', where FOO is a mangled C++ | |
1798 | function). */ | |
51b57ded | 1799 | |
51b80b00 | 1800 | int |
51b57ded FF |
1801 | strcmp_iw (string1, string2) |
1802 | const char *string1; | |
1803 | const char *string2; | |
1804 | { | |
1805 | while ((*string1 != '\0') && (*string2 != '\0')) | |
1806 | { | |
1807 | while (isspace (*string1)) | |
1808 | { | |
1809 | string1++; | |
1810 | } | |
1811 | while (isspace (*string2)) | |
1812 | { | |
1813 | string2++; | |
1814 | } | |
1815 | if (*string1 != *string2) | |
1816 | { | |
1817 | break; | |
1818 | } | |
1819 | if (*string1 != '\0') | |
1820 | { | |
1821 | string1++; | |
1822 | string2++; | |
1823 | } | |
1824 | } | |
546014f7 | 1825 | return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0'); |
51b57ded FF |
1826 | } |
1827 | ||
bd5635a1 | 1828 | \f |
bd5635a1 | 1829 | void |
0d172a2e | 1830 | initialize_utils () |
bd5635a1 RP |
1831 | { |
1832 | struct cmd_list_element *c; | |
1833 | ||
1834 | c = add_set_cmd ("width", class_support, var_uinteger, | |
1835 | (char *)&chars_per_line, | |
1836 | "Set number of characters gdb thinks are in a line.", | |
1837 | &setlist); | |
1838 | add_show_from_set (c, &showlist); | |
d747e0af | 1839 | c->function.sfunc = set_width_command; |
bd5635a1 RP |
1840 | |
1841 | add_show_from_set | |
1842 | (add_set_cmd ("height", class_support, | |
1843 | var_uinteger, (char *)&lines_per_page, | |
1844 | "Set number of lines gdb thinks are in a page.", &setlist), | |
1845 | &showlist); | |
1846 | ||
1847 | /* These defaults will be used if we are unable to get the correct | |
1848 | values from termcap. */ | |
0d172a2e | 1849 | #if defined(__GO32__) || defined(WIN32) |
51b57ded FF |
1850 | lines_per_page = ScreenRows(); |
1851 | chars_per_line = ScreenCols(); | |
1852 | #else | |
bd5635a1 RP |
1853 | lines_per_page = 24; |
1854 | chars_per_line = 80; | |
49073be0 | 1855 | |
a6b26c44 SS |
1856 | #ifndef MPW |
1857 | /* No termcap under MPW, although might be cool to do something | |
1858 | by looking at worksheet or console window sizes. */ | |
bd5635a1 RP |
1859 | /* Initialize the screen height and width from termcap. */ |
1860 | { | |
1861 | char *termtype = getenv ("TERM"); | |
1862 | ||
1863 | /* Positive means success, nonpositive means failure. */ | |
1864 | int status; | |
1865 | ||
1866 | /* 2048 is large enough for all known terminals, according to the | |
1867 | GNU termcap manual. */ | |
1868 | char term_buffer[2048]; | |
1869 | ||
1870 | if (termtype) | |
1871 | { | |
1872 | status = tgetent (term_buffer, termtype); | |
1873 | if (status > 0) | |
1874 | { | |
1875 | int val; | |
1876 | ||
1877 | val = tgetnum ("li"); | |
1878 | if (val >= 0) | |
1879 | lines_per_page = val; | |
1880 | else | |
1881 | /* The number of lines per page is not mentioned | |
1882 | in the terminal description. This probably means | |
1883 | that paging is not useful (e.g. emacs shell window), | |
1884 | so disable paging. */ | |
1885 | lines_per_page = UINT_MAX; | |
1886 | ||
1887 | val = tgetnum ("co"); | |
1888 | if (val >= 0) | |
1889 | chars_per_line = val; | |
1890 | } | |
1891 | } | |
1892 | } | |
a6b26c44 | 1893 | #endif /* MPW */ |
bd5635a1 | 1894 | |
1eeba686 PB |
1895 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) |
1896 | ||
4ace50a5 | 1897 | /* If there is a better way to determine the window size, use it. */ |
1eeba686 PB |
1898 | SIGWINCH_HANDLER (); |
1899 | #endif | |
51b57ded | 1900 | #endif |
2bc2e684 | 1901 | /* If the output is not a terminal, don't paginate it. */ |
199b2450 | 1902 | if (!ISATTY (gdb_stdout)) |
2bc2e684 FF |
1903 | lines_per_page = UINT_MAX; |
1904 | ||
bd5635a1 RP |
1905 | set_width_command ((char *)NULL, 0, c); |
1906 | ||
1907 | add_show_from_set | |
1908 | (add_set_cmd ("demangle", class_support, var_boolean, | |
1909 | (char *)&demangle, | |
1910 | "Set demangling of encoded C++ names when displaying symbols.", | |
f266e564 JK |
1911 | &setprintlist), |
1912 | &showprintlist); | |
bd5635a1 RP |
1913 | |
1914 | add_show_from_set | |
1915 | (add_set_cmd ("sevenbit-strings", class_support, var_boolean, | |
1916 | (char *)&sevenbit_strings, | |
1917 | "Set printing of 8-bit characters in strings as \\nnn.", | |
f266e564 JK |
1918 | &setprintlist), |
1919 | &showprintlist); | |
bd5635a1 RP |
1920 | |
1921 | add_show_from_set | |
1922 | (add_set_cmd ("asm-demangle", class_support, var_boolean, | |
1923 | (char *)&asm_demangle, | |
1924 | "Set demangling of C++ names in disassembly listings.", | |
f266e564 JK |
1925 | &setprintlist), |
1926 | &showprintlist); | |
bd5635a1 | 1927 | } |
1eeba686 PB |
1928 | |
1929 | /* Machine specific function to handle SIGWINCH signal. */ | |
1930 | ||
1931 | #ifdef SIGWINCH_HANDLER_BODY | |
1932 | SIGWINCH_HANDLER_BODY | |
1933 | #endif | |
bd5d07d9 | 1934 |