Commit | Line | Data |
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373a8247 | 1 | /* Support for printing Pascal values for GDB, the GNU debugger. |
5bcca90b | 2 | |
618f726f | 3 | Copyright (C) 2000-2016 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" |
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", | |
00272ec4 TT |
52 | "void", |
53 | "{", | |
54 | "}" | |
e88acd96 TT |
55 | }; |
56 | ||
32b72a42 | 57 | /* See val_print for a description of the various parameters of this |
d3eab38a | 58 | function; they are identical. */ |
373a8247 | 59 | |
d3eab38a | 60 | void |
fc1a4b47 | 61 | pascal_val_print (struct type *type, const gdb_byte *valaddr, |
a2bd3dcd | 62 | int embedded_offset, CORE_ADDR address, |
79a45b7d | 63 | struct ui_file *stream, int recurse, |
0e03807e | 64 | const struct value *original_value, |
79a45b7d | 65 | const struct value_print_options *options) |
373a8247 | 66 | { |
5af949e3 | 67 | struct gdbarch *gdbarch = get_type_arch (type); |
e17a4113 | 68 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
52f0bd74 | 69 | unsigned int i = 0; /* Number of characters printed */ |
373a8247 | 70 | unsigned len; |
df178451 | 71 | LONGEST low_bound, high_bound; |
373a8247 PM |
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; |
373a8247 | 78 | |
f168693b | 79 | type = check_typedef (type); |
373a8247 PM |
80 | switch (TYPE_CODE (type)) |
81 | { | |
82 | case TYPE_CODE_ARRAY: | |
6ced1581 | 83 | if (get_array_bounds (type, &low_bound, &high_bound)) |
373a8247 | 84 | { |
8148cf8d | 85 | len = high_bound - low_bound + 1; |
373a8247 PM |
86 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); |
87 | eltlen = TYPE_LENGTH (elttype); | |
2a998fc0 | 88 | if (options->prettyformat_arrays) |
373a8247 PM |
89 | { |
90 | print_spaces_filtered (2 + 2 * recurse, stream); | |
91 | } | |
6e354e5e PM |
92 | /* If 's' format is used, try to print out as string. |
93 | If no format is given, print as string if element type | |
94 | is of TYPE_CODE_CHAR and element size is 1,2 or 4. */ | |
95 | if (options->format == 's' | |
96 | || ((eltlen == 1 || eltlen == 2 || eltlen == 4) | |
97 | && TYPE_CODE (elttype) == TYPE_CODE_CHAR | |
98 | && options->format == 0)) | |
373a8247 PM |
99 | { |
100 | /* If requested, look for the first null char and only print | |
101 | elements up to it. */ | |
79a45b7d | 102 | if (options->stop_print_at_null) |
373a8247 PM |
103 | { |
104 | unsigned int temp_len; | |
105 | ||
0df8b418 | 106 | /* Look for a NULL char. */ |
373a8247 | 107 | for (temp_len = 0; |
58159490 | 108 | extract_unsigned_integer (valaddr + embedded_offset + |
e17a4113 UW |
109 | temp_len * eltlen, eltlen, |
110 | byte_order) | |
79a45b7d | 111 | && temp_len < len && temp_len < options->print_max; |
373a8247 PM |
112 | temp_len++); |
113 | len = temp_len; | |
114 | } | |
115 | ||
6c7a06a3 | 116 | LA_PRINT_STRING (stream, TYPE_TARGET_TYPE (type), |
be759fcf | 117 | valaddr + embedded_offset, len, NULL, 0, |
6c7a06a3 | 118 | options); |
373a8247 PM |
119 | i = len; |
120 | } | |
121 | else | |
122 | { | |
123 | fprintf_filtered (stream, "{"); | |
124 | /* If this is a virtual function table, print the 0th | |
125 | entry specially, and the rest of the members normally. */ | |
126 | if (pascal_object_is_vtbl_ptr_type (elttype)) | |
127 | { | |
128 | i = 1; | |
129 | fprintf_filtered (stream, "%d vtable entries", len - 1); | |
130 | } | |
131 | else | |
132 | { | |
133 | i = 0; | |
134 | } | |
490f124f | 135 | val_print_array_elements (type, valaddr, embedded_offset, |
3e43a32a MS |
136 | address, stream, recurse, |
137 | original_value, options, i); | |
373a8247 PM |
138 | fprintf_filtered (stream, "}"); |
139 | } | |
140 | break; | |
141 | } | |
142 | /* Array of unspecified length: treat like pointer to first elt. */ | |
13163d80 | 143 | addr = address + embedded_offset; |
373a8247 PM |
144 | goto print_unpacked_pointer; |
145 | ||
146 | case TYPE_CODE_PTR: | |
79a45b7d | 147 | if (options->format && options->format != 's') |
373a8247 | 148 | { |
ab2188aa PA |
149 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
150 | original_value, options, 0, stream); | |
373a8247 PM |
151 | break; |
152 | } | |
79a45b7d | 153 | if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type)) |
373a8247 PM |
154 | { |
155 | /* Print the unmangled name if desired. */ | |
156 | /* Print vtable entry - we only get here if we ARE using | |
0df8b418 | 157 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */ |
b276f1bb | 158 | /* Extract the address, assume that it is unsigned. */ |
e17a4113 UW |
159 | addr = extract_unsigned_integer (valaddr + embedded_offset, |
160 | TYPE_LENGTH (type), byte_order); | |
edf0c1b7 | 161 | print_address_demangle (options, gdbarch, addr, stream, demangle); |
373a8247 PM |
162 | break; |
163 | } | |
91e8df85 | 164 | check_typedef (TYPE_TARGET_TYPE (type)); |
e13eedd5 PM |
165 | |
166 | addr = unpack_pointer (type, valaddr + embedded_offset); | |
167 | print_unpacked_pointer: | |
168 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
169 | ||
170 | if (TYPE_CODE (elttype) == TYPE_CODE_FUNC) | |
373a8247 | 171 | { |
e13eedd5 | 172 | /* Try to print what function it points to. */ |
edf0c1b7 | 173 | print_address_demangle (options, gdbarch, addr, stream, demangle); |
d3eab38a | 174 | return; |
e13eedd5 | 175 | } |
373a8247 | 176 | |
e13eedd5 PM |
177 | if (options->addressprint && options->format != 's') |
178 | { | |
179 | fputs_filtered (paddress (gdbarch, addr), stream); | |
b012acdd | 180 | want_space = 1; |
e13eedd5 | 181 | } |
373a8247 | 182 | |
e13eedd5 PM |
183 | /* For a pointer to char or unsigned char, also print the string |
184 | pointed to, unless pointer is null. */ | |
185 | if (((TYPE_LENGTH (elttype) == 1 | |
186 | && (TYPE_CODE (elttype) == TYPE_CODE_INT | |
187 | || TYPE_CODE (elttype) == TYPE_CODE_CHAR)) | |
188 | || ((TYPE_LENGTH (elttype) == 2 || TYPE_LENGTH (elttype) == 4) | |
189 | && TYPE_CODE (elttype) == TYPE_CODE_CHAR)) | |
190 | && (options->format == 0 || options->format == 's') | |
191 | && addr != 0) | |
192 | { | |
b012acdd TT |
193 | if (want_space) |
194 | fputs_filtered (" ", stream); | |
0df8b418 | 195 | /* No wide string yet. */ |
09ca9e2e | 196 | i = val_print_string (elttype, NULL, addr, -1, stream, options); |
e13eedd5 | 197 | } |
0df8b418 | 198 | /* Also for pointers to pascal strings. */ |
e13eedd5 PM |
199 | /* Note: this is Free Pascal specific: |
200 | as GDB does not recognize stabs pascal strings | |
201 | Pascal strings are mapped to records | |
0df8b418 | 202 | with lowercase names PM. */ |
e13eedd5 PM |
203 | if (is_pascal_string_type (elttype, &length_pos, &length_size, |
204 | &string_pos, &char_type, NULL) | |
205 | && addr != 0) | |
206 | { | |
207 | ULONGEST string_length; | |
7c543f7b | 208 | gdb_byte *buffer; |
ad3bbd48 | 209 | |
b012acdd TT |
210 | if (want_space) |
211 | fputs_filtered (" ", stream); | |
7c543f7b | 212 | buffer = (gdb_byte *) xmalloc (length_size); |
e13eedd5 PM |
213 | read_memory (addr + length_pos, buffer, length_size); |
214 | string_length = extract_unsigned_integer (buffer, length_size, | |
215 | byte_order); | |
216 | xfree (buffer); | |
09ca9e2e TT |
217 | i = val_print_string (char_type, NULL, |
218 | addr + string_pos, string_length, | |
219 | stream, options); | |
e13eedd5 PM |
220 | } |
221 | else if (pascal_object_is_vtbl_member (type)) | |
222 | { | |
0df8b418 | 223 | /* Print vtbl's nicely. */ |
3e43a32a MS |
224 | CORE_ADDR vt_address = unpack_pointer (type, |
225 | valaddr + embedded_offset); | |
7cbd4a93 | 226 | struct bound_minimal_symbol msymbol = |
ad3bbd48 MS |
227 | lookup_minimal_symbol_by_pc (vt_address); |
228 | ||
9cb709b6 TT |
229 | /* If 'symbol_print' is set, we did the work above. */ |
230 | if (!options->symbol_print | |
7cbd4a93 | 231 | && (msymbol.minsym != NULL) |
77e371c0 | 232 | && (vt_address == BMSYMBOL_VALUE_ADDRESS (msymbol))) |
373a8247 | 233 | { |
b012acdd TT |
234 | if (want_space) |
235 | fputs_filtered (" ", stream); | |
236 | fputs_filtered ("<", stream); | |
efd66ac6 | 237 | fputs_filtered (MSYMBOL_PRINT_NAME (msymbol.minsym), stream); |
e13eedd5 | 238 | fputs_filtered (">", stream); |
b012acdd | 239 | want_space = 1; |
373a8247 | 240 | } |
e13eedd5 | 241 | if (vt_address && options->vtblprint) |
373a8247 | 242 | { |
e13eedd5 | 243 | struct value *vt_val; |
be903358 | 244 | struct symbol *wsym = NULL; |
e13eedd5 | 245 | struct type *wtype; |
be903358 | 246 | struct block *block = NULL; |
1993b719 | 247 | struct field_of_this_result is_this_fld; |
373a8247 | 248 | |
b012acdd TT |
249 | if (want_space) |
250 | fputs_filtered (" ", stream); | |
251 | ||
7cbd4a93 | 252 | if (msymbol.minsym != NULL) |
efd66ac6 | 253 | wsym = lookup_symbol (MSYMBOL_LINKAGE_NAME (msymbol.minsym), |
7cbd4a93 | 254 | block, |
d12307c1 | 255 | VAR_DOMAIN, &is_this_fld).symbol; |
e13eedd5 PM |
256 | |
257 | if (wsym) | |
373a8247 | 258 | { |
e13eedd5 | 259 | wtype = SYMBOL_TYPE (wsym); |
373a8247 | 260 | } |
e13eedd5 | 261 | else |
373a8247 | 262 | { |
e13eedd5 PM |
263 | wtype = TYPE_TARGET_TYPE (type); |
264 | } | |
265 | vt_val = value_at (wtype, vt_address); | |
266 | common_val_print (vt_val, stream, recurse + 1, options, | |
267 | current_language); | |
2a998fc0 | 268 | if (options->prettyformat) |
e13eedd5 PM |
269 | { |
270 | fprintf_filtered (stream, "\n"); | |
271 | print_spaces_filtered (2 + 2 * recurse, stream); | |
373a8247 PM |
272 | } |
273 | } | |
373a8247 | 274 | } |
e13eedd5 | 275 | |
d3eab38a | 276 | return; |
373a8247 | 277 | |
373a8247 | 278 | case TYPE_CODE_REF: |
e88acd96 TT |
279 | case TYPE_CODE_ENUM: |
280 | case TYPE_CODE_FLAGS: | |
281 | case TYPE_CODE_FUNC: | |
282 | case TYPE_CODE_RANGE: | |
283 | case TYPE_CODE_INT: | |
284 | case TYPE_CODE_FLT: | |
285 | case TYPE_CODE_VOID: | |
286 | case TYPE_CODE_ERROR: | |
287 | case TYPE_CODE_UNDEF: | |
288 | case TYPE_CODE_BOOL: | |
289 | case TYPE_CODE_CHAR: | |
290 | generic_val_print (type, valaddr, embedded_offset, address, | |
291 | stream, recurse, original_value, options, | |
292 | &p_decorations); | |
373a8247 PM |
293 | break; |
294 | ||
295 | case TYPE_CODE_UNION: | |
79a45b7d | 296 | if (recurse && !options->unionprint) |
373a8247 PM |
297 | { |
298 | fprintf_filtered (stream, "{...}"); | |
299 | break; | |
300 | } | |
301 | /* Fall through. */ | |
302 | case TYPE_CODE_STRUCT: | |
79a45b7d | 303 | if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type)) |
373a8247 PM |
304 | { |
305 | /* Print the unmangled name if desired. */ | |
306 | /* Print vtable entry - we only get here if NOT using | |
0df8b418 | 307 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */ |
b276f1bb AC |
308 | /* Extract the address, assume that it is unsigned. */ |
309 | print_address_demangle | |
edf0c1b7 | 310 | (options, gdbarch, |
3e43a32a MS |
311 | extract_unsigned_integer (valaddr + embedded_offset |
312 | + TYPE_FIELD_BITPOS (type, | |
313 | VTBL_FNADDR_OFFSET) / 8, | |
314 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, | |
315 | VTBL_FNADDR_OFFSET)), | |
316 | byte_order), | |
b276f1bb | 317 | stream, demangle); |
373a8247 PM |
318 | } |
319 | else | |
320 | { | |
5598ce11 | 321 | if (is_pascal_string_type (type, &length_pos, &length_size, |
6c7a06a3 | 322 | &string_pos, &char_type, NULL)) |
373a8247 | 323 | { |
3e43a32a MS |
324 | len = extract_unsigned_integer (valaddr + embedded_offset |
325 | + length_pos, length_size, | |
326 | byte_order); | |
6ced1581 | 327 | LA_PRINT_STRING (stream, char_type, |
be759fcf PM |
328 | valaddr + embedded_offset + string_pos, |
329 | len, NULL, 0, options); | |
373a8247 PM |
330 | } |
331 | else | |
490f124f | 332 | pascal_object_print_value_fields (type, valaddr, embedded_offset, |
3e43a32a MS |
333 | address, stream, recurse, |
334 | original_value, options, | |
335 | NULL, 0); | |
373a8247 PM |
336 | } |
337 | break; | |
338 | ||
373a8247 PM |
339 | case TYPE_CODE_SET: |
340 | elttype = TYPE_INDEX_TYPE (type); | |
f168693b | 341 | elttype = check_typedef (elttype); |
74a9bb82 | 342 | if (TYPE_STUB (elttype)) |
373a8247 PM |
343 | { |
344 | fprintf_filtered (stream, "<incomplete type>"); | |
345 | gdb_flush (stream); | |
346 | break; | |
347 | } | |
348 | else | |
349 | { | |
350 | struct type *range = elttype; | |
351 | LONGEST low_bound, high_bound; | |
352 | int i; | |
373a8247 PM |
353 | int need_comma = 0; |
354 | ||
6b1755ce | 355 | fputs_filtered ("[", stream); |
373a8247 PM |
356 | |
357 | i = get_discrete_bounds (range, &low_bound, &high_bound); | |
7a081a30 PM |
358 | if (low_bound == 0 && high_bound == -1 && TYPE_LENGTH (type) > 0) |
359 | { | |
360 | /* If we know the size of the set type, we can figure out the | |
361 | maximum value. */ | |
362 | i = 0; | |
363 | high_bound = TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1; | |
364 | TYPE_HIGH_BOUND (range) = high_bound; | |
365 | } | |
373a8247 PM |
366 | maybe_bad_bstring: |
367 | if (i < 0) | |
368 | { | |
369 | fputs_filtered ("<error value>", stream); | |
370 | goto done; | |
371 | } | |
372 | ||
373 | for (i = low_bound; i <= high_bound; i++) | |
374 | { | |
3e43a32a MS |
375 | int element = value_bit_index (type, |
376 | valaddr + embedded_offset, i); | |
ad3bbd48 | 377 | |
373a8247 PM |
378 | if (element < 0) |
379 | { | |
380 | i = element; | |
381 | goto maybe_bad_bstring; | |
382 | } | |
6b1755ce | 383 | if (element) |
373a8247 PM |
384 | { |
385 | if (need_comma) | |
386 | fputs_filtered (", ", stream); | |
387 | print_type_scalar (range, i, stream); | |
388 | need_comma = 1; | |
389 | ||
3e43a32a MS |
390 | if (i + 1 <= high_bound |
391 | && value_bit_index (type, | |
392 | valaddr + embedded_offset, ++i)) | |
373a8247 PM |
393 | { |
394 | int j = i; | |
ad3bbd48 | 395 | |
373a8247 PM |
396 | fputs_filtered ("..", stream); |
397 | while (i + 1 <= high_bound | |
3e43a32a MS |
398 | && value_bit_index (type, |
399 | valaddr + embedded_offset, | |
400 | ++i)) | |
373a8247 PM |
401 | j = i; |
402 | print_type_scalar (range, j, stream); | |
403 | } | |
404 | } | |
405 | } | |
406 | done: | |
6b1755ce | 407 | fputs_filtered ("]", stream); |
373a8247 PM |
408 | } |
409 | break; | |
410 | ||
373a8247 | 411 | default: |
3e43a32a MS |
412 | error (_("Invalid pascal type code %d in symbol table."), |
413 | TYPE_CODE (type)); | |
373a8247 PM |
414 | } |
415 | gdb_flush (stream); | |
373a8247 PM |
416 | } |
417 | \f | |
8e069a98 | 418 | void |
79a45b7d TT |
419 | pascal_value_print (struct value *val, struct ui_file *stream, |
420 | const struct value_print_options *options) | |
373a8247 | 421 | { |
df407dfe | 422 | struct type *type = value_type (val); |
278582cb PM |
423 | struct value_print_options opts = *options; |
424 | ||
425 | opts.deref_ref = 1; | |
373a8247 PM |
426 | |
427 | /* If it is a pointer, indicate what it points to. | |
428 | ||
429 | Print type also if it is a reference. | |
430 | ||
431 | Object pascal: if it is a member pointer, we will take care | |
432 | of that when we print it. */ | |
b20a3440 PM |
433 | if (TYPE_CODE (type) == TYPE_CODE_PTR |
434 | || TYPE_CODE (type) == TYPE_CODE_REF) | |
373a8247 PM |
435 | { |
436 | /* Hack: remove (char *) for char strings. Their | |
0df8b418 | 437 | type is indicated by the quoted string anyway. */ |
6ced1581 | 438 | if (TYPE_CODE (type) == TYPE_CODE_PTR |
b20a3440 PM |
439 | && TYPE_NAME (type) == NULL |
440 | && TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL | |
6314a349 | 441 | && strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0) |
373a8247 | 442 | { |
0df8b418 | 443 | /* Print nothing. */ |
373a8247 PM |
444 | } |
445 | else | |
446 | { | |
447 | fprintf_filtered (stream, "("); | |
448 | type_print (type, "", stream, -1); | |
449 | fprintf_filtered (stream, ") "); | |
450 | } | |
451 | } | |
8e069a98 | 452 | common_val_print (val, stream, 0, &opts, current_language); |
373a8247 PM |
453 | } |
454 | ||
455 | ||
920d2a44 AC |
456 | static void |
457 | show_pascal_static_field_print (struct ui_file *file, int from_tty, | |
458 | struct cmd_list_element *c, const char *value) | |
459 | { | |
460 | fprintf_filtered (file, _("Printing of pascal static members is %s.\n"), | |
461 | value); | |
462 | } | |
373a8247 PM |
463 | |
464 | static struct obstack dont_print_vb_obstack; | |
465 | static struct obstack dont_print_statmem_obstack; | |
466 | ||
806048c6 | 467 | static void pascal_object_print_static_field (struct value *, |
79a45b7d TT |
468 | struct ui_file *, int, |
469 | const struct value_print_options *); | |
373a8247 | 470 | |
fc1a4b47 | 471 | static void pascal_object_print_value (struct type *, const gdb_byte *, |
6b850546 | 472 | LONGEST, |
79a45b7d | 473 | CORE_ADDR, struct ui_file *, int, |
0e03807e | 474 | const struct value *, |
79a45b7d | 475 | const struct value_print_options *, |
a2bd3dcd | 476 | struct type **); |
373a8247 | 477 | |
373a8247 PM |
478 | /* It was changed to this after 2.4.5. */ |
479 | const char pascal_vtbl_ptr_name[] = | |
480 | {'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; | |
481 | ||
482 | /* Return truth value for assertion that TYPE is of the type | |
483 | "pointer to virtual function". */ | |
484 | ||
485 | int | |
fba45db2 | 486 | pascal_object_is_vtbl_ptr_type (struct type *type) |
373a8247 | 487 | { |
fe978cb0 | 488 | const char *type_name = type_name_no_tag (type); |
373a8247 | 489 | |
fe978cb0 PA |
490 | return (type_name != NULL |
491 | && strcmp (type_name, pascal_vtbl_ptr_name) == 0); | |
373a8247 PM |
492 | } |
493 | ||
494 | /* Return truth value for the assertion that TYPE is of the type | |
495 | "pointer to virtual function table". */ | |
496 | ||
497 | int | |
fba45db2 | 498 | pascal_object_is_vtbl_member (struct type *type) |
373a8247 PM |
499 | { |
500 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
501 | { | |
502 | type = TYPE_TARGET_TYPE (type); | |
503 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
504 | { | |
505 | type = TYPE_TARGET_TYPE (type); | |
0df8b418 MS |
506 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* If not using |
507 | thunks. */ | |
508 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* If using thunks. */ | |
373a8247 PM |
509 | { |
510 | /* Virtual functions tables are full of pointers | |
0df8b418 | 511 | to virtual functions. */ |
373a8247 PM |
512 | return pascal_object_is_vtbl_ptr_type (type); |
513 | } | |
514 | } | |
515 | } | |
516 | return 0; | |
517 | } | |
518 | ||
a2bd3dcd AC |
519 | /* Mutually recursive subroutines of pascal_object_print_value and |
520 | c_val_print to print out a structure's fields: | |
521 | pascal_object_print_value_fields and pascal_object_print_value. | |
373a8247 | 522 | |
79a45b7d | 523 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and OPTIONS have the |
373a8247 PM |
524 | same meanings as in pascal_object_print_value and c_val_print. |
525 | ||
526 | DONT_PRINT is an array of baseclass types that we | |
527 | should not print, or zero if called from top level. */ | |
528 | ||
529 | void | |
fc1a4b47 | 530 | pascal_object_print_value_fields (struct type *type, const gdb_byte *valaddr, |
6b850546 | 531 | LONGEST offset, |
fba45db2 | 532 | CORE_ADDR address, struct ui_file *stream, |
79a45b7d | 533 | int recurse, |
0e03807e | 534 | const struct value *val, |
79a45b7d | 535 | const struct value_print_options *options, |
fba45db2 KB |
536 | struct type **dont_print_vb, |
537 | int dont_print_statmem) | |
373a8247 PM |
538 | { |
539 | int i, len, n_baseclasses; | |
79f33898 SM |
540 | char *last_dont_print |
541 | = (char *) obstack_next_free (&dont_print_statmem_obstack); | |
373a8247 | 542 | |
f168693b | 543 | type = check_typedef (type); |
373a8247 PM |
544 | |
545 | fprintf_filtered (stream, "{"); | |
546 | len = TYPE_NFIELDS (type); | |
547 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
548 | ||
549 | /* Print out baseclasses such that we don't print | |
550 | duplicates of virtual baseclasses. */ | |
551 | if (n_baseclasses > 0) | |
490f124f PA |
552 | pascal_object_print_value (type, valaddr, offset, address, |
553 | stream, recurse + 1, val, | |
554 | options, dont_print_vb); | |
373a8247 PM |
555 | |
556 | if (!len && n_baseclasses == 1) | |
557 | fprintf_filtered (stream, "<No data fields>"); | |
558 | else | |
559 | { | |
c1b6e682 | 560 | struct obstack tmp_obstack = dont_print_statmem_obstack; |
373a8247 PM |
561 | int fields_seen = 0; |
562 | ||
563 | if (dont_print_statmem == 0) | |
564 | { | |
565 | /* If we're at top level, carve out a completely fresh | |
566 | chunk of the obstack and use that until this particular | |
567 | invocation returns. */ | |
373a8247 PM |
568 | obstack_finish (&dont_print_statmem_obstack); |
569 | } | |
570 | ||
571 | for (i = n_baseclasses; i < len; i++) | |
572 | { | |
573 | /* If requested, skip printing of static fields. */ | |
79a45b7d | 574 | if (!options->pascal_static_field_print |
d6a843b5 | 575 | && field_is_static (&TYPE_FIELD (type, i))) |
373a8247 PM |
576 | continue; |
577 | if (fields_seen) | |
578 | fprintf_filtered (stream, ", "); | |
579 | else if (n_baseclasses > 0) | |
580 | { | |
2a998fc0 | 581 | if (options->prettyformat) |
373a8247 PM |
582 | { |
583 | fprintf_filtered (stream, "\n"); | |
584 | print_spaces_filtered (2 + 2 * recurse, stream); | |
585 | fputs_filtered ("members of ", stream); | |
586 | fputs_filtered (type_name_no_tag (type), stream); | |
587 | fputs_filtered (": ", stream); | |
588 | } | |
589 | } | |
590 | fields_seen = 1; | |
591 | ||
2a998fc0 | 592 | if (options->prettyformat) |
373a8247 PM |
593 | { |
594 | fprintf_filtered (stream, "\n"); | |
595 | print_spaces_filtered (2 + 2 * recurse, stream); | |
596 | } | |
597 | else | |
598 | { | |
599 | wrap_here (n_spaces (2 + 2 * recurse)); | |
600 | } | |
e93a8774 TT |
601 | |
602 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
603 | ||
604 | if (field_is_static (&TYPE_FIELD (type, i))) | |
605 | fputs_filtered ("static ", stream); | |
606 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
607 | language_cplus, | |
608 | DMGL_PARAMS | DMGL_ANSI); | |
609 | annotate_field_name_end (); | |
610 | fputs_filtered (" = ", stream); | |
611 | annotate_field_value (); | |
373a8247 | 612 | |
d6a843b5 JK |
613 | if (!field_is_static (&TYPE_FIELD (type, i)) |
614 | && TYPE_FIELD_PACKED (type, i)) | |
373a8247 | 615 | { |
6943961c | 616 | struct value *v; |
373a8247 PM |
617 | |
618 | /* Bitfields require special handling, especially due to byte | |
619 | order problems. */ | |
620 | if (TYPE_FIELD_IGNORE (type, i)) | |
621 | { | |
622 | fputs_filtered ("<optimized out or zero length>", stream); | |
623 | } | |
8cf6f0b1 TT |
624 | else if (value_bits_synthetic_pointer (val, |
625 | TYPE_FIELD_BITPOS (type, | |
626 | i), | |
627 | TYPE_FIELD_BITSIZE (type, | |
628 | i))) | |
629 | { | |
630 | fputs_filtered (_("<synthetic pointer>"), stream); | |
631 | } | |
373a8247 PM |
632 | else |
633 | { | |
79a45b7d | 634 | struct value_print_options opts = *options; |
ad3bbd48 | 635 | |
5467c6c8 | 636 | v = value_field_bitfield (type, i, valaddr, offset, val); |
373a8247 | 637 | |
79a45b7d TT |
638 | opts.deref_ref = 0; |
639 | common_val_print (v, stream, recurse + 1, &opts, | |
640 | current_language); | |
373a8247 PM |
641 | } |
642 | } | |
643 | else | |
644 | { | |
645 | if (TYPE_FIELD_IGNORE (type, i)) | |
646 | { | |
647 | fputs_filtered ("<optimized out or zero length>", stream); | |
648 | } | |
d6a843b5 | 649 | else if (field_is_static (&TYPE_FIELD (type, i))) |
373a8247 | 650 | { |
3e43a32a | 651 | /* struct value *v = value_static_field (type, i); |
0df8b418 | 652 | v4.17 specific. */ |
6943961c | 653 | struct value *v; |
ad3bbd48 | 654 | |
5467c6c8 | 655 | v = value_field_bitfield (type, i, valaddr, offset, val); |
373a8247 PM |
656 | |
657 | if (v == NULL) | |
901461f8 | 658 | val_print_optimized_out (NULL, stream); |
373a8247 | 659 | else |
79a45b7d TT |
660 | pascal_object_print_static_field (v, stream, recurse + 1, |
661 | options); | |
373a8247 PM |
662 | } |
663 | else | |
664 | { | |
79a45b7d | 665 | struct value_print_options opts = *options; |
ad3bbd48 | 666 | |
79a45b7d | 667 | opts.deref_ref = 0; |
373a8247 PM |
668 | /* val_print (TYPE_FIELD_TYPE (type, i), |
669 | valaddr + TYPE_FIELD_BITPOS (type, i) / 8, | |
670 | address + TYPE_FIELD_BITPOS (type, i) / 8, 0, | |
671 | stream, format, 0, recurse + 1, pretty); */ | |
672 | val_print (TYPE_FIELD_TYPE (type, i), | |
490f124f PA |
673 | valaddr, offset + TYPE_FIELD_BITPOS (type, i) / 8, |
674 | address, stream, recurse + 1, val, &opts, | |
d8ca156b | 675 | current_language); |
373a8247 PM |
676 | } |
677 | } | |
678 | annotate_field_end (); | |
679 | } | |
680 | ||
681 | if (dont_print_statmem == 0) | |
682 | { | |
683 | /* Free the space used to deal with the printing | |
684 | of the members from top level. */ | |
685 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
686 | dont_print_statmem_obstack = tmp_obstack; | |
687 | } | |
688 | ||
2a998fc0 | 689 | if (options->prettyformat) |
373a8247 PM |
690 | { |
691 | fprintf_filtered (stream, "\n"); | |
692 | print_spaces_filtered (2 * recurse, stream); | |
693 | } | |
694 | } | |
695 | fprintf_filtered (stream, "}"); | |
696 | } | |
697 | ||
698 | /* Special val_print routine to avoid printing multiple copies of virtual | |
699 | baseclasses. */ | |
700 | ||
7080f20f | 701 | static void |
fc1a4b47 | 702 | pascal_object_print_value (struct type *type, const gdb_byte *valaddr, |
6b850546 | 703 | LONGEST offset, |
a2bd3dcd | 704 | CORE_ADDR address, struct ui_file *stream, |
79a45b7d | 705 | int recurse, |
0e03807e | 706 | const struct value *val, |
79a45b7d | 707 | const struct value_print_options *options, |
fba45db2 | 708 | struct type **dont_print_vb) |
373a8247 | 709 | { |
373a8247 | 710 | struct type **last_dont_print |
ad3bbd48 | 711 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); |
c1b6e682 | 712 | struct obstack tmp_obstack = dont_print_vb_obstack; |
373a8247 PM |
713 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); |
714 | ||
715 | if (dont_print_vb == 0) | |
716 | { | |
717 | /* If we're at top level, carve out a completely fresh | |
718 | chunk of the obstack and use that until this particular | |
719 | invocation returns. */ | |
373a8247 PM |
720 | /* Bump up the high-water mark. Now alpha is omega. */ |
721 | obstack_finish (&dont_print_vb_obstack); | |
722 | } | |
723 | ||
724 | for (i = 0; i < n_baseclasses; i++) | |
725 | { | |
6b850546 | 726 | LONGEST boffset = 0; |
373a8247 | 727 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); |
0d5cff50 | 728 | const char *basename = type_name_no_tag (baseclass); |
8af8e3bc | 729 | const gdb_byte *base_valaddr = NULL; |
6b850546 | 730 | LONGEST thisoffset; |
8af8e3bc | 731 | int skip = 0; |
373a8247 PM |
732 | |
733 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
734 | { | |
735 | struct type **first_dont_print | |
ad3bbd48 | 736 | = (struct type **) obstack_base (&dont_print_vb_obstack); |
373a8247 PM |
737 | |
738 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) | |
ad3bbd48 | 739 | - first_dont_print; |
373a8247 PM |
740 | |
741 | while (--j >= 0) | |
742 | if (baseclass == first_dont_print[j]) | |
743 | goto flush_it; | |
744 | ||
745 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
746 | } | |
747 | ||
490f124f PA |
748 | thisoffset = offset; |
749 | ||
492d29ea | 750 | TRY |
8af8e3bc PA |
751 | { |
752 | boffset = baseclass_offset (type, i, valaddr, offset, address, val); | |
753 | } | |
492d29ea | 754 | CATCH (ex, RETURN_MASK_ERROR) |
8af8e3bc | 755 | { |
7556d4a4 PA |
756 | if (ex.error == NOT_AVAILABLE_ERROR) |
757 | skip = -1; | |
758 | else | |
759 | skip = 1; | |
760 | } | |
492d29ea | 761 | END_CATCH |
8af8e3bc | 762 | |
7556d4a4 PA |
763 | if (skip == 0) |
764 | { | |
8af8e3bc PA |
765 | /* The virtual base class pointer might have been clobbered by the |
766 | user program. Make sure that it still points to a valid memory | |
767 | location. */ | |
768 | ||
769 | if (boffset < 0 || boffset >= TYPE_LENGTH (type)) | |
770 | { | |
6c18f3e0 SP |
771 | gdb_byte *buf; |
772 | struct cleanup *back_to; | |
773 | ||
224c3ddb | 774 | buf = (gdb_byte *) xmalloc (TYPE_LENGTH (baseclass)); |
6c18f3e0 | 775 | back_to = make_cleanup (xfree, buf); |
8af8e3bc PA |
776 | |
777 | base_valaddr = buf; | |
778 | if (target_read_memory (address + boffset, buf, | |
779 | TYPE_LENGTH (baseclass)) != 0) | |
780 | skip = 1; | |
781 | address = address + boffset; | |
782 | thisoffset = 0; | |
783 | boffset = 0; | |
6c18f3e0 | 784 | do_cleanups (back_to); |
8af8e3bc PA |
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 | ||
3e43a32a MS |
893 | /* -Wmissing-prototypes */ |
894 | extern initialize_file_ftype _initialize_pascal_valprint; | |
373a8247 PM |
895 | |
896 | void | |
fba45db2 | 897 | _initialize_pascal_valprint (void) |
373a8247 | 898 | { |
5bf193a2 | 899 | add_setshow_boolean_cmd ("pascal_static-members", class_support, |
79a45b7d | 900 | &user_print_options.pascal_static_field_print, _("\ |
5bf193a2 AC |
901 | Set printing of pascal static members."), _("\ |
902 | Show printing of pascal static members."), NULL, | |
903 | NULL, | |
920d2a44 | 904 | show_pascal_static_field_print, |
5bf193a2 | 905 | &setprintlist, &showprintlist); |
373a8247 | 906 | } |