Commit | Line | Data |
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373a8247 | 1 | /* Support for printing Pascal values for GDB, the GNU debugger. |
5bcca90b | 2 | |
e2882c85 | 3 | Copyright (C) 2000-2018 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 | 71 | unsigned len; |
df178451 | 72 | LONGEST low_bound, high_bound; |
373a8247 PM |
73 | struct type *elttype; |
74 | unsigned eltlen; | |
5598ce11 | 75 | int length_pos, length_size, string_pos; |
6c7a06a3 | 76 | struct type *char_type; |
373a8247 | 77 | CORE_ADDR addr; |
b012acdd | 78 | int want_space = 0; |
e8b24d9f | 79 | const gdb_byte *valaddr = value_contents_for_printing (original_value); |
373a8247 | 80 | |
f168693b | 81 | type = check_typedef (type); |
373a8247 PM |
82 | switch (TYPE_CODE (type)) |
83 | { | |
84 | case TYPE_CODE_ARRAY: | |
6ced1581 | 85 | if (get_array_bounds (type, &low_bound, &high_bound)) |
373a8247 | 86 | { |
8148cf8d | 87 | len = high_bound - low_bound + 1; |
373a8247 PM |
88 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); |
89 | eltlen = TYPE_LENGTH (elttype); | |
2a998fc0 | 90 | if (options->prettyformat_arrays) |
373a8247 PM |
91 | { |
92 | print_spaces_filtered (2 + 2 * recurse, stream); | |
93 | } | |
6e354e5e PM |
94 | /* If 's' format is used, try to print out as string. |
95 | If no format is given, print as string if element type | |
96 | is of TYPE_CODE_CHAR and element size is 1,2 or 4. */ | |
97 | if (options->format == 's' | |
98 | || ((eltlen == 1 || eltlen == 2 || eltlen == 4) | |
99 | && TYPE_CODE (elttype) == TYPE_CODE_CHAR | |
100 | && options->format == 0)) | |
373a8247 PM |
101 | { |
102 | /* If requested, look for the first null char and only print | |
103 | elements up to it. */ | |
79a45b7d | 104 | if (options->stop_print_at_null) |
373a8247 PM |
105 | { |
106 | unsigned int temp_len; | |
107 | ||
0df8b418 | 108 | /* Look for a NULL char. */ |
373a8247 | 109 | for (temp_len = 0; |
58159490 | 110 | extract_unsigned_integer (valaddr + embedded_offset + |
e17a4113 UW |
111 | temp_len * eltlen, eltlen, |
112 | byte_order) | |
79a45b7d | 113 | && temp_len < len && temp_len < options->print_max; |
373a8247 PM |
114 | temp_len++); |
115 | len = temp_len; | |
116 | } | |
117 | ||
6c7a06a3 | 118 | LA_PRINT_STRING (stream, TYPE_TARGET_TYPE (type), |
be759fcf | 119 | valaddr + embedded_offset, len, NULL, 0, |
6c7a06a3 | 120 | options); |
373a8247 PM |
121 | i = len; |
122 | } | |
123 | else | |
124 | { | |
125 | fprintf_filtered (stream, "{"); | |
126 | /* If this is a virtual function table, print the 0th | |
127 | entry specially, and the rest of the members normally. */ | |
128 | if (pascal_object_is_vtbl_ptr_type (elttype)) | |
129 | { | |
130 | i = 1; | |
131 | fprintf_filtered (stream, "%d vtable entries", len - 1); | |
132 | } | |
133 | else | |
134 | { | |
135 | i = 0; | |
136 | } | |
e8b24d9f | 137 | val_print_array_elements (type, embedded_offset, |
3e43a32a MS |
138 | address, stream, recurse, |
139 | original_value, options, i); | |
373a8247 PM |
140 | fprintf_filtered (stream, "}"); |
141 | } | |
142 | break; | |
143 | } | |
144 | /* Array of unspecified length: treat like pointer to first elt. */ | |
13163d80 | 145 | addr = address + embedded_offset; |
373a8247 PM |
146 | goto print_unpacked_pointer; |
147 | ||
148 | case TYPE_CODE_PTR: | |
79a45b7d | 149 | if (options->format && options->format != 's') |
373a8247 | 150 | { |
e8b24d9f | 151 | val_print_scalar_formatted (type, embedded_offset, |
ab2188aa | 152 | original_value, options, 0, stream); |
373a8247 PM |
153 | break; |
154 | } | |
79a45b7d | 155 | if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type)) |
373a8247 PM |
156 | { |
157 | /* Print the unmangled name if desired. */ | |
158 | /* Print vtable entry - we only get here if we ARE using | |
0df8b418 | 159 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */ |
b276f1bb | 160 | /* Extract the address, assume that it is unsigned. */ |
e17a4113 UW |
161 | addr = extract_unsigned_integer (valaddr + embedded_offset, |
162 | TYPE_LENGTH (type), byte_order); | |
edf0c1b7 | 163 | print_address_demangle (options, gdbarch, addr, stream, demangle); |
373a8247 PM |
164 | break; |
165 | } | |
91e8df85 | 166 | check_typedef (TYPE_TARGET_TYPE (type)); |
e13eedd5 PM |
167 | |
168 | addr = unpack_pointer (type, valaddr + embedded_offset); | |
169 | print_unpacked_pointer: | |
170 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
171 | ||
172 | if (TYPE_CODE (elttype) == TYPE_CODE_FUNC) | |
373a8247 | 173 | { |
e13eedd5 | 174 | /* Try to print what function it points to. */ |
edf0c1b7 | 175 | print_address_demangle (options, gdbarch, addr, stream, demangle); |
d3eab38a | 176 | return; |
e13eedd5 | 177 | } |
373a8247 | 178 | |
e13eedd5 PM |
179 | if (options->addressprint && options->format != 's') |
180 | { | |
181 | fputs_filtered (paddress (gdbarch, addr), stream); | |
b012acdd | 182 | want_space = 1; |
e13eedd5 | 183 | } |
373a8247 | 184 | |
e13eedd5 PM |
185 | /* For a pointer to char or unsigned char, also print the string |
186 | pointed to, unless pointer is null. */ | |
187 | if (((TYPE_LENGTH (elttype) == 1 | |
188 | && (TYPE_CODE (elttype) == TYPE_CODE_INT | |
189 | || TYPE_CODE (elttype) == TYPE_CODE_CHAR)) | |
190 | || ((TYPE_LENGTH (elttype) == 2 || TYPE_LENGTH (elttype) == 4) | |
191 | && TYPE_CODE (elttype) == TYPE_CODE_CHAR)) | |
192 | && (options->format == 0 || options->format == 's') | |
193 | && addr != 0) | |
194 | { | |
b012acdd TT |
195 | if (want_space) |
196 | fputs_filtered (" ", stream); | |
0df8b418 | 197 | /* No wide string yet. */ |
09ca9e2e | 198 | i = val_print_string (elttype, NULL, addr, -1, stream, options); |
e13eedd5 | 199 | } |
0df8b418 | 200 | /* Also for pointers to pascal strings. */ |
e13eedd5 PM |
201 | /* Note: this is Free Pascal specific: |
202 | as GDB does not recognize stabs pascal strings | |
203 | Pascal strings are mapped to records | |
0df8b418 | 204 | with lowercase names PM. */ |
e13eedd5 PM |
205 | if (is_pascal_string_type (elttype, &length_pos, &length_size, |
206 | &string_pos, &char_type, NULL) | |
207 | && addr != 0) | |
208 | { | |
209 | ULONGEST string_length; | |
7c543f7b | 210 | gdb_byte *buffer; |
ad3bbd48 | 211 | |
b012acdd TT |
212 | if (want_space) |
213 | fputs_filtered (" ", stream); | |
7c543f7b | 214 | buffer = (gdb_byte *) xmalloc (length_size); |
e13eedd5 PM |
215 | read_memory (addr + length_pos, buffer, length_size); |
216 | string_length = extract_unsigned_integer (buffer, length_size, | |
217 | byte_order); | |
218 | xfree (buffer); | |
09ca9e2e TT |
219 | i = val_print_string (char_type, NULL, |
220 | addr + string_pos, string_length, | |
221 | stream, options); | |
e13eedd5 PM |
222 | } |
223 | else if (pascal_object_is_vtbl_member (type)) | |
224 | { | |
0df8b418 | 225 | /* Print vtbl's nicely. */ |
3e43a32a MS |
226 | CORE_ADDR vt_address = unpack_pointer (type, |
227 | valaddr + embedded_offset); | |
7cbd4a93 | 228 | struct bound_minimal_symbol msymbol = |
ad3bbd48 MS |
229 | lookup_minimal_symbol_by_pc (vt_address); |
230 | ||
9cb709b6 TT |
231 | /* If 'symbol_print' is set, we did the work above. */ |
232 | if (!options->symbol_print | |
7cbd4a93 | 233 | && (msymbol.minsym != NULL) |
77e371c0 | 234 | && (vt_address == BMSYMBOL_VALUE_ADDRESS (msymbol))) |
373a8247 | 235 | { |
b012acdd TT |
236 | if (want_space) |
237 | fputs_filtered (" ", stream); | |
238 | fputs_filtered ("<", stream); | |
efd66ac6 | 239 | fputs_filtered (MSYMBOL_PRINT_NAME (msymbol.minsym), stream); |
e13eedd5 | 240 | fputs_filtered (">", stream); |
b012acdd | 241 | want_space = 1; |
373a8247 | 242 | } |
e13eedd5 | 243 | if (vt_address && options->vtblprint) |
373a8247 | 244 | { |
e13eedd5 | 245 | struct value *vt_val; |
be903358 | 246 | struct symbol *wsym = NULL; |
e13eedd5 | 247 | struct type *wtype; |
be903358 | 248 | struct block *block = NULL; |
373a8247 | 249 | |
b012acdd TT |
250 | if (want_space) |
251 | fputs_filtered (" ", stream); | |
252 | ||
7cbd4a93 | 253 | if (msymbol.minsym != NULL) |
de63c46b PA |
254 | { |
255 | const char *search_name | |
256 | = MSYMBOL_SEARCH_NAME (msymbol.minsym); | |
257 | wsym = lookup_symbol_search_name (search_name, block, | |
258 | VAR_DOMAIN).symbol; | |
259 | } | |
e13eedd5 PM |
260 | |
261 | if (wsym) | |
373a8247 | 262 | { |
e13eedd5 | 263 | wtype = SYMBOL_TYPE (wsym); |
373a8247 | 264 | } |
e13eedd5 | 265 | else |
373a8247 | 266 | { |
e13eedd5 PM |
267 | wtype = TYPE_TARGET_TYPE (type); |
268 | } | |
269 | vt_val = value_at (wtype, vt_address); | |
270 | common_val_print (vt_val, stream, recurse + 1, options, | |
271 | current_language); | |
2a998fc0 | 272 | if (options->prettyformat) |
e13eedd5 PM |
273 | { |
274 | fprintf_filtered (stream, "\n"); | |
275 | print_spaces_filtered (2 + 2 * recurse, stream); | |
373a8247 PM |
276 | } |
277 | } | |
373a8247 | 278 | } |
e13eedd5 | 279 | |
d3eab38a | 280 | return; |
373a8247 | 281 | |
373a8247 | 282 | case TYPE_CODE_REF: |
e88acd96 TT |
283 | case TYPE_CODE_ENUM: |
284 | case TYPE_CODE_FLAGS: | |
285 | case TYPE_CODE_FUNC: | |
286 | case TYPE_CODE_RANGE: | |
287 | case TYPE_CODE_INT: | |
288 | case TYPE_CODE_FLT: | |
289 | case TYPE_CODE_VOID: | |
290 | case TYPE_CODE_ERROR: | |
291 | case TYPE_CODE_UNDEF: | |
292 | case TYPE_CODE_BOOL: | |
293 | case TYPE_CODE_CHAR: | |
e8b24d9f | 294 | generic_val_print (type, embedded_offset, address, |
e88acd96 TT |
295 | stream, recurse, original_value, options, |
296 | &p_decorations); | |
373a8247 PM |
297 | break; |
298 | ||
299 | case TYPE_CODE_UNION: | |
79a45b7d | 300 | if (recurse && !options->unionprint) |
373a8247 PM |
301 | { |
302 | fprintf_filtered (stream, "{...}"); | |
303 | break; | |
304 | } | |
305 | /* Fall through. */ | |
306 | case TYPE_CODE_STRUCT: | |
79a45b7d | 307 | if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type)) |
373a8247 PM |
308 | { |
309 | /* Print the unmangled name if desired. */ | |
310 | /* Print vtable entry - we only get here if NOT using | |
0df8b418 | 311 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */ |
b276f1bb AC |
312 | /* Extract the address, assume that it is unsigned. */ |
313 | print_address_demangle | |
edf0c1b7 | 314 | (options, gdbarch, |
3e43a32a MS |
315 | extract_unsigned_integer (valaddr + embedded_offset |
316 | + TYPE_FIELD_BITPOS (type, | |
317 | VTBL_FNADDR_OFFSET) / 8, | |
318 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, | |
319 | VTBL_FNADDR_OFFSET)), | |
320 | byte_order), | |
b276f1bb | 321 | stream, demangle); |
373a8247 PM |
322 | } |
323 | else | |
324 | { | |
5598ce11 | 325 | if (is_pascal_string_type (type, &length_pos, &length_size, |
6c7a06a3 | 326 | &string_pos, &char_type, NULL)) |
373a8247 | 327 | { |
3e43a32a MS |
328 | len = extract_unsigned_integer (valaddr + embedded_offset |
329 | + length_pos, length_size, | |
330 | byte_order); | |
6ced1581 | 331 | LA_PRINT_STRING (stream, char_type, |
be759fcf PM |
332 | valaddr + embedded_offset + string_pos, |
333 | len, NULL, 0, options); | |
373a8247 PM |
334 | } |
335 | else | |
490f124f | 336 | pascal_object_print_value_fields (type, valaddr, embedded_offset, |
3e43a32a MS |
337 | address, stream, recurse, |
338 | original_value, options, | |
339 | NULL, 0); | |
373a8247 PM |
340 | } |
341 | break; | |
342 | ||
373a8247 PM |
343 | case TYPE_CODE_SET: |
344 | elttype = TYPE_INDEX_TYPE (type); | |
f168693b | 345 | elttype = check_typedef (elttype); |
74a9bb82 | 346 | if (TYPE_STUB (elttype)) |
373a8247 PM |
347 | { |
348 | fprintf_filtered (stream, "<incomplete type>"); | |
349 | gdb_flush (stream); | |
350 | break; | |
351 | } | |
352 | else | |
353 | { | |
354 | struct type *range = elttype; | |
355 | LONGEST low_bound, high_bound; | |
356 | int i; | |
373a8247 PM |
357 | int need_comma = 0; |
358 | ||
6b1755ce | 359 | fputs_filtered ("[", stream); |
373a8247 PM |
360 | |
361 | i = 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. */ | |
366 | i = 0; | |
367 | high_bound = TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1; | |
368 | TYPE_HIGH_BOUND (range) = high_bound; | |
369 | } | |
373a8247 PM |
370 | maybe_bad_bstring: |
371 | if (i < 0) | |
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 PM |
418 | } |
419 | gdb_flush (stream); | |
373a8247 PM |
420 | } |
421 | \f | |
8e069a98 | 422 | void |
79a45b7d TT |
423 | pascal_value_print (struct value *val, struct ui_file *stream, |
424 | const struct value_print_options *options) | |
373a8247 | 425 | { |
df407dfe | 426 | struct type *type = value_type (val); |
278582cb PM |
427 | struct value_print_options opts = *options; |
428 | ||
429 | opts.deref_ref = 1; | |
373a8247 PM |
430 | |
431 | /* If it is a pointer, indicate what it points to. | |
432 | ||
433 | Print type also if it is a reference. | |
434 | ||
435 | Object pascal: if it is a member pointer, we will take care | |
436 | of that when we print it. */ | |
b20a3440 PM |
437 | if (TYPE_CODE (type) == TYPE_CODE_PTR |
438 | || TYPE_CODE (type) == TYPE_CODE_REF) | |
373a8247 PM |
439 | { |
440 | /* Hack: remove (char *) for char strings. Their | |
0df8b418 | 441 | type is indicated by the quoted string anyway. */ |
6ced1581 | 442 | if (TYPE_CODE (type) == TYPE_CODE_PTR |
b20a3440 PM |
443 | && TYPE_NAME (type) == NULL |
444 | && TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL | |
6314a349 | 445 | && strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0) |
373a8247 | 446 | { |
0df8b418 | 447 | /* Print nothing. */ |
373a8247 PM |
448 | } |
449 | else | |
450 | { | |
451 | fprintf_filtered (stream, "("); | |
452 | type_print (type, "", stream, -1); | |
453 | fprintf_filtered (stream, ") "); | |
454 | } | |
455 | } | |
8e069a98 | 456 | common_val_print (val, stream, 0, &opts, current_language); |
373a8247 PM |
457 | } |
458 | ||
459 | ||
920d2a44 AC |
460 | static void |
461 | show_pascal_static_field_print (struct ui_file *file, int from_tty, | |
462 | struct cmd_list_element *c, const char *value) | |
463 | { | |
464 | fprintf_filtered (file, _("Printing of pascal static members is %s.\n"), | |
465 | value); | |
466 | } | |
373a8247 PM |
467 | |
468 | static struct obstack dont_print_vb_obstack; | |
469 | static struct obstack dont_print_statmem_obstack; | |
470 | ||
806048c6 | 471 | static void pascal_object_print_static_field (struct value *, |
79a45b7d TT |
472 | struct ui_file *, int, |
473 | const struct value_print_options *); | |
373a8247 | 474 | |
fc1a4b47 | 475 | static void pascal_object_print_value (struct type *, const gdb_byte *, |
6b850546 | 476 | LONGEST, |
79a45b7d | 477 | CORE_ADDR, struct ui_file *, int, |
e8b24d9f | 478 | struct value *, |
79a45b7d | 479 | const struct value_print_options *, |
a2bd3dcd | 480 | struct type **); |
373a8247 | 481 | |
373a8247 PM |
482 | /* It was changed to this after 2.4.5. */ |
483 | const char pascal_vtbl_ptr_name[] = | |
484 | {'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; | |
485 | ||
486 | /* Return truth value for assertion that TYPE is of the type | |
487 | "pointer to virtual function". */ | |
488 | ||
489 | int | |
fba45db2 | 490 | pascal_object_is_vtbl_ptr_type (struct type *type) |
373a8247 | 491 | { |
fe978cb0 | 492 | const char *type_name = type_name_no_tag (type); |
373a8247 | 493 | |
fe978cb0 PA |
494 | return (type_name != NULL |
495 | && strcmp (type_name, pascal_vtbl_ptr_name) == 0); | |
373a8247 PM |
496 | } |
497 | ||
498 | /* Return truth value for the assertion that TYPE is of the type | |
499 | "pointer to virtual function table". */ | |
500 | ||
501 | int | |
fba45db2 | 502 | pascal_object_is_vtbl_member (struct type *type) |
373a8247 PM |
503 | { |
504 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
505 | { | |
506 | type = TYPE_TARGET_TYPE (type); | |
507 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
508 | { | |
509 | type = TYPE_TARGET_TYPE (type); | |
0df8b418 MS |
510 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* If not using |
511 | thunks. */ | |
512 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* If using thunks. */ | |
373a8247 PM |
513 | { |
514 | /* Virtual functions tables are full of pointers | |
0df8b418 | 515 | to virtual functions. */ |
373a8247 PM |
516 | return pascal_object_is_vtbl_ptr_type (type); |
517 | } | |
518 | } | |
519 | } | |
520 | return 0; | |
521 | } | |
522 | ||
a2bd3dcd AC |
523 | /* Mutually recursive subroutines of pascal_object_print_value and |
524 | c_val_print to print out a structure's fields: | |
525 | pascal_object_print_value_fields and pascal_object_print_value. | |
373a8247 | 526 | |
79a45b7d | 527 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and OPTIONS have the |
373a8247 PM |
528 | same meanings as in pascal_object_print_value and c_val_print. |
529 | ||
530 | DONT_PRINT is an array of baseclass types that we | |
531 | should not print, or zero if called from top level. */ | |
532 | ||
533 | void | |
fc1a4b47 | 534 | pascal_object_print_value_fields (struct type *type, const gdb_byte *valaddr, |
6b850546 | 535 | LONGEST offset, |
fba45db2 | 536 | CORE_ADDR address, struct ui_file *stream, |
79a45b7d | 537 | int recurse, |
e8b24d9f | 538 | struct value *val, |
79a45b7d | 539 | const struct value_print_options *options, |
fba45db2 KB |
540 | struct type **dont_print_vb, |
541 | int dont_print_statmem) | |
373a8247 PM |
542 | { |
543 | int i, len, n_baseclasses; | |
79f33898 SM |
544 | char *last_dont_print |
545 | = (char *) obstack_next_free (&dont_print_statmem_obstack); | |
373a8247 | 546 | |
f168693b | 547 | type = check_typedef (type); |
373a8247 PM |
548 | |
549 | fprintf_filtered (stream, "{"); | |
550 | len = TYPE_NFIELDS (type); | |
551 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
552 | ||
553 | /* Print out baseclasses such that we don't print | |
554 | duplicates of virtual baseclasses. */ | |
555 | if (n_baseclasses > 0) | |
490f124f PA |
556 | pascal_object_print_value (type, valaddr, offset, address, |
557 | stream, recurse + 1, val, | |
558 | options, dont_print_vb); | |
373a8247 PM |
559 | |
560 | if (!len && n_baseclasses == 1) | |
561 | fprintf_filtered (stream, "<No data fields>"); | |
562 | else | |
563 | { | |
c1b6e682 | 564 | struct obstack tmp_obstack = dont_print_statmem_obstack; |
373a8247 PM |
565 | int fields_seen = 0; |
566 | ||
567 | if (dont_print_statmem == 0) | |
568 | { | |
569 | /* If we're at top level, carve out a completely fresh | |
570 | chunk of the obstack and use that until this particular | |
571 | invocation returns. */ | |
373a8247 PM |
572 | obstack_finish (&dont_print_statmem_obstack); |
573 | } | |
574 | ||
575 | for (i = n_baseclasses; i < len; i++) | |
576 | { | |
577 | /* If requested, skip printing of static fields. */ | |
79a45b7d | 578 | if (!options->pascal_static_field_print |
d6a843b5 | 579 | && field_is_static (&TYPE_FIELD (type, i))) |
373a8247 PM |
580 | continue; |
581 | if (fields_seen) | |
582 | fprintf_filtered (stream, ", "); | |
583 | else if (n_baseclasses > 0) | |
584 | { | |
2a998fc0 | 585 | if (options->prettyformat) |
373a8247 PM |
586 | { |
587 | fprintf_filtered (stream, "\n"); | |
588 | print_spaces_filtered (2 + 2 * recurse, stream); | |
589 | fputs_filtered ("members of ", stream); | |
590 | fputs_filtered (type_name_no_tag (type), stream); | |
591 | fputs_filtered (": ", stream); | |
592 | } | |
593 | } | |
594 | fields_seen = 1; | |
595 | ||
2a998fc0 | 596 | if (options->prettyformat) |
373a8247 PM |
597 | { |
598 | fprintf_filtered (stream, "\n"); | |
599 | print_spaces_filtered (2 + 2 * recurse, stream); | |
600 | } | |
601 | else | |
602 | { | |
603 | wrap_here (n_spaces (2 + 2 * recurse)); | |
604 | } | |
e93a8774 TT |
605 | |
606 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
607 | ||
608 | if (field_is_static (&TYPE_FIELD (type, i))) | |
609 | fputs_filtered ("static ", stream); | |
610 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
611 | language_cplus, | |
612 | DMGL_PARAMS | DMGL_ANSI); | |
613 | annotate_field_name_end (); | |
614 | fputs_filtered (" = ", stream); | |
615 | annotate_field_value (); | |
373a8247 | 616 | |
d6a843b5 JK |
617 | if (!field_is_static (&TYPE_FIELD (type, i)) |
618 | && TYPE_FIELD_PACKED (type, i)) | |
373a8247 | 619 | { |
6943961c | 620 | struct value *v; |
373a8247 PM |
621 | |
622 | /* Bitfields require special handling, especially due to byte | |
623 | order problems. */ | |
624 | if (TYPE_FIELD_IGNORE (type, i)) | |
625 | { | |
626 | fputs_filtered ("<optimized out or zero length>", stream); | |
627 | } | |
8cf6f0b1 TT |
628 | else if (value_bits_synthetic_pointer (val, |
629 | TYPE_FIELD_BITPOS (type, | |
630 | i), | |
631 | TYPE_FIELD_BITSIZE (type, | |
632 | i))) | |
633 | { | |
634 | fputs_filtered (_("<synthetic pointer>"), stream); | |
635 | } | |
373a8247 PM |
636 | else |
637 | { | |
79a45b7d | 638 | struct value_print_options opts = *options; |
ad3bbd48 | 639 | |
5467c6c8 | 640 | v = value_field_bitfield (type, i, valaddr, offset, val); |
373a8247 | 641 | |
79a45b7d TT |
642 | opts.deref_ref = 0; |
643 | common_val_print (v, stream, recurse + 1, &opts, | |
644 | current_language); | |
373a8247 PM |
645 | } |
646 | } | |
647 | else | |
648 | { | |
649 | if (TYPE_FIELD_IGNORE (type, i)) | |
650 | { | |
651 | fputs_filtered ("<optimized out or zero length>", stream); | |
652 | } | |
d6a843b5 | 653 | else if (field_is_static (&TYPE_FIELD (type, i))) |
373a8247 | 654 | { |
3e43a32a | 655 | /* struct value *v = value_static_field (type, i); |
0df8b418 | 656 | v4.17 specific. */ |
6943961c | 657 | struct value *v; |
ad3bbd48 | 658 | |
5467c6c8 | 659 | v = value_field_bitfield (type, i, valaddr, offset, val); |
373a8247 PM |
660 | |
661 | if (v == NULL) | |
901461f8 | 662 | val_print_optimized_out (NULL, stream); |
373a8247 | 663 | else |
79a45b7d TT |
664 | pascal_object_print_static_field (v, stream, recurse + 1, |
665 | options); | |
373a8247 PM |
666 | } |
667 | else | |
668 | { | |
79a45b7d | 669 | struct value_print_options opts = *options; |
ad3bbd48 | 670 | |
79a45b7d | 671 | opts.deref_ref = 0; |
373a8247 PM |
672 | /* val_print (TYPE_FIELD_TYPE (type, i), |
673 | valaddr + TYPE_FIELD_BITPOS (type, i) / 8, | |
674 | address + TYPE_FIELD_BITPOS (type, i) / 8, 0, | |
675 | stream, format, 0, recurse + 1, pretty); */ | |
676 | val_print (TYPE_FIELD_TYPE (type, i), | |
e8b24d9f | 677 | offset + TYPE_FIELD_BITPOS (type, i) / 8, |
490f124f | 678 | address, stream, recurse + 1, val, &opts, |
d8ca156b | 679 | current_language); |
373a8247 PM |
680 | } |
681 | } | |
682 | annotate_field_end (); | |
683 | } | |
684 | ||
685 | if (dont_print_statmem == 0) | |
686 | { | |
687 | /* Free the space used to deal with the printing | |
688 | of the members from top level. */ | |
689 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
690 | dont_print_statmem_obstack = tmp_obstack; | |
691 | } | |
692 | ||
2a998fc0 | 693 | if (options->prettyformat) |
373a8247 PM |
694 | { |
695 | fprintf_filtered (stream, "\n"); | |
696 | print_spaces_filtered (2 * recurse, stream); | |
697 | } | |
698 | } | |
699 | fprintf_filtered (stream, "}"); | |
700 | } | |
701 | ||
702 | /* Special val_print routine to avoid printing multiple copies of virtual | |
703 | baseclasses. */ | |
704 | ||
7080f20f | 705 | static void |
fc1a4b47 | 706 | pascal_object_print_value (struct type *type, const gdb_byte *valaddr, |
6b850546 | 707 | LONGEST offset, |
a2bd3dcd | 708 | CORE_ADDR address, struct ui_file *stream, |
79a45b7d | 709 | int recurse, |
e8b24d9f | 710 | struct value *val, |
79a45b7d | 711 | const struct value_print_options *options, |
fba45db2 | 712 | struct type **dont_print_vb) |
373a8247 | 713 | { |
373a8247 | 714 | struct type **last_dont_print |
ad3bbd48 | 715 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); |
c1b6e682 | 716 | struct obstack tmp_obstack = dont_print_vb_obstack; |
373a8247 PM |
717 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); |
718 | ||
719 | if (dont_print_vb == 0) | |
720 | { | |
721 | /* If we're at top level, carve out a completely fresh | |
722 | chunk of the obstack and use that until this particular | |
723 | invocation returns. */ | |
373a8247 PM |
724 | /* Bump up the high-water mark. Now alpha is omega. */ |
725 | obstack_finish (&dont_print_vb_obstack); | |
726 | } | |
727 | ||
728 | for (i = 0; i < n_baseclasses; i++) | |
729 | { | |
6b850546 | 730 | LONGEST boffset = 0; |
373a8247 | 731 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); |
0d5cff50 | 732 | const char *basename = type_name_no_tag (baseclass); |
8af8e3bc | 733 | const gdb_byte *base_valaddr = NULL; |
6b850546 | 734 | LONGEST thisoffset; |
8af8e3bc | 735 | int skip = 0; |
49663d05 | 736 | gdb::byte_vector buf; |
373a8247 PM |
737 | |
738 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
739 | { | |
740 | struct type **first_dont_print | |
ad3bbd48 | 741 | = (struct type **) obstack_base (&dont_print_vb_obstack); |
373a8247 PM |
742 | |
743 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) | |
ad3bbd48 | 744 | - first_dont_print; |
373a8247 PM |
745 | |
746 | while (--j >= 0) | |
747 | if (baseclass == first_dont_print[j]) | |
748 | goto flush_it; | |
749 | ||
750 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
751 | } | |
752 | ||
490f124f PA |
753 | thisoffset = offset; |
754 | ||
492d29ea | 755 | TRY |
8af8e3bc PA |
756 | { |
757 | boffset = baseclass_offset (type, i, valaddr, offset, address, val); | |
758 | } | |
492d29ea | 759 | CATCH (ex, RETURN_MASK_ERROR) |
8af8e3bc | 760 | { |
7556d4a4 PA |
761 | if (ex.error == NOT_AVAILABLE_ERROR) |
762 | skip = -1; | |
763 | else | |
764 | skip = 1; | |
765 | } | |
492d29ea | 766 | END_CATCH |
8af8e3bc | 767 | |
7556d4a4 PA |
768 | if (skip == 0) |
769 | { | |
8af8e3bc PA |
770 | /* The virtual base class pointer might have been clobbered by the |
771 | user program. Make sure that it still points to a valid memory | |
772 | location. */ | |
773 | ||
774 | if (boffset < 0 || boffset >= TYPE_LENGTH (type)) | |
775 | { | |
49663d05 | 776 | buf.resize (TYPE_LENGTH (baseclass)); |
6c18f3e0 | 777 | |
49663d05 TT |
778 | base_valaddr = buf.data (); |
779 | if (target_read_memory (address + boffset, buf.data (), | |
8af8e3bc PA |
780 | TYPE_LENGTH (baseclass)) != 0) |
781 | skip = 1; | |
782 | address = address + boffset; | |
783 | thisoffset = 0; | |
784 | boffset = 0; | |
785 | } | |
786 | else | |
787 | base_valaddr = valaddr; | |
788 | } | |
373a8247 | 789 | |
2a998fc0 | 790 | if (options->prettyformat) |
373a8247 PM |
791 | { |
792 | fprintf_filtered (stream, "\n"); | |
793 | print_spaces_filtered (2 * recurse, stream); | |
794 | } | |
795 | fputs_filtered ("<", stream); | |
796 | /* Not sure what the best notation is in the case where there is no | |
797 | baseclass name. */ | |
798 | ||
799 | fputs_filtered (basename ? basename : "", stream); | |
800 | fputs_filtered ("> = ", stream); | |
801 | ||
8af8e3bc PA |
802 | if (skip < 0) |
803 | val_print_unavailable (stream); | |
804 | else if (skip > 0) | |
805 | val_print_invalid_address (stream); | |
373a8247 | 806 | else |
3e43a32a | 807 | pascal_object_print_value_fields (baseclass, base_valaddr, |
490f124f PA |
808 | thisoffset + boffset, address, |
809 | stream, recurse, val, options, | |
373a8247 PM |
810 | (struct type **) obstack_base (&dont_print_vb_obstack), |
811 | 0); | |
812 | fputs_filtered (", ", stream); | |
813 | ||
814 | flush_it: | |
815 | ; | |
816 | } | |
817 | ||
818 | if (dont_print_vb == 0) | |
819 | { | |
820 | /* Free the space used to deal with the printing | |
821 | of this type from top level. */ | |
822 | obstack_free (&dont_print_vb_obstack, last_dont_print); | |
823 | /* Reset watermark so that we can continue protecting | |
824 | ourselves from whatever we were protecting ourselves. */ | |
825 | dont_print_vb_obstack = tmp_obstack; | |
826 | } | |
827 | } | |
828 | ||
829 | /* Print value of a static member. | |
830 | To avoid infinite recursion when printing a class that contains | |
831 | a static instance of the class, we keep the addresses of all printed | |
832 | static member classes in an obstack and refuse to print them more | |
833 | than once. | |
834 | ||
79a45b7d | 835 | VAL contains the value to print, STREAM, RECURSE, and OPTIONS |
373a8247 PM |
836 | have the same meanings as in c_val_print. */ |
837 | ||
838 | static void | |
806048c6 | 839 | pascal_object_print_static_field (struct value *val, |
79a45b7d TT |
840 | struct ui_file *stream, |
841 | int recurse, | |
842 | const struct value_print_options *options) | |
373a8247 | 843 | { |
806048c6 | 844 | struct type *type = value_type (val); |
79a45b7d | 845 | struct value_print_options opts; |
806048c6 | 846 | |
686d4def PA |
847 | if (value_entirely_optimized_out (val)) |
848 | { | |
849 | val_print_optimized_out (val, stream); | |
850 | return; | |
851 | } | |
852 | ||
373a8247 PM |
853 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
854 | { | |
42ae5230 | 855 | CORE_ADDR *first_dont_print, addr; |
373a8247 PM |
856 | int i; |
857 | ||
858 | first_dont_print | |
859 | = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); | |
860 | i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) | |
861 | - first_dont_print; | |
862 | ||
863 | while (--i >= 0) | |
864 | { | |
42ae5230 | 865 | if (value_address (val) == first_dont_print[i]) |
373a8247 | 866 | { |
3e43a32a MS |
867 | fputs_filtered ("\ |
868 | <same as static member of an already seen type>", | |
373a8247 PM |
869 | stream); |
870 | return; | |
871 | } | |
872 | } | |
873 | ||
42ae5230 TT |
874 | addr = value_address (val); |
875 | obstack_grow (&dont_print_statmem_obstack, (char *) &addr, | |
373a8247 PM |
876 | sizeof (CORE_ADDR)); |
877 | ||
f168693b | 878 | type = check_typedef (type); |
490f124f PA |
879 | pascal_object_print_value_fields (type, |
880 | value_contents_for_printing (val), | |
881 | value_embedded_offset (val), | |
882 | addr, | |
883 | stream, recurse, | |
884 | val, options, NULL, 1); | |
373a8247 PM |
885 | return; |
886 | } | |
79a45b7d TT |
887 | |
888 | opts = *options; | |
889 | opts.deref_ref = 0; | |
890 | common_val_print (val, stream, recurse, &opts, current_language); | |
373a8247 PM |
891 | } |
892 | ||
373a8247 | 893 | void |
fba45db2 | 894 | _initialize_pascal_valprint (void) |
373a8247 | 895 | { |
5bf193a2 | 896 | add_setshow_boolean_cmd ("pascal_static-members", class_support, |
79a45b7d | 897 | &user_print_options.pascal_static_field_print, _("\ |
5bf193a2 AC |
898 | Set printing of pascal static members."), _("\ |
899 | Show printing of pascal static members."), NULL, | |
900 | NULL, | |
920d2a44 | 901 | show_pascal_static_field_print, |
5bf193a2 | 902 | &setprintlist, &showprintlist); |
373a8247 | 903 | } |