Commit | Line | Data |
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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" |
49663d05 | 41 | #include "common/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; |
be903358 | 251 | struct block *block = NULL; |
373a8247 | 252 | |
b012acdd TT |
253 | if (want_space) |
254 | fputs_filtered (" ", stream); | |
255 | ||
7cbd4a93 | 256 | if (msymbol.minsym != NULL) |
de63c46b PA |
257 | { |
258 | const char *search_name | |
259 | = MSYMBOL_SEARCH_NAME (msymbol.minsym); | |
260 | wsym = lookup_symbol_search_name (search_name, block, | |
261 | VAR_DOMAIN).symbol; | |
262 | } | |
e13eedd5 PM |
263 | |
264 | if (wsym) | |
373a8247 | 265 | { |
e13eedd5 | 266 | wtype = SYMBOL_TYPE (wsym); |
373a8247 | 267 | } |
e13eedd5 | 268 | else |
373a8247 | 269 | { |
e13eedd5 PM |
270 | wtype = TYPE_TARGET_TYPE (type); |
271 | } | |
272 | vt_val = value_at (wtype, vt_address); | |
273 | common_val_print (vt_val, stream, recurse + 1, options, | |
274 | current_language); | |
2a998fc0 | 275 | if (options->prettyformat) |
e13eedd5 PM |
276 | { |
277 | fprintf_filtered (stream, "\n"); | |
278 | print_spaces_filtered (2 + 2 * recurse, stream); | |
373a8247 PM |
279 | } |
280 | } | |
373a8247 | 281 | } |
e13eedd5 | 282 | |
d3eab38a | 283 | return; |
373a8247 | 284 | |
373a8247 | 285 | case TYPE_CODE_REF: |
e88acd96 TT |
286 | case TYPE_CODE_ENUM: |
287 | case TYPE_CODE_FLAGS: | |
288 | case TYPE_CODE_FUNC: | |
289 | case TYPE_CODE_RANGE: | |
290 | case TYPE_CODE_INT: | |
291 | case TYPE_CODE_FLT: | |
292 | case TYPE_CODE_VOID: | |
293 | case TYPE_CODE_ERROR: | |
294 | case TYPE_CODE_UNDEF: | |
295 | case TYPE_CODE_BOOL: | |
296 | case TYPE_CODE_CHAR: | |
e8b24d9f | 297 | generic_val_print (type, embedded_offset, address, |
e88acd96 TT |
298 | stream, recurse, original_value, options, |
299 | &p_decorations); | |
373a8247 PM |
300 | break; |
301 | ||
302 | case TYPE_CODE_UNION: | |
79a45b7d | 303 | if (recurse && !options->unionprint) |
373a8247 PM |
304 | { |
305 | fprintf_filtered (stream, "{...}"); | |
306 | break; | |
307 | } | |
308 | /* Fall through. */ | |
309 | case TYPE_CODE_STRUCT: | |
79a45b7d | 310 | if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type)) |
373a8247 PM |
311 | { |
312 | /* Print the unmangled name if desired. */ | |
313 | /* Print vtable entry - we only get here if NOT using | |
0df8b418 | 314 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */ |
b276f1bb AC |
315 | /* Extract the address, assume that it is unsigned. */ |
316 | print_address_demangle | |
edf0c1b7 | 317 | (options, gdbarch, |
3e43a32a MS |
318 | extract_unsigned_integer (valaddr + embedded_offset |
319 | + TYPE_FIELD_BITPOS (type, | |
320 | VTBL_FNADDR_OFFSET) / 8, | |
321 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, | |
322 | VTBL_FNADDR_OFFSET)), | |
323 | byte_order), | |
b276f1bb | 324 | stream, demangle); |
373a8247 PM |
325 | } |
326 | else | |
327 | { | |
5598ce11 | 328 | if (is_pascal_string_type (type, &length_pos, &length_size, |
6c7a06a3 | 329 | &string_pos, &char_type, NULL)) |
373a8247 | 330 | { |
3e43a32a MS |
331 | len = extract_unsigned_integer (valaddr + embedded_offset |
332 | + length_pos, length_size, | |
333 | byte_order); | |
6ced1581 | 334 | LA_PRINT_STRING (stream, char_type, |
be759fcf PM |
335 | valaddr + embedded_offset + string_pos, |
336 | len, NULL, 0, options); | |
373a8247 PM |
337 | } |
338 | else | |
490f124f | 339 | pascal_object_print_value_fields (type, valaddr, embedded_offset, |
3e43a32a MS |
340 | address, stream, recurse, |
341 | original_value, options, | |
342 | NULL, 0); | |
373a8247 PM |
343 | } |
344 | break; | |
345 | ||
373a8247 PM |
346 | case TYPE_CODE_SET: |
347 | elttype = TYPE_INDEX_TYPE (type); | |
f168693b | 348 | elttype = check_typedef (elttype); |
74a9bb82 | 349 | if (TYPE_STUB (elttype)) |
373a8247 PM |
350 | { |
351 | fprintf_filtered (stream, "<incomplete type>"); | |
352 | gdb_flush (stream); | |
353 | break; | |
354 | } | |
355 | else | |
356 | { | |
357 | struct type *range = elttype; | |
358 | LONGEST low_bound, high_bound; | |
373a8247 PM |
359 | int need_comma = 0; |
360 | ||
6b1755ce | 361 | fputs_filtered ("[", stream); |
373a8247 | 362 | |
b926417a | 363 | int bound_info = get_discrete_bounds (range, &low_bound, &high_bound); |
7a081a30 PM |
364 | if (low_bound == 0 && high_bound == -1 && TYPE_LENGTH (type) > 0) |
365 | { | |
366 | /* If we know the size of the set type, we can figure out the | |
367 | maximum value. */ | |
b926417a | 368 | bound_info = 0; |
7a081a30 PM |
369 | high_bound = TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1; |
370 | TYPE_HIGH_BOUND (range) = high_bound; | |
371 | } | |
373a8247 | 372 | maybe_bad_bstring: |
b926417a | 373 | if (bound_info < 0) |
373a8247 PM |
374 | { |
375 | fputs_filtered ("<error value>", stream); | |
376 | goto done; | |
377 | } | |
378 | ||
379 | for (i = low_bound; i <= high_bound; i++) | |
380 | { | |
3e43a32a MS |
381 | int element = value_bit_index (type, |
382 | valaddr + embedded_offset, i); | |
ad3bbd48 | 383 | |
373a8247 PM |
384 | if (element < 0) |
385 | { | |
386 | i = element; | |
387 | goto maybe_bad_bstring; | |
388 | } | |
6b1755ce | 389 | if (element) |
373a8247 PM |
390 | { |
391 | if (need_comma) | |
392 | fputs_filtered (", ", stream); | |
393 | print_type_scalar (range, i, stream); | |
394 | need_comma = 1; | |
395 | ||
3e43a32a MS |
396 | if (i + 1 <= high_bound |
397 | && value_bit_index (type, | |
398 | valaddr + embedded_offset, ++i)) | |
373a8247 PM |
399 | { |
400 | int j = i; | |
ad3bbd48 | 401 | |
373a8247 PM |
402 | fputs_filtered ("..", stream); |
403 | while (i + 1 <= high_bound | |
3e43a32a MS |
404 | && value_bit_index (type, |
405 | valaddr + embedded_offset, | |
406 | ++i)) | |
373a8247 PM |
407 | j = i; |
408 | print_type_scalar (range, j, stream); | |
409 | } | |
410 | } | |
411 | } | |
412 | done: | |
6b1755ce | 413 | fputs_filtered ("]", stream); |
373a8247 PM |
414 | } |
415 | break; | |
416 | ||
373a8247 | 417 | default: |
3e43a32a MS |
418 | error (_("Invalid pascal type code %d in symbol table."), |
419 | TYPE_CODE (type)); | |
373a8247 PM |
420 | } |
421 | gdb_flush (stream); | |
373a8247 PM |
422 | } |
423 | \f | |
8e069a98 | 424 | void |
79a45b7d TT |
425 | pascal_value_print (struct value *val, struct ui_file *stream, |
426 | const struct value_print_options *options) | |
373a8247 | 427 | { |
df407dfe | 428 | struct type *type = value_type (val); |
278582cb PM |
429 | struct value_print_options opts = *options; |
430 | ||
431 | opts.deref_ref = 1; | |
373a8247 PM |
432 | |
433 | /* If it is a pointer, indicate what it points to. | |
434 | ||
435 | Print type also if it is a reference. | |
436 | ||
437 | Object pascal: if it is a member pointer, we will take care | |
438 | of that when we print it. */ | |
b20a3440 PM |
439 | if (TYPE_CODE (type) == TYPE_CODE_PTR |
440 | || TYPE_CODE (type) == TYPE_CODE_REF) | |
373a8247 PM |
441 | { |
442 | /* Hack: remove (char *) for char strings. Their | |
0df8b418 | 443 | type is indicated by the quoted string anyway. */ |
6ced1581 | 444 | if (TYPE_CODE (type) == TYPE_CODE_PTR |
b20a3440 PM |
445 | && TYPE_NAME (type) == NULL |
446 | && TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL | |
6314a349 | 447 | && strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0) |
373a8247 | 448 | { |
0df8b418 | 449 | /* Print nothing. */ |
373a8247 PM |
450 | } |
451 | else | |
452 | { | |
453 | fprintf_filtered (stream, "("); | |
454 | type_print (type, "", stream, -1); | |
455 | fprintf_filtered (stream, ") "); | |
456 | } | |
457 | } | |
8e069a98 | 458 | common_val_print (val, stream, 0, &opts, current_language); |
373a8247 PM |
459 | } |
460 | ||
461 | ||
920d2a44 AC |
462 | static void |
463 | show_pascal_static_field_print (struct ui_file *file, int from_tty, | |
464 | struct cmd_list_element *c, const char *value) | |
465 | { | |
466 | fprintf_filtered (file, _("Printing of pascal static members is %s.\n"), | |
467 | value); | |
468 | } | |
373a8247 PM |
469 | |
470 | static struct obstack dont_print_vb_obstack; | |
471 | static struct obstack dont_print_statmem_obstack; | |
472 | ||
806048c6 | 473 | static void pascal_object_print_static_field (struct value *, |
79a45b7d TT |
474 | struct ui_file *, int, |
475 | const struct value_print_options *); | |
373a8247 | 476 | |
fc1a4b47 | 477 | static void pascal_object_print_value (struct type *, const gdb_byte *, |
6b850546 | 478 | LONGEST, |
79a45b7d | 479 | CORE_ADDR, struct ui_file *, int, |
e8b24d9f | 480 | struct value *, |
79a45b7d | 481 | const struct value_print_options *, |
a2bd3dcd | 482 | struct type **); |
373a8247 | 483 | |
373a8247 PM |
484 | /* It was changed to this after 2.4.5. */ |
485 | const char pascal_vtbl_ptr_name[] = | |
486 | {'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; | |
487 | ||
488 | /* Return truth value for assertion that TYPE is of the type | |
489 | "pointer to virtual function". */ | |
490 | ||
491 | int | |
fba45db2 | 492 | pascal_object_is_vtbl_ptr_type (struct type *type) |
373a8247 | 493 | { |
a737d952 | 494 | const char *type_name = TYPE_NAME (type); |
373a8247 | 495 | |
fe978cb0 PA |
496 | return (type_name != NULL |
497 | && strcmp (type_name, pascal_vtbl_ptr_name) == 0); | |
373a8247 PM |
498 | } |
499 | ||
500 | /* Return truth value for the assertion that TYPE is of the type | |
501 | "pointer to virtual function table". */ | |
502 | ||
503 | int | |
fba45db2 | 504 | pascal_object_is_vtbl_member (struct type *type) |
373a8247 PM |
505 | { |
506 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
507 | { | |
508 | type = TYPE_TARGET_TYPE (type); | |
509 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
510 | { | |
511 | type = TYPE_TARGET_TYPE (type); | |
0df8b418 MS |
512 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* If not using |
513 | thunks. */ | |
514 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* If using thunks. */ | |
373a8247 PM |
515 | { |
516 | /* Virtual functions tables are full of pointers | |
0df8b418 | 517 | to virtual functions. */ |
373a8247 PM |
518 | return pascal_object_is_vtbl_ptr_type (type); |
519 | } | |
520 | } | |
521 | } | |
522 | return 0; | |
523 | } | |
524 | ||
a2bd3dcd AC |
525 | /* Mutually recursive subroutines of pascal_object_print_value and |
526 | c_val_print to print out a structure's fields: | |
527 | pascal_object_print_value_fields and pascal_object_print_value. | |
373a8247 | 528 | |
79a45b7d | 529 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and OPTIONS have the |
373a8247 PM |
530 | same meanings as in pascal_object_print_value and c_val_print. |
531 | ||
532 | DONT_PRINT is an array of baseclass types that we | |
533 | should not print, or zero if called from top level. */ | |
534 | ||
535 | void | |
fc1a4b47 | 536 | pascal_object_print_value_fields (struct type *type, const gdb_byte *valaddr, |
6b850546 | 537 | LONGEST offset, |
fba45db2 | 538 | CORE_ADDR address, struct ui_file *stream, |
79a45b7d | 539 | int recurse, |
e8b24d9f | 540 | struct value *val, |
79a45b7d | 541 | const struct value_print_options *options, |
fba45db2 KB |
542 | struct type **dont_print_vb, |
543 | int dont_print_statmem) | |
373a8247 PM |
544 | { |
545 | int i, len, n_baseclasses; | |
79f33898 SM |
546 | char *last_dont_print |
547 | = (char *) obstack_next_free (&dont_print_statmem_obstack); | |
373a8247 | 548 | |
f168693b | 549 | type = check_typedef (type); |
373a8247 PM |
550 | |
551 | fprintf_filtered (stream, "{"); | |
552 | len = TYPE_NFIELDS (type); | |
553 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
554 | ||
555 | /* Print out baseclasses such that we don't print | |
556 | duplicates of virtual baseclasses. */ | |
557 | if (n_baseclasses > 0) | |
490f124f PA |
558 | pascal_object_print_value (type, valaddr, offset, address, |
559 | stream, recurse + 1, val, | |
560 | options, dont_print_vb); | |
373a8247 PM |
561 | |
562 | if (!len && n_baseclasses == 1) | |
563 | fprintf_filtered (stream, "<No data fields>"); | |
564 | else | |
565 | { | |
c1b6e682 | 566 | struct obstack tmp_obstack = dont_print_statmem_obstack; |
373a8247 PM |
567 | int fields_seen = 0; |
568 | ||
569 | if (dont_print_statmem == 0) | |
570 | { | |
571 | /* If we're at top level, carve out a completely fresh | |
572 | chunk of the obstack and use that until this particular | |
573 | invocation returns. */ | |
373a8247 PM |
574 | obstack_finish (&dont_print_statmem_obstack); |
575 | } | |
576 | ||
577 | for (i = n_baseclasses; i < len; i++) | |
578 | { | |
579 | /* If requested, skip printing of static fields. */ | |
79a45b7d | 580 | if (!options->pascal_static_field_print |
d6a843b5 | 581 | && field_is_static (&TYPE_FIELD (type, i))) |
373a8247 PM |
582 | continue; |
583 | if (fields_seen) | |
584 | fprintf_filtered (stream, ", "); | |
585 | else if (n_baseclasses > 0) | |
586 | { | |
2a998fc0 | 587 | if (options->prettyformat) |
373a8247 PM |
588 | { |
589 | fprintf_filtered (stream, "\n"); | |
590 | print_spaces_filtered (2 + 2 * recurse, stream); | |
591 | fputs_filtered ("members of ", stream); | |
a737d952 | 592 | fputs_filtered (TYPE_NAME (type), stream); |
373a8247 PM |
593 | fputs_filtered (": ", stream); |
594 | } | |
595 | } | |
596 | fields_seen = 1; | |
597 | ||
2a998fc0 | 598 | if (options->prettyformat) |
373a8247 PM |
599 | { |
600 | fprintf_filtered (stream, "\n"); | |
601 | print_spaces_filtered (2 + 2 * recurse, stream); | |
602 | } | |
603 | else | |
604 | { | |
605 | wrap_here (n_spaces (2 + 2 * recurse)); | |
606 | } | |
e93a8774 TT |
607 | |
608 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
609 | ||
610 | if (field_is_static (&TYPE_FIELD (type, i))) | |
611 | fputs_filtered ("static ", stream); | |
612 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
613 | language_cplus, | |
614 | DMGL_PARAMS | DMGL_ANSI); | |
615 | annotate_field_name_end (); | |
616 | fputs_filtered (" = ", stream); | |
617 | annotate_field_value (); | |
373a8247 | 618 | |
d6a843b5 JK |
619 | if (!field_is_static (&TYPE_FIELD (type, i)) |
620 | && TYPE_FIELD_PACKED (type, i)) | |
373a8247 | 621 | { |
6943961c | 622 | struct value *v; |
373a8247 PM |
623 | |
624 | /* Bitfields require special handling, especially due to byte | |
625 | order problems. */ | |
626 | if (TYPE_FIELD_IGNORE (type, i)) | |
627 | { | |
628 | fputs_filtered ("<optimized out or zero length>", stream); | |
629 | } | |
8cf6f0b1 TT |
630 | else if (value_bits_synthetic_pointer (val, |
631 | TYPE_FIELD_BITPOS (type, | |
632 | i), | |
633 | TYPE_FIELD_BITSIZE (type, | |
634 | i))) | |
635 | { | |
636 | fputs_filtered (_("<synthetic pointer>"), stream); | |
637 | } | |
373a8247 PM |
638 | else |
639 | { | |
79a45b7d | 640 | struct value_print_options opts = *options; |
ad3bbd48 | 641 | |
5467c6c8 | 642 | v = value_field_bitfield (type, i, valaddr, offset, val); |
373a8247 | 643 | |
79a45b7d TT |
644 | opts.deref_ref = 0; |
645 | common_val_print (v, stream, recurse + 1, &opts, | |
646 | current_language); | |
373a8247 PM |
647 | } |
648 | } | |
649 | else | |
650 | { | |
651 | if (TYPE_FIELD_IGNORE (type, i)) | |
652 | { | |
653 | fputs_filtered ("<optimized out or zero length>", stream); | |
654 | } | |
d6a843b5 | 655 | else if (field_is_static (&TYPE_FIELD (type, i))) |
373a8247 | 656 | { |
3e43a32a | 657 | /* struct value *v = value_static_field (type, i); |
0df8b418 | 658 | v4.17 specific. */ |
6943961c | 659 | struct value *v; |
ad3bbd48 | 660 | |
5467c6c8 | 661 | v = value_field_bitfield (type, i, valaddr, offset, val); |
373a8247 PM |
662 | |
663 | if (v == NULL) | |
901461f8 | 664 | val_print_optimized_out (NULL, stream); |
373a8247 | 665 | else |
79a45b7d TT |
666 | pascal_object_print_static_field (v, stream, recurse + 1, |
667 | options); | |
373a8247 PM |
668 | } |
669 | else | |
670 | { | |
79a45b7d | 671 | struct value_print_options opts = *options; |
ad3bbd48 | 672 | |
79a45b7d | 673 | opts.deref_ref = 0; |
373a8247 PM |
674 | /* val_print (TYPE_FIELD_TYPE (type, i), |
675 | valaddr + TYPE_FIELD_BITPOS (type, i) / 8, | |
676 | address + TYPE_FIELD_BITPOS (type, i) / 8, 0, | |
677 | stream, format, 0, recurse + 1, pretty); */ | |
678 | val_print (TYPE_FIELD_TYPE (type, i), | |
e8b24d9f | 679 | offset + TYPE_FIELD_BITPOS (type, i) / 8, |
490f124f | 680 | address, stream, recurse + 1, val, &opts, |
d8ca156b | 681 | current_language); |
373a8247 PM |
682 | } |
683 | } | |
684 | annotate_field_end (); | |
685 | } | |
686 | ||
687 | if (dont_print_statmem == 0) | |
688 | { | |
689 | /* Free the space used to deal with the printing | |
690 | of the members from top level. */ | |
691 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
692 | dont_print_statmem_obstack = tmp_obstack; | |
693 | } | |
694 | ||
2a998fc0 | 695 | if (options->prettyformat) |
373a8247 PM |
696 | { |
697 | fprintf_filtered (stream, "\n"); | |
698 | print_spaces_filtered (2 * recurse, stream); | |
699 | } | |
700 | } | |
701 | fprintf_filtered (stream, "}"); | |
702 | } | |
703 | ||
704 | /* Special val_print routine to avoid printing multiple copies of virtual | |
705 | baseclasses. */ | |
706 | ||
7080f20f | 707 | static void |
fc1a4b47 | 708 | pascal_object_print_value (struct type *type, const gdb_byte *valaddr, |
6b850546 | 709 | LONGEST offset, |
a2bd3dcd | 710 | CORE_ADDR address, struct ui_file *stream, |
79a45b7d | 711 | int recurse, |
e8b24d9f | 712 | struct value *val, |
79a45b7d | 713 | const struct value_print_options *options, |
fba45db2 | 714 | struct type **dont_print_vb) |
373a8247 | 715 | { |
373a8247 | 716 | struct type **last_dont_print |
ad3bbd48 | 717 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); |
c1b6e682 | 718 | struct obstack tmp_obstack = dont_print_vb_obstack; |
373a8247 PM |
719 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); |
720 | ||
721 | if (dont_print_vb == 0) | |
722 | { | |
723 | /* If we're at top level, carve out a completely fresh | |
724 | chunk of the obstack and use that until this particular | |
725 | invocation returns. */ | |
373a8247 PM |
726 | /* Bump up the high-water mark. Now alpha is omega. */ |
727 | obstack_finish (&dont_print_vb_obstack); | |
728 | } | |
729 | ||
730 | for (i = 0; i < n_baseclasses; i++) | |
731 | { | |
6b850546 | 732 | LONGEST boffset = 0; |
373a8247 | 733 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); |
a737d952 | 734 | const char *basename = TYPE_NAME (baseclass); |
8af8e3bc | 735 | const gdb_byte *base_valaddr = NULL; |
6b850546 | 736 | LONGEST thisoffset; |
8af8e3bc | 737 | int skip = 0; |
49663d05 | 738 | gdb::byte_vector buf; |
373a8247 PM |
739 | |
740 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
741 | { | |
742 | struct type **first_dont_print | |
ad3bbd48 | 743 | = (struct type **) obstack_base (&dont_print_vb_obstack); |
373a8247 PM |
744 | |
745 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) | |
ad3bbd48 | 746 | - first_dont_print; |
373a8247 PM |
747 | |
748 | while (--j >= 0) | |
749 | if (baseclass == first_dont_print[j]) | |
750 | goto flush_it; | |
751 | ||
752 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
753 | } | |
754 | ||
490f124f PA |
755 | thisoffset = offset; |
756 | ||
492d29ea | 757 | TRY |
8af8e3bc PA |
758 | { |
759 | boffset = baseclass_offset (type, i, valaddr, offset, address, val); | |
760 | } | |
492d29ea | 761 | CATCH (ex, RETURN_MASK_ERROR) |
8af8e3bc | 762 | { |
7556d4a4 PA |
763 | if (ex.error == NOT_AVAILABLE_ERROR) |
764 | skip = -1; | |
765 | else | |
766 | skip = 1; | |
767 | } | |
492d29ea | 768 | END_CATCH |
8af8e3bc | 769 | |
7556d4a4 PA |
770 | if (skip == 0) |
771 | { | |
8af8e3bc PA |
772 | /* The virtual base class pointer might have been clobbered by the |
773 | user program. Make sure that it still points to a valid memory | |
774 | location. */ | |
775 | ||
776 | if (boffset < 0 || boffset >= TYPE_LENGTH (type)) | |
777 | { | |
49663d05 | 778 | buf.resize (TYPE_LENGTH (baseclass)); |
6c18f3e0 | 779 | |
49663d05 TT |
780 | base_valaddr = buf.data (); |
781 | if (target_read_memory (address + boffset, buf.data (), | |
8af8e3bc PA |
782 | TYPE_LENGTH (baseclass)) != 0) |
783 | skip = 1; | |
784 | address = address + boffset; | |
785 | thisoffset = 0; | |
786 | boffset = 0; | |
787 | } | |
788 | else | |
789 | base_valaddr = valaddr; | |
790 | } | |
373a8247 | 791 | |
2a998fc0 | 792 | if (options->prettyformat) |
373a8247 PM |
793 | { |
794 | fprintf_filtered (stream, "\n"); | |
795 | print_spaces_filtered (2 * recurse, stream); | |
796 | } | |
797 | fputs_filtered ("<", stream); | |
798 | /* Not sure what the best notation is in the case where there is no | |
799 | baseclass name. */ | |
800 | ||
801 | fputs_filtered (basename ? basename : "", stream); | |
802 | fputs_filtered ("> = ", stream); | |
803 | ||
8af8e3bc PA |
804 | if (skip < 0) |
805 | val_print_unavailable (stream); | |
806 | else if (skip > 0) | |
807 | val_print_invalid_address (stream); | |
373a8247 | 808 | else |
3e43a32a | 809 | pascal_object_print_value_fields (baseclass, base_valaddr, |
490f124f PA |
810 | thisoffset + boffset, address, |
811 | stream, recurse, val, options, | |
373a8247 PM |
812 | (struct type **) obstack_base (&dont_print_vb_obstack), |
813 | 0); | |
814 | fputs_filtered (", ", stream); | |
815 | ||
816 | flush_it: | |
817 | ; | |
818 | } | |
819 | ||
820 | if (dont_print_vb == 0) | |
821 | { | |
822 | /* Free the space used to deal with the printing | |
823 | of this type from top level. */ | |
824 | obstack_free (&dont_print_vb_obstack, last_dont_print); | |
825 | /* Reset watermark so that we can continue protecting | |
826 | ourselves from whatever we were protecting ourselves. */ | |
827 | dont_print_vb_obstack = tmp_obstack; | |
828 | } | |
829 | } | |
830 | ||
831 | /* Print value of a static member. | |
832 | To avoid infinite recursion when printing a class that contains | |
833 | a static instance of the class, we keep the addresses of all printed | |
834 | static member classes in an obstack and refuse to print them more | |
835 | than once. | |
836 | ||
79a45b7d | 837 | VAL contains the value to print, STREAM, RECURSE, and OPTIONS |
373a8247 PM |
838 | have the same meanings as in c_val_print. */ |
839 | ||
840 | static void | |
806048c6 | 841 | pascal_object_print_static_field (struct value *val, |
79a45b7d TT |
842 | struct ui_file *stream, |
843 | int recurse, | |
844 | const struct value_print_options *options) | |
373a8247 | 845 | { |
806048c6 | 846 | struct type *type = value_type (val); |
79a45b7d | 847 | struct value_print_options opts; |
806048c6 | 848 | |
686d4def PA |
849 | if (value_entirely_optimized_out (val)) |
850 | { | |
851 | val_print_optimized_out (val, stream); | |
852 | return; | |
853 | } | |
854 | ||
373a8247 PM |
855 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
856 | { | |
42ae5230 | 857 | CORE_ADDR *first_dont_print, addr; |
373a8247 PM |
858 | int i; |
859 | ||
860 | first_dont_print | |
861 | = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); | |
862 | i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) | |
863 | - first_dont_print; | |
864 | ||
865 | while (--i >= 0) | |
866 | { | |
42ae5230 | 867 | if (value_address (val) == first_dont_print[i]) |
373a8247 | 868 | { |
3e43a32a MS |
869 | fputs_filtered ("\ |
870 | <same as static member of an already seen type>", | |
373a8247 PM |
871 | stream); |
872 | return; | |
873 | } | |
874 | } | |
875 | ||
42ae5230 TT |
876 | addr = value_address (val); |
877 | obstack_grow (&dont_print_statmem_obstack, (char *) &addr, | |
373a8247 PM |
878 | sizeof (CORE_ADDR)); |
879 | ||
f168693b | 880 | type = check_typedef (type); |
490f124f PA |
881 | pascal_object_print_value_fields (type, |
882 | value_contents_for_printing (val), | |
883 | value_embedded_offset (val), | |
884 | addr, | |
885 | stream, recurse, | |
886 | val, options, NULL, 1); | |
373a8247 PM |
887 | return; |
888 | } | |
79a45b7d TT |
889 | |
890 | opts = *options; | |
891 | opts.deref_ref = 0; | |
892 | common_val_print (val, stream, recurse, &opts, current_language); | |
373a8247 PM |
893 | } |
894 | ||
373a8247 | 895 | void |
fba45db2 | 896 | _initialize_pascal_valprint (void) |
373a8247 | 897 | { |
5bf193a2 | 898 | add_setshow_boolean_cmd ("pascal_static-members", class_support, |
79a45b7d | 899 | &user_print_options.pascal_static_field_print, _("\ |
5bf193a2 AC |
900 | Set printing of pascal static members."), _("\ |
901 | Show printing of pascal static members."), NULL, | |
902 | NULL, | |
920d2a44 | 903 | show_pascal_static_field_print, |
5bf193a2 | 904 | &setprintlist, &showprintlist); |
373a8247 | 905 | } |