Commit | Line | Data |
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373a8247 | 1 | /* Support for printing Pascal values for GDB, the GNU debugger. |
5bcca90b | 2 | |
b811d2c2 | 3 | Copyright (C) 2000-2020 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" |
7f6aba03 | 42 | #include "cli/cli-style.h" |
373a8247 PM |
43 | \f |
44 | ||
1e592a8a TT |
45 | static void pascal_object_print_value_fields (struct type *, const gdb_byte *, |
46 | LONGEST, | |
47 | CORE_ADDR, struct ui_file *, | |
48 | int, | |
49 | struct value *, | |
50 | const struct value_print_options *, | |
51 | struct type **, int); | |
52 | ||
e88acd96 TT |
53 | /* Decorations for Pascal. */ |
54 | ||
55 | static const struct generic_val_print_decorations p_decorations = | |
56 | { | |
57 | "", | |
58 | " + ", | |
59 | " * I", | |
60 | "true", | |
61 | "false", | |
00272ec4 TT |
62 | "void", |
63 | "{", | |
64 | "}" | |
e88acd96 TT |
65 | }; |
66 | ||
32b72a42 | 67 | /* See val_print for a description of the various parameters of this |
d3eab38a | 68 | function; they are identical. */ |
373a8247 | 69 | |
d3eab38a | 70 | void |
e8b24d9f | 71 | pascal_val_print (struct type *type, |
a2bd3dcd | 72 | int embedded_offset, CORE_ADDR address, |
79a45b7d | 73 | struct ui_file *stream, int recurse, |
e8b24d9f | 74 | struct value *original_value, |
79a45b7d | 75 | const struct value_print_options *options) |
373a8247 | 76 | { |
5af949e3 | 77 | struct gdbarch *gdbarch = get_type_arch (type); |
34877895 | 78 | enum bfd_endian byte_order = type_byte_order (type); |
52f0bd74 | 79 | unsigned int i = 0; /* Number of characters printed */ |
373a8247 PM |
80 | unsigned len; |
81 | struct type *elttype; | |
82 | unsigned eltlen; | |
5598ce11 | 83 | int length_pos, length_size, string_pos; |
6c7a06a3 | 84 | struct type *char_type; |
373a8247 | 85 | CORE_ADDR addr; |
b012acdd | 86 | int want_space = 0; |
e8b24d9f | 87 | const gdb_byte *valaddr = value_contents_for_printing (original_value); |
373a8247 | 88 | |
f168693b | 89 | type = check_typedef (type); |
373a8247 PM |
90 | switch (TYPE_CODE (type)) |
91 | { | |
92 | case TYPE_CODE_ARRAY: | |
b926417a TT |
93 | { |
94 | LONGEST low_bound, high_bound; | |
373a8247 | 95 | |
b926417a TT |
96 | if (get_array_bounds (type, &low_bound, &high_bound)) |
97 | { | |
98 | len = high_bound - low_bound + 1; | |
99 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
100 | eltlen = TYPE_LENGTH (elttype); | |
101 | if (options->prettyformat_arrays) | |
102 | { | |
103 | print_spaces_filtered (2 + 2 * recurse, stream); | |
104 | } | |
105 | /* If 's' format is used, try to print out as string. | |
106 | If no format is given, print as string if element type | |
107 | is of TYPE_CODE_CHAR and element size is 1,2 or 4. */ | |
108 | if (options->format == 's' | |
109 | || ((eltlen == 1 || eltlen == 2 || eltlen == 4) | |
110 | && TYPE_CODE (elttype) == TYPE_CODE_CHAR | |
111 | && options->format == 0)) | |
112 | { | |
113 | /* If requested, look for the first null char and only print | |
114 | elements up to it. */ | |
115 | if (options->stop_print_at_null) | |
116 | { | |
117 | unsigned int temp_len; | |
118 | ||
119 | /* Look for a NULL char. */ | |
120 | for (temp_len = 0; | |
121 | extract_unsigned_integer (valaddr + embedded_offset + | |
122 | temp_len * eltlen, eltlen, | |
123 | byte_order) | |
124 | && temp_len < len && temp_len < options->print_max; | |
125 | temp_len++); | |
126 | len = temp_len; | |
127 | } | |
128 | ||
129 | LA_PRINT_STRING (stream, TYPE_TARGET_TYPE (type), | |
130 | valaddr + embedded_offset, len, NULL, 0, | |
131 | options); | |
132 | i = len; | |
133 | } | |
134 | else | |
135 | { | |
136 | fprintf_filtered (stream, "{"); | |
137 | /* If this is a virtual function table, print the 0th | |
138 | entry specially, and the rest of the members normally. */ | |
139 | if (pascal_object_is_vtbl_ptr_type (elttype)) | |
140 | { | |
141 | i = 1; | |
142 | fprintf_filtered (stream, "%d vtable entries", len - 1); | |
143 | } | |
144 | else | |
145 | { | |
146 | i = 0; | |
147 | } | |
148 | val_print_array_elements (type, embedded_offset, | |
149 | address, stream, recurse, | |
150 | original_value, options, i); | |
151 | fprintf_filtered (stream, "}"); | |
152 | } | |
153 | break; | |
154 | } | |
155 | /* Array of unspecified length: treat like pointer to first elt. */ | |
156 | addr = address + embedded_offset; | |
157 | } | |
373a8247 PM |
158 | goto print_unpacked_pointer; |
159 | ||
160 | case TYPE_CODE_PTR: | |
79a45b7d | 161 | if (options->format && options->format != 's') |
373a8247 | 162 | { |
e8b24d9f | 163 | val_print_scalar_formatted (type, embedded_offset, |
ab2188aa | 164 | original_value, options, 0, stream); |
373a8247 PM |
165 | break; |
166 | } | |
79a45b7d | 167 | if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type)) |
373a8247 PM |
168 | { |
169 | /* Print the unmangled name if desired. */ | |
170 | /* Print vtable entry - we only get here if we ARE using | |
0df8b418 | 171 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */ |
b276f1bb | 172 | /* Extract the address, assume that it is unsigned. */ |
e17a4113 UW |
173 | addr = extract_unsigned_integer (valaddr + embedded_offset, |
174 | TYPE_LENGTH (type), byte_order); | |
edf0c1b7 | 175 | print_address_demangle (options, gdbarch, addr, stream, demangle); |
373a8247 PM |
176 | break; |
177 | } | |
91e8df85 | 178 | check_typedef (TYPE_TARGET_TYPE (type)); |
e13eedd5 PM |
179 | |
180 | addr = unpack_pointer (type, valaddr + embedded_offset); | |
181 | print_unpacked_pointer: | |
182 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
183 | ||
184 | if (TYPE_CODE (elttype) == TYPE_CODE_FUNC) | |
373a8247 | 185 | { |
e13eedd5 | 186 | /* Try to print what function it points to. */ |
edf0c1b7 | 187 | print_address_demangle (options, gdbarch, addr, stream, demangle); |
d3eab38a | 188 | return; |
e13eedd5 | 189 | } |
373a8247 | 190 | |
e13eedd5 PM |
191 | if (options->addressprint && options->format != 's') |
192 | { | |
193 | fputs_filtered (paddress (gdbarch, addr), stream); | |
b012acdd | 194 | want_space = 1; |
e13eedd5 | 195 | } |
373a8247 | 196 | |
e13eedd5 PM |
197 | /* For a pointer to char or unsigned char, also print the string |
198 | pointed to, unless pointer is null. */ | |
199 | if (((TYPE_LENGTH (elttype) == 1 | |
200 | && (TYPE_CODE (elttype) == TYPE_CODE_INT | |
201 | || TYPE_CODE (elttype) == TYPE_CODE_CHAR)) | |
202 | || ((TYPE_LENGTH (elttype) == 2 || TYPE_LENGTH (elttype) == 4) | |
203 | && TYPE_CODE (elttype) == TYPE_CODE_CHAR)) | |
204 | && (options->format == 0 || options->format == 's') | |
205 | && addr != 0) | |
206 | { | |
b012acdd TT |
207 | if (want_space) |
208 | fputs_filtered (" ", stream); | |
0df8b418 | 209 | /* No wide string yet. */ |
09ca9e2e | 210 | i = val_print_string (elttype, NULL, addr, -1, stream, options); |
e13eedd5 | 211 | } |
0df8b418 | 212 | /* Also for pointers to pascal strings. */ |
e13eedd5 PM |
213 | /* Note: this is Free Pascal specific: |
214 | as GDB does not recognize stabs pascal strings | |
215 | Pascal strings are mapped to records | |
0df8b418 | 216 | with lowercase names PM. */ |
e13eedd5 PM |
217 | if (is_pascal_string_type (elttype, &length_pos, &length_size, |
218 | &string_pos, &char_type, NULL) | |
219 | && addr != 0) | |
220 | { | |
221 | ULONGEST string_length; | |
7c543f7b | 222 | gdb_byte *buffer; |
ad3bbd48 | 223 | |
b012acdd TT |
224 | if (want_space) |
225 | fputs_filtered (" ", stream); | |
7c543f7b | 226 | buffer = (gdb_byte *) xmalloc (length_size); |
e13eedd5 PM |
227 | read_memory (addr + length_pos, buffer, length_size); |
228 | string_length = extract_unsigned_integer (buffer, length_size, | |
229 | byte_order); | |
230 | xfree (buffer); | |
09ca9e2e TT |
231 | i = val_print_string (char_type, NULL, |
232 | addr + string_pos, string_length, | |
233 | stream, options); | |
e13eedd5 PM |
234 | } |
235 | else if (pascal_object_is_vtbl_member (type)) | |
236 | { | |
0df8b418 | 237 | /* Print vtbl's nicely. */ |
3e43a32a MS |
238 | CORE_ADDR vt_address = unpack_pointer (type, |
239 | valaddr + embedded_offset); | |
7cbd4a93 | 240 | struct bound_minimal_symbol msymbol = |
ad3bbd48 MS |
241 | lookup_minimal_symbol_by_pc (vt_address); |
242 | ||
9cb709b6 TT |
243 | /* If 'symbol_print' is set, we did the work above. */ |
244 | if (!options->symbol_print | |
7cbd4a93 | 245 | && (msymbol.minsym != NULL) |
77e371c0 | 246 | && (vt_address == BMSYMBOL_VALUE_ADDRESS (msymbol))) |
373a8247 | 247 | { |
b012acdd TT |
248 | if (want_space) |
249 | fputs_filtered (" ", stream); | |
250 | fputs_filtered ("<", stream); | |
c9d95fa3 | 251 | fputs_filtered (msymbol.minsym->print_name (), stream); |
e13eedd5 | 252 | fputs_filtered (">", stream); |
b012acdd | 253 | want_space = 1; |
373a8247 | 254 | } |
e13eedd5 | 255 | if (vt_address && options->vtblprint) |
373a8247 | 256 | { |
e13eedd5 | 257 | struct value *vt_val; |
be903358 | 258 | struct symbol *wsym = NULL; |
e13eedd5 | 259 | struct type *wtype; |
373a8247 | 260 | |
b012acdd TT |
261 | if (want_space) |
262 | fputs_filtered (" ", stream); | |
263 | ||
7cbd4a93 | 264 | if (msymbol.minsym != NULL) |
de63c46b | 265 | { |
c9d95fa3 | 266 | const char *search_name = msymbol.minsym->search_name (); |
582942f4 | 267 | wsym = lookup_symbol_search_name (search_name, NULL, |
de63c46b PA |
268 | VAR_DOMAIN).symbol; |
269 | } | |
e13eedd5 PM |
270 | |
271 | if (wsym) | |
373a8247 | 272 | { |
e13eedd5 | 273 | wtype = SYMBOL_TYPE (wsym); |
373a8247 | 274 | } |
e13eedd5 | 275 | else |
373a8247 | 276 | { |
e13eedd5 PM |
277 | wtype = TYPE_TARGET_TYPE (type); |
278 | } | |
279 | vt_val = value_at (wtype, vt_address); | |
280 | common_val_print (vt_val, stream, recurse + 1, options, | |
281 | current_language); | |
2a998fc0 | 282 | if (options->prettyformat) |
e13eedd5 PM |
283 | { |
284 | fprintf_filtered (stream, "\n"); | |
285 | print_spaces_filtered (2 + 2 * recurse, stream); | |
373a8247 PM |
286 | } |
287 | } | |
373a8247 | 288 | } |
e13eedd5 | 289 | |
d3eab38a | 290 | return; |
373a8247 | 291 | |
373a8247 | 292 | case TYPE_CODE_REF: |
e88acd96 TT |
293 | case TYPE_CODE_ENUM: |
294 | case TYPE_CODE_FLAGS: | |
295 | case TYPE_CODE_FUNC: | |
296 | case TYPE_CODE_RANGE: | |
297 | case TYPE_CODE_INT: | |
298 | case TYPE_CODE_FLT: | |
299 | case TYPE_CODE_VOID: | |
300 | case TYPE_CODE_ERROR: | |
301 | case TYPE_CODE_UNDEF: | |
302 | case TYPE_CODE_BOOL: | |
303 | case TYPE_CODE_CHAR: | |
e8b24d9f | 304 | generic_val_print (type, embedded_offset, address, |
e88acd96 TT |
305 | stream, recurse, original_value, options, |
306 | &p_decorations); | |
373a8247 PM |
307 | break; |
308 | ||
309 | case TYPE_CODE_UNION: | |
79a45b7d | 310 | if (recurse && !options->unionprint) |
373a8247 PM |
311 | { |
312 | fprintf_filtered (stream, "{...}"); | |
313 | break; | |
314 | } | |
315 | /* Fall through. */ | |
316 | case TYPE_CODE_STRUCT: | |
79a45b7d | 317 | if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type)) |
373a8247 PM |
318 | { |
319 | /* Print the unmangled name if desired. */ | |
320 | /* Print vtable entry - we only get here if NOT using | |
0df8b418 | 321 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */ |
b276f1bb AC |
322 | /* Extract the address, assume that it is unsigned. */ |
323 | print_address_demangle | |
edf0c1b7 | 324 | (options, gdbarch, |
3e43a32a MS |
325 | extract_unsigned_integer (valaddr + embedded_offset |
326 | + TYPE_FIELD_BITPOS (type, | |
327 | VTBL_FNADDR_OFFSET) / 8, | |
328 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, | |
329 | VTBL_FNADDR_OFFSET)), | |
330 | byte_order), | |
b276f1bb | 331 | stream, demangle); |
373a8247 PM |
332 | } |
333 | else | |
334 | { | |
5598ce11 | 335 | if (is_pascal_string_type (type, &length_pos, &length_size, |
6c7a06a3 | 336 | &string_pos, &char_type, NULL)) |
373a8247 | 337 | { |
3e43a32a MS |
338 | len = extract_unsigned_integer (valaddr + embedded_offset |
339 | + length_pos, length_size, | |
340 | byte_order); | |
6ced1581 | 341 | LA_PRINT_STRING (stream, char_type, |
be759fcf PM |
342 | valaddr + embedded_offset + string_pos, |
343 | len, NULL, 0, options); | |
373a8247 PM |
344 | } |
345 | else | |
490f124f | 346 | pascal_object_print_value_fields (type, valaddr, embedded_offset, |
3e43a32a MS |
347 | address, stream, recurse, |
348 | original_value, options, | |
349 | NULL, 0); | |
373a8247 PM |
350 | } |
351 | break; | |
352 | ||
373a8247 PM |
353 | case TYPE_CODE_SET: |
354 | elttype = TYPE_INDEX_TYPE (type); | |
f168693b | 355 | elttype = check_typedef (elttype); |
74a9bb82 | 356 | if (TYPE_STUB (elttype)) |
373a8247 | 357 | { |
7f6aba03 | 358 | fprintf_styled (stream, metadata_style.style (), "<incomplete type>"); |
373a8247 PM |
359 | break; |
360 | } | |
361 | else | |
362 | { | |
363 | struct type *range = elttype; | |
364 | LONGEST low_bound, high_bound; | |
373a8247 PM |
365 | int need_comma = 0; |
366 | ||
6b1755ce | 367 | fputs_filtered ("[", stream); |
373a8247 | 368 | |
b926417a | 369 | int bound_info = get_discrete_bounds (range, &low_bound, &high_bound); |
7a081a30 PM |
370 | if (low_bound == 0 && high_bound == -1 && TYPE_LENGTH (type) > 0) |
371 | { | |
372 | /* If we know the size of the set type, we can figure out the | |
373 | maximum value. */ | |
b926417a | 374 | bound_info = 0; |
7a081a30 PM |
375 | high_bound = TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1; |
376 | TYPE_HIGH_BOUND (range) = high_bound; | |
377 | } | |
373a8247 | 378 | maybe_bad_bstring: |
b926417a | 379 | if (bound_info < 0) |
373a8247 | 380 | { |
7f6aba03 | 381 | fputs_styled ("<error value>", metadata_style.style (), stream); |
373a8247 PM |
382 | goto done; |
383 | } | |
384 | ||
385 | for (i = low_bound; i <= high_bound; i++) | |
386 | { | |
3e43a32a MS |
387 | int element = value_bit_index (type, |
388 | valaddr + embedded_offset, i); | |
ad3bbd48 | 389 | |
373a8247 PM |
390 | if (element < 0) |
391 | { | |
392 | i = element; | |
393 | goto maybe_bad_bstring; | |
394 | } | |
6b1755ce | 395 | if (element) |
373a8247 PM |
396 | { |
397 | if (need_comma) | |
398 | fputs_filtered (", ", stream); | |
399 | print_type_scalar (range, i, stream); | |
400 | need_comma = 1; | |
401 | ||
3e43a32a MS |
402 | if (i + 1 <= high_bound |
403 | && value_bit_index (type, | |
404 | valaddr + embedded_offset, ++i)) | |
373a8247 PM |
405 | { |
406 | int j = i; | |
ad3bbd48 | 407 | |
373a8247 PM |
408 | fputs_filtered ("..", stream); |
409 | while (i + 1 <= high_bound | |
3e43a32a MS |
410 | && value_bit_index (type, |
411 | valaddr + embedded_offset, | |
412 | ++i)) | |
373a8247 PM |
413 | j = i; |
414 | print_type_scalar (range, j, stream); | |
415 | } | |
416 | } | |
417 | } | |
418 | done: | |
6b1755ce | 419 | fputs_filtered ("]", stream); |
373a8247 PM |
420 | } |
421 | break; | |
422 | ||
373a8247 | 423 | default: |
3e43a32a MS |
424 | error (_("Invalid pascal type code %d in symbol table."), |
425 | TYPE_CODE (type)); | |
373a8247 | 426 | } |
373a8247 PM |
427 | } |
428 | \f | |
8e069a98 | 429 | void |
79a45b7d TT |
430 | pascal_value_print (struct value *val, struct ui_file *stream, |
431 | const struct value_print_options *options) | |
373a8247 | 432 | { |
df407dfe | 433 | struct type *type = value_type (val); |
278582cb PM |
434 | struct value_print_options opts = *options; |
435 | ||
436 | opts.deref_ref = 1; | |
373a8247 PM |
437 | |
438 | /* If it is a pointer, indicate what it points to. | |
439 | ||
440 | Print type also if it is a reference. | |
441 | ||
442 | Object pascal: if it is a member pointer, we will take care | |
443 | of that when we print it. */ | |
b20a3440 PM |
444 | if (TYPE_CODE (type) == TYPE_CODE_PTR |
445 | || TYPE_CODE (type) == TYPE_CODE_REF) | |
373a8247 PM |
446 | { |
447 | /* Hack: remove (char *) for char strings. Their | |
0df8b418 | 448 | type is indicated by the quoted string anyway. */ |
6ced1581 | 449 | if (TYPE_CODE (type) == TYPE_CODE_PTR |
b20a3440 PM |
450 | && TYPE_NAME (type) == NULL |
451 | && TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL | |
6314a349 | 452 | && strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0) |
373a8247 | 453 | { |
0df8b418 | 454 | /* Print nothing. */ |
373a8247 PM |
455 | } |
456 | else | |
457 | { | |
458 | fprintf_filtered (stream, "("); | |
459 | type_print (type, "", stream, -1); | |
460 | fprintf_filtered (stream, ") "); | |
461 | } | |
462 | } | |
8e069a98 | 463 | common_val_print (val, stream, 0, &opts, current_language); |
373a8247 PM |
464 | } |
465 | ||
466 | ||
920d2a44 AC |
467 | static void |
468 | show_pascal_static_field_print (struct ui_file *file, int from_tty, | |
469 | struct cmd_list_element *c, const char *value) | |
470 | { | |
471 | fprintf_filtered (file, _("Printing of pascal static members is %s.\n"), | |
472 | value); | |
473 | } | |
373a8247 PM |
474 | |
475 | static struct obstack dont_print_vb_obstack; | |
476 | static struct obstack dont_print_statmem_obstack; | |
477 | ||
806048c6 | 478 | static void pascal_object_print_static_field (struct value *, |
79a45b7d TT |
479 | struct ui_file *, int, |
480 | const struct value_print_options *); | |
373a8247 | 481 | |
fc1a4b47 | 482 | static void pascal_object_print_value (struct type *, const gdb_byte *, |
6b850546 | 483 | LONGEST, |
79a45b7d | 484 | CORE_ADDR, struct ui_file *, int, |
e8b24d9f | 485 | struct value *, |
79a45b7d | 486 | const struct value_print_options *, |
a2bd3dcd | 487 | struct type **); |
373a8247 | 488 | |
373a8247 PM |
489 | /* It was changed to this after 2.4.5. */ |
490 | const char pascal_vtbl_ptr_name[] = | |
491 | {'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; | |
492 | ||
493 | /* Return truth value for assertion that TYPE is of the type | |
494 | "pointer to virtual function". */ | |
495 | ||
496 | int | |
fba45db2 | 497 | pascal_object_is_vtbl_ptr_type (struct type *type) |
373a8247 | 498 | { |
a737d952 | 499 | const char *type_name = TYPE_NAME (type); |
373a8247 | 500 | |
fe978cb0 PA |
501 | return (type_name != NULL |
502 | && strcmp (type_name, pascal_vtbl_ptr_name) == 0); | |
373a8247 PM |
503 | } |
504 | ||
505 | /* Return truth value for the assertion that TYPE is of the type | |
506 | "pointer to virtual function table". */ | |
507 | ||
508 | int | |
fba45db2 | 509 | pascal_object_is_vtbl_member (struct type *type) |
373a8247 PM |
510 | { |
511 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
512 | { | |
513 | type = TYPE_TARGET_TYPE (type); | |
514 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
515 | { | |
516 | type = TYPE_TARGET_TYPE (type); | |
0df8b418 MS |
517 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* If not using |
518 | thunks. */ | |
519 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* If using thunks. */ | |
373a8247 PM |
520 | { |
521 | /* Virtual functions tables are full of pointers | |
0df8b418 | 522 | to virtual functions. */ |
373a8247 PM |
523 | return pascal_object_is_vtbl_ptr_type (type); |
524 | } | |
525 | } | |
526 | } | |
527 | return 0; | |
528 | } | |
529 | ||
a2bd3dcd AC |
530 | /* Mutually recursive subroutines of pascal_object_print_value and |
531 | c_val_print to print out a structure's fields: | |
532 | pascal_object_print_value_fields and pascal_object_print_value. | |
373a8247 | 533 | |
79a45b7d | 534 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and OPTIONS have the |
373a8247 PM |
535 | same meanings as in pascal_object_print_value and c_val_print. |
536 | ||
537 | DONT_PRINT is an array of baseclass types that we | |
538 | should not print, or zero if called from top level. */ | |
539 | ||
1e592a8a | 540 | static void |
fc1a4b47 | 541 | pascal_object_print_value_fields (struct type *type, const gdb_byte *valaddr, |
6b850546 | 542 | LONGEST offset, |
fba45db2 | 543 | CORE_ADDR address, struct ui_file *stream, |
79a45b7d | 544 | int recurse, |
e8b24d9f | 545 | struct value *val, |
79a45b7d | 546 | const struct value_print_options *options, |
fba45db2 KB |
547 | struct type **dont_print_vb, |
548 | int dont_print_statmem) | |
373a8247 PM |
549 | { |
550 | int i, len, n_baseclasses; | |
79f33898 SM |
551 | char *last_dont_print |
552 | = (char *) obstack_next_free (&dont_print_statmem_obstack); | |
373a8247 | 553 | |
f168693b | 554 | type = check_typedef (type); |
373a8247 PM |
555 | |
556 | fprintf_filtered (stream, "{"); | |
557 | len = TYPE_NFIELDS (type); | |
558 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
559 | ||
560 | /* Print out baseclasses such that we don't print | |
561 | duplicates of virtual baseclasses. */ | |
562 | if (n_baseclasses > 0) | |
490f124f PA |
563 | pascal_object_print_value (type, valaddr, offset, address, |
564 | stream, recurse + 1, val, | |
565 | options, dont_print_vb); | |
373a8247 PM |
566 | |
567 | if (!len && n_baseclasses == 1) | |
7f6aba03 | 568 | fprintf_styled (stream, metadata_style.style (), "<No data fields>"); |
373a8247 PM |
569 | else |
570 | { | |
c1b6e682 | 571 | struct obstack tmp_obstack = dont_print_statmem_obstack; |
373a8247 PM |
572 | int fields_seen = 0; |
573 | ||
574 | if (dont_print_statmem == 0) | |
575 | { | |
576 | /* If we're at top level, carve out a completely fresh | |
577 | chunk of the obstack and use that until this particular | |
578 | invocation returns. */ | |
373a8247 PM |
579 | obstack_finish (&dont_print_statmem_obstack); |
580 | } | |
581 | ||
582 | for (i = n_baseclasses; i < len; i++) | |
583 | { | |
584 | /* If requested, skip printing of static fields. */ | |
79a45b7d | 585 | if (!options->pascal_static_field_print |
d6a843b5 | 586 | && field_is_static (&TYPE_FIELD (type, i))) |
373a8247 PM |
587 | continue; |
588 | if (fields_seen) | |
589 | fprintf_filtered (stream, ", "); | |
590 | else if (n_baseclasses > 0) | |
591 | { | |
2a998fc0 | 592 | if (options->prettyformat) |
373a8247 PM |
593 | { |
594 | fprintf_filtered (stream, "\n"); | |
595 | print_spaces_filtered (2 + 2 * recurse, stream); | |
596 | fputs_filtered ("members of ", stream); | |
a737d952 | 597 | fputs_filtered (TYPE_NAME (type), stream); |
373a8247 PM |
598 | fputs_filtered (": ", stream); |
599 | } | |
600 | } | |
601 | fields_seen = 1; | |
602 | ||
2a998fc0 | 603 | if (options->prettyformat) |
373a8247 PM |
604 | { |
605 | fprintf_filtered (stream, "\n"); | |
606 | print_spaces_filtered (2 + 2 * recurse, stream); | |
607 | } | |
608 | else | |
609 | { | |
610 | wrap_here (n_spaces (2 + 2 * recurse)); | |
611 | } | |
e93a8774 TT |
612 | |
613 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
614 | ||
615 | if (field_is_static (&TYPE_FIELD (type, i))) | |
3f0cbb04 TT |
616 | { |
617 | fputs_filtered ("static ", stream); | |
618 | fprintf_symbol_filtered (stream, | |
619 | TYPE_FIELD_NAME (type, i), | |
620 | current_language->la_language, | |
621 | DMGL_PARAMS | DMGL_ANSI); | |
622 | } | |
623 | else | |
624 | fputs_styled (TYPE_FIELD_NAME (type, i), | |
625 | variable_name_style.style (), stream); | |
e93a8774 TT |
626 | annotate_field_name_end (); |
627 | fputs_filtered (" = ", stream); | |
628 | annotate_field_value (); | |
373a8247 | 629 | |
d6a843b5 JK |
630 | if (!field_is_static (&TYPE_FIELD (type, i)) |
631 | && TYPE_FIELD_PACKED (type, i)) | |
373a8247 | 632 | { |
6943961c | 633 | struct value *v; |
373a8247 PM |
634 | |
635 | /* Bitfields require special handling, especially due to byte | |
636 | order problems. */ | |
637 | if (TYPE_FIELD_IGNORE (type, i)) | |
638 | { | |
7f6aba03 TT |
639 | fputs_styled ("<optimized out or zero length>", |
640 | metadata_style.style (), stream); | |
373a8247 | 641 | } |
8cf6f0b1 TT |
642 | else if (value_bits_synthetic_pointer (val, |
643 | TYPE_FIELD_BITPOS (type, | |
644 | i), | |
645 | TYPE_FIELD_BITSIZE (type, | |
646 | i))) | |
647 | { | |
7f6aba03 TT |
648 | fputs_styled (_("<synthetic pointer>"), |
649 | metadata_style.style (), stream); | |
8cf6f0b1 | 650 | } |
373a8247 PM |
651 | else |
652 | { | |
79a45b7d | 653 | struct value_print_options opts = *options; |
ad3bbd48 | 654 | |
5467c6c8 | 655 | v = value_field_bitfield (type, i, valaddr, offset, val); |
373a8247 | 656 | |
79a45b7d TT |
657 | opts.deref_ref = 0; |
658 | common_val_print (v, stream, recurse + 1, &opts, | |
659 | current_language); | |
373a8247 PM |
660 | } |
661 | } | |
662 | else | |
663 | { | |
664 | if (TYPE_FIELD_IGNORE (type, i)) | |
665 | { | |
7f6aba03 TT |
666 | fputs_styled ("<optimized out or zero length>", |
667 | metadata_style.style (), stream); | |
373a8247 | 668 | } |
d6a843b5 | 669 | else if (field_is_static (&TYPE_FIELD (type, i))) |
373a8247 | 670 | { |
3e43a32a | 671 | /* struct value *v = value_static_field (type, i); |
0df8b418 | 672 | v4.17 specific. */ |
6943961c | 673 | struct value *v; |
ad3bbd48 | 674 | |
5467c6c8 | 675 | v = value_field_bitfield (type, i, valaddr, offset, val); |
373a8247 PM |
676 | |
677 | if (v == NULL) | |
901461f8 | 678 | val_print_optimized_out (NULL, stream); |
373a8247 | 679 | else |
79a45b7d TT |
680 | pascal_object_print_static_field (v, stream, recurse + 1, |
681 | options); | |
373a8247 PM |
682 | } |
683 | else | |
684 | { | |
79a45b7d | 685 | struct value_print_options opts = *options; |
ad3bbd48 | 686 | |
79a45b7d | 687 | opts.deref_ref = 0; |
373a8247 PM |
688 | /* val_print (TYPE_FIELD_TYPE (type, i), |
689 | valaddr + TYPE_FIELD_BITPOS (type, i) / 8, | |
690 | address + TYPE_FIELD_BITPOS (type, i) / 8, 0, | |
691 | stream, format, 0, recurse + 1, pretty); */ | |
692 | val_print (TYPE_FIELD_TYPE (type, i), | |
e8b24d9f | 693 | offset + TYPE_FIELD_BITPOS (type, i) / 8, |
490f124f | 694 | address, stream, recurse + 1, val, &opts, |
d8ca156b | 695 | current_language); |
373a8247 PM |
696 | } |
697 | } | |
698 | annotate_field_end (); | |
699 | } | |
700 | ||
701 | if (dont_print_statmem == 0) | |
702 | { | |
703 | /* Free the space used to deal with the printing | |
704 | of the members from top level. */ | |
705 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
706 | dont_print_statmem_obstack = tmp_obstack; | |
707 | } | |
708 | ||
2a998fc0 | 709 | if (options->prettyformat) |
373a8247 PM |
710 | { |
711 | fprintf_filtered (stream, "\n"); | |
712 | print_spaces_filtered (2 * recurse, stream); | |
713 | } | |
714 | } | |
715 | fprintf_filtered (stream, "}"); | |
716 | } | |
717 | ||
718 | /* Special val_print routine to avoid printing multiple copies of virtual | |
719 | baseclasses. */ | |
720 | ||
7080f20f | 721 | static void |
fc1a4b47 | 722 | pascal_object_print_value (struct type *type, const gdb_byte *valaddr, |
6b850546 | 723 | LONGEST offset, |
a2bd3dcd | 724 | CORE_ADDR address, struct ui_file *stream, |
79a45b7d | 725 | int recurse, |
e8b24d9f | 726 | struct value *val, |
79a45b7d | 727 | const struct value_print_options *options, |
fba45db2 | 728 | struct type **dont_print_vb) |
373a8247 | 729 | { |
373a8247 | 730 | struct type **last_dont_print |
ad3bbd48 | 731 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); |
c1b6e682 | 732 | struct obstack tmp_obstack = dont_print_vb_obstack; |
373a8247 PM |
733 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); |
734 | ||
735 | if (dont_print_vb == 0) | |
736 | { | |
737 | /* If we're at top level, carve out a completely fresh | |
738 | chunk of the obstack and use that until this particular | |
739 | invocation returns. */ | |
373a8247 PM |
740 | /* Bump up the high-water mark. Now alpha is omega. */ |
741 | obstack_finish (&dont_print_vb_obstack); | |
742 | } | |
743 | ||
744 | for (i = 0; i < n_baseclasses; i++) | |
745 | { | |
6b850546 | 746 | LONGEST boffset = 0; |
373a8247 | 747 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); |
a737d952 | 748 | const char *basename = TYPE_NAME (baseclass); |
8af8e3bc | 749 | const gdb_byte *base_valaddr = NULL; |
6b850546 | 750 | LONGEST thisoffset; |
8af8e3bc | 751 | int skip = 0; |
49663d05 | 752 | gdb::byte_vector buf; |
373a8247 PM |
753 | |
754 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
755 | { | |
756 | struct type **first_dont_print | |
ad3bbd48 | 757 | = (struct type **) obstack_base (&dont_print_vb_obstack); |
373a8247 PM |
758 | |
759 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) | |
ad3bbd48 | 760 | - first_dont_print; |
373a8247 PM |
761 | |
762 | while (--j >= 0) | |
763 | if (baseclass == first_dont_print[j]) | |
764 | goto flush_it; | |
765 | ||
766 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
767 | } | |
768 | ||
490f124f PA |
769 | thisoffset = offset; |
770 | ||
a70b8144 | 771 | try |
8af8e3bc PA |
772 | { |
773 | boffset = baseclass_offset (type, i, valaddr, offset, address, val); | |
774 | } | |
230d2906 | 775 | catch (const gdb_exception_error &ex) |
8af8e3bc | 776 | { |
7556d4a4 PA |
777 | if (ex.error == NOT_AVAILABLE_ERROR) |
778 | skip = -1; | |
779 | else | |
780 | skip = 1; | |
781 | } | |
8af8e3bc | 782 | |
7556d4a4 PA |
783 | if (skip == 0) |
784 | { | |
8af8e3bc PA |
785 | /* The virtual base class pointer might have been clobbered by the |
786 | user program. Make sure that it still points to a valid memory | |
787 | location. */ | |
788 | ||
789 | if (boffset < 0 || boffset >= TYPE_LENGTH (type)) | |
790 | { | |
49663d05 | 791 | buf.resize (TYPE_LENGTH (baseclass)); |
6c18f3e0 | 792 | |
49663d05 TT |
793 | base_valaddr = buf.data (); |
794 | if (target_read_memory (address + boffset, buf.data (), | |
8af8e3bc PA |
795 | TYPE_LENGTH (baseclass)) != 0) |
796 | skip = 1; | |
797 | address = address + boffset; | |
798 | thisoffset = 0; | |
799 | boffset = 0; | |
800 | } | |
801 | else | |
802 | base_valaddr = valaddr; | |
803 | } | |
373a8247 | 804 | |
2a998fc0 | 805 | if (options->prettyformat) |
373a8247 PM |
806 | { |
807 | fprintf_filtered (stream, "\n"); | |
808 | print_spaces_filtered (2 * recurse, stream); | |
809 | } | |
810 | fputs_filtered ("<", stream); | |
811 | /* Not sure what the best notation is in the case where there is no | |
812 | baseclass name. */ | |
813 | ||
814 | fputs_filtered (basename ? basename : "", stream); | |
815 | fputs_filtered ("> = ", stream); | |
816 | ||
8af8e3bc PA |
817 | if (skip < 0) |
818 | val_print_unavailable (stream); | |
819 | else if (skip > 0) | |
820 | val_print_invalid_address (stream); | |
373a8247 | 821 | else |
3e43a32a | 822 | pascal_object_print_value_fields (baseclass, base_valaddr, |
490f124f PA |
823 | thisoffset + boffset, address, |
824 | stream, recurse, val, options, | |
373a8247 PM |
825 | (struct type **) obstack_base (&dont_print_vb_obstack), |
826 | 0); | |
827 | fputs_filtered (", ", stream); | |
828 | ||
829 | flush_it: | |
830 | ; | |
831 | } | |
832 | ||
833 | if (dont_print_vb == 0) | |
834 | { | |
835 | /* Free the space used to deal with the printing | |
836 | of this type from top level. */ | |
837 | obstack_free (&dont_print_vb_obstack, last_dont_print); | |
838 | /* Reset watermark so that we can continue protecting | |
839 | ourselves from whatever we were protecting ourselves. */ | |
840 | dont_print_vb_obstack = tmp_obstack; | |
841 | } | |
842 | } | |
843 | ||
844 | /* Print value of a static member. | |
845 | To avoid infinite recursion when printing a class that contains | |
846 | a static instance of the class, we keep the addresses of all printed | |
847 | static member classes in an obstack and refuse to print them more | |
848 | than once. | |
849 | ||
79a45b7d | 850 | VAL contains the value to print, STREAM, RECURSE, and OPTIONS |
373a8247 PM |
851 | have the same meanings as in c_val_print. */ |
852 | ||
853 | static void | |
806048c6 | 854 | pascal_object_print_static_field (struct value *val, |
79a45b7d TT |
855 | struct ui_file *stream, |
856 | int recurse, | |
857 | const struct value_print_options *options) | |
373a8247 | 858 | { |
806048c6 | 859 | struct type *type = value_type (val); |
79a45b7d | 860 | struct value_print_options opts; |
806048c6 | 861 | |
686d4def PA |
862 | if (value_entirely_optimized_out (val)) |
863 | { | |
864 | val_print_optimized_out (val, stream); | |
865 | return; | |
866 | } | |
867 | ||
373a8247 PM |
868 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
869 | { | |
42ae5230 | 870 | CORE_ADDR *first_dont_print, addr; |
373a8247 PM |
871 | int i; |
872 | ||
873 | first_dont_print | |
874 | = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); | |
875 | i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) | |
876 | - first_dont_print; | |
877 | ||
878 | while (--i >= 0) | |
879 | { | |
42ae5230 | 880 | if (value_address (val) == first_dont_print[i]) |
373a8247 | 881 | { |
2dbc041e TT |
882 | fputs_styled (_("\ |
883 | <same as static member of an already seen type>"), | |
884 | metadata_style.style (), stream); | |
373a8247 PM |
885 | return; |
886 | } | |
887 | } | |
888 | ||
42ae5230 TT |
889 | addr = value_address (val); |
890 | obstack_grow (&dont_print_statmem_obstack, (char *) &addr, | |
373a8247 PM |
891 | sizeof (CORE_ADDR)); |
892 | ||
f168693b | 893 | type = check_typedef (type); |
490f124f PA |
894 | pascal_object_print_value_fields (type, |
895 | value_contents_for_printing (val), | |
896 | value_embedded_offset (val), | |
897 | addr, | |
898 | stream, recurse, | |
899 | val, options, NULL, 1); | |
373a8247 PM |
900 | return; |
901 | } | |
79a45b7d TT |
902 | |
903 | opts = *options; | |
904 | opts.deref_ref = 0; | |
905 | common_val_print (val, stream, recurse, &opts, current_language); | |
373a8247 PM |
906 | } |
907 | ||
6c265988 | 908 | void _initialize_pascal_valprint (); |
373a8247 | 909 | void |
6c265988 | 910 | _initialize_pascal_valprint () |
373a8247 | 911 | { |
5bf193a2 | 912 | add_setshow_boolean_cmd ("pascal_static-members", class_support, |
79a45b7d | 913 | &user_print_options.pascal_static_field_print, _("\ |
5bf193a2 AC |
914 | Set printing of pascal static members."), _("\ |
915 | Show printing of pascal static members."), NULL, | |
916 | NULL, | |
920d2a44 | 917 | show_pascal_static_field_print, |
5bf193a2 | 918 | &setprintlist, &showprintlist); |
373a8247 | 919 | } |