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1 | /* Support for GDB maintenance commands. | |
2 | ||
3 | Copyright (C) 1992-2019 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 "command.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "symtab.h" | |
30 | #include "block.h" | |
31 | #include "gdbtypes.h" | |
32 | #include "demangle.h" | |
33 | #include "gdbcore.h" | |
34 | #include "expression.h" /* For language.h */ | |
35 | #include "language.h" | |
36 | #include "symfile.h" | |
37 | #include "objfiles.h" | |
38 | #include "value.h" | |
39 | #include "top.h" | |
40 | #include "maint.h" | |
41 | #include "common/selftest.h" | |
42 | ||
43 | #include "cli/cli-decode.h" | |
44 | #include "cli/cli-utils.h" | |
45 | #include "cli/cli-setshow.h" | |
46 | ||
47 | static void maintenance_do_deprecate (const char *, int); | |
48 | ||
49 | /* Access the maintenance subcommands. */ | |
50 | ||
51 | static void | |
52 | maintenance_command (const char *args, int from_tty) | |
53 | { | |
54 | printf_unfiltered (_("\"maintenance\" must be followed by " | |
55 | "the name of a maintenance command.\n")); | |
56 | help_list (maintenancelist, "maintenance ", all_commands, gdb_stdout); | |
57 | } | |
58 | ||
59 | #ifndef _WIN32 | |
60 | static void | |
61 | maintenance_dump_me (const char *args, int from_tty) | |
62 | { | |
63 | if (query (_("Should GDB dump core? "))) | |
64 | { | |
65 | #ifdef __DJGPP__ | |
66 | /* SIGQUIT by default is ignored, so use SIGABRT instead. */ | |
67 | signal (SIGABRT, SIG_DFL); | |
68 | kill (getpid (), SIGABRT); | |
69 | #else | |
70 | signal (SIGQUIT, SIG_DFL); | |
71 | kill (getpid (), SIGQUIT); | |
72 | #endif | |
73 | } | |
74 | } | |
75 | #endif | |
76 | ||
77 | /* Stimulate the internal error mechanism that GDB uses when an | |
78 | internal problem is detected. Allows testing of the mechanism. | |
79 | Also useful when the user wants to drop a core file but not exit | |
80 | GDB. */ | |
81 | ||
82 | static void | |
83 | maintenance_internal_error (const char *args, int from_tty) | |
84 | { | |
85 | internal_error (__FILE__, __LINE__, "%s", (args == NULL ? "" : args)); | |
86 | } | |
87 | ||
88 | /* Stimulate the internal error mechanism that GDB uses when an | |
89 | internal problem is detected. Allows testing of the mechanism. | |
90 | Also useful when the user wants to drop a core file but not exit | |
91 | GDB. */ | |
92 | ||
93 | static void | |
94 | maintenance_internal_warning (const char *args, int from_tty) | |
95 | { | |
96 | internal_warning (__FILE__, __LINE__, "%s", (args == NULL ? "" : args)); | |
97 | } | |
98 | ||
99 | /* Stimulate the internal error mechanism that GDB uses when an | |
100 | demangler problem is detected. Allows testing of the mechanism. */ | |
101 | ||
102 | static void | |
103 | maintenance_demangler_warning (const char *args, int from_tty) | |
104 | { | |
105 | demangler_warning (__FILE__, __LINE__, "%s", (args == NULL ? "" : args)); | |
106 | } | |
107 | ||
108 | /* Old command to demangle a string. The command has been moved to "demangle". | |
109 | It is kept for now because otherwise "mt demangle" gets interpreted as | |
110 | "mt demangler-warning" which artificially creates an internal gdb error. */ | |
111 | ||
112 | static void | |
113 | maintenance_demangle (const char *args, int from_tty) | |
114 | { | |
115 | printf_filtered (_("This command has been moved to \"demangle\".\n")); | |
116 | } | |
117 | ||
118 | static void | |
119 | maintenance_time_display (const char *args, int from_tty) | |
120 | { | |
121 | if (args == NULL || *args == '\0') | |
122 | printf_unfiltered (_("\"maintenance time\" takes a numeric argument.\n")); | |
123 | else | |
124 | set_per_command_time (strtol (args, NULL, 10)); | |
125 | } | |
126 | ||
127 | static void | |
128 | maintenance_space_display (const char *args, int from_tty) | |
129 | { | |
130 | if (args == NULL || *args == '\0') | |
131 | printf_unfiltered ("\"maintenance space\" takes a numeric argument.\n"); | |
132 | else | |
133 | set_per_command_space (strtol (args, NULL, 10)); | |
134 | } | |
135 | ||
136 | /* The "maintenance info" command is defined as a prefix, with | |
137 | allow_unknown 0. Therefore, its own definition is called only for | |
138 | "maintenance info" with no args. */ | |
139 | ||
140 | static void | |
141 | maintenance_info_command (const char *arg, int from_tty) | |
142 | { | |
143 | printf_unfiltered (_("\"maintenance info\" must be followed " | |
144 | "by the name of an info command.\n")); | |
145 | help_list (maintenanceinfolist, "maintenance info ", all_commands, | |
146 | gdb_stdout); | |
147 | } | |
148 | ||
149 | /* The "maintenance check" command is defined as a prefix, with | |
150 | allow_unknown 0. Therefore, its own definition is called only for | |
151 | "maintenance check" with no args. */ | |
152 | ||
153 | static void | |
154 | maintenance_check_command (const char *arg, int from_tty) | |
155 | { | |
156 | printf_unfiltered (_("\"maintenance check\" must be followed " | |
157 | "by the name of a check command.\n")); | |
158 | help_list (maintenancechecklist, "maintenance check ", all_commands, | |
159 | gdb_stdout); | |
160 | } | |
161 | ||
162 | /* Mini tokenizing lexer for 'maint info sections' command. */ | |
163 | ||
164 | static int | |
165 | match_substring (const char *string, const char *substr) | |
166 | { | |
167 | int substr_len = strlen(substr); | |
168 | const char *tok; | |
169 | ||
170 | while ((tok = strstr (string, substr)) != NULL) | |
171 | { | |
172 | /* Got a partial match. Is it a whole word? */ | |
173 | if (tok == string | |
174 | || tok[-1] == ' ' | |
175 | || tok[-1] == '\t') | |
176 | { | |
177 | /* Token is delimited at the front... */ | |
178 | if (tok[substr_len] == ' ' | |
179 | || tok[substr_len] == '\t' | |
180 | || tok[substr_len] == '\0') | |
181 | { | |
182 | /* Token is delimited at the rear. Got a whole-word match. */ | |
183 | return 1; | |
184 | } | |
185 | } | |
186 | /* Token didn't match as a whole word. Advance and try again. */ | |
187 | string = tok + 1; | |
188 | } | |
189 | return 0; | |
190 | } | |
191 | ||
192 | static int | |
193 | match_bfd_flags (const char *string, flagword flags) | |
194 | { | |
195 | if (flags & SEC_ALLOC) | |
196 | if (match_substring (string, "ALLOC")) | |
197 | return 1; | |
198 | if (flags & SEC_LOAD) | |
199 | if (match_substring (string, "LOAD")) | |
200 | return 1; | |
201 | if (flags & SEC_RELOC) | |
202 | if (match_substring (string, "RELOC")) | |
203 | return 1; | |
204 | if (flags & SEC_READONLY) | |
205 | if (match_substring (string, "READONLY")) | |
206 | return 1; | |
207 | if (flags & SEC_CODE) | |
208 | if (match_substring (string, "CODE")) | |
209 | return 1; | |
210 | if (flags & SEC_DATA) | |
211 | if (match_substring (string, "DATA")) | |
212 | return 1; | |
213 | if (flags & SEC_ROM) | |
214 | if (match_substring (string, "ROM")) | |
215 | return 1; | |
216 | if (flags & SEC_CONSTRUCTOR) | |
217 | if (match_substring (string, "CONSTRUCTOR")) | |
218 | return 1; | |
219 | if (flags & SEC_HAS_CONTENTS) | |
220 | if (match_substring (string, "HAS_CONTENTS")) | |
221 | return 1; | |
222 | if (flags & SEC_NEVER_LOAD) | |
223 | if (match_substring (string, "NEVER_LOAD")) | |
224 | return 1; | |
225 | if (flags & SEC_COFF_SHARED_LIBRARY) | |
226 | if (match_substring (string, "COFF_SHARED_LIBRARY")) | |
227 | return 1; | |
228 | if (flags & SEC_IS_COMMON) | |
229 | if (match_substring (string, "IS_COMMON")) | |
230 | return 1; | |
231 | ||
232 | return 0; | |
233 | } | |
234 | ||
235 | static void | |
236 | print_bfd_flags (flagword flags) | |
237 | { | |
238 | if (flags & SEC_ALLOC) | |
239 | printf_filtered (" ALLOC"); | |
240 | if (flags & SEC_LOAD) | |
241 | printf_filtered (" LOAD"); | |
242 | if (flags & SEC_RELOC) | |
243 | printf_filtered (" RELOC"); | |
244 | if (flags & SEC_READONLY) | |
245 | printf_filtered (" READONLY"); | |
246 | if (flags & SEC_CODE) | |
247 | printf_filtered (" CODE"); | |
248 | if (flags & SEC_DATA) | |
249 | printf_filtered (" DATA"); | |
250 | if (flags & SEC_ROM) | |
251 | printf_filtered (" ROM"); | |
252 | if (flags & SEC_CONSTRUCTOR) | |
253 | printf_filtered (" CONSTRUCTOR"); | |
254 | if (flags & SEC_HAS_CONTENTS) | |
255 | printf_filtered (" HAS_CONTENTS"); | |
256 | if (flags & SEC_NEVER_LOAD) | |
257 | printf_filtered (" NEVER_LOAD"); | |
258 | if (flags & SEC_COFF_SHARED_LIBRARY) | |
259 | printf_filtered (" COFF_SHARED_LIBRARY"); | |
260 | if (flags & SEC_IS_COMMON) | |
261 | printf_filtered (" IS_COMMON"); | |
262 | } | |
263 | ||
264 | static void | |
265 | maint_print_section_info (const char *name, flagword flags, | |
266 | CORE_ADDR addr, CORE_ADDR endaddr, | |
267 | unsigned long filepos, int addr_size) | |
268 | { | |
269 | printf_filtered (" %s", hex_string_custom (addr, addr_size)); | |
270 | printf_filtered ("->%s", hex_string_custom (endaddr, addr_size)); | |
271 | printf_filtered (" at %s", | |
272 | hex_string_custom ((unsigned long) filepos, 8)); | |
273 | printf_filtered (": %s", name); | |
274 | print_bfd_flags (flags); | |
275 | printf_filtered ("\n"); | |
276 | } | |
277 | ||
278 | static void | |
279 | print_bfd_section_info (bfd *abfd, | |
280 | asection *asect, | |
281 | void *datum) | |
282 | { | |
283 | flagword flags = bfd_get_section_flags (abfd, asect); | |
284 | const char *name = bfd_section_name (abfd, asect); | |
285 | const char *arg = (const char *) datum; | |
286 | ||
287 | if (arg == NULL || *arg == '\0' | |
288 | || match_substring (arg, name) | |
289 | || match_bfd_flags (arg, flags)) | |
290 | { | |
291 | struct gdbarch *gdbarch = gdbarch_from_bfd (abfd); | |
292 | int addr_size = gdbarch_addr_bit (gdbarch) / 8; | |
293 | CORE_ADDR addr, endaddr; | |
294 | ||
295 | addr = bfd_section_vma (abfd, asect); | |
296 | endaddr = addr + bfd_section_size (abfd, asect); | |
297 | printf_filtered (" [%d] ", gdb_bfd_section_index (abfd, asect)); | |
298 | maint_print_section_info (name, flags, addr, endaddr, | |
299 | asect->filepos, addr_size); | |
300 | } | |
301 | } | |
302 | ||
303 | static void | |
304 | print_objfile_section_info (bfd *abfd, | |
305 | struct obj_section *asect, | |
306 | const char *string) | |
307 | { | |
308 | flagword flags = bfd_get_section_flags (abfd, asect->the_bfd_section); | |
309 | const char *name = bfd_section_name (abfd, asect->the_bfd_section); | |
310 | ||
311 | if (string == NULL || *string == '\0' | |
312 | || match_substring (string, name) | |
313 | || match_bfd_flags (string, flags)) | |
314 | { | |
315 | struct gdbarch *gdbarch = gdbarch_from_bfd (abfd); | |
316 | int addr_size = gdbarch_addr_bit (gdbarch) / 8; | |
317 | ||
318 | maint_print_section_info (name, flags, | |
319 | obj_section_addr (asect), | |
320 | obj_section_endaddr (asect), | |
321 | asect->the_bfd_section->filepos, | |
322 | addr_size); | |
323 | } | |
324 | } | |
325 | ||
326 | static void | |
327 | maintenance_info_sections (const char *arg, int from_tty) | |
328 | { | |
329 | if (exec_bfd) | |
330 | { | |
331 | printf_filtered (_("Exec file:\n")); | |
332 | printf_filtered (" `%s', ", bfd_get_filename (exec_bfd)); | |
333 | wrap_here (" "); | |
334 | printf_filtered (_("file type %s.\n"), bfd_get_target (exec_bfd)); | |
335 | if (arg && *arg && match_substring (arg, "ALLOBJ")) | |
336 | { | |
337 | struct obj_section *osect; | |
338 | ||
339 | /* Only this function cares about the 'ALLOBJ' argument; | |
340 | if 'ALLOBJ' is the only argument, discard it rather than | |
341 | passing it down to print_objfile_section_info (which | |
342 | wouldn't know how to handle it). */ | |
343 | if (strcmp (arg, "ALLOBJ") == 0) | |
344 | arg = NULL; | |
345 | ||
346 | for (objfile *ofile : current_program_space->objfiles ()) | |
347 | { | |
348 | printf_filtered (_(" Object file: %s\n"), | |
349 | bfd_get_filename (ofile->obfd)); | |
350 | ALL_OBJFILE_OSECTIONS (ofile, osect) | |
351 | { | |
352 | print_objfile_section_info (ofile->obfd, osect, arg); | |
353 | } | |
354 | } | |
355 | } | |
356 | else | |
357 | bfd_map_over_sections (exec_bfd, print_bfd_section_info, (void *) arg); | |
358 | } | |
359 | ||
360 | if (core_bfd) | |
361 | { | |
362 | printf_filtered (_("Core file:\n")); | |
363 | printf_filtered (" `%s', ", bfd_get_filename (core_bfd)); | |
364 | wrap_here (" "); | |
365 | printf_filtered (_("file type %s.\n"), bfd_get_target (core_bfd)); | |
366 | bfd_map_over_sections (core_bfd, print_bfd_section_info, (void *) arg); | |
367 | } | |
368 | } | |
369 | ||
370 | static void | |
371 | maintenance_print_statistics (const char *args, int from_tty) | |
372 | { | |
373 | print_objfile_statistics (); | |
374 | print_symbol_bcache_statistics (); | |
375 | } | |
376 | ||
377 | static void | |
378 | maintenance_print_architecture (const char *args, int from_tty) | |
379 | { | |
380 | struct gdbarch *gdbarch = get_current_arch (); | |
381 | ||
382 | if (args == NULL) | |
383 | gdbarch_dump (gdbarch, gdb_stdout); | |
384 | else | |
385 | { | |
386 | stdio_file file; | |
387 | ||
388 | if (!file.open (args, "w")) | |
389 | perror_with_name (_("maintenance print architecture")); | |
390 | gdbarch_dump (gdbarch, &file); | |
391 | } | |
392 | } | |
393 | ||
394 | /* The "maintenance print" command is defined as a prefix, with | |
395 | allow_unknown 0. Therefore, its own definition is called only for | |
396 | "maintenance print" with no args. */ | |
397 | ||
398 | static void | |
399 | maintenance_print_command (const char *arg, int from_tty) | |
400 | { | |
401 | printf_unfiltered (_("\"maintenance print\" must be followed " | |
402 | "by the name of a print command.\n")); | |
403 | help_list (maintenanceprintlist, "maintenance print ", all_commands, | |
404 | gdb_stdout); | |
405 | } | |
406 | ||
407 | /* The "maintenance translate-address" command converts a section and address | |
408 | to a symbol. This can be called in two ways: | |
409 | maintenance translate-address <secname> <addr> | |
410 | or maintenance translate-address <addr>. */ | |
411 | ||
412 | static void | |
413 | maintenance_translate_address (const char *arg, int from_tty) | |
414 | { | |
415 | CORE_ADDR address; | |
416 | struct obj_section *sect; | |
417 | const char *p; | |
418 | struct bound_minimal_symbol sym; | |
419 | ||
420 | if (arg == NULL || *arg == 0) | |
421 | error (_("requires argument (address or section + address)")); | |
422 | ||
423 | sect = NULL; | |
424 | p = arg; | |
425 | ||
426 | if (!isdigit (*p)) | |
427 | { /* See if we have a valid section name. */ | |
428 | while (*p && !isspace (*p)) /* Find end of section name. */ | |
429 | p++; | |
430 | if (*p == '\000') /* End of command? */ | |
431 | error (_("Need to specify section name and address")); | |
432 | ||
433 | int arg_len = p - arg; | |
434 | p = skip_spaces (p + 1); | |
435 | ||
436 | for (objfile *objfile : current_program_space->objfiles ()) | |
437 | ALL_OBJFILE_OSECTIONS (objfile, sect) | |
438 | { | |
439 | if (strncmp (sect->the_bfd_section->name, arg, arg_len) == 0) | |
440 | goto found; | |
441 | } | |
442 | ||
443 | error (_("Unknown section %s."), arg); | |
444 | found: ; | |
445 | } | |
446 | ||
447 | address = parse_and_eval_address (p); | |
448 | ||
449 | if (sect) | |
450 | sym = lookup_minimal_symbol_by_pc_section (address, sect); | |
451 | else | |
452 | sym = lookup_minimal_symbol_by_pc (address); | |
453 | ||
454 | if (sym.minsym) | |
455 | { | |
456 | const char *symbol_name = MSYMBOL_PRINT_NAME (sym.minsym); | |
457 | const char *symbol_offset | |
458 | = pulongest (address - BMSYMBOL_VALUE_ADDRESS (sym)); | |
459 | ||
460 | sect = MSYMBOL_OBJ_SECTION(sym.objfile, sym.minsym); | |
461 | if (sect != NULL) | |
462 | { | |
463 | const char *section_name; | |
464 | const char *obj_name; | |
465 | ||
466 | gdb_assert (sect->the_bfd_section && sect->the_bfd_section->name); | |
467 | section_name = sect->the_bfd_section->name; | |
468 | ||
469 | gdb_assert (sect->objfile && objfile_name (sect->objfile)); | |
470 | obj_name = objfile_name (sect->objfile); | |
471 | ||
472 | if (MULTI_OBJFILE_P ()) | |
473 | printf_filtered (_("%s + %s in section %s of %s\n"), | |
474 | symbol_name, symbol_offset, | |
475 | section_name, obj_name); | |
476 | else | |
477 | printf_filtered (_("%s + %s in section %s\n"), | |
478 | symbol_name, symbol_offset, section_name); | |
479 | } | |
480 | else | |
481 | printf_filtered (_("%s + %s\n"), symbol_name, symbol_offset); | |
482 | } | |
483 | else if (sect) | |
484 | printf_filtered (_("no symbol at %s:%s\n"), | |
485 | sect->the_bfd_section->name, hex_string (address)); | |
486 | else | |
487 | printf_filtered (_("no symbol at %s\n"), hex_string (address)); | |
488 | ||
489 | return; | |
490 | } | |
491 | ||
492 | ||
493 | /* When a command is deprecated the user will be warned the first time | |
494 | the command is used. If possible, a replacement will be | |
495 | offered. */ | |
496 | ||
497 | static void | |
498 | maintenance_deprecate (const char *args, int from_tty) | |
499 | { | |
500 | if (args == NULL || *args == '\0') | |
501 | { | |
502 | printf_unfiltered (_("\"maintenance deprecate\" takes an argument,\n\ | |
503 | the command you want to deprecate, and optionally the replacement command\n\ | |
504 | enclosed in quotes.\n")); | |
505 | } | |
506 | ||
507 | maintenance_do_deprecate (args, 1); | |
508 | } | |
509 | ||
510 | ||
511 | static void | |
512 | maintenance_undeprecate (const char *args, int from_tty) | |
513 | { | |
514 | if (args == NULL || *args == '\0') | |
515 | { | |
516 | printf_unfiltered (_("\"maintenance undeprecate\" takes an argument, \n\ | |
517 | the command you want to undeprecate.\n")); | |
518 | } | |
519 | ||
520 | maintenance_do_deprecate (args, 0); | |
521 | } | |
522 | ||
523 | /* You really shouldn't be using this. It is just for the testsuite. | |
524 | Rather, you should use deprecate_cmd() when the command is created | |
525 | in _initialize_blah(). | |
526 | ||
527 | This function deprecates a command and optionally assigns it a | |
528 | replacement. */ | |
529 | ||
530 | static void | |
531 | maintenance_do_deprecate (const char *text, int deprecate) | |
532 | { | |
533 | struct cmd_list_element *alias = NULL; | |
534 | struct cmd_list_element *prefix_cmd = NULL; | |
535 | struct cmd_list_element *cmd = NULL; | |
536 | ||
537 | const char *start_ptr = NULL; | |
538 | const char *end_ptr = NULL; | |
539 | int len; | |
540 | char *replacement = NULL; | |
541 | ||
542 | if (text == NULL) | |
543 | return; | |
544 | ||
545 | if (!lookup_cmd_composition (text, &alias, &prefix_cmd, &cmd)) | |
546 | { | |
547 | printf_filtered (_("Can't find command '%s' to deprecate.\n"), text); | |
548 | return; | |
549 | } | |
550 | ||
551 | if (deprecate) | |
552 | { | |
553 | /* Look for a replacement command. */ | |
554 | start_ptr = strchr (text, '\"'); | |
555 | if (start_ptr != NULL) | |
556 | { | |
557 | start_ptr++; | |
558 | end_ptr = strrchr (start_ptr, '\"'); | |
559 | if (end_ptr != NULL) | |
560 | { | |
561 | len = end_ptr - start_ptr; | |
562 | replacement = savestring (start_ptr, len); | |
563 | } | |
564 | } | |
565 | } | |
566 | ||
567 | if (!start_ptr || !end_ptr) | |
568 | replacement = NULL; | |
569 | ||
570 | ||
571 | /* If they used an alias, we only want to deprecate the alias. | |
572 | ||
573 | Note the MALLOCED_REPLACEMENT test. If the command's replacement | |
574 | string was allocated at compile time we don't want to free the | |
575 | memory. */ | |
576 | if (alias) | |
577 | { | |
578 | if (alias->malloced_replacement) | |
579 | xfree ((char *) alias->replacement); | |
580 | ||
581 | if (deprecate) | |
582 | { | |
583 | alias->deprecated_warn_user = 1; | |
584 | alias->cmd_deprecated = 1; | |
585 | } | |
586 | else | |
587 | { | |
588 | alias->deprecated_warn_user = 0; | |
589 | alias->cmd_deprecated = 0; | |
590 | } | |
591 | alias->replacement = replacement; | |
592 | alias->malloced_replacement = 1; | |
593 | return; | |
594 | } | |
595 | else if (cmd) | |
596 | { | |
597 | if (cmd->malloced_replacement) | |
598 | xfree ((char *) cmd->replacement); | |
599 | ||
600 | if (deprecate) | |
601 | { | |
602 | cmd->deprecated_warn_user = 1; | |
603 | cmd->cmd_deprecated = 1; | |
604 | } | |
605 | else | |
606 | { | |
607 | cmd->deprecated_warn_user = 0; | |
608 | cmd->cmd_deprecated = 0; | |
609 | } | |
610 | cmd->replacement = replacement; | |
611 | cmd->malloced_replacement = 1; | |
612 | return; | |
613 | } | |
614 | xfree (replacement); | |
615 | } | |
616 | ||
617 | /* Maintenance set/show framework. */ | |
618 | ||
619 | struct cmd_list_element *maintenance_set_cmdlist; | |
620 | struct cmd_list_element *maintenance_show_cmdlist; | |
621 | ||
622 | static void | |
623 | maintenance_set_cmd (const char *args, int from_tty) | |
624 | { | |
625 | printf_unfiltered (_("\"maintenance set\" must be followed " | |
626 | "by the name of a set command.\n")); | |
627 | help_list (maintenance_set_cmdlist, "maintenance set ", all_commands, | |
628 | gdb_stdout); | |
629 | } | |
630 | ||
631 | static void | |
632 | maintenance_show_cmd (const char *args, int from_tty) | |
633 | { | |
634 | cmd_show_list (maintenance_show_cmdlist, from_tty, ""); | |
635 | } | |
636 | ||
637 | /* Profiling support. */ | |
638 | ||
639 | static int maintenance_profile_p; | |
640 | static void | |
641 | show_maintenance_profile_p (struct ui_file *file, int from_tty, | |
642 | struct cmd_list_element *c, const char *value) | |
643 | { | |
644 | fprintf_filtered (file, _("Internal profiling is %s.\n"), value); | |
645 | } | |
646 | ||
647 | #ifdef HAVE__ETEXT | |
648 | extern char _etext; | |
649 | #define TEXTEND &_etext | |
650 | #elif defined (HAVE_ETEXT) | |
651 | extern char etext; | |
652 | #define TEXTEND &etext | |
653 | #endif | |
654 | ||
655 | #if defined (HAVE_MONSTARTUP) && defined (HAVE__MCLEANUP) && defined (TEXTEND) | |
656 | ||
657 | static int profiling_state; | |
658 | ||
659 | EXTERN_C void _mcleanup (void); | |
660 | ||
661 | static void | |
662 | mcleanup_wrapper (void) | |
663 | { | |
664 | if (profiling_state) | |
665 | _mcleanup (); | |
666 | } | |
667 | ||
668 | EXTERN_C void monstartup (unsigned long, unsigned long); | |
669 | extern int main (); | |
670 | ||
671 | static void | |
672 | maintenance_set_profile_cmd (const char *args, int from_tty, | |
673 | struct cmd_list_element *c) | |
674 | { | |
675 | if (maintenance_profile_p == profiling_state) | |
676 | return; | |
677 | ||
678 | profiling_state = maintenance_profile_p; | |
679 | ||
680 | if (maintenance_profile_p) | |
681 | { | |
682 | static int profiling_initialized; | |
683 | ||
684 | if (!profiling_initialized) | |
685 | { | |
686 | atexit (mcleanup_wrapper); | |
687 | profiling_initialized = 1; | |
688 | } | |
689 | ||
690 | /* "main" is now always the first function in the text segment, so use | |
691 | its address for monstartup. */ | |
692 | monstartup ((unsigned long) &main, (unsigned long) TEXTEND); | |
693 | } | |
694 | else | |
695 | { | |
696 | extern void _mcleanup (void); | |
697 | ||
698 | _mcleanup (); | |
699 | } | |
700 | } | |
701 | #else | |
702 | static void | |
703 | maintenance_set_profile_cmd (const char *args, int from_tty, | |
704 | struct cmd_list_element *c) | |
705 | { | |
706 | error (_("Profiling support is not available on this system.")); | |
707 | } | |
708 | #endif | |
709 | \f | |
710 | /* If nonzero, display time usage both at startup and for each command. */ | |
711 | ||
712 | static int per_command_time; | |
713 | ||
714 | /* If nonzero, display space usage both at startup and for each command. */ | |
715 | ||
716 | static int per_command_space; | |
717 | ||
718 | /* If nonzero, display basic symtab stats for each command. */ | |
719 | ||
720 | static int per_command_symtab; | |
721 | ||
722 | /* mt per-command commands. */ | |
723 | ||
724 | static struct cmd_list_element *per_command_setlist; | |
725 | static struct cmd_list_element *per_command_showlist; | |
726 | ||
727 | /* Set whether to display time statistics to NEW_VALUE | |
728 | (non-zero means true). */ | |
729 | ||
730 | void | |
731 | set_per_command_time (int new_value) | |
732 | { | |
733 | per_command_time = new_value; | |
734 | } | |
735 | ||
736 | /* Set whether to display space statistics to NEW_VALUE | |
737 | (non-zero means true). */ | |
738 | ||
739 | void | |
740 | set_per_command_space (int new_value) | |
741 | { | |
742 | per_command_space = new_value; | |
743 | } | |
744 | ||
745 | /* Count the number of symtabs and blocks. */ | |
746 | ||
747 | static void | |
748 | count_symtabs_and_blocks (int *nr_symtabs_ptr, int *nr_compunit_symtabs_ptr, | |
749 | int *nr_blocks_ptr) | |
750 | { | |
751 | int nr_symtabs = 0; | |
752 | int nr_compunit_symtabs = 0; | |
753 | int nr_blocks = 0; | |
754 | ||
755 | /* When collecting statistics during startup, this is called before | |
756 | pretty much anything in gdb has been initialized, and thus | |
757 | current_program_space may be NULL. */ | |
758 | if (current_program_space != NULL) | |
759 | { | |
760 | for (objfile *o : current_program_space->objfiles ()) | |
761 | { | |
762 | for (compunit_symtab *cu : o->compunits ()) | |
763 | { | |
764 | ++nr_compunit_symtabs; | |
765 | nr_blocks += BLOCKVECTOR_NBLOCKS (COMPUNIT_BLOCKVECTOR (cu)); | |
766 | nr_symtabs += std::distance (compunit_filetabs (cu).begin (), | |
767 | compunit_filetabs (cu).end ()); | |
768 | } | |
769 | } | |
770 | } | |
771 | ||
772 | *nr_symtabs_ptr = nr_symtabs; | |
773 | *nr_compunit_symtabs_ptr = nr_compunit_symtabs; | |
774 | *nr_blocks_ptr = nr_blocks; | |
775 | } | |
776 | ||
777 | /* As indicated by display_time and display_space, report GDB's | |
778 | elapsed time and space usage from the base time and space recorded | |
779 | in this object. */ | |
780 | ||
781 | scoped_command_stats::~scoped_command_stats () | |
782 | { | |
783 | /* Early exit if we're not reporting any stats. It can be expensive to | |
784 | compute the pre-command values so don't collect them at all if we're | |
785 | not reporting stats. Alas this doesn't work in the startup case because | |
786 | we don't know yet whether we will be reporting the stats. For the | |
787 | startup case collect the data anyway (it should be cheap at this point), | |
788 | and leave it to the reporter to decide whether to print them. */ | |
789 | if (m_msg_type | |
790 | && !per_command_time | |
791 | && !per_command_space | |
792 | && !per_command_symtab) | |
793 | return; | |
794 | ||
795 | if (m_time_enabled && per_command_time) | |
796 | { | |
797 | print_time (_("command finished")); | |
798 | ||
799 | using namespace std::chrono; | |
800 | ||
801 | run_time_clock::duration cmd_time | |
802 | = run_time_clock::now () - m_start_cpu_time; | |
803 | ||
804 | steady_clock::duration wall_time | |
805 | = steady_clock::now () - m_start_wall_time; | |
806 | /* Subtract time spend in prompt_for_continue from walltime. */ | |
807 | wall_time -= get_prompt_for_continue_wait_time (); | |
808 | ||
809 | printf_unfiltered (!m_msg_type | |
810 | ? _("Startup time: %.6f (cpu), %.6f (wall)\n") | |
811 | : _("Command execution time: %.6f (cpu), %.6f (wall)\n"), | |
812 | duration<double> (cmd_time).count (), | |
813 | duration<double> (wall_time).count ()); | |
814 | } | |
815 | ||
816 | if (m_space_enabled && per_command_space) | |
817 | { | |
818 | #ifdef HAVE_USEFUL_SBRK | |
819 | char *lim = (char *) sbrk (0); | |
820 | ||
821 | long space_now = lim - lim_at_start; | |
822 | long space_diff = space_now - m_start_space; | |
823 | ||
824 | printf_unfiltered (!m_msg_type | |
825 | ? _("Space used: %ld (%s%ld during startup)\n") | |
826 | : _("Space used: %ld (%s%ld for this command)\n"), | |
827 | space_now, | |
828 | (space_diff >= 0 ? "+" : ""), | |
829 | space_diff); | |
830 | #endif | |
831 | } | |
832 | ||
833 | if (m_symtab_enabled && per_command_symtab) | |
834 | { | |
835 | int nr_symtabs, nr_compunit_symtabs, nr_blocks; | |
836 | ||
837 | count_symtabs_and_blocks (&nr_symtabs, &nr_compunit_symtabs, &nr_blocks); | |
838 | printf_unfiltered (_("#symtabs: %d (+%d)," | |
839 | " #compunits: %d (+%d)," | |
840 | " #blocks: %d (+%d)\n"), | |
841 | nr_symtabs, | |
842 | nr_symtabs - m_start_nr_symtabs, | |
843 | nr_compunit_symtabs, | |
844 | (nr_compunit_symtabs | |
845 | - m_start_nr_compunit_symtabs), | |
846 | nr_blocks, | |
847 | nr_blocks - m_start_nr_blocks); | |
848 | } | |
849 | } | |
850 | ||
851 | scoped_command_stats::scoped_command_stats (bool msg_type) | |
852 | : m_msg_type (msg_type) | |
853 | { | |
854 | if (!m_msg_type || per_command_space) | |
855 | { | |
856 | #ifdef HAVE_USEFUL_SBRK | |
857 | char *lim = (char *) sbrk (0); | |
858 | m_start_space = lim - lim_at_start; | |
859 | m_space_enabled = 1; | |
860 | #endif | |
861 | } | |
862 | else | |
863 | m_space_enabled = 0; | |
864 | ||
865 | if (msg_type == 0 || per_command_time) | |
866 | { | |
867 | using namespace std::chrono; | |
868 | ||
869 | m_start_cpu_time = run_time_clock::now (); | |
870 | m_start_wall_time = steady_clock::now (); | |
871 | m_time_enabled = 1; | |
872 | ||
873 | if (per_command_time) | |
874 | print_time (_("command started")); | |
875 | } | |
876 | else | |
877 | m_time_enabled = 0; | |
878 | ||
879 | if (msg_type == 0 || per_command_symtab) | |
880 | { | |
881 | int nr_symtabs, nr_compunit_symtabs, nr_blocks; | |
882 | ||
883 | count_symtabs_and_blocks (&nr_symtabs, &nr_compunit_symtabs, &nr_blocks); | |
884 | m_start_nr_symtabs = nr_symtabs; | |
885 | m_start_nr_compunit_symtabs = nr_compunit_symtabs; | |
886 | m_start_nr_blocks = nr_blocks; | |
887 | m_symtab_enabled = 1; | |
888 | } | |
889 | else | |
890 | m_symtab_enabled = 0; | |
891 | ||
892 | /* Initialize timer to keep track of how long we waited for the user. */ | |
893 | reset_prompt_for_continue_wait_time (); | |
894 | } | |
895 | ||
896 | /* See maint.h. */ | |
897 | ||
898 | void | |
899 | scoped_command_stats::print_time (const char *msg) | |
900 | { | |
901 | using namespace std::chrono; | |
902 | ||
903 | auto now = system_clock::now (); | |
904 | auto ticks = now.time_since_epoch ().count () / (1000 * 1000); | |
905 | auto millis = ticks % 1000; | |
906 | ||
907 | std::time_t as_time = system_clock::to_time_t (now); | |
908 | struct tm *tm = localtime (&as_time); | |
909 | ||
910 | char out[100]; | |
911 | strftime (out, sizeof (out), "%F %H:%M:%S", tm); | |
912 | ||
913 | printf_unfiltered ("%s.%03d - %s\n", out, (int) millis, msg); | |
914 | } | |
915 | ||
916 | /* Handle unknown "mt set per-command" arguments. | |
917 | In this case have "mt set per-command on|off" affect every setting. */ | |
918 | ||
919 | static void | |
920 | set_per_command_cmd (const char *args, int from_tty) | |
921 | { | |
922 | struct cmd_list_element *list; | |
923 | int val; | |
924 | ||
925 | val = parse_cli_boolean_value (args); | |
926 | if (val < 0) | |
927 | error (_("Bad value for 'mt set per-command no'.")); | |
928 | ||
929 | for (list = per_command_setlist; list != NULL; list = list->next) | |
930 | if (list->var_type == var_boolean) | |
931 | { | |
932 | gdb_assert (list->type == set_cmd); | |
933 | do_set_command (args, from_tty, list); | |
934 | } | |
935 | } | |
936 | ||
937 | /* Command "show per-command" displays summary of all the current | |
938 | "show per-command " settings. */ | |
939 | ||
940 | static void | |
941 | show_per_command_cmd (const char *args, int from_tty) | |
942 | { | |
943 | cmd_show_list (per_command_showlist, from_tty, ""); | |
944 | } | |
945 | \f | |
946 | ||
947 | /* The "maintenance selftest" command. */ | |
948 | ||
949 | static void | |
950 | maintenance_selftest (const char *args, int from_tty) | |
951 | { | |
952 | #if GDB_SELF_TEST | |
953 | selftests::run_tests (args); | |
954 | #else | |
955 | printf_filtered (_("\ | |
956 | Selftests have been disabled for this build.\n")); | |
957 | #endif | |
958 | } | |
959 | ||
960 | static void | |
961 | maintenance_info_selftests (const char *arg, int from_tty) | |
962 | { | |
963 | #if GDB_SELF_TEST | |
964 | printf_filtered ("Registered selftests:\n"); | |
965 | selftests::for_each_selftest ([] (const std::string &name) { | |
966 | printf_filtered (" - %s\n", name.c_str ()); | |
967 | }); | |
968 | #else | |
969 | printf_filtered (_("\ | |
970 | Selftests have been disabled for this build.\n")); | |
971 | #endif | |
972 | } | |
973 | ||
974 | \f | |
975 | void | |
976 | _initialize_maint_cmds (void) | |
977 | { | |
978 | struct cmd_list_element *cmd; | |
979 | ||
980 | add_prefix_cmd ("maintenance", class_maintenance, maintenance_command, _("\ | |
981 | Commands for use by GDB maintainers.\n\ | |
982 | Includes commands to dump specific internal GDB structures in\n\ | |
983 | a human readable form, to cause GDB to deliberately dump core, etc."), | |
984 | &maintenancelist, "maintenance ", 0, | |
985 | &cmdlist); | |
986 | ||
987 | add_com_alias ("mt", "maintenance", class_maintenance, 1); | |
988 | ||
989 | add_prefix_cmd ("info", class_maintenance, maintenance_info_command, _("\ | |
990 | Commands for showing internal info about the program being debugged."), | |
991 | &maintenanceinfolist, "maintenance info ", 0, | |
992 | &maintenancelist); | |
993 | add_alias_cmd ("i", "info", class_maintenance, 1, &maintenancelist); | |
994 | ||
995 | add_cmd ("sections", class_maintenance, maintenance_info_sections, _("\ | |
996 | List the BFD sections of the exec and core files. \n\ | |
997 | Arguments may be any combination of:\n\ | |
998 | [one or more section names]\n\ | |
999 | ALLOC LOAD RELOC READONLY CODE DATA ROM CONSTRUCTOR\n\ | |
1000 | HAS_CONTENTS NEVER_LOAD COFF_SHARED_LIBRARY IS_COMMON\n\ | |
1001 | Sections matching any argument will be listed (no argument\n\ | |
1002 | implies all sections). In addition, the special argument\n\ | |
1003 | ALLOBJ\n\ | |
1004 | lists all sections from all object files, including shared libraries."), | |
1005 | &maintenanceinfolist); | |
1006 | ||
1007 | add_prefix_cmd ("print", class_maintenance, maintenance_print_command, | |
1008 | _("Maintenance command for printing GDB internal state."), | |
1009 | &maintenanceprintlist, "maintenance print ", 0, | |
1010 | &maintenancelist); | |
1011 | ||
1012 | add_prefix_cmd ("set", class_maintenance, maintenance_set_cmd, _("\ | |
1013 | Set GDB internal variables used by the GDB maintainer.\n\ | |
1014 | Configure variables internal to GDB that aid in GDB's maintenance"), | |
1015 | &maintenance_set_cmdlist, "maintenance set ", | |
1016 | 0/*allow-unknown*/, | |
1017 | &maintenancelist); | |
1018 | ||
1019 | add_prefix_cmd ("show", class_maintenance, maintenance_show_cmd, _("\ | |
1020 | Show GDB internal variables used by the GDB maintainer.\n\ | |
1021 | Configure variables internal to GDB that aid in GDB's maintenance"), | |
1022 | &maintenance_show_cmdlist, "maintenance show ", | |
1023 | 0/*allow-unknown*/, | |
1024 | &maintenancelist); | |
1025 | ||
1026 | #ifndef _WIN32 | |
1027 | add_cmd ("dump-me", class_maintenance, maintenance_dump_me, _("\ | |
1028 | Get fatal error; make debugger dump its core.\n\ | |
1029 | GDB sets its handling of SIGQUIT back to SIG_DFL and then sends\n\ | |
1030 | itself a SIGQUIT signal."), | |
1031 | &maintenancelist); | |
1032 | #endif | |
1033 | ||
1034 | add_cmd ("internal-error", class_maintenance, | |
1035 | maintenance_internal_error, _("\ | |
1036 | Give GDB an internal error.\n\ | |
1037 | Cause GDB to behave as if an internal error was detected."), | |
1038 | &maintenancelist); | |
1039 | ||
1040 | add_cmd ("internal-warning", class_maintenance, | |
1041 | maintenance_internal_warning, _("\ | |
1042 | Give GDB an internal warning.\n\ | |
1043 | Cause GDB to behave as if an internal warning was reported."), | |
1044 | &maintenancelist); | |
1045 | ||
1046 | add_cmd ("demangler-warning", class_maintenance, | |
1047 | maintenance_demangler_warning, _("\ | |
1048 | Give GDB a demangler warning.\n\ | |
1049 | Cause GDB to behave as if a demangler warning was reported."), | |
1050 | &maintenancelist); | |
1051 | ||
1052 | cmd = add_cmd ("demangle", class_maintenance, maintenance_demangle, _("\ | |
1053 | This command has been moved to \"demangle\"."), | |
1054 | &maintenancelist); | |
1055 | deprecate_cmd (cmd, "demangle"); | |
1056 | ||
1057 | add_prefix_cmd ("per-command", class_maintenance, set_per_command_cmd, _("\ | |
1058 | Per-command statistics settings."), | |
1059 | &per_command_setlist, "maintenance set per-command ", | |
1060 | 1/*allow-unknown*/, &maintenance_set_cmdlist); | |
1061 | ||
1062 | add_prefix_cmd ("per-command", class_maintenance, show_per_command_cmd, _("\ | |
1063 | Show per-command statistics settings."), | |
1064 | &per_command_showlist, "maintenance show per-command ", | |
1065 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
1066 | ||
1067 | add_setshow_boolean_cmd ("time", class_maintenance, | |
1068 | &per_command_time, _("\ | |
1069 | Set whether to display per-command execution time."), _("\ | |
1070 | Show whether to display per-command execution time."), | |
1071 | _("\ | |
1072 | If enabled, the execution time for each command will be\n\ | |
1073 | displayed following the command's output."), | |
1074 | NULL, NULL, | |
1075 | &per_command_setlist, &per_command_showlist); | |
1076 | ||
1077 | add_setshow_boolean_cmd ("space", class_maintenance, | |
1078 | &per_command_space, _("\ | |
1079 | Set whether to display per-command space usage."), _("\ | |
1080 | Show whether to display per-command space usage."), | |
1081 | _("\ | |
1082 | If enabled, the space usage for each command will be\n\ | |
1083 | displayed following the command's output."), | |
1084 | NULL, NULL, | |
1085 | &per_command_setlist, &per_command_showlist); | |
1086 | ||
1087 | add_setshow_boolean_cmd ("symtab", class_maintenance, | |
1088 | &per_command_symtab, _("\ | |
1089 | Set whether to display per-command symtab statistics."), _("\ | |
1090 | Show whether to display per-command symtab statistics."), | |
1091 | _("\ | |
1092 | If enabled, the basic symtab statistics for each command will be\n\ | |
1093 | displayed following the command's output."), | |
1094 | NULL, NULL, | |
1095 | &per_command_setlist, &per_command_showlist); | |
1096 | ||
1097 | /* This is equivalent to "mt set per-command time on". | |
1098 | Kept because some people are used to typing "mt time 1". */ | |
1099 | add_cmd ("time", class_maintenance, maintenance_time_display, _("\ | |
1100 | Set the display of time usage.\n\ | |
1101 | If nonzero, will cause the execution time for each command to be\n\ | |
1102 | displayed, following the command's output."), | |
1103 | &maintenancelist); | |
1104 | ||
1105 | /* This is equivalent to "mt set per-command space on". | |
1106 | Kept because some people are used to typing "mt space 1". */ | |
1107 | add_cmd ("space", class_maintenance, maintenance_space_display, _("\ | |
1108 | Set the display of space usage.\n\ | |
1109 | If nonzero, will cause the execution space for each command to be\n\ | |
1110 | displayed, following the command's output."), | |
1111 | &maintenancelist); | |
1112 | ||
1113 | add_cmd ("type", class_maintenance, maintenance_print_type, _("\ | |
1114 | Print a type chain for a given symbol.\n\ | |
1115 | For each node in a type chain, print the raw data for each member of\n\ | |
1116 | the type structure, and the interpretation of the data."), | |
1117 | &maintenanceprintlist); | |
1118 | ||
1119 | add_cmd ("statistics", class_maintenance, maintenance_print_statistics, | |
1120 | _("Print statistics about internal gdb state."), | |
1121 | &maintenanceprintlist); | |
1122 | ||
1123 | add_cmd ("architecture", class_maintenance, | |
1124 | maintenance_print_architecture, _("\ | |
1125 | Print the internal architecture configuration.\n\ | |
1126 | Takes an optional file parameter."), | |
1127 | &maintenanceprintlist); | |
1128 | ||
1129 | add_prefix_cmd ("check", class_maintenance, maintenance_check_command, _("\ | |
1130 | Commands for checking internal gdb state."), | |
1131 | &maintenancechecklist, "maintenance check ", 0, | |
1132 | &maintenancelist); | |
1133 | ||
1134 | add_cmd ("translate-address", class_maintenance, | |
1135 | maintenance_translate_address, | |
1136 | _("Translate a section name and address to a symbol."), | |
1137 | &maintenancelist); | |
1138 | ||
1139 | add_cmd ("deprecate", class_maintenance, maintenance_deprecate, _("\ | |
1140 | Deprecate a command. Note that this is just in here so the \n\ | |
1141 | testsuite can check the command deprecator. You probably shouldn't use this,\n\ | |
1142 | rather you should use the C function deprecate_cmd(). If you decide you \n\ | |
1143 | want to use it: maintenance deprecate 'commandname' \"replacement\". The \n\ | |
1144 | replacement is optional."), &maintenancelist); | |
1145 | ||
1146 | add_cmd ("undeprecate", class_maintenance, maintenance_undeprecate, _("\ | |
1147 | Undeprecate a command. Note that this is just in here so the \n\ | |
1148 | testsuite can check the command deprecator. You probably shouldn't use this,\n\ | |
1149 | If you decide you want to use it: maintenance undeprecate 'commandname'"), | |
1150 | &maintenancelist); | |
1151 | ||
1152 | add_cmd ("selftest", class_maintenance, maintenance_selftest, _("\ | |
1153 | Run gdb's unit tests.\n\ | |
1154 | Usage: maintenance selftest [filter]\n\ | |
1155 | This will run any unit tests that were built in to gdb.\n\ | |
1156 | If a filter is given, only the tests with that value in their name will ran."), | |
1157 | &maintenancelist); | |
1158 | ||
1159 | add_cmd ("selftests", class_maintenance, maintenance_info_selftests, | |
1160 | _("List the registered selftests."), &maintenanceinfolist); | |
1161 | ||
1162 | add_setshow_boolean_cmd ("profile", class_maintenance, | |
1163 | &maintenance_profile_p, _("\ | |
1164 | Set internal profiling."), _("\ | |
1165 | Show internal profiling."), _("\ | |
1166 | When enabled GDB is profiled."), | |
1167 | maintenance_set_profile_cmd, | |
1168 | show_maintenance_profile_p, | |
1169 | &maintenance_set_cmdlist, | |
1170 | &maintenance_show_cmdlist); | |
1171 | } |