Commit | Line | Data |
---|---|---|
373a8247 | 1 | /* Support for printing Pascal values for GDB, the GNU debugger. |
5bcca90b | 2 | |
42a4f53d | 3 | Copyright (C) 2000-2019 Free Software Foundation, Inc. |
373a8247 PM |
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
373a8247 PM |
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 | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
373a8247 PM |
19 | |
20 | /* This file is derived from c-valprint.c */ | |
21 | ||
22 | #include "defs.h" | |
04ea0df1 | 23 | #include "gdb_obstack.h" |
373a8247 PM |
24 | #include "symtab.h" |
25 | #include "gdbtypes.h" | |
26 | #include "expression.h" | |
27 | #include "value.h" | |
28 | #include "command.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "gdbcore.h" | |
31 | #include "demangle.h" | |
32 | #include "valprint.h" | |
3172dc30 | 33 | #include "typeprint.h" |
373a8247 PM |
34 | #include "language.h" |
35 | #include "target.h" | |
36 | #include "annotate.h" | |
37 | #include "p-lang.h" | |
eb43544b | 38 | #include "cp-abi.h" |
d3cbe7ef | 39 | #include "cp-support.h" |
77e371c0 | 40 | #include "objfiles.h" |
268a13a5 | 41 | #include "gdbsupport/byte-vector.h" |
373a8247 PM |
42 | \f |
43 | ||
e88acd96 TT |
44 | /* Decorations for Pascal. */ |
45 | ||
46 | static const struct generic_val_print_decorations p_decorations = | |
47 | { | |
48 | "", | |
49 | " + ", | |
50 | " * I", | |
51 | "true", | |
52 | "false", | |
00272ec4 TT |
53 | "void", |
54 | "{", | |
55 | "}" | |
e88acd96 TT |
56 | }; |
57 | ||
32b72a42 | 58 | /* See val_print for a description of the various parameters of this |
d3eab38a | 59 | function; they are identical. */ |
373a8247 | 60 | |
d3eab38a | 61 | void |
e8b24d9f | 62 | pascal_val_print (struct type *type, |
a2bd3dcd | 63 | int embedded_offset, CORE_ADDR address, |
79a45b7d | 64 | struct ui_file *stream, int recurse, |
e8b24d9f | 65 | struct value *original_value, |
79a45b7d | 66 | const struct value_print_options *options) |
373a8247 | 67 | { |
5af949e3 | 68 | struct gdbarch *gdbarch = get_type_arch (type); |
e17a4113 | 69 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
52f0bd74 | 70 | unsigned int i = 0; /* Number of characters printed */ |
373a8247 PM |
71 | unsigned len; |
72 | struct type *elttype; | |
73 | unsigned eltlen; | |
5598ce11 | 74 | int length_pos, length_size, string_pos; |
6c7a06a3 | 75 | struct type *char_type; |
373a8247 | 76 | CORE_ADDR addr; |
b012acdd | 77 | int want_space = 0; |
e8b24d9f | 78 | const gdb_byte *valaddr = value_contents_for_printing (original_value); |
373a8247 | 79 | |
f168693b | 80 | type = check_typedef (type); |
373a8247 PM |
81 | switch (TYPE_CODE (type)) |
82 | { | |
83 | case TYPE_CODE_ARRAY: | |
b926417a TT |
84 | { |
85 | LONGEST low_bound, high_bound; | |
373a8247 | 86 | |
b926417a TT |
87 | if (get_array_bounds (type, &low_bound, &high_bound)) |
88 | { | |
89 | len = high_bound - low_bound + 1; | |
90 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
91 | eltlen = TYPE_LENGTH (elttype); | |
92 | if (options->prettyformat_arrays) | |
93 | { | |
94 | print_spaces_filtered (2 + 2 * recurse, stream); | |
95 | } | |
96 | /* If 's' format is used, try to print out as string. | |
97 | If no format is given, print as string if element type | |
98 | is of TYPE_CODE_CHAR and element size is 1,2 or 4. */ | |
99 | if (options->format == 's' | |
100 | || ((eltlen == 1 || eltlen == 2 || eltlen == 4) | |
101 | && TYPE_CODE (elttype) == TYPE_CODE_CHAR | |
102 | && options->format == 0)) | |
103 | { | |
104 | /* If requested, look for the first null char and only print | |
105 | elements up to it. */ | |
106 | if (options->stop_print_at_null) | |
107 | { | |
108 | unsigned int temp_len; | |
109 | ||
110 | /* Look for a NULL char. */ | |
111 | for (temp_len = 0; | |
112 | extract_unsigned_integer (valaddr + embedded_offset + | |
113 | temp_len * eltlen, eltlen, | |
114 | byte_order) | |
115 | && temp_len < len && temp_len < options->print_max; | |
116 | temp_len++); | |
117 | len = temp_len; | |
118 | } | |
119 | ||
120 | LA_PRINT_STRING (stream, TYPE_TARGET_TYPE (type), | |
121 | valaddr + embedded_offset, len, NULL, 0, | |
122 | options); | |
123 | i = len; | |
124 | } | |
125 | else | |
126 | { | |
127 | fprintf_filtered (stream, "{"); | |
128 | /* If this is a virtual function table, print the 0th | |
129 | entry specially, and the rest of the members normally. */ | |
130 | if (pascal_object_is_vtbl_ptr_type (elttype)) | |
131 | { | |
132 | i = 1; | |
133 | fprintf_filtered (stream, "%d vtable entries", len - 1); | |
134 | } | |
135 | else | |
136 | { | |
137 | i = 0; | |
138 | } | |
139 | val_print_array_elements (type, embedded_offset, | |
140 | address, stream, recurse, | |
141 | original_value, options, i); | |
142 | fprintf_filtered (stream, "}"); | |
143 | } | |
144 | break; | |
145 | } | |
146 | /* Array of unspecified length: treat like pointer to first elt. */ | |
147 | addr = address + embedded_offset; | |
148 | } | |
373a8247 PM |
149 | goto print_unpacked_pointer; |
150 | ||
151 | case TYPE_CODE_PTR: | |
79a45b7d | 152 | if (options->format && options->format != 's') |
373a8247 | 153 | { |
e8b24d9f | 154 | val_print_scalar_formatted (type, embedded_offset, |
ab2188aa | 155 | original_value, options, 0, stream); |
373a8247 PM |
156 | break; |
157 | } | |
79a45b7d | 158 | if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type)) |
373a8247 PM |
159 | { |
160 | /* Print the unmangled name if desired. */ | |
161 | /* Print vtable entry - we only get here if we ARE using | |
0df8b418 | 162 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */ |
b276f1bb | 163 | /* Extract the address, assume that it is unsigned. */ |
e17a4113 UW |
164 | addr = extract_unsigned_integer (valaddr + embedded_offset, |
165 | TYPE_LENGTH (type), byte_order); | |
edf0c1b7 | 166 | print_address_demangle (options, gdbarch, addr, stream, demangle); |
373a8247 PM |
167 | break; |
168 | } | |
91e8df85 | 169 | check_typedef (TYPE_TARGET_TYPE (type)); |
e13eedd5 PM |
170 | |
171 | addr = unpack_pointer (type, valaddr + embedded_offset); | |
172 | print_unpacked_pointer: | |
173 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
174 | ||
175 | if (TYPE_CODE (elttype) == TYPE_CODE_FUNC) | |
373a8247 | 176 | { |
e13eedd5 | 177 | /* Try to print what function it points to. */ |
edf0c1b7 | 178 | print_address_demangle (options, gdbarch, addr, stream, demangle); |
d3eab38a | 179 | return; |
e13eedd5 | 180 | } |
373a8247 | 181 | |
e13eedd5 PM |
182 | if (options->addressprint && options->format != 's') |
183 | { | |
184 | fputs_filtered (paddress (gdbarch, addr), stream); | |
b012acdd | 185 | want_space = 1; |
e13eedd5 | 186 | } |
373a8247 | 187 | |
e13eedd5 PM |
188 | /* For a pointer to char or unsigned char, also print the string |
189 | pointed to, unless pointer is null. */ | |
190 | if (((TYPE_LENGTH (elttype) == 1 | |
191 | && (TYPE_CODE (elttype) == TYPE_CODE_INT | |
192 | || TYPE_CODE (elttype) == TYPE_CODE_CHAR)) | |
193 | || ((TYPE_LENGTH (elttype) == 2 || TYPE_LENGTH (elttype) == 4) | |
194 | && TYPE_CODE (elttype) == TYPE_CODE_CHAR)) | |
195 | && (options->format == 0 || options->format == 's') | |
196 | && addr != 0) | |
197 | { | |
b012acdd TT |
198 | if (want_space) |
199 | fputs_filtered (" ", stream); | |
0df8b418 | 200 | /* No wide string yet. */ |
09ca9e2e | 201 | i = val_print_string (elttype, NULL, addr, -1, stream, options); |
e13eedd5 | 202 | } |
0df8b418 | 203 | /* Also for pointers to pascal strings. */ |
e13eedd5 PM |
204 | /* Note: this is Free Pascal specific: |
205 | as GDB does not recognize stabs pascal strings | |
206 | Pascal strings are mapped to records | |
0df8b418 | 207 | with lowercase names PM. */ |
e13eedd5 PM |
208 | if (is_pascal_string_type (elttype, &length_pos, &length_size, |
209 | &string_pos, &char_type, NULL) | |
210 | && addr != 0) | |
211 | { | |
212 | ULONGEST string_length; | |
7c543f7b | 213 | gdb_byte *buffer; |
ad3bbd48 | 214 | |
b012acdd TT |
215 | if (want_space) |
216 | fputs_filtered (" ", stream); | |
7c543f7b | 217 | buffer = (gdb_byte *) xmalloc (length_size); |
e13eedd5 PM |
218 | read_memory (addr + length_pos, buffer, length_size); |
219 | string_length = extract_unsigned_integer (buffer, length_size, | |
220 | byte_order); | |
221 | xfree (buffer); | |
09ca9e2e TT |
222 | i = val_print_string (char_type, NULL, |
223 | addr + string_pos, string_length, | |
224 | stream, options); | |
e13eedd5 PM |
225 | } |
226 | else if (pascal_object_is_vtbl_member (type)) | |
227 | { | |
0df8b418 | 228 | /* Print vtbl's nicely. */ |
3e43a32a MS |
229 | CORE_ADDR vt_address = unpack_pointer (type, |
230 | valaddr + embedded_offset); | |
7cbd4a93 | 231 | struct bound_minimal_symbol msymbol = |
ad3bbd48 MS |
232 | lookup_minimal_symbol_by_pc (vt_address); |
233 | ||
9cb709b6 TT |
234 | /* If 'symbol_print' is set, we did the work above. */ |
235 | if (!options->symbol_print | |
7cbd4a93 | 236 | && (msymbol.minsym != NULL) |
77e371c0 | 237 | && (vt_address == BMSYMBOL_VALUE_ADDRESS (msymbol))) |
373a8247 | 238 | { |
b012acdd TT |
239 | if (want_space) |
240 | fputs_filtered (" ", stream); | |
241 | fputs_filtered ("<", stream); | |
efd66ac6 | 242 | fputs_filtered (MSYMBOL_PRINT_NAME (msymbol.minsym), stream); |
e13eedd5 | 243 | fputs_filtered (">", stream); |
b012acdd | 244 | want_space = 1; |
373a8247 | 245 | } |
e13eedd5 | 246 | if (vt_address && options->vtblprint) |
373a8247 | 247 | { |
e13eedd5 | 248 | struct value *vt_val; |
be903358 | 249 | struct symbol *wsym = NULL; |
e13eedd5 | 250 | struct type *wtype; |
373a8247 | 251 | |
b012acdd TT |
252 | if (want_space) |
253 | fputs_filtered (" ", stream); | |
254 | ||
7cbd4a93 | 255 | if (msymbol.minsym != NULL) |
de63c46b PA |
256 | { |
257 | const char *search_name | |
258 | = MSYMBOL_SEARCH_NAME (msymbol.minsym); | |
582942f4 | 259 | wsym = lookup_symbol_search_name (search_name, NULL, |
de63c46b PA |
260 | VAR_DOMAIN).symbol; |
261 | } | |
e13eedd5 PM |
262 | |
263 | if (wsym) | |
373a8247 | 264 | { |
e13eedd5 | 265 | wtype = SYMBOL_TYPE (wsym); |
373a8247 | 266 | } |
e13eedd5 | 267 | else |
373a8247 | 268 | { |
e13eedd5 PM |
269 | wtype = TYPE_TARGET_TYPE (type); |
270 | } | |
271 | vt_val = value_at (wtype, vt_address); | |
272 | common_val_print (vt_val, stream, recurse + 1, options, | |
273 | current_language); | |
2a998fc0 | 274 | if (options->prettyformat) |
e13eedd5 PM |
275 | { |
276 | fprintf_filtered (stream, "\n"); | |
277 | print_spaces_filtered (2 + 2 * recurse, stream); | |
373a8247 PM |
278 | } |
279 | } | |
373a8247 | 280 | } |
e13eedd5 | 281 | |
d3eab38a | 282 | return; |
373a8247 | 283 | |
373a8247 | 284 | case TYPE_CODE_REF: |
e88acd96 TT |
285 | case TYPE_CODE_ENUM: |
286 | case TYPE_CODE_FLAGS: | |
287 | case TYPE_CODE_FUNC: | |
288 | case TYPE_CODE_RANGE: | |
289 | case TYPE_CODE_INT: | |
290 | case TYPE_CODE_FLT: | |
291 | case TYPE_CODE_VOID: | |
292 | case TYPE_CODE_ERROR: | |
293 | case TYPE_CODE_UNDEF: | |
294 | case TYPE_CODE_BOOL: | |
295 | case TYPE_CODE_CHAR: | |
e8b24d9f | 296 | generic_val_print (type, embedded_offset, address, |
e88acd96 TT |
297 | stream, recurse, original_value, options, |
298 | &p_decorations); | |
373a8247 PM |
299 | break; |
300 | ||
301 | case TYPE_CODE_UNION: | |
79a45b7d | 302 | if (recurse && !options->unionprint) |
373a8247 PM |
303 | { |
304 | fprintf_filtered (stream, "{...}"); | |
305 | break; | |
306 | } | |
307 | /* Fall through. */ | |
308 | case TYPE_CODE_STRUCT: | |
79a45b7d | 309 | if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type)) |
373a8247 PM |
310 | { |
311 | /* Print the unmangled name if desired. */ | |
312 | /* Print vtable entry - we only get here if NOT using | |
0df8b418 | 313 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */ |
b276f1bb AC |
314 | /* Extract the address, assume that it is unsigned. */ |
315 | print_address_demangle | |
edf0c1b7 | 316 | (options, gdbarch, |
3e43a32a MS |
317 | extract_unsigned_integer (valaddr + embedded_offset |
318 | + TYPE_FIELD_BITPOS (type, | |
319 | VTBL_FNADDR_OFFSET) / 8, | |
320 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, | |
321 | VTBL_FNADDR_OFFSET)), | |
322 | byte_order), | |
b276f1bb | 323 | stream, demangle); |
373a8247 PM |
324 | } |
325 | else | |
326 | { | |
5598ce11 | 327 | if (is_pascal_string_type (type, &length_pos, &length_size, |
6c7a06a3 | 328 | &string_pos, &char_type, NULL)) |
373a8247 | 329 | { |
3e43a32a MS |
330 | len = extract_unsigned_integer (valaddr + embedded_offset |
331 | + length_pos, length_size, | |
332 | byte_order); | |
6ced1581 | 333 | LA_PRINT_STRING (stream, char_type, |
be759fcf PM |
334 | valaddr + embedded_offset + string_pos, |
335 | len, NULL, 0, options); | |
373a8247 PM |
336 | } |
337 | else | |
490f124f | 338 | pascal_object_print_value_fields (type, valaddr, embedded_offset, |
3e43a32a MS |
339 | address, stream, recurse, |
340 | original_value, options, | |
341 | NULL, 0); | |
373a8247 PM |
342 | } |
343 | break; | |
344 | ||
373a8247 PM |
345 | case TYPE_CODE_SET: |
346 | elttype = TYPE_INDEX_TYPE (type); | |
f168693b | 347 | elttype = check_typedef (elttype); |
74a9bb82 | 348 | if (TYPE_STUB (elttype)) |
373a8247 PM |
349 | { |
350 | fprintf_filtered (stream, "<incomplete type>"); | |
373a8247 PM |
351 | break; |
352 | } | |
353 | else | |
354 | { | |
355 | struct type *range = elttype; | |
356 | LONGEST low_bound, high_bound; | |
373a8247 PM |
357 | int need_comma = 0; |
358 | ||
6b1755ce | 359 | fputs_filtered ("[", stream); |
373a8247 | 360 | |
b926417a | 361 | int bound_info = get_discrete_bounds (range, &low_bound, &high_bound); |
7a081a30 PM |
362 | if (low_bound == 0 && high_bound == -1 && TYPE_LENGTH (type) > 0) |
363 | { | |
364 | /* If we know the size of the set type, we can figure out the | |
365 | maximum value. */ | |
b926417a | 366 | bound_info = 0; |
7a081a30 PM |
367 | high_bound = TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1; |
368 | TYPE_HIGH_BOUND (range) = high_bound; | |
369 | } | |
373a8247 | 370 | maybe_bad_bstring: |
b926417a | 371 | if (bound_info < 0) |
373a8247 PM |
372 | { |
373 | fputs_filtered ("<error value>", stream); | |
374 | goto done; | |
375 | } | |
376 | ||
377 | for (i = low_bound; i <= high_bound; i++) | |
378 | { | |
3e43a32a MS |
379 | int element = value_bit_index (type, |
380 | valaddr + embedded_offset, i); | |
ad3bbd48 | 381 | |
373a8247 PM |
382 | if (element < 0) |
383 | { | |
384 | i = element; | |
385 | goto maybe_bad_bstring; | |
386 | } | |
6b1755ce | 387 | if (element) |
373a8247 PM |
388 | { |
389 | if (need_comma) | |
390 | fputs_filtered (", ", stream); | |
391 | print_type_scalar (range, i, stream); | |
392 | need_comma = 1; | |
393 | ||
3e43a32a MS |
394 | if (i + 1 <= high_bound |
395 | && value_bit_index (type, | |
396 | valaddr + embedded_offset, ++i)) | |
373a8247 PM |
397 | { |
398 | int j = i; | |
ad3bbd48 | 399 | |
373a8247 PM |
400 | fputs_filtered ("..", stream); |
401 | while (i + 1 <= high_bound | |
3e43a32a MS |
402 | && value_bit_index (type, |
403 | valaddr + embedded_offset, | |
404 | ++i)) | |
373a8247 PM |
405 | j = i; |
406 | print_type_scalar (range, j, stream); | |
407 | } | |
408 | } | |
409 | } | |
410 | done: | |
6b1755ce | 411 | fputs_filtered ("]", stream); |
373a8247 PM |
412 | } |
413 | break; | |
414 | ||
373a8247 | 415 | default: |
3e43a32a MS |
416 | error (_("Invalid pascal type code %d in symbol table."), |
417 | TYPE_CODE (type)); | |
373a8247 | 418 | } |
373a8247 PM |
419 | } |
420 | \f | |
8e069a98 | 421 | void |
79a45b7d TT |
422 | pascal_value_print (struct value *val, struct ui_file *stream, |
423 | const struct value_print_options *options) | |
373a8247 | 424 | { |
df407dfe | 425 | struct type *type = value_type (val); |
278582cb PM |
426 | struct value_print_options opts = *options; |
427 | ||
428 | opts.deref_ref = 1; | |
373a8247 PM |
429 | |
430 | /* If it is a pointer, indicate what it points to. | |
431 | ||
432 | Print type also if it is a reference. | |
433 | ||
434 | Object pascal: if it is a member pointer, we will take care | |
435 | of that when we print it. */ | |
b20a3440 PM |
436 | if (TYPE_CODE (type) == TYPE_CODE_PTR |
437 | || TYPE_CODE (type) == TYPE_CODE_REF) | |
373a8247 PM |
438 | { |
439 | /* Hack: remove (char *) for char strings. Their | |
0df8b418 | 440 | type is indicated by the quoted string anyway. */ |
6ced1581 | 441 | if (TYPE_CODE (type) == TYPE_CODE_PTR |
b20a3440 PM |
442 | && TYPE_NAME (type) == NULL |
443 | && TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL | |
6314a349 | 444 | && strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0) |
373a8247 | 445 | { |
0df8b418 | 446 | /* Print nothing. */ |
373a8247 PM |
447 | } |
448 | else | |
449 | { | |
450 | fprintf_filtered (stream, "("); | |
451 | type_print (type, "", stream, -1); | |
452 | fprintf_filtered (stream, ") "); | |
453 | } | |
454 | } | |
8e069a98 | 455 | common_val_print (val, stream, 0, &opts, current_language); |
373a8247 PM |
456 | } |
457 | ||
458 | ||
920d2a44 AC |
459 | static void |
460 | show_pascal_static_field_print (struct ui_file *file, int from_tty, | |
461 | struct cmd_list_element *c, const char *value) | |
462 | { | |
463 | fprintf_filtered (file, _("Printing of pascal static members is %s.\n"), | |
464 | value); | |
465 | } | |
373a8247 PM |
466 | |
467 | static struct obstack dont_print_vb_obstack; | |
468 | static struct obstack dont_print_statmem_obstack; | |
469 | ||
806048c6 | 470 | static void pascal_object_print_static_field (struct value *, |
79a45b7d TT |
471 | struct ui_file *, int, |
472 | const struct value_print_options *); | |
373a8247 | 473 | |
fc1a4b47 | 474 | static void pascal_object_print_value (struct type *, const gdb_byte *, |
6b850546 | 475 | LONGEST, |
79a45b7d | 476 | CORE_ADDR, struct ui_file *, int, |
e8b24d9f | 477 | struct value *, |
79a45b7d | 478 | const struct value_print_options *, |
a2bd3dcd | 479 | struct type **); |
373a8247 | 480 | |
373a8247 PM |
481 | /* It was changed to this after 2.4.5. */ |
482 | const char pascal_vtbl_ptr_name[] = | |
483 | {'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; | |
484 | ||
485 | /* Return truth value for assertion that TYPE is of the type | |
486 | "pointer to virtual function". */ | |
487 | ||
488 | int | |
fba45db2 | 489 | pascal_object_is_vtbl_ptr_type (struct type *type) |
373a8247 | 490 | { |
a737d952 | 491 | const char *type_name = TYPE_NAME (type); |
373a8247 | 492 | |
fe978cb0 PA |
493 | return (type_name != NULL |
494 | && strcmp (type_name, pascal_vtbl_ptr_name) == 0); | |
373a8247 PM |
495 | } |
496 | ||
497 | /* Return truth value for the assertion that TYPE is of the type | |
498 | "pointer to virtual function table". */ | |
499 | ||
500 | int | |
fba45db2 | 501 | pascal_object_is_vtbl_member (struct type *type) |
373a8247 PM |
502 | { |
503 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
504 | { | |
505 | type = TYPE_TARGET_TYPE (type); | |
506 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
507 | { | |
508 | type = TYPE_TARGET_TYPE (type); | |
0df8b418 MS |
509 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* If not using |
510 | thunks. */ | |
511 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* If using thunks. */ | |
373a8247 PM |
512 | { |
513 | /* Virtual functions tables are full of pointers | |
0df8b418 | 514 | to virtual functions. */ |
373a8247 PM |
515 | return pascal_object_is_vtbl_ptr_type (type); |
516 | } | |
517 | } | |
518 | } | |
519 | return 0; | |
520 | } | |
521 | ||
a2bd3dcd AC |
522 | /* Mutually recursive subroutines of pascal_object_print_value and |
523 | c_val_print to print out a structure's fields: | |
524 | pascal_object_print_value_fields and pascal_object_print_value. | |
373a8247 | 525 | |
79a45b7d | 526 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and OPTIONS have the |
373a8247 PM |
527 | same meanings as in pascal_object_print_value and c_val_print. |
528 | ||
529 | DONT_PRINT is an array of baseclass types that we | |
530 | should not print, or zero if called from top level. */ | |
531 | ||
532 | void | |
fc1a4b47 | 533 | pascal_object_print_value_fields (struct type *type, const gdb_byte *valaddr, |
6b850546 | 534 | LONGEST offset, |
fba45db2 | 535 | CORE_ADDR address, struct ui_file *stream, |
79a45b7d | 536 | int recurse, |
e8b24d9f | 537 | struct value *val, |
79a45b7d | 538 | const struct value_print_options *options, |
fba45db2 KB |
539 | struct type **dont_print_vb, |
540 | int dont_print_statmem) | |
373a8247 PM |
541 | { |
542 | int i, len, n_baseclasses; | |
79f33898 SM |
543 | char *last_dont_print |
544 | = (char *) obstack_next_free (&dont_print_statmem_obstack); | |
373a8247 | 545 | |
f168693b | 546 | type = check_typedef (type); |
373a8247 PM |
547 | |
548 | fprintf_filtered (stream, "{"); | |
549 | len = TYPE_NFIELDS (type); | |
550 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
551 | ||
552 | /* Print out baseclasses such that we don't print | |
553 | duplicates of virtual baseclasses. */ | |
554 | if (n_baseclasses > 0) | |
490f124f PA |
555 | pascal_object_print_value (type, valaddr, offset, address, |
556 | stream, recurse + 1, val, | |
557 | options, dont_print_vb); | |
373a8247 PM |
558 | |
559 | if (!len && n_baseclasses == 1) | |
560 | fprintf_filtered (stream, "<No data fields>"); | |
561 | else | |
562 | { | |
c1b6e682 | 563 | struct obstack tmp_obstack = dont_print_statmem_obstack; |
373a8247 PM |
564 | int fields_seen = 0; |
565 | ||
566 | if (dont_print_statmem == 0) | |
567 | { | |
568 | /* If we're at top level, carve out a completely fresh | |
569 | chunk of the obstack and use that until this particular | |
570 | invocation returns. */ | |
373a8247 PM |
571 | obstack_finish (&dont_print_statmem_obstack); |
572 | } | |
573 | ||
574 | for (i = n_baseclasses; i < len; i++) | |
575 | { | |
576 | /* If requested, skip printing of static fields. */ | |
79a45b7d | 577 | if (!options->pascal_static_field_print |
d6a843b5 | 578 | && field_is_static (&TYPE_FIELD (type, i))) |
373a8247 PM |
579 | continue; |
580 | if (fields_seen) | |
581 | fprintf_filtered (stream, ", "); | |
582 | else if (n_baseclasses > 0) | |
583 | { | |
2a998fc0 | 584 | if (options->prettyformat) |
373a8247 PM |
585 | { |
586 | fprintf_filtered (stream, "\n"); | |
587 | print_spaces_filtered (2 + 2 * recurse, stream); | |
588 | fputs_filtered ("members of ", stream); | |
a737d952 | 589 | fputs_filtered (TYPE_NAME (type), stream); |
373a8247 PM |
590 | fputs_filtered (": ", stream); |
591 | } | |
592 | } | |
593 | fields_seen = 1; | |
594 | ||
2a998fc0 | 595 | if (options->prettyformat) |
373a8247 PM |
596 | { |
597 | fprintf_filtered (stream, "\n"); | |
598 | print_spaces_filtered (2 + 2 * recurse, stream); | |
599 | } | |
600 | else | |
601 | { | |
602 | wrap_here (n_spaces (2 + 2 * recurse)); | |
603 | } | |
e93a8774 TT |
604 | |
605 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
606 | ||
607 | if (field_is_static (&TYPE_FIELD (type, i))) | |
608 | fputs_filtered ("static ", stream); | |
609 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
610 | language_cplus, | |
611 | DMGL_PARAMS | DMGL_ANSI); | |
612 | annotate_field_name_end (); | |
613 | fputs_filtered (" = ", stream); | |
614 | annotate_field_value (); | |
373a8247 | 615 | |
d6a843b5 JK |
616 | if (!field_is_static (&TYPE_FIELD (type, i)) |
617 | && TYPE_FIELD_PACKED (type, i)) | |
373a8247 | 618 | { |
6943961c | 619 | struct value *v; |
373a8247 PM |
620 | |
621 | /* Bitfields require special handling, especially due to byte | |
622 | order problems. */ | |
623 | if (TYPE_FIELD_IGNORE (type, i)) | |
624 | { | |
625 | fputs_filtered ("<optimized out or zero length>", stream); | |
626 | } | |
8cf6f0b1 TT |
627 | else if (value_bits_synthetic_pointer (val, |
628 | TYPE_FIELD_BITPOS (type, | |
629 | i), | |
630 | TYPE_FIELD_BITSIZE (type, | |
631 | i))) | |
632 | { | |
633 | fputs_filtered (_("<synthetic pointer>"), stream); | |
634 | } | |
373a8247 PM |
635 | else |
636 | { | |
79a45b7d | 637 | struct value_print_options opts = *options; |
ad3bbd48 | 638 | |
5467c6c8 | 639 | v = value_field_bitfield (type, i, valaddr, offset, val); |
373a8247 | 640 | |
79a45b7d TT |
641 | opts.deref_ref = 0; |
642 | common_val_print (v, stream, recurse + 1, &opts, | |
643 | current_language); | |
373a8247 PM |
644 | } |
645 | } | |
646 | else | |
647 | { | |
648 | if (TYPE_FIELD_IGNORE (type, i)) | |
649 | { | |
650 | fputs_filtered ("<optimized out or zero length>", stream); | |
651 | } | |
d6a843b5 | 652 | else if (field_is_static (&TYPE_FIELD (type, i))) |
373a8247 | 653 | { |
3e43a32a | 654 | /* struct value *v = value_static_field (type, i); |
0df8b418 | 655 | v4.17 specific. */ |
6943961c | 656 | struct value *v; |
ad3bbd48 | 657 | |
5467c6c8 | 658 | v = value_field_bitfield (type, i, valaddr, offset, val); |
373a8247 PM |
659 | |
660 | if (v == NULL) | |
901461f8 | 661 | val_print_optimized_out (NULL, stream); |
373a8247 | 662 | else |
79a45b7d TT |
663 | pascal_object_print_static_field (v, stream, recurse + 1, |
664 | options); | |
373a8247 PM |
665 | } |
666 | else | |
667 | { | |
79a45b7d | 668 | struct value_print_options opts = *options; |
ad3bbd48 | 669 | |
79a45b7d | 670 | opts.deref_ref = 0; |
373a8247 PM |
671 | /* val_print (TYPE_FIELD_TYPE (type, i), |
672 | valaddr + TYPE_FIELD_BITPOS (type, i) / 8, | |
673 | address + TYPE_FIELD_BITPOS (type, i) / 8, 0, | |
674 | stream, format, 0, recurse + 1, pretty); */ | |
675 | val_print (TYPE_FIELD_TYPE (type, i), | |
e8b24d9f | 676 | offset + TYPE_FIELD_BITPOS (type, i) / 8, |
490f124f | 677 | address, stream, recurse + 1, val, &opts, |
d8ca156b | 678 | current_language); |
373a8247 PM |
679 | } |
680 | } | |
681 | annotate_field_end (); | |
682 | } | |
683 | ||
684 | if (dont_print_statmem == 0) | |
685 | { | |
686 | /* Free the space used to deal with the printing | |
687 | of the members from top level. */ | |
688 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
689 | dont_print_statmem_obstack = tmp_obstack; | |
690 | } | |
691 | ||
2a998fc0 | 692 | if (options->prettyformat) |
373a8247 PM |
693 | { |
694 | fprintf_filtered (stream, "\n"); | |
695 | print_spaces_filtered (2 * recurse, stream); | |
696 | } | |
697 | } | |
698 | fprintf_filtered (stream, "}"); | |
699 | } | |
700 | ||
701 | /* Special val_print routine to avoid printing multiple copies of virtual | |
702 | baseclasses. */ | |
703 | ||
7080f20f | 704 | static void |
fc1a4b47 | 705 | pascal_object_print_value (struct type *type, const gdb_byte *valaddr, |
6b850546 | 706 | LONGEST offset, |
a2bd3dcd | 707 | CORE_ADDR address, struct ui_file *stream, |
79a45b7d | 708 | int recurse, |
e8b24d9f | 709 | struct value *val, |
79a45b7d | 710 | const struct value_print_options *options, |
fba45db2 | 711 | struct type **dont_print_vb) |
373a8247 | 712 | { |
373a8247 | 713 | struct type **last_dont_print |
ad3bbd48 | 714 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); |
c1b6e682 | 715 | struct obstack tmp_obstack = dont_print_vb_obstack; |
373a8247 PM |
716 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); |
717 | ||
718 | if (dont_print_vb == 0) | |
719 | { | |
720 | /* If we're at top level, carve out a completely fresh | |
721 | chunk of the obstack and use that until this particular | |
722 | invocation returns. */ | |
373a8247 PM |
723 | /* Bump up the high-water mark. Now alpha is omega. */ |
724 | obstack_finish (&dont_print_vb_obstack); | |
725 | } | |
726 | ||
727 | for (i = 0; i < n_baseclasses; i++) | |
728 | { | |
6b850546 | 729 | LONGEST boffset = 0; |
373a8247 | 730 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); |
a737d952 | 731 | const char *basename = TYPE_NAME (baseclass); |
8af8e3bc | 732 | const gdb_byte *base_valaddr = NULL; |
6b850546 | 733 | LONGEST thisoffset; |
8af8e3bc | 734 | int skip = 0; |
49663d05 | 735 | gdb::byte_vector buf; |
373a8247 PM |
736 | |
737 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
738 | { | |
739 | struct type **first_dont_print | |
ad3bbd48 | 740 | = (struct type **) obstack_base (&dont_print_vb_obstack); |
373a8247 PM |
741 | |
742 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) | |
ad3bbd48 | 743 | - first_dont_print; |
373a8247 PM |
744 | |
745 | while (--j >= 0) | |
746 | if (baseclass == first_dont_print[j]) | |
747 | goto flush_it; | |
748 | ||
749 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
750 | } | |
751 | ||
490f124f PA |
752 | thisoffset = offset; |
753 | ||
a70b8144 | 754 | try |
8af8e3bc PA |
755 | { |
756 | boffset = baseclass_offset (type, i, valaddr, offset, address, val); | |
757 | } | |
230d2906 | 758 | catch (const gdb_exception_error &ex) |
8af8e3bc | 759 | { |
7556d4a4 PA |
760 | if (ex.error == NOT_AVAILABLE_ERROR) |
761 | skip = -1; | |
762 | else | |
763 | skip = 1; | |
764 | } | |
8af8e3bc | 765 | |
7556d4a4 PA |
766 | if (skip == 0) |
767 | { | |
8af8e3bc PA |
768 | /* The virtual base class pointer might have been clobbered by the |
769 | user program. Make sure that it still points to a valid memory | |
770 | location. */ | |
771 | ||
772 | if (boffset < 0 || boffset >= TYPE_LENGTH (type)) | |
773 | { | |
49663d05 | 774 | buf.resize (TYPE_LENGTH (baseclass)); |
6c18f3e0 | 775 | |
49663d05 TT |
776 | base_valaddr = buf.data (); |
777 | if (target_read_memory (address + boffset, buf.data (), | |
8af8e3bc PA |
778 | TYPE_LENGTH (baseclass)) != 0) |
779 | skip = 1; | |
780 | address = address + boffset; | |
781 | thisoffset = 0; | |
782 | boffset = 0; | |
783 | } | |
784 | else | |
785 | base_valaddr = valaddr; | |
786 | } | |
373a8247 | 787 | |
2a998fc0 | 788 | if (options->prettyformat) |
373a8247 PM |
789 | { |
790 | fprintf_filtered (stream, "\n"); | |
791 | print_spaces_filtered (2 * recurse, stream); | |
792 | } | |
793 | fputs_filtered ("<", stream); | |
794 | /* Not sure what the best notation is in the case where there is no | |
795 | baseclass name. */ | |
796 | ||
797 | fputs_filtered (basename ? basename : "", stream); | |
798 | fputs_filtered ("> = ", stream); | |
799 | ||
8af8e3bc PA |
800 | if (skip < 0) |
801 | val_print_unavailable (stream); | |
802 | else if (skip > 0) | |
803 | val_print_invalid_address (stream); | |
373a8247 | 804 | else |
3e43a32a | 805 | pascal_object_print_value_fields (baseclass, base_valaddr, |
490f124f PA |
806 | thisoffset + boffset, address, |
807 | stream, recurse, val, options, | |
373a8247 PM |
808 | (struct type **) obstack_base (&dont_print_vb_obstack), |
809 | 0); | |
810 | fputs_filtered (", ", stream); | |
811 | ||
812 | flush_it: | |
813 | ; | |
814 | } | |
815 | ||
816 | if (dont_print_vb == 0) | |
817 | { | |
818 | /* Free the space used to deal with the printing | |
819 | of this type from top level. */ | |
820 | obstack_free (&dont_print_vb_obstack, last_dont_print); | |
821 | /* Reset watermark so that we can continue protecting | |
822 | ourselves from whatever we were protecting ourselves. */ | |
823 | dont_print_vb_obstack = tmp_obstack; | |
824 | } | |
825 | } | |
826 | ||
827 | /* Print value of a static member. | |
828 | To avoid infinite recursion when printing a class that contains | |
829 | a static instance of the class, we keep the addresses of all printed | |
830 | static member classes in an obstack and refuse to print them more | |
831 | than once. | |
832 | ||
79a45b7d | 833 | VAL contains the value to print, STREAM, RECURSE, and OPTIONS |
373a8247 PM |
834 | have the same meanings as in c_val_print. */ |
835 | ||
836 | static void | |
806048c6 | 837 | pascal_object_print_static_field (struct value *val, |
79a45b7d TT |
838 | struct ui_file *stream, |
839 | int recurse, | |
840 | const struct value_print_options *options) | |
373a8247 | 841 | { |
806048c6 | 842 | struct type *type = value_type (val); |
79a45b7d | 843 | struct value_print_options opts; |
806048c6 | 844 | |
686d4def PA |
845 | if (value_entirely_optimized_out (val)) |
846 | { | |
847 | val_print_optimized_out (val, stream); | |
848 | return; | |
849 | } | |
850 | ||
373a8247 PM |
851 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
852 | { | |
42ae5230 | 853 | CORE_ADDR *first_dont_print, addr; |
373a8247 PM |
854 | int i; |
855 | ||
856 | first_dont_print | |
857 | = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); | |
858 | i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) | |
859 | - first_dont_print; | |
860 | ||
861 | while (--i >= 0) | |
862 | { | |
42ae5230 | 863 | if (value_address (val) == first_dont_print[i]) |
373a8247 | 864 | { |
3e43a32a MS |
865 | fputs_filtered ("\ |
866 | <same as static member of an already seen type>", | |
373a8247 PM |
867 | stream); |
868 | return; | |
869 | } | |
870 | } | |
871 | ||
42ae5230 TT |
872 | addr = value_address (val); |
873 | obstack_grow (&dont_print_statmem_obstack, (char *) &addr, | |
373a8247 PM |
874 | sizeof (CORE_ADDR)); |
875 | ||
f168693b | 876 | type = check_typedef (type); |
490f124f PA |
877 | pascal_object_print_value_fields (type, |
878 | value_contents_for_printing (val), | |
879 | value_embedded_offset (val), | |
880 | addr, | |
881 | stream, recurse, | |
882 | val, options, NULL, 1); | |
373a8247 PM |
883 | return; |
884 | } | |
79a45b7d TT |
885 | |
886 | opts = *options; | |
887 | opts.deref_ref = 0; | |
888 | common_val_print (val, stream, recurse, &opts, current_language); | |
373a8247 PM |
889 | } |
890 | ||
373a8247 | 891 | void |
fba45db2 | 892 | _initialize_pascal_valprint (void) |
373a8247 | 893 | { |
5bf193a2 | 894 | add_setshow_boolean_cmd ("pascal_static-members", class_support, |
79a45b7d | 895 | &user_print_options.pascal_static_field_print, _("\ |
5bf193a2 AC |
896 | Set printing of pascal static members."), _("\ |
897 | Show printing of pascal static members."), NULL, | |
898 | NULL, | |
920d2a44 | 899 | show_pascal_static_field_print, |
5bf193a2 | 900 | &setprintlist, &showprintlist); |
373a8247 | 901 | } |