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1 | /* Support for GDB maintenance commands. | |
2 | ||
3 | Copyright (C) 1992-2013 Free Software Foundation, Inc. | |
4 | ||
5 | Written by Fred Fish at Cygnus Support. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
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 | |
11 | the Free Software Foundation; either version 3 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
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. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
21 | ||
22 | ||
23 | #include "defs.h" | |
24 | #include "arch-utils.h" | |
25 | #include <ctype.h> | |
26 | #include <signal.h> | |
27 | #include <sys/time.h> | |
28 | #include <time.h> | |
29 | #include "command.h" | |
30 | #include "gdbcmd.h" | |
31 | #include "symtab.h" | |
32 | #include "block.h" | |
33 | #include "gdbtypes.h" | |
34 | #include "demangle.h" | |
35 | #include "gdbcore.h" | |
36 | #include "expression.h" /* For language.h */ | |
37 | #include "language.h" | |
38 | #include "symfile.h" | |
39 | #include "objfiles.h" | |
40 | #include "value.h" | |
41 | #include "gdb_assert.h" | |
42 | #include "top.h" | |
43 | #include "timeval-utils.h" | |
44 | #include "maint.h" | |
45 | ||
46 | #include "cli/cli-decode.h" | |
47 | #include "cli/cli-utils.h" | |
48 | #include "cli/cli-setshow.h" | |
49 | ||
50 | extern void _initialize_maint_cmds (void); | |
51 | ||
52 | static void maintenance_command (char *, int); | |
53 | ||
54 | static void maintenance_internal_error (char *args, int from_tty); | |
55 | ||
56 | static void maintenance_demangle (char *, int); | |
57 | ||
58 | static void maintenance_time_display (char *, int); | |
59 | ||
60 | static void maintenance_space_display (char *, int); | |
61 | ||
62 | static void maintenance_info_command (char *, int); | |
63 | ||
64 | static void maintenance_info_sections (char *, int); | |
65 | ||
66 | static void maintenance_print_command (char *, int); | |
67 | ||
68 | static void maintenance_do_deprecate (char *, int); | |
69 | ||
70 | /* Set this to the maximum number of seconds to wait instead of waiting forever | |
71 | in target_wait(). If this timer times out, then it generates an error and | |
72 | the command is aborted. This replaces most of the need for timeouts in the | |
73 | GDB test suite, and makes it possible to distinguish between a hung target | |
74 | and one with slow communications. */ | |
75 | ||
76 | int watchdog = 0; | |
77 | static void | |
78 | show_watchdog (struct ui_file *file, int from_tty, | |
79 | struct cmd_list_element *c, const char *value) | |
80 | { | |
81 | fprintf_filtered (file, _("Watchdog timer is %s.\n"), value); | |
82 | } | |
83 | ||
84 | /* Access the maintenance subcommands. */ | |
85 | ||
86 | static void | |
87 | maintenance_command (char *args, int from_tty) | |
88 | { | |
89 | printf_unfiltered (_("\"maintenance\" must be followed by " | |
90 | "the name of a maintenance command.\n")); | |
91 | help_list (maintenancelist, "maintenance ", -1, gdb_stdout); | |
92 | } | |
93 | ||
94 | #ifndef _WIN32 | |
95 | static void | |
96 | maintenance_dump_me (char *args, int from_tty) | |
97 | { | |
98 | if (query (_("Should GDB dump core? "))) | |
99 | { | |
100 | #ifdef __DJGPP__ | |
101 | /* SIGQUIT by default is ignored, so use SIGABRT instead. */ | |
102 | signal (SIGABRT, SIG_DFL); | |
103 | kill (getpid (), SIGABRT); | |
104 | #else | |
105 | signal (SIGQUIT, SIG_DFL); | |
106 | kill (getpid (), SIGQUIT); | |
107 | #endif | |
108 | } | |
109 | } | |
110 | #endif | |
111 | ||
112 | /* Stimulate the internal error mechanism that GDB uses when an | |
113 | internal problem is detected. Allows testing of the mechanism. | |
114 | Also useful when the user wants to drop a core file but not exit | |
115 | GDB. */ | |
116 | ||
117 | static void | |
118 | maintenance_internal_error (char *args, int from_tty) | |
119 | { | |
120 | internal_error (__FILE__, __LINE__, "%s", (args == NULL ? "" : args)); | |
121 | } | |
122 | ||
123 | /* Stimulate the internal error mechanism that GDB uses when an | |
124 | internal problem is detected. Allows testing of the mechanism. | |
125 | Also useful when the user wants to drop a core file but not exit | |
126 | GDB. */ | |
127 | ||
128 | static void | |
129 | maintenance_internal_warning (char *args, int from_tty) | |
130 | { | |
131 | internal_warning (__FILE__, __LINE__, "%s", (args == NULL ? "" : args)); | |
132 | } | |
133 | ||
134 | /* Someday we should allow demangling for things other than just | |
135 | explicit strings. For example, we might want to be able to specify | |
136 | the address of a string in either GDB's process space or the | |
137 | debuggee's process space, and have gdb fetch and demangle that | |
138 | string. If we have a char* pointer "ptr" that points to a string, | |
139 | we might want to be able to given just the name and have GDB | |
140 | demangle and print what it points to, etc. (FIXME) */ | |
141 | ||
142 | static void | |
143 | maintenance_demangle (char *args, int from_tty) | |
144 | { | |
145 | char *demangled; | |
146 | ||
147 | if (args == NULL || *args == '\0') | |
148 | { | |
149 | printf_unfiltered (_("\"maintenance demangle\" takes " | |
150 | "an argument to demangle.\n")); | |
151 | } | |
152 | else | |
153 | { | |
154 | demangled = language_demangle (current_language, args, | |
155 | DMGL_ANSI | DMGL_PARAMS); | |
156 | if (demangled != NULL) | |
157 | { | |
158 | printf_unfiltered ("%s\n", demangled); | |
159 | xfree (demangled); | |
160 | } | |
161 | else | |
162 | { | |
163 | printf_unfiltered (_("Can't demangle \"%s\"\n"), args); | |
164 | } | |
165 | } | |
166 | } | |
167 | ||
168 | static void | |
169 | maintenance_time_display (char *args, int from_tty) | |
170 | { | |
171 | if (args == NULL || *args == '\0') | |
172 | printf_unfiltered (_("\"maintenance time\" takes a numeric argument.\n")); | |
173 | else | |
174 | set_per_command_time (strtol (args, NULL, 10)); | |
175 | } | |
176 | ||
177 | static void | |
178 | maintenance_space_display (char *args, int from_tty) | |
179 | { | |
180 | if (args == NULL || *args == '\0') | |
181 | printf_unfiltered ("\"maintenance space\" takes a numeric argument.\n"); | |
182 | else | |
183 | set_per_command_space (strtol (args, NULL, 10)); | |
184 | } | |
185 | ||
186 | /* The "maintenance info" command is defined as a prefix, with | |
187 | allow_unknown 0. Therefore, its own definition is called only for | |
188 | "maintenance info" with no args. */ | |
189 | ||
190 | static void | |
191 | maintenance_info_command (char *arg, int from_tty) | |
192 | { | |
193 | printf_unfiltered (_("\"maintenance info\" must be followed " | |
194 | "by the name of an info command.\n")); | |
195 | help_list (maintenanceinfolist, "maintenance info ", -1, gdb_stdout); | |
196 | } | |
197 | ||
198 | /* Mini tokenizing lexer for 'maint info sections' command. */ | |
199 | ||
200 | static int | |
201 | match_substring (const char *string, const char *substr) | |
202 | { | |
203 | int substr_len = strlen(substr); | |
204 | const char *tok; | |
205 | ||
206 | while ((tok = strstr (string, substr)) != NULL) | |
207 | { | |
208 | /* Got a partial match. Is it a whole word? */ | |
209 | if (tok == string | |
210 | || tok[-1] == ' ' | |
211 | || tok[-1] == '\t') | |
212 | { | |
213 | /* Token is delimited at the front... */ | |
214 | if (tok[substr_len] == ' ' | |
215 | || tok[substr_len] == '\t' | |
216 | || tok[substr_len] == '\0') | |
217 | { | |
218 | /* Token is delimited at the rear. Got a whole-word match. */ | |
219 | return 1; | |
220 | } | |
221 | } | |
222 | /* Token didn't match as a whole word. Advance and try again. */ | |
223 | string = tok + 1; | |
224 | } | |
225 | return 0; | |
226 | } | |
227 | ||
228 | static int | |
229 | match_bfd_flags (char *string, flagword flags) | |
230 | { | |
231 | if (flags & SEC_ALLOC) | |
232 | if (match_substring (string, "ALLOC")) | |
233 | return 1; | |
234 | if (flags & SEC_LOAD) | |
235 | if (match_substring (string, "LOAD")) | |
236 | return 1; | |
237 | if (flags & SEC_RELOC) | |
238 | if (match_substring (string, "RELOC")) | |
239 | return 1; | |
240 | if (flags & SEC_READONLY) | |
241 | if (match_substring (string, "READONLY")) | |
242 | return 1; | |
243 | if (flags & SEC_CODE) | |
244 | if (match_substring (string, "CODE")) | |
245 | return 1; | |
246 | if (flags & SEC_DATA) | |
247 | if (match_substring (string, "DATA")) | |
248 | return 1; | |
249 | if (flags & SEC_ROM) | |
250 | if (match_substring (string, "ROM")) | |
251 | return 1; | |
252 | if (flags & SEC_CONSTRUCTOR) | |
253 | if (match_substring (string, "CONSTRUCTOR")) | |
254 | return 1; | |
255 | if (flags & SEC_HAS_CONTENTS) | |
256 | if (match_substring (string, "HAS_CONTENTS")) | |
257 | return 1; | |
258 | if (flags & SEC_NEVER_LOAD) | |
259 | if (match_substring (string, "NEVER_LOAD")) | |
260 | return 1; | |
261 | if (flags & SEC_COFF_SHARED_LIBRARY) | |
262 | if (match_substring (string, "COFF_SHARED_LIBRARY")) | |
263 | return 1; | |
264 | if (flags & SEC_IS_COMMON) | |
265 | if (match_substring (string, "IS_COMMON")) | |
266 | return 1; | |
267 | ||
268 | return 0; | |
269 | } | |
270 | ||
271 | static void | |
272 | print_bfd_flags (flagword flags) | |
273 | { | |
274 | if (flags & SEC_ALLOC) | |
275 | printf_filtered (" ALLOC"); | |
276 | if (flags & SEC_LOAD) | |
277 | printf_filtered (" LOAD"); | |
278 | if (flags & SEC_RELOC) | |
279 | printf_filtered (" RELOC"); | |
280 | if (flags & SEC_READONLY) | |
281 | printf_filtered (" READONLY"); | |
282 | if (flags & SEC_CODE) | |
283 | printf_filtered (" CODE"); | |
284 | if (flags & SEC_DATA) | |
285 | printf_filtered (" DATA"); | |
286 | if (flags & SEC_ROM) | |
287 | printf_filtered (" ROM"); | |
288 | if (flags & SEC_CONSTRUCTOR) | |
289 | printf_filtered (" CONSTRUCTOR"); | |
290 | if (flags & SEC_HAS_CONTENTS) | |
291 | printf_filtered (" HAS_CONTENTS"); | |
292 | if (flags & SEC_NEVER_LOAD) | |
293 | printf_filtered (" NEVER_LOAD"); | |
294 | if (flags & SEC_COFF_SHARED_LIBRARY) | |
295 | printf_filtered (" COFF_SHARED_LIBRARY"); | |
296 | if (flags & SEC_IS_COMMON) | |
297 | printf_filtered (" IS_COMMON"); | |
298 | } | |
299 | ||
300 | static void | |
301 | maint_print_section_info (const char *name, flagword flags, | |
302 | CORE_ADDR addr, CORE_ADDR endaddr, | |
303 | unsigned long filepos, int addr_size) | |
304 | { | |
305 | printf_filtered (" %s", hex_string_custom (addr, addr_size)); | |
306 | printf_filtered ("->%s", hex_string_custom (endaddr, addr_size)); | |
307 | printf_filtered (" at %s", | |
308 | hex_string_custom ((unsigned long) filepos, 8)); | |
309 | printf_filtered (": %s", name); | |
310 | print_bfd_flags (flags); | |
311 | printf_filtered ("\n"); | |
312 | } | |
313 | ||
314 | static void | |
315 | print_bfd_section_info (bfd *abfd, | |
316 | asection *asect, | |
317 | void *arg) | |
318 | { | |
319 | flagword flags = bfd_get_section_flags (abfd, asect); | |
320 | const char *name = bfd_section_name (abfd, asect); | |
321 | ||
322 | if (arg == NULL || *((char *) arg) == '\0' | |
323 | || match_substring ((char *) arg, name) | |
324 | || match_bfd_flags ((char *) arg, flags)) | |
325 | { | |
326 | struct gdbarch *gdbarch = gdbarch_from_bfd (abfd); | |
327 | int addr_size = gdbarch_addr_bit (gdbarch) / 8; | |
328 | CORE_ADDR addr, endaddr; | |
329 | ||
330 | addr = bfd_section_vma (abfd, asect); | |
331 | endaddr = addr + bfd_section_size (abfd, asect); | |
332 | printf_filtered (" [%d] ", gdb_bfd_section_index (abfd, asect)); | |
333 | maint_print_section_info (name, flags, addr, endaddr, | |
334 | asect->filepos, addr_size); | |
335 | } | |
336 | } | |
337 | ||
338 | static void | |
339 | print_objfile_section_info (bfd *abfd, | |
340 | struct obj_section *asect, | |
341 | char *string) | |
342 | { | |
343 | flagword flags = bfd_get_section_flags (abfd, asect->the_bfd_section); | |
344 | const char *name = bfd_section_name (abfd, asect->the_bfd_section); | |
345 | ||
346 | if (string == NULL || *string == '\0' | |
347 | || match_substring (string, name) | |
348 | || match_bfd_flags (string, flags)) | |
349 | { | |
350 | struct gdbarch *gdbarch = gdbarch_from_bfd (abfd); | |
351 | int addr_size = gdbarch_addr_bit (gdbarch) / 8; | |
352 | ||
353 | maint_print_section_info (name, flags, | |
354 | obj_section_addr (asect), | |
355 | obj_section_endaddr (asect), | |
356 | asect->the_bfd_section->filepos, | |
357 | addr_size); | |
358 | } | |
359 | } | |
360 | ||
361 | static void | |
362 | maintenance_info_sections (char *arg, int from_tty) | |
363 | { | |
364 | if (exec_bfd) | |
365 | { | |
366 | printf_filtered (_("Exec file:\n")); | |
367 | printf_filtered (" `%s', ", bfd_get_filename (exec_bfd)); | |
368 | wrap_here (" "); | |
369 | printf_filtered (_("file type %s.\n"), bfd_get_target (exec_bfd)); | |
370 | if (arg && *arg && match_substring (arg, "ALLOBJ")) | |
371 | { | |
372 | struct objfile *ofile; | |
373 | struct obj_section *osect; | |
374 | ||
375 | /* Only this function cares about the 'ALLOBJ' argument; | |
376 | if 'ALLOBJ' is the only argument, discard it rather than | |
377 | passing it down to print_objfile_section_info (which | |
378 | wouldn't know how to handle it). */ | |
379 | if (strcmp (arg, "ALLOBJ") == 0) | |
380 | arg = NULL; | |
381 | ||
382 | ALL_OBJFILES (ofile) | |
383 | { | |
384 | printf_filtered (_(" Object file: %s\n"), | |
385 | bfd_get_filename (ofile->obfd)); | |
386 | ALL_OBJFILE_OSECTIONS (ofile, osect) | |
387 | { | |
388 | print_objfile_section_info (ofile->obfd, osect, arg); | |
389 | } | |
390 | } | |
391 | } | |
392 | else | |
393 | bfd_map_over_sections (exec_bfd, print_bfd_section_info, arg); | |
394 | } | |
395 | ||
396 | if (core_bfd) | |
397 | { | |
398 | printf_filtered (_("Core file:\n")); | |
399 | printf_filtered (" `%s', ", bfd_get_filename (core_bfd)); | |
400 | wrap_here (" "); | |
401 | printf_filtered (_("file type %s.\n"), bfd_get_target (core_bfd)); | |
402 | bfd_map_over_sections (core_bfd, print_bfd_section_info, arg); | |
403 | } | |
404 | } | |
405 | ||
406 | static void | |
407 | maintenance_print_statistics (char *args, int from_tty) | |
408 | { | |
409 | print_objfile_statistics (); | |
410 | print_symbol_bcache_statistics (); | |
411 | } | |
412 | ||
413 | static void | |
414 | maintenance_print_architecture (char *args, int from_tty) | |
415 | { | |
416 | struct gdbarch *gdbarch = get_current_arch (); | |
417 | ||
418 | if (args == NULL) | |
419 | gdbarch_dump (gdbarch, gdb_stdout); | |
420 | else | |
421 | { | |
422 | struct cleanup *cleanups; | |
423 | struct ui_file *file = gdb_fopen (args, "w"); | |
424 | ||
425 | if (file == NULL) | |
426 | perror_with_name (_("maintenance print architecture")); | |
427 | cleanups = make_cleanup_ui_file_delete (file); | |
428 | gdbarch_dump (gdbarch, file); | |
429 | do_cleanups (cleanups); | |
430 | } | |
431 | } | |
432 | ||
433 | /* The "maintenance print" command is defined as a prefix, with | |
434 | allow_unknown 0. Therefore, its own definition is called only for | |
435 | "maintenance print" with no args. */ | |
436 | ||
437 | static void | |
438 | maintenance_print_command (char *arg, int from_tty) | |
439 | { | |
440 | printf_unfiltered (_("\"maintenance print\" must be followed " | |
441 | "by the name of a print command.\n")); | |
442 | help_list (maintenanceprintlist, "maintenance print ", -1, gdb_stdout); | |
443 | } | |
444 | ||
445 | /* The "maintenance translate-address" command converts a section and address | |
446 | to a symbol. This can be called in two ways: | |
447 | maintenance translate-address <secname> <addr> | |
448 | or maintenance translate-address <addr>. */ | |
449 | ||
450 | static void | |
451 | maintenance_translate_address (char *arg, int from_tty) | |
452 | { | |
453 | CORE_ADDR address; | |
454 | struct obj_section *sect; | |
455 | char *p; | |
456 | struct bound_minimal_symbol sym; | |
457 | struct objfile *objfile; | |
458 | ||
459 | if (arg == NULL || *arg == 0) | |
460 | error (_("requires argument (address or section + address)")); | |
461 | ||
462 | sect = NULL; | |
463 | p = arg; | |
464 | ||
465 | if (!isdigit (*p)) | |
466 | { /* See if we have a valid section name. */ | |
467 | while (*p && !isspace (*p)) /* Find end of section name. */ | |
468 | p++; | |
469 | if (*p == '\000') /* End of command? */ | |
470 | error (_("Need to specify <section-name> and <address>")); | |
471 | *p++ = '\000'; | |
472 | p = skip_spaces (p); | |
473 | ||
474 | ALL_OBJSECTIONS (objfile, sect) | |
475 | { | |
476 | if (strcmp (sect->the_bfd_section->name, arg) == 0) | |
477 | break; | |
478 | } | |
479 | ||
480 | if (!objfile) | |
481 | error (_("Unknown section %s."), arg); | |
482 | } | |
483 | ||
484 | address = parse_and_eval_address (p); | |
485 | ||
486 | if (sect) | |
487 | sym = lookup_minimal_symbol_by_pc_section (address, sect); | |
488 | else | |
489 | sym = lookup_minimal_symbol_by_pc (address); | |
490 | ||
491 | if (sym.minsym) | |
492 | { | |
493 | const char *symbol_name = SYMBOL_PRINT_NAME (sym.minsym); | |
494 | const char *symbol_offset | |
495 | = pulongest (address - SYMBOL_VALUE_ADDRESS (sym.minsym)); | |
496 | ||
497 | sect = SYMBOL_OBJ_SECTION(sym.objfile, sym.minsym); | |
498 | if (sect != NULL) | |
499 | { | |
500 | const char *section_name; | |
501 | const char *obj_name; | |
502 | ||
503 | gdb_assert (sect->the_bfd_section && sect->the_bfd_section->name); | |
504 | section_name = sect->the_bfd_section->name; | |
505 | ||
506 | gdb_assert (sect->objfile && objfile_name (sect->objfile)); | |
507 | obj_name = objfile_name (sect->objfile); | |
508 | ||
509 | if (MULTI_OBJFILE_P ()) | |
510 | printf_filtered (_("%s + %s in section %s of %s\n"), | |
511 | symbol_name, symbol_offset, | |
512 | section_name, obj_name); | |
513 | else | |
514 | printf_filtered (_("%s + %s in section %s\n"), | |
515 | symbol_name, symbol_offset, section_name); | |
516 | } | |
517 | else | |
518 | printf_filtered (_("%s + %s\n"), symbol_name, symbol_offset); | |
519 | } | |
520 | else if (sect) | |
521 | printf_filtered (_("no symbol at %s:%s\n"), | |
522 | sect->the_bfd_section->name, hex_string (address)); | |
523 | else | |
524 | printf_filtered (_("no symbol at %s\n"), hex_string (address)); | |
525 | ||
526 | return; | |
527 | } | |
528 | ||
529 | ||
530 | /* When a command is deprecated the user will be warned the first time | |
531 | the command is used. If possible, a replacement will be | |
532 | offered. */ | |
533 | ||
534 | static void | |
535 | maintenance_deprecate (char *args, int from_tty) | |
536 | { | |
537 | if (args == NULL || *args == '\0') | |
538 | { | |
539 | printf_unfiltered (_("\"maintenance deprecate\" takes an argument,\n\ | |
540 | the command you want to deprecate, and optionally the replacement command\n\ | |
541 | enclosed in quotes.\n")); | |
542 | } | |
543 | ||
544 | maintenance_do_deprecate (args, 1); | |
545 | ||
546 | } | |
547 | ||
548 | ||
549 | static void | |
550 | maintenance_undeprecate (char *args, int from_tty) | |
551 | { | |
552 | if (args == NULL || *args == '\0') | |
553 | { | |
554 | printf_unfiltered (_("\"maintenance undeprecate\" takes an argument, \n\ | |
555 | the command you want to undeprecate.\n")); | |
556 | } | |
557 | ||
558 | maintenance_do_deprecate (args, 0); | |
559 | ||
560 | } | |
561 | ||
562 | /* You really shouldn't be using this. It is just for the testsuite. | |
563 | Rather, you should use deprecate_cmd() when the command is created | |
564 | in _initialize_blah(). | |
565 | ||
566 | This function deprecates a command and optionally assigns it a | |
567 | replacement. */ | |
568 | ||
569 | static void | |
570 | maintenance_do_deprecate (char *text, int deprecate) | |
571 | { | |
572 | struct cmd_list_element *alias = NULL; | |
573 | struct cmd_list_element *prefix_cmd = NULL; | |
574 | struct cmd_list_element *cmd = NULL; | |
575 | ||
576 | char *start_ptr = NULL; | |
577 | char *end_ptr = NULL; | |
578 | int len; | |
579 | char *replacement = NULL; | |
580 | ||
581 | if (text == NULL) | |
582 | return; | |
583 | ||
584 | if (!lookup_cmd_composition (text, &alias, &prefix_cmd, &cmd)) | |
585 | { | |
586 | printf_filtered (_("Can't find command '%s' to deprecate.\n"), text); | |
587 | return; | |
588 | } | |
589 | ||
590 | if (deprecate) | |
591 | { | |
592 | /* Look for a replacement command. */ | |
593 | start_ptr = strchr (text, '\"'); | |
594 | if (start_ptr != NULL) | |
595 | { | |
596 | start_ptr++; | |
597 | end_ptr = strrchr (start_ptr, '\"'); | |
598 | if (end_ptr != NULL) | |
599 | { | |
600 | len = end_ptr - start_ptr; | |
601 | start_ptr[len] = '\0'; | |
602 | replacement = xstrdup (start_ptr); | |
603 | } | |
604 | } | |
605 | } | |
606 | ||
607 | if (!start_ptr || !end_ptr) | |
608 | replacement = NULL; | |
609 | ||
610 | ||
611 | /* If they used an alias, we only want to deprecate the alias. | |
612 | ||
613 | Note the MALLOCED_REPLACEMENT test. If the command's replacement | |
614 | string was allocated at compile time we don't want to free the | |
615 | memory. */ | |
616 | if (alias) | |
617 | { | |
618 | if (alias->flags & MALLOCED_REPLACEMENT) | |
619 | xfree (alias->replacement); | |
620 | ||
621 | if (deprecate) | |
622 | alias->flags |= (DEPRECATED_WARN_USER | CMD_DEPRECATED); | |
623 | else | |
624 | alias->flags &= ~(DEPRECATED_WARN_USER | CMD_DEPRECATED); | |
625 | alias->replacement = replacement; | |
626 | alias->flags |= MALLOCED_REPLACEMENT; | |
627 | return; | |
628 | } | |
629 | else if (cmd) | |
630 | { | |
631 | if (cmd->flags & MALLOCED_REPLACEMENT) | |
632 | xfree (cmd->replacement); | |
633 | ||
634 | if (deprecate) | |
635 | cmd->flags |= (DEPRECATED_WARN_USER | CMD_DEPRECATED); | |
636 | else | |
637 | cmd->flags &= ~(DEPRECATED_WARN_USER | CMD_DEPRECATED); | |
638 | cmd->replacement = replacement; | |
639 | cmd->flags |= MALLOCED_REPLACEMENT; | |
640 | return; | |
641 | } | |
642 | xfree (replacement); | |
643 | } | |
644 | ||
645 | /* Maintenance set/show framework. */ | |
646 | ||
647 | struct cmd_list_element *maintenance_set_cmdlist; | |
648 | struct cmd_list_element *maintenance_show_cmdlist; | |
649 | ||
650 | static void | |
651 | maintenance_set_cmd (char *args, int from_tty) | |
652 | { | |
653 | printf_unfiltered (_("\"maintenance set\" must be followed " | |
654 | "by the name of a set command.\n")); | |
655 | help_list (maintenance_set_cmdlist, "maintenance set ", -1, gdb_stdout); | |
656 | } | |
657 | ||
658 | static void | |
659 | maintenance_show_cmd (char *args, int from_tty) | |
660 | { | |
661 | cmd_show_list (maintenance_show_cmdlist, from_tty, ""); | |
662 | } | |
663 | ||
664 | /* Profiling support. */ | |
665 | ||
666 | static int maintenance_profile_p; | |
667 | static void | |
668 | show_maintenance_profile_p (struct ui_file *file, int from_tty, | |
669 | struct cmd_list_element *c, const char *value) | |
670 | { | |
671 | fprintf_filtered (file, _("Internal profiling is %s.\n"), value); | |
672 | } | |
673 | ||
674 | #ifdef HAVE__ETEXT | |
675 | extern char _etext; | |
676 | #define TEXTEND &_etext | |
677 | #elif defined (HAVE_ETEXT) | |
678 | extern char etext; | |
679 | #define TEXTEND &etext | |
680 | #endif | |
681 | ||
682 | #if defined (HAVE_MONSTARTUP) && defined (HAVE__MCLEANUP) && defined (TEXTEND) | |
683 | ||
684 | static int profiling_state; | |
685 | ||
686 | static void | |
687 | mcleanup_wrapper (void) | |
688 | { | |
689 | extern void _mcleanup (void); | |
690 | ||
691 | if (profiling_state) | |
692 | _mcleanup (); | |
693 | } | |
694 | ||
695 | static void | |
696 | maintenance_set_profile_cmd (char *args, int from_tty, | |
697 | struct cmd_list_element *c) | |
698 | { | |
699 | if (maintenance_profile_p == profiling_state) | |
700 | return; | |
701 | ||
702 | profiling_state = maintenance_profile_p; | |
703 | ||
704 | if (maintenance_profile_p) | |
705 | { | |
706 | static int profiling_initialized; | |
707 | ||
708 | extern void monstartup (unsigned long, unsigned long); | |
709 | extern int main(); | |
710 | ||
711 | if (!profiling_initialized) | |
712 | { | |
713 | atexit (mcleanup_wrapper); | |
714 | profiling_initialized = 1; | |
715 | } | |
716 | ||
717 | /* "main" is now always the first function in the text segment, so use | |
718 | its address for monstartup. */ | |
719 | monstartup ((unsigned long) &main, (unsigned long) TEXTEND); | |
720 | } | |
721 | else | |
722 | { | |
723 | extern void _mcleanup (void); | |
724 | ||
725 | _mcleanup (); | |
726 | } | |
727 | } | |
728 | #else | |
729 | static void | |
730 | maintenance_set_profile_cmd (char *args, int from_tty, | |
731 | struct cmd_list_element *c) | |
732 | { | |
733 | error (_("Profiling support is not available on this system.")); | |
734 | } | |
735 | #endif | |
736 | \f | |
737 | /* If nonzero, display time usage both at startup and for each command. */ | |
738 | ||
739 | static int per_command_time; | |
740 | ||
741 | /* If nonzero, display space usage both at startup and for each command. */ | |
742 | ||
743 | static int per_command_space; | |
744 | ||
745 | /* If nonzero, display basic symtab stats for each command. */ | |
746 | ||
747 | static int per_command_symtab; | |
748 | ||
749 | /* mt per-command commands. */ | |
750 | ||
751 | static struct cmd_list_element *per_command_setlist; | |
752 | static struct cmd_list_element *per_command_showlist; | |
753 | ||
754 | /* Records a run time and space usage to be used as a base for | |
755 | reporting elapsed time or change in space. */ | |
756 | ||
757 | struct cmd_stats | |
758 | { | |
759 | /* Zero if the saved time is from the beginning of GDB execution. | |
760 | One if from the beginning of an individual command execution. */ | |
761 | int msg_type; | |
762 | /* Track whether the stat was enabled at the start of the command | |
763 | so that we can avoid printing anything if it gets turned on by | |
764 | the current command. */ | |
765 | int time_enabled : 1; | |
766 | int space_enabled : 1; | |
767 | int symtab_enabled : 1; | |
768 | long start_cpu_time; | |
769 | struct timeval start_wall_time; | |
770 | long start_space; | |
771 | /* Total number of symtabs (over all objfiles). */ | |
772 | int start_nr_symtabs; | |
773 | /* Of those, a count of just the primary ones. */ | |
774 | int start_nr_primary_symtabs; | |
775 | /* Total number of blocks. */ | |
776 | int start_nr_blocks; | |
777 | }; | |
778 | ||
779 | /* Set whether to display time statistics to NEW_VALUE | |
780 | (non-zero means true). */ | |
781 | ||
782 | void | |
783 | set_per_command_time (int new_value) | |
784 | { | |
785 | per_command_time = new_value; | |
786 | } | |
787 | ||
788 | /* Set whether to display space statistics to NEW_VALUE | |
789 | (non-zero means true). */ | |
790 | ||
791 | void | |
792 | set_per_command_space (int new_value) | |
793 | { | |
794 | per_command_space = new_value; | |
795 | } | |
796 | ||
797 | /* Count the number of symtabs and blocks. */ | |
798 | ||
799 | static void | |
800 | count_symtabs_and_blocks (int *nr_symtabs_ptr, int *nr_primary_symtabs_ptr, | |
801 | int *nr_blocks_ptr) | |
802 | { | |
803 | struct objfile *o; | |
804 | struct symtab *s; | |
805 | int nr_symtabs = 0; | |
806 | int nr_primary_symtabs = 0; | |
807 | int nr_blocks = 0; | |
808 | ||
809 | ALL_SYMTABS (o, s) | |
810 | { | |
811 | ++nr_symtabs; | |
812 | if (s->primary) | |
813 | { | |
814 | ++nr_primary_symtabs; | |
815 | nr_blocks += BLOCKVECTOR_NBLOCKS (BLOCKVECTOR (s)); | |
816 | } | |
817 | } | |
818 | ||
819 | *nr_symtabs_ptr = nr_symtabs; | |
820 | *nr_primary_symtabs_ptr = nr_primary_symtabs; | |
821 | *nr_blocks_ptr = nr_blocks; | |
822 | } | |
823 | ||
824 | /* As indicated by display_time and display_space, report GDB's elapsed time | |
825 | and space usage from the base time and space provided in ARG, which | |
826 | must be a pointer to a struct cmd_stat. This function is intended | |
827 | to be called as a cleanup. */ | |
828 | ||
829 | static void | |
830 | report_command_stats (void *arg) | |
831 | { | |
832 | struct cmd_stats *start_stats = (struct cmd_stats *) arg; | |
833 | int msg_type = start_stats->msg_type; | |
834 | ||
835 | if (start_stats->time_enabled) | |
836 | { | |
837 | long cmd_time = get_run_time () - start_stats->start_cpu_time; | |
838 | struct timeval now_wall_time, delta_wall_time, wait_time; | |
839 | ||
840 | gettimeofday (&now_wall_time, NULL); | |
841 | timeval_sub (&delta_wall_time, | |
842 | &now_wall_time, &start_stats->start_wall_time); | |
843 | ||
844 | /* Subtract time spend in prompt_for_continue from walltime. */ | |
845 | wait_time = get_prompt_for_continue_wait_time (); | |
846 | timeval_sub (&delta_wall_time, &delta_wall_time, &wait_time); | |
847 | ||
848 | printf_unfiltered (msg_type == 0 | |
849 | ? _("Startup time: %ld.%06ld (cpu), %ld.%06ld (wall)\n") | |
850 | : _("Command execution time: %ld.%06ld (cpu), %ld.%06ld (wall)\n"), | |
851 | cmd_time / 1000000, cmd_time % 1000000, | |
852 | (long) delta_wall_time.tv_sec, | |
853 | (long) delta_wall_time.tv_usec); | |
854 | } | |
855 | ||
856 | if (start_stats->space_enabled) | |
857 | { | |
858 | #ifdef HAVE_SBRK | |
859 | char *lim = (char *) sbrk (0); | |
860 | ||
861 | long space_now = lim - lim_at_start; | |
862 | long space_diff = space_now - start_stats->start_space; | |
863 | ||
864 | printf_unfiltered (msg_type == 0 | |
865 | ? _("Space used: %ld (%s%ld during startup)\n") | |
866 | : _("Space used: %ld (%s%ld for this command)\n"), | |
867 | space_now, | |
868 | (space_diff >= 0 ? "+" : ""), | |
869 | space_diff); | |
870 | #endif | |
871 | } | |
872 | ||
873 | if (start_stats->symtab_enabled) | |
874 | { | |
875 | int nr_symtabs, nr_primary_symtabs, nr_blocks; | |
876 | ||
877 | count_symtabs_and_blocks (&nr_symtabs, &nr_primary_symtabs, &nr_blocks); | |
878 | printf_unfiltered (_("#symtabs: %d (+%d)," | |
879 | " #primary symtabs: %d (+%d)," | |
880 | " #blocks: %d (+%d)\n"), | |
881 | nr_symtabs, | |
882 | nr_symtabs - start_stats->start_nr_symtabs, | |
883 | nr_primary_symtabs, | |
884 | nr_primary_symtabs - start_stats->start_nr_primary_symtabs, | |
885 | nr_blocks, | |
886 | nr_blocks - start_stats->start_nr_blocks); | |
887 | } | |
888 | } | |
889 | ||
890 | /* Create a cleanup that reports time and space used since its creation. | |
891 | MSG_TYPE is zero for gdb startup, otherwise it is one(1) to report | |
892 | data for individual commands. */ | |
893 | ||
894 | struct cleanup * | |
895 | make_command_stats_cleanup (int msg_type) | |
896 | { | |
897 | struct cmd_stats *new_stat; | |
898 | ||
899 | /* Early exit if we're not reporting any stats. */ | |
900 | if (!per_command_time | |
901 | && !per_command_space | |
902 | && !per_command_symtab) | |
903 | return make_cleanup (null_cleanup, 0); | |
904 | ||
905 | new_stat = XZALLOC (struct cmd_stats); | |
906 | ||
907 | new_stat->msg_type = msg_type; | |
908 | ||
909 | if (per_command_space) | |
910 | { | |
911 | #ifdef HAVE_SBRK | |
912 | char *lim = (char *) sbrk (0); | |
913 | new_stat->start_space = lim - lim_at_start; | |
914 | new_stat->space_enabled = 1; | |
915 | #endif | |
916 | } | |
917 | ||
918 | if (per_command_time) | |
919 | { | |
920 | new_stat->start_cpu_time = get_run_time (); | |
921 | gettimeofday (&new_stat->start_wall_time, NULL); | |
922 | new_stat->time_enabled = 1; | |
923 | } | |
924 | ||
925 | if (per_command_symtab) | |
926 | { | |
927 | int nr_symtabs, nr_primary_symtabs, nr_blocks; | |
928 | ||
929 | count_symtabs_and_blocks (&nr_symtabs, &nr_primary_symtabs, &nr_blocks); | |
930 | new_stat->start_nr_symtabs = nr_symtabs; | |
931 | new_stat->start_nr_primary_symtabs = nr_primary_symtabs; | |
932 | new_stat->start_nr_blocks = nr_blocks; | |
933 | new_stat->symtab_enabled = 1; | |
934 | } | |
935 | ||
936 | /* Initalize timer to keep track of how long we waited for the user. */ | |
937 | reset_prompt_for_continue_wait_time (); | |
938 | ||
939 | return make_cleanup_dtor (report_command_stats, new_stat, xfree); | |
940 | } | |
941 | ||
942 | /* Handle unknown "mt set per-command" arguments. | |
943 | In this case have "mt set per-command on|off" affect every setting. */ | |
944 | ||
945 | static void | |
946 | set_per_command_cmd (char *args, int from_tty) | |
947 | { | |
948 | struct cmd_list_element *list; | |
949 | size_t length; | |
950 | int val; | |
951 | ||
952 | val = parse_cli_boolean_value (args); | |
953 | if (val < 0) | |
954 | error (_("Bad value for 'mt set per-command no'.")); | |
955 | ||
956 | for (list = per_command_setlist; list != NULL; list = list->next) | |
957 | if (list->var_type == var_boolean) | |
958 | { | |
959 | gdb_assert (list->type == set_cmd); | |
960 | do_set_command (args, from_tty, list); | |
961 | } | |
962 | } | |
963 | ||
964 | /* Command "show per-command" displays summary of all the current | |
965 | "show per-command " settings. */ | |
966 | ||
967 | static void | |
968 | show_per_command_cmd (char *args, int from_tty) | |
969 | { | |
970 | cmd_show_list (per_command_showlist, from_tty, ""); | |
971 | } | |
972 | \f | |
973 | void | |
974 | _initialize_maint_cmds (void) | |
975 | { | |
976 | add_prefix_cmd ("maintenance", class_maintenance, maintenance_command, _("\ | |
977 | Commands for use by GDB maintainers.\n\ | |
978 | Includes commands to dump specific internal GDB structures in\n\ | |
979 | a human readable form, to cause GDB to deliberately dump core,\n\ | |
980 | to test internal functions such as the C++/ObjC demangler, etc."), | |
981 | &maintenancelist, "maintenance ", 0, | |
982 | &cmdlist); | |
983 | ||
984 | add_com_alias ("mt", "maintenance", class_maintenance, 1); | |
985 | ||
986 | add_prefix_cmd ("info", class_maintenance, maintenance_info_command, _("\ | |
987 | Commands for showing internal info about the program being debugged."), | |
988 | &maintenanceinfolist, "maintenance info ", 0, | |
989 | &maintenancelist); | |
990 | add_alias_cmd ("i", "info", class_maintenance, 1, &maintenancelist); | |
991 | ||
992 | add_cmd ("sections", class_maintenance, maintenance_info_sections, _("\ | |
993 | List the BFD sections of the exec and core files. \n\ | |
994 | Arguments may be any combination of:\n\ | |
995 | [one or more section names]\n\ | |
996 | ALLOC LOAD RELOC READONLY CODE DATA ROM CONSTRUCTOR\n\ | |
997 | HAS_CONTENTS NEVER_LOAD COFF_SHARED_LIBRARY IS_COMMON\n\ | |
998 | Sections matching any argument will be listed (no argument\n\ | |
999 | implies all sections). In addition, the special argument\n\ | |
1000 | ALLOBJ\n\ | |
1001 | lists all sections from all object files, including shared libraries."), | |
1002 | &maintenanceinfolist); | |
1003 | ||
1004 | add_prefix_cmd ("print", class_maintenance, maintenance_print_command, | |
1005 | _("Maintenance command for printing GDB internal state."), | |
1006 | &maintenanceprintlist, "maintenance print ", 0, | |
1007 | &maintenancelist); | |
1008 | ||
1009 | add_prefix_cmd ("set", class_maintenance, maintenance_set_cmd, _("\ | |
1010 | Set GDB internal variables used by the GDB maintainer.\n\ | |
1011 | Configure variables internal to GDB that aid in GDB's maintenance"), | |
1012 | &maintenance_set_cmdlist, "maintenance set ", | |
1013 | 0/*allow-unknown*/, | |
1014 | &maintenancelist); | |
1015 | ||
1016 | add_prefix_cmd ("show", class_maintenance, maintenance_show_cmd, _("\ | |
1017 | Show GDB internal variables used by the GDB maintainer.\n\ | |
1018 | Configure variables internal to GDB that aid in GDB's maintenance"), | |
1019 | &maintenance_show_cmdlist, "maintenance show ", | |
1020 | 0/*allow-unknown*/, | |
1021 | &maintenancelist); | |
1022 | ||
1023 | #ifndef _WIN32 | |
1024 | add_cmd ("dump-me", class_maintenance, maintenance_dump_me, _("\ | |
1025 | Get fatal error; make debugger dump its core.\n\ | |
1026 | GDB sets its handling of SIGQUIT back to SIG_DFL and then sends\n\ | |
1027 | itself a SIGQUIT signal."), | |
1028 | &maintenancelist); | |
1029 | #endif | |
1030 | ||
1031 | add_cmd ("internal-error", class_maintenance, | |
1032 | maintenance_internal_error, _("\ | |
1033 | Give GDB an internal error.\n\ | |
1034 | Cause GDB to behave as if an internal error was detected."), | |
1035 | &maintenancelist); | |
1036 | ||
1037 | add_cmd ("internal-warning", class_maintenance, | |
1038 | maintenance_internal_warning, _("\ | |
1039 | Give GDB an internal warning.\n\ | |
1040 | Cause GDB to behave as if an internal warning was reported."), | |
1041 | &maintenancelist); | |
1042 | ||
1043 | add_cmd ("demangle", class_maintenance, maintenance_demangle, _("\ | |
1044 | Demangle a C++/ObjC mangled name.\n\ | |
1045 | Call internal GDB demangler routine to demangle a C++ link name\n\ | |
1046 | and prints the result."), | |
1047 | &maintenancelist); | |
1048 | ||
1049 | add_prefix_cmd ("per-command", class_maintenance, set_per_command_cmd, _("\ | |
1050 | Per-command statistics settings."), | |
1051 | &per_command_setlist, "set per-command ", | |
1052 | 1/*allow-unknown*/, &maintenance_set_cmdlist); | |
1053 | ||
1054 | add_prefix_cmd ("per-command", class_maintenance, show_per_command_cmd, _("\ | |
1055 | Show per-command statistics settings."), | |
1056 | &per_command_showlist, "show per-command ", | |
1057 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
1058 | ||
1059 | add_setshow_boolean_cmd ("time", class_maintenance, | |
1060 | &per_command_time, _("\ | |
1061 | Set whether to display per-command execution time."), _("\ | |
1062 | Show whether to display per-command execution time."), | |
1063 | _("\ | |
1064 | If enabled, the execution time for each command will be\n\ | |
1065 | displayed following the command's output."), | |
1066 | NULL, NULL, | |
1067 | &per_command_setlist, &per_command_showlist); | |
1068 | ||
1069 | add_setshow_boolean_cmd ("space", class_maintenance, | |
1070 | &per_command_space, _("\ | |
1071 | Set whether to display per-command space usage."), _("\ | |
1072 | Show whether to display per-command space usage."), | |
1073 | _("\ | |
1074 | If enabled, the space usage for each command will be\n\ | |
1075 | displayed following the command's output."), | |
1076 | NULL, NULL, | |
1077 | &per_command_setlist, &per_command_showlist); | |
1078 | ||
1079 | add_setshow_boolean_cmd ("symtab", class_maintenance, | |
1080 | &per_command_symtab, _("\ | |
1081 | Set whether to display per-command symtab statistics."), _("\ | |
1082 | Show whether to display per-command symtab statistics."), | |
1083 | _("\ | |
1084 | If enabled, the basic symtab statistics for each command will be\n\ | |
1085 | displayed following the command's output."), | |
1086 | NULL, NULL, | |
1087 | &per_command_setlist, &per_command_showlist); | |
1088 | ||
1089 | /* This is equivalent to "mt set per-command time on". | |
1090 | Kept because some people are used to typing "mt time 1". */ | |
1091 | add_cmd ("time", class_maintenance, maintenance_time_display, _("\ | |
1092 | Set the display of time usage.\n\ | |
1093 | If nonzero, will cause the execution time for each command to be\n\ | |
1094 | displayed, following the command's output."), | |
1095 | &maintenancelist); | |
1096 | ||
1097 | /* This is equivalent to "mt set per-command space on". | |
1098 | Kept because some people are used to typing "mt space 1". */ | |
1099 | add_cmd ("space", class_maintenance, maintenance_space_display, _("\ | |
1100 | Set the display of space usage.\n\ | |
1101 | If nonzero, will cause the execution space for each command to be\n\ | |
1102 | displayed, following the command's output."), | |
1103 | &maintenancelist); | |
1104 | ||
1105 | add_cmd ("type", class_maintenance, maintenance_print_type, _("\ | |
1106 | Print a type chain for a given symbol.\n\ | |
1107 | For each node in a type chain, print the raw data for each member of\n\ | |
1108 | the type structure, and the interpretation of the data."), | |
1109 | &maintenanceprintlist); | |
1110 | ||
1111 | add_cmd ("statistics", class_maintenance, maintenance_print_statistics, | |
1112 | _("Print statistics about internal gdb state."), | |
1113 | &maintenanceprintlist); | |
1114 | ||
1115 | add_cmd ("architecture", class_maintenance, | |
1116 | maintenance_print_architecture, _("\ | |
1117 | Print the internal architecture configuration.\n\ | |
1118 | Takes an optional file parameter."), | |
1119 | &maintenanceprintlist); | |
1120 | ||
1121 | add_cmd ("translate-address", class_maintenance, | |
1122 | maintenance_translate_address, | |
1123 | _("Translate a section name and address to a symbol."), | |
1124 | &maintenancelist); | |
1125 | ||
1126 | add_cmd ("deprecate", class_maintenance, maintenance_deprecate, _("\ | |
1127 | Deprecate a command. Note that this is just in here so the \n\ | |
1128 | testsuite can check the command deprecator. You probably shouldn't use this,\n\ | |
1129 | rather you should use the C function deprecate_cmd(). If you decide you \n\ | |
1130 | want to use it: maintenance deprecate 'commandname' \"replacement\". The \n\ | |
1131 | replacement is optional."), &maintenancelist); | |
1132 | ||
1133 | add_cmd ("undeprecate", class_maintenance, maintenance_undeprecate, _("\ | |
1134 | Undeprecate a command. Note that this is just in here so the \n\ | |
1135 | testsuite can check the command deprecator. You probably shouldn't use this,\n\ | |
1136 | If you decide you want to use it: maintenance undeprecate 'commandname'"), | |
1137 | &maintenancelist); | |
1138 | ||
1139 | add_setshow_zinteger_cmd ("watchdog", class_maintenance, &watchdog, _("\ | |
1140 | Set watchdog timer."), _("\ | |
1141 | Show watchdog timer."), _("\ | |
1142 | When non-zero, this timeout is used instead of waiting forever for a target\n\ | |
1143 | to finish a low-level step or continue operation. If the specified amount\n\ | |
1144 | of time passes without a response from the target, an error occurs."), | |
1145 | NULL, | |
1146 | show_watchdog, | |
1147 | &setlist, &showlist); | |
1148 | ||
1149 | add_setshow_boolean_cmd ("profile", class_maintenance, | |
1150 | &maintenance_profile_p, _("\ | |
1151 | Set internal profiling."), _("\ | |
1152 | Show internal profiling."), _("\ | |
1153 | When enabled GDB is profiled."), | |
1154 | maintenance_set_profile_cmd, | |
1155 | show_maintenance_profile_p, | |
1156 | &maintenance_set_cmdlist, | |
1157 | &maintenance_show_cmdlist); | |
1158 | } |