]>
Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Language independent support for printing types for GDB, the GNU debugger. |
1bac305b | 2 | |
1d506c26 | 3 | Copyright (C) 1986-2024 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
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. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
bf31fd38 | 21 | #include "gdbsupport/gdb_obstack.h" |
ef0f16cc | 22 | #include "bfd.h" |
c906108c SS |
23 | #include "symtab.h" |
24 | #include "gdbtypes.h" | |
25 | #include "expression.h" | |
26 | #include "value.h" | |
27 | #include "gdbcore.h" | |
28 | #include "command.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "target.h" | |
31 | #include "language.h" | |
015a42b4 | 32 | #include "cp-abi.h" |
b9362cc7 | 33 | #include "typeprint.h" |
79a45b7d | 34 | #include "valprint.h" |
53342f27 TT |
35 | #include <ctype.h> |
36 | #include "cli/cli-utils.h" | |
6dddc817 | 37 | #include "extension.h" |
4fc5d43e | 38 | #include "completer.h" |
7f6aba03 | 39 | #include "cli/cli-style.h" |
c906108c | 40 | |
79d43c61 TT |
41 | const struct type_print_options type_print_raw_options = |
42 | { | |
53342f27 TT |
43 | 1, /* raw */ |
44 | 1, /* print_methods */ | |
bd69fc68 | 45 | 1, /* print_typedefs */ |
7c161838 | 46 | 0, /* print_offsets */ |
fbb46296 | 47 | 0, /* print_in_hex */ |
883fd55a | 48 | 0, /* print_nested_type_limit */ |
18a9fc12 TT |
49 | NULL, /* local_typedefs */ |
50 | NULL, /* global_table */ | |
51 | NULL /* global_printers */ | |
79d43c61 TT |
52 | }; |
53 | ||
54 | /* The default flags for 'ptype' and 'whatis'. */ | |
55 | ||
56 | static struct type_print_options default_ptype_flags = | |
57 | { | |
53342f27 TT |
58 | 0, /* raw */ |
59 | 1, /* print_methods */ | |
bd69fc68 | 60 | 1, /* print_typedefs */ |
7c161838 | 61 | 0, /* print_offsets */ |
fbb46296 | 62 | 0, /* print_in_hex */ |
883fd55a | 63 | 0, /* print_nested_type_limit */ |
18a9fc12 TT |
64 | NULL, /* local_typedefs */ |
65 | NULL, /* global_table */ | |
66 | NULL /* global_printers */ | |
79d43c61 | 67 | }; |
5c6ce71d | 68 | |
53342f27 TT |
69 | \f |
70 | ||
e0c547d1 TT |
71 | /* See typeprint.h. */ |
72 | ||
fbb46296 | 73 | const int print_offset_data::indentation = 27; |
e0c547d1 | 74 | |
fbb46296 LS |
75 | /* See typeprint.h. */ |
76 | ||
77 | print_offset_data::print_offset_data (const struct type_print_options *flags) | |
78 | { | |
79 | if (flags != nullptr) | |
80 | print_in_hex = flags->print_in_hex; | |
81 | } | |
e0c547d1 TT |
82 | |
83 | /* See typeprint.h. */ | |
84 | ||
85 | void | |
86 | print_offset_data::maybe_print_hole (struct ui_file *stream, | |
87 | unsigned int bitpos, | |
88 | const char *for_what) | |
89 | { | |
90 | /* We check for END_BITPOS > 0 because there is a specific | |
91 | scenario when END_BITPOS can be zero and BITPOS can be > | |
92 | 0: when we are dealing with a struct/class with a virtual method. | |
93 | Because of the vtable, the first field of the struct/class will | |
94 | have an offset of sizeof (void *) (the size of the vtable). If | |
95 | we do not check for END_BITPOS > 0 here, GDB will report | |
96 | a hole before the first field, which is not accurate. */ | |
97 | if (end_bitpos > 0 && end_bitpos < bitpos) | |
98 | { | |
99 | /* If END_BITPOS is smaller than the current type's | |
100 | bitpos, it means there's a hole in the struct, so we report | |
101 | it here. */ | |
102 | unsigned int hole = bitpos - end_bitpos; | |
103 | unsigned int hole_byte = hole / TARGET_CHAR_BIT; | |
104 | unsigned int hole_bit = hole % TARGET_CHAR_BIT; | |
105 | ||
106 | if (hole_bit > 0) | |
334381ea TT |
107 | { |
108 | fprintf_styled (stream, highlight_style.style (), | |
109 | "/* XXX %2u-bit %-7s */", hole_bit, for_what); | |
0426ad51 | 110 | gdb_puts ("\n", stream); |
334381ea | 111 | } |
e0c547d1 TT |
112 | |
113 | if (hole_byte > 0) | |
334381ea TT |
114 | { |
115 | fprintf_styled (stream, highlight_style.style (), | |
116 | "/* XXX %2u-byte %-7s */", hole_byte, for_what); | |
0426ad51 | 117 | gdb_puts ("\n", stream); |
334381ea | 118 | } |
e0c547d1 TT |
119 | } |
120 | } | |
121 | ||
122 | /* See typeprint.h. */ | |
123 | ||
124 | void | |
125 | print_offset_data::update (struct type *type, unsigned int field_idx, | |
126 | struct ui_file *stream) | |
127 | { | |
c819a338 | 128 | if (type->field (field_idx).is_static ()) |
e0c547d1 | 129 | { |
d0b1020b | 130 | print_spaces (indentation, stream); |
e0c547d1 TT |
131 | return; |
132 | } | |
133 | ||
940da03e | 134 | struct type *ftype = check_typedef (type->field (field_idx).type ()); |
78134374 | 135 | if (type->code () == TYPE_CODE_UNION) |
e0c547d1 TT |
136 | { |
137 | /* Since union fields don't have the concept of offsets, we just | |
138 | print their sizes. */ | |
6cb06a8c TT |
139 | gdb_printf (stream, "/* %6s */", |
140 | (print_in_hex ? | |
df86565b SM |
141 | hex_string_custom (ftype->length (), 4) : |
142 | pulongest (ftype->length ()))); | |
e0c547d1 TT |
143 | return; |
144 | } | |
145 | ||
b610c045 | 146 | unsigned int bitpos = type->field (field_idx).loc_bitpos (); |
df86565b | 147 | unsigned int fieldsize_byte = ftype->length (); |
e0c547d1 TT |
148 | unsigned int fieldsize_bit = fieldsize_byte * TARGET_CHAR_BIT; |
149 | ||
150 | maybe_print_hole (stream, bitpos, "hole"); | |
151 | ||
8c329d5c | 152 | if (type->field (field_idx).is_packed () |
9d3421af | 153 | || offset_bitpos % TARGET_CHAR_BIT != 0) |
e0c547d1 | 154 | { |
9d3421af | 155 | /* We're dealing with a bitfield. Print the bit offset. */ |
3757d2d4 | 156 | fieldsize_bit = type->field (field_idx).bitsize (); |
e0c547d1 | 157 | |
9d3421af TT |
158 | unsigned real_bitpos = bitpos + offset_bitpos; |
159 | ||
6cb06a8c TT |
160 | gdb_printf (stream, |
161 | (print_in_hex ? "/* 0x%04x: 0x%x" : "/* %6u:%2u "), | |
162 | real_bitpos / TARGET_CHAR_BIT, | |
163 | real_bitpos % TARGET_CHAR_BIT); | |
e0c547d1 TT |
164 | } |
165 | else | |
166 | { | |
167 | /* The position of the field, relative to the beginning of the | |
168 | struct. */ | |
6cb06a8c TT |
169 | gdb_printf (stream, (print_in_hex ? "/* 0x%04x" : "/* %6u"), |
170 | (bitpos + offset_bitpos) / TARGET_CHAR_BIT); | |
e0c547d1 | 171 | |
6cb06a8c | 172 | gdb_printf (stream, " "); |
e0c547d1 TT |
173 | } |
174 | ||
6cb06a8c TT |
175 | gdb_printf (stream, (print_in_hex ? " | 0x%04x */" : " | %6u */"), |
176 | fieldsize_byte); | |
e0c547d1 TT |
177 | |
178 | end_bitpos = bitpos + fieldsize_bit; | |
179 | } | |
180 | ||
181 | /* See typeprint.h. */ | |
182 | ||
183 | void | |
184 | print_offset_data::finish (struct type *type, int level, | |
185 | struct ui_file *stream) | |
186 | { | |
df86565b | 187 | unsigned int bitpos = type->length () * TARGET_CHAR_BIT; |
e0c547d1 TT |
188 | maybe_print_hole (stream, bitpos, "padding"); |
189 | ||
0426ad51 | 190 | gdb_puts ("\n", stream); |
d0b1020b | 191 | print_spaces (level + 4 + print_offset_data::indentation, stream); |
6cb06a8c | 192 | gdb_printf (stream, "/* total size (bytes): %4s */\n", |
df86565b | 193 | pulongest (type->length ())); |
e0c547d1 TT |
194 | } |
195 | ||
196 | \f | |
197 | ||
bd69fc68 TT |
198 | /* A hash function for a typedef_field. */ |
199 | ||
200 | static hashval_t | |
201 | hash_typedef_field (const void *p) | |
202 | { | |
883fd55a | 203 | const struct decl_field *tf = (const struct decl_field *) p; |
bd69fc68 | 204 | |
e8db8031 | 205 | return htab_hash_string (TYPE_SAFE_NAME (tf->type)); |
bd69fc68 TT |
206 | } |
207 | ||
208 | /* An equality function for a typedef field. */ | |
209 | ||
210 | static int | |
211 | eq_typedef_field (const void *a, const void *b) | |
212 | { | |
883fd55a KS |
213 | const struct decl_field *tfa = (const struct decl_field *) a; |
214 | const struct decl_field *tfb = (const struct decl_field *) b; | |
bd69fc68 TT |
215 | |
216 | return types_equal (tfa->type, tfb->type); | |
217 | } | |
218 | ||
c819b2c0 | 219 | /* See typeprint.h. */ |
bd69fc68 TT |
220 | |
221 | void | |
c819b2c0 | 222 | typedef_hash_table::recursively_update (struct type *t) |
bd69fc68 TT |
223 | { |
224 | int i; | |
225 | ||
bd69fc68 TT |
226 | for (i = 0; i < TYPE_TYPEDEF_FIELD_COUNT (t); ++i) |
227 | { | |
883fd55a | 228 | struct decl_field *tdef = &TYPE_TYPEDEF_FIELD (t, i); |
bd69fc68 TT |
229 | void **slot; |
230 | ||
fa9b1164 | 231 | slot = htab_find_slot (m_table.get (), tdef, INSERT); |
bd69fc68 TT |
232 | /* Only add a given typedef name once. Really this shouldn't |
233 | happen; but it is safe enough to do the updates breadth-first | |
234 | and thus use the most specific typedef. */ | |
235 | if (*slot == NULL) | |
236 | *slot = tdef; | |
237 | } | |
238 | ||
239 | /* Recurse into superclasses. */ | |
240 | for (i = 0; i < TYPE_N_BASECLASSES (t); ++i) | |
c819b2c0 | 241 | recursively_update (TYPE_BASECLASS (t, i)); |
bd69fc68 TT |
242 | } |
243 | ||
c819b2c0 | 244 | /* See typeprint.h. */ |
bd69fc68 TT |
245 | |
246 | void | |
c819b2c0 | 247 | typedef_hash_table::add_template_parameters (struct type *t) |
bd69fc68 TT |
248 | { |
249 | int i; | |
250 | ||
bd69fc68 TT |
251 | for (i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (t); ++i) |
252 | { | |
883fd55a | 253 | struct decl_field *tf; |
bd69fc68 TT |
254 | void **slot; |
255 | ||
256 | /* We only want type-valued template parameters in the hash. */ | |
66d7f48f | 257 | if (TYPE_TEMPLATE_ARGUMENT (t, i)->aclass () != LOC_TYPEDEF) |
bd69fc68 TT |
258 | continue; |
259 | ||
c819b2c0 | 260 | tf = XOBNEW (&m_storage, struct decl_field); |
987012b8 | 261 | tf->name = TYPE_TEMPLATE_ARGUMENT (t, i)->linkage_name (); |
5f9c5a63 | 262 | tf->type = TYPE_TEMPLATE_ARGUMENT (t, i)->type (); |
bd69fc68 | 263 | |
fa9b1164 | 264 | slot = htab_find_slot (m_table.get (), tf, INSERT); |
bd69fc68 TT |
265 | if (*slot == NULL) |
266 | *slot = tf; | |
267 | } | |
268 | } | |
269 | ||
c819b2c0 | 270 | /* See typeprint.h. */ |
bd69fc68 | 271 | |
c819b2c0 | 272 | typedef_hash_table::typedef_hash_table () |
fa9b1164 TT |
273 | : m_table (htab_create_alloc (10, hash_typedef_field, eq_typedef_field, |
274 | NULL, xcalloc, xfree)) | |
bd69fc68 | 275 | { |
bd69fc68 TT |
276 | } |
277 | ||
c819b2c0 | 278 | /* Helper function for typedef_hash_table::copy. */ |
bd69fc68 TT |
279 | |
280 | static int | |
281 | copy_typedef_hash_element (void **slot, void *nt) | |
282 | { | |
19ba03f4 | 283 | htab_t new_table = (htab_t) nt; |
bd69fc68 TT |
284 | void **new_slot; |
285 | ||
286 | new_slot = htab_find_slot (new_table, *slot, INSERT); | |
287 | if (*new_slot == NULL) | |
288 | *new_slot = *slot; | |
289 | ||
290 | return 1; | |
291 | } | |
292 | ||
c819b2c0 | 293 | /* See typeprint.h. */ |
18a9fc12 | 294 | |
c819b2c0 | 295 | typedef_hash_table::typedef_hash_table (const typedef_hash_table &table) |
18a9fc12 | 296 | { |
fa9b1164 TT |
297 | m_table.reset (htab_create_alloc (10, hash_typedef_field, eq_typedef_field, |
298 | NULL, xcalloc, xfree)); | |
299 | htab_traverse_noresize (table.m_table.get (), copy_typedef_hash_element, | |
300 | m_table.get ()); | |
18a9fc12 TT |
301 | } |
302 | ||
303 | /* Look up the type T in the global typedef hash. If it is found, | |
304 | return the typedef name. If it is not found, apply the | |
6dddc817 | 305 | type-printers, if any, given by start_script_type_printers and return the |
18a9fc12 TT |
306 | result. A NULL return means that the name was not found. */ |
307 | ||
c819b2c0 TT |
308 | const char * |
309 | typedef_hash_table::find_global_typedef (const struct type_print_options *flags, | |
310 | struct type *t) | |
18a9fc12 | 311 | { |
18a9fc12 | 312 | void **slot; |
883fd55a | 313 | struct decl_field tf, *new_tf; |
18a9fc12 TT |
314 | |
315 | if (flags->global_typedefs == NULL) | |
316 | return NULL; | |
317 | ||
318 | tf.name = NULL; | |
319 | tf.type = t; | |
320 | ||
fa9b1164 | 321 | slot = htab_find_slot (flags->global_typedefs->m_table.get (), &tf, INSERT); |
18a9fc12 TT |
322 | if (*slot != NULL) |
323 | { | |
883fd55a | 324 | new_tf = (struct decl_field *) *slot; |
18a9fc12 TT |
325 | return new_tf->name; |
326 | } | |
327 | ||
9b94fcf1 DE |
328 | /* Put an entry into the hash table now, in case |
329 | apply_ext_lang_type_printers recurses. */ | |
c819b2c0 | 330 | new_tf = XOBNEW (&flags->global_typedefs->m_storage, struct decl_field); |
18a9fc12 TT |
331 | new_tf->name = NULL; |
332 | new_tf->type = t; | |
333 | ||
334 | *slot = new_tf; | |
335 | ||
55af06a7 TT |
336 | gdb::unique_xmalloc_ptr<char> applied |
337 | = apply_ext_lang_type_printers (flags->global_printers, t); | |
18a9fc12 | 338 | |
55af06a7 TT |
339 | if (applied != nullptr) |
340 | new_tf->name = obstack_strdup (&flags->global_typedefs->m_storage, | |
341 | applied.get ()); | |
18a9fc12 TT |
342 | |
343 | return new_tf->name; | |
344 | } | |
345 | ||
c819b2c0 | 346 | /* See typeprint.h. */ |
bd69fc68 TT |
347 | |
348 | const char * | |
c819b2c0 TT |
349 | typedef_hash_table::find_typedef (const struct type_print_options *flags, |
350 | struct type *t) | |
bd69fc68 | 351 | { |
18a9fc12 TT |
352 | if (flags->local_typedefs != NULL) |
353 | { | |
883fd55a | 354 | struct decl_field tf, *found; |
bd69fc68 | 355 | |
18a9fc12 TT |
356 | tf.name = NULL; |
357 | tf.type = t; | |
fa9b1164 TT |
358 | htab_t table = flags->local_typedefs->m_table.get (); |
359 | found = (struct decl_field *) htab_find (table, &tf); | |
bd69fc68 | 360 | |
18a9fc12 TT |
361 | if (found != NULL) |
362 | return found->name; | |
363 | } | |
bd69fc68 | 364 | |
18a9fc12 | 365 | return find_global_typedef (flags, t); |
bd69fc68 TT |
366 | } |
367 | ||
368 | \f | |
369 | ||
a5238fbc PM |
370 | /* Print a description of a type in the format of a |
371 | typedef for the current language. | |
c378eb4e | 372 | NEW is the new name for a type TYPE. */ |
a5238fbc PM |
373 | |
374 | void | |
fe978cb0 | 375 | typedef_print (struct type *type, struct symbol *newobj, struct ui_file *stream) |
a5238fbc | 376 | { |
d3b67c56 | 377 | current_language->print_typedef (type, newobj, stream); |
5c6ce71d TT |
378 | } |
379 | ||
c906108c SS |
380 | /* Print a description of a type TYPE in the form of a declaration of a |
381 | variable named VARSTRING. (VARSTRING is demangled if necessary.) | |
382 | Output goes to STREAM (via stdio). | |
383 | If SHOW is positive, we show the contents of the outermost level | |
384 | of structure even if there is a type name that could be used instead. | |
385 | If SHOW is negative, we never show the details of elements' types. */ | |
386 | ||
387 | void | |
0d5cff50 | 388 | type_print (struct type *type, const char *varstring, struct ui_file *stream, |
fba45db2 | 389 | int show) |
c906108c | 390 | { |
13eb081a TT |
391 | current_language->print_type (type, varstring, stream, show, 0, |
392 | &default_ptype_flags); | |
c906108c SS |
393 | } |
394 | ||
ae6a3a4c TJB |
395 | /* Print TYPE to a string, returning it. The caller is responsible for |
396 | freeing the string. */ | |
397 | ||
2f408ecb | 398 | std::string |
ae6a3a4c TJB |
399 | type_to_string (struct type *type) |
400 | { | |
a70b8144 | 401 | try |
ae6a3a4c | 402 | { |
d7e74731 PA |
403 | string_file stb; |
404 | ||
405 | type_print (type, "", &stb, -1); | |
5d10a204 | 406 | return stb.release (); |
ae6a3a4c | 407 | } |
230d2906 | 408 | catch (const gdb_exception &except) |
492d29ea | 409 | { |
492d29ea | 410 | } |
ae6a3a4c | 411 | |
d7e74731 | 412 | return {}; |
ae6a3a4c TJB |
413 | } |
414 | ||
7022349d PA |
415 | /* See typeprint.h. */ |
416 | ||
417 | void | |
418 | type_print_unknown_return_type (struct ui_file *stream) | |
419 | { | |
7f6aba03 TT |
420 | fprintf_styled (stream, metadata_style.style (), |
421 | _("<unknown return type>")); | |
7022349d PA |
422 | } |
423 | ||
46a4882b PA |
424 | /* See typeprint.h. */ |
425 | ||
426 | void | |
427 | error_unknown_type (const char *sym_print_name) | |
428 | { | |
429 | error (_("'%s' has unknown type; cast it to its declared type"), | |
430 | sym_print_name); | |
431 | } | |
432 | ||
c906108c SS |
433 | /* Print type of EXP, or last thing in value history if EXP == NULL. |
434 | show is passed to type_print. */ | |
435 | ||
436 | static void | |
0b39b52e | 437 | whatis_exp (const char *exp, int show) |
c906108c | 438 | { |
3d6d86c6 | 439 | struct value *val; |
c5aa993b | 440 | struct type *real_type = NULL; |
070ad9f0 | 441 | struct type *type; |
c906108c | 442 | int full = 0; |
6b850546 | 443 | LONGEST top = -1; |
c906108c | 444 | int using_enc = 0; |
79a45b7d | 445 | struct value_print_options opts; |
53342f27 | 446 | struct type_print_options flags = default_ptype_flags; |
c906108c SS |
447 | |
448 | if (exp) | |
449 | { | |
53342f27 TT |
450 | if (*exp == '/') |
451 | { | |
452 | int seen_one = 0; | |
453 | ||
454 | for (++exp; *exp && !isspace (*exp); ++exp) | |
455 | { | |
456 | switch (*exp) | |
457 | { | |
458 | case 'r': | |
459 | flags.raw = 1; | |
460 | break; | |
461 | case 'm': | |
462 | flags.print_methods = 0; | |
463 | break; | |
464 | case 'M': | |
465 | flags.print_methods = 1; | |
466 | break; | |
467 | case 't': | |
468 | flags.print_typedefs = 0; | |
469 | break; | |
470 | case 'T': | |
471 | flags.print_typedefs = 1; | |
472 | break; | |
7c161838 SDJ |
473 | case 'o': |
474 | { | |
475 | /* Filter out languages which don't implement the | |
476 | feature. */ | |
46afe196 | 477 | if (show > 0 |
97e20099 | 478 | && current_language->can_print_type_offsets ()) |
7c161838 SDJ |
479 | { |
480 | flags.print_offsets = 1; | |
481 | flags.print_typedefs = 0; | |
482 | flags.print_methods = 0; | |
483 | } | |
484 | break; | |
485 | } | |
fbb46296 LS |
486 | case 'x': |
487 | flags.print_in_hex = 1; | |
488 | break; | |
489 | case 'd': | |
490 | flags.print_in_hex = 0; | |
491 | break; | |
53342f27 TT |
492 | default: |
493 | error (_("unrecognized flag '%c'"), *exp); | |
494 | } | |
495 | seen_one = 1; | |
496 | } | |
497 | ||
498 | if (!*exp && !seen_one) | |
499 | error (_("flag expected")); | |
500 | if (!isspace (*exp)) | |
501 | error (_("expected space after format")); | |
502 | exp = skip_spaces (exp); | |
503 | } | |
504 | ||
4d01a485 | 505 | expression_up expr = parse_expression (exp); |
c973d0aa PA |
506 | |
507 | /* The behavior of "whatis" depends on whether the user | |
508 | expression names a type directly, or a language expression | |
509 | (including variable names). If the former, then "whatis" | |
510 | strips one level of typedefs, only. If an expression, | |
511 | "whatis" prints the type of the expression without stripping | |
512 | any typedef level. "ptype" always strips all levels of | |
513 | typedefs. */ | |
ba71385e | 514 | val = expr->evaluate_type (); |
d0c97917 | 515 | type = val->type (); |
a6f3c8a1 | 516 | |
2adab65c | 517 | if (show == -1 && expr->first_opcode () == OP_TYPE) |
c973d0aa PA |
518 | { |
519 | /* The user expression names a type directly. */ | |
c973d0aa PA |
520 | |
521 | /* If this is a typedef, then find its immediate target. | |
522 | Use check_typedef to resolve stubs, but ignore its result | |
523 | because we do not want to dig past all typedefs. */ | |
524 | check_typedef (type); | |
78134374 | 525 | if (type->code () == TYPE_CODE_TYPEDEF) |
27710edb | 526 | type = type->target_type (); |
5c319bb2 PA |
527 | |
528 | /* If the expression is actually a type, then there's no | |
529 | value to fetch the dynamic type from. */ | |
530 | val = NULL; | |
c973d0aa | 531 | } |
c906108c SS |
532 | } |
533 | else | |
c973d0aa PA |
534 | { |
535 | val = access_value_history (0); | |
d0c97917 | 536 | type = val->type (); |
c973d0aa | 537 | } |
070ad9f0 | 538 | |
0c1aa2a0 TT |
539 | if (flags.print_offsets && is_dynamic_type (type)) |
540 | { | |
541 | warning (_("ptype/o does not work with dynamic types; disabling '/o'")); | |
542 | flags.print_offsets = 0; | |
543 | } | |
544 | ||
79a45b7d | 545 | get_user_print_options (&opts); |
5c319bb2 | 546 | if (val != NULL && opts.objectprint) |
070ad9f0 | 547 | { |
809f3be1 | 548 | if (type->is_pointer_or_reference () |
27710edb | 549 | && (type->target_type ()->code () == TYPE_CODE_STRUCT)) |
dda83cd7 | 550 | real_type = value_rtti_indirect_type (val, &full, &top, &using_enc); |
78134374 | 551 | else if (type->code () == TYPE_CODE_STRUCT) |
41808ebe | 552 | real_type = value_rtti_type (val, &full, &top, &using_enc); |
070ad9f0 | 553 | } |
c906108c | 554 | |
7c161838 | 555 | if (flags.print_offsets |
78134374 SM |
556 | && (type->code () == TYPE_CODE_STRUCT |
557 | || type->code () == TYPE_CODE_UNION)) | |
6cb06a8c | 558 | gdb_printf ("/* offset | size */ "); |
7c161838 | 559 | |
6cb06a8c | 560 | gdb_printf ("type = "); |
c906108c | 561 | |
c819b2c0 TT |
562 | std::unique_ptr<typedef_hash_table> table_holder; |
563 | std::unique_ptr<ext_lang_type_printers> printer_holder; | |
18a9fc12 | 564 | if (!flags.raw) |
c819b2c0 TT |
565 | { |
566 | table_holder.reset (new typedef_hash_table); | |
567 | flags.global_typedefs = table_holder.get (); | |
568 | ||
569 | printer_holder.reset (new ext_lang_type_printers); | |
570 | flags.global_printers = printer_holder.get (); | |
571 | } | |
18a9fc12 | 572 | |
070ad9f0 DB |
573 | if (real_type) |
574 | { | |
6cb06a8c | 575 | gdb_printf ("/* real type = "); |
070ad9f0 DB |
576 | type_print (real_type, "", gdb_stdout, -1); |
577 | if (! full) | |
6cb06a8c TT |
578 | gdb_printf (" (incomplete object)"); |
579 | gdb_printf (" */\n"); | |
070ad9f0 | 580 | } |
c906108c | 581 | |
13eb081a | 582 | current_language->print_type (type, "", gdb_stdout, show, 0, &flags); |
6cb06a8c | 583 | gdb_printf ("\n"); |
c906108c SS |
584 | } |
585 | ||
c906108c | 586 | static void |
0b39b52e | 587 | whatis_command (const char *exp, int from_tty) |
c906108c SS |
588 | { |
589 | /* Most of the time users do not want to see all the fields | |
590 | in a structure. If they do they can use the "ptype" command. | |
591 | Hence the "-1" below. */ | |
592 | whatis_exp (exp, -1); | |
593 | } | |
594 | ||
c906108c SS |
595 | /* TYPENAME is either the name of a type, or an expression. */ |
596 | ||
c906108c | 597 | static void |
0b39b52e | 598 | ptype_command (const char *type_name, int from_tty) |
c906108c | 599 | { |
fe978cb0 | 600 | whatis_exp (type_name, 1); |
c906108c SS |
601 | } |
602 | ||
603 | /* Print integral scalar data VAL, of type TYPE, onto stdio stream STREAM. | |
604 | Used to print data from type structures in a specified type. For example, | |
605 | array bounds may be characters or booleans in some languages, and this | |
606 | allows the ranges to be printed in their "natural" form rather than as | |
607 | decimal integer values. | |
608 | ||
609 | FIXME: This is here simply because only the type printing routines | |
610 | currently use it, and it wasn't clear if it really belonged somewhere | |
611 | else (like printcmd.c). There are a lot of other gdb routines that do | |
612 | something similar, but they are generally concerned with printing values | |
41808ebe | 613 | that come from the inferior in target byte order and target size. */ |
c906108c SS |
614 | |
615 | void | |
fba45db2 | 616 | print_type_scalar (struct type *type, LONGEST val, struct ui_file *stream) |
c906108c SS |
617 | { |
618 | unsigned int i; | |
619 | unsigned len; | |
620 | ||
f168693b | 621 | type = check_typedef (type); |
c906108c | 622 | |
78134374 | 623 | switch (type->code ()) |
c906108c SS |
624 | { |
625 | ||
626 | case TYPE_CODE_ENUM: | |
1f704f76 | 627 | len = type->num_fields (); |
c906108c SS |
628 | for (i = 0; i < len; i++) |
629 | { | |
970db518 | 630 | if (type->field (i).loc_enumval () == val) |
c906108c SS |
631 | { |
632 | break; | |
633 | } | |
634 | } | |
635 | if (i < len) | |
636 | { | |
0426ad51 | 637 | gdb_puts (type->field (i).name (), stream); |
c906108c SS |
638 | } |
639 | else | |
640 | { | |
641 | print_longest (stream, 'd', 0, val); | |
642 | } | |
643 | break; | |
644 | ||
645 | case TYPE_CODE_INT: | |
c6d940a9 | 646 | print_longest (stream, type->is_unsigned () ? 'u' : 'd', 0, val); |
c906108c SS |
647 | break; |
648 | ||
649 | case TYPE_CODE_CHAR: | |
362501dc | 650 | current_language->printchar ((unsigned char) val, type, stream); |
c906108c SS |
651 | break; |
652 | ||
653 | case TYPE_CODE_BOOL: | |
6cb06a8c | 654 | gdb_printf (stream, val ? "TRUE" : "FALSE"); |
c906108c SS |
655 | break; |
656 | ||
657 | case TYPE_CODE_RANGE: | |
27710edb | 658 | print_type_scalar (type->target_type (), val, stream); |
c906108c SS |
659 | return; |
660 | ||
4afa9fd9 JB |
661 | case TYPE_CODE_FIXED_POINT: |
662 | print_type_fixed_point (type, stream); | |
663 | break; | |
664 | ||
c906108c SS |
665 | case TYPE_CODE_UNDEF: |
666 | case TYPE_CODE_PTR: | |
667 | case TYPE_CODE_ARRAY: | |
668 | case TYPE_CODE_STRUCT: | |
669 | case TYPE_CODE_UNION: | |
670 | case TYPE_CODE_FUNC: | |
671 | case TYPE_CODE_FLT: | |
672 | case TYPE_CODE_VOID: | |
673 | case TYPE_CODE_SET: | |
674 | case TYPE_CODE_STRING: | |
675 | case TYPE_CODE_ERROR: | |
0d5de010 DJ |
676 | case TYPE_CODE_MEMBERPTR: |
677 | case TYPE_CODE_METHODPTR: | |
c906108c SS |
678 | case TYPE_CODE_METHOD: |
679 | case TYPE_CODE_REF: | |
aa006118 | 680 | case TYPE_CODE_RVALUE_REF: |
5c4e30ca | 681 | case TYPE_CODE_NAMESPACE: |
8a3fe4f8 | 682 | error (_("internal error: unhandled type in print_type_scalar")); |
c906108c SS |
683 | break; |
684 | ||
685 | default: | |
8a3fe4f8 | 686 | error (_("Invalid type code in symbol table.")); |
c906108c | 687 | } |
c906108c SS |
688 | } |
689 | ||
0c9150e4 JB |
690 | /* See typeprint.h. */ |
691 | ||
692 | void | |
693 | print_type_fixed_point (struct type *type, struct ui_file *stream) | |
694 | { | |
e6fcee3a | 695 | std::string small_img = type->fixed_point_scaling_factor ().str (); |
0c9150e4 | 696 | |
6cb06a8c | 697 | gdb_printf (stream, "%s-byte fixed point (small = %s)", |
df86565b | 698 | pulongest (type->length ()), small_img.c_str ()); |
0c9150e4 JB |
699 | } |
700 | ||
c906108c SS |
701 | /* Dump details of a type specified either directly or indirectly. |
702 | Uses the same sort of type lookup mechanism as ptype_command() | |
41808ebe | 703 | and whatis_command(). */ |
c906108c SS |
704 | |
705 | void | |
58971144 | 706 | maintenance_print_type (const char *type_name, int from_tty) |
c906108c | 707 | { |
fe978cb0 | 708 | if (type_name != NULL) |
c5aa993b | 709 | { |
4d01a485 | 710 | expression_up expr = parse_expression (type_name); |
ba71385e | 711 | struct value *val = expr->evaluate_type (); |
d0c97917 | 712 | struct type *type = val->type (); |
a6f3c8a1 TT |
713 | |
714 | if (type != nullptr) | |
715 | recursive_dump_type (type, 0); | |
c5aa993b | 716 | } |
c906108c | 717 | } |
c906108c | 718 | \f |
c5aa993b | 719 | |
53342f27 TT |
720 | struct cmd_list_element *setprinttypelist; |
721 | ||
722 | struct cmd_list_element *showprinttypelist; | |
723 | ||
491144b5 | 724 | static bool print_methods = true; |
53342f27 TT |
725 | |
726 | static void | |
eb4c3f4a TT |
727 | set_print_type_methods (const char *args, |
728 | int from_tty, struct cmd_list_element *c) | |
53342f27 TT |
729 | { |
730 | default_ptype_flags.print_methods = print_methods; | |
731 | } | |
732 | ||
733 | static void | |
734 | show_print_type_methods (struct ui_file *file, int from_tty, | |
735 | struct cmd_list_element *c, const char *value) | |
736 | { | |
6cb06a8c TT |
737 | gdb_printf (file, _("Printing of methods defined in a class in %s\n"), |
738 | value); | |
53342f27 TT |
739 | } |
740 | ||
491144b5 | 741 | static bool print_typedefs = true; |
53342f27 TT |
742 | |
743 | static void | |
eb4c3f4a TT |
744 | set_print_type_typedefs (const char *args, |
745 | int from_tty, struct cmd_list_element *c) | |
53342f27 TT |
746 | { |
747 | default_ptype_flags.print_typedefs = print_typedefs; | |
748 | } | |
749 | ||
750 | static void | |
751 | show_print_type_typedefs (struct ui_file *file, int from_tty, | |
752 | struct cmd_list_element *c, const char *value) | |
753 | { | |
6cb06a8c TT |
754 | gdb_printf (file, _("Printing of typedefs defined in a class in %s\n"), |
755 | value); | |
53342f27 TT |
756 | } |
757 | ||
883fd55a KS |
758 | /* Limit on the number of nested type definitions to print or -1 to print |
759 | all nested type definitions in a class. By default, we do not print | |
760 | nested definitions. */ | |
761 | ||
762 | static int print_nested_type_limit = 0; | |
763 | ||
764 | /* Set how many nested type definitions should be printed by the type | |
765 | printer. */ | |
766 | ||
767 | static void | |
768 | set_print_type_nested_types (const char *args, int from_tty, | |
769 | struct cmd_list_element *c) | |
770 | { | |
771 | default_ptype_flags.print_nested_type_limit = print_nested_type_limit; | |
772 | } | |
773 | ||
774 | /* Show how many nested type definitions the type printer will print. */ | |
775 | ||
776 | static void | |
777 | show_print_type_nested_types (struct ui_file *file, int from_tty, | |
778 | struct cmd_list_element *c, const char *value) | |
779 | { | |
780 | if (*value == '0') | |
781 | { | |
6cb06a8c TT |
782 | gdb_printf (file, |
783 | _("Will not print nested types defined in a class\n")); | |
883fd55a KS |
784 | } |
785 | else | |
786 | { | |
6cb06a8c TT |
787 | gdb_printf (file, |
788 | _("Will print %s nested types defined in a class\n"), | |
789 | value); | |
883fd55a KS |
790 | } |
791 | } | |
792 | ||
fbb46296 LS |
793 | /* When printing structs, offsets and sizes of members can be displayed using |
794 | decimal notation or hexadecimal notation. By default, Decimal notation is | |
795 | used. */ | |
796 | ||
797 | static bool print_offsets_and_sizes_in_hex = false; | |
798 | ||
799 | /* Set the flags that instructs if sizes and offsets of struct members are | |
800 | displayed in hexadecimal or decimal notation. */ | |
801 | ||
802 | static void | |
803 | set_print_offsets_and_sizes_in_hex (const char *args, | |
804 | int from_tty, struct cmd_list_element *c) | |
805 | { | |
806 | default_ptype_flags.print_in_hex = print_offsets_and_sizes_in_hex; | |
807 | } | |
808 | ||
809 | /* Display whether struct members sizes and offsets are printed | |
810 | using decimal or hexadecimal notation. */ | |
811 | ||
812 | static void | |
813 | show_print_offsets_and_sizes_in_hex (struct ui_file *file, int from_tty, | |
814 | struct cmd_list_element *c, | |
815 | const char *value) | |
816 | { | |
6cb06a8c | 817 | gdb_printf (file, _("\ |
fbb46296 | 818 | Display of struct members offsets and sizes in hexadecimal is %s\n"), |
6cb06a8c | 819 | value); |
fbb46296 LS |
820 | } |
821 | ||
6c265988 | 822 | void _initialize_typeprint (); |
c906108c | 823 | void |
6c265988 | 824 | _initialize_typeprint () |
c906108c | 825 | { |
4fc5d43e TT |
826 | struct cmd_list_element *c; |
827 | ||
828 | c = add_com ("ptype", class_vars, ptype_command, _("\ | |
1bedd215 | 829 | Print definition of type TYPE.\n\ |
a9375afe DE |
830 | Usage: ptype[/FLAGS] TYPE | EXPRESSION\n\ |
831 | Argument may be any type (for example a type name defined by typedef,\n\ | |
832 | or \"struct STRUCT-TAG\" or \"class CLASS-NAME\" or \"union UNION-TAG\"\n\ | |
833 | or \"enum ENUM-TAG\") or an expression.\n\ | |
11081198 | 834 | The selected stack frame's lexical context is used to look up the name.\n\ |
53342f27 TT |
835 | Contrary to \"whatis\", \"ptype\" always unrolls any typedefs.\n\ |
836 | \n\ | |
837 | Available FLAGS are:\n\ | |
838 | /r print in \"raw\" form; do not substitute typedefs\n\ | |
839 | /m do not print methods defined in a class\n\ | |
840 | /M print methods defined in a class\n\ | |
841 | /t do not print typedefs defined in a class\n\ | |
7c161838 | 842 | /T print typedefs defined in a class\n\ |
fbb46296 LS |
843 | /o print offsets and sizes of fields in a struct (like pahole)\n\ |
844 | /x use hexadecimal notation when displaying sizes and offsets\n\ | |
287de656 | 845 | of struct members\n\ |
fbb46296 | 846 | /d use decimal notation when displaying sizes and offsets\n\ |
287de656 | 847 | of struct members ")); |
4fc5d43e | 848 | set_cmd_completer (c, expression_completer); |
c906108c | 849 | |
4fc5d43e TT |
850 | c = add_com ("whatis", class_vars, whatis_command, |
851 | _("Print data type of expression EXP.\n\ | |
11081198 | 852 | Only one level of typedefs is unrolled. See also \"ptype\".")); |
4fc5d43e | 853 | set_cmd_completer (c, expression_completer); |
53342f27 | 854 | |
f54bdb6d SM |
855 | add_setshow_prefix_cmd ("type", no_class, |
856 | _("Generic command for showing type-printing settings."), | |
857 | _("Generic command for setting how types print."), | |
858 | &setprinttypelist, &showprinttypelist, | |
859 | &setprintlist, &showprintlist); | |
53342f27 TT |
860 | |
861 | add_setshow_boolean_cmd ("methods", no_class, &print_methods, | |
862 | _("\ | |
863 | Set printing of methods defined in classes."), _("\ | |
864 | Show printing of methods defined in classes."), NULL, | |
865 | set_print_type_methods, | |
866 | show_print_type_methods, | |
867 | &setprinttypelist, &showprinttypelist); | |
868 | add_setshow_boolean_cmd ("typedefs", no_class, &print_typedefs, | |
869 | _("\ | |
870 | Set printing of typedefs defined in classes."), _("\ | |
871 | Show printing of typedefs defined in classes."), NULL, | |
872 | set_print_type_typedefs, | |
873 | show_print_type_typedefs, | |
874 | &setprinttypelist, &showprinttypelist); | |
883fd55a KS |
875 | |
876 | add_setshow_zuinteger_unlimited_cmd ("nested-type-limit", no_class, | |
877 | &print_nested_type_limit, | |
878 | _("\ | |
879 | Set the number of recursive nested type definitions to print \ | |
880 | (\"unlimited\" or -1 to show all)."), _("\ | |
881 | Show the number of recursive nested type definitions to print."), NULL, | |
882 | set_print_type_nested_types, | |
883 | show_print_type_nested_types, | |
884 | &setprinttypelist, &showprinttypelist); | |
fbb46296 LS |
885 | |
886 | add_setshow_boolean_cmd ("hex", no_class, &print_offsets_and_sizes_in_hex, | |
887 | _("\ | |
888 | Set printing of struct members sizes and offsets using hex notation."), _("\ | |
889 | Show whether sizes and offsets of struct members are printed using hex \ | |
890 | notation."), nullptr, set_print_offsets_and_sizes_in_hex, | |
891 | show_print_offsets_and_sizes_in_hex, | |
892 | &setprinttypelist, &showprinttypelist); | |
c906108c | 893 | } |
3f2f83dd KB |
894 | |
895 | /* Print <not allocated> status to stream STREAM. */ | |
896 | ||
897 | void | |
898 | val_print_not_allocated (struct ui_file *stream) | |
899 | { | |
7f6aba03 | 900 | fprintf_styled (stream, metadata_style.style (), _("<not allocated>")); |
3f2f83dd KB |
901 | } |
902 | ||
903 | /* Print <not associated> status to stream STREAM. */ | |
904 | ||
905 | void | |
906 | val_print_not_associated (struct ui_file *stream) | |
907 | { | |
7f6aba03 | 908 | fprintf_styled (stream, metadata_style.style (), _("<not associated>")); |
3f2f83dd | 909 | } |