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 | 17 | along with this program; if not, write to the Free Software |
dedcc91d | 18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
bd5635a1 | 19 | |
d747e0af | 20 | #include "defs.h" |
a243a22f | 21 | #if !defined(__GO32__) && !defined(__WIN32__) && !defined(MPW) |
bd5635a1 RP |
22 | #include <sys/ioctl.h> |
23 | #include <sys/param.h> | |
24 | #include <pwd.h> | |
51b57ded | 25 | #endif |
45993f61 | 26 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
27 | #include <stdarg.h> |
28 | #else | |
2bc2e684 | 29 | #include <varargs.h> |
85c613aa | 30 | #endif |
2bc2e684 | 31 | #include <ctype.h> |
2b576293 | 32 | #include "gdb_string.h" |
1a494973 C |
33 | #ifdef HAVE_UNISTD_H |
34 | #include <unistd.h> | |
35 | #endif | |
2bc2e684 | 36 | |
bd5635a1 RP |
37 | #include "signals.h" |
38 | #include "gdbcmd.h" | |
159dd2aa | 39 | #include "serial.h" |
bd5635a1 RP |
40 | #include "bfd.h" |
41 | #include "target.h" | |
bcf2e6ab | 42 | #include "demangle.h" |
bd5d07d9 FF |
43 | #include "expression.h" |
44 | #include "language.h" | |
1c95d7ab | 45 | #include "annotate.h" |
bd5635a1 | 46 | |
d8742f46 JK |
47 | #include "readline.h" |
48 | ||
49 | /* readline defines this. */ | |
50 | #undef savestring | |
51 | ||
7919c3ed JG |
52 | /* Prototypes for local functions */ |
53 | ||
7919c3ed | 54 | static void |
85c613aa | 55 | fatal_dump_core PARAMS((char *, ...)); |
7919c3ed JG |
56 | |
57 | static void | |
58 | prompt_for_continue PARAMS ((void)); | |
59 | ||
60 | static void | |
61 | set_width_command PARAMS ((char *, int, struct cmd_list_element *)); | |
62 | ||
bd5635a1 RP |
63 | /* If this definition isn't overridden by the header files, assume |
64 | that isatty and fileno exist on this system. */ | |
65 | #ifndef ISATTY | |
66 | #define ISATTY(FP) (isatty (fileno (FP))) | |
67 | #endif | |
68 | ||
bd5635a1 RP |
69 | /* Chain of cleanup actions established with make_cleanup, |
70 | to be executed if an error happens. */ | |
71 | ||
72 | static struct cleanup *cleanup_chain; | |
73 | ||
16d2cc80 SS |
74 | /* Nonzero if we have job control. */ |
75 | ||
76 | int job_control; | |
77 | ||
bd5635a1 RP |
78 | /* Nonzero means a quit has been requested. */ |
79 | ||
80 | int quit_flag; | |
81 | ||
159dd2aa JK |
82 | /* Nonzero means quit immediately if Control-C is typed now, rather |
83 | than waiting until QUIT is executed. Be careful in setting this; | |
84 | code which executes with immediate_quit set has to be very careful | |
85 | about being able to deal with being interrupted at any time. It is | |
86 | almost always better to use QUIT; the only exception I can think of | |
87 | is being able to quit out of a system call (using EINTR loses if | |
88 | the SIGINT happens between the previous QUIT and the system call). | |
89 | To immediately quit in the case in which a SIGINT happens between | |
90 | the previous QUIT and setting immediate_quit (desirable anytime we | |
91 | expect to block), call QUIT after setting immediate_quit. */ | |
bd5635a1 RP |
92 | |
93 | int immediate_quit; | |
94 | ||
95 | /* Nonzero means that encoded C++ names should be printed out in their | |
96 | C++ form rather than raw. */ | |
97 | ||
98 | int demangle = 1; | |
99 | ||
100 | /* Nonzero means that encoded C++ names should be printed out in their | |
101 | C++ form even in assembler language displays. If this is set, but | |
102 | DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */ | |
103 | ||
104 | int asm_demangle = 0; | |
105 | ||
106 | /* Nonzero means that strings with character values >0x7F should be printed | |
107 | as octal escapes. Zero means just print the value (e.g. it's an | |
108 | international character, and the terminal or window can cope.) */ | |
109 | ||
110 | int sevenbit_strings = 0; | |
81066208 JG |
111 | |
112 | /* String to be printed before error messages, if any. */ | |
113 | ||
114 | char *error_pre_print; | |
49073be0 SS |
115 | |
116 | /* String to be printed before quit messages, if any. */ | |
117 | ||
118 | char *quit_pre_print; | |
119 | ||
120 | /* String to be printed before warning messages, if any. */ | |
121 | ||
3624c875 | 122 | char *warning_pre_print = "\nwarning: "; |
bd5635a1 RP |
123 | \f |
124 | /* Add a new cleanup to the cleanup_chain, | |
125 | and return the previous chain pointer | |
126 | to be passed later to do_cleanups or discard_cleanups. | |
127 | Args are FUNCTION to clean up with, and ARG to pass to it. */ | |
128 | ||
129 | struct cleanup * | |
130 | make_cleanup (function, arg) | |
7919c3ed JG |
131 | void (*function) PARAMS ((PTR)); |
132 | PTR arg; | |
bd5635a1 RP |
133 | { |
134 | register struct cleanup *new | |
135 | = (struct cleanup *) xmalloc (sizeof (struct cleanup)); | |
136 | register struct cleanup *old_chain = cleanup_chain; | |
137 | ||
138 | new->next = cleanup_chain; | |
139 | new->function = function; | |
140 | new->arg = arg; | |
141 | cleanup_chain = new; | |
142 | ||
143 | return old_chain; | |
144 | } | |
145 | ||
146 | /* Discard cleanups and do the actions they describe | |
147 | until we get back to the point OLD_CHAIN in the cleanup_chain. */ | |
148 | ||
149 | void | |
150 | do_cleanups (old_chain) | |
151 | register struct cleanup *old_chain; | |
152 | { | |
153 | register struct cleanup *ptr; | |
154 | while ((ptr = cleanup_chain) != old_chain) | |
155 | { | |
5e5215eb | 156 | cleanup_chain = ptr->next; /* Do this first incase recursion */ |
bd5635a1 | 157 | (*ptr->function) (ptr->arg); |
bd5635a1 RP |
158 | free (ptr); |
159 | } | |
160 | } | |
161 | ||
162 | /* Discard cleanups, not doing the actions they describe, | |
163 | until we get back to the point OLD_CHAIN in the cleanup_chain. */ | |
164 | ||
165 | void | |
166 | discard_cleanups (old_chain) | |
167 | register struct cleanup *old_chain; | |
168 | { | |
169 | register struct cleanup *ptr; | |
170 | while ((ptr = cleanup_chain) != old_chain) | |
171 | { | |
172 | cleanup_chain = ptr->next; | |
be772100 | 173 | free ((PTR)ptr); |
bd5635a1 RP |
174 | } |
175 | } | |
176 | ||
177 | /* Set the cleanup_chain to 0, and return the old cleanup chain. */ | |
178 | struct cleanup * | |
179 | save_cleanups () | |
180 | { | |
181 | struct cleanup *old_chain = cleanup_chain; | |
182 | ||
183 | cleanup_chain = 0; | |
184 | return old_chain; | |
185 | } | |
186 | ||
187 | /* Restore the cleanup chain from a previously saved chain. */ | |
188 | void | |
189 | restore_cleanups (chain) | |
190 | struct cleanup *chain; | |
191 | { | |
192 | cleanup_chain = chain; | |
193 | } | |
194 | ||
195 | /* This function is useful for cleanups. | |
196 | Do | |
197 | ||
198 | foo = xmalloc (...); | |
199 | old_chain = make_cleanup (free_current_contents, &foo); | |
200 | ||
201 | to arrange to free the object thus allocated. */ | |
202 | ||
203 | void | |
204 | free_current_contents (location) | |
205 | char **location; | |
206 | { | |
207 | free (*location); | |
208 | } | |
088c3a0b JG |
209 | |
210 | /* Provide a known function that does nothing, to use as a base for | |
211 | for a possibly long chain of cleanups. This is useful where we | |
212 | use the cleanup chain for handling normal cleanups as well as dealing | |
213 | with cleanups that need to be done as a result of a call to error(). | |
214 | In such cases, we may not be certain where the first cleanup is, unless | |
215 | we have a do-nothing one to always use as the base. */ | |
216 | ||
217 | /* ARGSUSED */ | |
218 | void | |
219 | null_cleanup (arg) | |
220 | char **arg; | |
221 | { | |
222 | } | |
223 | ||
bd5635a1 | 224 | \f |
8989d4fc JK |
225 | /* Print a warning message. Way to use this is to call warning_begin, |
226 | output the warning message (use unfiltered output to gdb_stderr), | |
227 | ending in a newline. There is not currently a warning_end that you | |
228 | call afterwards, but such a thing might be added if it is useful | |
229 | for a GUI to separate warning messages from other output. | |
230 | ||
231 | FIXME: Why do warnings use unfiltered output and errors filtered? | |
232 | Is this anything other than a historical accident? */ | |
2bc2e684 FF |
233 | |
234 | void | |
8989d4fc | 235 | warning_begin () |
2bc2e684 FF |
236 | { |
237 | target_terminal_ours (); | |
238 | wrap_here(""); /* Force out any buffered output */ | |
199b2450 | 239 | gdb_flush (gdb_stdout); |
8989d4fc JK |
240 | if (warning_pre_print) |
241 | fprintf_unfiltered (gdb_stderr, warning_pre_print); | |
2bc2e684 FF |
242 | } |
243 | ||
244 | /* Print a warning message. | |
245 | The first argument STRING is the warning message, used as a fprintf string, | |
246 | and the remaining args are passed as arguments to it. | |
247 | The primary difference between warnings and errors is that a warning | |
8989d4fc | 248 | does not force the return to command level. */ |
2bc2e684 FF |
249 | |
250 | /* VARARGS */ | |
251 | void | |
45993f61 | 252 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
253 | warning (char *string, ...) |
254 | #else | |
2bc2e684 FF |
255 | warning (va_alist) |
256 | va_dcl | |
85c613aa | 257 | #endif |
2bc2e684 FF |
258 | { |
259 | va_list args; | |
45993f61 | 260 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
261 | va_start (args, string); |
262 | #else | |
2bc2e684 FF |
263 | char *string; |
264 | ||
265 | va_start (args); | |
2bc2e684 | 266 | string = va_arg (args, char *); |
85c613aa C |
267 | #endif |
268 | warning_begin (); | |
199b2450 TL |
269 | vfprintf_unfiltered (gdb_stderr, string, args); |
270 | fprintf_unfiltered (gdb_stderr, "\n"); | |
2bc2e684 FF |
271 | va_end (args); |
272 | } | |
273 | ||
a0cf4681 | 274 | /* Start the printing of an error message. Way to use this is to call |
8989d4fc JK |
275 | this, output the error message (use filtered output to gdb_stderr |
276 | (FIXME: Some callers, like memory_error, use gdb_stdout)), ending | |
277 | in a newline, and then call return_to_top_level (RETURN_ERROR). | |
278 | error() provides a convenient way to do this for the special case | |
279 | that the error message can be formatted with a single printf call, | |
280 | but this is more general. */ | |
a0cf4681 JK |
281 | void |
282 | error_begin () | |
283 | { | |
284 | target_terminal_ours (); | |
285 | wrap_here (""); /* Force out any buffered output */ | |
286 | gdb_flush (gdb_stdout); | |
287 | ||
1c95d7ab | 288 | annotate_error_begin (); |
a0cf4681 JK |
289 | |
290 | if (error_pre_print) | |
291 | fprintf_filtered (gdb_stderr, error_pre_print); | |
292 | } | |
293 | ||
bd5635a1 RP |
294 | /* Print an error message and return to command level. |
295 | The first argument STRING is the error message, used as a fprintf string, | |
296 | and the remaining args are passed as arguments to it. */ | |
297 | ||
45993f61 | 298 | #ifdef ANSI_PROTOTYPES |
7919c3ed | 299 | NORETURN void |
85c613aa C |
300 | error (char *string, ...) |
301 | #else | |
1a494973 | 302 | void |
bd5635a1 RP |
303 | error (va_alist) |
304 | va_dcl | |
85c613aa | 305 | #endif |
bd5635a1 RP |
306 | { |
307 | va_list args; | |
1a494973 | 308 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
309 | va_start (args, string); |
310 | #else | |
bd5635a1 | 311 | va_start (args); |
85c613aa | 312 | #endif |
45993f61 | 313 | if (error_hook) |
1a494973 | 314 | (*error_hook) (); |
45993f61 SC |
315 | else |
316 | { | |
45993f61 SC |
317 | error_begin (); |
318 | #ifdef ANSI_PROTOTYPES | |
319 | vfprintf_filtered (gdb_stderr, string, args); | |
320 | #else | |
1a494973 C |
321 | { |
322 | char *string1; | |
323 | ||
324 | string1 = va_arg (args, char *); | |
325 | vfprintf_filtered (gdb_stderr, string1, args); | |
326 | } | |
45993f61 SC |
327 | #endif |
328 | fprintf_filtered (gdb_stderr, "\n"); | |
329 | va_end (args); | |
330 | return_to_top_level (RETURN_ERROR); | |
331 | } | |
bd5635a1 RP |
332 | } |
333 | ||
45993f61 | 334 | |
bd5635a1 RP |
335 | /* Print an error message and exit reporting failure. |
336 | This is for a error that we cannot continue from. | |
7919c3ed JG |
337 | The arguments are printed a la printf. |
338 | ||
339 | This function cannot be declared volatile (NORETURN) in an | |
340 | ANSI environment because exit() is not declared volatile. */ | |
bd5635a1 RP |
341 | |
342 | /* VARARGS */ | |
7919c3ed | 343 | NORETURN void |
45993f61 | 344 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
345 | fatal (char *string, ...) |
346 | #else | |
bd5635a1 RP |
347 | fatal (va_alist) |
348 | va_dcl | |
85c613aa | 349 | #endif |
bd5635a1 RP |
350 | { |
351 | va_list args; | |
45993f61 | 352 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
353 | va_start (args, string); |
354 | #else | |
bd5635a1 | 355 | char *string; |
bd5635a1 RP |
356 | va_start (args); |
357 | string = va_arg (args, char *); | |
85c613aa | 358 | #endif |
199b2450 TL |
359 | fprintf_unfiltered (gdb_stderr, "\ngdb: "); |
360 | vfprintf_unfiltered (gdb_stderr, string, args); | |
361 | fprintf_unfiltered (gdb_stderr, "\n"); | |
bd5635a1 RP |
362 | va_end (args); |
363 | exit (1); | |
364 | } | |
365 | ||
366 | /* Print an error message and exit, dumping core. | |
367 | The arguments are printed a la printf (). */ | |
7919c3ed | 368 | |
bd5635a1 | 369 | /* VARARGS */ |
7919c3ed | 370 | static void |
45993f61 | 371 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
372 | fatal_dump_core (char *string, ...) |
373 | #else | |
bd5635a1 RP |
374 | fatal_dump_core (va_alist) |
375 | va_dcl | |
85c613aa | 376 | #endif |
bd5635a1 RP |
377 | { |
378 | va_list args; | |
45993f61 | 379 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
380 | va_start (args, string); |
381 | #else | |
bd5635a1 RP |
382 | char *string; |
383 | ||
384 | va_start (args); | |
385 | string = va_arg (args, char *); | |
85c613aa | 386 | #endif |
bd5635a1 RP |
387 | /* "internal error" is always correct, since GDB should never dump |
388 | core, no matter what the input. */ | |
199b2450 TL |
389 | fprintf_unfiltered (gdb_stderr, "\ngdb internal error: "); |
390 | vfprintf_unfiltered (gdb_stderr, string, args); | |
391 | fprintf_unfiltered (gdb_stderr, "\n"); | |
bd5635a1 RP |
392 | va_end (args); |
393 | ||
394 | signal (SIGQUIT, SIG_DFL); | |
395 | kill (getpid (), SIGQUIT); | |
396 | /* We should never get here, but just in case... */ | |
397 | exit (1); | |
398 | } | |
7919c3ed | 399 | |
4ace50a5 FF |
400 | /* The strerror() function can return NULL for errno values that are |
401 | out of range. Provide a "safe" version that always returns a | |
402 | printable string. */ | |
403 | ||
404 | char * | |
405 | safe_strerror (errnum) | |
406 | int errnum; | |
407 | { | |
408 | char *msg; | |
409 | static char buf[32]; | |
410 | ||
411 | if ((msg = strerror (errnum)) == NULL) | |
412 | { | |
413 | sprintf (buf, "(undocumented errno %d)", errnum); | |
414 | msg = buf; | |
415 | } | |
416 | return (msg); | |
417 | } | |
418 | ||
419 | /* The strsignal() function can return NULL for signal values that are | |
420 | out of range. Provide a "safe" version that always returns a | |
421 | printable string. */ | |
422 | ||
423 | char * | |
424 | safe_strsignal (signo) | |
425 | int signo; | |
426 | { | |
427 | char *msg; | |
428 | static char buf[32]; | |
429 | ||
430 | if ((msg = strsignal (signo)) == NULL) | |
431 | { | |
432 | sprintf (buf, "(undocumented signal %d)", signo); | |
433 | msg = buf; | |
434 | } | |
435 | return (msg); | |
436 | } | |
437 | ||
438 | ||
bd5635a1 RP |
439 | /* Print the system error message for errno, and also mention STRING |
440 | as the file name for which the error was encountered. | |
441 | Then return to command level. */ | |
442 | ||
443 | void | |
444 | perror_with_name (string) | |
445 | char *string; | |
446 | { | |
bd5635a1 RP |
447 | char *err; |
448 | char *combined; | |
449 | ||
4ace50a5 | 450 | err = safe_strerror (errno); |
bd5635a1 RP |
451 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); |
452 | strcpy (combined, string); | |
453 | strcat (combined, ": "); | |
454 | strcat (combined, err); | |
455 | ||
456 | /* I understand setting these is a matter of taste. Still, some people | |
457 | may clear errno but not know about bfd_error. Doing this here is not | |
458 | unreasonable. */ | |
8eec3310 | 459 | bfd_set_error (bfd_error_no_error); |
bd5635a1 RP |
460 | errno = 0; |
461 | ||
462 | error ("%s.", combined); | |
463 | } | |
464 | ||
465 | /* Print the system error message for ERRCODE, and also mention STRING | |
466 | as the file name for which the error was encountered. */ | |
467 | ||
468 | void | |
469 | print_sys_errmsg (string, errcode) | |
470 | char *string; | |
471 | int errcode; | |
472 | { | |
bd5635a1 RP |
473 | char *err; |
474 | char *combined; | |
475 | ||
4ace50a5 | 476 | err = safe_strerror (errcode); |
bd5635a1 RP |
477 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); |
478 | strcpy (combined, string); | |
479 | strcat (combined, ": "); | |
480 | strcat (combined, err); | |
481 | ||
44a09a68 JK |
482 | /* We want anything which was printed on stdout to come out first, before |
483 | this message. */ | |
484 | gdb_flush (gdb_stdout); | |
199b2450 | 485 | fprintf_unfiltered (gdb_stderr, "%s.\n", combined); |
bd5635a1 RP |
486 | } |
487 | ||
488 | /* Control C eventually causes this to be called, at a convenient time. */ | |
489 | ||
490 | void | |
491 | quit () | |
492 | { | |
199b2450 | 493 | serial_t gdb_stdout_serial = serial_fdopen (1); |
159dd2aa | 494 | |
bd5635a1 | 495 | target_terminal_ours (); |
159dd2aa | 496 | |
44a09a68 JK |
497 | /* We want all output to appear now, before we print "Quit". We |
498 | have 3 levels of buffering we have to flush (it's possible that | |
499 | some of these should be changed to flush the lower-level ones | |
500 | too): */ | |
501 | ||
502 | /* 1. The _filtered buffer. */ | |
503 | wrap_here ((char *)0); | |
504 | ||
505 | /* 2. The stdio buffer. */ | |
506 | gdb_flush (gdb_stdout); | |
507 | gdb_flush (gdb_stderr); | |
159dd2aa | 508 | |
44a09a68 JK |
509 | /* 3. The system-level buffer. */ |
510 | SERIAL_FLUSH_OUTPUT (gdb_stdout_serial); | |
199b2450 | 511 | SERIAL_UN_FDOPEN (gdb_stdout_serial); |
159dd2aa | 512 | |
1c95d7ab | 513 | annotate_error_begin (); |
a0cf4681 | 514 | |
159dd2aa | 515 | /* Don't use *_filtered; we don't want to prompt the user to continue. */ |
49073be0 SS |
516 | if (quit_pre_print) |
517 | fprintf_unfiltered (gdb_stderr, quit_pre_print); | |
159dd2aa JK |
518 | |
519 | if (job_control | |
520 | /* If there is no terminal switching for this target, then we can't | |
521 | possibly get screwed by the lack of job control. */ | |
cad1498f | 522 | || current_target.to_terminal_ours == NULL) |
199b2450 | 523 | fprintf_unfiltered (gdb_stderr, "Quit\n"); |
159dd2aa | 524 | else |
199b2450 | 525 | fprintf_unfiltered (gdb_stderr, |
159dd2aa JK |
526 | "Quit (expect signal SIGINT when the program is resumed)\n"); |
527 | return_to_top_level (RETURN_QUIT); | |
bd5635a1 RP |
528 | } |
529 | ||
bd5d07d9 | 530 | |
dedcc91d | 531 | #if defined(__GO32__)||defined(WINGDB) |
bd5d07d9 FF |
532 | |
533 | /* In the absence of signals, poll keyboard for a quit. | |
534 | Called from #define QUIT pollquit() in xm-go32.h. */ | |
535 | ||
536 | void | |
537 | pollquit() | |
538 | { | |
539 | if (kbhit ()) | |
540 | { | |
541 | int k = getkey (); | |
44a09a68 | 542 | if (k == 1) { |
bd5d07d9 | 543 | quit_flag = 1; |
44a09a68 JK |
544 | quit(); |
545 | } | |
546 | else if (k == 2) { | |
bd5d07d9 | 547 | immediate_quit = 1; |
44a09a68 JK |
548 | quit (); |
549 | } | |
550 | else | |
551 | { | |
552 | /* We just ignore it */ | |
553 | fprintf_unfiltered (gdb_stderr, "CTRL-A to quit, CTRL-B to quit harder\n"); | |
554 | } | |
bd5d07d9 FF |
555 | } |
556 | } | |
557 | ||
bd5d07d9 | 558 | |
44a09a68 | 559 | #endif |
dedcc91d | 560 | #if defined(__GO32__)||defined(WINGDB) |
44a09a68 JK |
561 | void notice_quit() |
562 | { | |
563 | if (kbhit ()) | |
564 | { | |
565 | int k = getkey (); | |
566 | if (k == 1) { | |
567 | quit_flag = 1; | |
568 | } | |
569 | else if (k == 2) | |
570 | { | |
571 | immediate_quit = 1; | |
572 | } | |
573 | else | |
574 | { | |
575 | fprintf_unfiltered (gdb_stderr, "CTRL-A to quit, CTRL-B to quit harder\n"); | |
576 | } | |
577 | } | |
578 | } | |
579 | #else | |
580 | void notice_quit() | |
581 | { | |
582 | /* Done by signals */ | |
583 | } | |
584 | #endif | |
bd5635a1 RP |
585 | /* Control C comes here */ |
586 | ||
587 | void | |
088c3a0b JG |
588 | request_quit (signo) |
589 | int signo; | |
bd5635a1 RP |
590 | { |
591 | quit_flag = 1; | |
44a09a68 JK |
592 | /* Restore the signal handler. Harmless with BSD-style signals, needed |
593 | for System V-style signals. So just always do it, rather than worrying | |
594 | about USG defines and stuff like that. */ | |
088c3a0b | 595 | signal (signo, request_quit); |
bd5635a1 | 596 | |
cd10c7e3 | 597 | /* start-sanitize-gm */ |
a243a22f | 598 | #ifdef GENERAL_MAGIC |
cd10c7e3 | 599 | target_kill (); |
a243a22f | 600 | #endif /* GENERAL_MAGIC */ |
cd10c7e3 SG |
601 | /* end-sanitize-gm */ |
602 | ||
cad1498f SG |
603 | #ifdef REQUEST_QUIT |
604 | REQUEST_QUIT; | |
605 | #else | |
dedcc91d | 606 | if (immediate_quit) |
bd5635a1 | 607 | quit (); |
cad1498f | 608 | #endif |
bd5635a1 | 609 | } |
3624c875 FF |
610 | |
611 | \f | |
612 | /* Memory management stuff (malloc friends). */ | |
613 | ||
614 | #if defined (NO_MMALLOC) | |
615 | ||
0d172a2e JK |
616 | /* Make a substitute size_t for non-ANSI compilers. */ |
617 | ||
618 | #ifdef _AIX | |
619 | #include <stddef.h> | |
620 | #else /* Not AIX */ | |
621 | #ifndef __STDC__ | |
622 | #ifndef size_t | |
623 | #define size_t unsigned int | |
624 | #endif | |
625 | #endif | |
626 | #endif /* Not AIX */ | |
627 | ||
3624c875 FF |
628 | PTR |
629 | mmalloc (md, size) | |
630 | PTR md; | |
0d172a2e | 631 | size_t size; |
3624c875 | 632 | { |
0d172a2e | 633 | return malloc (size); |
3624c875 FF |
634 | } |
635 | ||
636 | PTR | |
637 | mrealloc (md, ptr, size) | |
638 | PTR md; | |
639 | PTR ptr; | |
0d172a2e | 640 | size_t size; |
3624c875 | 641 | { |
4ace50a5 FF |
642 | if (ptr == 0) /* Guard against old realloc's */ |
643 | return malloc (size); | |
644 | else | |
645 | return realloc (ptr, size); | |
3624c875 FF |
646 | } |
647 | ||
648 | void | |
649 | mfree (md, ptr) | |
650 | PTR md; | |
651 | PTR ptr; | |
652 | { | |
653 | free (ptr); | |
654 | } | |
655 | ||
656 | #endif /* NO_MMALLOC */ | |
657 | ||
54109914 | 658 | #if defined (NO_MMALLOC) || defined (NO_MMCHECK) |
3624c875 FF |
659 | |
660 | void | |
661 | init_malloc (md) | |
662 | PTR md; | |
663 | { | |
664 | } | |
665 | ||
54109914 | 666 | #else /* Have mmalloc and want corruption checking */ |
3624c875 FF |
667 | |
668 | static void | |
669 | malloc_botch () | |
670 | { | |
671 | fatal_dump_core ("Memory corruption"); | |
672 | } | |
673 | ||
674 | /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified | |
675 | by MD, to detect memory corruption. Note that MD may be NULL to specify | |
676 | the default heap that grows via sbrk. | |
677 | ||
54109914 | 678 | Note that for freshly created regions, we must call mmcheckf prior to any |
3624c875 FF |
679 | mallocs in the region. Otherwise, any region which was allocated prior to |
680 | installing the checking hooks, which is later reallocated or freed, will | |
681 | fail the checks! The mmcheck function only allows initial hooks to be | |
682 | installed before the first mmalloc. However, anytime after we have called | |
683 | mmcheck the first time to install the checking hooks, we can call it again | |
684 | to update the function pointer to the memory corruption handler. | |
685 | ||
686 | Returns zero on failure, non-zero on success. */ | |
687 | ||
54109914 FF |
688 | #ifndef MMCHECK_FORCE |
689 | #define MMCHECK_FORCE 0 | |
690 | #endif | |
691 | ||
3624c875 FF |
692 | void |
693 | init_malloc (md) | |
694 | PTR md; | |
695 | { | |
54109914 | 696 | if (!mmcheckf (md, malloc_botch, MMCHECK_FORCE)) |
3624c875 | 697 | { |
54109914 FF |
698 | /* Don't use warning(), which relies on current_target being set |
699 | to something other than dummy_target, until after | |
700 | initialize_all_files(). */ | |
701 | ||
702 | fprintf_unfiltered | |
703 | (gdb_stderr, "warning: failed to install memory consistency checks; "); | |
704 | fprintf_unfiltered | |
705 | (gdb_stderr, "configuration should define NO_MMCHECK or MMCHECK_FORCE\n"); | |
3624c875 FF |
706 | } |
707 | ||
4ed3a9ea | 708 | mmtrace (); |
3624c875 FF |
709 | } |
710 | ||
711 | #endif /* Have mmalloc and want corruption checking */ | |
712 | ||
713 | /* Called when a memory allocation fails, with the number of bytes of | |
714 | memory requested in SIZE. */ | |
715 | ||
716 | NORETURN void | |
717 | nomem (size) | |
718 | long size; | |
719 | { | |
720 | if (size > 0) | |
721 | { | |
722 | fatal ("virtual memory exhausted: can't allocate %ld bytes.", size); | |
723 | } | |
724 | else | |
725 | { | |
726 | fatal ("virtual memory exhausted."); | |
727 | } | |
728 | } | |
729 | ||
730 | /* Like mmalloc but get error if no storage available, and protect against | |
731 | the caller wanting to allocate zero bytes. Whether to return NULL for | |
732 | a zero byte request, or translate the request into a request for one | |
733 | byte of zero'd storage, is a religious issue. */ | |
734 | ||
735 | PTR | |
736 | xmmalloc (md, size) | |
737 | PTR md; | |
738 | long size; | |
739 | { | |
740 | register PTR val; | |
741 | ||
742 | if (size == 0) | |
743 | { | |
744 | val = NULL; | |
745 | } | |
746 | else if ((val = mmalloc (md, size)) == NULL) | |
747 | { | |
748 | nomem (size); | |
749 | } | |
750 | return (val); | |
751 | } | |
752 | ||
753 | /* Like mrealloc but get error if no storage available. */ | |
754 | ||
755 | PTR | |
756 | xmrealloc (md, ptr, size) | |
757 | PTR md; | |
758 | PTR ptr; | |
759 | long size; | |
760 | { | |
761 | register PTR val; | |
762 | ||
763 | if (ptr != NULL) | |
764 | { | |
765 | val = mrealloc (md, ptr, size); | |
766 | } | |
767 | else | |
768 | { | |
769 | val = mmalloc (md, size); | |
770 | } | |
771 | if (val == NULL) | |
772 | { | |
773 | nomem (size); | |
774 | } | |
775 | return (val); | |
776 | } | |
777 | ||
778 | /* Like malloc but get error if no storage available, and protect against | |
779 | the caller wanting to allocate zero bytes. */ | |
780 | ||
781 | PTR | |
782 | xmalloc (size) | |
783 | long size; | |
784 | { | |
199b2450 | 785 | return (xmmalloc ((PTR) NULL, size)); |
3624c875 FF |
786 | } |
787 | ||
788 | /* Like mrealloc but get error if no storage available. */ | |
789 | ||
790 | PTR | |
791 | xrealloc (ptr, size) | |
792 | PTR ptr; | |
793 | long size; | |
794 | { | |
199b2450 | 795 | return (xmrealloc ((PTR) NULL, ptr, size)); |
3624c875 FF |
796 | } |
797 | ||
bd5635a1 RP |
798 | \f |
799 | /* My replacement for the read system call. | |
800 | Used like `read' but keeps going if `read' returns too soon. */ | |
801 | ||
802 | int | |
803 | myread (desc, addr, len) | |
804 | int desc; | |
805 | char *addr; | |
806 | int len; | |
807 | { | |
808 | register int val; | |
809 | int orglen = len; | |
810 | ||
811 | while (len > 0) | |
812 | { | |
813 | val = read (desc, addr, len); | |
814 | if (val < 0) | |
815 | return val; | |
816 | if (val == 0) | |
817 | return orglen - len; | |
818 | len -= val; | |
819 | addr += val; | |
820 | } | |
821 | return orglen; | |
822 | } | |
823 | \f | |
824 | /* Make a copy of the string at PTR with SIZE characters | |
825 | (and add a null character at the end in the copy). | |
826 | Uses malloc to get the space. Returns the address of the copy. */ | |
827 | ||
828 | char * | |
829 | savestring (ptr, size) | |
088c3a0b | 830 | const char *ptr; |
bd5635a1 RP |
831 | int size; |
832 | { | |
833 | register char *p = (char *) xmalloc (size + 1); | |
4ed3a9ea | 834 | memcpy (p, ptr, size); |
bd5635a1 RP |
835 | p[size] = 0; |
836 | return p; | |
837 | } | |
838 | ||
3624c875 FF |
839 | char * |
840 | msavestring (md, ptr, size) | |
199b2450 | 841 | PTR md; |
3624c875 FF |
842 | const char *ptr; |
843 | int size; | |
844 | { | |
845 | register char *p = (char *) xmmalloc (md, size + 1); | |
4ed3a9ea | 846 | memcpy (p, ptr, size); |
3624c875 FF |
847 | p[size] = 0; |
848 | return p; | |
849 | } | |
850 | ||
8aa13b87 JK |
851 | /* The "const" is so it compiles under DGUX (which prototypes strsave |
852 | in <string.h>. FIXME: This should be named "xstrsave", shouldn't it? | |
853 | Doesn't real strsave return NULL if out of memory? */ | |
bd5635a1 RP |
854 | char * |
855 | strsave (ptr) | |
8aa13b87 | 856 | const char *ptr; |
bd5635a1 RP |
857 | { |
858 | return savestring (ptr, strlen (ptr)); | |
859 | } | |
860 | ||
3624c875 FF |
861 | char * |
862 | mstrsave (md, ptr) | |
199b2450 | 863 | PTR md; |
3624c875 FF |
864 | const char *ptr; |
865 | { | |
866 | return (msavestring (md, ptr, strlen (ptr))); | |
867 | } | |
868 | ||
bd5635a1 RP |
869 | void |
870 | print_spaces (n, file) | |
871 | register int n; | |
872 | register FILE *file; | |
873 | { | |
874 | while (n-- > 0) | |
875 | fputc (' ', file); | |
876 | } | |
877 | ||
8eec3310 SC |
878 | /* Print a host address. */ |
879 | ||
880 | void | |
881 | gdb_print_address (addr, stream) | |
882 | PTR addr; | |
883 | GDB_FILE *stream; | |
884 | { | |
885 | ||
886 | /* We could use the %p conversion specifier to fprintf if we had any | |
887 | way of knowing whether this host supports it. But the following | |
888 | should work on the Alpha and on 32 bit machines. */ | |
889 | ||
890 | fprintf_filtered (stream, "0x%lx", (unsigned long)addr); | |
891 | } | |
892 | ||
bd5635a1 RP |
893 | /* Ask user a y-or-n question and return 1 iff answer is yes. |
894 | Takes three args which are given to printf to print the question. | |
895 | The first, a control string, should end in "? ". | |
896 | It should not say how to answer, because we do that. */ | |
897 | ||
898 | /* VARARGS */ | |
899 | int | |
45993f61 | 900 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
901 | query (char *ctlstr, ...) |
902 | #else | |
bd5635a1 RP |
903 | query (va_alist) |
904 | va_dcl | |
85c613aa | 905 | #endif |
bd5635a1 RP |
906 | { |
907 | va_list args; | |
bd5635a1 RP |
908 | register int answer; |
909 | register int ans2; | |
d8742f46 | 910 | int retval; |
bd5635a1 | 911 | |
45993f61 | 912 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
913 | va_start (args, ctlstr); |
914 | #else | |
915 | char *ctlstr; | |
916 | va_start (args); | |
917 | ctlstr = va_arg (args, char *); | |
918 | #endif | |
919 | ||
0d172a2e JK |
920 | if (query_hook) |
921 | { | |
85c613aa | 922 | return query_hook (ctlstr, args); |
0d172a2e JK |
923 | } |
924 | ||
bd5635a1 RP |
925 | /* Automatically answer "yes" if input is not from a terminal. */ |
926 | if (!input_from_terminal_p ()) | |
927 | return 1; | |
cad1498f | 928 | #ifdef MPW |
49073be0 | 929 | /* FIXME Automatically answer "yes" if called from MacGDB. */ |
cad1498f SG |
930 | if (mac_app) |
931 | return 1; | |
932 | #endif /* MPW */ | |
bd5635a1 RP |
933 | |
934 | while (1) | |
935 | { | |
546014f7 | 936 | wrap_here (""); /* Flush any buffered output */ |
199b2450 | 937 | gdb_flush (gdb_stdout); |
d8742f46 JK |
938 | |
939 | if (annotation_level > 1) | |
940 | printf_filtered ("\n\032\032pre-query\n"); | |
941 | ||
199b2450 | 942 | vfprintf_filtered (gdb_stdout, ctlstr, args); |
bcf2e6ab | 943 | printf_filtered ("(y or n) "); |
d8742f46 JK |
944 | |
945 | if (annotation_level > 1) | |
946 | printf_filtered ("\n\032\032query\n"); | |
947 | ||
cad1498f SG |
948 | #ifdef MPW |
949 | /* If not in MacGDB, move to a new line so the entered line doesn't | |
950 | have a prompt on the front of it. */ | |
951 | if (!mac_app) | |
952 | fputs_unfiltered ("\n", gdb_stdout); | |
953 | #endif /* MPW */ | |
49073be0 | 954 | |
199b2450 | 955 | gdb_flush (gdb_stdout); |
b36e3a9b SG |
956 | answer = fgetc (stdin); |
957 | clearerr (stdin); /* in case of C-d */ | |
958 | if (answer == EOF) /* C-d */ | |
d8742f46 JK |
959 | { |
960 | retval = 1; | |
961 | break; | |
962 | } | |
b36e3a9b SG |
963 | if (answer != '\n') /* Eat rest of input line, to EOF or newline */ |
964 | do | |
965 | { | |
966 | ans2 = fgetc (stdin); | |
967 | clearerr (stdin); | |
968 | } | |
969 | while (ans2 != EOF && ans2 != '\n'); | |
bd5635a1 RP |
970 | if (answer >= 'a') |
971 | answer -= 040; | |
972 | if (answer == 'Y') | |
d8742f46 JK |
973 | { |
974 | retval = 1; | |
975 | break; | |
976 | } | |
bd5635a1 | 977 | if (answer == 'N') |
d8742f46 JK |
978 | { |
979 | retval = 0; | |
980 | break; | |
981 | } | |
bcf2e6ab | 982 | printf_filtered ("Please answer y or n.\n"); |
bd5635a1 | 983 | } |
d8742f46 JK |
984 | |
985 | if (annotation_level > 1) | |
986 | printf_filtered ("\n\032\032post-query\n"); | |
987 | return retval; | |
bd5635a1 | 988 | } |
7919c3ed | 989 | |
bd5635a1 RP |
990 | \f |
991 | /* Parse a C escape sequence. STRING_PTR points to a variable | |
992 | containing a pointer to the string to parse. That pointer | |
993 | should point to the character after the \. That pointer | |
994 | is updated past the characters we use. The value of the | |
995 | escape sequence is returned. | |
996 | ||
997 | A negative value means the sequence \ newline was seen, | |
998 | which is supposed to be equivalent to nothing at all. | |
999 | ||
1000 | If \ is followed by a null character, we return a negative | |
1001 | value and leave the string pointer pointing at the null character. | |
1002 | ||
1003 | If \ is followed by 000, we return 0 and leave the string pointer | |
1004 | after the zeros. A value of 0 does not mean end of string. */ | |
1005 | ||
1006 | int | |
1007 | parse_escape (string_ptr) | |
1008 | char **string_ptr; | |
1009 | { | |
1010 | register int c = *(*string_ptr)++; | |
1011 | switch (c) | |
1012 | { | |
1013 | case 'a': | |
2bc2e684 | 1014 | return 007; /* Bell (alert) char */ |
bd5635a1 RP |
1015 | case 'b': |
1016 | return '\b'; | |
2bc2e684 | 1017 | case 'e': /* Escape character */ |
bd5635a1 RP |
1018 | return 033; |
1019 | case 'f': | |
1020 | return '\f'; | |
1021 | case 'n': | |
1022 | return '\n'; | |
1023 | case 'r': | |
1024 | return '\r'; | |
1025 | case 't': | |
1026 | return '\t'; | |
1027 | case 'v': | |
1028 | return '\v'; | |
1029 | case '\n': | |
1030 | return -2; | |
1031 | case 0: | |
1032 | (*string_ptr)--; | |
1033 | return 0; | |
1034 | case '^': | |
1035 | c = *(*string_ptr)++; | |
1036 | if (c == '\\') | |
1037 | c = parse_escape (string_ptr); | |
1038 | if (c == '?') | |
1039 | return 0177; | |
1040 | return (c & 0200) | (c & 037); | |
1041 | ||
1042 | case '0': | |
1043 | case '1': | |
1044 | case '2': | |
1045 | case '3': | |
1046 | case '4': | |
1047 | case '5': | |
1048 | case '6': | |
1049 | case '7': | |
1050 | { | |
1051 | register int i = c - '0'; | |
1052 | register int count = 0; | |
1053 | while (++count < 3) | |
1054 | { | |
1055 | if ((c = *(*string_ptr)++) >= '0' && c <= '7') | |
1056 | { | |
1057 | i *= 8; | |
1058 | i += c - '0'; | |
1059 | } | |
1060 | else | |
1061 | { | |
1062 | (*string_ptr)--; | |
1063 | break; | |
1064 | } | |
1065 | } | |
1066 | return i; | |
1067 | } | |
1068 | default: | |
1069 | return c; | |
1070 | } | |
1071 | } | |
1072 | \f | |
51b80b00 FF |
1073 | /* Print the character C on STREAM as part of the contents of a literal |
1074 | string whose delimiter is QUOTER. Note that this routine should only | |
1075 | be call for printing things which are independent of the language | |
1076 | of the program being debugged. */ | |
bd5635a1 RP |
1077 | |
1078 | void | |
51b80b00 | 1079 | gdb_printchar (c, stream, quoter) |
088c3a0b | 1080 | register int c; |
bd5635a1 RP |
1081 | FILE *stream; |
1082 | int quoter; | |
1083 | { | |
bd5635a1 | 1084 | |
7e7e2d40 JG |
1085 | c &= 0xFF; /* Avoid sign bit follies */ |
1086 | ||
fcdb113e JG |
1087 | if ( c < 0x20 || /* Low control chars */ |
1088 | (c >= 0x7F && c < 0xA0) || /* DEL, High controls */ | |
1089 | (sevenbit_strings && c >= 0x80)) { /* high order bit set */ | |
bd5635a1 RP |
1090 | switch (c) |
1091 | { | |
1092 | case '\n': | |
1093 | fputs_filtered ("\\n", stream); | |
1094 | break; | |
1095 | case '\b': | |
1096 | fputs_filtered ("\\b", stream); | |
1097 | break; | |
1098 | case '\t': | |
1099 | fputs_filtered ("\\t", stream); | |
1100 | break; | |
1101 | case '\f': | |
1102 | fputs_filtered ("\\f", stream); | |
1103 | break; | |
1104 | case '\r': | |
1105 | fputs_filtered ("\\r", stream); | |
1106 | break; | |
1107 | case '\033': | |
1108 | fputs_filtered ("\\e", stream); | |
1109 | break; | |
1110 | case '\007': | |
1111 | fputs_filtered ("\\a", stream); | |
1112 | break; | |
1113 | default: | |
1114 | fprintf_filtered (stream, "\\%.3o", (unsigned int) c); | |
1115 | break; | |
1116 | } | |
2bc2e684 FF |
1117 | } else { |
1118 | if (c == '\\' || c == quoter) | |
1119 | fputs_filtered ("\\", stream); | |
1120 | fprintf_filtered (stream, "%c", c); | |
1121 | } | |
bd5635a1 RP |
1122 | } |
1123 | \f | |
1124 | /* Number of lines per page or UINT_MAX if paging is disabled. */ | |
1125 | static unsigned int lines_per_page; | |
1126 | /* Number of chars per line or UNIT_MAX is line folding is disabled. */ | |
1127 | static unsigned int chars_per_line; | |
1128 | /* Current count of lines printed on this page, chars on this line. */ | |
1129 | static unsigned int lines_printed, chars_printed; | |
1130 | ||
1131 | /* Buffer and start column of buffered text, for doing smarter word- | |
1132 | wrapping. When someone calls wrap_here(), we start buffering output | |
1133 | that comes through fputs_filtered(). If we see a newline, we just | |
1134 | spit it out and forget about the wrap_here(). If we see another | |
1135 | wrap_here(), we spit it out and remember the newer one. If we see | |
1136 | the end of the line, we spit out a newline, the indent, and then | |
159dd2aa JK |
1137 | the buffered output. */ |
1138 | ||
1139 | /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which | |
1140 | are waiting to be output (they have already been counted in chars_printed). | |
1141 | When wrap_buffer[0] is null, the buffer is empty. */ | |
1142 | static char *wrap_buffer; | |
bd5635a1 | 1143 | |
159dd2aa JK |
1144 | /* Pointer in wrap_buffer to the next character to fill. */ |
1145 | static char *wrap_pointer; | |
bd5635a1 | 1146 | |
159dd2aa JK |
1147 | /* String to indent by if the wrap occurs. Must not be NULL if wrap_column |
1148 | is non-zero. */ | |
1149 | static char *wrap_indent; | |
1150 | ||
1151 | /* Column number on the screen where wrap_buffer begins, or 0 if wrapping | |
1152 | is not in effect. */ | |
bd5635a1 RP |
1153 | static int wrap_column; |
1154 | ||
e1ce8aa5 | 1155 | /* ARGSUSED */ |
bd5635a1 RP |
1156 | static void |
1157 | set_width_command (args, from_tty, c) | |
1158 | char *args; | |
1159 | int from_tty; | |
1160 | struct cmd_list_element *c; | |
1161 | { | |
1162 | if (!wrap_buffer) | |
1163 | { | |
1164 | wrap_buffer = (char *) xmalloc (chars_per_line + 2); | |
1165 | wrap_buffer[0] = '\0'; | |
1166 | } | |
1167 | else | |
1168 | wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2); | |
1169 | wrap_pointer = wrap_buffer; /* Start it at the beginning */ | |
1170 | } | |
1171 | ||
d974236f JG |
1172 | /* Wait, so the user can read what's on the screen. Prompt the user |
1173 | to continue by pressing RETURN. */ | |
1174 | ||
bd5635a1 RP |
1175 | static void |
1176 | prompt_for_continue () | |
1177 | { | |
351b221d | 1178 | char *ignore; |
d8742f46 JK |
1179 | char cont_prompt[120]; |
1180 | ||
4dd876ac JK |
1181 | if (annotation_level > 1) |
1182 | printf_unfiltered ("\n\032\032pre-prompt-for-continue\n"); | |
1183 | ||
d8742f46 JK |
1184 | strcpy (cont_prompt, |
1185 | "---Type <return> to continue, or q <return> to quit---"); | |
1186 | if (annotation_level > 1) | |
1187 | strcat (cont_prompt, "\n\032\032prompt-for-continue\n"); | |
351b221d | 1188 | |
d974236f JG |
1189 | /* We must do this *before* we call gdb_readline, else it will eventually |
1190 | call us -- thinking that we're trying to print beyond the end of the | |
1191 | screen. */ | |
1192 | reinitialize_more_filter (); | |
1193 | ||
bd5635a1 | 1194 | immediate_quit++; |
159dd2aa JK |
1195 | /* On a real operating system, the user can quit with SIGINT. |
1196 | But not on GO32. | |
1197 | ||
1198 | 'q' is provided on all systems so users don't have to change habits | |
1199 | from system to system, and because telling them what to do in | |
1200 | the prompt is more user-friendly than expecting them to think of | |
1201 | SIGINT. */ | |
a94100d1 JK |
1202 | /* Call readline, not gdb_readline, because GO32 readline handles control-C |
1203 | whereas control-C to gdb_readline will cause the user to get dumped | |
1204 | out to DOS. */ | |
d8742f46 | 1205 | ignore = readline (cont_prompt); |
4dd876ac JK |
1206 | |
1207 | if (annotation_level > 1) | |
1208 | printf_unfiltered ("\n\032\032post-prompt-for-continue\n"); | |
1209 | ||
351b221d | 1210 | if (ignore) |
159dd2aa JK |
1211 | { |
1212 | char *p = ignore; | |
1213 | while (*p == ' ' || *p == '\t') | |
1214 | ++p; | |
1215 | if (p[0] == 'q') | |
1216 | request_quit (SIGINT); | |
1217 | free (ignore); | |
1218 | } | |
bd5635a1 | 1219 | immediate_quit--; |
d974236f JG |
1220 | |
1221 | /* Now we have to do this again, so that GDB will know that it doesn't | |
1222 | need to save the ---Type <return>--- line at the top of the screen. */ | |
1223 | reinitialize_more_filter (); | |
1224 | ||
351b221d | 1225 | dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ |
bd5635a1 RP |
1226 | } |
1227 | ||
1228 | /* Reinitialize filter; ie. tell it to reset to original values. */ | |
1229 | ||
1230 | void | |
1231 | reinitialize_more_filter () | |
1232 | { | |
1233 | lines_printed = 0; | |
1234 | chars_printed = 0; | |
1235 | } | |
1236 | ||
1237 | /* Indicate that if the next sequence of characters overflows the line, | |
1238 | a newline should be inserted here rather than when it hits the end. | |
159dd2aa | 1239 | If INDENT is non-null, it is a string to be printed to indent the |
bd5635a1 RP |
1240 | wrapped part on the next line. INDENT must remain accessible until |
1241 | the next call to wrap_here() or until a newline is printed through | |
1242 | fputs_filtered(). | |
1243 | ||
1244 | If the line is already overfull, we immediately print a newline and | |
1245 | the indentation, and disable further wrapping. | |
1246 | ||
2bc2e684 FF |
1247 | If we don't know the width of lines, but we know the page height, |
1248 | we must not wrap words, but should still keep track of newlines | |
1249 | that were explicitly printed. | |
1250 | ||
159dd2aa JK |
1251 | INDENT should not contain tabs, as that will mess up the char count |
1252 | on the next line. FIXME. | |
1253 | ||
1254 | This routine is guaranteed to force out any output which has been | |
1255 | squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be | |
1256 | used to force out output from the wrap_buffer. */ | |
bd5635a1 RP |
1257 | |
1258 | void | |
1259 | wrap_here(indent) | |
159dd2aa | 1260 | char *indent; |
bd5635a1 | 1261 | { |
cad1498f SG |
1262 | /* This should have been allocated, but be paranoid anyway. */ |
1263 | if (!wrap_buffer) | |
1264 | abort (); | |
1265 | ||
bd5635a1 RP |
1266 | if (wrap_buffer[0]) |
1267 | { | |
1268 | *wrap_pointer = '\0'; | |
d8fc8773 | 1269 | fputs_unfiltered (wrap_buffer, gdb_stdout); |
bd5635a1 RP |
1270 | } |
1271 | wrap_pointer = wrap_buffer; | |
1272 | wrap_buffer[0] = '\0'; | |
2bc2e684 FF |
1273 | if (chars_per_line == UINT_MAX) /* No line overflow checking */ |
1274 | { | |
1275 | wrap_column = 0; | |
1276 | } | |
1277 | else if (chars_printed >= chars_per_line) | |
bd5635a1 RP |
1278 | { |
1279 | puts_filtered ("\n"); | |
159dd2aa JK |
1280 | if (indent != NULL) |
1281 | puts_filtered (indent); | |
bd5635a1 RP |
1282 | wrap_column = 0; |
1283 | } | |
1284 | else | |
1285 | { | |
1286 | wrap_column = chars_printed; | |
159dd2aa JK |
1287 | if (indent == NULL) |
1288 | wrap_indent = ""; | |
1289 | else | |
1290 | wrap_indent = indent; | |
bd5635a1 RP |
1291 | } |
1292 | } | |
1293 | ||
51b80b00 FF |
1294 | /* Ensure that whatever gets printed next, using the filtered output |
1295 | commands, starts at the beginning of the line. I.E. if there is | |
1296 | any pending output for the current line, flush it and start a new | |
1297 | line. Otherwise do nothing. */ | |
1298 | ||
1299 | void | |
1300 | begin_line () | |
1301 | { | |
1302 | if (chars_printed > 0) | |
1303 | { | |
1304 | puts_filtered ("\n"); | |
1305 | } | |
1306 | } | |
1307 | ||
199b2450 TL |
1308 | |
1309 | GDB_FILE * | |
1310 | gdb_fopen (name, mode) | |
1311 | char * name; | |
1312 | char * mode; | |
1313 | { | |
1314 | return fopen (name, mode); | |
1315 | } | |
1316 | ||
bd5635a1 | 1317 | void |
199b2450 TL |
1318 | gdb_flush (stream) |
1319 | FILE *stream; | |
1320 | { | |
0d172a2e JK |
1321 | if (flush_hook) |
1322 | { | |
1323 | flush_hook (stream); | |
1324 | return; | |
1325 | } | |
1326 | ||
199b2450 TL |
1327 | fflush (stream); |
1328 | } | |
1329 | ||
44a09a68 JK |
1330 | /* Like fputs but if FILTER is true, pause after every screenful. |
1331 | ||
1332 | Regardless of FILTER can wrap at points other than the final | |
1333 | character of a line. | |
1334 | ||
1335 | Unlike fputs, fputs_maybe_filtered does not return a value. | |
1336 | It is OK for LINEBUFFER to be NULL, in which case just don't print | |
1337 | anything. | |
1338 | ||
1339 | Note that a longjmp to top level may occur in this routine (only if | |
1340 | FILTER is true) (since prompt_for_continue may do so) so this | |
1341 | routine should not be called when cleanups are not in place. */ | |
1342 | ||
199b2450 TL |
1343 | static void |
1344 | fputs_maybe_filtered (linebuffer, stream, filter) | |
088c3a0b | 1345 | const char *linebuffer; |
bd5635a1 | 1346 | FILE *stream; |
199b2450 | 1347 | int filter; |
bd5635a1 | 1348 | { |
7919c3ed | 1349 | const char *lineptr; |
bd5635a1 RP |
1350 | |
1351 | if (linebuffer == 0) | |
1352 | return; | |
0d172a2e | 1353 | |
bd5635a1 | 1354 | /* Don't do any filtering if it is disabled. */ |
199b2450 | 1355 | if (stream != gdb_stdout |
bd5635a1 RP |
1356 | || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX)) |
1357 | { | |
d8fc8773 | 1358 | fputs_unfiltered (linebuffer, stream); |
bd5635a1 RP |
1359 | return; |
1360 | } | |
1361 | ||
1362 | /* Go through and output each character. Show line extension | |
1363 | when this is necessary; prompt user for new page when this is | |
1364 | necessary. */ | |
1365 | ||
1366 | lineptr = linebuffer; | |
1367 | while (*lineptr) | |
1368 | { | |
1369 | /* Possible new page. */ | |
199b2450 TL |
1370 | if (filter && |
1371 | (lines_printed >= lines_per_page - 1)) | |
bd5635a1 RP |
1372 | prompt_for_continue (); |
1373 | ||
1374 | while (*lineptr && *lineptr != '\n') | |
1375 | { | |
1376 | /* Print a single line. */ | |
1377 | if (*lineptr == '\t') | |
1378 | { | |
1379 | if (wrap_column) | |
1380 | *wrap_pointer++ = '\t'; | |
1381 | else | |
d8fc8773 | 1382 | fputc_unfiltered ('\t', stream); |
bd5635a1 RP |
1383 | /* Shifting right by 3 produces the number of tab stops |
1384 | we have already passed, and then adding one and | |
1385 | shifting left 3 advances to the next tab stop. */ | |
1386 | chars_printed = ((chars_printed >> 3) + 1) << 3; | |
1387 | lineptr++; | |
1388 | } | |
1389 | else | |
1390 | { | |
1391 | if (wrap_column) | |
1392 | *wrap_pointer++ = *lineptr; | |
1393 | else | |
d8fc8773 | 1394 | fputc_unfiltered (*lineptr, stream); |
bd5635a1 RP |
1395 | chars_printed++; |
1396 | lineptr++; | |
1397 | } | |
1398 | ||
1399 | if (chars_printed >= chars_per_line) | |
1400 | { | |
1401 | unsigned int save_chars = chars_printed; | |
1402 | ||
1403 | chars_printed = 0; | |
1404 | lines_printed++; | |
1405 | /* If we aren't actually wrapping, don't output newline -- | |
1406 | if chars_per_line is right, we probably just overflowed | |
1407 | anyway; if it's wrong, let us keep going. */ | |
1408 | if (wrap_column) | |
d8fc8773 | 1409 | fputc_unfiltered ('\n', stream); |
bd5635a1 RP |
1410 | |
1411 | /* Possible new page. */ | |
1412 | if (lines_printed >= lines_per_page - 1) | |
1413 | prompt_for_continue (); | |
1414 | ||
1415 | /* Now output indentation and wrapped string */ | |
1416 | if (wrap_column) | |
1417 | { | |
d8fc8773 JK |
1418 | fputs_unfiltered (wrap_indent, stream); |
1419 | *wrap_pointer = '\0'; /* Null-terminate saved stuff */ | |
1420 | fputs_unfiltered (wrap_buffer, stream); /* and eject it */ | |
bd5635a1 RP |
1421 | /* FIXME, this strlen is what prevents wrap_indent from |
1422 | containing tabs. However, if we recurse to print it | |
1423 | and count its chars, we risk trouble if wrap_indent is | |
1424 | longer than (the user settable) chars_per_line. | |
1425 | Note also that this can set chars_printed > chars_per_line | |
1426 | if we are printing a long string. */ | |
1427 | chars_printed = strlen (wrap_indent) | |
1428 | + (save_chars - wrap_column); | |
1429 | wrap_pointer = wrap_buffer; /* Reset buffer */ | |
1430 | wrap_buffer[0] = '\0'; | |
1431 | wrap_column = 0; /* And disable fancy wrap */ | |
1432 | } | |
1433 | } | |
1434 | } | |
1435 | ||
1436 | if (*lineptr == '\n') | |
1437 | { | |
1438 | chars_printed = 0; | |
d11c44f1 | 1439 | wrap_here ((char *)0); /* Spit out chars, cancel further wraps */ |
bd5635a1 | 1440 | lines_printed++; |
d8fc8773 | 1441 | fputc_unfiltered ('\n', stream); |
bd5635a1 RP |
1442 | lineptr++; |
1443 | } | |
1444 | } | |
1445 | } | |
1446 | ||
199b2450 TL |
1447 | void |
1448 | fputs_filtered (linebuffer, stream) | |
1449 | const char *linebuffer; | |
1450 | FILE *stream; | |
1451 | { | |
1452 | fputs_maybe_filtered (linebuffer, stream, 1); | |
1453 | } | |
1454 | ||
a7f6f40b JK |
1455 | int |
1456 | putchar_unfiltered (c) | |
199b2450 TL |
1457 | int c; |
1458 | { | |
1459 | char buf[2]; | |
a7f6f40b | 1460 | |
199b2450 TL |
1461 | buf[0] = c; |
1462 | buf[1] = 0; | |
1463 | fputs_unfiltered (buf, gdb_stdout); | |
a7f6f40b | 1464 | return c; |
199b2450 TL |
1465 | } |
1466 | ||
a7f6f40b | 1467 | int |
199b2450 TL |
1468 | fputc_unfiltered (c, stream) |
1469 | int c; | |
1470 | FILE * stream; | |
1471 | { | |
1472 | char buf[2]; | |
a7f6f40b | 1473 | |
199b2450 TL |
1474 | buf[0] = c; |
1475 | buf[1] = 0; | |
1476 | fputs_unfiltered (buf, stream); | |
a7f6f40b | 1477 | return c; |
199b2450 TL |
1478 | } |
1479 | ||
1480 | ||
bd5635a1 RP |
1481 | /* Print a variable number of ARGS using format FORMAT. If this |
1482 | information is going to put the amount written (since the last call | |
d974236f | 1483 | to REINITIALIZE_MORE_FILTER or the last page break) over the page size, |
d8fc8773 | 1484 | call prompt_for_continue to get the users permision to continue. |
bd5635a1 RP |
1485 | |
1486 | Unlike fprintf, this function does not return a value. | |
1487 | ||
1488 | We implement three variants, vfprintf (takes a vararg list and stream), | |
1489 | fprintf (takes a stream to write on), and printf (the usual). | |
1490 | ||
bd5635a1 RP |
1491 | Note also that a longjmp to top level may occur in this routine |
1492 | (since prompt_for_continue may do so) so this routine should not be | |
1493 | called when cleanups are not in place. */ | |
1494 | ||
199b2450 TL |
1495 | static void |
1496 | vfprintf_maybe_filtered (stream, format, args, filter) | |
bd5635a1 RP |
1497 | FILE *stream; |
1498 | char *format; | |
7919c3ed | 1499 | va_list args; |
199b2450 | 1500 | int filter; |
bd5635a1 | 1501 | { |
d8fc8773 JK |
1502 | char *linebuffer; |
1503 | struct cleanup *old_cleanups; | |
bd5635a1 | 1504 | |
d8fc8773 JK |
1505 | vasprintf (&linebuffer, format, args); |
1506 | if (linebuffer == NULL) | |
9c036bd8 JK |
1507 | { |
1508 | fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr); | |
1509 | exit (1); | |
1510 | } | |
d8fc8773 | 1511 | old_cleanups = make_cleanup (free, linebuffer); |
199b2450 | 1512 | fputs_maybe_filtered (linebuffer, stream, filter); |
d8fc8773 | 1513 | do_cleanups (old_cleanups); |
199b2450 TL |
1514 | } |
1515 | ||
1516 | ||
1517 | void | |
1518 | vfprintf_filtered (stream, format, args) | |
1519 | FILE *stream; | |
cd10c7e3 | 1520 | const char *format; |
199b2450 TL |
1521 | va_list args; |
1522 | { | |
1523 | vfprintf_maybe_filtered (stream, format, args, 1); | |
1524 | } | |
1525 | ||
1526 | void | |
1527 | vfprintf_unfiltered (stream, format, args) | |
1528 | FILE *stream; | |
cd10c7e3 | 1529 | const char *format; |
199b2450 TL |
1530 | va_list args; |
1531 | { | |
d8fc8773 JK |
1532 | char *linebuffer; |
1533 | struct cleanup *old_cleanups; | |
1534 | ||
1535 | vasprintf (&linebuffer, format, args); | |
1536 | if (linebuffer == NULL) | |
9c036bd8 JK |
1537 | { |
1538 | fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr); | |
1539 | exit (1); | |
1540 | } | |
d8fc8773 JK |
1541 | old_cleanups = make_cleanup (free, linebuffer); |
1542 | fputs_unfiltered (linebuffer, stream); | |
1543 | do_cleanups (old_cleanups); | |
bd5635a1 RP |
1544 | } |
1545 | ||
51b80b00 FF |
1546 | void |
1547 | vprintf_filtered (format, args) | |
cd10c7e3 | 1548 | const char *format; |
51b80b00 FF |
1549 | va_list args; |
1550 | { | |
199b2450 TL |
1551 | vfprintf_maybe_filtered (gdb_stdout, format, args, 1); |
1552 | } | |
1553 | ||
1554 | void | |
1555 | vprintf_unfiltered (format, args) | |
cd10c7e3 | 1556 | const char *format; |
199b2450 TL |
1557 | va_list args; |
1558 | { | |
d8fc8773 | 1559 | vfprintf_unfiltered (gdb_stdout, format, args); |
51b80b00 FF |
1560 | } |
1561 | ||
bd5635a1 RP |
1562 | /* VARARGS */ |
1563 | void | |
45993f61 | 1564 | #ifdef ANSI_PROTOTYPES |
cd10c7e3 | 1565 | fprintf_filtered (FILE *stream, const char *format, ...) |
85c613aa | 1566 | #else |
bd5635a1 RP |
1567 | fprintf_filtered (va_alist) |
1568 | va_dcl | |
85c613aa | 1569 | #endif |
bd5635a1 | 1570 | { |
546014f7 | 1571 | va_list args; |
45993f61 | 1572 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
1573 | va_start (args, format); |
1574 | #else | |
bd5635a1 RP |
1575 | FILE *stream; |
1576 | char *format; | |
546014f7 PB |
1577 | |
1578 | va_start (args); | |
1579 | stream = va_arg (args, FILE *); | |
1580 | format = va_arg (args, char *); | |
85c613aa | 1581 | #endif |
546014f7 PB |
1582 | vfprintf_filtered (stream, format, args); |
1583 | va_end (args); | |
1584 | } | |
1585 | ||
199b2450 TL |
1586 | /* VARARGS */ |
1587 | void | |
45993f61 | 1588 | #ifdef ANSI_PROTOTYPES |
cd10c7e3 | 1589 | fprintf_unfiltered (FILE *stream, const char *format, ...) |
85c613aa | 1590 | #else |
199b2450 TL |
1591 | fprintf_unfiltered (va_alist) |
1592 | va_dcl | |
85c613aa | 1593 | #endif |
199b2450 TL |
1594 | { |
1595 | va_list args; | |
45993f61 | 1596 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
1597 | va_start (args, format); |
1598 | #else | |
199b2450 TL |
1599 | FILE *stream; |
1600 | char *format; | |
1601 | ||
1602 | va_start (args); | |
1603 | stream = va_arg (args, FILE *); | |
1604 | format = va_arg (args, char *); | |
85c613aa | 1605 | #endif |
199b2450 TL |
1606 | vfprintf_unfiltered (stream, format, args); |
1607 | va_end (args); | |
1608 | } | |
1609 | ||
d8fc8773 | 1610 | /* Like fprintf_filtered, but prints its result indented. |
199b2450 | 1611 | Called as fprintfi_filtered (spaces, stream, format, ...); */ |
546014f7 PB |
1612 | |
1613 | /* VARARGS */ | |
1614 | void | |
45993f61 | 1615 | #ifdef ANSI_PROTOTYPES |
cd10c7e3 | 1616 | fprintfi_filtered (int spaces, FILE *stream, const char *format, ...) |
85c613aa | 1617 | #else |
546014f7 PB |
1618 | fprintfi_filtered (va_alist) |
1619 | va_dcl | |
85c613aa | 1620 | #endif |
546014f7 | 1621 | { |
7919c3ed | 1622 | va_list args; |
45993f61 | 1623 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
1624 | va_start (args, format); |
1625 | #else | |
546014f7 PB |
1626 | int spaces; |
1627 | FILE *stream; | |
1628 | char *format; | |
bd5635a1 RP |
1629 | |
1630 | va_start (args); | |
546014f7 | 1631 | spaces = va_arg (args, int); |
bd5635a1 RP |
1632 | stream = va_arg (args, FILE *); |
1633 | format = va_arg (args, char *); | |
85c613aa | 1634 | #endif |
546014f7 | 1635 | print_spaces_filtered (spaces, stream); |
bd5635a1 | 1636 | |
7919c3ed | 1637 | vfprintf_filtered (stream, format, args); |
bd5635a1 RP |
1638 | va_end (args); |
1639 | } | |
1640 | ||
199b2450 | 1641 | |
bd5635a1 RP |
1642 | /* VARARGS */ |
1643 | void | |
45993f61 | 1644 | #ifdef ANSI_PROTOTYPES |
cd10c7e3 | 1645 | printf_filtered (const char *format, ...) |
85c613aa | 1646 | #else |
bd5635a1 RP |
1647 | printf_filtered (va_alist) |
1648 | va_dcl | |
85c613aa | 1649 | #endif |
bd5635a1 RP |
1650 | { |
1651 | va_list args; | |
45993f61 | 1652 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
1653 | va_start (args, format); |
1654 | #else | |
bd5635a1 RP |
1655 | char *format; |
1656 | ||
1657 | va_start (args); | |
1658 | format = va_arg (args, char *); | |
85c613aa | 1659 | #endif |
199b2450 TL |
1660 | vfprintf_filtered (gdb_stdout, format, args); |
1661 | va_end (args); | |
1662 | } | |
1663 | ||
1664 | ||
1665 | /* VARARGS */ | |
1666 | void | |
45993f61 | 1667 | #ifdef ANSI_PROTOTYPES |
cd10c7e3 | 1668 | printf_unfiltered (const char *format, ...) |
85c613aa | 1669 | #else |
199b2450 TL |
1670 | printf_unfiltered (va_alist) |
1671 | va_dcl | |
85c613aa | 1672 | #endif |
199b2450 TL |
1673 | { |
1674 | va_list args; | |
45993f61 | 1675 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
1676 | va_start (args, format); |
1677 | #else | |
199b2450 TL |
1678 | char *format; |
1679 | ||
1680 | va_start (args); | |
1681 | format = va_arg (args, char *); | |
85c613aa | 1682 | #endif |
199b2450 | 1683 | vfprintf_unfiltered (gdb_stdout, format, args); |
bd5635a1 RP |
1684 | va_end (args); |
1685 | } | |
bd5635a1 | 1686 | |
546014f7 | 1687 | /* Like printf_filtered, but prints it's result indented. |
199b2450 | 1688 | Called as printfi_filtered (spaces, format, ...); */ |
546014f7 PB |
1689 | |
1690 | /* VARARGS */ | |
1691 | void | |
45993f61 | 1692 | #ifdef ANSI_PROTOTYPES |
cd10c7e3 | 1693 | printfi_filtered (int spaces, const char *format, ...) |
85c613aa | 1694 | #else |
546014f7 PB |
1695 | printfi_filtered (va_alist) |
1696 | va_dcl | |
85c613aa | 1697 | #endif |
546014f7 PB |
1698 | { |
1699 | va_list args; | |
45993f61 | 1700 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
1701 | va_start (args, format); |
1702 | #else | |
546014f7 PB |
1703 | int spaces; |
1704 | char *format; | |
1705 | ||
1706 | va_start (args); | |
1707 | spaces = va_arg (args, int); | |
1708 | format = va_arg (args, char *); | |
85c613aa | 1709 | #endif |
199b2450 TL |
1710 | print_spaces_filtered (spaces, gdb_stdout); |
1711 | vfprintf_filtered (gdb_stdout, format, args); | |
546014f7 PB |
1712 | va_end (args); |
1713 | } | |
1714 | ||
51b80b00 FF |
1715 | /* Easy -- but watch out! |
1716 | ||
1717 | This routine is *not* a replacement for puts()! puts() appends a newline. | |
1718 | This one doesn't, and had better not! */ | |
bd5635a1 RP |
1719 | |
1720 | void | |
1721 | puts_filtered (string) | |
cd10c7e3 | 1722 | const char *string; |
bd5635a1 | 1723 | { |
199b2450 TL |
1724 | fputs_filtered (string, gdb_stdout); |
1725 | } | |
1726 | ||
1727 | void | |
1728 | puts_unfiltered (string) | |
cd10c7e3 | 1729 | const char *string; |
199b2450 TL |
1730 | { |
1731 | fputs_unfiltered (string, gdb_stdout); | |
bd5635a1 RP |
1732 | } |
1733 | ||
1734 | /* Return a pointer to N spaces and a null. The pointer is good | |
1735 | until the next call to here. */ | |
1736 | char * | |
1737 | n_spaces (n) | |
1738 | int n; | |
1739 | { | |
1740 | register char *t; | |
1741 | static char *spaces; | |
1742 | static int max_spaces; | |
1743 | ||
1744 | if (n > max_spaces) | |
1745 | { | |
1746 | if (spaces) | |
1747 | free (spaces); | |
3624c875 | 1748 | spaces = (char *) xmalloc (n+1); |
bd5635a1 RP |
1749 | for (t = spaces+n; t != spaces;) |
1750 | *--t = ' '; | |
1751 | spaces[n] = '\0'; | |
1752 | max_spaces = n; | |
1753 | } | |
1754 | ||
1755 | return spaces + max_spaces - n; | |
1756 | } | |
1757 | ||
1758 | /* Print N spaces. */ | |
1759 | void | |
1760 | print_spaces_filtered (n, stream) | |
1761 | int n; | |
1762 | FILE *stream; | |
1763 | { | |
1764 | fputs_filtered (n_spaces (n), stream); | |
1765 | } | |
1766 | \f | |
1767 | /* C++ demangler stuff. */ | |
bd5635a1 | 1768 | |
65ce5df4 JG |
1769 | /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language |
1770 | LANG, using demangling args ARG_MODE, and print it filtered to STREAM. | |
1771 | If the name is not mangled, or the language for the name is unknown, or | |
1772 | demangling is off, the name is printed in its "raw" form. */ | |
1773 | ||
bd5635a1 | 1774 | void |
65ce5df4 | 1775 | fprintf_symbol_filtered (stream, name, lang, arg_mode) |
bd5635a1 RP |
1776 | FILE *stream; |
1777 | char *name; | |
65ce5df4 JG |
1778 | enum language lang; |
1779 | int arg_mode; | |
bd5635a1 | 1780 | { |
65ce5df4 | 1781 | char *demangled; |
bd5d07d9 | 1782 | |
65ce5df4 | 1783 | if (name != NULL) |
bd5d07d9 | 1784 | { |
65ce5df4 JG |
1785 | /* If user wants to see raw output, no problem. */ |
1786 | if (!demangle) | |
bd5d07d9 | 1787 | { |
65ce5df4 JG |
1788 | fputs_filtered (name, stream); |
1789 | } | |
1790 | else | |
1791 | { | |
1792 | switch (lang) | |
1793 | { | |
1794 | case language_cplus: | |
1795 | demangled = cplus_demangle (name, arg_mode); | |
1796 | break; | |
65ce5df4 JG |
1797 | case language_chill: |
1798 | demangled = chill_demangle (name); | |
1799 | break; | |
65ce5df4 JG |
1800 | default: |
1801 | demangled = NULL; | |
1802 | break; | |
1803 | } | |
1804 | fputs_filtered (demangled ? demangled : name, stream); | |
1805 | if (demangled != NULL) | |
1806 | { | |
1807 | free (demangled); | |
1808 | } | |
bd5d07d9 | 1809 | } |
bd5635a1 RP |
1810 | } |
1811 | } | |
51b57ded FF |
1812 | |
1813 | /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any | |
1814 | differences in whitespace. Returns 0 if they match, non-zero if they | |
546014f7 PB |
1815 | don't (slightly different than strcmp()'s range of return values). |
1816 | ||
1817 | As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO". | |
2e4964ad FF |
1818 | This "feature" is useful when searching for matching C++ function names |
1819 | (such as if the user types 'break FOO', where FOO is a mangled C++ | |
1820 | function). */ | |
51b57ded | 1821 | |
51b80b00 | 1822 | int |
51b57ded FF |
1823 | strcmp_iw (string1, string2) |
1824 | const char *string1; | |
1825 | const char *string2; | |
1826 | { | |
1827 | while ((*string1 != '\0') && (*string2 != '\0')) | |
1828 | { | |
1829 | while (isspace (*string1)) | |
1830 | { | |
1831 | string1++; | |
1832 | } | |
1833 | while (isspace (*string2)) | |
1834 | { | |
1835 | string2++; | |
1836 | } | |
1837 | if (*string1 != *string2) | |
1838 | { | |
1839 | break; | |
1840 | } | |
1841 | if (*string1 != '\0') | |
1842 | { | |
1843 | string1++; | |
1844 | string2++; | |
1845 | } | |
1846 | } | |
546014f7 | 1847 | return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0'); |
51b57ded FF |
1848 | } |
1849 | ||
bd5635a1 | 1850 | \f |
bd5635a1 | 1851 | void |
0d172a2e | 1852 | initialize_utils () |
bd5635a1 RP |
1853 | { |
1854 | struct cmd_list_element *c; | |
1855 | ||
1856 | c = add_set_cmd ("width", class_support, var_uinteger, | |
1857 | (char *)&chars_per_line, | |
1858 | "Set number of characters gdb thinks are in a line.", | |
1859 | &setlist); | |
1860 | add_show_from_set (c, &showlist); | |
d747e0af | 1861 | c->function.sfunc = set_width_command; |
bd5635a1 RP |
1862 | |
1863 | add_show_from_set | |
1864 | (add_set_cmd ("height", class_support, | |
1865 | var_uinteger, (char *)&lines_per_page, | |
1866 | "Set number of lines gdb thinks are in a page.", &setlist), | |
1867 | &showlist); | |
1868 | ||
1869 | /* These defaults will be used if we are unable to get the correct | |
1870 | values from termcap. */ | |
686941a9 | 1871 | #if defined(__GO32__) || defined(__WIN32__) |
51b57ded FF |
1872 | lines_per_page = ScreenRows(); |
1873 | chars_per_line = ScreenCols(); | |
1874 | #else | |
bd5635a1 RP |
1875 | lines_per_page = 24; |
1876 | chars_per_line = 80; | |
49073be0 | 1877 | |
a6b26c44 SS |
1878 | #ifndef MPW |
1879 | /* No termcap under MPW, although might be cool to do something | |
1880 | by looking at worksheet or console window sizes. */ | |
bd5635a1 RP |
1881 | /* Initialize the screen height and width from termcap. */ |
1882 | { | |
1883 | char *termtype = getenv ("TERM"); | |
1884 | ||
1885 | /* Positive means success, nonpositive means failure. */ | |
1886 | int status; | |
1887 | ||
1888 | /* 2048 is large enough for all known terminals, according to the | |
1889 | GNU termcap manual. */ | |
1890 | char term_buffer[2048]; | |
1891 | ||
1892 | if (termtype) | |
1893 | { | |
1894 | status = tgetent (term_buffer, termtype); | |
1895 | if (status > 0) | |
1896 | { | |
1897 | int val; | |
1898 | ||
1899 | val = tgetnum ("li"); | |
1900 | if (val >= 0) | |
1901 | lines_per_page = val; | |
1902 | else | |
1903 | /* The number of lines per page is not mentioned | |
1904 | in the terminal description. This probably means | |
1905 | that paging is not useful (e.g. emacs shell window), | |
1906 | so disable paging. */ | |
1907 | lines_per_page = UINT_MAX; | |
1908 | ||
1909 | val = tgetnum ("co"); | |
1910 | if (val >= 0) | |
1911 | chars_per_line = val; | |
1912 | } | |
1913 | } | |
1914 | } | |
a6b26c44 | 1915 | #endif /* MPW */ |
bd5635a1 | 1916 | |
1eeba686 PB |
1917 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) |
1918 | ||
4ace50a5 | 1919 | /* If there is a better way to determine the window size, use it. */ |
1eeba686 PB |
1920 | SIGWINCH_HANDLER (); |
1921 | #endif | |
51b57ded | 1922 | #endif |
2bc2e684 | 1923 | /* If the output is not a terminal, don't paginate it. */ |
199b2450 | 1924 | if (!ISATTY (gdb_stdout)) |
2bc2e684 FF |
1925 | lines_per_page = UINT_MAX; |
1926 | ||
bd5635a1 RP |
1927 | set_width_command ((char *)NULL, 0, c); |
1928 | ||
1929 | add_show_from_set | |
1930 | (add_set_cmd ("demangle", class_support, var_boolean, | |
1931 | (char *)&demangle, | |
1932 | "Set demangling of encoded C++ names when displaying symbols.", | |
f266e564 JK |
1933 | &setprintlist), |
1934 | &showprintlist); | |
bd5635a1 RP |
1935 | |
1936 | add_show_from_set | |
1937 | (add_set_cmd ("sevenbit-strings", class_support, var_boolean, | |
1938 | (char *)&sevenbit_strings, | |
1939 | "Set printing of 8-bit characters in strings as \\nnn.", | |
f266e564 JK |
1940 | &setprintlist), |
1941 | &showprintlist); | |
bd5635a1 RP |
1942 | |
1943 | add_show_from_set | |
1944 | (add_set_cmd ("asm-demangle", class_support, var_boolean, | |
1945 | (char *)&asm_demangle, | |
1946 | "Set demangling of C++ names in disassembly listings.", | |
f266e564 JK |
1947 | &setprintlist), |
1948 | &showprintlist); | |
bd5635a1 | 1949 | } |
1eeba686 PB |
1950 | |
1951 | /* Machine specific function to handle SIGWINCH signal. */ | |
1952 | ||
1953 | #ifdef SIGWINCH_HANDLER_BODY | |
1954 | SIGWINCH_HANDLER_BODY | |
1955 | #endif | |
a243a22f | 1956 | \f |
54109914 | 1957 | /* Support for converting target fp numbers into host DOUBLEST format. */ |
a243a22f SG |
1958 | |
1959 | /* XXX - This code should really be in libiberty/floatformat.c, however | |
1960 | configuration issues with libiberty made this very difficult to do in the | |
1961 | available time. */ | |
1962 | ||
1963 | #include "floatformat.h" | |
1964 | #include <math.h> /* ldexp */ | |
1965 | ||
1966 | /* The odds that CHAR_BIT will be anything but 8 are low enough that I'm not | |
1967 | going to bother with trying to muck around with whether it is defined in | |
1968 | a system header, what we do if not, etc. */ | |
1969 | #define FLOATFORMAT_CHAR_BIT 8 | |
1970 | ||
1971 | static unsigned long get_field PARAMS ((unsigned char *, | |
1972 | enum floatformat_byteorders, | |
1973 | unsigned int, | |
1974 | unsigned int, | |
1975 | unsigned int)); | |
1976 | ||
1977 | /* Extract a field which starts at START and is LEN bytes long. DATA and | |
1978 | TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */ | |
1979 | static unsigned long | |
1980 | get_field (data, order, total_len, start, len) | |
1981 | unsigned char *data; | |
1982 | enum floatformat_byteorders order; | |
1983 | unsigned int total_len; | |
1984 | unsigned int start; | |
1985 | unsigned int len; | |
1986 | { | |
1987 | unsigned long result; | |
1988 | unsigned int cur_byte; | |
1989 | int cur_bitshift; | |
1990 | ||
1991 | /* Start at the least significant part of the field. */ | |
1992 | cur_byte = (start + len) / FLOATFORMAT_CHAR_BIT; | |
1993 | if (order == floatformat_little) | |
1994 | cur_byte = (total_len / FLOATFORMAT_CHAR_BIT) - cur_byte - 1; | |
1995 | cur_bitshift = | |
1996 | ((start + len) % FLOATFORMAT_CHAR_BIT) - FLOATFORMAT_CHAR_BIT; | |
1997 | result = *(data + cur_byte) >> (-cur_bitshift); | |
1998 | cur_bitshift += FLOATFORMAT_CHAR_BIT; | |
1999 | if (order == floatformat_little) | |
2000 | ++cur_byte; | |
2001 | else | |
2002 | --cur_byte; | |
2003 | ||
2004 | /* Move towards the most significant part of the field. */ | |
2005 | while (cur_bitshift < len) | |
2006 | { | |
2007 | if (len - cur_bitshift < FLOATFORMAT_CHAR_BIT) | |
2008 | /* This is the last byte; zero out the bits which are not part of | |
2009 | this field. */ | |
2010 | result |= | |
2011 | (*(data + cur_byte) & ((1 << (len - cur_bitshift)) - 1)) | |
2012 | << cur_bitshift; | |
2013 | else | |
2014 | result |= *(data + cur_byte) << cur_bitshift; | |
2015 | cur_bitshift += FLOATFORMAT_CHAR_BIT; | |
2016 | if (order == floatformat_little) | |
2017 | ++cur_byte; | |
2018 | else | |
2019 | --cur_byte; | |
2020 | } | |
2021 | return result; | |
2022 | } | |
2023 | ||
54109914 | 2024 | /* Convert from FMT to a DOUBLEST. |
a243a22f | 2025 | FROM is the address of the extended float. |
54109914 | 2026 | Store the DOUBLEST in *TO. */ |
a243a22f SG |
2027 | |
2028 | void | |
54109914 | 2029 | floatformat_to_doublest (fmt, from, to) |
a243a22f SG |
2030 | const struct floatformat *fmt; |
2031 | char *from; | |
54109914 | 2032 | DOUBLEST *to; |
a243a22f SG |
2033 | { |
2034 | unsigned char *ufrom = (unsigned char *)from; | |
54109914 | 2035 | DOUBLEST dto; |
a243a22f SG |
2036 | long exponent; |
2037 | unsigned long mant; | |
2038 | unsigned int mant_bits, mant_off; | |
2039 | int mant_bits_left; | |
449abd89 | 2040 | int special_exponent; /* It's a NaN, denorm or zero */ |
a243a22f SG |
2041 | |
2042 | exponent = get_field (ufrom, fmt->byteorder, fmt->totalsize, | |
2043 | fmt->exp_start, fmt->exp_len); | |
2044 | /* Note that if exponent indicates a NaN, we can't really do anything useful | |
2045 | (not knowing if the host has NaN's, or how to build one). So it will | |
2046 | end up as an infinity or something close; that is OK. */ | |
2047 | ||
2048 | mant_bits_left = fmt->man_len; | |
2049 | mant_off = fmt->man_start; | |
2050 | dto = 0.0; | |
449abd89 SG |
2051 | |
2052 | special_exponent = exponent == 0 || exponent == fmt->exp_nan; | |
2053 | ||
2054 | /* Don't bias zero's, denorms or NaNs. */ | |
2055 | if (!special_exponent) | |
2056 | exponent -= fmt->exp_bias; | |
a243a22f SG |
2057 | |
2058 | /* Build the result algebraically. Might go infinite, underflow, etc; | |
2059 | who cares. */ | |
2060 | ||
2061 | /* If this format uses a hidden bit, explicitly add it in now. Otherwise, | |
2062 | increment the exponent by one to account for the integer bit. */ | |
2063 | ||
449abd89 SG |
2064 | if (!special_exponent) |
2065 | if (fmt->intbit == floatformat_intbit_no) | |
2066 | dto = ldexp (1.0, exponent); | |
2067 | else | |
2068 | exponent++; | |
a243a22f SG |
2069 | |
2070 | while (mant_bits_left > 0) | |
2071 | { | |
2072 | mant_bits = min (mant_bits_left, 32); | |
2073 | ||
2074 | mant = get_field (ufrom, fmt->byteorder, fmt->totalsize, | |
2075 | mant_off, mant_bits); | |
2076 | ||
2077 | dto += ldexp ((double)mant, exponent - mant_bits); | |
2078 | exponent -= mant_bits; | |
2079 | mant_off += mant_bits; | |
2080 | mant_bits_left -= mant_bits; | |
2081 | } | |
2082 | ||
2083 | /* Negate it if negative. */ | |
2084 | if (get_field (ufrom, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1)) | |
2085 | dto = -dto; | |
449abd89 | 2086 | *to = dto; |
a243a22f SG |
2087 | } |
2088 | \f | |
2089 | static void put_field PARAMS ((unsigned char *, enum floatformat_byteorders, | |
2090 | unsigned int, | |
2091 | unsigned int, | |
2092 | unsigned int, | |
2093 | unsigned long)); | |
2094 | ||
2095 | /* Set a field which starts at START and is LEN bytes long. DATA and | |
2096 | TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */ | |
2097 | static void | |
2098 | put_field (data, order, total_len, start, len, stuff_to_put) | |
2099 | unsigned char *data; | |
2100 | enum floatformat_byteorders order; | |
2101 | unsigned int total_len; | |
2102 | unsigned int start; | |
2103 | unsigned int len; | |
2104 | unsigned long stuff_to_put; | |
2105 | { | |
2106 | unsigned int cur_byte; | |
2107 | int cur_bitshift; | |
2108 | ||
2109 | /* Start at the least significant part of the field. */ | |
2110 | cur_byte = (start + len) / FLOATFORMAT_CHAR_BIT; | |
2111 | if (order == floatformat_little) | |
2112 | cur_byte = (total_len / FLOATFORMAT_CHAR_BIT) - cur_byte - 1; | |
2113 | cur_bitshift = | |
2114 | ((start + len) % FLOATFORMAT_CHAR_BIT) - FLOATFORMAT_CHAR_BIT; | |
2115 | *(data + cur_byte) &= | |
2116 | ~(((1 << ((start + len) % FLOATFORMAT_CHAR_BIT)) - 1) << (-cur_bitshift)); | |
2117 | *(data + cur_byte) |= | |
2118 | (stuff_to_put & ((1 << FLOATFORMAT_CHAR_BIT) - 1)) << (-cur_bitshift); | |
2119 | cur_bitshift += FLOATFORMAT_CHAR_BIT; | |
2120 | if (order == floatformat_little) | |
2121 | ++cur_byte; | |
2122 | else | |
2123 | --cur_byte; | |
2124 | ||
2125 | /* Move towards the most significant part of the field. */ | |
2126 | while (cur_bitshift < len) | |
2127 | { | |
2128 | if (len - cur_bitshift < FLOATFORMAT_CHAR_BIT) | |
2129 | { | |
2130 | /* This is the last byte. */ | |
2131 | *(data + cur_byte) &= | |
2132 | ~((1 << (len - cur_bitshift)) - 1); | |
2133 | *(data + cur_byte) |= (stuff_to_put >> cur_bitshift); | |
2134 | } | |
2135 | else | |
2136 | *(data + cur_byte) = ((stuff_to_put >> cur_bitshift) | |
2137 | & ((1 << FLOATFORMAT_CHAR_BIT) - 1)); | |
2138 | cur_bitshift += FLOATFORMAT_CHAR_BIT; | |
2139 | if (order == floatformat_little) | |
2140 | ++cur_byte; | |
2141 | else | |
2142 | --cur_byte; | |
2143 | } | |
2144 | } | |
2145 | ||
54109914 | 2146 | #ifdef HAVE_LONG_DOUBLE |
a243a22f SG |
2147 | /* Return the fractional part of VALUE, and put the exponent of VALUE in *EPTR. |
2148 | The range of the returned value is >= 0.5 and < 1.0. This is equivalent to | |
2149 | frexp, but operates on the long double data type. */ | |
2150 | ||
2151 | static long double ldfrexp PARAMS ((long double value, int *eptr)); | |
2152 | ||
2153 | static long double | |
2154 | ldfrexp (value, eptr) | |
2155 | long double value; | |
2156 | int *eptr; | |
2157 | { | |
2158 | long double tmp; | |
2159 | int exp; | |
2160 | ||
2161 | /* Unfortunately, there are no portable functions for extracting the exponent | |
2162 | of a long double, so we have to do it iteratively by multiplying or dividing | |
2163 | by two until the fraction is between 0.5 and 1.0. */ | |
2164 | ||
2165 | if (value < 0.0l) | |
2166 | value = -value; | |
2167 | ||
2168 | tmp = 1.0l; | |
2169 | exp = 0; | |
2170 | ||
2171 | if (value >= tmp) /* Value >= 1.0 */ | |
2172 | while (value >= tmp) | |
2173 | { | |
2174 | tmp *= 2.0l; | |
2175 | exp++; | |
2176 | } | |
2177 | else if (value != 0.0l) /* Value < 1.0 and > 0.0 */ | |
2178 | { | |
2179 | while (value < tmp) | |
2180 | { | |
2181 | tmp /= 2.0l; | |
2182 | exp--; | |
2183 | } | |
2184 | tmp *= 2.0l; | |
2185 | exp++; | |
2186 | } | |
2187 | ||
2188 | *eptr = exp; | |
2189 | return value/tmp; | |
2190 | } | |
54109914 FF |
2191 | #endif /* HAVE_LONG_DOUBLE */ |
2192 | ||
a243a22f | 2193 | |
54109914 | 2194 | /* The converse: convert the DOUBLEST *FROM to an extended float |
a243a22f SG |
2195 | and store where TO points. Neither FROM nor TO have any alignment |
2196 | restrictions. */ | |
2197 | ||
2198 | void | |
54109914 | 2199 | floatformat_from_doublest (fmt, from, to) |
a243a22f | 2200 | CONST struct floatformat *fmt; |
54109914 | 2201 | DOUBLEST *from; |
a243a22f SG |
2202 | char *to; |
2203 | { | |
54109914 | 2204 | DOUBLEST dfrom; |
a243a22f | 2205 | int exponent; |
54109914 | 2206 | DOUBLEST mant; |
a243a22f SG |
2207 | unsigned int mant_bits, mant_off; |
2208 | int mant_bits_left; | |
2209 | unsigned char *uto = (unsigned char *)to; | |
2210 | ||
2211 | memcpy (&dfrom, from, sizeof (dfrom)); | |
2212 | memset (uto, 0, fmt->totalsize / FLOATFORMAT_CHAR_BIT); | |
2213 | if (dfrom == 0) | |
2214 | return; /* Result is zero */ | |
2215 | if (dfrom != dfrom) | |
2216 | { | |
2217 | /* From is NaN */ | |
2218 | put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start, | |
2219 | fmt->exp_len, fmt->exp_nan); | |
2220 | /* Be sure it's not infinity, but NaN value is irrel */ | |
2221 | put_field (uto, fmt->byteorder, fmt->totalsize, fmt->man_start, | |
2222 | 32, 1); | |
2223 | return; | |
2224 | } | |
2225 | ||
2226 | /* If negative, set the sign bit. */ | |
2227 | if (dfrom < 0) | |
2228 | { | |
2229 | put_field (uto, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1, 1); | |
2230 | dfrom = -dfrom; | |
2231 | } | |
2232 | ||
2233 | /* How to tell an infinity from an ordinary number? FIXME-someday */ | |
2234 | ||
54109914 | 2235 | #ifdef HAVE_LONG_DOUBLE |
a243a22f | 2236 | mant = ldfrexp (dfrom, &exponent); |
54109914 FF |
2237 | #else |
2238 | mant = frexp (dfrom, &exponent); | |
2239 | #endif | |
2240 | ||
a243a22f SG |
2241 | put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start, fmt->exp_len, |
2242 | exponent + fmt->exp_bias - 1); | |
2243 | ||
2244 | mant_bits_left = fmt->man_len; | |
2245 | mant_off = fmt->man_start; | |
2246 | while (mant_bits_left > 0) | |
2247 | { | |
2248 | unsigned long mant_long; | |
2249 | mant_bits = mant_bits_left < 32 ? mant_bits_left : 32; | |
2250 | ||
2251 | mant *= 4294967296.0; | |
2252 | mant_long = (unsigned long)mant; | |
2253 | mant -= mant_long; | |
2254 | ||
2255 | /* If the integer bit is implicit, then we need to discard it. | |
2256 | If we are discarding a zero, we should be (but are not) creating | |
2257 | a denormalized number which means adjusting the exponent | |
2258 | (I think). */ | |
2259 | if (mant_bits_left == fmt->man_len | |
2260 | && fmt->intbit == floatformat_intbit_no) | |
2261 | { | |
2262 | mant_long &= 0x7fffffff; | |
2263 | mant_bits -= 1; | |
2264 | } | |
2265 | else if (mant_bits < 32) | |
2266 | { | |
2267 | /* The bits we want are in the most significant MANT_BITS bits of | |
2268 | mant_long. Move them to the least significant. */ | |
2269 | mant_long >>= 32 - mant_bits; | |
2270 | } | |
2271 | ||
2272 | put_field (uto, fmt->byteorder, fmt->totalsize, | |
2273 | mant_off, mant_bits, mant_long); | |
2274 | mant_off += mant_bits; | |
2275 | mant_bits_left -= mant_bits; | |
2276 | } | |
2277 | } |