Commit | Line | Data |
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c906108c | 1 | /* General utility routines for GDB, the GNU debugger. |
1bac305b | 2 | |
6aba47ca DJ |
3 | Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
4 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 | |
46e9880c | 5 | Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 21 | |
4e8f7a8b DJ |
22 | #include "defs.h" |
23 | #include "gdb_assert.h" | |
24 | #include <ctype.h> | |
25 | #include "gdb_string.h" | |
26 | #include "event-top.h" | |
60250e8b | 27 | #include "exceptions.h" |
4e8f7a8b | 28 | |
6a83354a AC |
29 | #ifdef TUI |
30 | #include "tui/tui.h" /* For tui_get_command_dimension. */ | |
31 | #endif | |
32 | ||
9d271fd8 AC |
33 | #ifdef __GO32__ |
34 | #include <pc.h> | |
35 | #endif | |
36 | ||
c906108c SS |
37 | /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */ |
38 | #ifdef reg | |
39 | #undef reg | |
40 | #endif | |
41 | ||
042be3a9 | 42 | #include <signal.h> |
c906108c SS |
43 | #include "gdbcmd.h" |
44 | #include "serial.h" | |
45 | #include "bfd.h" | |
46 | #include "target.h" | |
47 | #include "demangle.h" | |
48 | #include "expression.h" | |
49 | #include "language.h" | |
234b45d4 | 50 | #include "charset.h" |
c906108c | 51 | #include "annotate.h" |
303c8ebd | 52 | #include "filenames.h" |
7b90c3f9 | 53 | #include "symfile.h" |
ae5a43e0 | 54 | #include "gdb_obstack.h" |
698ba934 | 55 | #include "top.h" |
c906108c | 56 | |
8731e58e | 57 | #include "inferior.h" /* for signed_pointer_to_address */ |
ac2e2ef7 | 58 | |
2d1b2124 AC |
59 | #include <sys/param.h> /* For MAXPATHLEN */ |
60 | ||
3b78cdbb | 61 | #include "gdb_curses.h" |
020cc13c | 62 | |
dbda9972 | 63 | #include "readline/readline.h" |
c906108c | 64 | |
a3828db0 | 65 | #if !HAVE_DECL_MALLOC |
8dbb1c65 | 66 | extern PTR malloc (); /* OK: PTR */ |
3c37485b | 67 | #endif |
a3828db0 | 68 | #if !HAVE_DECL_REALLOC |
8dbb1c65 | 69 | extern PTR realloc (); /* OK: PTR */ |
0e52036f | 70 | #endif |
a3828db0 | 71 | #if !HAVE_DECL_FREE |
81b8eb80 AC |
72 | extern void free (); |
73 | #endif | |
81b8eb80 | 74 | |
c906108c SS |
75 | /* readline defines this. */ |
76 | #undef savestring | |
77 | ||
9a4105ab | 78 | void (*deprecated_error_begin_hook) (void); |
c906108c SS |
79 | |
80 | /* Prototypes for local functions */ | |
81 | ||
d9fcf2fb | 82 | static void vfprintf_maybe_filtered (struct ui_file *, const char *, |
bee0189a | 83 | va_list, int) ATTR_FORMAT (printf, 2, 0); |
c906108c | 84 | |
d9fcf2fb | 85 | static void fputs_maybe_filtered (const char *, struct ui_file *, int); |
c906108c | 86 | |
e42c9534 AC |
87 | static void do_my_cleanups (struct cleanup **, struct cleanup *); |
88 | ||
a14ed312 | 89 | static void prompt_for_continue (void); |
c906108c | 90 | |
eb0d3137 | 91 | static void set_screen_size (void); |
a14ed312 | 92 | static void set_width (void); |
c906108c | 93 | |
c906108c SS |
94 | /* Chain of cleanup actions established with make_cleanup, |
95 | to be executed if an error happens. */ | |
96 | ||
c5aa993b JM |
97 | static struct cleanup *cleanup_chain; /* cleaned up after a failed command */ |
98 | static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */ | |
c5aa993b | 99 | static struct cleanup *exec_cleanup_chain; /* cleaned up on each execution command */ |
6426a772 | 100 | /* cleaned up on each error from within an execution command */ |
8731e58e | 101 | static struct cleanup *exec_error_cleanup_chain; |
43ff13b4 JM |
102 | |
103 | /* Pointer to what is left to do for an execution command after the | |
104 | target stops. Used only in asynchronous mode, by targets that | |
105 | support async execution. The finish and until commands use it. So | |
106 | does the target extended-remote command. */ | |
107 | struct continuation *cmd_continuation; | |
c2d11a7d | 108 | struct continuation *intermediate_continuation; |
c906108c SS |
109 | |
110 | /* Nonzero if we have job control. */ | |
111 | ||
112 | int job_control; | |
113 | ||
114 | /* Nonzero means a quit has been requested. */ | |
115 | ||
116 | int quit_flag; | |
117 | ||
118 | /* Nonzero means quit immediately if Control-C is typed now, rather | |
119 | than waiting until QUIT is executed. Be careful in setting this; | |
120 | code which executes with immediate_quit set has to be very careful | |
121 | about being able to deal with being interrupted at any time. It is | |
122 | almost always better to use QUIT; the only exception I can think of | |
123 | is being able to quit out of a system call (using EINTR loses if | |
124 | the SIGINT happens between the previous QUIT and the system call). | |
125 | To immediately quit in the case in which a SIGINT happens between | |
126 | the previous QUIT and setting immediate_quit (desirable anytime we | |
127 | expect to block), call QUIT after setting immediate_quit. */ | |
128 | ||
129 | int immediate_quit; | |
130 | ||
4a351cef AF |
131 | /* Nonzero means that encoded C++/ObjC names should be printed out in their |
132 | C++/ObjC form rather than raw. */ | |
c906108c SS |
133 | |
134 | int demangle = 1; | |
920d2a44 AC |
135 | static void |
136 | show_demangle (struct ui_file *file, int from_tty, | |
137 | struct cmd_list_element *c, const char *value) | |
138 | { | |
139 | fprintf_filtered (file, _("\ | |
140 | Demangling of encoded C++/ObjC names when displaying symbols is %s.\n"), | |
141 | value); | |
142 | } | |
c906108c | 143 | |
4a351cef AF |
144 | /* Nonzero means that encoded C++/ObjC names should be printed out in their |
145 | C++/ObjC form even in assembler language displays. If this is set, but | |
c906108c SS |
146 | DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */ |
147 | ||
148 | int asm_demangle = 0; | |
920d2a44 AC |
149 | static void |
150 | show_asm_demangle (struct ui_file *file, int from_tty, | |
151 | struct cmd_list_element *c, const char *value) | |
152 | { | |
153 | fprintf_filtered (file, _("\ | |
154 | Demangling of C++/ObjC names in disassembly listings is %s.\n"), | |
155 | value); | |
156 | } | |
c906108c SS |
157 | |
158 | /* Nonzero means that strings with character values >0x7F should be printed | |
159 | as octal escapes. Zero means just print the value (e.g. it's an | |
160 | international character, and the terminal or window can cope.) */ | |
161 | ||
162 | int sevenbit_strings = 0; | |
920d2a44 AC |
163 | static void |
164 | show_sevenbit_strings (struct ui_file *file, int from_tty, | |
165 | struct cmd_list_element *c, const char *value) | |
166 | { | |
167 | fprintf_filtered (file, _("\ | |
168 | Printing of 8-bit characters in strings as \\nnn is %s.\n"), | |
169 | value); | |
170 | } | |
c906108c SS |
171 | |
172 | /* String to be printed before error messages, if any. */ | |
173 | ||
174 | char *error_pre_print; | |
175 | ||
176 | /* String to be printed before quit messages, if any. */ | |
177 | ||
178 | char *quit_pre_print; | |
179 | ||
180 | /* String to be printed before warning messages, if any. */ | |
181 | ||
182 | char *warning_pre_print = "\nwarning: "; | |
183 | ||
184 | int pagination_enabled = 1; | |
920d2a44 AC |
185 | static void |
186 | show_pagination_enabled (struct ui_file *file, int from_tty, | |
187 | struct cmd_list_element *c, const char *value) | |
188 | { | |
189 | fprintf_filtered (file, _("State of pagination is %s.\n"), value); | |
190 | } | |
191 | ||
c906108c | 192 | \f |
c5aa993b | 193 | |
c906108c SS |
194 | /* Add a new cleanup to the cleanup_chain, |
195 | and return the previous chain pointer | |
196 | to be passed later to do_cleanups or discard_cleanups. | |
197 | Args are FUNCTION to clean up with, and ARG to pass to it. */ | |
198 | ||
199 | struct cleanup * | |
e4005526 | 200 | make_cleanup (make_cleanup_ftype *function, void *arg) |
c906108c | 201 | { |
c5aa993b | 202 | return make_my_cleanup (&cleanup_chain, function, arg); |
c906108c SS |
203 | } |
204 | ||
205 | struct cleanup * | |
e4005526 | 206 | make_final_cleanup (make_cleanup_ftype *function, void *arg) |
c906108c | 207 | { |
c5aa993b | 208 | return make_my_cleanup (&final_cleanup_chain, function, arg); |
c906108c | 209 | } |
7a292a7a | 210 | |
43ff13b4 | 211 | struct cleanup * |
e4005526 | 212 | make_exec_cleanup (make_cleanup_ftype *function, void *arg) |
43ff13b4 | 213 | { |
c5aa993b | 214 | return make_my_cleanup (&exec_cleanup_chain, function, arg); |
43ff13b4 JM |
215 | } |
216 | ||
6426a772 | 217 | struct cleanup * |
e4005526 | 218 | make_exec_error_cleanup (make_cleanup_ftype *function, void *arg) |
6426a772 JM |
219 | { |
220 | return make_my_cleanup (&exec_error_cleanup_chain, function, arg); | |
221 | } | |
222 | ||
7a292a7a | 223 | static void |
fba45db2 | 224 | do_freeargv (void *arg) |
7a292a7a | 225 | { |
c5aa993b | 226 | freeargv ((char **) arg); |
7a292a7a SS |
227 | } |
228 | ||
229 | struct cleanup * | |
fba45db2 | 230 | make_cleanup_freeargv (char **arg) |
7a292a7a SS |
231 | { |
232 | return make_my_cleanup (&cleanup_chain, do_freeargv, arg); | |
233 | } | |
234 | ||
5c65bbb6 AC |
235 | static void |
236 | do_bfd_close_cleanup (void *arg) | |
237 | { | |
238 | bfd_close (arg); | |
239 | } | |
240 | ||
241 | struct cleanup * | |
242 | make_cleanup_bfd_close (bfd *abfd) | |
243 | { | |
244 | return make_cleanup (do_bfd_close_cleanup, abfd); | |
245 | } | |
246 | ||
f5ff8c83 AC |
247 | static void |
248 | do_close_cleanup (void *arg) | |
249 | { | |
f042532c AC |
250 | int *fd = arg; |
251 | close (*fd); | |
252 | xfree (fd); | |
f5ff8c83 AC |
253 | } |
254 | ||
255 | struct cleanup * | |
256 | make_cleanup_close (int fd) | |
257 | { | |
f042532c AC |
258 | int *saved_fd = xmalloc (sizeof (fd)); |
259 | *saved_fd = fd; | |
260 | return make_cleanup (do_close_cleanup, saved_fd); | |
f5ff8c83 AC |
261 | } |
262 | ||
11cf8741 | 263 | static void |
d9fcf2fb | 264 | do_ui_file_delete (void *arg) |
11cf8741 | 265 | { |
d9fcf2fb | 266 | ui_file_delete (arg); |
11cf8741 JM |
267 | } |
268 | ||
269 | struct cleanup * | |
d9fcf2fb | 270 | make_cleanup_ui_file_delete (struct ui_file *arg) |
11cf8741 | 271 | { |
d9fcf2fb | 272 | return make_my_cleanup (&cleanup_chain, do_ui_file_delete, arg); |
11cf8741 JM |
273 | } |
274 | ||
7b90c3f9 JB |
275 | static void |
276 | do_free_section_addr_info (void *arg) | |
277 | { | |
278 | free_section_addr_info (arg); | |
279 | } | |
280 | ||
281 | struct cleanup * | |
282 | make_cleanup_free_section_addr_info (struct section_addr_info *addrs) | |
283 | { | |
284 | return make_my_cleanup (&cleanup_chain, do_free_section_addr_info, addrs); | |
285 | } | |
286 | ||
287 | ||
c906108c | 288 | struct cleanup * |
e4005526 AC |
289 | make_my_cleanup (struct cleanup **pmy_chain, make_cleanup_ftype *function, |
290 | void *arg) | |
c906108c | 291 | { |
52f0bd74 | 292 | struct cleanup *new |
8731e58e | 293 | = (struct cleanup *) xmalloc (sizeof (struct cleanup)); |
52f0bd74 | 294 | struct cleanup *old_chain = *pmy_chain; |
c906108c SS |
295 | |
296 | new->next = *pmy_chain; | |
297 | new->function = function; | |
298 | new->arg = arg; | |
299 | *pmy_chain = new; | |
300 | ||
301 | return old_chain; | |
302 | } | |
303 | ||
304 | /* Discard cleanups and do the actions they describe | |
305 | until we get back to the point OLD_CHAIN in the cleanup_chain. */ | |
306 | ||
307 | void | |
aa1ee363 | 308 | do_cleanups (struct cleanup *old_chain) |
c906108c | 309 | { |
c5aa993b | 310 | do_my_cleanups (&cleanup_chain, old_chain); |
c906108c SS |
311 | } |
312 | ||
313 | void | |
aa1ee363 | 314 | do_final_cleanups (struct cleanup *old_chain) |
c906108c | 315 | { |
c5aa993b | 316 | do_my_cleanups (&final_cleanup_chain, old_chain); |
c906108c SS |
317 | } |
318 | ||
43ff13b4 | 319 | void |
aa1ee363 | 320 | do_exec_cleanups (struct cleanup *old_chain) |
43ff13b4 | 321 | { |
c5aa993b | 322 | do_my_cleanups (&exec_cleanup_chain, old_chain); |
43ff13b4 JM |
323 | } |
324 | ||
6426a772 | 325 | void |
aa1ee363 | 326 | do_exec_error_cleanups (struct cleanup *old_chain) |
6426a772 JM |
327 | { |
328 | do_my_cleanups (&exec_error_cleanup_chain, old_chain); | |
329 | } | |
330 | ||
e42c9534 | 331 | static void |
aa1ee363 AC |
332 | do_my_cleanups (struct cleanup **pmy_chain, |
333 | struct cleanup *old_chain) | |
c906108c | 334 | { |
52f0bd74 | 335 | struct cleanup *ptr; |
c906108c SS |
336 | while ((ptr = *pmy_chain) != old_chain) |
337 | { | |
338 | *pmy_chain = ptr->next; /* Do this first incase recursion */ | |
339 | (*ptr->function) (ptr->arg); | |
b8c9b27d | 340 | xfree (ptr); |
c906108c SS |
341 | } |
342 | } | |
343 | ||
344 | /* Discard cleanups, not doing the actions they describe, | |
345 | until we get back to the point OLD_CHAIN in the cleanup_chain. */ | |
346 | ||
347 | void | |
aa1ee363 | 348 | discard_cleanups (struct cleanup *old_chain) |
c906108c | 349 | { |
c5aa993b | 350 | discard_my_cleanups (&cleanup_chain, old_chain); |
c906108c SS |
351 | } |
352 | ||
353 | void | |
aa1ee363 | 354 | discard_final_cleanups (struct cleanup *old_chain) |
c906108c | 355 | { |
c5aa993b | 356 | discard_my_cleanups (&final_cleanup_chain, old_chain); |
c906108c SS |
357 | } |
358 | ||
6426a772 | 359 | void |
aa1ee363 | 360 | discard_exec_error_cleanups (struct cleanup *old_chain) |
6426a772 JM |
361 | { |
362 | discard_my_cleanups (&exec_error_cleanup_chain, old_chain); | |
363 | } | |
364 | ||
c906108c | 365 | void |
aa1ee363 AC |
366 | discard_my_cleanups (struct cleanup **pmy_chain, |
367 | struct cleanup *old_chain) | |
c906108c | 368 | { |
52f0bd74 | 369 | struct cleanup *ptr; |
c906108c SS |
370 | while ((ptr = *pmy_chain) != old_chain) |
371 | { | |
372 | *pmy_chain = ptr->next; | |
b8c9b27d | 373 | xfree (ptr); |
c906108c SS |
374 | } |
375 | } | |
376 | ||
377 | /* Set the cleanup_chain to 0, and return the old cleanup chain. */ | |
378 | struct cleanup * | |
fba45db2 | 379 | save_cleanups (void) |
c906108c | 380 | { |
c5aa993b | 381 | return save_my_cleanups (&cleanup_chain); |
c906108c SS |
382 | } |
383 | ||
384 | struct cleanup * | |
fba45db2 | 385 | save_final_cleanups (void) |
c906108c | 386 | { |
c5aa993b | 387 | return save_my_cleanups (&final_cleanup_chain); |
c906108c SS |
388 | } |
389 | ||
390 | struct cleanup * | |
fba45db2 | 391 | save_my_cleanups (struct cleanup **pmy_chain) |
c906108c SS |
392 | { |
393 | struct cleanup *old_chain = *pmy_chain; | |
394 | ||
395 | *pmy_chain = 0; | |
396 | return old_chain; | |
397 | } | |
398 | ||
399 | /* Restore the cleanup chain from a previously saved chain. */ | |
400 | void | |
fba45db2 | 401 | restore_cleanups (struct cleanup *chain) |
c906108c | 402 | { |
c5aa993b | 403 | restore_my_cleanups (&cleanup_chain, chain); |
c906108c SS |
404 | } |
405 | ||
406 | void | |
fba45db2 | 407 | restore_final_cleanups (struct cleanup *chain) |
c906108c | 408 | { |
c5aa993b | 409 | restore_my_cleanups (&final_cleanup_chain, chain); |
c906108c SS |
410 | } |
411 | ||
412 | void | |
fba45db2 | 413 | restore_my_cleanups (struct cleanup **pmy_chain, struct cleanup *chain) |
c906108c SS |
414 | { |
415 | *pmy_chain = chain; | |
416 | } | |
417 | ||
418 | /* This function is useful for cleanups. | |
419 | Do | |
420 | ||
c5aa993b JM |
421 | foo = xmalloc (...); |
422 | old_chain = make_cleanup (free_current_contents, &foo); | |
c906108c SS |
423 | |
424 | to arrange to free the object thus allocated. */ | |
425 | ||
426 | void | |
2f9429ae | 427 | free_current_contents (void *ptr) |
c906108c | 428 | { |
2f9429ae | 429 | void **location = ptr; |
e2f9c474 | 430 | if (location == NULL) |
8e65ff28 | 431 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 432 | _("free_current_contents: NULL pointer")); |
2f9429ae | 433 | if (*location != NULL) |
e2f9c474 | 434 | { |
b8c9b27d | 435 | xfree (*location); |
e2f9c474 AC |
436 | *location = NULL; |
437 | } | |
c906108c SS |
438 | } |
439 | ||
440 | /* Provide a known function that does nothing, to use as a base for | |
441 | for a possibly long chain of cleanups. This is useful where we | |
442 | use the cleanup chain for handling normal cleanups as well as dealing | |
443 | with cleanups that need to be done as a result of a call to error(). | |
444 | In such cases, we may not be certain where the first cleanup is, unless | |
445 | we have a do-nothing one to always use as the base. */ | |
446 | ||
c906108c | 447 | void |
e4005526 | 448 | null_cleanup (void *arg) |
c906108c SS |
449 | { |
450 | } | |
451 | ||
74f832da | 452 | /* Add a continuation to the continuation list, the global list |
c2d11a7d | 453 | cmd_continuation. The new continuation will be added at the front.*/ |
43ff13b4 | 454 | void |
74f832da KB |
455 | add_continuation (void (*continuation_hook) (struct continuation_arg *), |
456 | struct continuation_arg *arg_list) | |
43ff13b4 | 457 | { |
c5aa993b | 458 | struct continuation *continuation_ptr; |
43ff13b4 | 459 | |
8731e58e AC |
460 | continuation_ptr = |
461 | (struct continuation *) xmalloc (sizeof (struct continuation)); | |
c5aa993b JM |
462 | continuation_ptr->continuation_hook = continuation_hook; |
463 | continuation_ptr->arg_list = arg_list; | |
464 | continuation_ptr->next = cmd_continuation; | |
465 | cmd_continuation = continuation_ptr; | |
43ff13b4 JM |
466 | } |
467 | ||
468 | /* Walk down the cmd_continuation list, and execute all the | |
c2d11a7d JM |
469 | continuations. There is a problem though. In some cases new |
470 | continuations may be added while we are in the middle of this | |
471 | loop. If this happens they will be added in the front, and done | |
472 | before we have a chance of exhausting those that were already | |
473 | there. We need to then save the beginning of the list in a pointer | |
474 | and do the continuations from there on, instead of using the | |
0a4a0819 | 475 | global beginning of list as our iteration pointer. */ |
c5aa993b | 476 | void |
fba45db2 | 477 | do_all_continuations (void) |
c2d11a7d JM |
478 | { |
479 | struct continuation *continuation_ptr; | |
480 | struct continuation *saved_continuation; | |
481 | ||
482 | /* Copy the list header into another pointer, and set the global | |
483 | list header to null, so that the global list can change as a side | |
484 | effect of invoking the continuations and the processing of | |
485 | the preexisting continuations will not be affected. */ | |
486 | continuation_ptr = cmd_continuation; | |
487 | cmd_continuation = NULL; | |
488 | ||
0a4a0819 | 489 | /* Work now on the list we have set aside. */ |
c2d11a7d | 490 | while (continuation_ptr) |
8731e58e AC |
491 | { |
492 | (continuation_ptr->continuation_hook) (continuation_ptr->arg_list); | |
493 | saved_continuation = continuation_ptr; | |
494 | continuation_ptr = continuation_ptr->next; | |
495 | xfree (saved_continuation); | |
496 | } | |
c2d11a7d JM |
497 | } |
498 | ||
499 | /* Walk down the cmd_continuation list, and get rid of all the | |
500 | continuations. */ | |
501 | void | |
fba45db2 | 502 | discard_all_continuations (void) |
43ff13b4 | 503 | { |
c5aa993b | 504 | struct continuation *continuation_ptr; |
43ff13b4 | 505 | |
c5aa993b JM |
506 | while (cmd_continuation) |
507 | { | |
c5aa993b JM |
508 | continuation_ptr = cmd_continuation; |
509 | cmd_continuation = continuation_ptr->next; | |
b8c9b27d | 510 | xfree (continuation_ptr); |
c5aa993b | 511 | } |
43ff13b4 | 512 | } |
c2c6d25f | 513 | |
57e687d9 | 514 | /* Add a continuation to the continuation list, the global list |
0a4a0819 MS |
515 | intermediate_continuation. The new continuation will be added at |
516 | the front. */ | |
c2d11a7d | 517 | void |
74f832da KB |
518 | add_intermediate_continuation (void (*continuation_hook) |
519 | (struct continuation_arg *), | |
520 | struct continuation_arg *arg_list) | |
c2d11a7d JM |
521 | { |
522 | struct continuation *continuation_ptr; | |
523 | ||
8731e58e AC |
524 | continuation_ptr = |
525 | (struct continuation *) xmalloc (sizeof (struct continuation)); | |
c2d11a7d JM |
526 | continuation_ptr->continuation_hook = continuation_hook; |
527 | continuation_ptr->arg_list = arg_list; | |
528 | continuation_ptr->next = intermediate_continuation; | |
529 | intermediate_continuation = continuation_ptr; | |
530 | } | |
531 | ||
532 | /* Walk down the cmd_continuation list, and execute all the | |
533 | continuations. There is a problem though. In some cases new | |
534 | continuations may be added while we are in the middle of this | |
535 | loop. If this happens they will be added in the front, and done | |
536 | before we have a chance of exhausting those that were already | |
537 | there. We need to then save the beginning of the list in a pointer | |
538 | and do the continuations from there on, instead of using the | |
539 | global beginning of list as our iteration pointer.*/ | |
540 | void | |
fba45db2 | 541 | do_all_intermediate_continuations (void) |
c2d11a7d JM |
542 | { |
543 | struct continuation *continuation_ptr; | |
544 | struct continuation *saved_continuation; | |
545 | ||
546 | /* Copy the list header into another pointer, and set the global | |
547 | list header to null, so that the global list can change as a side | |
548 | effect of invoking the continuations and the processing of | |
549 | the preexisting continuations will not be affected. */ | |
550 | continuation_ptr = intermediate_continuation; | |
551 | intermediate_continuation = NULL; | |
552 | ||
0a4a0819 | 553 | /* Work now on the list we have set aside. */ |
c2d11a7d | 554 | while (continuation_ptr) |
8731e58e AC |
555 | { |
556 | (continuation_ptr->continuation_hook) (continuation_ptr->arg_list); | |
557 | saved_continuation = continuation_ptr; | |
558 | continuation_ptr = continuation_ptr->next; | |
559 | xfree (saved_continuation); | |
560 | } | |
c2d11a7d JM |
561 | } |
562 | ||
c2c6d25f JM |
563 | /* Walk down the cmd_continuation list, and get rid of all the |
564 | continuations. */ | |
565 | void | |
fba45db2 | 566 | discard_all_intermediate_continuations (void) |
c2c6d25f JM |
567 | { |
568 | struct continuation *continuation_ptr; | |
569 | ||
c2d11a7d | 570 | while (intermediate_continuation) |
c2c6d25f | 571 | { |
c2d11a7d JM |
572 | continuation_ptr = intermediate_continuation; |
573 | intermediate_continuation = continuation_ptr->next; | |
b8c9b27d | 574 | xfree (continuation_ptr); |
c2c6d25f JM |
575 | } |
576 | } | |
c906108c | 577 | \f |
c5aa993b | 578 | |
8731e58e | 579 | |
f5a96129 AC |
580 | /* Print a warning message. The first argument STRING is the warning |
581 | message, used as an fprintf format string, the second is the | |
582 | va_list of arguments for that string. A warning is unfiltered (not | |
583 | paginated) so that the user does not need to page through each | |
584 | screen full of warnings when there are lots of them. */ | |
c906108c SS |
585 | |
586 | void | |
f5a96129 | 587 | vwarning (const char *string, va_list args) |
c906108c | 588 | { |
9a4105ab AC |
589 | if (deprecated_warning_hook) |
590 | (*deprecated_warning_hook) (string, args); | |
f5a96129 AC |
591 | else |
592 | { | |
593 | target_terminal_ours (); | |
594 | wrap_here (""); /* Force out any buffered output */ | |
595 | gdb_flush (gdb_stdout); | |
596 | if (warning_pre_print) | |
306d9ac5 | 597 | fputs_unfiltered (warning_pre_print, gdb_stderr); |
f5a96129 AC |
598 | vfprintf_unfiltered (gdb_stderr, string, args); |
599 | fprintf_unfiltered (gdb_stderr, "\n"); | |
600 | va_end (args); | |
601 | } | |
c906108c SS |
602 | } |
603 | ||
604 | /* Print a warning message. | |
605 | The first argument STRING is the warning message, used as a fprintf string, | |
606 | and the remaining args are passed as arguments to it. | |
607 | The primary difference between warnings and errors is that a warning | |
608 | does not force the return to command level. */ | |
609 | ||
c906108c | 610 | void |
8731e58e | 611 | warning (const char *string, ...) |
c906108c SS |
612 | { |
613 | va_list args; | |
c906108c | 614 | va_start (args, string); |
f5a96129 AC |
615 | vwarning (string, args); |
616 | va_end (args); | |
c906108c SS |
617 | } |
618 | ||
c906108c SS |
619 | /* Print an error message and return to command level. |
620 | The first argument STRING is the error message, used as a fprintf string, | |
621 | and the remaining args are passed as arguments to it. */ | |
622 | ||
4ce44c66 JM |
623 | NORETURN void |
624 | verror (const char *string, va_list args) | |
625 | { | |
6b1b7650 | 626 | throw_verror (GENERIC_ERROR, string, args); |
4ce44c66 JM |
627 | } |
628 | ||
c906108c | 629 | NORETURN void |
8731e58e | 630 | error (const char *string, ...) |
c906108c SS |
631 | { |
632 | va_list args; | |
c906108c | 633 | va_start (args, string); |
6b1b7650 | 634 | throw_verror (GENERIC_ERROR, string, args); |
4ce44c66 | 635 | va_end (args); |
c906108c SS |
636 | } |
637 | ||
d75e3c94 JJ |
638 | /* Print an error message and quit. |
639 | The first argument STRING is the error message, used as a fprintf string, | |
640 | and the remaining args are passed as arguments to it. */ | |
641 | ||
642 | NORETURN void | |
643 | vfatal (const char *string, va_list args) | |
644 | { | |
6b1b7650 | 645 | throw_vfatal (string, args); |
d75e3c94 JJ |
646 | } |
647 | ||
648 | NORETURN void | |
649 | fatal (const char *string, ...) | |
650 | { | |
651 | va_list args; | |
652 | va_start (args, string); | |
6b1b7650 | 653 | throw_vfatal (string, args); |
d75e3c94 JJ |
654 | va_end (args); |
655 | } | |
656 | ||
d75e3c94 JJ |
657 | NORETURN void |
658 | error_stream (struct ui_file *stream) | |
2acceee2 | 659 | { |
4ce44c66 | 660 | long len; |
6b1b7650 AC |
661 | char *message = ui_file_xstrdup (stream, &len); |
662 | make_cleanup (xfree, message); | |
8a3fe4f8 | 663 | error (("%s"), message); |
2acceee2 | 664 | } |
c906108c | 665 | |
dec43320 AC |
666 | /* Print a message reporting an internal error/warning. Ask the user |
667 | if they want to continue, dump core, or just exit. Return | |
668 | something to indicate a quit. */ | |
c906108c | 669 | |
dec43320 | 670 | struct internal_problem |
c906108c | 671 | { |
dec43320 AC |
672 | const char *name; |
673 | /* FIXME: cagney/2002-08-15: There should be ``maint set/show'' | |
674 | commands available for controlling these variables. */ | |
675 | enum auto_boolean should_quit; | |
676 | enum auto_boolean should_dump_core; | |
677 | }; | |
678 | ||
679 | /* Report a problem, internal to GDB, to the user. Once the problem | |
680 | has been reported, and assuming GDB didn't quit, the caller can | |
681 | either allow execution to resume or throw an error. */ | |
682 | ||
bee0189a | 683 | static void ATTR_FORMAT (printf, 4, 0) |
dec43320 | 684 | internal_vproblem (struct internal_problem *problem, |
8731e58e | 685 | const char *file, int line, const char *fmt, va_list ap) |
dec43320 | 686 | { |
dec43320 | 687 | static int dejavu; |
375fc983 | 688 | int quit_p; |
7be570e7 | 689 | int dump_core_p; |
714b1282 | 690 | char *reason; |
c906108c | 691 | |
dec43320 | 692 | /* Don't allow infinite error/warning recursion. */ |
714b1282 AC |
693 | { |
694 | static char msg[] = "Recursive internal problem.\n"; | |
695 | switch (dejavu) | |
696 | { | |
697 | case 0: | |
698 | dejavu = 1; | |
699 | break; | |
700 | case 1: | |
701 | dejavu = 2; | |
702 | fputs_unfiltered (msg, gdb_stderr); | |
703 | abort (); /* NOTE: GDB has only three calls to abort(). */ | |
704 | default: | |
705 | dejavu = 3; | |
706 | write (STDERR_FILENO, msg, sizeof (msg)); | |
707 | exit (1); | |
708 | } | |
709 | } | |
c906108c | 710 | |
dec43320 | 711 | /* Try to get the message out and at the start of a new line. */ |
4261bedc | 712 | target_terminal_ours (); |
dec43320 AC |
713 | begin_line (); |
714 | ||
714b1282 AC |
715 | /* Create a string containing the full error/warning message. Need |
716 | to call query with this full string, as otherwize the reason | |
717 | (error/warning) and question become separated. Format using a | |
718 | style similar to a compiler error message. Include extra detail | |
719 | so that the user knows that they are living on the edge. */ | |
720 | { | |
721 | char *msg; | |
e623b504 | 722 | msg = xstrvprintf (fmt, ap); |
b435e160 | 723 | reason = xstrprintf ("\ |
714b1282 AC |
724 | %s:%d: %s: %s\n\ |
725 | A problem internal to GDB has been detected,\n\ | |
726 | further debugging may prove unreliable.", file, line, problem->name, msg); | |
727 | xfree (msg); | |
728 | make_cleanup (xfree, reason); | |
729 | } | |
7be570e7 | 730 | |
dec43320 AC |
731 | switch (problem->should_quit) |
732 | { | |
733 | case AUTO_BOOLEAN_AUTO: | |
734 | /* Default (yes/batch case) is to quit GDB. When in batch mode | |
8731e58e AC |
735 | this lessens the likelhood of GDB going into an infinate |
736 | loop. */ | |
e2e0b3e5 | 737 | quit_p = query (_("%s\nQuit this debugging session? "), reason); |
dec43320 AC |
738 | break; |
739 | case AUTO_BOOLEAN_TRUE: | |
740 | quit_p = 1; | |
741 | break; | |
742 | case AUTO_BOOLEAN_FALSE: | |
743 | quit_p = 0; | |
744 | break; | |
745 | default: | |
e2e0b3e5 | 746 | internal_error (__FILE__, __LINE__, _("bad switch")); |
dec43320 AC |
747 | } |
748 | ||
749 | switch (problem->should_dump_core) | |
750 | { | |
751 | case AUTO_BOOLEAN_AUTO: | |
752 | /* Default (yes/batch case) is to dump core. This leaves a GDB | |
8731e58e AC |
753 | `dropping' so that it is easier to see that something went |
754 | wrong in GDB. */ | |
e2e0b3e5 | 755 | dump_core_p = query (_("%s\nCreate a core file of GDB? "), reason); |
dec43320 AC |
756 | break; |
757 | break; | |
758 | case AUTO_BOOLEAN_TRUE: | |
759 | dump_core_p = 1; | |
760 | break; | |
761 | case AUTO_BOOLEAN_FALSE: | |
762 | dump_core_p = 0; | |
763 | break; | |
764 | default: | |
e2e0b3e5 | 765 | internal_error (__FILE__, __LINE__, _("bad switch")); |
dec43320 | 766 | } |
7be570e7 | 767 | |
375fc983 | 768 | if (quit_p) |
7be570e7 JM |
769 | { |
770 | if (dump_core_p) | |
8731e58e | 771 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
375fc983 AC |
772 | else |
773 | exit (1); | |
7be570e7 JM |
774 | } |
775 | else | |
776 | { | |
777 | if (dump_core_p) | |
375fc983 | 778 | { |
9b265ec2 | 779 | #ifdef HAVE_WORKING_FORK |
375fc983 | 780 | if (fork () == 0) |
8731e58e | 781 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
9b265ec2 | 782 | #endif |
375fc983 | 783 | } |
7be570e7 | 784 | } |
96baa820 JM |
785 | |
786 | dejavu = 0; | |
dec43320 AC |
787 | } |
788 | ||
789 | static struct internal_problem internal_error_problem = { | |
790 | "internal-error", AUTO_BOOLEAN_AUTO, AUTO_BOOLEAN_AUTO | |
791 | }; | |
792 | ||
793 | NORETURN void | |
8731e58e | 794 | internal_verror (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
795 | { |
796 | internal_vproblem (&internal_error_problem, file, line, fmt, ap); | |
315a522e | 797 | deprecated_throw_reason (RETURN_ERROR); |
c906108c SS |
798 | } |
799 | ||
4ce44c66 | 800 | NORETURN void |
8e65ff28 | 801 | internal_error (const char *file, int line, const char *string, ...) |
4ce44c66 JM |
802 | { |
803 | va_list ap; | |
804 | va_start (ap, string); | |
8e65ff28 | 805 | internal_verror (file, line, string, ap); |
4ce44c66 JM |
806 | va_end (ap); |
807 | } | |
808 | ||
dec43320 | 809 | static struct internal_problem internal_warning_problem = { |
d833db3b | 810 | "internal-warning", AUTO_BOOLEAN_AUTO, AUTO_BOOLEAN_AUTO |
dec43320 AC |
811 | }; |
812 | ||
813 | void | |
8731e58e | 814 | internal_vwarning (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
815 | { |
816 | internal_vproblem (&internal_warning_problem, file, line, fmt, ap); | |
817 | } | |
818 | ||
819 | void | |
820 | internal_warning (const char *file, int line, const char *string, ...) | |
821 | { | |
822 | va_list ap; | |
823 | va_start (ap, string); | |
824 | internal_vwarning (file, line, string, ap); | |
825 | va_end (ap); | |
826 | } | |
827 | ||
c906108c SS |
828 | /* Print the system error message for errno, and also mention STRING |
829 | as the file name for which the error was encountered. | |
830 | Then return to command level. */ | |
831 | ||
832 | NORETURN void | |
6972bc8b | 833 | perror_with_name (const char *string) |
c906108c SS |
834 | { |
835 | char *err; | |
836 | char *combined; | |
837 | ||
838 | err = safe_strerror (errno); | |
839 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); | |
840 | strcpy (combined, string); | |
841 | strcat (combined, ": "); | |
842 | strcat (combined, err); | |
843 | ||
844 | /* I understand setting these is a matter of taste. Still, some people | |
845 | may clear errno but not know about bfd_error. Doing this here is not | |
846 | unreasonable. */ | |
847 | bfd_set_error (bfd_error_no_error); | |
848 | errno = 0; | |
849 | ||
8a3fe4f8 | 850 | error (_("%s."), combined); |
c906108c SS |
851 | } |
852 | ||
853 | /* Print the system error message for ERRCODE, and also mention STRING | |
854 | as the file name for which the error was encountered. */ | |
855 | ||
856 | void | |
6972bc8b | 857 | print_sys_errmsg (const char *string, int errcode) |
c906108c SS |
858 | { |
859 | char *err; | |
860 | char *combined; | |
861 | ||
862 | err = safe_strerror (errcode); | |
863 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); | |
864 | strcpy (combined, string); | |
865 | strcat (combined, ": "); | |
866 | strcat (combined, err); | |
867 | ||
868 | /* We want anything which was printed on stdout to come out first, before | |
869 | this message. */ | |
870 | gdb_flush (gdb_stdout); | |
871 | fprintf_unfiltered (gdb_stderr, "%s.\n", combined); | |
872 | } | |
873 | ||
874 | /* Control C eventually causes this to be called, at a convenient time. */ | |
875 | ||
876 | void | |
fba45db2 | 877 | quit (void) |
c906108c | 878 | { |
7be570e7 JM |
879 | #ifdef __MSDOS__ |
880 | /* No steenking SIGINT will ever be coming our way when the | |
881 | program is resumed. Don't lie. */ | |
e06e2353 | 882 | fatal ("Quit"); |
7be570e7 | 883 | #else |
c906108c | 884 | if (job_control |
8731e58e AC |
885 | /* If there is no terminal switching for this target, then we can't |
886 | possibly get screwed by the lack of job control. */ | |
c906108c | 887 | || current_target.to_terminal_ours == NULL) |
e06e2353 | 888 | fatal ("Quit"); |
c906108c | 889 | else |
e06e2353 | 890 | fatal ("Quit (expect signal SIGINT when the program is resumed)"); |
7be570e7 | 891 | #endif |
c906108c SS |
892 | } |
893 | ||
c906108c | 894 | \f |
c906108c SS |
895 | /* Called when a memory allocation fails, with the number of bytes of |
896 | memory requested in SIZE. */ | |
897 | ||
898 | NORETURN void | |
fba45db2 | 899 | nomem (long size) |
c906108c SS |
900 | { |
901 | if (size > 0) | |
902 | { | |
8e65ff28 | 903 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 904 | _("virtual memory exhausted: can't allocate %ld bytes."), |
8731e58e | 905 | size); |
c906108c SS |
906 | } |
907 | else | |
908 | { | |
e2e0b3e5 | 909 | internal_error (__FILE__, __LINE__, _("virtual memory exhausted.")); |
c906108c SS |
910 | } |
911 | } | |
912 | ||
c0e61796 AC |
913 | /* The xmalloc() (libiberty.h) family of memory management routines. |
914 | ||
915 | These are like the ISO-C malloc() family except that they implement | |
916 | consistent semantics and guard against typical memory management | |
7936743b | 917 | problems. */ |
c0e61796 AC |
918 | |
919 | /* NOTE: These are declared using PTR to ensure consistency with | |
920 | "libiberty.h". xfree() is GDB local. */ | |
921 | ||
8dbb1c65 | 922 | PTR /* OK: PTR */ |
c0e61796 AC |
923 | xmalloc (size_t size) |
924 | { | |
7936743b AC |
925 | void *val; |
926 | ||
927 | /* See libiberty/xmalloc.c. This function need's to match that's | |
928 | semantics. It never returns NULL. */ | |
929 | if (size == 0) | |
930 | size = 1; | |
931 | ||
932 | val = malloc (size); /* OK: malloc */ | |
933 | if (val == NULL) | |
934 | nomem (size); | |
935 | ||
936 | return (val); | |
c0e61796 | 937 | } |
c906108c | 938 | |
5b90c7b5 AC |
939 | void * |
940 | xzalloc (size_t size) | |
941 | { | |
942 | return xcalloc (1, size); | |
943 | } | |
944 | ||
8dbb1c65 AC |
945 | PTR /* OK: PTR */ |
946 | xrealloc (PTR ptr, size_t size) /* OK: PTR */ | |
c906108c | 947 | { |
0efffb96 AC |
948 | void *val; |
949 | ||
950 | /* See libiberty/xmalloc.c. This function need's to match that's | |
951 | semantics. It never returns NULL. */ | |
952 | if (size == 0) | |
953 | size = 1; | |
954 | ||
955 | if (ptr != NULL) | |
956 | val = realloc (ptr, size); /* OK: realloc */ | |
957 | else | |
958 | val = malloc (size); /* OK: malloc */ | |
959 | if (val == NULL) | |
960 | nomem (size); | |
961 | ||
962 | return (val); | |
c906108c | 963 | } |
b8c9b27d | 964 | |
8dbb1c65 | 965 | PTR /* OK: PTR */ |
c0e61796 AC |
966 | xcalloc (size_t number, size_t size) |
967 | { | |
aa2ee5f6 AC |
968 | void *mem; |
969 | ||
970 | /* See libiberty/xmalloc.c. This function need's to match that's | |
971 | semantics. It never returns NULL. */ | |
972 | if (number == 0 || size == 0) | |
973 | { | |
974 | number = 1; | |
975 | size = 1; | |
976 | } | |
977 | ||
978 | mem = calloc (number, size); /* OK: xcalloc */ | |
979 | if (mem == NULL) | |
980 | nomem (number * size); | |
981 | ||
982 | return mem; | |
c0e61796 | 983 | } |
b8c9b27d KB |
984 | |
985 | void | |
986 | xfree (void *ptr) | |
987 | { | |
2dc74dc1 AC |
988 | if (ptr != NULL) |
989 | free (ptr); /* OK: free */ | |
b8c9b27d | 990 | } |
c906108c | 991 | \f |
c5aa993b | 992 | |
76995688 AC |
993 | /* Like asprintf/vasprintf but get an internal_error if the call |
994 | fails. */ | |
995 | ||
9ebf4acf AC |
996 | char * |
997 | xstrprintf (const char *format, ...) | |
998 | { | |
999 | char *ret; | |
1000 | va_list args; | |
1001 | va_start (args, format); | |
e623b504 | 1002 | ret = xstrvprintf (format, args); |
9ebf4acf AC |
1003 | va_end (args); |
1004 | return ret; | |
1005 | } | |
1006 | ||
76995688 AC |
1007 | void |
1008 | xasprintf (char **ret, const char *format, ...) | |
1009 | { | |
1010 | va_list args; | |
1011 | va_start (args, format); | |
e623b504 | 1012 | (*ret) = xstrvprintf (format, args); |
76995688 AC |
1013 | va_end (args); |
1014 | } | |
1015 | ||
1016 | void | |
1017 | xvasprintf (char **ret, const char *format, va_list ap) | |
1018 | { | |
a552edd9 | 1019 | (*ret) = xstrvprintf (format, ap); |
76995688 AC |
1020 | } |
1021 | ||
e623b504 AC |
1022 | char * |
1023 | xstrvprintf (const char *format, va_list ap) | |
1024 | { | |
1025 | char *ret = NULL; | |
1026 | int status = vasprintf (&ret, format, ap); | |
46e9880c DJ |
1027 | /* NULL is returned when there was a memory allocation problem, or |
1028 | any other error (for instance, a bad format string). A negative | |
1029 | status (the printed length) with a non-NULL buffer should never | |
1030 | happen, but just to be sure. */ | |
1031 | if (ret == NULL || status < 0) | |
1032 | internal_error (__FILE__, __LINE__, _("vasprintf call failed")); | |
e623b504 AC |
1033 | return ret; |
1034 | } | |
76995688 | 1035 | |
bde2058d MK |
1036 | int |
1037 | xsnprintf (char *str, size_t size, const char *format, ...) | |
1038 | { | |
1039 | va_list args; | |
1040 | int ret; | |
1041 | ||
1042 | va_start (args, format); | |
1043 | ret = vsnprintf (str, size, format, args); | |
1044 | gdb_assert (ret < size); | |
1045 | va_end (args); | |
1046 | ||
1047 | return ret; | |
1048 | } | |
1049 | ||
c906108c SS |
1050 | /* My replacement for the read system call. |
1051 | Used like `read' but keeps going if `read' returns too soon. */ | |
1052 | ||
1053 | int | |
fba45db2 | 1054 | myread (int desc, char *addr, int len) |
c906108c | 1055 | { |
52f0bd74 | 1056 | int val; |
c906108c SS |
1057 | int orglen = len; |
1058 | ||
1059 | while (len > 0) | |
1060 | { | |
1061 | val = read (desc, addr, len); | |
1062 | if (val < 0) | |
1063 | return val; | |
1064 | if (val == 0) | |
1065 | return orglen - len; | |
1066 | len -= val; | |
1067 | addr += val; | |
1068 | } | |
1069 | return orglen; | |
1070 | } | |
1071 | \f | |
1072 | /* Make a copy of the string at PTR with SIZE characters | |
1073 | (and add a null character at the end in the copy). | |
1074 | Uses malloc to get the space. Returns the address of the copy. */ | |
1075 | ||
1076 | char * | |
5565b556 | 1077 | savestring (const char *ptr, size_t size) |
c906108c | 1078 | { |
52f0bd74 | 1079 | char *p = (char *) xmalloc (size + 1); |
c906108c SS |
1080 | memcpy (p, ptr, size); |
1081 | p[size] = 0; | |
1082 | return p; | |
1083 | } | |
1084 | ||
c906108c | 1085 | void |
aa1ee363 | 1086 | print_spaces (int n, struct ui_file *file) |
c906108c | 1087 | { |
392a587b | 1088 | fputs_unfiltered (n_spaces (n), file); |
c906108c SS |
1089 | } |
1090 | ||
1091 | /* Print a host address. */ | |
1092 | ||
1093 | void | |
ac16bf07 | 1094 | gdb_print_host_address (const void *addr, struct ui_file *stream) |
c906108c SS |
1095 | { |
1096 | ||
1097 | /* We could use the %p conversion specifier to fprintf if we had any | |
1098 | way of knowing whether this host supports it. But the following | |
1099 | should work on the Alpha and on 32 bit machines. */ | |
1100 | ||
c5aa993b | 1101 | fprintf_filtered (stream, "0x%lx", (unsigned long) addr); |
c906108c | 1102 | } |
c906108c | 1103 | \f |
c5aa993b | 1104 | |
981c7f5a | 1105 | /* This function supports the query, nquery, and yquery functions. |
cbdeadca | 1106 | Ask user a y-or-n question and return 0 if answer is no, 1 if |
981c7f5a DJ |
1107 | answer is yes, or default the answer to the specified default |
1108 | (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a | |
1109 | default answer, or '\0' for no default. | |
cbdeadca JJ |
1110 | CTLSTR is the control string and should end in "? ". It should |
1111 | not say how to answer, because we do that. | |
1112 | ARGS are the arguments passed along with the CTLSTR argument to | |
1113 | printf. */ | |
1114 | ||
bee0189a | 1115 | static int ATTR_FORMAT (printf, 1, 0) |
cbdeadca JJ |
1116 | defaulted_query (const char *ctlstr, const char defchar, va_list args) |
1117 | { | |
1118 | int answer; | |
1119 | int ans2; | |
1120 | int retval; | |
1121 | int def_value; | |
1122 | char def_answer, not_def_answer; | |
981c7f5a | 1123 | char *y_string, *n_string, *question; |
cbdeadca JJ |
1124 | |
1125 | /* Set up according to which answer is the default. */ | |
981c7f5a DJ |
1126 | if (defchar == '\0') |
1127 | { | |
1128 | def_value = 1; | |
1129 | def_answer = 'Y'; | |
1130 | not_def_answer = 'N'; | |
1131 | y_string = "y"; | |
1132 | n_string = "n"; | |
1133 | } | |
1134 | else if (defchar == 'y') | |
cbdeadca JJ |
1135 | { |
1136 | def_value = 1; | |
1137 | def_answer = 'Y'; | |
1138 | not_def_answer = 'N'; | |
1139 | y_string = "[y]"; | |
1140 | n_string = "n"; | |
1141 | } | |
1142 | else | |
1143 | { | |
1144 | def_value = 0; | |
1145 | def_answer = 'N'; | |
1146 | not_def_answer = 'Y'; | |
1147 | y_string = "y"; | |
1148 | n_string = "[n]"; | |
1149 | } | |
1150 | ||
981c7f5a DJ |
1151 | /* Automatically answer the default value if the user did not want |
1152 | prompts. */ | |
1153 | if (! caution) | |
1154 | return def_value; | |
1155 | ||
1156 | /* If input isn't coming from the user directly, just say what | |
1157 | question we're asking, and then answer "yes" automatically. This | |
1158 | way, important error messages don't get lost when talking to GDB | |
1159 | over a pipe. */ | |
1160 | if (! input_from_terminal_p ()) | |
1161 | { | |
1162 | wrap_here (""); | |
1163 | vfprintf_filtered (gdb_stdout, ctlstr, args); | |
1164 | ||
1165 | printf_filtered (_("(%s or %s) [answered %c; input not from terminal]\n"), | |
1166 | y_string, n_string, def_answer); | |
1167 | gdb_flush (gdb_stdout); | |
1168 | ||
1169 | return def_value; | |
1170 | } | |
1171 | ||
698ba934 DJ |
1172 | /* Automatically answer the default value if input is not from the user |
1173 | directly, or if the user did not want prompts. */ | |
1174 | if (!input_from_terminal_p () || !caution) | |
1175 | return def_value; | |
1176 | ||
9a4105ab | 1177 | if (deprecated_query_hook) |
cbdeadca | 1178 | { |
9a4105ab | 1179 | return deprecated_query_hook (ctlstr, args); |
cbdeadca JJ |
1180 | } |
1181 | ||
981c7f5a DJ |
1182 | /* Format the question outside of the loop, to avoid reusing args. */ |
1183 | question = xstrvprintf (ctlstr, args); | |
1184 | ||
cbdeadca JJ |
1185 | while (1) |
1186 | { | |
1187 | wrap_here (""); /* Flush any buffered output */ | |
1188 | gdb_flush (gdb_stdout); | |
1189 | ||
1190 | if (annotation_level > 1) | |
a3f17187 | 1191 | printf_filtered (("\n\032\032pre-query\n")); |
cbdeadca | 1192 | |
981c7f5a | 1193 | fputs_filtered (question, gdb_stdout); |
a3f17187 | 1194 | printf_filtered (_("(%s or %s) "), y_string, n_string); |
cbdeadca JJ |
1195 | |
1196 | if (annotation_level > 1) | |
a3f17187 | 1197 | printf_filtered (("\n\032\032query\n")); |
cbdeadca JJ |
1198 | |
1199 | wrap_here (""); | |
1200 | gdb_flush (gdb_stdout); | |
1201 | ||
1202 | answer = fgetc (stdin); | |
1203 | clearerr (stdin); /* in case of C-d */ | |
1204 | if (answer == EOF) /* C-d */ | |
1205 | { | |
fa3fd85b | 1206 | printf_filtered ("EOF [assumed %c]\n", def_answer); |
cbdeadca JJ |
1207 | retval = def_value; |
1208 | break; | |
1209 | } | |
1210 | /* Eat rest of input line, to EOF or newline */ | |
1211 | if (answer != '\n') | |
1212 | do | |
1213 | { | |
1214 | ans2 = fgetc (stdin); | |
1215 | clearerr (stdin); | |
1216 | } | |
1217 | while (ans2 != EOF && ans2 != '\n' && ans2 != '\r'); | |
1218 | ||
1219 | if (answer >= 'a') | |
1220 | answer -= 040; | |
1221 | /* Check answer. For the non-default, the user must specify | |
1222 | the non-default explicitly. */ | |
1223 | if (answer == not_def_answer) | |
1224 | { | |
1225 | retval = !def_value; | |
1226 | break; | |
1227 | } | |
981c7f5a DJ |
1228 | /* Otherwise, if a default was specified, the user may either |
1229 | specify the required input or have it default by entering | |
1230 | nothing. */ | |
1231 | if (answer == def_answer | |
1232 | || (defchar != '\0' && | |
1233 | (answer == '\n' || answer == '\r' || answer == EOF))) | |
cbdeadca JJ |
1234 | { |
1235 | retval = def_value; | |
1236 | break; | |
1237 | } | |
1238 | /* Invalid entries are not defaulted and require another selection. */ | |
a3f17187 | 1239 | printf_filtered (_("Please answer %s or %s.\n"), |
cbdeadca JJ |
1240 | y_string, n_string); |
1241 | } | |
1242 | ||
981c7f5a | 1243 | xfree (question); |
cbdeadca | 1244 | if (annotation_level > 1) |
a3f17187 | 1245 | printf_filtered (("\n\032\032post-query\n")); |
cbdeadca JJ |
1246 | return retval; |
1247 | } | |
1248 | \f | |
1249 | ||
1250 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if | |
1251 | answer is yes, or 0 if answer is defaulted. | |
1252 | Takes three args which are given to printf to print the question. | |
1253 | The first, a control string, should end in "? ". | |
1254 | It should not say how to answer, because we do that. */ | |
1255 | ||
1256 | int | |
1257 | nquery (const char *ctlstr, ...) | |
1258 | { | |
1259 | va_list args; | |
1260 | ||
1261 | va_start (args, ctlstr); | |
1262 | return defaulted_query (ctlstr, 'n', args); | |
1263 | va_end (args); | |
1264 | } | |
1265 | ||
1266 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if | |
1267 | answer is yes, or 1 if answer is defaulted. | |
1268 | Takes three args which are given to printf to print the question. | |
1269 | The first, a control string, should end in "? ". | |
1270 | It should not say how to answer, because we do that. */ | |
1271 | ||
1272 | int | |
1273 | yquery (const char *ctlstr, ...) | |
1274 | { | |
1275 | va_list args; | |
1276 | ||
1277 | va_start (args, ctlstr); | |
1278 | return defaulted_query (ctlstr, 'y', args); | |
1279 | va_end (args); | |
1280 | } | |
1281 | ||
981c7f5a DJ |
1282 | /* Ask user a y-or-n question and return 1 iff answer is yes. |
1283 | Takes three args which are given to printf to print the question. | |
1284 | The first, a control string, should end in "? ". | |
1285 | It should not say how to answer, because we do that. */ | |
1286 | ||
1287 | int | |
1288 | query (const char *ctlstr, ...) | |
1289 | { | |
1290 | va_list args; | |
1291 | ||
1292 | va_start (args, ctlstr); | |
1293 | return defaulted_query (ctlstr, '\0', args); | |
1294 | va_end (args); | |
1295 | } | |
1296 | ||
234b45d4 KB |
1297 | /* Print an error message saying that we couldn't make sense of a |
1298 | \^mumble sequence in a string or character constant. START and END | |
1299 | indicate a substring of some larger string that contains the | |
1300 | erroneous backslash sequence, missing the initial backslash. */ | |
1301 | static NORETURN int | |
1302 | no_control_char_error (const char *start, const char *end) | |
1303 | { | |
1304 | int len = end - start; | |
1305 | char *copy = alloca (end - start + 1); | |
1306 | ||
1307 | memcpy (copy, start, len); | |
1308 | copy[len] = '\0'; | |
1309 | ||
8a3fe4f8 | 1310 | error (_("There is no control character `\\%s' in the `%s' character set."), |
8731e58e | 1311 | copy, target_charset ()); |
234b45d4 KB |
1312 | } |
1313 | ||
c906108c SS |
1314 | /* Parse a C escape sequence. STRING_PTR points to a variable |
1315 | containing a pointer to the string to parse. That pointer | |
1316 | should point to the character after the \. That pointer | |
1317 | is updated past the characters we use. The value of the | |
1318 | escape sequence is returned. | |
1319 | ||
1320 | A negative value means the sequence \ newline was seen, | |
1321 | which is supposed to be equivalent to nothing at all. | |
1322 | ||
1323 | If \ is followed by a null character, we return a negative | |
1324 | value and leave the string pointer pointing at the null character. | |
1325 | ||
1326 | If \ is followed by 000, we return 0 and leave the string pointer | |
1327 | after the zeros. A value of 0 does not mean end of string. */ | |
1328 | ||
1329 | int | |
fba45db2 | 1330 | parse_escape (char **string_ptr) |
c906108c | 1331 | { |
234b45d4 | 1332 | int target_char; |
52f0bd74 | 1333 | int c = *(*string_ptr)++; |
234b45d4 KB |
1334 | if (c_parse_backslash (c, &target_char)) |
1335 | return target_char; | |
8731e58e AC |
1336 | else |
1337 | switch (c) | |
234b45d4 | 1338 | { |
8731e58e AC |
1339 | case '\n': |
1340 | return -2; | |
1341 | case 0: | |
1342 | (*string_ptr)--; | |
1343 | return 0; | |
1344 | case '^': | |
1345 | { | |
1346 | /* Remember where this escape sequence started, for reporting | |
1347 | errors. */ | |
1348 | char *sequence_start_pos = *string_ptr - 1; | |
234b45d4 | 1349 | |
8731e58e AC |
1350 | c = *(*string_ptr)++; |
1351 | ||
1352 | if (c == '?') | |
1353 | { | |
1354 | /* XXXCHARSET: What is `delete' in the host character set? */ | |
1355 | c = 0177; | |
1356 | ||
1357 | if (!host_char_to_target (c, &target_char)) | |
8a3fe4f8 AC |
1358 | error (_("There is no character corresponding to `Delete' " |
1359 | "in the target character set `%s'."), host_charset ()); | |
8731e58e AC |
1360 | |
1361 | return target_char; | |
1362 | } | |
1363 | else if (c == '\\') | |
1364 | target_char = parse_escape (string_ptr); | |
1365 | else | |
1366 | { | |
1367 | if (!host_char_to_target (c, &target_char)) | |
1368 | no_control_char_error (sequence_start_pos, *string_ptr); | |
1369 | } | |
1370 | ||
1371 | /* Now target_char is something like `c', and we want to find | |
1372 | its control-character equivalent. */ | |
1373 | if (!target_char_to_control_char (target_char, &target_char)) | |
1374 | no_control_char_error (sequence_start_pos, *string_ptr); | |
1375 | ||
1376 | return target_char; | |
1377 | } | |
1378 | ||
1379 | /* XXXCHARSET: we need to use isdigit and value-of-digit | |
1380 | methods of the host character set here. */ | |
1381 | ||
1382 | case '0': | |
1383 | case '1': | |
1384 | case '2': | |
1385 | case '3': | |
1386 | case '4': | |
1387 | case '5': | |
1388 | case '6': | |
1389 | case '7': | |
1390 | { | |
aa1ee363 AC |
1391 | int i = c - '0'; |
1392 | int count = 0; | |
8731e58e AC |
1393 | while (++count < 3) |
1394 | { | |
5cb316ef AC |
1395 | c = (**string_ptr); |
1396 | if (c >= '0' && c <= '7') | |
8731e58e | 1397 | { |
5cb316ef | 1398 | (*string_ptr)++; |
8731e58e AC |
1399 | i *= 8; |
1400 | i += c - '0'; | |
1401 | } | |
1402 | else | |
1403 | { | |
8731e58e AC |
1404 | break; |
1405 | } | |
1406 | } | |
1407 | return i; | |
1408 | } | |
1409 | default: | |
1410 | if (!host_char_to_target (c, &target_char)) | |
1411 | error | |
1412 | ("The escape sequence `\%c' is equivalent to plain `%c', which" | |
1413 | " has no equivalent\n" "in the `%s' character set.", c, c, | |
1414 | target_charset ()); | |
1415 | return target_char; | |
c906108c | 1416 | } |
c906108c SS |
1417 | } |
1418 | \f | |
1419 | /* Print the character C on STREAM as part of the contents of a literal | |
1420 | string whose delimiter is QUOTER. Note that this routine should only | |
1421 | be call for printing things which are independent of the language | |
1422 | of the program being debugged. */ | |
1423 | ||
43e526b9 | 1424 | static void |
74f832da | 1425 | printchar (int c, void (*do_fputs) (const char *, struct ui_file *), |
bee0189a DJ |
1426 | void (*do_fprintf) (struct ui_file *, const char *, ...) |
1427 | ATTRIBUTE_FPTR_PRINTF_2, struct ui_file *stream, int quoter) | |
c906108c SS |
1428 | { |
1429 | ||
1430 | c &= 0xFF; /* Avoid sign bit follies */ | |
1431 | ||
c5aa993b JM |
1432 | if (c < 0x20 || /* Low control chars */ |
1433 | (c >= 0x7F && c < 0xA0) || /* DEL, High controls */ | |
1434 | (sevenbit_strings && c >= 0x80)) | |
1435 | { /* high order bit set */ | |
1436 | switch (c) | |
1437 | { | |
1438 | case '\n': | |
43e526b9 | 1439 | do_fputs ("\\n", stream); |
c5aa993b JM |
1440 | break; |
1441 | case '\b': | |
43e526b9 | 1442 | do_fputs ("\\b", stream); |
c5aa993b JM |
1443 | break; |
1444 | case '\t': | |
43e526b9 | 1445 | do_fputs ("\\t", stream); |
c5aa993b JM |
1446 | break; |
1447 | case '\f': | |
43e526b9 | 1448 | do_fputs ("\\f", stream); |
c5aa993b JM |
1449 | break; |
1450 | case '\r': | |
43e526b9 | 1451 | do_fputs ("\\r", stream); |
c5aa993b JM |
1452 | break; |
1453 | case '\033': | |
43e526b9 | 1454 | do_fputs ("\\e", stream); |
c5aa993b JM |
1455 | break; |
1456 | case '\007': | |
43e526b9 | 1457 | do_fputs ("\\a", stream); |
c5aa993b JM |
1458 | break; |
1459 | default: | |
43e526b9 | 1460 | do_fprintf (stream, "\\%.3o", (unsigned int) c); |
c5aa993b JM |
1461 | break; |
1462 | } | |
1463 | } | |
1464 | else | |
1465 | { | |
1466 | if (c == '\\' || c == quoter) | |
43e526b9 JM |
1467 | do_fputs ("\\", stream); |
1468 | do_fprintf (stream, "%c", c); | |
c5aa993b | 1469 | } |
c906108c | 1470 | } |
43e526b9 JM |
1471 | |
1472 | /* Print the character C on STREAM as part of the contents of a | |
1473 | literal string whose delimiter is QUOTER. Note that these routines | |
1474 | should only be call for printing things which are independent of | |
1475 | the language of the program being debugged. */ | |
1476 | ||
1477 | void | |
fba45db2 | 1478 | fputstr_filtered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1479 | { |
1480 | while (*str) | |
1481 | printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter); | |
1482 | } | |
1483 | ||
1484 | void | |
fba45db2 | 1485 | fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1486 | { |
1487 | while (*str) | |
1488 | printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1489 | } | |
1490 | ||
0876f84a DJ |
1491 | void |
1492 | fputstrn_filtered (const char *str, int n, int quoter, | |
1493 | struct ui_file *stream) | |
1494 | { | |
1495 | int i; | |
1496 | for (i = 0; i < n; i++) | |
1497 | printchar (str[i], fputs_filtered, fprintf_filtered, stream, quoter); | |
1498 | } | |
1499 | ||
43e526b9 | 1500 | void |
8731e58e AC |
1501 | fputstrn_unfiltered (const char *str, int n, int quoter, |
1502 | struct ui_file *stream) | |
43e526b9 JM |
1503 | { |
1504 | int i; | |
1505 | for (i = 0; i < n; i++) | |
1506 | printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1507 | } | |
c906108c | 1508 | \f |
c5aa993b | 1509 | |
c906108c SS |
1510 | /* Number of lines per page or UINT_MAX if paging is disabled. */ |
1511 | static unsigned int lines_per_page; | |
920d2a44 AC |
1512 | static void |
1513 | show_lines_per_page (struct ui_file *file, int from_tty, | |
1514 | struct cmd_list_element *c, const char *value) | |
1515 | { | |
1516 | fprintf_filtered (file, _("\ | |
1517 | Number of lines gdb thinks are in a page is %s.\n"), | |
1518 | value); | |
1519 | } | |
eb0d3137 | 1520 | |
cbfbd72a | 1521 | /* Number of chars per line or UINT_MAX if line folding is disabled. */ |
c906108c | 1522 | static unsigned int chars_per_line; |
920d2a44 AC |
1523 | static void |
1524 | show_chars_per_line (struct ui_file *file, int from_tty, | |
1525 | struct cmd_list_element *c, const char *value) | |
1526 | { | |
1527 | fprintf_filtered (file, _("\ | |
1528 | Number of characters gdb thinks are in a line is %s.\n"), | |
1529 | value); | |
1530 | } | |
eb0d3137 | 1531 | |
c906108c SS |
1532 | /* Current count of lines printed on this page, chars on this line. */ |
1533 | static unsigned int lines_printed, chars_printed; | |
1534 | ||
1535 | /* Buffer and start column of buffered text, for doing smarter word- | |
1536 | wrapping. When someone calls wrap_here(), we start buffering output | |
1537 | that comes through fputs_filtered(). If we see a newline, we just | |
1538 | spit it out and forget about the wrap_here(). If we see another | |
1539 | wrap_here(), we spit it out and remember the newer one. If we see | |
1540 | the end of the line, we spit out a newline, the indent, and then | |
1541 | the buffered output. */ | |
1542 | ||
1543 | /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which | |
1544 | are waiting to be output (they have already been counted in chars_printed). | |
1545 | When wrap_buffer[0] is null, the buffer is empty. */ | |
1546 | static char *wrap_buffer; | |
1547 | ||
1548 | /* Pointer in wrap_buffer to the next character to fill. */ | |
1549 | static char *wrap_pointer; | |
1550 | ||
1551 | /* String to indent by if the wrap occurs. Must not be NULL if wrap_column | |
1552 | is non-zero. */ | |
1553 | static char *wrap_indent; | |
1554 | ||
1555 | /* Column number on the screen where wrap_buffer begins, or 0 if wrapping | |
1556 | is not in effect. */ | |
1557 | static int wrap_column; | |
c906108c | 1558 | \f |
c5aa993b | 1559 | |
eb0d3137 MK |
1560 | /* Inialize the number of lines per page and chars per line. */ |
1561 | ||
c906108c | 1562 | void |
fba45db2 | 1563 | init_page_info (void) |
c906108c SS |
1564 | { |
1565 | #if defined(TUI) | |
5ecb1806 | 1566 | if (!tui_get_command_dimension (&chars_per_line, &lines_per_page)) |
c906108c SS |
1567 | #endif |
1568 | { | |
eb0d3137 | 1569 | int rows, cols; |
c906108c | 1570 | |
ec145965 EZ |
1571 | #if defined(__GO32__) |
1572 | rows = ScreenRows (); | |
1573 | cols = ScreenCols (); | |
1574 | lines_per_page = rows; | |
1575 | chars_per_line = cols; | |
1576 | #else | |
eb0d3137 MK |
1577 | /* Make sure Readline has initialized its terminal settings. */ |
1578 | rl_reset_terminal (NULL); | |
c906108c | 1579 | |
eb0d3137 MK |
1580 | /* Get the screen size from Readline. */ |
1581 | rl_get_screen_size (&rows, &cols); | |
1582 | lines_per_page = rows; | |
1583 | chars_per_line = cols; | |
c906108c | 1584 | |
eb0d3137 MK |
1585 | /* Readline should have fetched the termcap entry for us. */ |
1586 | if (tgetnum ("li") < 0 || getenv ("EMACS")) | |
1587 | { | |
1588 | /* The number of lines per page is not mentioned in the | |
1589 | terminal description. This probably means that paging is | |
1590 | not useful (e.g. emacs shell window), so disable paging. */ | |
1591 | lines_per_page = UINT_MAX; | |
1592 | } | |
c906108c | 1593 | |
eb0d3137 | 1594 | /* FIXME: Get rid of this junk. */ |
c906108c | 1595 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) |
c906108c SS |
1596 | SIGWINCH_HANDLER (SIGWINCH); |
1597 | #endif | |
eb0d3137 | 1598 | |
c906108c | 1599 | /* If the output is not a terminal, don't paginate it. */ |
d9fcf2fb | 1600 | if (!ui_file_isatty (gdb_stdout)) |
c5aa993b | 1601 | lines_per_page = UINT_MAX; |
eb0d3137 | 1602 | #endif |
ec145965 | 1603 | } |
eb0d3137 MK |
1604 | |
1605 | set_screen_size (); | |
c5aa993b | 1606 | set_width (); |
c906108c SS |
1607 | } |
1608 | ||
eb0d3137 MK |
1609 | /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */ |
1610 | ||
1611 | static void | |
1612 | set_screen_size (void) | |
1613 | { | |
1614 | int rows = lines_per_page; | |
1615 | int cols = chars_per_line; | |
1616 | ||
1617 | if (rows <= 0) | |
1618 | rows = INT_MAX; | |
1619 | ||
1620 | if (cols <= 0) | |
0caa462c | 1621 | cols = INT_MAX; |
eb0d3137 MK |
1622 | |
1623 | /* Update Readline's idea of the terminal size. */ | |
1624 | rl_set_screen_size (rows, cols); | |
1625 | } | |
1626 | ||
1627 | /* Reinitialize WRAP_BUFFER according to the current value of | |
1628 | CHARS_PER_LINE. */ | |
1629 | ||
c906108c | 1630 | static void |
fba45db2 | 1631 | set_width (void) |
c906108c SS |
1632 | { |
1633 | if (chars_per_line == 0) | |
c5aa993b | 1634 | init_page_info (); |
c906108c SS |
1635 | |
1636 | if (!wrap_buffer) | |
1637 | { | |
1638 | wrap_buffer = (char *) xmalloc (chars_per_line + 2); | |
1639 | wrap_buffer[0] = '\0'; | |
1640 | } | |
1641 | else | |
1642 | wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2); | |
eb0d3137 | 1643 | wrap_pointer = wrap_buffer; /* Start it at the beginning. */ |
c906108c SS |
1644 | } |
1645 | ||
c5aa993b | 1646 | static void |
fba45db2 | 1647 | set_width_command (char *args, int from_tty, struct cmd_list_element *c) |
c906108c | 1648 | { |
eb0d3137 | 1649 | set_screen_size (); |
c906108c SS |
1650 | set_width (); |
1651 | } | |
1652 | ||
eb0d3137 MK |
1653 | static void |
1654 | set_height_command (char *args, int from_tty, struct cmd_list_element *c) | |
1655 | { | |
1656 | set_screen_size (); | |
1657 | } | |
1658 | ||
c906108c SS |
1659 | /* Wait, so the user can read what's on the screen. Prompt the user |
1660 | to continue by pressing RETURN. */ | |
1661 | ||
1662 | static void | |
fba45db2 | 1663 | prompt_for_continue (void) |
c906108c SS |
1664 | { |
1665 | char *ignore; | |
1666 | char cont_prompt[120]; | |
1667 | ||
1668 | if (annotation_level > 1) | |
a3f17187 | 1669 | printf_unfiltered (("\n\032\032pre-prompt-for-continue\n")); |
c906108c SS |
1670 | |
1671 | strcpy (cont_prompt, | |
1672 | "---Type <return> to continue, or q <return> to quit---"); | |
1673 | if (annotation_level > 1) | |
1674 | strcat (cont_prompt, "\n\032\032prompt-for-continue\n"); | |
1675 | ||
1676 | /* We must do this *before* we call gdb_readline, else it will eventually | |
1677 | call us -- thinking that we're trying to print beyond the end of the | |
1678 | screen. */ | |
1679 | reinitialize_more_filter (); | |
1680 | ||
1681 | immediate_quit++; | |
1682 | /* On a real operating system, the user can quit with SIGINT. | |
1683 | But not on GO32. | |
1684 | ||
1685 | 'q' is provided on all systems so users don't have to change habits | |
1686 | from system to system, and because telling them what to do in | |
1687 | the prompt is more user-friendly than expecting them to think of | |
1688 | SIGINT. */ | |
1689 | /* Call readline, not gdb_readline, because GO32 readline handles control-C | |
1690 | whereas control-C to gdb_readline will cause the user to get dumped | |
1691 | out to DOS. */ | |
b4f5539f | 1692 | ignore = gdb_readline_wrapper (cont_prompt); |
c906108c SS |
1693 | |
1694 | if (annotation_level > 1) | |
a3f17187 | 1695 | printf_unfiltered (("\n\032\032post-prompt-for-continue\n")); |
c906108c SS |
1696 | |
1697 | if (ignore) | |
1698 | { | |
1699 | char *p = ignore; | |
1700 | while (*p == ' ' || *p == '\t') | |
1701 | ++p; | |
1702 | if (p[0] == 'q') | |
362646f5 | 1703 | async_request_quit (0); |
b8c9b27d | 1704 | xfree (ignore); |
c906108c SS |
1705 | } |
1706 | immediate_quit--; | |
1707 | ||
1708 | /* Now we have to do this again, so that GDB will know that it doesn't | |
1709 | need to save the ---Type <return>--- line at the top of the screen. */ | |
1710 | reinitialize_more_filter (); | |
1711 | ||
1712 | dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ | |
1713 | } | |
1714 | ||
1715 | /* Reinitialize filter; ie. tell it to reset to original values. */ | |
1716 | ||
1717 | void | |
fba45db2 | 1718 | reinitialize_more_filter (void) |
c906108c SS |
1719 | { |
1720 | lines_printed = 0; | |
1721 | chars_printed = 0; | |
1722 | } | |
1723 | ||
1724 | /* Indicate that if the next sequence of characters overflows the line, | |
1725 | a newline should be inserted here rather than when it hits the end. | |
1726 | If INDENT is non-null, it is a string to be printed to indent the | |
1727 | wrapped part on the next line. INDENT must remain accessible until | |
1728 | the next call to wrap_here() or until a newline is printed through | |
1729 | fputs_filtered(). | |
1730 | ||
1731 | If the line is already overfull, we immediately print a newline and | |
1732 | the indentation, and disable further wrapping. | |
1733 | ||
1734 | If we don't know the width of lines, but we know the page height, | |
1735 | we must not wrap words, but should still keep track of newlines | |
1736 | that were explicitly printed. | |
1737 | ||
1738 | INDENT should not contain tabs, as that will mess up the char count | |
1739 | on the next line. FIXME. | |
1740 | ||
1741 | This routine is guaranteed to force out any output which has been | |
1742 | squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be | |
1743 | used to force out output from the wrap_buffer. */ | |
1744 | ||
1745 | void | |
fba45db2 | 1746 | wrap_here (char *indent) |
c906108c SS |
1747 | { |
1748 | /* This should have been allocated, but be paranoid anyway. */ | |
1749 | if (!wrap_buffer) | |
e2e0b3e5 | 1750 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
1751 | |
1752 | if (wrap_buffer[0]) | |
1753 | { | |
1754 | *wrap_pointer = '\0'; | |
1755 | fputs_unfiltered (wrap_buffer, gdb_stdout); | |
1756 | } | |
1757 | wrap_pointer = wrap_buffer; | |
1758 | wrap_buffer[0] = '\0'; | |
c5aa993b | 1759 | if (chars_per_line == UINT_MAX) /* No line overflow checking */ |
c906108c SS |
1760 | { |
1761 | wrap_column = 0; | |
1762 | } | |
1763 | else if (chars_printed >= chars_per_line) | |
1764 | { | |
1765 | puts_filtered ("\n"); | |
1766 | if (indent != NULL) | |
1767 | puts_filtered (indent); | |
1768 | wrap_column = 0; | |
1769 | } | |
1770 | else | |
1771 | { | |
1772 | wrap_column = chars_printed; | |
1773 | if (indent == NULL) | |
1774 | wrap_indent = ""; | |
1775 | else | |
1776 | wrap_indent = indent; | |
1777 | } | |
1778 | } | |
1779 | ||
4a351cef AF |
1780 | /* Print input string to gdb_stdout, filtered, with wrap, |
1781 | arranging strings in columns of n chars. String can be | |
1782 | right or left justified in the column. Never prints | |
1783 | trailing spaces. String should never be longer than | |
1784 | width. FIXME: this could be useful for the EXAMINE | |
1785 | command, which currently doesn't tabulate very well */ | |
1786 | ||
1787 | void | |
1788 | puts_filtered_tabular (char *string, int width, int right) | |
1789 | { | |
1790 | int spaces = 0; | |
1791 | int stringlen; | |
1792 | char *spacebuf; | |
1793 | ||
1794 | gdb_assert (chars_per_line > 0); | |
1795 | if (chars_per_line == UINT_MAX) | |
1796 | { | |
1797 | fputs_filtered (string, gdb_stdout); | |
1798 | fputs_filtered ("\n", gdb_stdout); | |
1799 | return; | |
1800 | } | |
1801 | ||
1802 | if (((chars_printed - 1) / width + 2) * width >= chars_per_line) | |
1803 | fputs_filtered ("\n", gdb_stdout); | |
1804 | ||
1805 | if (width >= chars_per_line) | |
1806 | width = chars_per_line - 1; | |
1807 | ||
1808 | stringlen = strlen (string); | |
1809 | ||
1810 | if (chars_printed > 0) | |
1811 | spaces = width - (chars_printed - 1) % width - 1; | |
1812 | if (right) | |
1813 | spaces += width - stringlen; | |
1814 | ||
1815 | spacebuf = alloca (spaces + 1); | |
1816 | spacebuf[spaces] = '\0'; | |
1817 | while (spaces--) | |
1818 | spacebuf[spaces] = ' '; | |
1819 | ||
1820 | fputs_filtered (spacebuf, gdb_stdout); | |
1821 | fputs_filtered (string, gdb_stdout); | |
1822 | } | |
1823 | ||
1824 | ||
c906108c SS |
1825 | /* Ensure that whatever gets printed next, using the filtered output |
1826 | commands, starts at the beginning of the line. I.E. if there is | |
1827 | any pending output for the current line, flush it and start a new | |
1828 | line. Otherwise do nothing. */ | |
1829 | ||
1830 | void | |
fba45db2 | 1831 | begin_line (void) |
c906108c SS |
1832 | { |
1833 | if (chars_printed > 0) | |
1834 | { | |
1835 | puts_filtered ("\n"); | |
1836 | } | |
1837 | } | |
1838 | ||
ac9a91a7 | 1839 | |
c906108c SS |
1840 | /* Like fputs but if FILTER is true, pause after every screenful. |
1841 | ||
1842 | Regardless of FILTER can wrap at points other than the final | |
1843 | character of a line. | |
1844 | ||
1845 | Unlike fputs, fputs_maybe_filtered does not return a value. | |
1846 | It is OK for LINEBUFFER to be NULL, in which case just don't print | |
1847 | anything. | |
1848 | ||
1849 | Note that a longjmp to top level may occur in this routine (only if | |
1850 | FILTER is true) (since prompt_for_continue may do so) so this | |
1851 | routine should not be called when cleanups are not in place. */ | |
1852 | ||
1853 | static void | |
fba45db2 KB |
1854 | fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream, |
1855 | int filter) | |
c906108c SS |
1856 | { |
1857 | const char *lineptr; | |
1858 | ||
1859 | if (linebuffer == 0) | |
1860 | return; | |
1861 | ||
1862 | /* Don't do any filtering if it is disabled. */ | |
7a292a7a | 1863 | if ((stream != gdb_stdout) || !pagination_enabled |
c5aa993b | 1864 | || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX)) |
c906108c SS |
1865 | { |
1866 | fputs_unfiltered (linebuffer, stream); | |
1867 | return; | |
1868 | } | |
1869 | ||
1870 | /* Go through and output each character. Show line extension | |
1871 | when this is necessary; prompt user for new page when this is | |
1872 | necessary. */ | |
c5aa993b | 1873 | |
c906108c SS |
1874 | lineptr = linebuffer; |
1875 | while (*lineptr) | |
1876 | { | |
1877 | /* Possible new page. */ | |
8731e58e | 1878 | if (filter && (lines_printed >= lines_per_page - 1)) |
c906108c SS |
1879 | prompt_for_continue (); |
1880 | ||
1881 | while (*lineptr && *lineptr != '\n') | |
1882 | { | |
1883 | /* Print a single line. */ | |
1884 | if (*lineptr == '\t') | |
1885 | { | |
1886 | if (wrap_column) | |
1887 | *wrap_pointer++ = '\t'; | |
1888 | else | |
1889 | fputc_unfiltered ('\t', stream); | |
1890 | /* Shifting right by 3 produces the number of tab stops | |
1891 | we have already passed, and then adding one and | |
c5aa993b | 1892 | shifting left 3 advances to the next tab stop. */ |
c906108c SS |
1893 | chars_printed = ((chars_printed >> 3) + 1) << 3; |
1894 | lineptr++; | |
1895 | } | |
1896 | else | |
1897 | { | |
1898 | if (wrap_column) | |
1899 | *wrap_pointer++ = *lineptr; | |
1900 | else | |
c5aa993b | 1901 | fputc_unfiltered (*lineptr, stream); |
c906108c SS |
1902 | chars_printed++; |
1903 | lineptr++; | |
1904 | } | |
c5aa993b | 1905 | |
c906108c SS |
1906 | if (chars_printed >= chars_per_line) |
1907 | { | |
1908 | unsigned int save_chars = chars_printed; | |
1909 | ||
1910 | chars_printed = 0; | |
1911 | lines_printed++; | |
1912 | /* If we aren't actually wrapping, don't output newline -- | |
c5aa993b JM |
1913 | if chars_per_line is right, we probably just overflowed |
1914 | anyway; if it's wrong, let us keep going. */ | |
c906108c SS |
1915 | if (wrap_column) |
1916 | fputc_unfiltered ('\n', stream); | |
1917 | ||
1918 | /* Possible new page. */ | |
1919 | if (lines_printed >= lines_per_page - 1) | |
1920 | prompt_for_continue (); | |
1921 | ||
1922 | /* Now output indentation and wrapped string */ | |
1923 | if (wrap_column) | |
1924 | { | |
1925 | fputs_unfiltered (wrap_indent, stream); | |
8731e58e | 1926 | *wrap_pointer = '\0'; /* Null-terminate saved stuff */ |
c5aa993b | 1927 | fputs_unfiltered (wrap_buffer, stream); /* and eject it */ |
c906108c SS |
1928 | /* FIXME, this strlen is what prevents wrap_indent from |
1929 | containing tabs. However, if we recurse to print it | |
1930 | and count its chars, we risk trouble if wrap_indent is | |
1931 | longer than (the user settable) chars_per_line. | |
1932 | Note also that this can set chars_printed > chars_per_line | |
1933 | if we are printing a long string. */ | |
1934 | chars_printed = strlen (wrap_indent) | |
c5aa993b | 1935 | + (save_chars - wrap_column); |
c906108c SS |
1936 | wrap_pointer = wrap_buffer; /* Reset buffer */ |
1937 | wrap_buffer[0] = '\0'; | |
c5aa993b JM |
1938 | wrap_column = 0; /* And disable fancy wrap */ |
1939 | } | |
c906108c SS |
1940 | } |
1941 | } | |
1942 | ||
1943 | if (*lineptr == '\n') | |
1944 | { | |
1945 | chars_printed = 0; | |
c5aa993b | 1946 | wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */ |
c906108c SS |
1947 | lines_printed++; |
1948 | fputc_unfiltered ('\n', stream); | |
1949 | lineptr++; | |
1950 | } | |
1951 | } | |
1952 | } | |
1953 | ||
1954 | void | |
fba45db2 | 1955 | fputs_filtered (const char *linebuffer, struct ui_file *stream) |
c906108c SS |
1956 | { |
1957 | fputs_maybe_filtered (linebuffer, stream, 1); | |
1958 | } | |
1959 | ||
1960 | int | |
fba45db2 | 1961 | putchar_unfiltered (int c) |
c906108c | 1962 | { |
11cf8741 | 1963 | char buf = c; |
d9fcf2fb | 1964 | ui_file_write (gdb_stdout, &buf, 1); |
c906108c SS |
1965 | return c; |
1966 | } | |
1967 | ||
d1f4cff8 AC |
1968 | /* Write character C to gdb_stdout using GDB's paging mechanism and return C. |
1969 | May return nonlocally. */ | |
1970 | ||
1971 | int | |
1972 | putchar_filtered (int c) | |
1973 | { | |
1974 | return fputc_filtered (c, gdb_stdout); | |
1975 | } | |
1976 | ||
c906108c | 1977 | int |
fba45db2 | 1978 | fputc_unfiltered (int c, struct ui_file *stream) |
c906108c | 1979 | { |
11cf8741 | 1980 | char buf = c; |
d9fcf2fb | 1981 | ui_file_write (stream, &buf, 1); |
c906108c SS |
1982 | return c; |
1983 | } | |
1984 | ||
1985 | int | |
fba45db2 | 1986 | fputc_filtered (int c, struct ui_file *stream) |
c906108c SS |
1987 | { |
1988 | char buf[2]; | |
1989 | ||
1990 | buf[0] = c; | |
1991 | buf[1] = 0; | |
1992 | fputs_filtered (buf, stream); | |
1993 | return c; | |
1994 | } | |
1995 | ||
1996 | /* puts_debug is like fputs_unfiltered, except it prints special | |
1997 | characters in printable fashion. */ | |
1998 | ||
1999 | void | |
fba45db2 | 2000 | puts_debug (char *prefix, char *string, char *suffix) |
c906108c SS |
2001 | { |
2002 | int ch; | |
2003 | ||
2004 | /* Print prefix and suffix after each line. */ | |
2005 | static int new_line = 1; | |
2006 | static int return_p = 0; | |
2007 | static char *prev_prefix = ""; | |
2008 | static char *prev_suffix = ""; | |
2009 | ||
2010 | if (*string == '\n') | |
2011 | return_p = 0; | |
2012 | ||
2013 | /* If the prefix is changing, print the previous suffix, a new line, | |
2014 | and the new prefix. */ | |
c5aa993b | 2015 | if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line) |
c906108c | 2016 | { |
9846de1b JM |
2017 | fputs_unfiltered (prev_suffix, gdb_stdlog); |
2018 | fputs_unfiltered ("\n", gdb_stdlog); | |
2019 | fputs_unfiltered (prefix, gdb_stdlog); | |
c906108c SS |
2020 | } |
2021 | ||
2022 | /* Print prefix if we printed a newline during the previous call. */ | |
2023 | if (new_line) | |
2024 | { | |
2025 | new_line = 0; | |
9846de1b | 2026 | fputs_unfiltered (prefix, gdb_stdlog); |
c906108c SS |
2027 | } |
2028 | ||
2029 | prev_prefix = prefix; | |
2030 | prev_suffix = suffix; | |
2031 | ||
2032 | /* Output characters in a printable format. */ | |
2033 | while ((ch = *string++) != '\0') | |
2034 | { | |
2035 | switch (ch) | |
c5aa993b | 2036 | { |
c906108c SS |
2037 | default: |
2038 | if (isprint (ch)) | |
9846de1b | 2039 | fputc_unfiltered (ch, gdb_stdlog); |
c906108c SS |
2040 | |
2041 | else | |
9846de1b | 2042 | fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff); |
c906108c SS |
2043 | break; |
2044 | ||
c5aa993b JM |
2045 | case '\\': |
2046 | fputs_unfiltered ("\\\\", gdb_stdlog); | |
2047 | break; | |
2048 | case '\b': | |
2049 | fputs_unfiltered ("\\b", gdb_stdlog); | |
2050 | break; | |
2051 | case '\f': | |
2052 | fputs_unfiltered ("\\f", gdb_stdlog); | |
2053 | break; | |
2054 | case '\n': | |
2055 | new_line = 1; | |
2056 | fputs_unfiltered ("\\n", gdb_stdlog); | |
2057 | break; | |
2058 | case '\r': | |
2059 | fputs_unfiltered ("\\r", gdb_stdlog); | |
2060 | break; | |
2061 | case '\t': | |
2062 | fputs_unfiltered ("\\t", gdb_stdlog); | |
2063 | break; | |
2064 | case '\v': | |
2065 | fputs_unfiltered ("\\v", gdb_stdlog); | |
2066 | break; | |
2067 | } | |
c906108c SS |
2068 | |
2069 | return_p = ch == '\r'; | |
2070 | } | |
2071 | ||
2072 | /* Print suffix if we printed a newline. */ | |
2073 | if (new_line) | |
2074 | { | |
9846de1b JM |
2075 | fputs_unfiltered (suffix, gdb_stdlog); |
2076 | fputs_unfiltered ("\n", gdb_stdlog); | |
c906108c SS |
2077 | } |
2078 | } | |
2079 | ||
2080 | ||
2081 | /* Print a variable number of ARGS using format FORMAT. If this | |
2082 | information is going to put the amount written (since the last call | |
2083 | to REINITIALIZE_MORE_FILTER or the last page break) over the page size, | |
2084 | call prompt_for_continue to get the users permision to continue. | |
2085 | ||
2086 | Unlike fprintf, this function does not return a value. | |
2087 | ||
2088 | We implement three variants, vfprintf (takes a vararg list and stream), | |
2089 | fprintf (takes a stream to write on), and printf (the usual). | |
2090 | ||
2091 | Note also that a longjmp to top level may occur in this routine | |
2092 | (since prompt_for_continue may do so) so this routine should not be | |
2093 | called when cleanups are not in place. */ | |
2094 | ||
2095 | static void | |
fba45db2 KB |
2096 | vfprintf_maybe_filtered (struct ui_file *stream, const char *format, |
2097 | va_list args, int filter) | |
c906108c SS |
2098 | { |
2099 | char *linebuffer; | |
2100 | struct cleanup *old_cleanups; | |
2101 | ||
e623b504 | 2102 | linebuffer = xstrvprintf (format, args); |
b8c9b27d | 2103 | old_cleanups = make_cleanup (xfree, linebuffer); |
c906108c SS |
2104 | fputs_maybe_filtered (linebuffer, stream, filter); |
2105 | do_cleanups (old_cleanups); | |
2106 | } | |
2107 | ||
2108 | ||
2109 | void | |
fba45db2 | 2110 | vfprintf_filtered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2111 | { |
2112 | vfprintf_maybe_filtered (stream, format, args, 1); | |
2113 | } | |
2114 | ||
2115 | void | |
fba45db2 | 2116 | vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2117 | { |
2118 | char *linebuffer; | |
2119 | struct cleanup *old_cleanups; | |
2120 | ||
e623b504 | 2121 | linebuffer = xstrvprintf (format, args); |
b8c9b27d | 2122 | old_cleanups = make_cleanup (xfree, linebuffer); |
c906108c SS |
2123 | fputs_unfiltered (linebuffer, stream); |
2124 | do_cleanups (old_cleanups); | |
2125 | } | |
2126 | ||
2127 | void | |
fba45db2 | 2128 | vprintf_filtered (const char *format, va_list args) |
c906108c SS |
2129 | { |
2130 | vfprintf_maybe_filtered (gdb_stdout, format, args, 1); | |
2131 | } | |
2132 | ||
2133 | void | |
fba45db2 | 2134 | vprintf_unfiltered (const char *format, va_list args) |
c906108c SS |
2135 | { |
2136 | vfprintf_unfiltered (gdb_stdout, format, args); | |
2137 | } | |
2138 | ||
c906108c | 2139 | void |
8731e58e | 2140 | fprintf_filtered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2141 | { |
2142 | va_list args; | |
c906108c | 2143 | va_start (args, format); |
c906108c SS |
2144 | vfprintf_filtered (stream, format, args); |
2145 | va_end (args); | |
2146 | } | |
2147 | ||
c906108c | 2148 | void |
8731e58e | 2149 | fprintf_unfiltered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2150 | { |
2151 | va_list args; | |
c906108c | 2152 | va_start (args, format); |
c906108c SS |
2153 | vfprintf_unfiltered (stream, format, args); |
2154 | va_end (args); | |
2155 | } | |
2156 | ||
2157 | /* Like fprintf_filtered, but prints its result indented. | |
2158 | Called as fprintfi_filtered (spaces, stream, format, ...); */ | |
2159 | ||
c906108c | 2160 | void |
8731e58e AC |
2161 | fprintfi_filtered (int spaces, struct ui_file *stream, const char *format, |
2162 | ...) | |
c906108c SS |
2163 | { |
2164 | va_list args; | |
c906108c | 2165 | va_start (args, format); |
c906108c SS |
2166 | print_spaces_filtered (spaces, stream); |
2167 | ||
2168 | vfprintf_filtered (stream, format, args); | |
2169 | va_end (args); | |
2170 | } | |
2171 | ||
2172 | ||
c906108c | 2173 | void |
8731e58e | 2174 | printf_filtered (const char *format, ...) |
c906108c SS |
2175 | { |
2176 | va_list args; | |
c906108c | 2177 | va_start (args, format); |
c906108c SS |
2178 | vfprintf_filtered (gdb_stdout, format, args); |
2179 | va_end (args); | |
2180 | } | |
2181 | ||
2182 | ||
c906108c | 2183 | void |
8731e58e | 2184 | printf_unfiltered (const char *format, ...) |
c906108c SS |
2185 | { |
2186 | va_list args; | |
c906108c | 2187 | va_start (args, format); |
c906108c SS |
2188 | vfprintf_unfiltered (gdb_stdout, format, args); |
2189 | va_end (args); | |
2190 | } | |
2191 | ||
2192 | /* Like printf_filtered, but prints it's result indented. | |
2193 | Called as printfi_filtered (spaces, format, ...); */ | |
2194 | ||
c906108c | 2195 | void |
8731e58e | 2196 | printfi_filtered (int spaces, const char *format, ...) |
c906108c SS |
2197 | { |
2198 | va_list args; | |
c906108c | 2199 | va_start (args, format); |
c906108c SS |
2200 | print_spaces_filtered (spaces, gdb_stdout); |
2201 | vfprintf_filtered (gdb_stdout, format, args); | |
2202 | va_end (args); | |
2203 | } | |
2204 | ||
2205 | /* Easy -- but watch out! | |
2206 | ||
2207 | This routine is *not* a replacement for puts()! puts() appends a newline. | |
2208 | This one doesn't, and had better not! */ | |
2209 | ||
2210 | void | |
fba45db2 | 2211 | puts_filtered (const char *string) |
c906108c SS |
2212 | { |
2213 | fputs_filtered (string, gdb_stdout); | |
2214 | } | |
2215 | ||
2216 | void | |
fba45db2 | 2217 | puts_unfiltered (const char *string) |
c906108c SS |
2218 | { |
2219 | fputs_unfiltered (string, gdb_stdout); | |
2220 | } | |
2221 | ||
2222 | /* Return a pointer to N spaces and a null. The pointer is good | |
2223 | until the next call to here. */ | |
2224 | char * | |
fba45db2 | 2225 | n_spaces (int n) |
c906108c | 2226 | { |
392a587b JM |
2227 | char *t; |
2228 | static char *spaces = 0; | |
2229 | static int max_spaces = -1; | |
c906108c SS |
2230 | |
2231 | if (n > max_spaces) | |
2232 | { | |
2233 | if (spaces) | |
b8c9b27d | 2234 | xfree (spaces); |
c5aa993b JM |
2235 | spaces = (char *) xmalloc (n + 1); |
2236 | for (t = spaces + n; t != spaces;) | |
c906108c SS |
2237 | *--t = ' '; |
2238 | spaces[n] = '\0'; | |
2239 | max_spaces = n; | |
2240 | } | |
2241 | ||
2242 | return spaces + max_spaces - n; | |
2243 | } | |
2244 | ||
2245 | /* Print N spaces. */ | |
2246 | void | |
fba45db2 | 2247 | print_spaces_filtered (int n, struct ui_file *stream) |
c906108c SS |
2248 | { |
2249 | fputs_filtered (n_spaces (n), stream); | |
2250 | } | |
2251 | \f | |
4a351cef | 2252 | /* C++/ObjC demangler stuff. */ |
c906108c | 2253 | |
389e51db AC |
2254 | /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language |
2255 | LANG, using demangling args ARG_MODE, and print it filtered to STREAM. | |
2256 | If the name is not mangled, or the language for the name is unknown, or | |
2257 | demangling is off, the name is printed in its "raw" form. */ | |
c906108c SS |
2258 | |
2259 | void | |
8731e58e AC |
2260 | fprintf_symbol_filtered (struct ui_file *stream, char *name, |
2261 | enum language lang, int arg_mode) | |
c906108c SS |
2262 | { |
2263 | char *demangled; | |
2264 | ||
2265 | if (name != NULL) | |
2266 | { | |
2267 | /* If user wants to see raw output, no problem. */ | |
2268 | if (!demangle) | |
2269 | { | |
2270 | fputs_filtered (name, stream); | |
2271 | } | |
2272 | else | |
2273 | { | |
9a3d7dfd | 2274 | demangled = language_demangle (language_def (lang), name, arg_mode); |
c906108c SS |
2275 | fputs_filtered (demangled ? demangled : name, stream); |
2276 | if (demangled != NULL) | |
2277 | { | |
b8c9b27d | 2278 | xfree (demangled); |
c906108c SS |
2279 | } |
2280 | } | |
2281 | } | |
2282 | } | |
2283 | ||
2284 | /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any | |
2285 | differences in whitespace. Returns 0 if they match, non-zero if they | |
2286 | don't (slightly different than strcmp()'s range of return values). | |
c5aa993b | 2287 | |
c906108c SS |
2288 | As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO". |
2289 | This "feature" is useful when searching for matching C++ function names | |
2290 | (such as if the user types 'break FOO', where FOO is a mangled C++ | |
2291 | function). */ | |
2292 | ||
2293 | int | |
fba45db2 | 2294 | strcmp_iw (const char *string1, const char *string2) |
c906108c SS |
2295 | { |
2296 | while ((*string1 != '\0') && (*string2 != '\0')) | |
2297 | { | |
2298 | while (isspace (*string1)) | |
2299 | { | |
2300 | string1++; | |
2301 | } | |
2302 | while (isspace (*string2)) | |
2303 | { | |
2304 | string2++; | |
2305 | } | |
2306 | if (*string1 != *string2) | |
2307 | { | |
2308 | break; | |
2309 | } | |
2310 | if (*string1 != '\0') | |
2311 | { | |
2312 | string1++; | |
2313 | string2++; | |
2314 | } | |
2315 | } | |
2316 | return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0'); | |
2317 | } | |
2de7ced7 | 2318 | |
0fe19209 DC |
2319 | /* This is like strcmp except that it ignores whitespace and treats |
2320 | '(' as the first non-NULL character in terms of ordering. Like | |
2321 | strcmp (and unlike strcmp_iw), it returns negative if STRING1 < | |
2322 | STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2 | |
2323 | according to that ordering. | |
2324 | ||
2325 | If a list is sorted according to this function and if you want to | |
2326 | find names in the list that match some fixed NAME according to | |
2327 | strcmp_iw(LIST_ELT, NAME), then the place to start looking is right | |
2328 | where this function would put NAME. | |
2329 | ||
2330 | Here are some examples of why using strcmp to sort is a bad idea: | |
2331 | ||
2332 | Whitespace example: | |
2333 | ||
2334 | Say your partial symtab contains: "foo<char *>", "goo". Then, if | |
2335 | we try to do a search for "foo<char*>", strcmp will locate this | |
2336 | after "foo<char *>" and before "goo". Then lookup_partial_symbol | |
2337 | will start looking at strings beginning with "goo", and will never | |
2338 | see the correct match of "foo<char *>". | |
2339 | ||
2340 | Parenthesis example: | |
2341 | ||
2342 | In practice, this is less like to be an issue, but I'll give it a | |
2343 | shot. Let's assume that '$' is a legitimate character to occur in | |
2344 | symbols. (Which may well even be the case on some systems.) Then | |
2345 | say that the partial symbol table contains "foo$" and "foo(int)". | |
2346 | strcmp will put them in this order, since '$' < '('. Now, if the | |
2347 | user searches for "foo", then strcmp will sort "foo" before "foo$". | |
2348 | Then lookup_partial_symbol will notice that strcmp_iw("foo$", | |
2349 | "foo") is false, so it won't proceed to the actual match of | |
2350 | "foo(int)" with "foo". */ | |
2351 | ||
2352 | int | |
2353 | strcmp_iw_ordered (const char *string1, const char *string2) | |
2354 | { | |
2355 | while ((*string1 != '\0') && (*string2 != '\0')) | |
2356 | { | |
2357 | while (isspace (*string1)) | |
2358 | { | |
2359 | string1++; | |
2360 | } | |
2361 | while (isspace (*string2)) | |
2362 | { | |
2363 | string2++; | |
2364 | } | |
2365 | if (*string1 != *string2) | |
2366 | { | |
2367 | break; | |
2368 | } | |
2369 | if (*string1 != '\0') | |
2370 | { | |
2371 | string1++; | |
2372 | string2++; | |
2373 | } | |
2374 | } | |
2375 | ||
2376 | switch (*string1) | |
2377 | { | |
2378 | /* Characters are non-equal unless they're both '\0'; we want to | |
2379 | make sure we get the comparison right according to our | |
2380 | comparison in the cases where one of them is '\0' or '('. */ | |
2381 | case '\0': | |
2382 | if (*string2 == '\0') | |
2383 | return 0; | |
2384 | else | |
2385 | return -1; | |
2386 | case '(': | |
2387 | if (*string2 == '\0') | |
2388 | return 1; | |
2389 | else | |
2390 | return -1; | |
2391 | default: | |
2392 | if (*string2 == '(') | |
2393 | return 1; | |
2394 | else | |
2395 | return *string1 - *string2; | |
2396 | } | |
2397 | } | |
2398 | ||
2de7ced7 DJ |
2399 | /* A simple comparison function with opposite semantics to strcmp. */ |
2400 | ||
2401 | int | |
2402 | streq (const char *lhs, const char *rhs) | |
2403 | { | |
2404 | return !strcmp (lhs, rhs); | |
2405 | } | |
c906108c | 2406 | \f |
c5aa993b | 2407 | |
c906108c | 2408 | /* |
c5aa993b JM |
2409 | ** subset_compare() |
2410 | ** Answer whether string_to_compare is a full or partial match to | |
2411 | ** template_string. The partial match must be in sequence starting | |
2412 | ** at index 0. | |
2413 | */ | |
c906108c | 2414 | int |
fba45db2 | 2415 | subset_compare (char *string_to_compare, char *template_string) |
7a292a7a SS |
2416 | { |
2417 | int match; | |
8731e58e AC |
2418 | if (template_string != (char *) NULL && string_to_compare != (char *) NULL |
2419 | && strlen (string_to_compare) <= strlen (template_string)) | |
2420 | match = | |
2421 | (strncmp | |
2422 | (template_string, string_to_compare, strlen (string_to_compare)) == 0); | |
7a292a7a SS |
2423 | else |
2424 | match = 0; | |
2425 | return match; | |
2426 | } | |
c906108c | 2427 | |
7a292a7a | 2428 | static void |
fba45db2 | 2429 | pagination_on_command (char *arg, int from_tty) |
c906108c SS |
2430 | { |
2431 | pagination_enabled = 1; | |
2432 | } | |
2433 | ||
7a292a7a | 2434 | static void |
fba45db2 | 2435 | pagination_off_command (char *arg, int from_tty) |
c906108c SS |
2436 | { |
2437 | pagination_enabled = 0; | |
2438 | } | |
c906108c | 2439 | \f |
c5aa993b | 2440 | |
c906108c | 2441 | void |
fba45db2 | 2442 | initialize_utils (void) |
c906108c SS |
2443 | { |
2444 | struct cmd_list_element *c; | |
2445 | ||
35096d9d AC |
2446 | add_setshow_uinteger_cmd ("width", class_support, &chars_per_line, _("\ |
2447 | Set number of characters gdb thinks are in a line."), _("\ | |
2448 | Show number of characters gdb thinks are in a line."), NULL, | |
2449 | set_width_command, | |
920d2a44 | 2450 | show_chars_per_line, |
35096d9d AC |
2451 | &setlist, &showlist); |
2452 | ||
2453 | add_setshow_uinteger_cmd ("height", class_support, &lines_per_page, _("\ | |
2454 | Set number of lines gdb thinks are in a page."), _("\ | |
2455 | Show number of lines gdb thinks are in a page."), NULL, | |
2456 | set_height_command, | |
920d2a44 | 2457 | show_lines_per_page, |
35096d9d | 2458 | &setlist, &showlist); |
c5aa993b | 2459 | |
c906108c SS |
2460 | init_page_info (); |
2461 | ||
5bf193a2 AC |
2462 | add_setshow_boolean_cmd ("demangle", class_support, &demangle, _("\ |
2463 | Set demangling of encoded C++/ObjC names when displaying symbols."), _("\ | |
2464 | Show demangling of encoded C++/ObjC names when displaying symbols."), NULL, | |
2465 | NULL, | |
920d2a44 | 2466 | show_demangle, |
5bf193a2 AC |
2467 | &setprintlist, &showprintlist); |
2468 | ||
2469 | add_setshow_boolean_cmd ("pagination", class_support, | |
2470 | &pagination_enabled, _("\ | |
2471 | Set state of pagination."), _("\ | |
2472 | Show state of pagination."), NULL, | |
2473 | NULL, | |
920d2a44 | 2474 | show_pagination_enabled, |
5bf193a2 | 2475 | &setlist, &showlist); |
4261bedc | 2476 | |
c906108c SS |
2477 | if (xdb_commands) |
2478 | { | |
c5aa993b | 2479 | add_com ("am", class_support, pagination_on_command, |
1bedd215 | 2480 | _("Enable pagination")); |
c5aa993b | 2481 | add_com ("sm", class_support, pagination_off_command, |
1bedd215 | 2482 | _("Disable pagination")); |
c906108c SS |
2483 | } |
2484 | ||
5bf193a2 AC |
2485 | add_setshow_boolean_cmd ("sevenbit-strings", class_support, |
2486 | &sevenbit_strings, _("\ | |
2487 | Set printing of 8-bit characters in strings as \\nnn."), _("\ | |
2488 | Show printing of 8-bit characters in strings as \\nnn."), NULL, | |
2489 | NULL, | |
920d2a44 | 2490 | show_sevenbit_strings, |
5bf193a2 AC |
2491 | &setprintlist, &showprintlist); |
2492 | ||
2493 | add_setshow_boolean_cmd ("asm-demangle", class_support, &asm_demangle, _("\ | |
2494 | Set demangling of C++/ObjC names in disassembly listings."), _("\ | |
2495 | Show demangling of C++/ObjC names in disassembly listings."), NULL, | |
2496 | NULL, | |
920d2a44 | 2497 | show_asm_demangle, |
5bf193a2 | 2498 | &setprintlist, &showprintlist); |
c906108c SS |
2499 | } |
2500 | ||
2501 | /* Machine specific function to handle SIGWINCH signal. */ | |
2502 | ||
2503 | #ifdef SIGWINCH_HANDLER_BODY | |
c5aa993b | 2504 | SIGWINCH_HANDLER_BODY |
c906108c | 2505 | #endif |
5683e87a | 2506 | /* print routines to handle variable size regs, etc. */ |
c906108c SS |
2507 | /* temporary storage using circular buffer */ |
2508 | #define NUMCELLS 16 | |
0759e0bf | 2509 | #define CELLSIZE 50 |
c5aa993b | 2510 | static char * |
fba45db2 | 2511 | get_cell (void) |
c906108c SS |
2512 | { |
2513 | static char buf[NUMCELLS][CELLSIZE]; | |
c5aa993b JM |
2514 | static int cell = 0; |
2515 | if (++cell >= NUMCELLS) | |
2516 | cell = 0; | |
c906108c SS |
2517 | return buf[cell]; |
2518 | } | |
2519 | ||
d4f3574e SS |
2520 | int |
2521 | strlen_paddr (void) | |
2522 | { | |
17a912b6 | 2523 | return (gdbarch_addr_bit (current_gdbarch) / 8 * 2); |
d4f3574e SS |
2524 | } |
2525 | ||
c5aa993b | 2526 | char * |
104c1213 | 2527 | paddr (CORE_ADDR addr) |
c906108c | 2528 | { |
17a912b6 | 2529 | return phex (addr, gdbarch_addr_bit (current_gdbarch) / 8); |
c906108c SS |
2530 | } |
2531 | ||
c5aa993b | 2532 | char * |
104c1213 | 2533 | paddr_nz (CORE_ADDR addr) |
c906108c | 2534 | { |
17a912b6 | 2535 | return phex_nz (addr, gdbarch_addr_bit (current_gdbarch) / 8); |
c906108c SS |
2536 | } |
2537 | ||
66bf4b3a AC |
2538 | const char * |
2539 | paddress (CORE_ADDR addr) | |
2540 | { | |
2541 | /* Truncate address to the size of a target address, avoiding shifts | |
2542 | larger or equal than the width of a CORE_ADDR. The local | |
2543 | variable ADDR_BIT stops the compiler reporting a shift overflow | |
2544 | when it won't occur. */ | |
2545 | /* NOTE: This assumes that the significant address information is | |
2546 | kept in the least significant bits of ADDR - the upper bits were | |
76e71323 | 2547 | either zero or sign extended. Should gdbarch_address_to_pointer or |
66bf4b3a AC |
2548 | some ADDRESS_TO_PRINTABLE() be used to do the conversion? */ |
2549 | ||
17a912b6 | 2550 | int addr_bit = gdbarch_addr_bit (current_gdbarch); |
66bf4b3a AC |
2551 | |
2552 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) | |
2553 | addr &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
2554 | return hex_string (addr); | |
2555 | } | |
2556 | ||
8cf46f62 MK |
2557 | static char * |
2558 | decimal2str (char *sign, ULONGEST addr, int width) | |
104c1213 | 2559 | { |
8cf46f62 | 2560 | /* Steal code from valprint.c:print_decimal(). Should this worry |
104c1213 JM |
2561 | about the real size of addr as the above does? */ |
2562 | unsigned long temp[3]; | |
8cf46f62 MK |
2563 | char *str = get_cell (); |
2564 | ||
104c1213 JM |
2565 | int i = 0; |
2566 | do | |
2567 | { | |
2568 | temp[i] = addr % (1000 * 1000 * 1000); | |
2569 | addr /= (1000 * 1000 * 1000); | |
2570 | i++; | |
bb599908 | 2571 | width -= 9; |
104c1213 JM |
2572 | } |
2573 | while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0]))); | |
8cf46f62 | 2574 | |
bb599908 PH |
2575 | width += 9; |
2576 | if (width < 0) | |
2577 | width = 0; | |
8cf46f62 | 2578 | |
104c1213 JM |
2579 | switch (i) |
2580 | { | |
2581 | case 1: | |
8cf46f62 | 2582 | xsnprintf (str, CELLSIZE, "%s%0*lu", sign, width, temp[0]); |
104c1213 JM |
2583 | break; |
2584 | case 2: | |
8cf46f62 MK |
2585 | xsnprintf (str, CELLSIZE, "%s%0*lu%09lu", sign, width, |
2586 | temp[1], temp[0]); | |
104c1213 JM |
2587 | break; |
2588 | case 3: | |
8cf46f62 MK |
2589 | xsnprintf (str, CELLSIZE, "%s%0*lu%09lu%09lu", sign, width, |
2590 | temp[2], temp[1], temp[0]); | |
bb599908 PH |
2591 | break; |
2592 | default: | |
2593 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 2594 | _("failed internal consistency check")); |
bb599908 | 2595 | } |
8cf46f62 MK |
2596 | |
2597 | return str; | |
bb599908 PH |
2598 | } |
2599 | ||
8cf46f62 MK |
2600 | static char * |
2601 | octal2str (ULONGEST addr, int width) | |
bb599908 PH |
2602 | { |
2603 | unsigned long temp[3]; | |
8cf46f62 MK |
2604 | char *str = get_cell (); |
2605 | ||
bb599908 PH |
2606 | int i = 0; |
2607 | do | |
2608 | { | |
2609 | temp[i] = addr % (0100000 * 0100000); | |
2610 | addr /= (0100000 * 0100000); | |
2611 | i++; | |
2612 | width -= 10; | |
2613 | } | |
2614 | while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0]))); | |
8cf46f62 | 2615 | |
bb599908 PH |
2616 | width += 10; |
2617 | if (width < 0) | |
2618 | width = 0; | |
8cf46f62 | 2619 | |
bb599908 PH |
2620 | switch (i) |
2621 | { | |
2622 | case 1: | |
2623 | if (temp[0] == 0) | |
8cf46f62 | 2624 | xsnprintf (str, CELLSIZE, "%*o", width, 0); |
bb599908 | 2625 | else |
8cf46f62 | 2626 | xsnprintf (str, CELLSIZE, "0%0*lo", width, temp[0]); |
bb599908 PH |
2627 | break; |
2628 | case 2: | |
8cf46f62 | 2629 | xsnprintf (str, CELLSIZE, "0%0*lo%010lo", width, temp[1], temp[0]); |
bb599908 PH |
2630 | break; |
2631 | case 3: | |
8cf46f62 MK |
2632 | xsnprintf (str, CELLSIZE, "0%0*lo%010lo%010lo", width, |
2633 | temp[2], temp[1], temp[0]); | |
104c1213 JM |
2634 | break; |
2635 | default: | |
8731e58e | 2636 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2637 | _("failed internal consistency check")); |
104c1213 | 2638 | } |
8cf46f62 MK |
2639 | |
2640 | return str; | |
104c1213 JM |
2641 | } |
2642 | ||
2643 | char * | |
2644 | paddr_u (CORE_ADDR addr) | |
2645 | { | |
8cf46f62 | 2646 | return decimal2str ("", addr, 0); |
104c1213 JM |
2647 | } |
2648 | ||
2649 | char * | |
2650 | paddr_d (LONGEST addr) | |
2651 | { | |
104c1213 | 2652 | if (addr < 0) |
8cf46f62 | 2653 | return decimal2str ("-", -addr, 0); |
104c1213 | 2654 | else |
8cf46f62 | 2655 | return decimal2str ("", addr, 0); |
104c1213 JM |
2656 | } |
2657 | ||
8cf46f62 | 2658 | /* Eliminate warning from compiler on 32-bit systems. */ |
5683e87a AC |
2659 | static int thirty_two = 32; |
2660 | ||
104c1213 | 2661 | char * |
5683e87a | 2662 | phex (ULONGEST l, int sizeof_l) |
104c1213 | 2663 | { |
45a1e866 | 2664 | char *str; |
8cf46f62 | 2665 | |
5683e87a | 2666 | switch (sizeof_l) |
104c1213 JM |
2667 | { |
2668 | case 8: | |
45a1e866 | 2669 | str = get_cell (); |
8cf46f62 MK |
2670 | xsnprintf (str, CELLSIZE, "%08lx%08lx", |
2671 | (unsigned long) (l >> thirty_two), | |
2672 | (unsigned long) (l & 0xffffffff)); | |
104c1213 JM |
2673 | break; |
2674 | case 4: | |
45a1e866 | 2675 | str = get_cell (); |
8cf46f62 | 2676 | xsnprintf (str, CELLSIZE, "%08lx", (unsigned long) l); |
104c1213 JM |
2677 | break; |
2678 | case 2: | |
45a1e866 | 2679 | str = get_cell (); |
8cf46f62 | 2680 | xsnprintf (str, CELLSIZE, "%04x", (unsigned short) (l & 0xffff)); |
104c1213 JM |
2681 | break; |
2682 | default: | |
45a1e866 | 2683 | str = phex (l, sizeof (l)); |
5683e87a | 2684 | break; |
104c1213 | 2685 | } |
8cf46f62 | 2686 | |
5683e87a | 2687 | return str; |
104c1213 JM |
2688 | } |
2689 | ||
c5aa993b | 2690 | char * |
5683e87a | 2691 | phex_nz (ULONGEST l, int sizeof_l) |
c906108c | 2692 | { |
faf833ca | 2693 | char *str; |
8cf46f62 | 2694 | |
5683e87a | 2695 | switch (sizeof_l) |
c906108c | 2696 | { |
c5aa993b JM |
2697 | case 8: |
2698 | { | |
5683e87a | 2699 | unsigned long high = (unsigned long) (l >> thirty_two); |
faf833ca | 2700 | str = get_cell (); |
c5aa993b | 2701 | if (high == 0) |
8cf46f62 MK |
2702 | xsnprintf (str, CELLSIZE, "%lx", |
2703 | (unsigned long) (l & 0xffffffff)); | |
c5aa993b | 2704 | else |
8cf46f62 MK |
2705 | xsnprintf (str, CELLSIZE, "%lx%08lx", high, |
2706 | (unsigned long) (l & 0xffffffff)); | |
c906108c | 2707 | break; |
c5aa993b JM |
2708 | } |
2709 | case 4: | |
faf833ca | 2710 | str = get_cell (); |
8cf46f62 | 2711 | xsnprintf (str, CELLSIZE, "%lx", (unsigned long) l); |
c5aa993b JM |
2712 | break; |
2713 | case 2: | |
faf833ca | 2714 | str = get_cell (); |
8cf46f62 | 2715 | xsnprintf (str, CELLSIZE, "%x", (unsigned short) (l & 0xffff)); |
c5aa993b JM |
2716 | break; |
2717 | default: | |
faf833ca | 2718 | str = phex_nz (l, sizeof (l)); |
5683e87a | 2719 | break; |
c906108c | 2720 | } |
8cf46f62 | 2721 | |
5683e87a | 2722 | return str; |
c906108c | 2723 | } |
ac2e2ef7 | 2724 | |
0759e0bf AC |
2725 | /* Converts a LONGEST to a C-format hexadecimal literal and stores it |
2726 | in a static string. Returns a pointer to this string. */ | |
2727 | char * | |
2728 | hex_string (LONGEST num) | |
2729 | { | |
2730 | char *result = get_cell (); | |
8cf46f62 | 2731 | xsnprintf (result, CELLSIZE, "0x%s", phex_nz (num, sizeof (num))); |
0759e0bf AC |
2732 | return result; |
2733 | } | |
2734 | ||
2735 | /* Converts a LONGEST number to a C-format hexadecimal literal and | |
2736 | stores it in a static string. Returns a pointer to this string | |
2737 | that is valid until the next call. The number is padded on the | |
2738 | left with 0s to at least WIDTH characters. */ | |
2739 | char * | |
2740 | hex_string_custom (LONGEST num, int width) | |
2741 | { | |
2742 | char *result = get_cell (); | |
2743 | char *result_end = result + CELLSIZE - 1; | |
2744 | const char *hex = phex_nz (num, sizeof (num)); | |
2745 | int hex_len = strlen (hex); | |
2746 | ||
2747 | if (hex_len > width) | |
2748 | width = hex_len; | |
2749 | if (width + 2 >= CELLSIZE) | |
2750 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 2751 | _("hex_string_custom: insufficient space to store result")); |
0759e0bf AC |
2752 | |
2753 | strcpy (result_end - width - 2, "0x"); | |
2754 | memset (result_end - width, '0', width); | |
2755 | strcpy (result_end - hex_len, hex); | |
2756 | return result_end - width - 2; | |
2757 | } | |
ac2e2ef7 | 2758 | |
bb599908 PH |
2759 | /* Convert VAL to a numeral in the given radix. For |
2760 | * radix 10, IS_SIGNED may be true, indicating a signed quantity; | |
2761 | * otherwise VAL is interpreted as unsigned. If WIDTH is supplied, | |
2762 | * it is the minimum width (0-padded if needed). USE_C_FORMAT means | |
2763 | * to use C format in all cases. If it is false, then 'x' | |
2764 | * and 'o' formats do not include a prefix (0x or leading 0). */ | |
2765 | ||
2766 | char * | |
2767 | int_string (LONGEST val, int radix, int is_signed, int width, | |
2768 | int use_c_format) | |
2769 | { | |
2770 | switch (radix) | |
2771 | { | |
2772 | case 16: | |
2773 | { | |
2774 | char *result; | |
2775 | if (width == 0) | |
2776 | result = hex_string (val); | |
2777 | else | |
2778 | result = hex_string_custom (val, width); | |
2779 | if (! use_c_format) | |
2780 | result += 2; | |
2781 | return result; | |
2782 | } | |
2783 | case 10: | |
2784 | { | |
bb599908 | 2785 | if (is_signed && val < 0) |
8cf46f62 | 2786 | return decimal2str ("-", -val, width); |
bb599908 | 2787 | else |
8cf46f62 | 2788 | return decimal2str ("", val, width); |
bb599908 PH |
2789 | } |
2790 | case 8: | |
2791 | { | |
8cf46f62 | 2792 | char *result = octal2str (val, width); |
bb599908 PH |
2793 | if (use_c_format || val == 0) |
2794 | return result; | |
2795 | else | |
2796 | return result + 1; | |
2797 | } | |
2798 | default: | |
2799 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 2800 | _("failed internal consistency check")); |
bb599908 PH |
2801 | } |
2802 | } | |
2803 | ||
03dd37c3 AC |
2804 | /* Convert a CORE_ADDR into a string. */ |
2805 | const char * | |
2806 | core_addr_to_string (const CORE_ADDR addr) | |
49b563f9 KS |
2807 | { |
2808 | char *str = get_cell (); | |
2809 | strcpy (str, "0x"); | |
2810 | strcat (str, phex (addr, sizeof (addr))); | |
2811 | return str; | |
2812 | } | |
2813 | ||
2814 | const char * | |
2815 | core_addr_to_string_nz (const CORE_ADDR addr) | |
03dd37c3 AC |
2816 | { |
2817 | char *str = get_cell (); | |
2818 | strcpy (str, "0x"); | |
2819 | strcat (str, phex_nz (addr, sizeof (addr))); | |
2820 | return str; | |
2821 | } | |
2822 | ||
2823 | /* Convert a string back into a CORE_ADDR. */ | |
2824 | CORE_ADDR | |
2825 | string_to_core_addr (const char *my_string) | |
2826 | { | |
2827 | CORE_ADDR addr = 0; | |
2828 | if (my_string[0] == '0' && tolower (my_string[1]) == 'x') | |
2829 | { | |
ced572fe | 2830 | /* Assume that it is in hex. */ |
03dd37c3 AC |
2831 | int i; |
2832 | for (i = 2; my_string[i] != '\0'; i++) | |
2833 | { | |
2834 | if (isdigit (my_string[i])) | |
2835 | addr = (my_string[i] - '0') + (addr * 16); | |
8731e58e | 2836 | else if (isxdigit (my_string[i])) |
03dd37c3 AC |
2837 | addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16); |
2838 | else | |
63f06803 | 2839 | error (_("invalid hex \"%s\""), my_string); |
03dd37c3 AC |
2840 | } |
2841 | } | |
2842 | else | |
2843 | { | |
2844 | /* Assume that it is in decimal. */ | |
2845 | int i; | |
2846 | for (i = 0; my_string[i] != '\0'; i++) | |
2847 | { | |
2848 | if (isdigit (my_string[i])) | |
2849 | addr = (my_string[i] - '0') + (addr * 10); | |
2850 | else | |
63f06803 | 2851 | error (_("invalid decimal \"%s\""), my_string); |
03dd37c3 AC |
2852 | } |
2853 | } | |
2854 | return addr; | |
2855 | } | |
58d370e0 TT |
2856 | |
2857 | char * | |
2858 | gdb_realpath (const char *filename) | |
2859 | { | |
70d35819 AC |
2860 | /* Method 1: The system has a compile time upper bound on a filename |
2861 | path. Use that and realpath() to canonicalize the name. This is | |
2862 | the most common case. Note that, if there isn't a compile time | |
2863 | upper bound, you want to avoid realpath() at all costs. */ | |
a4db0f07 | 2864 | #if defined(HAVE_REALPATH) |
70d35819 | 2865 | { |
a4db0f07 | 2866 | # if defined (PATH_MAX) |
70d35819 | 2867 | char buf[PATH_MAX]; |
a4db0f07 RH |
2868 | # define USE_REALPATH |
2869 | # elif defined (MAXPATHLEN) | |
70d35819 | 2870 | char buf[MAXPATHLEN]; |
a4db0f07 RH |
2871 | # define USE_REALPATH |
2872 | # endif | |
70d35819 | 2873 | # if defined (USE_REALPATH) |
82c0260e | 2874 | const char *rp = realpath (filename, buf); |
70d35819 AC |
2875 | if (rp == NULL) |
2876 | rp = filename; | |
2877 | return xstrdup (rp); | |
70d35819 | 2878 | # endif |
6f88d630 | 2879 | } |
a4db0f07 RH |
2880 | #endif /* HAVE_REALPATH */ |
2881 | ||
70d35819 AC |
2882 | /* Method 2: The host system (i.e., GNU) has the function |
2883 | canonicalize_file_name() which malloc's a chunk of memory and | |
2884 | returns that, use that. */ | |
2885 | #if defined(HAVE_CANONICALIZE_FILE_NAME) | |
2886 | { | |
2887 | char *rp = canonicalize_file_name (filename); | |
2888 | if (rp == NULL) | |
2889 | return xstrdup (filename); | |
2890 | else | |
2891 | return rp; | |
2892 | } | |
58d370e0 | 2893 | #endif |
70d35819 | 2894 | |
6411e720 AC |
2895 | /* FIXME: cagney/2002-11-13: |
2896 | ||
2897 | Method 2a: Use realpath() with a NULL buffer. Some systems, due | |
2898 | to the problems described in in method 3, have modified their | |
2899 | realpath() implementation so that it will allocate a buffer when | |
2900 | NULL is passed in. Before this can be used, though, some sort of | |
2901 | configure time test would need to be added. Otherwize the code | |
2902 | will likely core dump. */ | |
2903 | ||
70d35819 AC |
2904 | /* Method 3: Now we're getting desperate! The system doesn't have a |
2905 | compile time buffer size and no alternative function. Query the | |
2906 | OS, using pathconf(), for the buffer limit. Care is needed | |
2907 | though, some systems do not limit PATH_MAX (return -1 for | |
2908 | pathconf()) making it impossible to pass a correctly sized buffer | |
2909 | to realpath() (it could always overflow). On those systems, we | |
2910 | skip this. */ | |
2911 | #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA) | |
2912 | { | |
2913 | /* Find out the max path size. */ | |
2914 | long path_max = pathconf ("/", _PC_PATH_MAX); | |
2915 | if (path_max > 0) | |
2916 | { | |
2917 | /* PATH_MAX is bounded. */ | |
2918 | char *buf = alloca (path_max); | |
2919 | char *rp = realpath (filename, buf); | |
2920 | return xstrdup (rp ? rp : filename); | |
2921 | } | |
2922 | } | |
2923 | #endif | |
2924 | ||
2925 | /* This system is a lost cause, just dup the buffer. */ | |
2926 | return xstrdup (filename); | |
58d370e0 | 2927 | } |
303c8ebd JB |
2928 | |
2929 | /* Return a copy of FILENAME, with its directory prefix canonicalized | |
2930 | by gdb_realpath. */ | |
2931 | ||
2932 | char * | |
2933 | xfullpath (const char *filename) | |
2934 | { | |
2935 | const char *base_name = lbasename (filename); | |
2936 | char *dir_name; | |
2937 | char *real_path; | |
2938 | char *result; | |
2939 | ||
2940 | /* Extract the basename of filename, and return immediately | |
2941 | a copy of filename if it does not contain any directory prefix. */ | |
2942 | if (base_name == filename) | |
2943 | return xstrdup (filename); | |
2944 | ||
2945 | dir_name = alloca ((size_t) (base_name - filename + 2)); | |
2946 | /* Allocate enough space to store the dir_name + plus one extra | |
2947 | character sometimes needed under Windows (see below), and | |
2948 | then the closing \000 character */ | |
2949 | strncpy (dir_name, filename, base_name - filename); | |
2950 | dir_name[base_name - filename] = '\000'; | |
2951 | ||
2952 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
2953 | /* We need to be careful when filename is of the form 'd:foo', which | |
2954 | is equivalent of d:./foo, which is totally different from d:/foo. */ | |
8731e58e | 2955 | if (strlen (dir_name) == 2 && isalpha (dir_name[0]) && dir_name[1] == ':') |
303c8ebd JB |
2956 | { |
2957 | dir_name[2] = '.'; | |
2958 | dir_name[3] = '\000'; | |
2959 | } | |
2960 | #endif | |
2961 | ||
2962 | /* Canonicalize the directory prefix, and build the resulting | |
2963 | filename. If the dirname realpath already contains an ending | |
2964 | directory separator, avoid doubling it. */ | |
2965 | real_path = gdb_realpath (dir_name); | |
2966 | if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1])) | |
1754f103 | 2967 | result = concat (real_path, base_name, (char *)NULL); |
303c8ebd | 2968 | else |
1754f103 | 2969 | result = concat (real_path, SLASH_STRING, base_name, (char *)NULL); |
303c8ebd JB |
2970 | |
2971 | xfree (real_path); | |
2972 | return result; | |
2973 | } | |
5b5d99cf JB |
2974 | |
2975 | ||
2976 | /* This is the 32-bit CRC function used by the GNU separate debug | |
2977 | facility. An executable may contain a section named | |
2978 | .gnu_debuglink, which holds the name of a separate executable file | |
2979 | containing its debug info, and a checksum of that file's contents, | |
2980 | computed using this function. */ | |
2981 | unsigned long | |
2982 | gnu_debuglink_crc32 (unsigned long crc, unsigned char *buf, size_t len) | |
2983 | { | |
8731e58e AC |
2984 | static const unsigned long crc32_table[256] = { |
2985 | 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, | |
2986 | 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, | |
2987 | 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, | |
2988 | 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, | |
2989 | 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, | |
2990 | 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, | |
2991 | 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, | |
2992 | 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, | |
2993 | 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, | |
2994 | 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, | |
2995 | 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, | |
2996 | 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, | |
2997 | 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, | |
2998 | 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, | |
2999 | 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, | |
3000 | 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, | |
3001 | 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, | |
3002 | 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, | |
3003 | 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, | |
3004 | 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, | |
3005 | 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, | |
3006 | 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, | |
3007 | 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, | |
3008 | 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, | |
3009 | 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, | |
3010 | 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, | |
3011 | 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, | |
3012 | 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, | |
3013 | 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, | |
3014 | 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, | |
3015 | 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, | |
3016 | 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, | |
3017 | 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, | |
3018 | 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, | |
3019 | 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, | |
3020 | 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, | |
3021 | 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, | |
3022 | 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, | |
3023 | 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, | |
3024 | 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, | |
3025 | 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, | |
3026 | 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, | |
3027 | 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, | |
3028 | 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, | |
3029 | 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, | |
3030 | 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, | |
3031 | 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, | |
3032 | 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, | |
3033 | 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, | |
3034 | 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, | |
3035 | 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, | |
3036 | 0x2d02ef8d | |
3037 | }; | |
5b5d99cf JB |
3038 | unsigned char *end; |
3039 | ||
3040 | crc = ~crc & 0xffffffff; | |
3041 | for (end = buf + len; buf < end; ++buf) | |
3042 | crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8); | |
3043 | return ~crc & 0xffffffff;; | |
3044 | } | |
5b03f266 AC |
3045 | |
3046 | ULONGEST | |
3047 | align_up (ULONGEST v, int n) | |
3048 | { | |
3049 | /* Check that N is really a power of two. */ | |
3050 | gdb_assert (n && (n & (n-1)) == 0); | |
3051 | return (v + n - 1) & -n; | |
3052 | } | |
3053 | ||
3054 | ULONGEST | |
3055 | align_down (ULONGEST v, int n) | |
3056 | { | |
3057 | /* Check that N is really a power of two. */ | |
3058 | gdb_assert (n && (n & (n-1)) == 0); | |
3059 | return (v & -n); | |
3060 | } | |
ae5a43e0 DJ |
3061 | |
3062 | /* Allocation function for the libiberty hash table which uses an | |
3063 | obstack. The obstack is passed as DATA. */ | |
3064 | ||
3065 | void * | |
3066 | hashtab_obstack_allocate (void *data, size_t size, size_t count) | |
3067 | { | |
3068 | unsigned int total = size * count; | |
3069 | void *ptr = obstack_alloc ((struct obstack *) data, total); | |
3070 | memset (ptr, 0, total); | |
3071 | return ptr; | |
3072 | } | |
3073 | ||
3074 | /* Trivial deallocation function for the libiberty splay tree and hash | |
3075 | table - don't deallocate anything. Rely on later deletion of the | |
3076 | obstack. DATA will be the obstack, although it is not needed | |
3077 | here. */ | |
3078 | ||
3079 | void | |
3080 | dummy_obstack_deallocate (void *object, void *data) | |
3081 | { | |
3082 | return; | |
3083 | } | |
253c8abb DJ |
3084 | |
3085 | /* The bit offset of the highest byte in a ULONGEST, for overflow | |
3086 | checking. */ | |
3087 | ||
3088 | #define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT) | |
3089 | ||
3090 | /* True (non-zero) iff DIGIT is a valid digit in radix BASE, | |
3091 | where 2 <= BASE <= 36. */ | |
3092 | ||
3093 | static int | |
3094 | is_digit_in_base (unsigned char digit, int base) | |
3095 | { | |
3096 | if (!isalnum (digit)) | |
3097 | return 0; | |
3098 | if (base <= 10) | |
3099 | return (isdigit (digit) && digit < base + '0'); | |
3100 | else | |
3101 | return (isdigit (digit) || tolower (digit) < base - 10 + 'a'); | |
3102 | } | |
3103 | ||
3104 | static int | |
3105 | digit_to_int (unsigned char c) | |
3106 | { | |
3107 | if (isdigit (c)) | |
3108 | return c - '0'; | |
3109 | else | |
3110 | return tolower (c) - 'a' + 10; | |
3111 | } | |
3112 | ||
3113 | /* As for strtoul, but for ULONGEST results. */ | |
3114 | ||
3115 | ULONGEST | |
3116 | strtoulst (const char *num, const char **trailer, int base) | |
3117 | { | |
3118 | unsigned int high_part; | |
3119 | ULONGEST result; | |
3120 | int minus = 0; | |
3121 | int i = 0; | |
3122 | ||
3123 | /* Skip leading whitespace. */ | |
3124 | while (isspace (num[i])) | |
3125 | i++; | |
3126 | ||
3127 | /* Handle prefixes. */ | |
3128 | if (num[i] == '+') | |
3129 | i++; | |
3130 | else if (num[i] == '-') | |
3131 | { | |
3132 | minus = 1; | |
3133 | i++; | |
3134 | } | |
3135 | ||
3136 | if (base == 0 || base == 16) | |
3137 | { | |
3138 | if (num[i] == '0' && (num[i + 1] == 'x' || num[i + 1] == 'X')) | |
3139 | { | |
3140 | i += 2; | |
3141 | if (base == 0) | |
3142 | base = 16; | |
3143 | } | |
3144 | } | |
3145 | ||
3146 | if (base == 0 && num[i] == '0') | |
3147 | base = 8; | |
3148 | ||
3149 | if (base == 0) | |
3150 | base = 10; | |
3151 | ||
3152 | if (base < 2 || base > 36) | |
3153 | { | |
3154 | errno = EINVAL; | |
3155 | return 0; | |
3156 | } | |
3157 | ||
3158 | result = high_part = 0; | |
3159 | for (; is_digit_in_base (num[i], base); i += 1) | |
3160 | { | |
3161 | result = result * base + digit_to_int (num[i]); | |
3162 | high_part = high_part * base + (unsigned int) (result >> HIGH_BYTE_POSN); | |
3163 | result &= ((ULONGEST) 1 << HIGH_BYTE_POSN) - 1; | |
3164 | if (high_part > 0xff) | |
3165 | { | |
3166 | errno = ERANGE; | |
3167 | result = ~ (ULONGEST) 0; | |
3168 | high_part = 0; | |
3169 | minus = 0; | |
3170 | break; | |
3171 | } | |
3172 | } | |
3173 | ||
3174 | if (trailer != NULL) | |
3175 | *trailer = &num[i]; | |
3176 | ||
3177 | result = result + ((ULONGEST) high_part << HIGH_BYTE_POSN); | |
3178 | if (minus) | |
3179 | return -result; | |
3180 | else | |
3181 | return result; | |
3182 | } | |
e1024ff1 DJ |
3183 | |
3184 | /* Simple, portable version of dirname that does not modify its | |
3185 | argument. */ | |
3186 | ||
3187 | char * | |
3188 | ldirname (const char *filename) | |
3189 | { | |
3190 | const char *base = lbasename (filename); | |
3191 | char *dirname; | |
3192 | ||
3193 | while (base > filename && IS_DIR_SEPARATOR (base[-1])) | |
3194 | --base; | |
3195 | ||
3196 | if (base == filename) | |
3197 | return NULL; | |
3198 | ||
3199 | dirname = xmalloc (base - filename + 2); | |
3200 | memcpy (dirname, filename, base - filename); | |
3201 | ||
3202 | /* On DOS based file systems, convert "d:foo" to "d:.", so that we | |
3203 | create "d:./bar" later instead of the (different) "d:/bar". */ | |
3204 | if (base - filename == 2 && IS_ABSOLUTE_PATH (base) | |
3205 | && !IS_DIR_SEPARATOR (filename[0])) | |
3206 | dirname[base++ - filename] = '.'; | |
3207 | ||
3208 | dirname[base - filename] = '\0'; | |
3209 | return dirname; | |
3210 | } |