gdb/testsuite: restore configure script
[deliverable/binutils-gdb.git] / gdb / p-valprint.c
CommitLineData
373a8247 1/* Support for printing Pascal values for GDB, the GNU debugger.
5bcca90b 2
3666a048 3 Copyright (C) 2000-2021 Free Software Foundation, Inc.
373a8247
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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
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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
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19
20/* This file is derived from c-valprint.c */
21
22#include "defs.h"
04ea0df1 23#include "gdb_obstack.h"
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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"
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34#include "language.h"
35#include "target.h"
36#include "annotate.h"
37#include "p-lang.h"
eb43544b 38#include "cp-abi.h"
d3cbe7ef 39#include "cp-support.h"
77e371c0 40#include "objfiles.h"
268a13a5 41#include "gdbsupport/byte-vector.h"
7f6aba03 42#include "cli/cli-style.h"
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43\f
44
07a32858
TT
45static void pascal_object_print_value_fields (struct value *, struct ui_file *,
46 int,
47 const struct value_print_options *,
48 struct type **, int);
49
e88acd96
TT
50/* Decorations for Pascal. */
51
52static const struct generic_val_print_decorations p_decorations =
53{
54 "",
55 " + ",
56 " * I",
57 "true",
58 "false",
00272ec4
TT
59 "void",
60 "{",
61 "}"
e88acd96
TT
62};
63
426a9c18 64/* See p-lang.h. */
373a8247 65
d3eab38a 66void
46157d77
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67pascal_language::value_print_inner (struct value *val,
68 struct ui_file *stream, int recurse,
69 const struct value_print_options *options) const
426a9c18 70
373a8247 71{
426a9c18 72 struct type *type = check_typedef (value_type (val));
8ee511af 73 struct gdbarch *gdbarch = type->arch ();
34877895 74 enum bfd_endian byte_order = type_byte_order (type);
52f0bd74 75 unsigned int i = 0; /* Number of characters printed */
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76 unsigned len;
77 struct type *elttype;
78 unsigned eltlen;
5598ce11 79 int length_pos, length_size, string_pos;
6c7a06a3 80 struct type *char_type;
373a8247 81 CORE_ADDR addr;
b012acdd 82 int want_space = 0;
426a9c18 83 const gdb_byte *valaddr = value_contents_for_printing (val);
373a8247 84
78134374 85 switch (type->code ())
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86 {
87 case TYPE_CODE_ARRAY:
b926417a
TT
88 {
89 LONGEST low_bound, high_bound;
373a8247 90
b926417a
TT
91 if (get_array_bounds (type, &low_bound, &high_bound))
92 {
93 len = high_bound - low_bound + 1;
94 elttype = check_typedef (TYPE_TARGET_TYPE (type));
95 eltlen = TYPE_LENGTH (elttype);
b926417a
TT
96 /* If 's' format is used, try to print out as string.
97 If no format is given, print as string if element type
98 is of TYPE_CODE_CHAR and element size is 1,2 or 4. */
99 if (options->format == 's'
100 || ((eltlen == 1 || eltlen == 2 || eltlen == 4)
78134374 101 && elttype->code () == TYPE_CODE_CHAR
b926417a
TT
102 && options->format == 0))
103 {
104 /* If requested, look for the first null char and only print
105 elements up to it. */
106 if (options->stop_print_at_null)
107 {
108 unsigned int temp_len;
109
110 /* Look for a NULL char. */
111 for (temp_len = 0;
426a9c18
TT
112 extract_unsigned_integer (valaddr + temp_len * eltlen,
113 eltlen, byte_order)
b926417a
TT
114 && temp_len < len && temp_len < options->print_max;
115 temp_len++);
116 len = temp_len;
117 }
118
5cc0917c
AB
119 printstr (stream, TYPE_TARGET_TYPE (type), valaddr, len,
120 NULL, 0, options);
b926417a
TT
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 }
426a9c18 137 value_print_array_elements (val, stream, recurse, options, i);
b926417a
TT
138 fprintf_filtered (stream, "}");
139 }
140 break;
141 }
142 /* Array of unspecified length: treat like pointer to first elt. */
426a9c18 143 addr = value_address (val);
b926417a 144 }
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145 goto print_unpacked_pointer;
146
147 case TYPE_CODE_PTR:
79a45b7d 148 if (options->format && options->format != 's')
373a8247 149 {
426a9c18 150 value_print_scalar_formatted (val, options, 0, stream);
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151 break;
152 }
79a45b7d 153 if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type))
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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. */
426a9c18 159 addr = extract_unsigned_integer (valaddr,
e17a4113 160 TYPE_LENGTH (type), byte_order);
edf0c1b7 161 print_address_demangle (options, gdbarch, addr, stream, demangle);
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162 break;
163 }
91e8df85 164 check_typedef (TYPE_TARGET_TYPE (type));
e13eedd5 165
426a9c18 166 addr = unpack_pointer (type, valaddr);
e13eedd5
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167 print_unpacked_pointer:
168 elttype = check_typedef (TYPE_TARGET_TYPE (type));
169
78134374 170 if (elttype->code () == 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
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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
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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
78134374 186 && (elttype->code () == TYPE_CODE_INT
dda83cd7
SM
187 || elttype->code () == TYPE_CODE_CHAR))
188 || ((TYPE_LENGTH (elttype) == 2 || TYPE_LENGTH (elttype) == 4)
189 && elttype->code () == TYPE_CODE_CHAR))
e13eedd5
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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
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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. */
46157d77
AB
203 if (pascal_is_string_type (elttype, &length_pos, &length_size,
204 &string_pos, &char_type, NULL) > 0
e13eedd5
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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
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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
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220 }
221 else if (pascal_object_is_vtbl_member (type))
222 {
0df8b418 223 /* Print vtbl's nicely. */
426a9c18 224 CORE_ADDR vt_address = unpack_pointer (type, valaddr);
7cbd4a93 225 struct bound_minimal_symbol msymbol =
ad3bbd48
MS
226 lookup_minimal_symbol_by_pc (vt_address);
227
9cb709b6
TT
228 /* If 'symbol_print' is set, we did the work above. */
229 if (!options->symbol_print
7cbd4a93 230 && (msymbol.minsym != NULL)
77e371c0 231 && (vt_address == BMSYMBOL_VALUE_ADDRESS (msymbol)))
373a8247 232 {
b012acdd
TT
233 if (want_space)
234 fputs_filtered (" ", stream);
235 fputs_filtered ("<", stream);
c9d95fa3 236 fputs_filtered (msymbol.minsym->print_name (), stream);
e13eedd5 237 fputs_filtered (">", stream);
b012acdd 238 want_space = 1;
373a8247 239 }
e13eedd5 240 if (vt_address && options->vtblprint)
373a8247 241 {
e13eedd5 242 struct value *vt_val;
be903358 243 struct symbol *wsym = NULL;
e13eedd5 244 struct type *wtype;
373a8247 245
b012acdd
TT
246 if (want_space)
247 fputs_filtered (" ", stream);
248
7cbd4a93 249 if (msymbol.minsym != NULL)
de63c46b 250 {
c9d95fa3 251 const char *search_name = msymbol.minsym->search_name ();
582942f4 252 wsym = lookup_symbol_search_name (search_name, NULL,
de63c46b
PA
253 VAR_DOMAIN).symbol;
254 }
e13eedd5
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255
256 if (wsym)
373a8247 257 {
e13eedd5 258 wtype = SYMBOL_TYPE (wsym);
373a8247 259 }
e13eedd5 260 else
373a8247 261 {
e13eedd5
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262 wtype = TYPE_TARGET_TYPE (type);
263 }
264 vt_val = value_at (wtype, vt_address);
265 common_val_print (vt_val, stream, recurse + 1, options,
266 current_language);
2a998fc0 267 if (options->prettyformat)
e13eedd5
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268 {
269 fprintf_filtered (stream, "\n");
270 print_spaces_filtered (2 + 2 * recurse, stream);
373a8247
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271 }
272 }
373a8247 273 }
e13eedd5 274
d3eab38a 275 return;
373a8247 276
373a8247 277 case TYPE_CODE_REF:
e88acd96
TT
278 case TYPE_CODE_ENUM:
279 case TYPE_CODE_FLAGS:
280 case TYPE_CODE_FUNC:
281 case TYPE_CODE_RANGE:
282 case TYPE_CODE_INT:
283 case TYPE_CODE_FLT:
284 case TYPE_CODE_VOID:
285 case TYPE_CODE_ERROR:
286 case TYPE_CODE_UNDEF:
287 case TYPE_CODE_BOOL:
288 case TYPE_CODE_CHAR:
426a9c18 289 generic_value_print (val, stream, recurse, options, &p_decorations);
373a8247
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290 break;
291
292 case TYPE_CODE_UNION:
79a45b7d 293 if (recurse && !options->unionprint)
373a8247
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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
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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,
940da03e
SM
308 extract_unsigned_integer
309 (valaddr + TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8,
310 TYPE_LENGTH (type->field (VTBL_FNADDR_OFFSET).type ()),
311 byte_order),
b276f1bb 312 stream, demangle);
373a8247
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313 }
314 else
315 {
46157d77
AB
316 if (pascal_is_string_type (type, &length_pos, &length_size,
317 &string_pos, &char_type, NULL) > 0)
373a8247 318 {
426a9c18
TT
319 len = extract_unsigned_integer (valaddr + length_pos,
320 length_size, byte_order);
5cc0917c
AB
321 printstr (stream, char_type, valaddr + string_pos, len,
322 NULL, 0, options);
373a8247
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323 }
324 else
426a9c18
TT
325 pascal_object_print_value_fields (val, stream, recurse,
326 options, NULL, 0);
373a8247
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327 }
328 break;
329
373a8247 330 case TYPE_CODE_SET:
3d967001 331 elttype = type->index_type ();
f168693b 332 elttype = check_typedef (elttype);
e46d3488 333 if (elttype->is_stub ())
373a8247 334 {
7f6aba03 335 fprintf_styled (stream, metadata_style.style (), "<incomplete type>");
373a8247
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336 break;
337 }
338 else
339 {
340 struct type *range = elttype;
341 LONGEST low_bound, high_bound;
373a8247
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342 int need_comma = 0;
343
6b1755ce 344 fputs_filtered ("[", stream);
373a8247 345
1f8d2881
SM
346 int bound_info = (get_discrete_bounds (range, &low_bound, &high_bound)
347 ? 0 : -1);
7a081a30
PM
348 if (low_bound == 0 && high_bound == -1 && TYPE_LENGTH (type) > 0)
349 {
350 /* If we know the size of the set type, we can figure out the
351 maximum value. */
b926417a 352 bound_info = 0;
7a081a30 353 high_bound = TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1;
8c2e4e06 354 range->bounds ()->high.set_const_val (high_bound);
7a081a30 355 }
373a8247 356 maybe_bad_bstring:
b926417a 357 if (bound_info < 0)
373a8247 358 {
7f6aba03 359 fputs_styled ("<error value>", metadata_style.style (), stream);
373a8247
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360 goto done;
361 }
362
363 for (i = low_bound; i <= high_bound; i++)
364 {
426a9c18 365 int element = value_bit_index (type, valaddr, i);
ad3bbd48 366
373a8247
PM
367 if (element < 0)
368 {
369 i = element;
370 goto maybe_bad_bstring;
371 }
6b1755ce 372 if (element)
373a8247
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373 {
374 if (need_comma)
375 fputs_filtered (", ", stream);
376 print_type_scalar (range, i, stream);
377 need_comma = 1;
378
3e43a32a 379 if (i + 1 <= high_bound
426a9c18 380 && value_bit_index (type, valaddr, ++i))
373a8247
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381 {
382 int j = i;
ad3bbd48 383
373a8247
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384 fputs_filtered ("..", stream);
385 while (i + 1 <= high_bound
426a9c18 386 && value_bit_index (type, valaddr, ++i))
373a8247
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387 j = i;
388 print_type_scalar (range, j, stream);
389 }
390 }
391 }
392 done:
6b1755ce 393 fputs_filtered ("]", stream);
373a8247
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394 }
395 break;
396
373a8247 397 default:
3e43a32a 398 error (_("Invalid pascal type code %d in symbol table."),
78134374 399 type->code ());
373a8247 400 }
373a8247 401}
c0941be6 402
426a9c18 403\f
c0941be6 404void
46157d77
AB
405pascal_language::value_print (struct value *val, struct ui_file *stream,
406 const struct value_print_options *options) const
c0941be6 407{
426a9c18
TT
408 struct type *type = value_type (val);
409 struct value_print_options opts = *options;
64d64d3a 410
426a9c18 411 opts.deref_ref = 1;
64d64d3a 412
426a9c18 413 /* If it is a pointer, indicate what it points to.
64d64d3a 414
426a9c18 415 Print type also if it is a reference.
64d64d3a 416
426a9c18
TT
417 Object pascal: if it is a member pointer, we will take care
418 of that when we print it. */
78134374
SM
419 if (type->code () == TYPE_CODE_PTR
420 || type->code () == TYPE_CODE_REF)
426a9c18
TT
421 {
422 /* Hack: remove (char *) for char strings. Their
dda83cd7 423 type is indicated by the quoted string anyway. */
78134374 424 if (type->code () == TYPE_CODE_PTR
7d93a1e0
SM
425 && type->name () == NULL
426 && TYPE_TARGET_TYPE (type)->name () != NULL
427 && strcmp (TYPE_TARGET_TYPE (type)->name (), "char") == 0)
64d64d3a 428 {
426a9c18 429 /* Print nothing. */
64d64d3a 430 }
426a9c18 431 else
64d64d3a 432 {
426a9c18
TT
433 fprintf_filtered (stream, "(");
434 type_print (type, "", stream, -1);
435 fprintf_filtered (stream, ") ");
64d64d3a 436 }
426a9c18
TT
437 }
438 common_val_print (val, stream, 0, &opts, current_language);
439}
64d64d3a 440
64d64d3a 441
426a9c18
TT
442static void
443show_pascal_static_field_print (struct ui_file *file, int from_tty,
444 struct cmd_list_element *c, const char *value)
445{
446 fprintf_filtered (file, _("Printing of pascal static members is %s.\n"),
447 value);
448}
64d64d3a 449
426a9c18
TT
450static struct obstack dont_print_vb_obstack;
451static struct obstack dont_print_statmem_obstack;
64d64d3a 452
426a9c18
TT
453static void pascal_object_print_static_field (struct value *,
454 struct ui_file *, int,
455 const struct value_print_options *);
64d64d3a 456
426a9c18
TT
457static void pascal_object_print_value (struct value *, struct ui_file *, int,
458 const struct value_print_options *,
459 struct type **);
64d64d3a 460
426a9c18
TT
461/* It was changed to this after 2.4.5. */
462const char pascal_vtbl_ptr_name[] =
463{'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0};
64d64d3a 464
426a9c18
TT
465/* Return truth value for assertion that TYPE is of the type
466 "pointer to virtual function". */
64d64d3a 467
426a9c18
TT
468int
469pascal_object_is_vtbl_ptr_type (struct type *type)
470{
7d93a1e0 471 const char *type_name = type->name ();
373a8247 472
fe978cb0
PA
473 return (type_name != NULL
474 && strcmp (type_name, pascal_vtbl_ptr_name) == 0);
373a8247
PM
475}
476
477/* Return truth value for the assertion that TYPE is of the type
478 "pointer to virtual function table". */
479
480int
fba45db2 481pascal_object_is_vtbl_member (struct type *type)
373a8247 482{
78134374 483 if (type->code () == TYPE_CODE_PTR)
373a8247
PM
484 {
485 type = TYPE_TARGET_TYPE (type);
78134374 486 if (type->code () == TYPE_CODE_ARRAY)
373a8247
PM
487 {
488 type = TYPE_TARGET_TYPE (type);
78134374 489 if (type->code () == TYPE_CODE_STRUCT /* If not using
0df8b418 490 thunks. */
78134374 491 || type->code () == TYPE_CODE_PTR) /* If using thunks. */
373a8247
PM
492 {
493 /* Virtual functions tables are full of pointers
dda83cd7 494 to virtual functions. */
373a8247
PM
495 return pascal_object_is_vtbl_ptr_type (type);
496 }
497 }
498 }
499 return 0;
500}
501
46157d77 502/* Helper function for print pascal objects.
07a32858
TT
503
504 VAL, STREAM, RECURSE, and OPTIONS have the same meanings as in
505 pascal_object_print_value and c_value_print.
506
507 DONT_PRINT is an array of baseclass types that we
508 should not print, or zero if called from top level. */
509
510static void
511pascal_object_print_value_fields (struct value *val, struct ui_file *stream,
512 int recurse,
513 const struct value_print_options *options,
514 struct type **dont_print_vb,
515 int dont_print_statmem)
516{
517 int i, len, n_baseclasses;
518 char *last_dont_print
519 = (char *) obstack_next_free (&dont_print_statmem_obstack);
520
521 struct type *type = check_typedef (value_type (val));
522
523 fprintf_filtered (stream, "{");
1f704f76 524 len = type->num_fields ();
07a32858
TT
525 n_baseclasses = TYPE_N_BASECLASSES (type);
526
527 /* Print out baseclasses such that we don't print
528 duplicates of virtual baseclasses. */
529 if (n_baseclasses > 0)
530 pascal_object_print_value (val, stream, recurse + 1,
531 options, dont_print_vb);
532
533 if (!len && n_baseclasses == 1)
534 fprintf_styled (stream, metadata_style.style (), "<No data fields>");
535 else
536 {
537 struct obstack tmp_obstack = dont_print_statmem_obstack;
538 int fields_seen = 0;
539 const gdb_byte *valaddr = value_contents_for_printing (val);
540
541 if (dont_print_statmem == 0)
542 {
543 /* If we're at top level, carve out a completely fresh
544 chunk of the obstack and use that until this particular
545 invocation returns. */
546 obstack_finish (&dont_print_statmem_obstack);
547 }
548
549 for (i = n_baseclasses; i < len; i++)
550 {
551 /* If requested, skip printing of static fields. */
552 if (!options->pascal_static_field_print
ceacbf6e 553 && field_is_static (&type->field (i)))
07a32858
TT
554 continue;
555 if (fields_seen)
556 fprintf_filtered (stream, ", ");
557 else if (n_baseclasses > 0)
558 {
559 if (options->prettyformat)
560 {
561 fprintf_filtered (stream, "\n");
562 print_spaces_filtered (2 + 2 * recurse, stream);
563 fputs_filtered ("members of ", stream);
7d93a1e0 564 fputs_filtered (type->name (), stream);
07a32858
TT
565 fputs_filtered (": ", stream);
566 }
567 }
568 fields_seen = 1;
569
570 if (options->prettyformat)
571 {
572 fprintf_filtered (stream, "\n");
573 print_spaces_filtered (2 + 2 * recurse, stream);
574 }
575 else
576 {
577 wrap_here (n_spaces (2 + 2 * recurse));
578 }
579
940da03e 580 annotate_field_begin (type->field (i).type ());
07a32858 581
ceacbf6e 582 if (field_is_static (&type->field (i)))
07a32858
TT
583 {
584 fputs_filtered ("static ", stream);
585 fprintf_symbol_filtered (stream,
586 TYPE_FIELD_NAME (type, i),
587 current_language->la_language,
588 DMGL_PARAMS | DMGL_ANSI);
589 }
590 else
591 fputs_styled (TYPE_FIELD_NAME (type, i),
592 variable_name_style.style (), stream);
593 annotate_field_name_end ();
594 fputs_filtered (" = ", stream);
595 annotate_field_value ();
596
ceacbf6e 597 if (!field_is_static (&type->field (i))
07a32858
TT
598 && TYPE_FIELD_PACKED (type, i))
599 {
600 struct value *v;
601
602 /* Bitfields require special handling, especially due to byte
dda83cd7 603 order problems. */
07a32858
TT
604 if (TYPE_FIELD_IGNORE (type, i))
605 {
606 fputs_styled ("<optimized out or zero length>",
607 metadata_style.style (), stream);
608 }
609 else if (value_bits_synthetic_pointer (val,
610 TYPE_FIELD_BITPOS (type,
611 i),
612 TYPE_FIELD_BITSIZE (type,
613 i)))
614 {
615 fputs_styled (_("<synthetic pointer>"),
616 metadata_style.style (), stream);
617 }
618 else
619 {
620 struct value_print_options opts = *options;
621
622 v = value_field_bitfield (type, i, valaddr, 0, val);
623
624 opts.deref_ref = 0;
625 common_val_print (v, stream, recurse + 1, &opts,
626 current_language);
627 }
628 }
629 else
630 {
631 if (TYPE_FIELD_IGNORE (type, i))
632 {
633 fputs_styled ("<optimized out or zero length>",
634 metadata_style.style (), stream);
635 }
ceacbf6e 636 else if (field_is_static (&type->field (i)))
07a32858
TT
637 {
638 /* struct value *v = value_static_field (type, i);
639 v4.17 specific. */
640 struct value *v;
641
642 v = value_field_bitfield (type, i, valaddr, 0, val);
643
644 if (v == NULL)
645 val_print_optimized_out (NULL, stream);
646 else
647 pascal_object_print_static_field (v, stream, recurse + 1,
648 options);
649 }
650 else
651 {
652 struct value_print_options opts = *options;
653
654 opts.deref_ref = 0;
655
656 struct value *v = value_primitive_field (val, 0, i,
657 value_type (val));
658 common_val_print (v, stream, recurse + 1, &opts,
659 current_language);
660 }
661 }
662 annotate_field_end ();
663 }
664
665 if (dont_print_statmem == 0)
666 {
667 /* Free the space used to deal with the printing
668 of the members from top level. */
669 obstack_free (&dont_print_statmem_obstack, last_dont_print);
670 dont_print_statmem_obstack = tmp_obstack;
671 }
672
673 if (options->prettyformat)
674 {
675 fprintf_filtered (stream, "\n");
676 print_spaces_filtered (2 * recurse, stream);
677 }
678 }
679 fprintf_filtered (stream, "}");
680}
681
07a32858
TT
682/* Special val_print routine to avoid printing multiple copies of virtual
683 baseclasses. */
684
685static void
686pascal_object_print_value (struct value *val, struct ui_file *stream,
687 int recurse,
688 const struct value_print_options *options,
689 struct type **dont_print_vb)
690{
691 struct type **last_dont_print
692 = (struct type **) obstack_next_free (&dont_print_vb_obstack);
693 struct obstack tmp_obstack = dont_print_vb_obstack;
694 struct type *type = check_typedef (value_type (val));
695 int i, n_baseclasses = TYPE_N_BASECLASSES (type);
696
697 if (dont_print_vb == 0)
698 {
699 /* If we're at top level, carve out a completely fresh
dda83cd7
SM
700 chunk of the obstack and use that until this particular
701 invocation returns. */
07a32858
TT
702 /* Bump up the high-water mark. Now alpha is omega. */
703 obstack_finish (&dont_print_vb_obstack);
704 }
705
706 for (i = 0; i < n_baseclasses; i++)
707 {
708 LONGEST boffset = 0;
709 struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
7d93a1e0 710 const char *basename = baseclass->name ();
07a32858
TT
711 int skip = 0;
712
713 if (BASETYPE_VIA_VIRTUAL (type, i))
714 {
715 struct type **first_dont_print
716 = (struct type **) obstack_base (&dont_print_vb_obstack);
717
718 int j = (struct type **) obstack_next_free (&dont_print_vb_obstack)
719 - first_dont_print;
720
721 while (--j >= 0)
722 if (baseclass == first_dont_print[j])
723 goto flush_it;
724
725 obstack_ptr_grow (&dont_print_vb_obstack, baseclass);
726 }
727
728 struct value *base_value;
729 try
730 {
731 base_value = value_primitive_field (val, 0, i, type);
732 }
733 catch (const gdb_exception_error &ex)
734 {
771dd3a8 735 base_value = nullptr;
07a32858
TT
736 if (ex.error == NOT_AVAILABLE_ERROR)
737 skip = -1;
738 else
739 skip = 1;
740 }
741
742 if (skip == 0)
743 {
744 /* The virtual base class pointer might have been clobbered by the
745 user program. Make sure that it still points to a valid memory
746 location. */
747
748 if (boffset < 0 || boffset >= TYPE_LENGTH (type))
749 {
750 CORE_ADDR address= value_address (val);
751 gdb::byte_vector buf (TYPE_LENGTH (baseclass));
752
753 if (target_read_memory (address + boffset, buf.data (),
754 TYPE_LENGTH (baseclass)) != 0)
755 skip = 1;
756 base_value = value_from_contents_and_address (baseclass,
757 buf.data (),
758 address + boffset);
759 baseclass = value_type (base_value);
760 boffset = 0;
761 }
762 }
763
764 if (options->prettyformat)
765 {
766 fprintf_filtered (stream, "\n");
767 print_spaces_filtered (2 * recurse, stream);
768 }
769 fputs_filtered ("<", stream);
770 /* Not sure what the best notation is in the case where there is no
dda83cd7 771 baseclass name. */
07a32858
TT
772
773 fputs_filtered (basename ? basename : "", stream);
774 fputs_filtered ("> = ", stream);
775
776 if (skip < 0)
777 val_print_unavailable (stream);
778 else if (skip > 0)
779 val_print_invalid_address (stream);
780 else
781 pascal_object_print_value_fields
782 (base_value, stream, recurse, options,
783 (struct type **) obstack_base (&dont_print_vb_obstack),
784 0);
785 fputs_filtered (", ", stream);
786
787 flush_it:
788 ;
789 }
790
791 if (dont_print_vb == 0)
792 {
793 /* Free the space used to deal with the printing
dda83cd7 794 of this type from top level. */
07a32858
TT
795 obstack_free (&dont_print_vb_obstack, last_dont_print);
796 /* Reset watermark so that we can continue protecting
dda83cd7 797 ourselves from whatever we were protecting ourselves. */
07a32858
TT
798 dont_print_vb_obstack = tmp_obstack;
799 }
800}
801
373a8247
PM
802/* Print value of a static member.
803 To avoid infinite recursion when printing a class that contains
804 a static instance of the class, we keep the addresses of all printed
805 static member classes in an obstack and refuse to print them more
806 than once.
807
79a45b7d 808 VAL contains the value to print, STREAM, RECURSE, and OPTIONS
373a8247
PM
809 have the same meanings as in c_val_print. */
810
811static void
806048c6 812pascal_object_print_static_field (struct value *val,
79a45b7d
TT
813 struct ui_file *stream,
814 int recurse,
815 const struct value_print_options *options)
373a8247 816{
806048c6 817 struct type *type = value_type (val);
79a45b7d 818 struct value_print_options opts;
806048c6 819
686d4def
PA
820 if (value_entirely_optimized_out (val))
821 {
822 val_print_optimized_out (val, stream);
823 return;
824 }
825
78134374 826 if (type->code () == TYPE_CODE_STRUCT)
373a8247 827 {
42ae5230 828 CORE_ADDR *first_dont_print, addr;
373a8247
PM
829 int i;
830
831 first_dont_print
832 = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack);
833 i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack)
834 - first_dont_print;
835
836 while (--i >= 0)
837 {
42ae5230 838 if (value_address (val) == first_dont_print[i])
373a8247 839 {
2dbc041e
TT
840 fputs_styled (_("\
841<same as static member of an already seen type>"),
842 metadata_style.style (), stream);
373a8247
PM
843 return;
844 }
845 }
846
42ae5230
TT
847 addr = value_address (val);
848 obstack_grow (&dont_print_statmem_obstack, (char *) &addr,
373a8247
PM
849 sizeof (CORE_ADDR));
850
f168693b 851 type = check_typedef (type);
426a9c18
TT
852 pascal_object_print_value_fields (val, stream, recurse,
853 options, NULL, 1);
373a8247
PM
854 return;
855 }
79a45b7d
TT
856
857 opts = *options;
858 opts.deref_ref = 0;
859 common_val_print (val, stream, recurse, &opts, current_language);
373a8247
PM
860}
861
6c265988 862void _initialize_pascal_valprint ();
373a8247 863void
6c265988 864_initialize_pascal_valprint ()
373a8247 865{
5bf193a2 866 add_setshow_boolean_cmd ("pascal_static-members", class_support,
79a45b7d 867 &user_print_options.pascal_static_field_print, _("\
5bf193a2
AC
868Set printing of pascal static members."), _("\
869Show printing of pascal static members."), NULL,
870 NULL,
920d2a44 871 show_pascal_static_field_print,
5bf193a2 872 &setprintlist, &showprintlist);
373a8247 873}
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