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1 | /* Print values for GDB, the GNU debugger. | |
2 | ||
3 | Copyright (C) 1986-2025 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "event-top.h" | |
21 | #include "extract-store-integer.h" | |
22 | #include "symtab.h" | |
23 | #include "gdbtypes.h" | |
24 | #include "value.h" | |
25 | #include "gdbcore.h" | |
26 | #include "cli/cli-cmds.h" | |
27 | #include "target.h" | |
28 | #include "language.h" | |
29 | #include "annotate.h" | |
30 | #include "valprint.h" | |
31 | #include "target-float.h" | |
32 | #include "extension.h" | |
33 | #include "ada-lang.h" | |
34 | #include "gdbsupport/gdb_obstack.h" | |
35 | #include "charset.h" | |
36 | #include "typeprint.h" | |
37 | #include <ctype.h> | |
38 | #include <algorithm> | |
39 | #include "gdbsupport/byte-vector.h" | |
40 | #include "cli/cli-option.h" | |
41 | #include "gdbarch.h" | |
42 | #include "cli/cli-style.h" | |
43 | #include "count-one-bits.h" | |
44 | #include "c-lang.h" | |
45 | #include "cp-abi.h" | |
46 | #include "inferior.h" | |
47 | #include "gdbsupport/selftest.h" | |
48 | #include "selftest-arch.h" | |
49 | ||
50 | /* Maximum number of wchars returned from wchar_iterate. */ | |
51 | #define MAX_WCHARS 4 | |
52 | ||
53 | /* A convenience macro to compute the size of a wchar_t buffer containing X | |
54 | characters. */ | |
55 | #define WCHAR_BUFLEN(X) ((X) * sizeof (gdb_wchar_t)) | |
56 | ||
57 | /* Character buffer size saved while iterating over wchars. */ | |
58 | #define WCHAR_BUFLEN_MAX WCHAR_BUFLEN (MAX_WCHARS) | |
59 | ||
60 | /* A structure to encapsulate state information from iterated | |
61 | character conversions. */ | |
62 | struct converted_character | |
63 | { | |
64 | /* The number of characters converted. */ | |
65 | int num_chars; | |
66 | ||
67 | /* The result of the conversion. See charset.h for more. */ | |
68 | enum wchar_iterate_result result; | |
69 | ||
70 | /* The (saved) converted character(s). */ | |
71 | gdb_wchar_t chars[WCHAR_BUFLEN_MAX]; | |
72 | ||
73 | /* The first converted target byte. */ | |
74 | const gdb_byte *buf; | |
75 | ||
76 | /* The number of bytes converted. */ | |
77 | size_t buflen; | |
78 | ||
79 | /* How many times this character(s) is repeated. */ | |
80 | int repeat_count; | |
81 | }; | |
82 | ||
83 | /* Command lists for set/show print raw. */ | |
84 | struct cmd_list_element *setprintrawlist; | |
85 | struct cmd_list_element *showprintrawlist; | |
86 | ||
87 | /* Prototypes for local functions */ | |
88 | ||
89 | static void set_input_radix_1 (int, unsigned); | |
90 | ||
91 | static void set_output_radix_1 (int, unsigned); | |
92 | ||
93 | static void val_print_type_code_flags (struct type *type, | |
94 | struct value *original_value, | |
95 | int embedded_offset, | |
96 | struct ui_file *stream); | |
97 | ||
98 | /* Start print_max at this value. */ | |
99 | #define PRINT_MAX_DEFAULT 200 | |
100 | ||
101 | /* Start print_max_chars at this value (meaning follow print_max). */ | |
102 | #define PRINT_MAX_CHARS_DEFAULT PRINT_MAX_CHARS_ELEMENTS | |
103 | ||
104 | /* Start print_max_depth at this value. */ | |
105 | #define PRINT_MAX_DEPTH_DEFAULT 20 | |
106 | ||
107 | struct value_print_options user_print_options = | |
108 | { | |
109 | Val_prettyformat_default, /* prettyformat */ | |
110 | false, /* prettyformat_arrays */ | |
111 | false, /* prettyformat_structs */ | |
112 | false, /* vtblprint */ | |
113 | true, /* unionprint */ | |
114 | true, /* addressprint */ | |
115 | false, /* nibblesprint */ | |
116 | false, /* objectprint */ | |
117 | PRINT_MAX_DEFAULT, /* print_max */ | |
118 | PRINT_MAX_CHARS_DEFAULT, /* print_max_chars */ | |
119 | 10, /* repeat_count_threshold */ | |
120 | 0, /* output_format */ | |
121 | 0, /* format */ | |
122 | true, /* memory_tag_violations */ | |
123 | false, /* stop_print_at_null */ | |
124 | false, /* print_array_indexes */ | |
125 | false, /* deref_ref */ | |
126 | true, /* static_field_print */ | |
127 | true, /* pascal_static_field_print */ | |
128 | false, /* raw */ | |
129 | false, /* summary */ | |
130 | true, /* symbol_print */ | |
131 | PRINT_MAX_DEPTH_DEFAULT, /* max_depth */ | |
132 | }; | |
133 | ||
134 | /* Initialize *OPTS to be a copy of the user print options. */ | |
135 | void | |
136 | get_user_print_options (struct value_print_options *opts) | |
137 | { | |
138 | *opts = user_print_options; | |
139 | } | |
140 | ||
141 | /* Initialize *OPTS to be a copy of the user print options, but with | |
142 | pretty-formatting disabled. */ | |
143 | void | |
144 | get_no_prettyformat_print_options (struct value_print_options *opts) | |
145 | { | |
146 | *opts = user_print_options; | |
147 | opts->prettyformat = Val_no_prettyformat; | |
148 | } | |
149 | ||
150 | /* Initialize *OPTS to be a copy of the user print options, but using | |
151 | FORMAT as the formatting option. */ | |
152 | void | |
153 | get_formatted_print_options (struct value_print_options *opts, | |
154 | char format) | |
155 | { | |
156 | *opts = user_print_options; | |
157 | opts->format = format; | |
158 | } | |
159 | ||
160 | /* Implement 'show print elements'. */ | |
161 | ||
162 | static void | |
163 | show_print_max (struct ui_file *file, int from_tty, | |
164 | struct cmd_list_element *c, const char *value) | |
165 | { | |
166 | gdb_printf | |
167 | (file, | |
168 | (user_print_options.print_max_chars != PRINT_MAX_CHARS_ELEMENTS | |
169 | ? _("Limit on array elements to print is %s.\n") | |
170 | : _("Limit on string chars or array elements to print is %s.\n")), | |
171 | value); | |
172 | } | |
173 | ||
174 | /* Implement 'show print characters'. */ | |
175 | ||
176 | static void | |
177 | show_print_max_chars (struct ui_file *file, int from_tty, | |
178 | struct cmd_list_element *c, const char *value) | |
179 | { | |
180 | gdb_printf (file, | |
181 | _("Limit on string characters to print is %s.\n"), | |
182 | value); | |
183 | } | |
184 | ||
185 | /* Default input and output radixes, and output format letter. */ | |
186 | ||
187 | unsigned input_radix = 10; | |
188 | static void | |
189 | show_input_radix (struct ui_file *file, int from_tty, | |
190 | struct cmd_list_element *c, const char *value) | |
191 | { | |
192 | gdb_printf (file, | |
193 | _("Default input radix for entering numbers is %s.\n"), | |
194 | value); | |
195 | } | |
196 | ||
197 | unsigned output_radix = 10; | |
198 | static void | |
199 | show_output_radix (struct ui_file *file, int from_tty, | |
200 | struct cmd_list_element *c, const char *value) | |
201 | { | |
202 | gdb_printf (file, | |
203 | _("Default output radix for printing of values is %s.\n"), | |
204 | value); | |
205 | } | |
206 | ||
207 | /* By default we print arrays without printing the index of each element in | |
208 | the array. This behavior can be changed by setting PRINT_ARRAY_INDEXES. */ | |
209 | ||
210 | static void | |
211 | show_print_array_indexes (struct ui_file *file, int from_tty, | |
212 | struct cmd_list_element *c, const char *value) | |
213 | { | |
214 | gdb_printf (file, _("Printing of array indexes is %s.\n"), value); | |
215 | } | |
216 | ||
217 | /* Print repeat counts if there are more than this many repetitions of an | |
218 | element in an array. Referenced by the low level language dependent | |
219 | print routines. */ | |
220 | ||
221 | static void | |
222 | show_repeat_count_threshold (struct ui_file *file, int from_tty, | |
223 | struct cmd_list_element *c, const char *value) | |
224 | { | |
225 | gdb_printf (file, _("Threshold for repeated print elements is %s.\n"), | |
226 | value); | |
227 | } | |
228 | ||
229 | /* If nonzero, prints memory tag violations for pointers. */ | |
230 | ||
231 | static void | |
232 | show_memory_tag_violations (struct ui_file *file, int from_tty, | |
233 | struct cmd_list_element *c, const char *value) | |
234 | { | |
235 | gdb_printf (file, | |
236 | _("Printing of memory tag violations is %s.\n"), | |
237 | value); | |
238 | } | |
239 | ||
240 | /* If nonzero, stops printing of char arrays at first null. */ | |
241 | ||
242 | static void | |
243 | show_stop_print_at_null (struct ui_file *file, int from_tty, | |
244 | struct cmd_list_element *c, const char *value) | |
245 | { | |
246 | gdb_printf (file, | |
247 | _("Printing of char arrays to stop " | |
248 | "at first null char is %s.\n"), | |
249 | value); | |
250 | } | |
251 | ||
252 | /* Controls pretty printing of structures. */ | |
253 | ||
254 | static void | |
255 | show_prettyformat_structs (struct ui_file *file, int from_tty, | |
256 | struct cmd_list_element *c, const char *value) | |
257 | { | |
258 | gdb_printf (file, _("Pretty formatting of structures is %s.\n"), value); | |
259 | } | |
260 | ||
261 | /* Controls pretty printing of arrays. */ | |
262 | ||
263 | static void | |
264 | show_prettyformat_arrays (struct ui_file *file, int from_tty, | |
265 | struct cmd_list_element *c, const char *value) | |
266 | { | |
267 | gdb_printf (file, _("Pretty formatting of arrays is %s.\n"), value); | |
268 | } | |
269 | ||
270 | /* If nonzero, causes unions inside structures or other unions to be | |
271 | printed. */ | |
272 | ||
273 | static void | |
274 | show_unionprint (struct ui_file *file, int from_tty, | |
275 | struct cmd_list_element *c, const char *value) | |
276 | { | |
277 | gdb_printf (file, | |
278 | _("Printing of unions interior to structures is %s.\n"), | |
279 | value); | |
280 | } | |
281 | ||
282 | /* Controls the format of printing binary values. */ | |
283 | ||
284 | static void | |
285 | show_nibbles (struct ui_file *file, int from_tty, | |
286 | struct cmd_list_element *c, const char *value) | |
287 | { | |
288 | gdb_printf (file, | |
289 | _("Printing binary values in groups is %s.\n"), | |
290 | value); | |
291 | } | |
292 | ||
293 | /* If nonzero, causes machine addresses to be printed in certain contexts. */ | |
294 | ||
295 | static void | |
296 | show_addressprint (struct ui_file *file, int from_tty, | |
297 | struct cmd_list_element *c, const char *value) | |
298 | { | |
299 | gdb_printf (file, _("Printing of addresses is %s.\n"), value); | |
300 | } | |
301 | ||
302 | static void | |
303 | show_symbol_print (struct ui_file *file, int from_tty, | |
304 | struct cmd_list_element *c, const char *value) | |
305 | { | |
306 | gdb_printf (file, | |
307 | _("Printing of symbols when printing pointers is %s.\n"), | |
308 | value); | |
309 | } | |
310 | ||
311 | \f | |
312 | ||
313 | /* A helper function for val_print. When printing in "summary" mode, | |
314 | we want to print scalar arguments, but not aggregate arguments. | |
315 | This function distinguishes between the two. */ | |
316 | ||
317 | int | |
318 | val_print_scalar_type_p (struct type *type) | |
319 | { | |
320 | type = check_typedef (type); | |
321 | while (TYPE_IS_REFERENCE (type)) | |
322 | { | |
323 | type = type->target_type (); | |
324 | type = check_typedef (type); | |
325 | } | |
326 | switch (type->code ()) | |
327 | { | |
328 | case TYPE_CODE_ARRAY: | |
329 | case TYPE_CODE_STRUCT: | |
330 | case TYPE_CODE_UNION: | |
331 | case TYPE_CODE_SET: | |
332 | case TYPE_CODE_STRING: | |
333 | return 0; | |
334 | default: | |
335 | return 1; | |
336 | } | |
337 | } | |
338 | ||
339 | /* A helper function for val_print. When printing with limited depth we | |
340 | want to print string and scalar arguments, but not aggregate arguments. | |
341 | This function distinguishes between the two. */ | |
342 | ||
343 | static bool | |
344 | val_print_scalar_or_string_type_p (struct type *type, | |
345 | const struct language_defn *language) | |
346 | { | |
347 | return (val_print_scalar_type_p (type) | |
348 | || language->is_string_type_p (type)); | |
349 | } | |
350 | ||
351 | /* See valprint.h. */ | |
352 | ||
353 | int | |
354 | valprint_check_validity (struct ui_file *stream, | |
355 | struct type *type, | |
356 | LONGEST embedded_offset, | |
357 | const struct value *val) | |
358 | { | |
359 | type = check_typedef (type); | |
360 | ||
361 | if (type_not_associated (type)) | |
362 | { | |
363 | val_print_not_associated (stream); | |
364 | return 0; | |
365 | } | |
366 | ||
367 | if (type_not_allocated (type)) | |
368 | { | |
369 | val_print_not_allocated (stream); | |
370 | return 0; | |
371 | } | |
372 | ||
373 | if (type->code () != TYPE_CODE_UNION | |
374 | && type->code () != TYPE_CODE_STRUCT | |
375 | && type->code () != TYPE_CODE_ARRAY) | |
376 | { | |
377 | if (val->bits_any_optimized_out (TARGET_CHAR_BIT * embedded_offset, | |
378 | TARGET_CHAR_BIT * type->length ())) | |
379 | { | |
380 | val_print_optimized_out (val, stream); | |
381 | return 0; | |
382 | } | |
383 | ||
384 | if (val->bits_synthetic_pointer (TARGET_CHAR_BIT * embedded_offset, | |
385 | TARGET_CHAR_BIT * type->length ())) | |
386 | { | |
387 | const int is_ref = type->code () == TYPE_CODE_REF; | |
388 | int ref_is_addressable = 0; | |
389 | ||
390 | if (is_ref) | |
391 | { | |
392 | const struct value *deref_val = coerce_ref_if_computed (val); | |
393 | ||
394 | if (deref_val != NULL) | |
395 | ref_is_addressable = deref_val->lval () == lval_memory; | |
396 | } | |
397 | ||
398 | if (!is_ref || !ref_is_addressable) | |
399 | fputs_styled (_("<synthetic pointer>"), metadata_style.style (), | |
400 | stream); | |
401 | ||
402 | /* C++ references should be valid even if they're synthetic. */ | |
403 | return is_ref; | |
404 | } | |
405 | ||
406 | if (!val->bytes_available (embedded_offset, type->length ())) | |
407 | { | |
408 | val_print_unavailable (stream); | |
409 | return 0; | |
410 | } | |
411 | } | |
412 | ||
413 | return 1; | |
414 | } | |
415 | ||
416 | void | |
417 | val_print_optimized_out (const struct value *val, struct ui_file *stream) | |
418 | { | |
419 | if (val != NULL && val->lval () == lval_register) | |
420 | val_print_not_saved (stream); | |
421 | else | |
422 | fprintf_styled (stream, metadata_style.style (), _("<optimized out>")); | |
423 | } | |
424 | ||
425 | void | |
426 | val_print_not_saved (struct ui_file *stream) | |
427 | { | |
428 | fprintf_styled (stream, metadata_style.style (), _("<not saved>")); | |
429 | } | |
430 | ||
431 | void | |
432 | val_print_unavailable (struct ui_file *stream) | |
433 | { | |
434 | fprintf_styled (stream, metadata_style.style (), _("<unavailable>")); | |
435 | } | |
436 | ||
437 | void | |
438 | val_print_invalid_address (struct ui_file *stream) | |
439 | { | |
440 | fprintf_styled (stream, metadata_style.style (), _("<invalid address>")); | |
441 | } | |
442 | ||
443 | /* Print a pointer based on the type of its target. | |
444 | ||
445 | Arguments to this functions are roughly the same as those in | |
446 | generic_val_print. A difference is that ADDRESS is the address to print, | |
447 | with embedded_offset already added. ELTTYPE represents | |
448 | the pointed type after check_typedef. */ | |
449 | ||
450 | static void | |
451 | print_unpacked_pointer (struct type *type, struct type *elttype, | |
452 | CORE_ADDR address, struct ui_file *stream, | |
453 | const struct value_print_options *options) | |
454 | { | |
455 | struct gdbarch *gdbarch = type->arch (); | |
456 | ||
457 | if (elttype->code () == TYPE_CODE_FUNC) | |
458 | { | |
459 | /* Try to print what function it points to. */ | |
460 | print_function_pointer_address (options, gdbarch, address, stream); | |
461 | return; | |
462 | } | |
463 | ||
464 | if (options->symbol_print) | |
465 | print_address_demangle (options, gdbarch, address, stream, demangle); | |
466 | else if (options->addressprint) | |
467 | gdb_puts (paddress (gdbarch, address), stream); | |
468 | } | |
469 | ||
470 | /* generic_val_print helper for TYPE_CODE_ARRAY. */ | |
471 | ||
472 | static void | |
473 | generic_val_print_array (struct value *val, | |
474 | struct ui_file *stream, int recurse, | |
475 | const struct value_print_options *options, | |
476 | const struct | |
477 | generic_val_print_decorations *decorations) | |
478 | { | |
479 | struct type *type = check_typedef (val->type ()); | |
480 | struct type *unresolved_elttype = type->target_type (); | |
481 | struct type *elttype = check_typedef (unresolved_elttype); | |
482 | ||
483 | if (type->length () > 0 && unresolved_elttype->length () > 0) | |
484 | { | |
485 | LONGEST low_bound, high_bound; | |
486 | ||
487 | if (!get_array_bounds (type, &low_bound, &high_bound)) | |
488 | error (_("Could not determine the array high bound")); | |
489 | ||
490 | gdb_puts (decorations->array_start, stream); | |
491 | value_print_array_elements (val, stream, recurse, options, 0); | |
492 | gdb_puts (decorations->array_end, stream); | |
493 | } | |
494 | else | |
495 | { | |
496 | /* Array of unspecified length: treat like pointer to first elt. */ | |
497 | print_unpacked_pointer (type, elttype, val->address (), | |
498 | stream, options); | |
499 | } | |
500 | ||
501 | } | |
502 | ||
503 | /* generic_val_print helper for TYPE_CODE_STRING. */ | |
504 | ||
505 | static void | |
506 | generic_val_print_string (struct value *val, | |
507 | struct ui_file *stream, int recurse, | |
508 | const struct value_print_options *options, | |
509 | const struct generic_val_print_decorations | |
510 | *decorations) | |
511 | { | |
512 | struct type *type = check_typedef (val->type ()); | |
513 | struct type *unresolved_elttype = type->target_type (); | |
514 | struct type *elttype = check_typedef (unresolved_elttype); | |
515 | ||
516 | if (type->length () > 0 && unresolved_elttype->length () > 0) | |
517 | { | |
518 | LONGEST low_bound, high_bound; | |
519 | ||
520 | if (!get_array_bounds (type, &low_bound, &high_bound)) | |
521 | error (_("Could not determine the array high bound")); | |
522 | ||
523 | const gdb_byte *valaddr = val->contents_for_printing ().data (); | |
524 | int force_ellipses = 0; | |
525 | enum bfd_endian byte_order = type_byte_order (type); | |
526 | int eltlen, len; | |
527 | ||
528 | eltlen = elttype->length (); | |
529 | len = high_bound - low_bound + 1; | |
530 | ||
531 | /* If requested, look for the first null char and only | |
532 | print elements up to it. */ | |
533 | if (options->stop_print_at_null) | |
534 | { | |
535 | unsigned int print_max_chars = get_print_max_chars (options); | |
536 | unsigned int temp_len; | |
537 | ||
538 | for (temp_len = 0; | |
539 | (temp_len < len | |
540 | && temp_len < print_max_chars | |
541 | && extract_unsigned_integer (valaddr + temp_len * eltlen, | |
542 | eltlen, byte_order) != 0); | |
543 | ++temp_len) | |
544 | ; | |
545 | ||
546 | /* Force printstr to print ellipses if | |
547 | we've printed the maximum characters and | |
548 | the next character is not \000. */ | |
549 | if (temp_len == print_max_chars && temp_len < len) | |
550 | { | |
551 | ULONGEST ival | |
552 | = extract_unsigned_integer (valaddr + temp_len * eltlen, | |
553 | eltlen, byte_order); | |
554 | if (ival != 0) | |
555 | force_ellipses = 1; | |
556 | } | |
557 | ||
558 | len = temp_len; | |
559 | } | |
560 | ||
561 | current_language->printstr (stream, unresolved_elttype, valaddr, len, | |
562 | nullptr, force_ellipses, options); | |
563 | } | |
564 | else | |
565 | { | |
566 | /* Array of unspecified length: treat like pointer to first elt. */ | |
567 | print_unpacked_pointer (type, elttype, val->address (), | |
568 | stream, options); | |
569 | } | |
570 | ||
571 | } | |
572 | ||
573 | /* generic_value_print helper for TYPE_CODE_PTR. */ | |
574 | ||
575 | static void | |
576 | generic_value_print_ptr (struct value *val, struct ui_file *stream, | |
577 | const struct value_print_options *options) | |
578 | { | |
579 | ||
580 | if (options->format && options->format != 's') | |
581 | value_print_scalar_formatted (val, options, 0, stream); | |
582 | else | |
583 | { | |
584 | struct type *type = check_typedef (val->type ()); | |
585 | struct type *elttype = check_typedef (type->target_type ()); | |
586 | const gdb_byte *valaddr = val->contents_for_printing ().data (); | |
587 | CORE_ADDR addr = unpack_pointer (type, valaddr); | |
588 | ||
589 | print_unpacked_pointer (type, elttype, addr, stream, options); | |
590 | } | |
591 | } | |
592 | ||
593 | ||
594 | /* Print '@' followed by the address contained in ADDRESS_BUFFER. */ | |
595 | ||
596 | static void | |
597 | print_ref_address (struct type *type, const gdb_byte *address_buffer, | |
598 | int embedded_offset, struct ui_file *stream) | |
599 | { | |
600 | struct gdbarch *gdbarch = type->arch (); | |
601 | ||
602 | if (address_buffer != NULL) | |
603 | { | |
604 | CORE_ADDR address | |
605 | = extract_typed_address (address_buffer + embedded_offset, type); | |
606 | ||
607 | gdb_printf (stream, "@"); | |
608 | gdb_puts (paddress (gdbarch, address), stream); | |
609 | } | |
610 | /* Else: we have a non-addressable value, such as a DW_AT_const_value. */ | |
611 | } | |
612 | ||
613 | /* If VAL is addressable, return the value contents buffer of a value that | |
614 | represents a pointer to VAL. Otherwise return NULL. */ | |
615 | ||
616 | static const gdb_byte * | |
617 | get_value_addr_contents (struct value *deref_val) | |
618 | { | |
619 | gdb_assert (deref_val != NULL); | |
620 | ||
621 | if (deref_val->lval () == lval_memory) | |
622 | return value_addr (deref_val)->contents_for_printing ().data (); | |
623 | else | |
624 | { | |
625 | /* We have a non-addressable value, such as a DW_AT_const_value. */ | |
626 | return NULL; | |
627 | } | |
628 | } | |
629 | ||
630 | /* generic_val_print helper for TYPE_CODE_{RVALUE_,}REF. */ | |
631 | ||
632 | static void | |
633 | generic_val_print_ref (struct type *type, | |
634 | int embedded_offset, struct ui_file *stream, int recurse, | |
635 | struct value *original_value, | |
636 | const struct value_print_options *options) | |
637 | { | |
638 | struct type *elttype = check_typedef (type->target_type ()); | |
639 | struct value *deref_val = NULL; | |
640 | const bool value_is_synthetic | |
641 | = original_value->bits_synthetic_pointer (TARGET_CHAR_BIT * embedded_offset, | |
642 | TARGET_CHAR_BIT * type->length ()); | |
643 | const int must_coerce_ref = ((options->addressprint && value_is_synthetic) | |
644 | || options->deref_ref); | |
645 | const int type_is_defined = elttype->code () != TYPE_CODE_UNDEF; | |
646 | const gdb_byte *valaddr = original_value->contents_for_printing ().data (); | |
647 | ||
648 | if (must_coerce_ref && type_is_defined) | |
649 | { | |
650 | deref_val = coerce_ref_if_computed (original_value); | |
651 | ||
652 | if (deref_val != NULL) | |
653 | { | |
654 | /* More complicated computed references are not supported. */ | |
655 | gdb_assert (embedded_offset == 0); | |
656 | } | |
657 | else | |
658 | deref_val = value_at (type->target_type (), | |
659 | unpack_pointer (type, valaddr + embedded_offset)); | |
660 | } | |
661 | /* Else, original_value isn't a synthetic reference or we don't have to print | |
662 | the reference's contents. | |
663 | ||
664 | Notice that for references to TYPE_CODE_STRUCT, 'set print object on' will | |
665 | cause original_value to be a not_lval instead of an lval_computed, | |
666 | which will make value_bits_synthetic_pointer return false. | |
667 | This happens because if options->objectprint is true, c_value_print will | |
668 | overwrite original_value's contents with the result of coercing | |
669 | the reference through value_addr, and then set its type back to | |
670 | TYPE_CODE_REF. In that case we don't have to coerce the reference again; | |
671 | we can simply treat it as non-synthetic and move on. */ | |
672 | ||
673 | if (options->addressprint) | |
674 | { | |
675 | const gdb_byte *address = (value_is_synthetic && type_is_defined | |
676 | ? get_value_addr_contents (deref_val) | |
677 | : valaddr); | |
678 | ||
679 | print_ref_address (type, address, embedded_offset, stream); | |
680 | ||
681 | if (options->deref_ref) | |
682 | gdb_puts (": ", stream); | |
683 | } | |
684 | ||
685 | if (options->deref_ref) | |
686 | { | |
687 | if (type_is_defined) | |
688 | common_val_print (deref_val, stream, recurse, options, | |
689 | current_language); | |
690 | else | |
691 | gdb_puts ("???", stream); | |
692 | } | |
693 | } | |
694 | ||
695 | /* Helper function for generic_val_print_enum. | |
696 | This is also used to print enums in TYPE_CODE_FLAGS values. */ | |
697 | ||
698 | static void | |
699 | generic_val_print_enum_1 (struct type *type, LONGEST val, | |
700 | struct ui_file *stream) | |
701 | { | |
702 | unsigned int i; | |
703 | unsigned int len; | |
704 | ||
705 | len = type->num_fields (); | |
706 | for (i = 0; i < len; i++) | |
707 | { | |
708 | QUIT; | |
709 | if (val == type->field (i).loc_enumval ()) | |
710 | { | |
711 | break; | |
712 | } | |
713 | } | |
714 | if (i < len) | |
715 | { | |
716 | fputs_styled (type->field (i).name (), variable_name_style.style (), | |
717 | stream); | |
718 | } | |
719 | else if (type->is_flag_enum ()) | |
720 | { | |
721 | int first = 1; | |
722 | ||
723 | /* We have a "flag" enum, so we try to decompose it into pieces as | |
724 | appropriate. The enum may have multiple enumerators representing | |
725 | the same bit, in which case we choose to only print the first one | |
726 | we find. */ | |
727 | for (i = 0; i < len; ++i) | |
728 | { | |
729 | QUIT; | |
730 | ||
731 | ULONGEST enumval = type->field (i).loc_enumval (); | |
732 | int nbits = count_one_bits_ll (enumval); | |
733 | ||
734 | gdb_assert (nbits == 0 || nbits == 1); | |
735 | ||
736 | if ((val & enumval) != 0) | |
737 | { | |
738 | if (first) | |
739 | { | |
740 | gdb_puts ("(", stream); | |
741 | first = 0; | |
742 | } | |
743 | else | |
744 | gdb_puts (" | ", stream); | |
745 | ||
746 | val &= ~type->field (i).loc_enumval (); | |
747 | fputs_styled (type->field (i).name (), | |
748 | variable_name_style.style (), stream); | |
749 | } | |
750 | } | |
751 | ||
752 | if (val != 0) | |
753 | { | |
754 | /* There are leftover bits, print them. */ | |
755 | if (first) | |
756 | gdb_puts ("(", stream); | |
757 | else | |
758 | gdb_puts (" | ", stream); | |
759 | ||
760 | gdb_puts ("unknown: 0x", stream); | |
761 | print_longest (stream, 'x', 0, val); | |
762 | gdb_puts (")", stream); | |
763 | } | |
764 | else if (first) | |
765 | { | |
766 | /* Nothing has been printed and the value is 0, the enum value must | |
767 | have been 0. */ | |
768 | gdb_puts ("0", stream); | |
769 | } | |
770 | else | |
771 | { | |
772 | /* Something has been printed, close the parenthesis. */ | |
773 | gdb_puts (")", stream); | |
774 | } | |
775 | } | |
776 | else | |
777 | print_longest (stream, 'd', 0, val); | |
778 | } | |
779 | ||
780 | /* generic_val_print helper for TYPE_CODE_ENUM. */ | |
781 | ||
782 | static void | |
783 | generic_val_print_enum (struct type *type, | |
784 | int embedded_offset, struct ui_file *stream, | |
785 | struct value *original_value, | |
786 | const struct value_print_options *options) | |
787 | { | |
788 | LONGEST val; | |
789 | struct gdbarch *gdbarch = type->arch (); | |
790 | int unit_size = gdbarch_addressable_memory_unit_size (gdbarch); | |
791 | ||
792 | gdb_assert (!options->format); | |
793 | ||
794 | const gdb_byte *valaddr = original_value->contents_for_printing ().data (); | |
795 | ||
796 | val = unpack_long (type, valaddr + embedded_offset * unit_size); | |
797 | ||
798 | generic_val_print_enum_1 (type, val, stream); | |
799 | } | |
800 | ||
801 | /* generic_val_print helper for TYPE_CODE_FUNC and TYPE_CODE_METHOD. */ | |
802 | ||
803 | static void | |
804 | generic_val_print_func (struct type *type, | |
805 | int embedded_offset, CORE_ADDR address, | |
806 | struct ui_file *stream, | |
807 | struct value *original_value, | |
808 | const struct value_print_options *options) | |
809 | { | |
810 | struct gdbarch *gdbarch = type->arch (); | |
811 | ||
812 | gdb_assert (!options->format); | |
813 | ||
814 | /* FIXME, we should consider, at least for ANSI C language, | |
815 | eliminating the distinction made between FUNCs and POINTERs to | |
816 | FUNCs. */ | |
817 | gdb_printf (stream, "{"); | |
818 | type_print (type, "", stream, -1); | |
819 | gdb_printf (stream, "} "); | |
820 | /* Try to print what function it points to, and its address. */ | |
821 | print_address_demangle (options, gdbarch, address, stream, demangle); | |
822 | } | |
823 | ||
824 | /* generic_value_print helper for TYPE_CODE_BOOL. */ | |
825 | ||
826 | static void | |
827 | generic_value_print_bool | |
828 | (struct value *value, struct ui_file *stream, | |
829 | const struct value_print_options *options, | |
830 | const struct generic_val_print_decorations *decorations) | |
831 | { | |
832 | if (options->format || options->output_format) | |
833 | { | |
834 | struct value_print_options opts = *options; | |
835 | opts.format = (options->format ? options->format | |
836 | : options->output_format); | |
837 | value_print_scalar_formatted (value, &opts, 0, stream); | |
838 | } | |
839 | else | |
840 | { | |
841 | const gdb_byte *valaddr = value->contents_for_printing ().data (); | |
842 | struct type *type = check_typedef (value->type ()); | |
843 | LONGEST val = unpack_long (type, valaddr); | |
844 | if (val == 0) | |
845 | gdb_puts (decorations->false_name, stream); | |
846 | else if (val == 1) | |
847 | gdb_puts (decorations->true_name, stream); | |
848 | else | |
849 | print_longest (stream, 'd', 0, val); | |
850 | } | |
851 | } | |
852 | ||
853 | /* generic_value_print helper for TYPE_CODE_INT. */ | |
854 | ||
855 | static void | |
856 | generic_value_print_int (struct value *val, struct ui_file *stream, | |
857 | const struct value_print_options *options) | |
858 | { | |
859 | struct value_print_options opts = *options; | |
860 | ||
861 | opts.format = (options->format ? options->format | |
862 | : options->output_format); | |
863 | value_print_scalar_formatted (val, &opts, 0, stream); | |
864 | } | |
865 | ||
866 | /* generic_value_print helper for TYPE_CODE_CHAR. */ | |
867 | ||
868 | static void | |
869 | generic_value_print_char (struct value *value, struct ui_file *stream, | |
870 | const struct value_print_options *options) | |
871 | { | |
872 | if (options->format || options->output_format) | |
873 | { | |
874 | struct value_print_options opts = *options; | |
875 | ||
876 | opts.format = (options->format ? options->format | |
877 | : options->output_format); | |
878 | value_print_scalar_formatted (value, &opts, 0, stream); | |
879 | } | |
880 | else | |
881 | { | |
882 | struct type *unresolved_type = value->type (); | |
883 | struct type *type = check_typedef (unresolved_type); | |
884 | const gdb_byte *valaddr = value->contents_for_printing ().data (); | |
885 | ||
886 | LONGEST val = unpack_long (type, valaddr); | |
887 | if (type->is_unsigned ()) | |
888 | gdb_printf (stream, "%u", (unsigned int) val); | |
889 | else | |
890 | gdb_printf (stream, "%d", (int) val); | |
891 | gdb_puts (" ", stream); | |
892 | current_language->printchar (val, unresolved_type, stream); | |
893 | } | |
894 | } | |
895 | ||
896 | /* generic_val_print helper for TYPE_CODE_FLT and TYPE_CODE_DECFLOAT. */ | |
897 | ||
898 | static void | |
899 | generic_val_print_float (struct type *type, struct ui_file *stream, | |
900 | struct value *original_value, | |
901 | const struct value_print_options *options) | |
902 | { | |
903 | gdb_assert (!options->format); | |
904 | ||
905 | const gdb_byte *valaddr = original_value->contents_for_printing ().data (); | |
906 | ||
907 | print_floating (valaddr, type, stream); | |
908 | } | |
909 | ||
910 | /* generic_val_print helper for TYPE_CODE_FIXED_POINT. */ | |
911 | ||
912 | static void | |
913 | generic_val_print_fixed_point (struct value *val, struct ui_file *stream, | |
914 | const struct value_print_options *options) | |
915 | { | |
916 | if (options->format) | |
917 | value_print_scalar_formatted (val, options, 0, stream); | |
918 | else | |
919 | { | |
920 | struct type *type = val->type (); | |
921 | ||
922 | const gdb_byte *valaddr = val->contents_for_printing ().data (); | |
923 | gdb_mpf f; | |
924 | ||
925 | f.read_fixed_point (gdb::make_array_view (valaddr, type->length ()), | |
926 | type_byte_order (type), type->is_unsigned (), | |
927 | type->fixed_point_scaling_factor ()); | |
928 | ||
929 | const char *fmt = type->length () < 4 ? "%.11Fg" : "%.17Fg"; | |
930 | std::string str = f.str (fmt); | |
931 | gdb_printf (stream, "%s", str.c_str ()); | |
932 | } | |
933 | } | |
934 | ||
935 | /* generic_value_print helper for TYPE_CODE_COMPLEX. */ | |
936 | ||
937 | static void | |
938 | generic_value_print_complex (struct value *val, struct ui_file *stream, | |
939 | const struct value_print_options *options, | |
940 | const struct generic_val_print_decorations | |
941 | *decorations) | |
942 | { | |
943 | gdb_printf (stream, "%s", decorations->complex_prefix); | |
944 | ||
945 | struct value *real_part = value_real_part (val); | |
946 | value_print_scalar_formatted (real_part, options, 0, stream); | |
947 | gdb_printf (stream, "%s", decorations->complex_infix); | |
948 | ||
949 | struct value *imag_part = value_imaginary_part (val); | |
950 | value_print_scalar_formatted (imag_part, options, 0, stream); | |
951 | gdb_printf (stream, "%s", decorations->complex_suffix); | |
952 | } | |
953 | ||
954 | /* generic_value_print helper for TYPE_CODE_MEMBERPTR. */ | |
955 | ||
956 | static void | |
957 | generic_value_print_memberptr | |
958 | (struct value *val, struct ui_file *stream, | |
959 | int recurse, | |
960 | const struct value_print_options *options, | |
961 | const struct generic_val_print_decorations *decorations) | |
962 | { | |
963 | if (!options->format) | |
964 | { | |
965 | /* Member pointers are essentially specific to C++, and so if we | |
966 | encounter one, we should print it according to C++ rules. */ | |
967 | struct type *type = check_typedef (val->type ()); | |
968 | const gdb_byte *valaddr = val->contents_for_printing ().data (); | |
969 | cp_print_class_member (valaddr, type, stream, "&"); | |
970 | } | |
971 | else | |
972 | value_print_scalar_formatted (val, options, 0, stream); | |
973 | } | |
974 | ||
975 | /* See valprint.h. */ | |
976 | ||
977 | void | |
978 | generic_value_print (struct value *val, struct ui_file *stream, int recurse, | |
979 | const struct value_print_options *options, | |
980 | const struct generic_val_print_decorations *decorations) | |
981 | { | |
982 | struct type *type = val->type (); | |
983 | ||
984 | type = check_typedef (type); | |
985 | ||
986 | if (is_fixed_point_type (type)) | |
987 | type = type->fixed_point_type_base_type (); | |
988 | ||
989 | /* Widen a subrange to its target type, then use that type's | |
990 | printer. */ | |
991 | while (type->code () == TYPE_CODE_RANGE) | |
992 | { | |
993 | type = check_typedef (type->target_type ()); | |
994 | val = value_cast (type, val); | |
995 | } | |
996 | ||
997 | switch (type->code ()) | |
998 | { | |
999 | case TYPE_CODE_ARRAY: | |
1000 | generic_val_print_array (val, stream, recurse, options, decorations); | |
1001 | break; | |
1002 | ||
1003 | case TYPE_CODE_STRING: | |
1004 | generic_val_print_string (val, stream, recurse, options, decorations); | |
1005 | break; | |
1006 | ||
1007 | case TYPE_CODE_MEMBERPTR: | |
1008 | generic_value_print_memberptr (val, stream, recurse, options, | |
1009 | decorations); | |
1010 | break; | |
1011 | ||
1012 | case TYPE_CODE_PTR: | |
1013 | generic_value_print_ptr (val, stream, options); | |
1014 | break; | |
1015 | ||
1016 | case TYPE_CODE_REF: | |
1017 | case TYPE_CODE_RVALUE_REF: | |
1018 | generic_val_print_ref (type, 0, stream, recurse, | |
1019 | val, options); | |
1020 | break; | |
1021 | ||
1022 | case TYPE_CODE_ENUM: | |
1023 | if (options->format) | |
1024 | value_print_scalar_formatted (val, options, 0, stream); | |
1025 | else | |
1026 | generic_val_print_enum (type, 0, stream, val, options); | |
1027 | break; | |
1028 | ||
1029 | case TYPE_CODE_FLAGS: | |
1030 | if (options->format) | |
1031 | value_print_scalar_formatted (val, options, 0, stream); | |
1032 | else | |
1033 | val_print_type_code_flags (type, val, 0, stream); | |
1034 | break; | |
1035 | ||
1036 | case TYPE_CODE_FUNC: | |
1037 | case TYPE_CODE_METHOD: | |
1038 | if (options->format) | |
1039 | value_print_scalar_formatted (val, options, 0, stream); | |
1040 | else | |
1041 | generic_val_print_func (type, 0, val->address (), stream, | |
1042 | val, options); | |
1043 | break; | |
1044 | ||
1045 | case TYPE_CODE_BOOL: | |
1046 | generic_value_print_bool (val, stream, options, decorations); | |
1047 | break; | |
1048 | ||
1049 | case TYPE_CODE_INT: | |
1050 | generic_value_print_int (val, stream, options); | |
1051 | break; | |
1052 | ||
1053 | case TYPE_CODE_CHAR: | |
1054 | generic_value_print_char (val, stream, options); | |
1055 | break; | |
1056 | ||
1057 | case TYPE_CODE_FLT: | |
1058 | case TYPE_CODE_DECFLOAT: | |
1059 | if (options->format) | |
1060 | value_print_scalar_formatted (val, options, 0, stream); | |
1061 | else | |
1062 | generic_val_print_float (type, stream, val, options); | |
1063 | break; | |
1064 | ||
1065 | case TYPE_CODE_FIXED_POINT: | |
1066 | generic_val_print_fixed_point (val, stream, options); | |
1067 | break; | |
1068 | ||
1069 | case TYPE_CODE_VOID: | |
1070 | gdb_puts (decorations->void_name, stream); | |
1071 | break; | |
1072 | ||
1073 | case TYPE_CODE_ERROR: | |
1074 | gdb_printf (stream, "%s", TYPE_ERROR_NAME (type)); | |
1075 | break; | |
1076 | ||
1077 | case TYPE_CODE_UNDEF: | |
1078 | /* This happens (without TYPE_STUB set) on systems which don't use | |
1079 | dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar" | |
1080 | and no complete type for struct foo in that file. */ | |
1081 | fprintf_styled (stream, metadata_style.style (), _("<incomplete type>")); | |
1082 | break; | |
1083 | ||
1084 | case TYPE_CODE_COMPLEX: | |
1085 | generic_value_print_complex (val, stream, options, decorations); | |
1086 | break; | |
1087 | ||
1088 | case TYPE_CODE_METHODPTR: | |
1089 | cplus_print_method_ptr (val->contents_for_printing ().data (), type, | |
1090 | stream); | |
1091 | break; | |
1092 | ||
1093 | case TYPE_CODE_UNION: | |
1094 | case TYPE_CODE_STRUCT: | |
1095 | default: | |
1096 | error (_("Unhandled type code %d in symbol table."), | |
1097 | type->code ()); | |
1098 | } | |
1099 | } | |
1100 | ||
1101 | /* Print using the given LANGUAGE the value VAL onto stream STREAM according | |
1102 | to OPTIONS. | |
1103 | ||
1104 | This is a preferable interface to val_print, above, because it uses | |
1105 | GDB's value mechanism. */ | |
1106 | ||
1107 | void | |
1108 | common_val_print (struct value *value, struct ui_file *stream, int recurse, | |
1109 | const struct value_print_options *options, | |
1110 | const struct language_defn *language) | |
1111 | { | |
1112 | if (language->la_language == language_ada) | |
1113 | /* The value might have a dynamic type, which would cause trouble | |
1114 | below when trying to extract the value contents (since the value | |
1115 | size is determined from the type size which is unknown). So | |
1116 | get a fixed representation of our value. */ | |
1117 | value = ada_to_fixed_value (value); | |
1118 | ||
1119 | if (value->lazy ()) | |
1120 | value->fetch_lazy (); | |
1121 | ||
1122 | struct value_print_options local_opts = *options; | |
1123 | struct type *type = value->type (); | |
1124 | struct type *real_type = check_typedef (type); | |
1125 | ||
1126 | if (local_opts.prettyformat == Val_prettyformat_default) | |
1127 | local_opts.prettyformat = (local_opts.prettyformat_structs | |
1128 | ? Val_prettyformat : Val_no_prettyformat); | |
1129 | ||
1130 | QUIT; | |
1131 | ||
1132 | if (!valprint_check_validity (stream, real_type, 0, value)) | |
1133 | return; | |
1134 | ||
1135 | if (!options->raw) | |
1136 | { | |
1137 | if (apply_ext_lang_val_pretty_printer (value, stream, recurse, options, | |
1138 | language)) | |
1139 | return; | |
1140 | } | |
1141 | ||
1142 | /* Ensure that the type is complete and not just a stub. If the type is | |
1143 | only a stub and we can't find and substitute its complete type, then | |
1144 | print appropriate string and return. */ | |
1145 | ||
1146 | if (real_type->is_stub ()) | |
1147 | { | |
1148 | fprintf_styled (stream, metadata_style.style (), _("<incomplete type>")); | |
1149 | return; | |
1150 | } | |
1151 | ||
1152 | /* Handle summary mode. If the value is a scalar, print it; | |
1153 | otherwise, print an ellipsis. */ | |
1154 | if (options->summary && !val_print_scalar_type_p (type)) | |
1155 | { | |
1156 | gdb_printf (stream, "..."); | |
1157 | return; | |
1158 | } | |
1159 | ||
1160 | /* If this value is too deep then don't print it. */ | |
1161 | if (!val_print_scalar_or_string_type_p (type, language) | |
1162 | && val_print_check_max_depth (stream, recurse, options, language)) | |
1163 | return; | |
1164 | ||
1165 | try | |
1166 | { | |
1167 | language->value_print_inner (value, stream, recurse, &local_opts); | |
1168 | } | |
1169 | catch (const gdb_exception_error &except) | |
1170 | { | |
1171 | fprintf_styled (stream, metadata_style.style (), | |
1172 | _("<error reading variable: %s>"), except.what ()); | |
1173 | } | |
1174 | } | |
1175 | ||
1176 | /* See valprint.h. */ | |
1177 | ||
1178 | bool | |
1179 | val_print_check_max_depth (struct ui_file *stream, int recurse, | |
1180 | const struct value_print_options *options, | |
1181 | const struct language_defn *language) | |
1182 | { | |
1183 | if (options->max_depth > -1 && recurse >= options->max_depth) | |
1184 | { | |
1185 | gdb_assert (language->struct_too_deep_ellipsis () != NULL); | |
1186 | gdb_puts (language->struct_too_deep_ellipsis (), stream); | |
1187 | return true; | |
1188 | } | |
1189 | ||
1190 | return false; | |
1191 | } | |
1192 | ||
1193 | /* Check whether the value VAL is printable. Return 1 if it is; | |
1194 | return 0 and print an appropriate error message to STREAM according to | |
1195 | OPTIONS if it is not. */ | |
1196 | ||
1197 | static int | |
1198 | value_check_printable (struct value *val, struct ui_file *stream, | |
1199 | const struct value_print_options *options) | |
1200 | { | |
1201 | if (val == 0) | |
1202 | { | |
1203 | fprintf_styled (stream, metadata_style.style (), | |
1204 | _("<address of value unknown>")); | |
1205 | return 0; | |
1206 | } | |
1207 | ||
1208 | if (val->entirely_optimized_out ()) | |
1209 | { | |
1210 | if (options->summary && !val_print_scalar_type_p (val->type ())) | |
1211 | gdb_printf (stream, "..."); | |
1212 | else | |
1213 | val_print_optimized_out (val, stream); | |
1214 | return 0; | |
1215 | } | |
1216 | ||
1217 | if (val->entirely_unavailable ()) | |
1218 | { | |
1219 | if (options->summary && !val_print_scalar_type_p (val->type ())) | |
1220 | gdb_printf (stream, "..."); | |
1221 | else | |
1222 | val_print_unavailable (stream); | |
1223 | return 0; | |
1224 | } | |
1225 | ||
1226 | if (val->type ()->code () == TYPE_CODE_INTERNAL_FUNCTION) | |
1227 | { | |
1228 | fprintf_styled (stream, metadata_style.style (), | |
1229 | _("<internal function %s>"), | |
1230 | value_internal_function_name (val)); | |
1231 | return 0; | |
1232 | } | |
1233 | ||
1234 | if (type_not_allocated (val->type ())) | |
1235 | { | |
1236 | val_print_not_allocated (stream); | |
1237 | return 0; | |
1238 | } | |
1239 | ||
1240 | return 1; | |
1241 | } | |
1242 | ||
1243 | /* See valprint.h. */ | |
1244 | ||
1245 | void | |
1246 | common_val_print_checked (struct value *val, struct ui_file *stream, | |
1247 | int recurse, | |
1248 | const struct value_print_options *options, | |
1249 | const struct language_defn *language) | |
1250 | { | |
1251 | if (!value_check_printable (val, stream, options)) | |
1252 | return; | |
1253 | common_val_print (val, stream, recurse, options, language); | |
1254 | } | |
1255 | ||
1256 | /* Print on stream STREAM the value VAL according to OPTIONS. The value | |
1257 | is printed using the current_language syntax. */ | |
1258 | ||
1259 | void | |
1260 | value_print (struct value *val, struct ui_file *stream, | |
1261 | const struct value_print_options *options) | |
1262 | { | |
1263 | scoped_value_mark free_values; | |
1264 | ||
1265 | if (!value_check_printable (val, stream, options)) | |
1266 | return; | |
1267 | ||
1268 | if (!options->raw) | |
1269 | { | |
1270 | int r | |
1271 | = apply_ext_lang_val_pretty_printer (val, stream, 0, options, | |
1272 | current_language); | |
1273 | ||
1274 | if (r) | |
1275 | return; | |
1276 | } | |
1277 | ||
1278 | current_language->value_print (val, stream, options); | |
1279 | } | |
1280 | ||
1281 | /* Meant to be used in debug sessions, so don't export it in a header file. */ | |
1282 | extern void ATTRIBUTE_UNUSED debug_val (struct value *val); | |
1283 | ||
1284 | /* Print VAL. */ | |
1285 | ||
1286 | void ATTRIBUTE_UNUSED | |
1287 | debug_val (struct value *val) | |
1288 | { | |
1289 | value_print (val, gdb_stdlog, &user_print_options); | |
1290 | gdb_flush (gdb_stdlog); | |
1291 | } | |
1292 | ||
1293 | static void | |
1294 | val_print_type_code_flags (struct type *type, struct value *original_value, | |
1295 | int embedded_offset, struct ui_file *stream) | |
1296 | { | |
1297 | const gdb_byte *valaddr = (original_value->contents_for_printing ().data () | |
1298 | + embedded_offset); | |
1299 | ULONGEST val = unpack_long (type, valaddr); | |
1300 | int field, nfields = type->num_fields (); | |
1301 | struct gdbarch *gdbarch = type->arch (); | |
1302 | struct type *bool_type = builtin_type (gdbarch)->builtin_bool; | |
1303 | ||
1304 | gdb_puts ("[", stream); | |
1305 | for (field = 0; field < nfields; field++) | |
1306 | { | |
1307 | if (type->field (field).name ()[0] != '\0') | |
1308 | { | |
1309 | struct type *field_type = type->field (field).type (); | |
1310 | ||
1311 | if (field_type == bool_type | |
1312 | /* We require boolean types here to be one bit wide. This is a | |
1313 | problematic place to notify the user of an internal error | |
1314 | though. Instead just fall through and print the field as an | |
1315 | int. */ | |
1316 | && type->field (field).bitsize () == 1) | |
1317 | { | |
1318 | if (val & ((ULONGEST)1 << type->field (field).loc_bitpos ())) | |
1319 | gdb_printf | |
1320 | (stream, " %ps", | |
1321 | styled_string (variable_name_style.style (), | |
1322 | type->field (field).name ())); | |
1323 | } | |
1324 | else | |
1325 | { | |
1326 | unsigned field_len = type->field (field).bitsize (); | |
1327 | ULONGEST field_val = val >> type->field (field).loc_bitpos (); | |
1328 | ||
1329 | if (field_len < sizeof (ULONGEST) * TARGET_CHAR_BIT) | |
1330 | field_val &= ((ULONGEST) 1 << field_len) - 1; | |
1331 | gdb_printf (stream, " %ps=", | |
1332 | styled_string (variable_name_style.style (), | |
1333 | type->field (field).name ())); | |
1334 | if (field_type->code () == TYPE_CODE_ENUM) | |
1335 | generic_val_print_enum_1 (field_type, field_val, stream); | |
1336 | else | |
1337 | print_longest (stream, 'd', 0, field_val); | |
1338 | } | |
1339 | } | |
1340 | } | |
1341 | gdb_puts (" ]", stream); | |
1342 | } | |
1343 | ||
1344 | /* See valprint.h. */ | |
1345 | ||
1346 | void | |
1347 | value_print_scalar_formatted (struct value *val, | |
1348 | const struct value_print_options *options, | |
1349 | int size, | |
1350 | struct ui_file *stream) | |
1351 | { | |
1352 | struct type *type = check_typedef (val->type ()); | |
1353 | ||
1354 | gdb_assert (val != NULL); | |
1355 | ||
1356 | /* If we get here with a string format, try again without it. Go | |
1357 | all the way back to the language printers, which may call us | |
1358 | again. */ | |
1359 | if (options->format == 's') | |
1360 | { | |
1361 | struct value_print_options opts = *options; | |
1362 | opts.format = 0; | |
1363 | opts.deref_ref = false; | |
1364 | common_val_print (val, stream, 0, &opts, current_language); | |
1365 | return; | |
1366 | } | |
1367 | ||
1368 | /* value_contents_for_printing fetches all VAL's contents. They are | |
1369 | needed to check whether VAL is optimized-out or unavailable | |
1370 | below. */ | |
1371 | const gdb_byte *valaddr = val->contents_for_printing ().data (); | |
1372 | ||
1373 | /* A scalar object that does not have all bits available can't be | |
1374 | printed, because all bits contribute to its representation. */ | |
1375 | if (val->bits_any_optimized_out (0, | |
1376 | TARGET_CHAR_BIT * type->length ())) | |
1377 | val_print_optimized_out (val, stream); | |
1378 | else if (!val->bytes_available (0, type->length ())) | |
1379 | val_print_unavailable (stream); | |
1380 | else | |
1381 | print_scalar_formatted (valaddr, type, options, size, stream); | |
1382 | } | |
1383 | ||
1384 | /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g. | |
1385 | The raison d'etre of this function is to consolidate printing of | |
1386 | LONG_LONG's into this one function. The format chars b,h,w,g are | |
1387 | from print_scalar_formatted(). Numbers are printed using C | |
1388 | format. | |
1389 | ||
1390 | USE_C_FORMAT means to use C format in all cases. Without it, | |
1391 | 'o' and 'x' format do not include the standard C radix prefix | |
1392 | (leading 0 or 0x). | |
1393 | ||
1394 | Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL | |
1395 | and was intended to request formatting according to the current | |
1396 | language and would be used for most integers that GDB prints. The | |
1397 | exceptional cases were things like protocols where the format of | |
1398 | the integer is a protocol thing, not a user-visible thing). The | |
1399 | parameter remains to preserve the information of what things might | |
1400 | be printed with language-specific format, should we ever resurrect | |
1401 | that capability. */ | |
1402 | ||
1403 | void | |
1404 | print_longest (struct ui_file *stream, int format, int use_c_format, | |
1405 | LONGEST val_long) | |
1406 | { | |
1407 | const char *val; | |
1408 | ||
1409 | switch (format) | |
1410 | { | |
1411 | case 'd': | |
1412 | val = int_string (val_long, 10, 1, 0, 1); break; | |
1413 | case 'u': | |
1414 | val = int_string (val_long, 10, 0, 0, 1); break; | |
1415 | case 'x': | |
1416 | val = int_string (val_long, 16, 0, 0, use_c_format); break; | |
1417 | case 'b': | |
1418 | val = int_string (val_long, 16, 0, 2, 1); break; | |
1419 | case 'h': | |
1420 | val = int_string (val_long, 16, 0, 4, 1); break; | |
1421 | case 'w': | |
1422 | val = int_string (val_long, 16, 0, 8, 1); break; | |
1423 | case 'g': | |
1424 | val = int_string (val_long, 16, 0, 16, 1); break; | |
1425 | break; | |
1426 | case 'o': | |
1427 | val = int_string (val_long, 8, 0, 0, use_c_format); break; | |
1428 | default: | |
1429 | internal_error (_("failed internal consistency check")); | |
1430 | } | |
1431 | gdb_puts (val, stream); | |
1432 | } | |
1433 | ||
1434 | /* This used to be a macro, but I don't think it is called often enough | |
1435 | to merit such treatment. */ | |
1436 | /* Convert a LONGEST to an int. This is used in contexts (e.g. number of | |
1437 | arguments to a function, number in a value history, register number, etc.) | |
1438 | where the value must not be larger than can fit in an int. */ | |
1439 | ||
1440 | int | |
1441 | longest_to_int (LONGEST arg) | |
1442 | { | |
1443 | /* Let the compiler do the work. */ | |
1444 | int rtnval = (int) arg; | |
1445 | ||
1446 | /* Check for overflows or underflows. */ | |
1447 | if (sizeof (LONGEST) > sizeof (int)) | |
1448 | { | |
1449 | if (rtnval != arg) | |
1450 | { | |
1451 | error (_("Value out of range.")); | |
1452 | } | |
1453 | } | |
1454 | return (rtnval); | |
1455 | } | |
1456 | ||
1457 | /* Print a floating point value of floating-point type TYPE, | |
1458 | pointed to in GDB by VALADDR, on STREAM. */ | |
1459 | ||
1460 | void | |
1461 | print_floating (const gdb_byte *valaddr, struct type *type, | |
1462 | struct ui_file *stream) | |
1463 | { | |
1464 | std::string str = target_float_to_string (valaddr, type); | |
1465 | gdb_puts (str.c_str (), stream); | |
1466 | } | |
1467 | ||
1468 | void | |
1469 | print_binary_chars (struct ui_file *stream, const gdb_byte *valaddr, | |
1470 | unsigned len, enum bfd_endian byte_order, bool zero_pad, | |
1471 | const struct value_print_options *options) | |
1472 | { | |
1473 | const gdb_byte *p; | |
1474 | unsigned int i; | |
1475 | int b; | |
1476 | bool seen_a_one = false; | |
1477 | const char *digit_separator = nullptr; | |
1478 | ||
1479 | /* Declared "int" so it will be signed. | |
1480 | This ensures that right shift will shift in zeros. */ | |
1481 | ||
1482 | const int mask = 0x080; | |
1483 | ||
1484 | if (options->nibblesprint) | |
1485 | digit_separator = current_language->get_digit_separator(); | |
1486 | ||
1487 | if (byte_order == BFD_ENDIAN_BIG) | |
1488 | { | |
1489 | for (p = valaddr; | |
1490 | p < valaddr + len; | |
1491 | p++) | |
1492 | { | |
1493 | /* Every byte has 8 binary characters; peel off | |
1494 | and print from the MSB end. */ | |
1495 | ||
1496 | for (i = 0; i < (HOST_CHAR_BIT * sizeof (*p)); i++) | |
1497 | { | |
1498 | if (options->nibblesprint && seen_a_one && i % 4 == 0) | |
1499 | gdb_putc (*digit_separator, stream); | |
1500 | ||
1501 | if (*p & (mask >> i)) | |
1502 | b = '1'; | |
1503 | else | |
1504 | b = '0'; | |
1505 | ||
1506 | if (zero_pad || seen_a_one || b == '1') | |
1507 | gdb_putc (b, stream); | |
1508 | else if (options->nibblesprint) | |
1509 | { | |
1510 | if ((0xf0 & (mask >> i) && (*p & 0xf0)) | |
1511 | || (0x0f & (mask >> i) && (*p & 0x0f))) | |
1512 | gdb_putc (b, stream); | |
1513 | } | |
1514 | ||
1515 | if (b == '1') | |
1516 | seen_a_one = true; | |
1517 | } | |
1518 | } | |
1519 | } | |
1520 | else | |
1521 | { | |
1522 | for (p = valaddr + len - 1; | |
1523 | p >= valaddr; | |
1524 | p--) | |
1525 | { | |
1526 | for (i = 0; i < (HOST_CHAR_BIT * sizeof (*p)); i++) | |
1527 | { | |
1528 | if (options->nibblesprint && seen_a_one && i % 4 == 0) | |
1529 | gdb_putc (*digit_separator, stream); | |
1530 | ||
1531 | if (*p & (mask >> i)) | |
1532 | b = '1'; | |
1533 | else | |
1534 | b = '0'; | |
1535 | ||
1536 | if (zero_pad || seen_a_one || b == '1') | |
1537 | gdb_putc (b, stream); | |
1538 | else if (options->nibblesprint) | |
1539 | { | |
1540 | if ((0xf0 & (mask >> i) && (*p & 0xf0)) | |
1541 | || (0x0f & (mask >> i) && (*p & 0x0f))) | |
1542 | gdb_putc (b, stream); | |
1543 | } | |
1544 | ||
1545 | if (b == '1') | |
1546 | seen_a_one = true; | |
1547 | } | |
1548 | } | |
1549 | } | |
1550 | ||
1551 | /* When not zero-padding, ensure that something is printed when the | |
1552 | input is 0. */ | |
1553 | if (!zero_pad && !seen_a_one) | |
1554 | gdb_putc ('0', stream); | |
1555 | } | |
1556 | ||
1557 | /* A helper for print_octal_chars that emits a single octal digit, | |
1558 | optionally suppressing it if is zero and updating SEEN_A_ONE. */ | |
1559 | ||
1560 | static void | |
1561 | emit_octal_digit (struct ui_file *stream, bool *seen_a_one, int digit) | |
1562 | { | |
1563 | if (*seen_a_one || digit != 0) | |
1564 | gdb_printf (stream, "%o", digit); | |
1565 | if (digit != 0) | |
1566 | *seen_a_one = true; | |
1567 | } | |
1568 | ||
1569 | /* VALADDR points to an integer of LEN bytes. | |
1570 | Print it in octal on stream or format it in buf. */ | |
1571 | ||
1572 | void | |
1573 | print_octal_chars (struct ui_file *stream, const gdb_byte *valaddr, | |
1574 | unsigned len, enum bfd_endian byte_order) | |
1575 | { | |
1576 | const gdb_byte *p; | |
1577 | unsigned char octa1, octa2, octa3, carry; | |
1578 | int cycle; | |
1579 | ||
1580 | /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track | |
1581 | * the extra bits, which cycle every three bytes: | |
1582 | * | |
1583 | * Byte side: 0 1 2 3 | |
1584 | * | | | | | |
1585 | * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 | | |
1586 | * | |
1587 | * Octal side: 0 1 carry 3 4 carry ... | |
1588 | * | |
1589 | * Cycle number: 0 1 2 | |
1590 | * | |
1591 | * But of course we are printing from the high side, so we have to | |
1592 | * figure out where in the cycle we are so that we end up with no | |
1593 | * left over bits at the end. | |
1594 | */ | |
1595 | #define BITS_IN_OCTAL 3 | |
1596 | #define HIGH_ZERO 0340 | |
1597 | #define LOW_ZERO 0034 | |
1598 | #define CARRY_ZERO 0003 | |
1599 | static_assert (HIGH_ZERO + LOW_ZERO + CARRY_ZERO == 0xff, | |
1600 | "cycle zero constants are wrong"); | |
1601 | #define HIGH_ONE 0200 | |
1602 | #define MID_ONE 0160 | |
1603 | #define LOW_ONE 0016 | |
1604 | #define CARRY_ONE 0001 | |
1605 | static_assert (HIGH_ONE + MID_ONE + LOW_ONE + CARRY_ONE == 0xff, | |
1606 | "cycle one constants are wrong"); | |
1607 | #define HIGH_TWO 0300 | |
1608 | #define MID_TWO 0070 | |
1609 | #define LOW_TWO 0007 | |
1610 | static_assert (HIGH_TWO + MID_TWO + LOW_TWO == 0xff, | |
1611 | "cycle two constants are wrong"); | |
1612 | ||
1613 | /* For 32 we start in cycle 2, with two bits and one bit carry; | |
1614 | for 64 in cycle in cycle 1, with one bit and a two bit carry. */ | |
1615 | ||
1616 | cycle = (len * HOST_CHAR_BIT) % BITS_IN_OCTAL; | |
1617 | carry = 0; | |
1618 | ||
1619 | gdb_puts ("0", stream); | |
1620 | bool seen_a_one = false; | |
1621 | if (byte_order == BFD_ENDIAN_BIG) | |
1622 | { | |
1623 | for (p = valaddr; | |
1624 | p < valaddr + len; | |
1625 | p++) | |
1626 | { | |
1627 | switch (cycle) | |
1628 | { | |
1629 | case 0: | |
1630 | /* No carry in, carry out two bits. */ | |
1631 | ||
1632 | octa1 = (HIGH_ZERO & *p) >> 5; | |
1633 | octa2 = (LOW_ZERO & *p) >> 2; | |
1634 | carry = (CARRY_ZERO & *p); | |
1635 | emit_octal_digit (stream, &seen_a_one, octa1); | |
1636 | emit_octal_digit (stream, &seen_a_one, octa2); | |
1637 | break; | |
1638 | ||
1639 | case 1: | |
1640 | /* Carry in two bits, carry out one bit. */ | |
1641 | ||
1642 | octa1 = (carry << 1) | ((HIGH_ONE & *p) >> 7); | |
1643 | octa2 = (MID_ONE & *p) >> 4; | |
1644 | octa3 = (LOW_ONE & *p) >> 1; | |
1645 | carry = (CARRY_ONE & *p); | |
1646 | emit_octal_digit (stream, &seen_a_one, octa1); | |
1647 | emit_octal_digit (stream, &seen_a_one, octa2); | |
1648 | emit_octal_digit (stream, &seen_a_one, octa3); | |
1649 | break; | |
1650 | ||
1651 | case 2: | |
1652 | /* Carry in one bit, no carry out. */ | |
1653 | ||
1654 | octa1 = (carry << 2) | ((HIGH_TWO & *p) >> 6); | |
1655 | octa2 = (MID_TWO & *p) >> 3; | |
1656 | octa3 = (LOW_TWO & *p); | |
1657 | carry = 0; | |
1658 | emit_octal_digit (stream, &seen_a_one, octa1); | |
1659 | emit_octal_digit (stream, &seen_a_one, octa2); | |
1660 | emit_octal_digit (stream, &seen_a_one, octa3); | |
1661 | break; | |
1662 | ||
1663 | default: | |
1664 | error (_("Internal error in octal conversion;")); | |
1665 | } | |
1666 | ||
1667 | cycle++; | |
1668 | cycle = cycle % BITS_IN_OCTAL; | |
1669 | } | |
1670 | } | |
1671 | else | |
1672 | { | |
1673 | for (p = valaddr + len - 1; | |
1674 | p >= valaddr; | |
1675 | p--) | |
1676 | { | |
1677 | switch (cycle) | |
1678 | { | |
1679 | case 0: | |
1680 | /* Carry out, no carry in */ | |
1681 | ||
1682 | octa1 = (HIGH_ZERO & *p) >> 5; | |
1683 | octa2 = (LOW_ZERO & *p) >> 2; | |
1684 | carry = (CARRY_ZERO & *p); | |
1685 | emit_octal_digit (stream, &seen_a_one, octa1); | |
1686 | emit_octal_digit (stream, &seen_a_one, octa2); | |
1687 | break; | |
1688 | ||
1689 | case 1: | |
1690 | /* Carry in, carry out */ | |
1691 | ||
1692 | octa1 = (carry << 1) | ((HIGH_ONE & *p) >> 7); | |
1693 | octa2 = (MID_ONE & *p) >> 4; | |
1694 | octa3 = (LOW_ONE & *p) >> 1; | |
1695 | carry = (CARRY_ONE & *p); | |
1696 | emit_octal_digit (stream, &seen_a_one, octa1); | |
1697 | emit_octal_digit (stream, &seen_a_one, octa2); | |
1698 | emit_octal_digit (stream, &seen_a_one, octa3); | |
1699 | break; | |
1700 | ||
1701 | case 2: | |
1702 | /* Carry in, no carry out */ | |
1703 | ||
1704 | octa1 = (carry << 2) | ((HIGH_TWO & *p) >> 6); | |
1705 | octa2 = (MID_TWO & *p) >> 3; | |
1706 | octa3 = (LOW_TWO & *p); | |
1707 | carry = 0; | |
1708 | emit_octal_digit (stream, &seen_a_one, octa1); | |
1709 | emit_octal_digit (stream, &seen_a_one, octa2); | |
1710 | emit_octal_digit (stream, &seen_a_one, octa3); | |
1711 | break; | |
1712 | ||
1713 | default: | |
1714 | error (_("Internal error in octal conversion;")); | |
1715 | } | |
1716 | ||
1717 | cycle++; | |
1718 | cycle = cycle % BITS_IN_OCTAL; | |
1719 | } | |
1720 | } | |
1721 | ||
1722 | } | |
1723 | ||
1724 | /* Possibly negate the integer represented by BYTES. It contains LEN | |
1725 | bytes in the specified byte order. If the integer is negative, | |
1726 | copy it into OUT_VEC, negate it, and return true. Otherwise, do | |
1727 | nothing and return false. */ | |
1728 | ||
1729 | static bool | |
1730 | maybe_negate_by_bytes (const gdb_byte *bytes, unsigned len, | |
1731 | enum bfd_endian byte_order, | |
1732 | gdb::byte_vector *out_vec) | |
1733 | { | |
1734 | gdb_byte sign_byte; | |
1735 | gdb_assert (len > 0); | |
1736 | if (byte_order == BFD_ENDIAN_BIG) | |
1737 | sign_byte = bytes[0]; | |
1738 | else | |
1739 | sign_byte = bytes[len - 1]; | |
1740 | if ((sign_byte & 0x80) == 0) | |
1741 | return false; | |
1742 | ||
1743 | out_vec->resize (len); | |
1744 | ||
1745 | /* Compute -x == 1 + ~x. */ | |
1746 | if (byte_order == BFD_ENDIAN_LITTLE) | |
1747 | { | |
1748 | unsigned carry = 1; | |
1749 | for (unsigned i = 0; i < len; ++i) | |
1750 | { | |
1751 | unsigned tem = (0xff & ~bytes[i]) + carry; | |
1752 | (*out_vec)[i] = tem & 0xff; | |
1753 | carry = tem / 256; | |
1754 | } | |
1755 | } | |
1756 | else | |
1757 | { | |
1758 | unsigned carry = 1; | |
1759 | for (unsigned i = len; i > 0; --i) | |
1760 | { | |
1761 | unsigned tem = (0xff & ~bytes[i - 1]) + carry; | |
1762 | (*out_vec)[i - 1] = tem & 0xff; | |
1763 | carry = tem / 256; | |
1764 | } | |
1765 | } | |
1766 | ||
1767 | return true; | |
1768 | } | |
1769 | ||
1770 | /* VALADDR points to an integer of LEN bytes. | |
1771 | Print it in decimal on stream or format it in buf. */ | |
1772 | ||
1773 | void | |
1774 | print_decimal_chars (struct ui_file *stream, const gdb_byte *valaddr, | |
1775 | unsigned len, bool is_signed, | |
1776 | enum bfd_endian byte_order) | |
1777 | { | |
1778 | #define TEN 10 | |
1779 | #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */ | |
1780 | #define CARRY_LEFT( x ) ((x) % TEN) | |
1781 | #define SHIFT( x ) ((x) << 4) | |
1782 | #define LOW_NIBBLE( x ) ( (x) & 0x00F) | |
1783 | #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4) | |
1784 | ||
1785 | const gdb_byte *p; | |
1786 | int carry; | |
1787 | int decimal_len; | |
1788 | int i, j, decimal_digits; | |
1789 | int dummy; | |
1790 | int flip; | |
1791 | ||
1792 | gdb::byte_vector negated_bytes; | |
1793 | if (is_signed | |
1794 | && maybe_negate_by_bytes (valaddr, len, byte_order, &negated_bytes)) | |
1795 | { | |
1796 | gdb_puts ("-", stream); | |
1797 | valaddr = negated_bytes.data (); | |
1798 | } | |
1799 | ||
1800 | /* Base-ten number is less than twice as many digits | |
1801 | as the base 16 number, which is 2 digits per byte. */ | |
1802 | ||
1803 | decimal_len = len * 2 * 2; | |
1804 | std::vector<unsigned char> digits (decimal_len, 0); | |
1805 | ||
1806 | /* Ok, we have an unknown number of bytes of data to be printed in | |
1807 | * decimal. | |
1808 | * | |
1809 | * Given a hex number (in nibbles) as XYZ, we start by taking X and | |
1810 | * decimalizing it as "x1 x2" in two decimal nibbles. Then we multiply | |
1811 | * the nibbles by 16, add Y and re-decimalize. Repeat with Z. | |
1812 | * | |
1813 | * The trick is that "digits" holds a base-10 number, but sometimes | |
1814 | * the individual digits are > 10. | |
1815 | * | |
1816 | * Outer loop is per nibble (hex digit) of input, from MSD end to | |
1817 | * LSD end. | |
1818 | */ | |
1819 | decimal_digits = 0; /* Number of decimal digits so far */ | |
1820 | p = (byte_order == BFD_ENDIAN_BIG) ? valaddr : valaddr + len - 1; | |
1821 | flip = 0; | |
1822 | while ((byte_order == BFD_ENDIAN_BIG) ? (p < valaddr + len) : (p >= valaddr)) | |
1823 | { | |
1824 | /* | |
1825 | * Multiply current base-ten number by 16 in place. | |
1826 | * Each digit was between 0 and 9, now is between | |
1827 | * 0 and 144. | |
1828 | */ | |
1829 | for (j = 0; j < decimal_digits; j++) | |
1830 | { | |
1831 | digits[j] = SHIFT (digits[j]); | |
1832 | } | |
1833 | ||
1834 | /* Take the next nibble off the input and add it to what | |
1835 | * we've got in the LSB position. Bottom 'digit' is now | |
1836 | * between 0 and 159. | |
1837 | * | |
1838 | * "flip" is used to run this loop twice for each byte. | |
1839 | */ | |
1840 | if (flip == 0) | |
1841 | { | |
1842 | /* Take top nibble. */ | |
1843 | ||
1844 | digits[0] += HIGH_NIBBLE (*p); | |
1845 | flip = 1; | |
1846 | } | |
1847 | else | |
1848 | { | |
1849 | /* Take low nibble and bump our pointer "p". */ | |
1850 | ||
1851 | digits[0] += LOW_NIBBLE (*p); | |
1852 | if (byte_order == BFD_ENDIAN_BIG) | |
1853 | p++; | |
1854 | else | |
1855 | p--; | |
1856 | flip = 0; | |
1857 | } | |
1858 | ||
1859 | /* Re-decimalize. We have to do this often enough | |
1860 | * that we don't overflow, but once per nibble is | |
1861 | * overkill. Easier this way, though. Note that the | |
1862 | * carry is often larger than 10 (e.g. max initial | |
1863 | * carry out of lowest nibble is 15, could bubble all | |
1864 | * the way up greater than 10). So we have to do | |
1865 | * the carrying beyond the last current digit. | |
1866 | */ | |
1867 | carry = 0; | |
1868 | for (j = 0; j < decimal_len - 1; j++) | |
1869 | { | |
1870 | digits[j] += carry; | |
1871 | ||
1872 | /* "/" won't handle an unsigned char with | |
1873 | * a value that if signed would be negative. | |
1874 | * So extend to longword int via "dummy". | |
1875 | */ | |
1876 | dummy = digits[j]; | |
1877 | carry = CARRY_OUT (dummy); | |
1878 | digits[j] = CARRY_LEFT (dummy); | |
1879 | ||
1880 | if (j >= decimal_digits && carry == 0) | |
1881 | { | |
1882 | /* | |
1883 | * All higher digits are 0 and we | |
1884 | * no longer have a carry. | |
1885 | * | |
1886 | * Note: "j" is 0-based, "decimal_digits" is | |
1887 | * 1-based. | |
1888 | */ | |
1889 | decimal_digits = j + 1; | |
1890 | break; | |
1891 | } | |
1892 | } | |
1893 | } | |
1894 | ||
1895 | /* Ok, now "digits" is the decimal representation, with | |
1896 | the "decimal_digits" actual digits. Print! */ | |
1897 | ||
1898 | for (i = decimal_digits - 1; i > 0 && digits[i] == 0; --i) | |
1899 | ; | |
1900 | ||
1901 | for (; i >= 0; i--) | |
1902 | { | |
1903 | gdb_printf (stream, "%1d", digits[i]); | |
1904 | } | |
1905 | } | |
1906 | ||
1907 | /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */ | |
1908 | ||
1909 | void | |
1910 | print_hex_chars (struct ui_file *stream, const gdb_byte *valaddr, | |
1911 | unsigned len, enum bfd_endian byte_order, | |
1912 | bool zero_pad) | |
1913 | { | |
1914 | const gdb_byte *p; | |
1915 | ||
1916 | gdb_puts ("0x", stream); | |
1917 | if (byte_order == BFD_ENDIAN_BIG) | |
1918 | { | |
1919 | p = valaddr; | |
1920 | ||
1921 | if (!zero_pad) | |
1922 | { | |
1923 | /* Strip leading 0 bytes, but be sure to leave at least a | |
1924 | single byte at the end. */ | |
1925 | for (; p < valaddr + len - 1 && !*p; ++p) | |
1926 | ; | |
1927 | } | |
1928 | ||
1929 | const gdb_byte *first = p; | |
1930 | for (; | |
1931 | p < valaddr + len; | |
1932 | p++) | |
1933 | { | |
1934 | /* When not zero-padding, use a different format for the | |
1935 | very first byte printed. */ | |
1936 | if (!zero_pad && p == first) | |
1937 | gdb_printf (stream, "%x", *p); | |
1938 | else | |
1939 | gdb_printf (stream, "%02x", *p); | |
1940 | } | |
1941 | } | |
1942 | else | |
1943 | { | |
1944 | p = valaddr + len - 1; | |
1945 | ||
1946 | if (!zero_pad) | |
1947 | { | |
1948 | /* Strip leading 0 bytes, but be sure to leave at least a | |
1949 | single byte at the end. */ | |
1950 | for (; p >= valaddr + 1 && !*p; --p) | |
1951 | ; | |
1952 | } | |
1953 | ||
1954 | const gdb_byte *first = p; | |
1955 | for (; | |
1956 | p >= valaddr; | |
1957 | p--) | |
1958 | { | |
1959 | /* When not zero-padding, use a different format for the | |
1960 | very first byte printed. */ | |
1961 | if (!zero_pad && p == first) | |
1962 | gdb_printf (stream, "%x", *p); | |
1963 | else | |
1964 | gdb_printf (stream, "%02x", *p); | |
1965 | } | |
1966 | } | |
1967 | } | |
1968 | ||
1969 | /* Print function pointer with inferior address ADDRESS onto stdio | |
1970 | stream STREAM. */ | |
1971 | ||
1972 | void | |
1973 | print_function_pointer_address (const struct value_print_options *options, | |
1974 | struct gdbarch *gdbarch, | |
1975 | CORE_ADDR address, | |
1976 | struct ui_file *stream) | |
1977 | { | |
1978 | CORE_ADDR func_addr = gdbarch_convert_from_func_ptr_addr | |
1979 | (gdbarch, address, current_inferior ()->top_target ()); | |
1980 | ||
1981 | /* If the function pointer is represented by a description, print | |
1982 | the address of the description. */ | |
1983 | if (options->addressprint && func_addr != address) | |
1984 | { | |
1985 | gdb_puts ("@", stream); | |
1986 | gdb_puts (paddress (gdbarch, address), stream); | |
1987 | gdb_puts (": ", stream); | |
1988 | } | |
1989 | print_address_demangle (options, gdbarch, func_addr, stream, demangle); | |
1990 | } | |
1991 | ||
1992 | ||
1993 | /* Print on STREAM using the given OPTIONS the index for the element | |
1994 | at INDEX of an array whose index type is INDEX_TYPE. */ | |
1995 | ||
1996 | void | |
1997 | maybe_print_array_index (struct type *index_type, LONGEST index, | |
1998 | struct ui_file *stream, | |
1999 | const struct value_print_options *options) | |
2000 | { | |
2001 | if (!options->print_array_indexes) | |
2002 | return; | |
2003 | ||
2004 | current_language->print_array_index (index_type, index, stream, options); | |
2005 | } | |
2006 | ||
2007 | /* See valprint.h. */ | |
2008 | ||
2009 | void | |
2010 | value_print_array_elements (struct value *val, struct ui_file *stream, | |
2011 | int recurse, | |
2012 | const struct value_print_options *options, | |
2013 | unsigned int i) | |
2014 | { | |
2015 | unsigned int things_printed = 0; | |
2016 | unsigned len; | |
2017 | struct type *elttype, *index_type; | |
2018 | /* Position of the array element we are examining to see | |
2019 | whether it is repeated. */ | |
2020 | unsigned int rep1; | |
2021 | /* Number of repetitions we have detected so far. */ | |
2022 | unsigned int reps; | |
2023 | LONGEST low_bound, high_bound; | |
2024 | ||
2025 | struct type *type = check_typedef (val->type ()); | |
2026 | ||
2027 | elttype = type->target_type (); | |
2028 | unsigned bit_stride = type->bit_stride (); | |
2029 | if (bit_stride == 0) | |
2030 | bit_stride = 8 * check_typedef (elttype)->length (); | |
2031 | index_type = type->index_type (); | |
2032 | if (index_type->code () == TYPE_CODE_RANGE) | |
2033 | index_type = index_type->target_type (); | |
2034 | ||
2035 | if (get_array_bounds (type, &low_bound, &high_bound)) | |
2036 | { | |
2037 | /* The array length should normally be HIGH_BOUND - LOW_BOUND + | |
2038 | 1. But we have to be a little extra careful, because some | |
2039 | languages such as Ada allow LOW_BOUND to be greater than | |
2040 | HIGH_BOUND for empty arrays. In that situation, the array | |
2041 | length is just zero, not negative! */ | |
2042 | if (low_bound > high_bound) | |
2043 | len = 0; | |
2044 | else | |
2045 | len = high_bound - low_bound + 1; | |
2046 | } | |
2047 | else | |
2048 | { | |
2049 | warning (_("unable to get bounds of array, assuming null array")); | |
2050 | low_bound = 0; | |
2051 | len = 0; | |
2052 | } | |
2053 | ||
2054 | annotate_array_section_begin (i, elttype); | |
2055 | ||
2056 | for (; i < len && things_printed < options->print_max; i++) | |
2057 | { | |
2058 | scoped_value_mark free_values; | |
2059 | ||
2060 | if (i != 0) | |
2061 | { | |
2062 | if (options->prettyformat_arrays) | |
2063 | { | |
2064 | gdb_printf (stream, ",\n"); | |
2065 | print_spaces (2 + 2 * recurse, stream); | |
2066 | } | |
2067 | else | |
2068 | gdb_printf (stream, ", "); | |
2069 | } | |
2070 | else if (options->prettyformat_arrays) | |
2071 | { | |
2072 | gdb_printf (stream, "\n"); | |
2073 | print_spaces (2 + 2 * recurse, stream); | |
2074 | } | |
2075 | stream->wrap_here (2 + 2 * recurse); | |
2076 | maybe_print_array_index (index_type, i + low_bound, | |
2077 | stream, options); | |
2078 | ||
2079 | struct value *element = val->from_component_bitsize (elttype, | |
2080 | bit_stride * i, | |
2081 | bit_stride); | |
2082 | rep1 = i + 1; | |
2083 | reps = 1; | |
2084 | /* Only check for reps if repeat_count_threshold is not set to | |
2085 | UINT_MAX (unlimited). */ | |
2086 | if (options->repeat_count_threshold < UINT_MAX) | |
2087 | { | |
2088 | bool unavailable = element->entirely_unavailable (); | |
2089 | bool available = element->entirely_available (); | |
2090 | ||
2091 | while (rep1 < len) | |
2092 | { | |
2093 | /* When printing large arrays this spot is called frequently, so | |
2094 | clean up temporary values asap to prevent allocating a large | |
2095 | amount of them. */ | |
2096 | scoped_value_mark free_values_inner; | |
2097 | struct value *rep_elt | |
2098 | = val->from_component_bitsize (elttype, | |
2099 | rep1 * bit_stride, | |
2100 | bit_stride); | |
2101 | bool repeated = ((available | |
2102 | && rep_elt->entirely_available () | |
2103 | && element->contents_eq (rep_elt)) | |
2104 | || (unavailable | |
2105 | && rep_elt->entirely_unavailable ())); | |
2106 | if (!repeated) | |
2107 | break; | |
2108 | ++reps; | |
2109 | ++rep1; | |
2110 | } | |
2111 | } | |
2112 | ||
2113 | common_val_print (element, stream, recurse + 1, options, | |
2114 | current_language); | |
2115 | ||
2116 | if (reps > options->repeat_count_threshold) | |
2117 | { | |
2118 | annotate_elt_rep (reps); | |
2119 | gdb_printf (stream, " %p[<repeats %u times>%p]", | |
2120 | metadata_style.style ().ptr (), reps, nullptr); | |
2121 | annotate_elt_rep_end (); | |
2122 | ||
2123 | i = rep1 - 1; | |
2124 | things_printed += options->repeat_count_threshold; | |
2125 | } | |
2126 | else | |
2127 | { | |
2128 | annotate_elt (); | |
2129 | things_printed++; | |
2130 | } | |
2131 | } | |
2132 | annotate_array_section_end (); | |
2133 | if (i < len) | |
2134 | gdb_printf (stream, "..."); | |
2135 | if (options->prettyformat_arrays) | |
2136 | { | |
2137 | gdb_printf (stream, "\n"); | |
2138 | print_spaces (2 * recurse, stream); | |
2139 | } | |
2140 | } | |
2141 | ||
2142 | /* Return true if print_wchar can display W without resorting to a | |
2143 | numeric escape, false otherwise. */ | |
2144 | ||
2145 | static int | |
2146 | wchar_printable (gdb_wchar_t w) | |
2147 | { | |
2148 | return (gdb_iswprint (w) | |
2149 | || w == LCST ('\a') || w == LCST ('\b') | |
2150 | || w == LCST ('\f') || w == LCST ('\n') | |
2151 | || w == LCST ('\r') || w == LCST ('\t') | |
2152 | || w == LCST ('\v')); | |
2153 | } | |
2154 | ||
2155 | /* A helper function that converts the contents of STRING to wide | |
2156 | characters and then appends them to OUTPUT. */ | |
2157 | ||
2158 | static void | |
2159 | append_string_as_wide (const char *string, | |
2160 | struct obstack *output) | |
2161 | { | |
2162 | for (; *string; ++string) | |
2163 | { | |
2164 | gdb_wchar_t w = gdb_btowc (*string); | |
2165 | obstack_grow (output, &w, sizeof (gdb_wchar_t)); | |
2166 | } | |
2167 | } | |
2168 | ||
2169 | /* Print a wide character W to OUTPUT. ORIG is a pointer to the | |
2170 | original (target) bytes representing the character, ORIG_LEN is the | |
2171 | number of valid bytes. WIDTH is the number of bytes in a base | |
2172 | characters of the type. OUTPUT is an obstack to which wide | |
2173 | characters are emitted. QUOTER is a (narrow) character indicating | |
2174 | the style of quotes surrounding the character to be printed. | |
2175 | NEED_ESCAPE is an in/out flag which is used to track numeric | |
2176 | escapes across calls. */ | |
2177 | ||
2178 | static void | |
2179 | print_wchar (gdb_wint_t w, const gdb_byte *orig, | |
2180 | int orig_len, int width, | |
2181 | enum bfd_endian byte_order, | |
2182 | struct obstack *output, | |
2183 | int quoter, bool *need_escapep) | |
2184 | { | |
2185 | bool need_escape = *need_escapep; | |
2186 | ||
2187 | *need_escapep = false; | |
2188 | ||
2189 | /* If any additional cases are added to this switch block, then the | |
2190 | function wchar_printable will likely need updating too. */ | |
2191 | switch (w) | |
2192 | { | |
2193 | case LCST ('\a'): | |
2194 | obstack_grow_wstr (output, LCST ("\\a")); | |
2195 | break; | |
2196 | case LCST ('\b'): | |
2197 | obstack_grow_wstr (output, LCST ("\\b")); | |
2198 | break; | |
2199 | case LCST ('\f'): | |
2200 | obstack_grow_wstr (output, LCST ("\\f")); | |
2201 | break; | |
2202 | case LCST ('\n'): | |
2203 | obstack_grow_wstr (output, LCST ("\\n")); | |
2204 | break; | |
2205 | case LCST ('\r'): | |
2206 | obstack_grow_wstr (output, LCST ("\\r")); | |
2207 | break; | |
2208 | case LCST ('\t'): | |
2209 | obstack_grow_wstr (output, LCST ("\\t")); | |
2210 | break; | |
2211 | case LCST ('\v'): | |
2212 | obstack_grow_wstr (output, LCST ("\\v")); | |
2213 | break; | |
2214 | default: | |
2215 | { | |
2216 | if (gdb_iswprint (w) && !(need_escape && gdb_iswxdigit (w))) | |
2217 | { | |
2218 | gdb_wchar_t wchar = w; | |
2219 | ||
2220 | if (w == gdb_btowc (quoter) || w == LCST ('\\')) | |
2221 | obstack_grow_wstr (output, LCST ("\\")); | |
2222 | obstack_grow (output, &wchar, sizeof (gdb_wchar_t)); | |
2223 | } | |
2224 | else | |
2225 | { | |
2226 | int i; | |
2227 | ||
2228 | for (i = 0; i + width <= orig_len; i += width) | |
2229 | { | |
2230 | char octal[30]; | |
2231 | ULONGEST value; | |
2232 | ||
2233 | value = extract_unsigned_integer (&orig[i], width, | |
2234 | byte_order); | |
2235 | /* If the value fits in 3 octal digits, print it that | |
2236 | way. Otherwise, print it as a hex escape. */ | |
2237 | if (value <= 0777) | |
2238 | { | |
2239 | xsnprintf (octal, sizeof (octal), "\\%.3o", | |
2240 | (int) (value & 0777)); | |
2241 | *need_escapep = false; | |
2242 | } | |
2243 | else | |
2244 | { | |
2245 | xsnprintf (octal, sizeof (octal), "\\x%lx", (long) value); | |
2246 | /* A hex escape might require the next character | |
2247 | to be escaped, because, unlike with octal, | |
2248 | hex escapes have no length limit. */ | |
2249 | *need_escapep = true; | |
2250 | } | |
2251 | append_string_as_wide (octal, output); | |
2252 | } | |
2253 | /* If we somehow have extra bytes, print them now. */ | |
2254 | while (i < orig_len) | |
2255 | { | |
2256 | char octal[5]; | |
2257 | ||
2258 | xsnprintf (octal, sizeof (octal), "\\%.3o", orig[i] & 0xff); | |
2259 | *need_escapep = false; | |
2260 | append_string_as_wide (octal, output); | |
2261 | ++i; | |
2262 | } | |
2263 | } | |
2264 | break; | |
2265 | } | |
2266 | } | |
2267 | } | |
2268 | ||
2269 | /* Print the character C on STREAM as part of the contents of a | |
2270 | literal string whose delimiter is QUOTER. ENCODING names the | |
2271 | encoding of C. */ | |
2272 | ||
2273 | void | |
2274 | generic_emit_char (int c, struct type *type, struct ui_file *stream, | |
2275 | int quoter, const char *encoding) | |
2276 | { | |
2277 | enum bfd_endian byte_order | |
2278 | = type_byte_order (type); | |
2279 | gdb_byte *c_buf; | |
2280 | bool need_escape = false; | |
2281 | ||
2282 | c_buf = (gdb_byte *) alloca (type->length ()); | |
2283 | pack_long (c_buf, type, c); | |
2284 | ||
2285 | wchar_iterator iter (c_buf, type->length (), encoding, type->length ()); | |
2286 | ||
2287 | /* This holds the printable form of the wchar_t data. */ | |
2288 | auto_obstack wchar_buf; | |
2289 | ||
2290 | while (1) | |
2291 | { | |
2292 | int num_chars; | |
2293 | gdb_wchar_t *chars; | |
2294 | const gdb_byte *buf; | |
2295 | size_t buflen; | |
2296 | int print_escape = 1; | |
2297 | enum wchar_iterate_result result; | |
2298 | ||
2299 | num_chars = iter.iterate (&result, &chars, &buf, &buflen); | |
2300 | if (num_chars < 0) | |
2301 | break; | |
2302 | if (num_chars > 0) | |
2303 | { | |
2304 | /* If all characters are printable, print them. Otherwise, | |
2305 | we're going to have to print an escape sequence. We | |
2306 | check all characters because we want to print the target | |
2307 | bytes in the escape sequence, and we don't know character | |
2308 | boundaries there. */ | |
2309 | int i; | |
2310 | ||
2311 | print_escape = 0; | |
2312 | for (i = 0; i < num_chars; ++i) | |
2313 | if (!wchar_printable (chars[i])) | |
2314 | { | |
2315 | print_escape = 1; | |
2316 | break; | |
2317 | } | |
2318 | ||
2319 | if (!print_escape) | |
2320 | { | |
2321 | for (i = 0; i < num_chars; ++i) | |
2322 | print_wchar (chars[i], buf, buflen, | |
2323 | type->length (), byte_order, | |
2324 | &wchar_buf, quoter, &need_escape); | |
2325 | } | |
2326 | } | |
2327 | ||
2328 | /* This handles the NUM_CHARS == 0 case as well. */ | |
2329 | if (print_escape) | |
2330 | print_wchar (gdb_WEOF, buf, buflen, type->length (), | |
2331 | byte_order, &wchar_buf, quoter, &need_escape); | |
2332 | } | |
2333 | ||
2334 | /* The output in the host encoding. */ | |
2335 | auto_obstack output; | |
2336 | ||
2337 | convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (), | |
2338 | (gdb_byte *) obstack_base (&wchar_buf), | |
2339 | obstack_object_size (&wchar_buf), | |
2340 | sizeof (gdb_wchar_t), &output, translit_char); | |
2341 | obstack_1grow (&output, '\0'); | |
2342 | ||
2343 | gdb_puts ((const char *) obstack_base (&output), stream); | |
2344 | } | |
2345 | ||
2346 | /* Return the repeat count of the next character/byte in ITER, | |
2347 | storing the result in VEC. */ | |
2348 | ||
2349 | static int | |
2350 | count_next_character (wchar_iterator *iter, | |
2351 | std::vector<converted_character> *vec) | |
2352 | { | |
2353 | struct converted_character *current; | |
2354 | ||
2355 | if (vec->empty ()) | |
2356 | { | |
2357 | struct converted_character tmp; | |
2358 | gdb_wchar_t *chars; | |
2359 | ||
2360 | tmp.num_chars | |
2361 | = iter->iterate (&tmp.result, &chars, &tmp.buf, &tmp.buflen); | |
2362 | if (tmp.num_chars > 0) | |
2363 | { | |
2364 | gdb_assert (tmp.num_chars < MAX_WCHARS); | |
2365 | memcpy (tmp.chars, chars, tmp.num_chars * sizeof (gdb_wchar_t)); | |
2366 | } | |
2367 | vec->push_back (tmp); | |
2368 | } | |
2369 | ||
2370 | current = &vec->back (); | |
2371 | ||
2372 | /* Count repeated characters or bytes. */ | |
2373 | current->repeat_count = 1; | |
2374 | if (current->num_chars == -1) | |
2375 | { | |
2376 | /* EOF */ | |
2377 | return -1; | |
2378 | } | |
2379 | else | |
2380 | { | |
2381 | gdb_wchar_t *chars; | |
2382 | struct converted_character d; | |
2383 | int repeat; | |
2384 | ||
2385 | d.repeat_count = 0; | |
2386 | ||
2387 | while (1) | |
2388 | { | |
2389 | /* Get the next character. */ | |
2390 | d.num_chars = iter->iterate (&d.result, &chars, &d.buf, &d.buflen); | |
2391 | ||
2392 | /* If a character was successfully converted, save the character | |
2393 | into the converted character. */ | |
2394 | if (d.num_chars > 0) | |
2395 | { | |
2396 | gdb_assert (d.num_chars < MAX_WCHARS); | |
2397 | memcpy (d.chars, chars, WCHAR_BUFLEN (d.num_chars)); | |
2398 | } | |
2399 | ||
2400 | /* Determine if the current character is the same as this | |
2401 | new character. */ | |
2402 | if (d.num_chars == current->num_chars && d.result == current->result) | |
2403 | { | |
2404 | /* There are two cases to consider: | |
2405 | ||
2406 | 1) Equality of converted character (num_chars > 0) | |
2407 | 2) Equality of non-converted character (num_chars == 0) */ | |
2408 | if ((current->num_chars > 0 | |
2409 | && memcmp (current->chars, d.chars, | |
2410 | WCHAR_BUFLEN (current->num_chars)) == 0) | |
2411 | || (current->num_chars == 0 | |
2412 | && current->buflen == d.buflen | |
2413 | && memcmp (current->buf, d.buf, current->buflen) == 0)) | |
2414 | ++current->repeat_count; | |
2415 | else | |
2416 | break; | |
2417 | } | |
2418 | else | |
2419 | break; | |
2420 | } | |
2421 | ||
2422 | /* Push this next converted character onto the result vector. */ | |
2423 | repeat = current->repeat_count; | |
2424 | vec->push_back (d); | |
2425 | return repeat; | |
2426 | } | |
2427 | } | |
2428 | ||
2429 | /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote | |
2430 | character to use with string output. WIDTH is the size of the output | |
2431 | character type. BYTE_ORDER is the target byte order. OPTIONS | |
2432 | is the user's print options. *FINISHED is set to 0 if we didn't print | |
2433 | all the elements in CHARS. */ | |
2434 | ||
2435 | static void | |
2436 | print_converted_chars_to_obstack (struct obstack *obstack, | |
2437 | const std::vector<converted_character> &chars, | |
2438 | int quote_char, int width, | |
2439 | enum bfd_endian byte_order, | |
2440 | const struct value_print_options *options, | |
2441 | int *finished) | |
2442 | { | |
2443 | unsigned int idx, num_elements; | |
2444 | const converted_character *elem; | |
2445 | enum {START, SINGLE, REPEAT, INCOMPLETE, FINISH} state, last; | |
2446 | gdb_wchar_t wide_quote_char = gdb_btowc (quote_char); | |
2447 | bool need_escape = false; | |
2448 | const int print_max = options->print_max_chars > 0 | |
2449 | ? options->print_max_chars : options->print_max; | |
2450 | ||
2451 | /* Set the start state. */ | |
2452 | idx = num_elements = 0; | |
2453 | last = state = START; | |
2454 | elem = NULL; | |
2455 | ||
2456 | while (1) | |
2457 | { | |
2458 | switch (state) | |
2459 | { | |
2460 | case START: | |
2461 | /* Nothing to do. */ | |
2462 | break; | |
2463 | ||
2464 | case SINGLE: | |
2465 | { | |
2466 | int j; | |
2467 | ||
2468 | /* We are outputting a single character | |
2469 | (< options->repeat_count_threshold). */ | |
2470 | ||
2471 | if (last != SINGLE) | |
2472 | { | |
2473 | /* We were outputting some other type of content, so we | |
2474 | must output and a comma and a quote. */ | |
2475 | if (last != START) | |
2476 | obstack_grow_wstr (obstack, LCST (", ")); | |
2477 | obstack_grow (obstack, &wide_quote_char, sizeof (gdb_wchar_t)); | |
2478 | } | |
2479 | /* Output the character. */ | |
2480 | int repeat_count = elem->repeat_count; | |
2481 | if (print_max < repeat_count + num_elements) | |
2482 | { | |
2483 | repeat_count = print_max - num_elements; | |
2484 | *finished = 0; | |
2485 | } | |
2486 | for (j = 0; j < repeat_count; ++j) | |
2487 | { | |
2488 | if (elem->result == wchar_iterate_ok) | |
2489 | print_wchar (elem->chars[0], elem->buf, elem->buflen, width, | |
2490 | byte_order, obstack, quote_char, &need_escape); | |
2491 | else | |
2492 | print_wchar (gdb_WEOF, elem->buf, elem->buflen, width, | |
2493 | byte_order, obstack, quote_char, &need_escape); | |
2494 | num_elements += 1; | |
2495 | } | |
2496 | } | |
2497 | break; | |
2498 | ||
2499 | case REPEAT: | |
2500 | { | |
2501 | int j; | |
2502 | ||
2503 | /* We are outputting a character with a repeat count | |
2504 | greater than options->repeat_count_threshold. */ | |
2505 | ||
2506 | if (last == SINGLE) | |
2507 | { | |
2508 | /* We were outputting a single string. Terminate the | |
2509 | string. */ | |
2510 | obstack_grow (obstack, &wide_quote_char, sizeof (gdb_wchar_t)); | |
2511 | } | |
2512 | if (last != START) | |
2513 | obstack_grow_wstr (obstack, LCST (", ")); | |
2514 | ||
2515 | /* Output the character and repeat string. */ | |
2516 | obstack_grow_wstr (obstack, LCST ("'")); | |
2517 | if (elem->result == wchar_iterate_ok) | |
2518 | print_wchar (elem->chars[0], elem->buf, elem->buflen, width, | |
2519 | byte_order, obstack, quote_char, &need_escape); | |
2520 | else | |
2521 | print_wchar (gdb_WEOF, elem->buf, elem->buflen, width, | |
2522 | byte_order, obstack, quote_char, &need_escape); | |
2523 | obstack_grow_wstr (obstack, LCST ("'")); | |
2524 | std::string s = string_printf (_(" <repeats %u times>"), | |
2525 | elem->repeat_count); | |
2526 | num_elements += elem->repeat_count; | |
2527 | for (j = 0; s[j]; ++j) | |
2528 | { | |
2529 | gdb_wchar_t w = gdb_btowc (s[j]); | |
2530 | obstack_grow (obstack, &w, sizeof (gdb_wchar_t)); | |
2531 | } | |
2532 | } | |
2533 | break; | |
2534 | ||
2535 | case INCOMPLETE: | |
2536 | /* We are outputting an incomplete sequence. */ | |
2537 | if (last == SINGLE) | |
2538 | { | |
2539 | /* If we were outputting a string of SINGLE characters, | |
2540 | terminate the quote. */ | |
2541 | obstack_grow (obstack, &wide_quote_char, sizeof (gdb_wchar_t)); | |
2542 | } | |
2543 | if (last != START) | |
2544 | obstack_grow_wstr (obstack, LCST (", ")); | |
2545 | ||
2546 | /* Output the incomplete sequence string. */ | |
2547 | obstack_grow_wstr (obstack, LCST ("<incomplete sequence ")); | |
2548 | print_wchar (gdb_WEOF, elem->buf, elem->buflen, width, byte_order, | |
2549 | obstack, 0, &need_escape); | |
2550 | obstack_grow_wstr (obstack, LCST (">")); | |
2551 | num_elements += 1; | |
2552 | ||
2553 | /* We do not attempt to output anything after this. */ | |
2554 | state = FINISH; | |
2555 | break; | |
2556 | ||
2557 | case FINISH: | |
2558 | /* All done. If we were outputting a string of SINGLE | |
2559 | characters, the string must be terminated. Otherwise, | |
2560 | REPEAT and INCOMPLETE are always left properly terminated. */ | |
2561 | if (last == SINGLE) | |
2562 | obstack_grow (obstack, &wide_quote_char, sizeof (gdb_wchar_t)); | |
2563 | ||
2564 | return; | |
2565 | } | |
2566 | ||
2567 | /* Get the next element and state. */ | |
2568 | last = state; | |
2569 | if (state != FINISH) | |
2570 | { | |
2571 | elem = &chars[idx++]; | |
2572 | switch (elem->result) | |
2573 | { | |
2574 | case wchar_iterate_ok: | |
2575 | case wchar_iterate_invalid: | |
2576 | if (elem->repeat_count > options->repeat_count_threshold) | |
2577 | state = REPEAT; | |
2578 | else | |
2579 | state = SINGLE; | |
2580 | break; | |
2581 | ||
2582 | case wchar_iterate_incomplete: | |
2583 | state = INCOMPLETE; | |
2584 | break; | |
2585 | ||
2586 | case wchar_iterate_eof: | |
2587 | state = FINISH; | |
2588 | break; | |
2589 | } | |
2590 | } | |
2591 | } | |
2592 | } | |
2593 | ||
2594 | /* Print the character string STRING, printing at most LENGTH | |
2595 | characters. LENGTH is -1 if the string is nul terminated. TYPE is | |
2596 | the type of each character. OPTIONS holds the printing options; | |
2597 | printing stops early if the number hits print_max_chars; repeat | |
2598 | counts are printed as appropriate. Print ellipses at the end if we | |
2599 | had to stop before printing LENGTH characters, or if FORCE_ELLIPSES. | |
2600 | QUOTE_CHAR is the character to print at each end of the string. If | |
2601 | C_STYLE_TERMINATOR is true, and the last character is 0, then it is | |
2602 | omitted. */ | |
2603 | ||
2604 | void | |
2605 | generic_printstr (struct ui_file *stream, struct type *type, | |
2606 | const gdb_byte *string, unsigned int length, | |
2607 | const char *encoding, int force_ellipses, | |
2608 | int quote_char, int c_style_terminator, | |
2609 | const struct value_print_options *options) | |
2610 | { | |
2611 | enum bfd_endian byte_order = type_byte_order (type); | |
2612 | unsigned int i; | |
2613 | int width = type->length (); | |
2614 | int finished = 0; | |
2615 | struct converted_character *last; | |
2616 | ||
2617 | if (length == -1) | |
2618 | { | |
2619 | unsigned long current_char = 1; | |
2620 | ||
2621 | for (i = 0; current_char; ++i) | |
2622 | { | |
2623 | QUIT; | |
2624 | current_char = extract_unsigned_integer (string + i * width, | |
2625 | width, byte_order); | |
2626 | } | |
2627 | length = i; | |
2628 | } | |
2629 | ||
2630 | /* If the string was not truncated due to `set print elements', and | |
2631 | the last byte of it is a null, we don't print that, in | |
2632 | traditional C style. */ | |
2633 | if (c_style_terminator | |
2634 | && !force_ellipses | |
2635 | && length > 0 | |
2636 | && (extract_unsigned_integer (string + (length - 1) * width, | |
2637 | width, byte_order) == 0)) | |
2638 | length--; | |
2639 | ||
2640 | if (length == 0) | |
2641 | { | |
2642 | gdb_printf (stream, "%c%c", quote_char, quote_char); | |
2643 | return; | |
2644 | } | |
2645 | ||
2646 | /* Arrange to iterate over the characters, in wchar_t form. */ | |
2647 | wchar_iterator iter (string, length * width, encoding, width); | |
2648 | std::vector<converted_character> converted_chars; | |
2649 | ||
2650 | /* Convert characters until the string is over or the maximum | |
2651 | number of printed characters has been reached. */ | |
2652 | i = 0; | |
2653 | unsigned int print_max_chars = get_print_max_chars (options); | |
2654 | while (i < print_max_chars) | |
2655 | { | |
2656 | int r; | |
2657 | ||
2658 | QUIT; | |
2659 | ||
2660 | /* Grab the next character and repeat count. */ | |
2661 | r = count_next_character (&iter, &converted_chars); | |
2662 | ||
2663 | /* If less than zero, the end of the input string was reached. */ | |
2664 | if (r < 0) | |
2665 | break; | |
2666 | ||
2667 | /* Otherwise, add the count to the total print count and get | |
2668 | the next character. */ | |
2669 | i += r; | |
2670 | } | |
2671 | ||
2672 | /* Get the last element and determine if the entire string was | |
2673 | processed. */ | |
2674 | last = &converted_chars.back (); | |
2675 | finished = (last->result == wchar_iterate_eof); | |
2676 | ||
2677 | /* Ensure that CONVERTED_CHARS is terminated. */ | |
2678 | last->result = wchar_iterate_eof; | |
2679 | ||
2680 | /* WCHAR_BUF is the obstack we use to represent the string in | |
2681 | wchar_t form. */ | |
2682 | auto_obstack wchar_buf; | |
2683 | ||
2684 | /* Print the output string to the obstack. */ | |
2685 | print_converted_chars_to_obstack (&wchar_buf, converted_chars, quote_char, | |
2686 | width, byte_order, options, &finished); | |
2687 | ||
2688 | if (force_ellipses || !finished) | |
2689 | obstack_grow_wstr (&wchar_buf, LCST ("...")); | |
2690 | ||
2691 | /* OUTPUT is where we collect `char's for printing. */ | |
2692 | auto_obstack output; | |
2693 | ||
2694 | convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (), | |
2695 | (gdb_byte *) obstack_base (&wchar_buf), | |
2696 | obstack_object_size (&wchar_buf), | |
2697 | sizeof (gdb_wchar_t), &output, translit_char); | |
2698 | obstack_1grow (&output, '\0'); | |
2699 | ||
2700 | gdb_puts ((const char *) obstack_base (&output), stream); | |
2701 | } | |
2702 | ||
2703 | /* Print a string from the inferior, starting at ADDR and printing up to LEN | |
2704 | characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing | |
2705 | stops at the first null byte, otherwise printing proceeds (including null | |
2706 | bytes) until either print_max_chars or LEN characters have been printed, | |
2707 | whichever is smaller. ENCODING is the name of the string's | |
2708 | encoding. It can be NULL, in which case the target encoding is | |
2709 | assumed. */ | |
2710 | ||
2711 | int | |
2712 | val_print_string (struct type *elttype, const char *encoding, | |
2713 | CORE_ADDR addr, int len, | |
2714 | struct ui_file *stream, | |
2715 | const struct value_print_options *options) | |
2716 | { | |
2717 | int force_ellipsis = 0; /* Force ellipsis to be printed if nonzero. */ | |
2718 | int err; /* Non-zero if we got a bad read. */ | |
2719 | int found_nul; /* Non-zero if we found the nul char. */ | |
2720 | unsigned int fetchlimit; /* Maximum number of chars to print. */ | |
2721 | int bytes_read; | |
2722 | gdb::unique_xmalloc_ptr<gdb_byte> buffer; /* Dynamically growable fetch buffer. */ | |
2723 | struct gdbarch *gdbarch = elttype->arch (); | |
2724 | enum bfd_endian byte_order = type_byte_order (elttype); | |
2725 | int width = elttype->length (); | |
2726 | ||
2727 | /* First we need to figure out the limit on the number of characters we are | |
2728 | going to attempt to fetch and print. This is actually pretty simple. | |
2729 | If LEN >= zero, then the limit is the minimum of LEN and print_max_chars. | |
2730 | If LEN is -1, then the limit is print_max_chars. This is true regardless | |
2731 | of whether print_max_chars is zero, UINT_MAX (unlimited), or something in | |
2732 | between, because finding the null byte (or available memory) is what | |
2733 | actually limits the fetch. */ | |
2734 | ||
2735 | unsigned int print_max_chars = get_print_max_chars (options); | |
2736 | fetchlimit = (len == -1 | |
2737 | ? print_max_chars | |
2738 | : std::min ((unsigned) len, print_max_chars)); | |
2739 | ||
2740 | err = target_read_string (addr, len, width, fetchlimit, | |
2741 | &buffer, &bytes_read); | |
2742 | ||
2743 | addr += bytes_read; | |
2744 | ||
2745 | /* We now have either successfully filled the buffer to fetchlimit, | |
2746 | or terminated early due to an error or finding a null char when | |
2747 | LEN is -1. */ | |
2748 | ||
2749 | /* Determine found_nul by looking at the last character read. */ | |
2750 | found_nul = 0; | |
2751 | if (bytes_read >= width) | |
2752 | found_nul = extract_unsigned_integer (buffer.get () + bytes_read - width, | |
2753 | width, byte_order) == 0; | |
2754 | if (len == -1 && !found_nul) | |
2755 | { | |
2756 | gdb_byte *peekbuf; | |
2757 | ||
2758 | /* We didn't find a NUL terminator we were looking for. Attempt | |
2759 | to peek at the next character. If not successful, or it is not | |
2760 | a null byte, then force ellipsis to be printed. */ | |
2761 | ||
2762 | peekbuf = (gdb_byte *) alloca (width); | |
2763 | ||
2764 | if (target_read_memory (addr, peekbuf, width) == 0 | |
2765 | && extract_unsigned_integer (peekbuf, width, byte_order) != 0) | |
2766 | force_ellipsis = 1; | |
2767 | } | |
2768 | else if ((len >= 0 && err != 0) || (len > bytes_read / width)) | |
2769 | { | |
2770 | /* Getting an error when we have a requested length, or fetching less | |
2771 | than the number of characters actually requested, always make us | |
2772 | print ellipsis. */ | |
2773 | force_ellipsis = 1; | |
2774 | } | |
2775 | ||
2776 | /* If we get an error before fetching anything, don't print a string. | |
2777 | But if we fetch something and then get an error, print the string | |
2778 | and then the error message. */ | |
2779 | if (err == 0 || bytes_read > 0) | |
2780 | current_language->printstr (stream, elttype, buffer.get (), | |
2781 | bytes_read / width, | |
2782 | encoding, force_ellipsis, options); | |
2783 | ||
2784 | if (err != 0) | |
2785 | { | |
2786 | std::string str = memory_error_message (TARGET_XFER_E_IO, gdbarch, addr); | |
2787 | ||
2788 | gdb_printf (stream, _("<error: %ps>"), | |
2789 | styled_string (metadata_style.style (), | |
2790 | str.c_str ())); | |
2791 | } | |
2792 | ||
2793 | return (bytes_read / width); | |
2794 | } | |
2795 | ||
2796 | /* Handle 'show print max-depth'. */ | |
2797 | ||
2798 | static void | |
2799 | show_print_max_depth (struct ui_file *file, int from_tty, | |
2800 | struct cmd_list_element *c, const char *value) | |
2801 | { | |
2802 | gdb_printf (file, _("Maximum print depth is %s.\n"), value); | |
2803 | } | |
2804 | \f | |
2805 | ||
2806 | /* The 'set input-radix' command writes to this auxiliary variable. | |
2807 | If the requested radix is valid, INPUT_RADIX is updated; otherwise, | |
2808 | it is left unchanged. */ | |
2809 | ||
2810 | static unsigned input_radix_1 = 10; | |
2811 | ||
2812 | /* Validate an input or output radix setting, and make sure the user | |
2813 | knows what they really did here. Radix setting is confusing, e.g. | |
2814 | setting the input radix to "10" never changes it! */ | |
2815 | ||
2816 | static void | |
2817 | set_input_radix (const char *args, int from_tty, struct cmd_list_element *c) | |
2818 | { | |
2819 | set_input_radix_1 (from_tty, input_radix_1); | |
2820 | } | |
2821 | ||
2822 | static void | |
2823 | set_input_radix_1 (int from_tty, unsigned radix) | |
2824 | { | |
2825 | /* We don't currently disallow any input radix except 0 or 1, which don't | |
2826 | make any mathematical sense. In theory, we can deal with any input | |
2827 | radix greater than 1, even if we don't have unique digits for every | |
2828 | value from 0 to radix-1, but in practice we lose on large radix values. | |
2829 | We should either fix the lossage or restrict the radix range more. | |
2830 | (FIXME). */ | |
2831 | ||
2832 | if (radix < 2) | |
2833 | { | |
2834 | input_radix_1 = input_radix; | |
2835 | error (_("Nonsense input radix ``decimal %u''; input radix unchanged."), | |
2836 | radix); | |
2837 | } | |
2838 | input_radix_1 = input_radix = radix; | |
2839 | if (from_tty) | |
2840 | { | |
2841 | gdb_printf (_("Input radix now set to " | |
2842 | "decimal %u, hex %x, octal %o.\n"), | |
2843 | radix, radix, radix); | |
2844 | } | |
2845 | } | |
2846 | ||
2847 | /* The 'set output-radix' command writes to this auxiliary variable. | |
2848 | If the requested radix is valid, OUTPUT_RADIX is updated, | |
2849 | otherwise, it is left unchanged. */ | |
2850 | ||
2851 | static unsigned output_radix_1 = 10; | |
2852 | ||
2853 | static void | |
2854 | set_output_radix (const char *args, int from_tty, struct cmd_list_element *c) | |
2855 | { | |
2856 | set_output_radix_1 (from_tty, output_radix_1); | |
2857 | } | |
2858 | ||
2859 | static void | |
2860 | set_output_radix_1 (int from_tty, unsigned radix) | |
2861 | { | |
2862 | /* Validate the radix and disallow ones that we aren't prepared to | |
2863 | handle correctly, leaving the radix unchanged. */ | |
2864 | switch (radix) | |
2865 | { | |
2866 | case 16: | |
2867 | user_print_options.output_format = 'x'; /* hex */ | |
2868 | break; | |
2869 | case 10: | |
2870 | user_print_options.output_format = 0; /* decimal */ | |
2871 | break; | |
2872 | case 8: | |
2873 | user_print_options.output_format = 'o'; /* octal */ | |
2874 | break; | |
2875 | default: | |
2876 | output_radix_1 = output_radix; | |
2877 | error (_("Unsupported output radix ``decimal %u''; " | |
2878 | "output radix unchanged."), | |
2879 | radix); | |
2880 | } | |
2881 | output_radix_1 = output_radix = radix; | |
2882 | if (from_tty) | |
2883 | { | |
2884 | gdb_printf (_("Output radix now set to " | |
2885 | "decimal %u, hex %x, octal %o.\n"), | |
2886 | radix, radix, radix); | |
2887 | } | |
2888 | } | |
2889 | ||
2890 | /* Set both the input and output radix at once. Try to set the output radix | |
2891 | first, since it has the most restrictive range. An radix that is valid as | |
2892 | an output radix is also valid as an input radix. | |
2893 | ||
2894 | It may be useful to have an unusual input radix. If the user wishes to | |
2895 | set an input radix that is not valid as an output radix, he needs to use | |
2896 | the 'set input-radix' command. */ | |
2897 | ||
2898 | static void | |
2899 | set_radix (const char *arg, int from_tty) | |
2900 | { | |
2901 | unsigned radix; | |
2902 | ||
2903 | radix = (arg == NULL) ? 10 : parse_and_eval_long (arg); | |
2904 | set_output_radix_1 (0, radix); | |
2905 | set_input_radix_1 (0, radix); | |
2906 | if (from_tty) | |
2907 | { | |
2908 | gdb_printf (_("Input and output radices now set to " | |
2909 | "decimal %u, hex %x, octal %o.\n"), | |
2910 | radix, radix, radix); | |
2911 | } | |
2912 | } | |
2913 | ||
2914 | /* Show both the input and output radices. */ | |
2915 | ||
2916 | static void | |
2917 | show_radix (const char *arg, int from_tty) | |
2918 | { | |
2919 | if (from_tty) | |
2920 | { | |
2921 | if (input_radix == output_radix) | |
2922 | { | |
2923 | gdb_printf (_("Input and output radices set to " | |
2924 | "decimal %u, hex %x, octal %o.\n"), | |
2925 | input_radix, input_radix, input_radix); | |
2926 | } | |
2927 | else | |
2928 | { | |
2929 | gdb_printf (_("Input radix set to decimal " | |
2930 | "%u, hex %x, octal %o.\n"), | |
2931 | input_radix, input_radix, input_radix); | |
2932 | gdb_printf (_("Output radix set to decimal " | |
2933 | "%u, hex %x, octal %o.\n"), | |
2934 | output_radix, output_radix, output_radix); | |
2935 | } | |
2936 | } | |
2937 | } | |
2938 | \f | |
2939 | ||
2940 | /* Controls printing of vtbl's. */ | |
2941 | static void | |
2942 | show_vtblprint (struct ui_file *file, int from_tty, | |
2943 | struct cmd_list_element *c, const char *value) | |
2944 | { | |
2945 | gdb_printf (file, _("\ | |
2946 | Printing of C++ virtual function tables is %s.\n"), | |
2947 | value); | |
2948 | } | |
2949 | ||
2950 | /* Controls looking up an object's derived type using what we find in | |
2951 | its vtables. */ | |
2952 | static void | |
2953 | show_objectprint (struct ui_file *file, int from_tty, | |
2954 | struct cmd_list_element *c, | |
2955 | const char *value) | |
2956 | { | |
2957 | gdb_printf (file, _("\ | |
2958 | Printing of object's derived type based on vtable info is %s.\n"), | |
2959 | value); | |
2960 | } | |
2961 | ||
2962 | static void | |
2963 | show_static_field_print (struct ui_file *file, int from_tty, | |
2964 | struct cmd_list_element *c, | |
2965 | const char *value) | |
2966 | { | |
2967 | gdb_printf (file, | |
2968 | _("Printing of C++ static members is %s.\n"), | |
2969 | value); | |
2970 | } | |
2971 | ||
2972 | \f | |
2973 | ||
2974 | /* A couple typedefs to make writing the options a bit more | |
2975 | convenient. */ | |
2976 | using boolean_option_def | |
2977 | = gdb::option::boolean_option_def<value_print_options>; | |
2978 | using uinteger_option_def | |
2979 | = gdb::option::uinteger_option_def<value_print_options>; | |
2980 | using pinteger_option_def | |
2981 | = gdb::option::pinteger_option_def<value_print_options>; | |
2982 | ||
2983 | /* Extra literals supported with the `set print characters' and | |
2984 | `print -characters' commands. */ | |
2985 | static const literal_def print_characters_literals[] = | |
2986 | { | |
2987 | { "elements", PRINT_MAX_CHARS_ELEMENTS }, | |
2988 | { "unlimited", PRINT_MAX_CHARS_UNLIMITED, 0 }, | |
2989 | { nullptr } | |
2990 | }; | |
2991 | ||
2992 | /* Definitions of options for the "print" and "compile print" | |
2993 | commands. */ | |
2994 | static const gdb::option::option_def value_print_option_defs[] = { | |
2995 | ||
2996 | boolean_option_def { | |
2997 | "address", | |
2998 | [] (value_print_options *opt) { return &opt->addressprint; }, | |
2999 | show_addressprint, /* show_cmd_cb */ | |
3000 | N_("Set printing of addresses."), | |
3001 | N_("Show printing of addresses."), | |
3002 | NULL, /* help_doc */ | |
3003 | }, | |
3004 | ||
3005 | boolean_option_def { | |
3006 | "array", | |
3007 | [] (value_print_options *opt) { return &opt->prettyformat_arrays; }, | |
3008 | show_prettyformat_arrays, /* show_cmd_cb */ | |
3009 | N_("Set pretty formatting of arrays."), | |
3010 | N_("Show pretty formatting of arrays."), | |
3011 | NULL, /* help_doc */ | |
3012 | }, | |
3013 | ||
3014 | boolean_option_def { | |
3015 | "array-indexes", | |
3016 | [] (value_print_options *opt) { return &opt->print_array_indexes; }, | |
3017 | show_print_array_indexes, /* show_cmd_cb */ | |
3018 | N_("Set printing of array indexes."), | |
3019 | N_("Show printing of array indexes."), | |
3020 | NULL, /* help_doc */ | |
3021 | }, | |
3022 | ||
3023 | boolean_option_def { | |
3024 | "nibbles", | |
3025 | [] (value_print_options *opt) { return &opt->nibblesprint; }, | |
3026 | show_nibbles, /* show_cmd_cb */ | |
3027 | N_("Set whether to print binary values in groups of four bits."), | |
3028 | N_("Show whether to print binary values in groups of four bits."), | |
3029 | NULL, /* help_doc */ | |
3030 | }, | |
3031 | ||
3032 | uinteger_option_def { | |
3033 | "characters", | |
3034 | [] (value_print_options *opt) { return &opt->print_max_chars; }, | |
3035 | print_characters_literals, | |
3036 | show_print_max_chars, /* show_cmd_cb */ | |
3037 | N_("Set limit on string chars to print."), | |
3038 | N_("Show limit on string chars to print."), | |
3039 | N_("\"elements\" causes the array element limit to be used.\n" | |
3040 | "\"unlimited\" causes there to be no limit."), | |
3041 | }, | |
3042 | ||
3043 | uinteger_option_def { | |
3044 | "elements", | |
3045 | [] (value_print_options *opt) { return &opt->print_max; }, | |
3046 | uinteger_unlimited_literals, | |
3047 | show_print_max, /* show_cmd_cb */ | |
3048 | N_("Set limit on array elements to print."), | |
3049 | N_("Show limit on array elements to print."), | |
3050 | N_("\"unlimited\" causes there to be no limit.\n" | |
3051 | "This setting also applies to string chars when \"print characters\"\n" | |
3052 | "is set to \"elements\"."), | |
3053 | }, | |
3054 | ||
3055 | pinteger_option_def { | |
3056 | "max-depth", | |
3057 | [] (value_print_options *opt) { return &opt->max_depth; }, | |
3058 | pinteger_unlimited_literals, | |
3059 | show_print_max_depth, /* show_cmd_cb */ | |
3060 | N_("Set maximum print depth for nested structures, unions and arrays."), | |
3061 | N_("Show maximum print depth for nested structures, unions, and arrays."), | |
3062 | N_("When structures, unions, or arrays are nested beyond this depth then they\n\ | |
3063 | will be replaced with either '{...}' or '(...)' depending on the language.\n\ | |
3064 | Use \"unlimited\" to print the complete structure.") | |
3065 | }, | |
3066 | ||
3067 | boolean_option_def { | |
3068 | "memory-tag-violations", | |
3069 | [] (value_print_options *opt) { return &opt->memory_tag_violations; }, | |
3070 | show_memory_tag_violations, /* show_cmd_cb */ | |
3071 | N_("Set printing of memory tag violations for pointers."), | |
3072 | N_("Show printing of memory tag violations for pointers."), | |
3073 | N_("Issue a warning when the printed value is a pointer\n\ | |
3074 | whose logical tag doesn't match the allocation tag of the memory\n\ | |
3075 | location it points to."), | |
3076 | }, | |
3077 | ||
3078 | boolean_option_def { | |
3079 | "null-stop", | |
3080 | [] (value_print_options *opt) { return &opt->stop_print_at_null; }, | |
3081 | show_stop_print_at_null, /* show_cmd_cb */ | |
3082 | N_("Set printing of char arrays to stop at first null char."), | |
3083 | N_("Show printing of char arrays to stop at first null char."), | |
3084 | NULL, /* help_doc */ | |
3085 | }, | |
3086 | ||
3087 | boolean_option_def { | |
3088 | "object", | |
3089 | [] (value_print_options *opt) { return &opt->objectprint; }, | |
3090 | show_objectprint, /* show_cmd_cb */ | |
3091 | _("Set printing of C++ virtual function tables."), | |
3092 | _("Show printing of C++ virtual function tables."), | |
3093 | NULL, /* help_doc */ | |
3094 | }, | |
3095 | ||
3096 | boolean_option_def { | |
3097 | "pretty", | |
3098 | [] (value_print_options *opt) { return &opt->prettyformat_structs; }, | |
3099 | show_prettyformat_structs, /* show_cmd_cb */ | |
3100 | N_("Set pretty formatting of structures."), | |
3101 | N_("Show pretty formatting of structures."), | |
3102 | NULL, /* help_doc */ | |
3103 | }, | |
3104 | ||
3105 | boolean_option_def { | |
3106 | "raw-values", | |
3107 | [] (value_print_options *opt) { return &opt->raw; }, | |
3108 | NULL, /* show_cmd_cb */ | |
3109 | N_("Set whether to print values in raw form."), | |
3110 | N_("Show whether to print values in raw form."), | |
3111 | N_("If set, values are printed in raw form, bypassing any\n\ | |
3112 | pretty-printers for that value.") | |
3113 | }, | |
3114 | ||
3115 | uinteger_option_def { | |
3116 | "repeats", | |
3117 | [] (value_print_options *opt) { return &opt->repeat_count_threshold; }, | |
3118 | uinteger_unlimited_literals, | |
3119 | show_repeat_count_threshold, /* show_cmd_cb */ | |
3120 | N_("Set threshold for repeated print elements."), | |
3121 | N_("Show threshold for repeated print elements."), | |
3122 | N_("\"unlimited\" causes all elements to be individually printed."), | |
3123 | }, | |
3124 | ||
3125 | boolean_option_def { | |
3126 | "static-members", | |
3127 | [] (value_print_options *opt) { return &opt->static_field_print; }, | |
3128 | show_static_field_print, /* show_cmd_cb */ | |
3129 | N_("Set printing of C++ static members."), | |
3130 | N_("Show printing of C++ static members."), | |
3131 | NULL, /* help_doc */ | |
3132 | }, | |
3133 | ||
3134 | boolean_option_def { | |
3135 | "symbol", | |
3136 | [] (value_print_options *opt) { return &opt->symbol_print; }, | |
3137 | show_symbol_print, /* show_cmd_cb */ | |
3138 | N_("Set printing of symbol names when printing pointers."), | |
3139 | N_("Show printing of symbol names when printing pointers."), | |
3140 | NULL, /* help_doc */ | |
3141 | }, | |
3142 | ||
3143 | boolean_option_def { | |
3144 | "union", | |
3145 | [] (value_print_options *opt) { return &opt->unionprint; }, | |
3146 | show_unionprint, /* show_cmd_cb */ | |
3147 | N_("Set printing of unions interior to structures."), | |
3148 | N_("Show printing of unions interior to structures."), | |
3149 | NULL, /* help_doc */ | |
3150 | }, | |
3151 | ||
3152 | boolean_option_def { | |
3153 | "vtbl", | |
3154 | [] (value_print_options *opt) { return &opt->vtblprint; }, | |
3155 | show_vtblprint, /* show_cmd_cb */ | |
3156 | N_("Set printing of C++ virtual function tables."), | |
3157 | N_("Show printing of C++ virtual function tables."), | |
3158 | NULL, /* help_doc */ | |
3159 | }, | |
3160 | }; | |
3161 | ||
3162 | /* See valprint.h. */ | |
3163 | ||
3164 | gdb::option::option_def_group | |
3165 | make_value_print_options_def_group (value_print_options *opts) | |
3166 | { | |
3167 | return {{value_print_option_defs}, opts}; | |
3168 | } | |
3169 | ||
3170 | #if GDB_SELF_TEST | |
3171 | ||
3172 | /* Test printing of TYPE_CODE_FLAGS values. */ | |
3173 | ||
3174 | static void | |
3175 | test_print_flags (gdbarch *arch) | |
3176 | { | |
3177 | type *flags_type = arch_flags_type (arch, "test_type", 32); | |
3178 | type *field_type = builtin_type (arch)->builtin_uint32; | |
3179 | ||
3180 | /* Value: 1010 1010 | |
3181 | Fields: CCCB BAAA */ | |
3182 | append_flags_type_field (flags_type, 0, 3, field_type, "A"); | |
3183 | append_flags_type_field (flags_type, 3, 2, field_type, "B"); | |
3184 | append_flags_type_field (flags_type, 5, 3, field_type, "C"); | |
3185 | ||
3186 | value *val = value::allocate (flags_type); | |
3187 | gdb_byte *contents = val->contents_writeable ().data (); | |
3188 | store_unsigned_integer (contents, 4, gdbarch_byte_order (arch), 0xaa); | |
3189 | ||
3190 | string_file out; | |
3191 | val_print_type_code_flags (flags_type, val, 0, &out); | |
3192 | SELF_CHECK (out.string () == "[ A=2 B=1 C=5 ]"); | |
3193 | } | |
3194 | ||
3195 | #endif | |
3196 | ||
3197 | INIT_GDB_FILE (valprint) | |
3198 | { | |
3199 | #if GDB_SELF_TEST | |
3200 | selftests::register_test_foreach_arch ("print-flags", test_print_flags); | |
3201 | #endif | |
3202 | ||
3203 | set_show_commands setshow_print_cmds | |
3204 | = add_setshow_prefix_cmd ("print", no_class, | |
3205 | _("Generic command for setting how things print."), | |
3206 | _("Generic command for showing print settings."), | |
3207 | &setprintlist, &showprintlist, | |
3208 | &setlist, &showlist); | |
3209 | add_alias_cmd ("p", setshow_print_cmds.set, no_class, 1, &setlist); | |
3210 | /* Prefer set print to set prompt. */ | |
3211 | add_alias_cmd ("pr", setshow_print_cmds.set, no_class, 1, &setlist); | |
3212 | add_alias_cmd ("p", setshow_print_cmds.show, no_class, 1, &showlist); | |
3213 | add_alias_cmd ("pr", setshow_print_cmds.show, no_class, 1, &showlist); | |
3214 | ||
3215 | set_show_commands setshow_print_raw_cmds | |
3216 | = add_setshow_prefix_cmd | |
3217 | ("raw", no_class, | |
3218 | _("Generic command for setting what things to print in \"raw\" mode."), | |
3219 | _("Generic command for showing \"print raw\" settings."), | |
3220 | &setprintrawlist, &showprintrawlist, &setprintlist, &showprintlist); | |
3221 | deprecate_cmd (setshow_print_raw_cmds.set, nullptr); | |
3222 | deprecate_cmd (setshow_print_raw_cmds.show, nullptr); | |
3223 | ||
3224 | gdb::option::add_setshow_cmds_for_options | |
3225 | (class_support, &user_print_options, value_print_option_defs, | |
3226 | &setprintlist, &showprintlist); | |
3227 | ||
3228 | add_setshow_zuinteger_cmd ("input-radix", class_support, &input_radix_1, | |
3229 | _("\ | |
3230 | Set default input radix for entering numbers."), _("\ | |
3231 | Show default input radix for entering numbers."), NULL, | |
3232 | set_input_radix, | |
3233 | show_input_radix, | |
3234 | &setlist, &showlist); | |
3235 | ||
3236 | add_setshow_zuinteger_cmd ("output-radix", class_support, &output_radix_1, | |
3237 | _("\ | |
3238 | Set default output radix for printing of values."), _("\ | |
3239 | Show default output radix for printing of values."), NULL, | |
3240 | set_output_radix, | |
3241 | show_output_radix, | |
3242 | &setlist, &showlist); | |
3243 | ||
3244 | /* The "set radix" and "show radix" commands are special in that | |
3245 | they are like normal set and show commands but allow two normally | |
3246 | independent variables to be either set or shown with a single | |
3247 | command. So the usual deprecated_add_set_cmd() and [deleted] | |
3248 | add_show_from_set() commands aren't really appropriate. */ | |
3249 | /* FIXME: i18n: With the new add_setshow_integer command, that is no | |
3250 | longer true - show can display anything. */ | |
3251 | add_cmd ("radix", class_support, set_radix, _("\ | |
3252 | Set default input and output number radices.\n\ | |
3253 | Use 'set input-radix' or 'set output-radix' to independently set each.\n\ | |
3254 | Without an argument, sets both radices back to the default value of 10."), | |
3255 | &setlist); | |
3256 | add_cmd ("radix", class_support, show_radix, _("\ | |
3257 | Show the default input and output number radices.\n\ | |
3258 | Use 'show input-radix' or 'show output-radix' to independently show each."), | |
3259 | &showlist); | |
3260 | } |