Commit | Line | Data |
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373a8247 | 1 | /* Support for printing Pascal values for GDB, the GNU debugger. |
5bcca90b | 2 | |
28e7fd62 | 3 | Copyright (C) 2000-2013 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" |
8af8e3bc | 40 | #include "exceptions.h" |
373a8247 PM |
41 | \f |
42 | ||
e88acd96 TT |
43 | /* Decorations for Pascal. */ |
44 | ||
45 | static const struct generic_val_print_decorations p_decorations = | |
46 | { | |
47 | "", | |
48 | " + ", | |
49 | " * I", | |
50 | "true", | |
51 | "false", | |
52 | "void" | |
53 | }; | |
54 | ||
32b72a42 | 55 | /* See val_print for a description of the various parameters of this |
d3eab38a | 56 | function; they are identical. */ |
373a8247 | 57 | |
d3eab38a | 58 | void |
fc1a4b47 | 59 | pascal_val_print (struct type *type, const gdb_byte *valaddr, |
a2bd3dcd | 60 | int embedded_offset, CORE_ADDR address, |
79a45b7d | 61 | struct ui_file *stream, int recurse, |
0e03807e | 62 | const struct value *original_value, |
79a45b7d | 63 | const struct value_print_options *options) |
373a8247 | 64 | { |
5af949e3 | 65 | struct gdbarch *gdbarch = get_type_arch (type); |
e17a4113 | 66 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
52f0bd74 | 67 | unsigned int i = 0; /* Number of characters printed */ |
373a8247 | 68 | unsigned len; |
df178451 | 69 | LONGEST low_bound, high_bound; |
373a8247 PM |
70 | struct type *elttype; |
71 | unsigned eltlen; | |
5598ce11 | 72 | int length_pos, length_size, string_pos; |
6c7a06a3 | 73 | struct type *char_type; |
373a8247 | 74 | CORE_ADDR addr; |
b012acdd | 75 | int want_space = 0; |
373a8247 PM |
76 | |
77 | CHECK_TYPEDEF (type); | |
78 | switch (TYPE_CODE (type)) | |
79 | { | |
80 | case TYPE_CODE_ARRAY: | |
6ced1581 | 81 | if (get_array_bounds (type, &low_bound, &high_bound)) |
373a8247 | 82 | { |
8148cf8d | 83 | len = high_bound - low_bound + 1; |
373a8247 PM |
84 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); |
85 | eltlen = TYPE_LENGTH (elttype); | |
79a45b7d | 86 | if (options->prettyprint_arrays) |
373a8247 PM |
87 | { |
88 | print_spaces_filtered (2 + 2 * recurse, stream); | |
89 | } | |
6e354e5e PM |
90 | /* If 's' format is used, try to print out as string. |
91 | If no format is given, print as string if element type | |
92 | is of TYPE_CODE_CHAR and element size is 1,2 or 4. */ | |
93 | if (options->format == 's' | |
94 | || ((eltlen == 1 || eltlen == 2 || eltlen == 4) | |
95 | && TYPE_CODE (elttype) == TYPE_CODE_CHAR | |
96 | && options->format == 0)) | |
373a8247 PM |
97 | { |
98 | /* If requested, look for the first null char and only print | |
99 | elements up to it. */ | |
79a45b7d | 100 | if (options->stop_print_at_null) |
373a8247 PM |
101 | { |
102 | unsigned int temp_len; | |
103 | ||
0df8b418 | 104 | /* Look for a NULL char. */ |
373a8247 | 105 | for (temp_len = 0; |
58159490 | 106 | extract_unsigned_integer (valaddr + embedded_offset + |
e17a4113 UW |
107 | temp_len * eltlen, eltlen, |
108 | byte_order) | |
79a45b7d | 109 | && temp_len < len && temp_len < options->print_max; |
373a8247 PM |
110 | temp_len++); |
111 | len = temp_len; | |
112 | } | |
113 | ||
6c7a06a3 | 114 | LA_PRINT_STRING (stream, TYPE_TARGET_TYPE (type), |
be759fcf | 115 | valaddr + embedded_offset, len, NULL, 0, |
6c7a06a3 | 116 | options); |
373a8247 PM |
117 | i = len; |
118 | } | |
119 | else | |
120 | { | |
121 | fprintf_filtered (stream, "{"); | |
122 | /* If this is a virtual function table, print the 0th | |
123 | entry specially, and the rest of the members normally. */ | |
124 | if (pascal_object_is_vtbl_ptr_type (elttype)) | |
125 | { | |
126 | i = 1; | |
127 | fprintf_filtered (stream, "%d vtable entries", len - 1); | |
128 | } | |
129 | else | |
130 | { | |
131 | i = 0; | |
132 | } | |
490f124f | 133 | val_print_array_elements (type, valaddr, embedded_offset, |
3e43a32a MS |
134 | address, stream, recurse, |
135 | original_value, options, i); | |
373a8247 PM |
136 | fprintf_filtered (stream, "}"); |
137 | } | |
138 | break; | |
139 | } | |
140 | /* Array of unspecified length: treat like pointer to first elt. */ | |
13163d80 | 141 | addr = address + embedded_offset; |
373a8247 PM |
142 | goto print_unpacked_pointer; |
143 | ||
144 | case TYPE_CODE_PTR: | |
79a45b7d | 145 | if (options->format && options->format != 's') |
373a8247 | 146 | { |
ab2188aa PA |
147 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
148 | original_value, options, 0, stream); | |
373a8247 PM |
149 | break; |
150 | } | |
79a45b7d | 151 | if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type)) |
373a8247 PM |
152 | { |
153 | /* Print the unmangled name if desired. */ | |
154 | /* Print vtable entry - we only get here if we ARE using | |
0df8b418 | 155 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */ |
b276f1bb | 156 | /* Extract the address, assume that it is unsigned. */ |
e17a4113 UW |
157 | addr = extract_unsigned_integer (valaddr + embedded_offset, |
158 | TYPE_LENGTH (type), byte_order); | |
edf0c1b7 | 159 | print_address_demangle (options, gdbarch, addr, stream, demangle); |
373a8247 PM |
160 | break; |
161 | } | |
91e8df85 | 162 | check_typedef (TYPE_TARGET_TYPE (type)); |
e13eedd5 PM |
163 | |
164 | addr = unpack_pointer (type, valaddr + embedded_offset); | |
165 | print_unpacked_pointer: | |
166 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
167 | ||
168 | if (TYPE_CODE (elttype) == TYPE_CODE_FUNC) | |
373a8247 | 169 | { |
e13eedd5 | 170 | /* Try to print what function it points to. */ |
edf0c1b7 | 171 | print_address_demangle (options, gdbarch, addr, stream, demangle); |
d3eab38a | 172 | return; |
e13eedd5 | 173 | } |
373a8247 | 174 | |
e13eedd5 PM |
175 | if (options->addressprint && options->format != 's') |
176 | { | |
177 | fputs_filtered (paddress (gdbarch, addr), stream); | |
b012acdd | 178 | want_space = 1; |
e13eedd5 | 179 | } |
373a8247 | 180 | |
e13eedd5 PM |
181 | /* For a pointer to char or unsigned char, also print the string |
182 | pointed to, unless pointer is null. */ | |
183 | if (((TYPE_LENGTH (elttype) == 1 | |
184 | && (TYPE_CODE (elttype) == TYPE_CODE_INT | |
185 | || TYPE_CODE (elttype) == TYPE_CODE_CHAR)) | |
186 | || ((TYPE_LENGTH (elttype) == 2 || TYPE_LENGTH (elttype) == 4) | |
187 | && TYPE_CODE (elttype) == TYPE_CODE_CHAR)) | |
188 | && (options->format == 0 || options->format == 's') | |
189 | && addr != 0) | |
190 | { | |
b012acdd TT |
191 | if (want_space) |
192 | fputs_filtered (" ", stream); | |
0df8b418 | 193 | /* No wide string yet. */ |
09ca9e2e | 194 | i = val_print_string (elttype, NULL, addr, -1, stream, options); |
e13eedd5 | 195 | } |
0df8b418 | 196 | /* Also for pointers to pascal strings. */ |
e13eedd5 PM |
197 | /* Note: this is Free Pascal specific: |
198 | as GDB does not recognize stabs pascal strings | |
199 | Pascal strings are mapped to records | |
0df8b418 | 200 | with lowercase names PM. */ |
e13eedd5 PM |
201 | if (is_pascal_string_type (elttype, &length_pos, &length_size, |
202 | &string_pos, &char_type, NULL) | |
203 | && addr != 0) | |
204 | { | |
205 | ULONGEST string_length; | |
206 | void *buffer; | |
ad3bbd48 | 207 | |
b012acdd TT |
208 | if (want_space) |
209 | fputs_filtered (" ", stream); | |
e13eedd5 PM |
210 | buffer = xmalloc (length_size); |
211 | read_memory (addr + length_pos, buffer, length_size); | |
212 | string_length = extract_unsigned_integer (buffer, length_size, | |
213 | byte_order); | |
214 | xfree (buffer); | |
09ca9e2e TT |
215 | i = val_print_string (char_type, NULL, |
216 | addr + string_pos, string_length, | |
217 | stream, options); | |
e13eedd5 PM |
218 | } |
219 | else if (pascal_object_is_vtbl_member (type)) | |
220 | { | |
0df8b418 | 221 | /* Print vtbl's nicely. */ |
3e43a32a MS |
222 | CORE_ADDR vt_address = unpack_pointer (type, |
223 | valaddr + embedded_offset); | |
e13eedd5 | 224 | struct minimal_symbol *msymbol = |
ad3bbd48 MS |
225 | lookup_minimal_symbol_by_pc (vt_address); |
226 | ||
9cb709b6 TT |
227 | /* If 'symbol_print' is set, we did the work above. */ |
228 | if (!options->symbol_print | |
229 | && (msymbol != NULL) | |
e13eedd5 | 230 | && (vt_address == SYMBOL_VALUE_ADDRESS (msymbol))) |
373a8247 | 231 | { |
b012acdd TT |
232 | if (want_space) |
233 | fputs_filtered (" ", stream); | |
234 | fputs_filtered ("<", stream); | |
e13eedd5 PM |
235 | fputs_filtered (SYMBOL_PRINT_NAME (msymbol), stream); |
236 | fputs_filtered (">", stream); | |
b012acdd | 237 | want_space = 1; |
373a8247 | 238 | } |
e13eedd5 | 239 | if (vt_address && options->vtblprint) |
373a8247 | 240 | { |
e13eedd5 PM |
241 | struct value *vt_val; |
242 | struct symbol *wsym = (struct symbol *) NULL; | |
243 | struct type *wtype; | |
244 | struct block *block = (struct block *) NULL; | |
1993b719 | 245 | struct field_of_this_result is_this_fld; |
373a8247 | 246 | |
b012acdd TT |
247 | if (want_space) |
248 | fputs_filtered (" ", stream); | |
249 | ||
e13eedd5 PM |
250 | if (msymbol != NULL) |
251 | wsym = lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), block, | |
252 | VAR_DOMAIN, &is_this_fld); | |
253 | ||
254 | if (wsym) | |
373a8247 | 255 | { |
e13eedd5 | 256 | wtype = SYMBOL_TYPE (wsym); |
373a8247 | 257 | } |
e13eedd5 | 258 | else |
373a8247 | 259 | { |
e13eedd5 PM |
260 | wtype = TYPE_TARGET_TYPE (type); |
261 | } | |
262 | vt_val = value_at (wtype, vt_address); | |
263 | common_val_print (vt_val, stream, recurse + 1, options, | |
264 | current_language); | |
265 | if (options->pretty) | |
266 | { | |
267 | fprintf_filtered (stream, "\n"); | |
268 | print_spaces_filtered (2 + 2 * recurse, stream); | |
373a8247 PM |
269 | } |
270 | } | |
373a8247 | 271 | } |
e13eedd5 | 272 | |
d3eab38a | 273 | return; |
373a8247 | 274 | |
373a8247 | 275 | case TYPE_CODE_REF: |
e88acd96 TT |
276 | case TYPE_CODE_ENUM: |
277 | case TYPE_CODE_FLAGS: | |
278 | case TYPE_CODE_FUNC: | |
279 | case TYPE_CODE_RANGE: | |
280 | case TYPE_CODE_INT: | |
281 | case TYPE_CODE_FLT: | |
282 | case TYPE_CODE_VOID: | |
283 | case TYPE_CODE_ERROR: | |
284 | case TYPE_CODE_UNDEF: | |
285 | case TYPE_CODE_BOOL: | |
286 | case TYPE_CODE_CHAR: | |
287 | generic_val_print (type, valaddr, embedded_offset, address, | |
288 | stream, recurse, original_value, options, | |
289 | &p_decorations); | |
373a8247 PM |
290 | break; |
291 | ||
292 | case TYPE_CODE_UNION: | |
79a45b7d | 293 | if (recurse && !options->unionprint) |
373a8247 PM |
294 | { |
295 | fprintf_filtered (stream, "{...}"); | |
296 | break; | |
297 | } | |
298 | /* Fall through. */ | |
299 | case TYPE_CODE_STRUCT: | |
79a45b7d | 300 | if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type)) |
373a8247 PM |
301 | { |
302 | /* Print the unmangled name if desired. */ | |
303 | /* Print vtable entry - we only get here if NOT using | |
0df8b418 | 304 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */ |
b276f1bb AC |
305 | /* Extract the address, assume that it is unsigned. */ |
306 | print_address_demangle | |
edf0c1b7 | 307 | (options, gdbarch, |
3e43a32a MS |
308 | extract_unsigned_integer (valaddr + embedded_offset |
309 | + TYPE_FIELD_BITPOS (type, | |
310 | VTBL_FNADDR_OFFSET) / 8, | |
311 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, | |
312 | VTBL_FNADDR_OFFSET)), | |
313 | byte_order), | |
b276f1bb | 314 | stream, demangle); |
373a8247 PM |
315 | } |
316 | else | |
317 | { | |
5598ce11 | 318 | if (is_pascal_string_type (type, &length_pos, &length_size, |
6c7a06a3 | 319 | &string_pos, &char_type, NULL)) |
373a8247 | 320 | { |
3e43a32a MS |
321 | len = extract_unsigned_integer (valaddr + embedded_offset |
322 | + length_pos, length_size, | |
323 | byte_order); | |
6ced1581 | 324 | LA_PRINT_STRING (stream, char_type, |
be759fcf PM |
325 | valaddr + embedded_offset + string_pos, |
326 | len, NULL, 0, options); | |
373a8247 PM |
327 | } |
328 | else | |
490f124f | 329 | pascal_object_print_value_fields (type, valaddr, embedded_offset, |
3e43a32a MS |
330 | address, stream, recurse, |
331 | original_value, options, | |
332 | NULL, 0); | |
373a8247 PM |
333 | } |
334 | break; | |
335 | ||
373a8247 PM |
336 | case TYPE_CODE_SET: |
337 | elttype = TYPE_INDEX_TYPE (type); | |
338 | CHECK_TYPEDEF (elttype); | |
74a9bb82 | 339 | if (TYPE_STUB (elttype)) |
373a8247 PM |
340 | { |
341 | fprintf_filtered (stream, "<incomplete type>"); | |
342 | gdb_flush (stream); | |
343 | break; | |
344 | } | |
345 | else | |
346 | { | |
347 | struct type *range = elttype; | |
348 | LONGEST low_bound, high_bound; | |
349 | int i; | |
373a8247 PM |
350 | int need_comma = 0; |
351 | ||
6b1755ce | 352 | fputs_filtered ("[", stream); |
373a8247 PM |
353 | |
354 | i = get_discrete_bounds (range, &low_bound, &high_bound); | |
7a081a30 PM |
355 | if (low_bound == 0 && high_bound == -1 && TYPE_LENGTH (type) > 0) |
356 | { | |
357 | /* If we know the size of the set type, we can figure out the | |
358 | maximum value. */ | |
359 | i = 0; | |
360 | high_bound = TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1; | |
361 | TYPE_HIGH_BOUND (range) = high_bound; | |
362 | } | |
373a8247 PM |
363 | maybe_bad_bstring: |
364 | if (i < 0) | |
365 | { | |
366 | fputs_filtered ("<error value>", stream); | |
367 | goto done; | |
368 | } | |
369 | ||
370 | for (i = low_bound; i <= high_bound; i++) | |
371 | { | |
3e43a32a MS |
372 | int element = value_bit_index (type, |
373 | valaddr + embedded_offset, i); | |
ad3bbd48 | 374 | |
373a8247 PM |
375 | if (element < 0) |
376 | { | |
377 | i = element; | |
378 | goto maybe_bad_bstring; | |
379 | } | |
6b1755ce | 380 | if (element) |
373a8247 PM |
381 | { |
382 | if (need_comma) | |
383 | fputs_filtered (", ", stream); | |
384 | print_type_scalar (range, i, stream); | |
385 | need_comma = 1; | |
386 | ||
3e43a32a MS |
387 | if (i + 1 <= high_bound |
388 | && value_bit_index (type, | |
389 | valaddr + embedded_offset, ++i)) | |
373a8247 PM |
390 | { |
391 | int j = i; | |
ad3bbd48 | 392 | |
373a8247 PM |
393 | fputs_filtered ("..", stream); |
394 | while (i + 1 <= high_bound | |
3e43a32a MS |
395 | && value_bit_index (type, |
396 | valaddr + embedded_offset, | |
397 | ++i)) | |
373a8247 PM |
398 | j = i; |
399 | print_type_scalar (range, j, stream); | |
400 | } | |
401 | } | |
402 | } | |
403 | done: | |
6b1755ce | 404 | fputs_filtered ("]", stream); |
373a8247 PM |
405 | } |
406 | break; | |
407 | ||
373a8247 | 408 | default: |
3e43a32a MS |
409 | error (_("Invalid pascal type code %d in symbol table."), |
410 | TYPE_CODE (type)); | |
373a8247 PM |
411 | } |
412 | gdb_flush (stream); | |
373a8247 PM |
413 | } |
414 | \f | |
8e069a98 | 415 | void |
79a45b7d TT |
416 | pascal_value_print (struct value *val, struct ui_file *stream, |
417 | const struct value_print_options *options) | |
373a8247 | 418 | { |
df407dfe | 419 | struct type *type = value_type (val); |
278582cb PM |
420 | struct value_print_options opts = *options; |
421 | ||
422 | opts.deref_ref = 1; | |
373a8247 PM |
423 | |
424 | /* If it is a pointer, indicate what it points to. | |
425 | ||
426 | Print type also if it is a reference. | |
427 | ||
428 | Object pascal: if it is a member pointer, we will take care | |
429 | of that when we print it. */ | |
b20a3440 PM |
430 | if (TYPE_CODE (type) == TYPE_CODE_PTR |
431 | || TYPE_CODE (type) == TYPE_CODE_REF) | |
373a8247 PM |
432 | { |
433 | /* Hack: remove (char *) for char strings. Their | |
0df8b418 | 434 | type is indicated by the quoted string anyway. */ |
6ced1581 | 435 | if (TYPE_CODE (type) == TYPE_CODE_PTR |
b20a3440 PM |
436 | && TYPE_NAME (type) == NULL |
437 | && TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL | |
6314a349 | 438 | && strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0) |
373a8247 | 439 | { |
0df8b418 | 440 | /* Print nothing. */ |
373a8247 PM |
441 | } |
442 | else | |
443 | { | |
444 | fprintf_filtered (stream, "("); | |
445 | type_print (type, "", stream, -1); | |
446 | fprintf_filtered (stream, ") "); | |
447 | } | |
448 | } | |
8e069a98 | 449 | common_val_print (val, stream, 0, &opts, current_language); |
373a8247 PM |
450 | } |
451 | ||
452 | ||
920d2a44 AC |
453 | static void |
454 | show_pascal_static_field_print (struct ui_file *file, int from_tty, | |
455 | struct cmd_list_element *c, const char *value) | |
456 | { | |
457 | fprintf_filtered (file, _("Printing of pascal static members is %s.\n"), | |
458 | value); | |
459 | } | |
373a8247 PM |
460 | |
461 | static struct obstack dont_print_vb_obstack; | |
462 | static struct obstack dont_print_statmem_obstack; | |
463 | ||
806048c6 | 464 | static void pascal_object_print_static_field (struct value *, |
79a45b7d TT |
465 | struct ui_file *, int, |
466 | const struct value_print_options *); | |
373a8247 | 467 | |
fc1a4b47 | 468 | static void pascal_object_print_value (struct type *, const gdb_byte *, |
490f124f | 469 | int, |
79a45b7d | 470 | CORE_ADDR, struct ui_file *, int, |
0e03807e | 471 | const struct value *, |
79a45b7d | 472 | const struct value_print_options *, |
a2bd3dcd | 473 | struct type **); |
373a8247 | 474 | |
373a8247 PM |
475 | /* It was changed to this after 2.4.5. */ |
476 | const char pascal_vtbl_ptr_name[] = | |
477 | {'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; | |
478 | ||
479 | /* Return truth value for assertion that TYPE is of the type | |
480 | "pointer to virtual function". */ | |
481 | ||
482 | int | |
fba45db2 | 483 | pascal_object_is_vtbl_ptr_type (struct type *type) |
373a8247 | 484 | { |
0d5cff50 | 485 | const char *typename = type_name_no_tag (type); |
373a8247 PM |
486 | |
487 | return (typename != NULL | |
6314a349 | 488 | && strcmp (typename, pascal_vtbl_ptr_name) == 0); |
373a8247 PM |
489 | } |
490 | ||
491 | /* Return truth value for the assertion that TYPE is of the type | |
492 | "pointer to virtual function table". */ | |
493 | ||
494 | int | |
fba45db2 | 495 | pascal_object_is_vtbl_member (struct type *type) |
373a8247 PM |
496 | { |
497 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
498 | { | |
499 | type = TYPE_TARGET_TYPE (type); | |
500 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
501 | { | |
502 | type = TYPE_TARGET_TYPE (type); | |
0df8b418 MS |
503 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* If not using |
504 | thunks. */ | |
505 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* If using thunks. */ | |
373a8247 PM |
506 | { |
507 | /* Virtual functions tables are full of pointers | |
0df8b418 | 508 | to virtual functions. */ |
373a8247 PM |
509 | return pascal_object_is_vtbl_ptr_type (type); |
510 | } | |
511 | } | |
512 | } | |
513 | return 0; | |
514 | } | |
515 | ||
a2bd3dcd AC |
516 | /* Mutually recursive subroutines of pascal_object_print_value and |
517 | c_val_print to print out a structure's fields: | |
518 | pascal_object_print_value_fields and pascal_object_print_value. | |
373a8247 | 519 | |
79a45b7d | 520 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and OPTIONS have the |
373a8247 PM |
521 | same meanings as in pascal_object_print_value and c_val_print. |
522 | ||
523 | DONT_PRINT is an array of baseclass types that we | |
524 | should not print, or zero if called from top level. */ | |
525 | ||
526 | void | |
fc1a4b47 | 527 | pascal_object_print_value_fields (struct type *type, const gdb_byte *valaddr, |
490f124f | 528 | int offset, |
fba45db2 | 529 | CORE_ADDR address, struct ui_file *stream, |
79a45b7d | 530 | int recurse, |
0e03807e | 531 | const struct value *val, |
79a45b7d | 532 | const struct value_print_options *options, |
fba45db2 KB |
533 | struct type **dont_print_vb, |
534 | int dont_print_statmem) | |
373a8247 PM |
535 | { |
536 | int i, len, n_baseclasses; | |
373a8247 PM |
537 | char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack); |
538 | ||
539 | CHECK_TYPEDEF (type); | |
540 | ||
541 | fprintf_filtered (stream, "{"); | |
542 | len = TYPE_NFIELDS (type); | |
543 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
544 | ||
545 | /* Print out baseclasses such that we don't print | |
546 | duplicates of virtual baseclasses. */ | |
547 | if (n_baseclasses > 0) | |
490f124f PA |
548 | pascal_object_print_value (type, valaddr, offset, address, |
549 | stream, recurse + 1, val, | |
550 | options, dont_print_vb); | |
373a8247 PM |
551 | |
552 | if (!len && n_baseclasses == 1) | |
553 | fprintf_filtered (stream, "<No data fields>"); | |
554 | else | |
555 | { | |
c1b6e682 | 556 | struct obstack tmp_obstack = dont_print_statmem_obstack; |
373a8247 PM |
557 | int fields_seen = 0; |
558 | ||
559 | if (dont_print_statmem == 0) | |
560 | { | |
561 | /* If we're at top level, carve out a completely fresh | |
562 | chunk of the obstack and use that until this particular | |
563 | invocation returns. */ | |
373a8247 PM |
564 | obstack_finish (&dont_print_statmem_obstack); |
565 | } | |
566 | ||
567 | for (i = n_baseclasses; i < len; i++) | |
568 | { | |
569 | /* If requested, skip printing of static fields. */ | |
79a45b7d | 570 | if (!options->pascal_static_field_print |
d6a843b5 | 571 | && field_is_static (&TYPE_FIELD (type, i))) |
373a8247 PM |
572 | continue; |
573 | if (fields_seen) | |
574 | fprintf_filtered (stream, ", "); | |
575 | else if (n_baseclasses > 0) | |
576 | { | |
79a45b7d | 577 | if (options->pretty) |
373a8247 PM |
578 | { |
579 | fprintf_filtered (stream, "\n"); | |
580 | print_spaces_filtered (2 + 2 * recurse, stream); | |
581 | fputs_filtered ("members of ", stream); | |
582 | fputs_filtered (type_name_no_tag (type), stream); | |
583 | fputs_filtered (": ", stream); | |
584 | } | |
585 | } | |
586 | fields_seen = 1; | |
587 | ||
79a45b7d | 588 | if (options->pretty) |
373a8247 PM |
589 | { |
590 | fprintf_filtered (stream, "\n"); | |
591 | print_spaces_filtered (2 + 2 * recurse, stream); | |
592 | } | |
593 | else | |
594 | { | |
595 | wrap_here (n_spaces (2 + 2 * recurse)); | |
596 | } | |
e93a8774 TT |
597 | |
598 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
599 | ||
600 | if (field_is_static (&TYPE_FIELD (type, i))) | |
601 | fputs_filtered ("static ", stream); | |
602 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
603 | language_cplus, | |
604 | DMGL_PARAMS | DMGL_ANSI); | |
605 | annotate_field_name_end (); | |
606 | fputs_filtered (" = ", stream); | |
607 | annotate_field_value (); | |
373a8247 | 608 | |
d6a843b5 JK |
609 | if (!field_is_static (&TYPE_FIELD (type, i)) |
610 | && TYPE_FIELD_PACKED (type, i)) | |
373a8247 | 611 | { |
6943961c | 612 | struct value *v; |
373a8247 PM |
613 | |
614 | /* Bitfields require special handling, especially due to byte | |
615 | order problems. */ | |
616 | if (TYPE_FIELD_IGNORE (type, i)) | |
617 | { | |
618 | fputs_filtered ("<optimized out or zero length>", stream); | |
619 | } | |
8cf6f0b1 TT |
620 | else if (value_bits_synthetic_pointer (val, |
621 | TYPE_FIELD_BITPOS (type, | |
622 | i), | |
623 | TYPE_FIELD_BITSIZE (type, | |
624 | i))) | |
625 | { | |
626 | fputs_filtered (_("<synthetic pointer>"), stream); | |
627 | } | |
0e03807e TT |
628 | else if (!value_bits_valid (val, TYPE_FIELD_BITPOS (type, i), |
629 | TYPE_FIELD_BITSIZE (type, i))) | |
630 | { | |
585fdaa1 | 631 | val_print_optimized_out (stream); |
0e03807e | 632 | } |
373a8247 PM |
633 | else |
634 | { | |
79a45b7d | 635 | struct value_print_options opts = *options; |
ad3bbd48 | 636 | |
5467c6c8 | 637 | v = value_field_bitfield (type, i, valaddr, offset, val); |
373a8247 | 638 | |
79a45b7d TT |
639 | opts.deref_ref = 0; |
640 | common_val_print (v, stream, recurse + 1, &opts, | |
641 | current_language); | |
373a8247 PM |
642 | } |
643 | } | |
644 | else | |
645 | { | |
646 | if (TYPE_FIELD_IGNORE (type, i)) | |
647 | { | |
648 | fputs_filtered ("<optimized out or zero length>", stream); | |
649 | } | |
d6a843b5 | 650 | else if (field_is_static (&TYPE_FIELD (type, i))) |
373a8247 | 651 | { |
3e43a32a | 652 | /* struct value *v = value_static_field (type, i); |
0df8b418 | 653 | v4.17 specific. */ |
6943961c | 654 | struct value *v; |
ad3bbd48 | 655 | |
5467c6c8 | 656 | v = value_field_bitfield (type, i, valaddr, offset, val); |
373a8247 PM |
657 | |
658 | if (v == NULL) | |
585fdaa1 | 659 | val_print_optimized_out (stream); |
373a8247 | 660 | else |
79a45b7d TT |
661 | pascal_object_print_static_field (v, stream, recurse + 1, |
662 | options); | |
373a8247 PM |
663 | } |
664 | else | |
665 | { | |
79a45b7d | 666 | struct value_print_options opts = *options; |
ad3bbd48 | 667 | |
79a45b7d | 668 | opts.deref_ref = 0; |
373a8247 PM |
669 | /* val_print (TYPE_FIELD_TYPE (type, i), |
670 | valaddr + TYPE_FIELD_BITPOS (type, i) / 8, | |
671 | address + TYPE_FIELD_BITPOS (type, i) / 8, 0, | |
672 | stream, format, 0, recurse + 1, pretty); */ | |
673 | val_print (TYPE_FIELD_TYPE (type, i), | |
490f124f PA |
674 | valaddr, offset + TYPE_FIELD_BITPOS (type, i) / 8, |
675 | address, stream, recurse + 1, val, &opts, | |
d8ca156b | 676 | current_language); |
373a8247 PM |
677 | } |
678 | } | |
679 | annotate_field_end (); | |
680 | } | |
681 | ||
682 | if (dont_print_statmem == 0) | |
683 | { | |
684 | /* Free the space used to deal with the printing | |
685 | of the members from top level. */ | |
686 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
687 | dont_print_statmem_obstack = tmp_obstack; | |
688 | } | |
689 | ||
79a45b7d | 690 | if (options->pretty) |
373a8247 PM |
691 | { |
692 | fprintf_filtered (stream, "\n"); | |
693 | print_spaces_filtered (2 * recurse, stream); | |
694 | } | |
695 | } | |
696 | fprintf_filtered (stream, "}"); | |
697 | } | |
698 | ||
699 | /* Special val_print routine to avoid printing multiple copies of virtual | |
700 | baseclasses. */ | |
701 | ||
7080f20f | 702 | static void |
fc1a4b47 | 703 | pascal_object_print_value (struct type *type, const gdb_byte *valaddr, |
490f124f | 704 | int offset, |
a2bd3dcd | 705 | CORE_ADDR address, struct ui_file *stream, |
79a45b7d | 706 | int recurse, |
0e03807e | 707 | const struct value *val, |
79a45b7d | 708 | const struct value_print_options *options, |
fba45db2 | 709 | struct type **dont_print_vb) |
373a8247 | 710 | { |
373a8247 | 711 | struct type **last_dont_print |
ad3bbd48 | 712 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); |
c1b6e682 | 713 | struct obstack tmp_obstack = dont_print_vb_obstack; |
373a8247 PM |
714 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); |
715 | ||
716 | if (dont_print_vb == 0) | |
717 | { | |
718 | /* If we're at top level, carve out a completely fresh | |
719 | chunk of the obstack and use that until this particular | |
720 | invocation returns. */ | |
373a8247 PM |
721 | /* Bump up the high-water mark. Now alpha is omega. */ |
722 | obstack_finish (&dont_print_vb_obstack); | |
723 | } | |
724 | ||
725 | for (i = 0; i < n_baseclasses; i++) | |
726 | { | |
8af8e3bc | 727 | int boffset = 0; |
373a8247 | 728 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); |
0d5cff50 | 729 | const char *basename = type_name_no_tag (baseclass); |
8af8e3bc | 730 | const gdb_byte *base_valaddr = NULL; |
490f124f | 731 | int thisoffset; |
8af8e3bc PA |
732 | volatile struct gdb_exception ex; |
733 | int skip = 0; | |
373a8247 PM |
734 | |
735 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
736 | { | |
737 | struct type **first_dont_print | |
ad3bbd48 | 738 | = (struct type **) obstack_base (&dont_print_vb_obstack); |
373a8247 PM |
739 | |
740 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) | |
ad3bbd48 | 741 | - first_dont_print; |
373a8247 PM |
742 | |
743 | while (--j >= 0) | |
744 | if (baseclass == first_dont_print[j]) | |
745 | goto flush_it; | |
746 | ||
747 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
748 | } | |
749 | ||
490f124f PA |
750 | thisoffset = offset; |
751 | ||
8af8e3bc PA |
752 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
753 | { | |
754 | boffset = baseclass_offset (type, i, valaddr, offset, address, val); | |
755 | } | |
756 | if (ex.reason < 0 && ex.error == NOT_AVAILABLE_ERROR) | |
757 | skip = -1; | |
758 | else if (ex.reason < 0) | |
759 | skip = 1; | |
760 | else | |
761 | { | |
762 | skip = 0; | |
763 | ||
764 | /* The virtual base class pointer might have been clobbered by the | |
765 | user program. Make sure that it still points to a valid memory | |
766 | location. */ | |
767 | ||
768 | if (boffset < 0 || boffset >= TYPE_LENGTH (type)) | |
769 | { | |
6c18f3e0 SP |
770 | gdb_byte *buf; |
771 | struct cleanup *back_to; | |
772 | ||
773 | buf = xmalloc (TYPE_LENGTH (baseclass)); | |
774 | back_to = make_cleanup (xfree, buf); | |
8af8e3bc PA |
775 | |
776 | base_valaddr = buf; | |
777 | if (target_read_memory (address + boffset, buf, | |
778 | TYPE_LENGTH (baseclass)) != 0) | |
779 | skip = 1; | |
780 | address = address + boffset; | |
781 | thisoffset = 0; | |
782 | boffset = 0; | |
6c18f3e0 | 783 | do_cleanups (back_to); |
8af8e3bc PA |
784 | } |
785 | else | |
786 | base_valaddr = valaddr; | |
787 | } | |
373a8247 | 788 | |
79a45b7d | 789 | if (options->pretty) |
373a8247 PM |
790 | { |
791 | fprintf_filtered (stream, "\n"); | |
792 | print_spaces_filtered (2 * recurse, stream); | |
793 | } | |
794 | fputs_filtered ("<", stream); | |
795 | /* Not sure what the best notation is in the case where there is no | |
796 | baseclass name. */ | |
797 | ||
798 | fputs_filtered (basename ? basename : "", stream); | |
799 | fputs_filtered ("> = ", stream); | |
800 | ||
8af8e3bc PA |
801 | if (skip < 0) |
802 | val_print_unavailable (stream); | |
803 | else if (skip > 0) | |
804 | val_print_invalid_address (stream); | |
373a8247 | 805 | else |
3e43a32a | 806 | pascal_object_print_value_fields (baseclass, base_valaddr, |
490f124f PA |
807 | thisoffset + boffset, address, |
808 | stream, recurse, val, options, | |
373a8247 PM |
809 | (struct type **) obstack_base (&dont_print_vb_obstack), |
810 | 0); | |
811 | fputs_filtered (", ", stream); | |
812 | ||
813 | flush_it: | |
814 | ; | |
815 | } | |
816 | ||
817 | if (dont_print_vb == 0) | |
818 | { | |
819 | /* Free the space used to deal with the printing | |
820 | of this type from top level. */ | |
821 | obstack_free (&dont_print_vb_obstack, last_dont_print); | |
822 | /* Reset watermark so that we can continue protecting | |
823 | ourselves from whatever we were protecting ourselves. */ | |
824 | dont_print_vb_obstack = tmp_obstack; | |
825 | } | |
826 | } | |
827 | ||
828 | /* Print value of a static member. | |
829 | To avoid infinite recursion when printing a class that contains | |
830 | a static instance of the class, we keep the addresses of all printed | |
831 | static member classes in an obstack and refuse to print them more | |
832 | than once. | |
833 | ||
79a45b7d | 834 | VAL contains the value to print, STREAM, RECURSE, and OPTIONS |
373a8247 PM |
835 | have the same meanings as in c_val_print. */ |
836 | ||
837 | static void | |
806048c6 | 838 | pascal_object_print_static_field (struct value *val, |
79a45b7d TT |
839 | struct ui_file *stream, |
840 | int recurse, | |
841 | const struct value_print_options *options) | |
373a8247 | 842 | { |
806048c6 | 843 | struct type *type = value_type (val); |
79a45b7d | 844 | struct value_print_options opts; |
806048c6 | 845 | |
373a8247 PM |
846 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
847 | { | |
42ae5230 | 848 | CORE_ADDR *first_dont_print, addr; |
373a8247 PM |
849 | int i; |
850 | ||
851 | first_dont_print | |
852 | = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); | |
853 | i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) | |
854 | - first_dont_print; | |
855 | ||
856 | while (--i >= 0) | |
857 | { | |
42ae5230 | 858 | if (value_address (val) == first_dont_print[i]) |
373a8247 | 859 | { |
3e43a32a MS |
860 | fputs_filtered ("\ |
861 | <same as static member of an already seen type>", | |
373a8247 PM |
862 | stream); |
863 | return; | |
864 | } | |
865 | } | |
866 | ||
42ae5230 TT |
867 | addr = value_address (val); |
868 | obstack_grow (&dont_print_statmem_obstack, (char *) &addr, | |
373a8247 PM |
869 | sizeof (CORE_ADDR)); |
870 | ||
871 | CHECK_TYPEDEF (type); | |
490f124f PA |
872 | pascal_object_print_value_fields (type, |
873 | value_contents_for_printing (val), | |
874 | value_embedded_offset (val), | |
875 | addr, | |
876 | stream, recurse, | |
877 | val, options, NULL, 1); | |
373a8247 PM |
878 | return; |
879 | } | |
79a45b7d TT |
880 | |
881 | opts = *options; | |
882 | opts.deref_ref = 0; | |
883 | common_val_print (val, stream, recurse, &opts, current_language); | |
373a8247 PM |
884 | } |
885 | ||
3e43a32a MS |
886 | /* -Wmissing-prototypes */ |
887 | extern initialize_file_ftype _initialize_pascal_valprint; | |
373a8247 PM |
888 | |
889 | void | |
fba45db2 | 890 | _initialize_pascal_valprint (void) |
373a8247 | 891 | { |
5bf193a2 | 892 | add_setshow_boolean_cmd ("pascal_static-members", class_support, |
79a45b7d | 893 | &user_print_options.pascal_static_field_print, _("\ |
5bf193a2 AC |
894 | Set printing of pascal static members."), _("\ |
895 | Show printing of pascal static members."), NULL, | |
896 | NULL, | |
920d2a44 | 897 | show_pascal_static_field_print, |
5bf193a2 | 898 | &setprintlist, &showprintlist); |
373a8247 | 899 | } |