Commit | Line | Data |
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373a8247 | 1 | /* Support for printing Pascal values for GDB, the GNU debugger. |
5bcca90b | 2 | |
6aba47ca | 3 | Copyright (C) 2000, 2001, 2003, 2005, 2006, 2007 |
4f2aea11 | 4 | Free Software Foundation, Inc. |
373a8247 PM |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
373a8247 PM |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
373a8247 PM |
20 | |
21 | /* This file is derived from c-valprint.c */ | |
22 | ||
23 | #include "defs.h" | |
04ea0df1 | 24 | #include "gdb_obstack.h" |
373a8247 PM |
25 | #include "symtab.h" |
26 | #include "gdbtypes.h" | |
27 | #include "expression.h" | |
28 | #include "value.h" | |
29 | #include "command.h" | |
30 | #include "gdbcmd.h" | |
31 | #include "gdbcore.h" | |
32 | #include "demangle.h" | |
33 | #include "valprint.h" | |
3172dc30 | 34 | #include "typeprint.h" |
373a8247 PM |
35 | #include "language.h" |
36 | #include "target.h" | |
37 | #include "annotate.h" | |
38 | #include "p-lang.h" | |
eb43544b | 39 | #include "cp-abi.h" |
d3cbe7ef | 40 | #include "cp-support.h" |
373a8247 PM |
41 | \f |
42 | ||
43 | ||
44 | ||
45 | /* Print data of type TYPE located at VALADDR (within GDB), which came from | |
46 | the inferior at address ADDRESS, onto stdio stream STREAM according to | |
47 | FORMAT (a letter or 0 for natural format). The data at VALADDR is in | |
48 | target byte order. | |
49 | ||
50 | If the data are a string pointer, returns the number of string characters | |
51 | printed. | |
52 | ||
53 | If DEREF_REF is nonzero, then dereference references, otherwise just print | |
54 | them like pointers. | |
55 | ||
56 | The PRETTY parameter controls prettyprinting. */ | |
57 | ||
58 | ||
59 | int | |
fc1a4b47 | 60 | pascal_val_print (struct type *type, const gdb_byte *valaddr, |
a2bd3dcd AC |
61 | int embedded_offset, CORE_ADDR address, |
62 | struct ui_file *stream, int format, int deref_ref, | |
63 | int recurse, enum val_prettyprint pretty) | |
373a8247 | 64 | { |
52f0bd74 | 65 | unsigned int i = 0; /* Number of characters printed */ |
373a8247 PM |
66 | unsigned len; |
67 | struct type *elttype; | |
68 | unsigned eltlen; | |
5598ce11 PM |
69 | int length_pos, length_size, string_pos; |
70 | int char_size; | |
373a8247 PM |
71 | LONGEST val; |
72 | CORE_ADDR addr; | |
73 | ||
74 | CHECK_TYPEDEF (type); | |
75 | switch (TYPE_CODE (type)) | |
76 | { | |
77 | case TYPE_CODE_ARRAY: | |
78 | if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0) | |
79 | { | |
80 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
81 | eltlen = TYPE_LENGTH (elttype); | |
82 | len = TYPE_LENGTH (type) / eltlen; | |
83 | if (prettyprint_arrays) | |
84 | { | |
85 | print_spaces_filtered (2 + 2 * recurse, stream); | |
86 | } | |
87 | /* For an array of chars, print with string syntax. */ | |
88 | if (eltlen == 1 && | |
89 | ((TYPE_CODE (elttype) == TYPE_CODE_INT) | |
90 | || ((current_language->la_language == language_m2) | |
91 | && (TYPE_CODE (elttype) == TYPE_CODE_CHAR))) | |
92 | && (format == 0 || format == 's')) | |
93 | { | |
94 | /* If requested, look for the first null char and only print | |
95 | elements up to it. */ | |
96 | if (stop_print_at_null) | |
97 | { | |
98 | unsigned int temp_len; | |
99 | ||
100 | /* Look for a NULL char. */ | |
101 | for (temp_len = 0; | |
102 | (valaddr + embedded_offset)[temp_len] | |
103 | && temp_len < len && temp_len < print_max; | |
104 | temp_len++); | |
105 | len = temp_len; | |
106 | } | |
107 | ||
108 | LA_PRINT_STRING (stream, valaddr + embedded_offset, len, 1, 0); | |
109 | i = len; | |
110 | } | |
111 | else | |
112 | { | |
113 | fprintf_filtered (stream, "{"); | |
114 | /* If this is a virtual function table, print the 0th | |
115 | entry specially, and the rest of the members normally. */ | |
116 | if (pascal_object_is_vtbl_ptr_type (elttype)) | |
117 | { | |
118 | i = 1; | |
119 | fprintf_filtered (stream, "%d vtable entries", len - 1); | |
120 | } | |
121 | else | |
122 | { | |
123 | i = 0; | |
124 | } | |
125 | val_print_array_elements (type, valaddr + embedded_offset, address, stream, | |
126 | format, deref_ref, recurse, pretty, i); | |
127 | fprintf_filtered (stream, "}"); | |
128 | } | |
129 | break; | |
130 | } | |
131 | /* Array of unspecified length: treat like pointer to first elt. */ | |
132 | addr = address; | |
133 | goto print_unpacked_pointer; | |
134 | ||
135 | case TYPE_CODE_PTR: | |
136 | if (format && format != 's') | |
137 | { | |
138 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
139 | break; | |
140 | } | |
141 | if (vtblprint && pascal_object_is_vtbl_ptr_type (type)) | |
142 | { | |
143 | /* Print the unmangled name if desired. */ | |
144 | /* Print vtable entry - we only get here if we ARE using | |
145 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */ | |
b276f1bb AC |
146 | /* Extract the address, assume that it is unsigned. */ |
147 | print_address_demangle (extract_unsigned_integer (valaddr + embedded_offset, TYPE_LENGTH (type)), | |
373a8247 PM |
148 | stream, demangle); |
149 | break; | |
150 | } | |
151 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
373a8247 PM |
152 | { |
153 | addr = unpack_pointer (type, valaddr + embedded_offset); | |
154 | print_unpacked_pointer: | |
155 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
156 | ||
157 | if (TYPE_CODE (elttype) == TYPE_CODE_FUNC) | |
158 | { | |
159 | /* Try to print what function it points to. */ | |
160 | print_address_demangle (addr, stream, demangle); | |
161 | /* Return value is irrelevant except for string pointers. */ | |
162 | return (0); | |
163 | } | |
164 | ||
165 | if (addressprint && format != 's') | |
166 | { | |
66bf4b3a | 167 | deprecated_print_address_numeric (addr, 1, stream); |
373a8247 PM |
168 | } |
169 | ||
170 | /* For a pointer to char or unsigned char, also print the string | |
171 | pointed to, unless pointer is null. */ | |
172 | if (TYPE_LENGTH (elttype) == 1 | |
173 | && TYPE_CODE (elttype) == TYPE_CODE_INT | |
174 | && (format == 0 || format == 's') | |
175 | && addr != 0) | |
176 | { | |
177 | /* no wide string yet */ | |
178 | i = val_print_string (addr, -1, 1, stream); | |
179 | } | |
180 | /* also for pointers to pascal strings */ | |
181 | /* Note: this is Free Pascal specific: | |
182 | as GDB does not recognize stabs pascal strings | |
183 | Pascal strings are mapped to records | |
184 | with lowercase names PM */ | |
e2625b33 PM |
185 | if (is_pascal_string_type (elttype, &length_pos, &length_size, |
186 | &string_pos, &char_size, NULL) | |
5598ce11 | 187 | && addr != 0) |
373a8247 | 188 | { |
5598ce11 PM |
189 | ULONGEST string_length; |
190 | void *buffer; | |
191 | buffer = xmalloc (length_size); | |
192 | read_memory (addr + length_pos, buffer, length_size); | |
193 | string_length = extract_unsigned_integer (buffer, length_size); | |
194 | xfree (buffer); | |
195 | i = val_print_string (addr + string_pos, string_length, char_size, stream); | |
373a8247 PM |
196 | } |
197 | else if (pascal_object_is_vtbl_member (type)) | |
198 | { | |
199 | /* print vtbl's nicely */ | |
200 | CORE_ADDR vt_address = unpack_pointer (type, valaddr + embedded_offset); | |
201 | ||
202 | struct minimal_symbol *msymbol = | |
203 | lookup_minimal_symbol_by_pc (vt_address); | |
5598ce11 PM |
204 | if ((msymbol != NULL) |
205 | && (vt_address == SYMBOL_VALUE_ADDRESS (msymbol))) | |
373a8247 PM |
206 | { |
207 | fputs_filtered (" <", stream); | |
de5ad195 | 208 | fputs_filtered (SYMBOL_PRINT_NAME (msymbol), stream); |
373a8247 PM |
209 | fputs_filtered (">", stream); |
210 | } | |
211 | if (vt_address && vtblprint) | |
212 | { | |
6943961c | 213 | struct value *vt_val; |
373a8247 PM |
214 | struct symbol *wsym = (struct symbol *) NULL; |
215 | struct type *wtype; | |
373a8247 PM |
216 | struct block *block = (struct block *) NULL; |
217 | int is_this_fld; | |
218 | ||
219 | if (msymbol != NULL) | |
22abf04a | 220 | wsym = lookup_symbol (DEPRECATED_SYMBOL_NAME (msymbol), block, |
cdef89d0 | 221 | VAR_DOMAIN, &is_this_fld, NULL); |
373a8247 PM |
222 | |
223 | if (wsym) | |
224 | { | |
225 | wtype = SYMBOL_TYPE (wsym); | |
226 | } | |
227 | else | |
228 | { | |
229 | wtype = TYPE_TARGET_TYPE (type); | |
230 | } | |
00a4c844 | 231 | vt_val = value_at (wtype, vt_address); |
806048c6 DJ |
232 | common_val_print (vt_val, stream, format, deref_ref, |
233 | recurse + 1, pretty); | |
373a8247 PM |
234 | if (pretty) |
235 | { | |
236 | fprintf_filtered (stream, "\n"); | |
237 | print_spaces_filtered (2 + 2 * recurse, stream); | |
238 | } | |
239 | } | |
240 | } | |
241 | ||
242 | /* Return number of characters printed, including the terminating | |
243 | '\0' if we reached the end. val_print_string takes care including | |
244 | the terminating '\0' if necessary. */ | |
245 | return i; | |
246 | } | |
247 | break; | |
248 | ||
373a8247 PM |
249 | case TYPE_CODE_REF: |
250 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
373a8247 PM |
251 | if (addressprint) |
252 | { | |
253 | fprintf_filtered (stream, "@"); | |
b276f1bb | 254 | /* Extract the address, assume that it is unsigned. */ |
66bf4b3a | 255 | deprecated_print_address_numeric |
b276f1bb | 256 | (extract_unsigned_integer (valaddr + embedded_offset, |
819844ad UW |
257 | gdbarch_ptr_bit (current_gdbarch) |
258 | / HOST_CHAR_BIT), | |
b276f1bb | 259 | 1, stream); |
373a8247 PM |
260 | if (deref_ref) |
261 | fputs_filtered (": ", stream); | |
262 | } | |
263 | /* De-reference the reference. */ | |
264 | if (deref_ref) | |
265 | { | |
266 | if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF) | |
267 | { | |
6943961c | 268 | struct value *deref_val = |
373a8247 PM |
269 | value_at |
270 | (TYPE_TARGET_TYPE (type), | |
271 | unpack_pointer (lookup_pointer_type (builtin_type_void), | |
00a4c844 | 272 | valaddr + embedded_offset)); |
806048c6 DJ |
273 | common_val_print (deref_val, stream, format, deref_ref, |
274 | recurse + 1, pretty); | |
373a8247 PM |
275 | } |
276 | else | |
277 | fputs_filtered ("???", stream); | |
278 | } | |
279 | break; | |
280 | ||
281 | case TYPE_CODE_UNION: | |
282 | if (recurse && !unionprint) | |
283 | { | |
284 | fprintf_filtered (stream, "{...}"); | |
285 | break; | |
286 | } | |
287 | /* Fall through. */ | |
288 | case TYPE_CODE_STRUCT: | |
289 | if (vtblprint && pascal_object_is_vtbl_ptr_type (type)) | |
290 | { | |
291 | /* Print the unmangled name if desired. */ | |
292 | /* Print vtable entry - we only get here if NOT using | |
293 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */ | |
b276f1bb AC |
294 | /* Extract the address, assume that it is unsigned. */ |
295 | print_address_demangle | |
296 | (extract_unsigned_integer (valaddr + embedded_offset + TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8, | |
297 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET))), | |
298 | stream, demangle); | |
373a8247 PM |
299 | } |
300 | else | |
301 | { | |
5598ce11 | 302 | if (is_pascal_string_type (type, &length_pos, &length_size, |
e2625b33 | 303 | &string_pos, &char_size, NULL)) |
373a8247 | 304 | { |
5598ce11 PM |
305 | len = extract_unsigned_integer (valaddr + embedded_offset + length_pos, length_size); |
306 | LA_PRINT_STRING (stream, valaddr + embedded_offset + string_pos, len, char_size, 0); | |
373a8247 PM |
307 | } |
308 | else | |
309 | pascal_object_print_value_fields (type, valaddr + embedded_offset, address, stream, format, | |
310 | recurse, pretty, NULL, 0); | |
311 | } | |
312 | break; | |
313 | ||
314 | case TYPE_CODE_ENUM: | |
315 | if (format) | |
316 | { | |
317 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
318 | break; | |
319 | } | |
320 | len = TYPE_NFIELDS (type); | |
321 | val = unpack_long (type, valaddr + embedded_offset); | |
322 | for (i = 0; i < len; i++) | |
323 | { | |
324 | QUIT; | |
325 | if (val == TYPE_FIELD_BITPOS (type, i)) | |
326 | { | |
327 | break; | |
328 | } | |
329 | } | |
330 | if (i < len) | |
331 | { | |
332 | fputs_filtered (TYPE_FIELD_NAME (type, i), stream); | |
333 | } | |
334 | else | |
335 | { | |
336 | print_longest (stream, 'd', 0, val); | |
337 | } | |
338 | break; | |
339 | ||
4f2aea11 MK |
340 | case TYPE_CODE_FLAGS: |
341 | if (format) | |
342 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
343 | else | |
344 | val_print_type_code_flags (type, valaddr + embedded_offset, stream); | |
345 | break; | |
346 | ||
373a8247 PM |
347 | case TYPE_CODE_FUNC: |
348 | if (format) | |
349 | { | |
350 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
351 | break; | |
352 | } | |
353 | /* FIXME, we should consider, at least for ANSI C language, eliminating | |
354 | the distinction made between FUNCs and POINTERs to FUNCs. */ | |
355 | fprintf_filtered (stream, "{"); | |
356 | type_print (type, "", stream, -1); | |
357 | fprintf_filtered (stream, "} "); | |
358 | /* Try to print what function it points to, and its address. */ | |
359 | print_address_demangle (address, stream, demangle); | |
360 | break; | |
361 | ||
362 | case TYPE_CODE_BOOL: | |
363 | format = format ? format : output_format; | |
364 | if (format) | |
365 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
366 | else | |
367 | { | |
368 | val = unpack_long (type, valaddr + embedded_offset); | |
369 | if (val == 0) | |
370 | fputs_filtered ("false", stream); | |
371 | else if (val == 1) | |
372 | fputs_filtered ("true", stream); | |
373 | else | |
374 | { | |
375 | fputs_filtered ("true (", stream); | |
376 | fprintf_filtered (stream, "%ld)", (long int) val); | |
377 | } | |
378 | } | |
379 | break; | |
380 | ||
381 | case TYPE_CODE_RANGE: | |
382 | /* FIXME: create_range_type does not set the unsigned bit in a | |
383 | range type (I think it probably should copy it from the target | |
384 | type), so we won't print values which are too large to | |
385 | fit in a signed integer correctly. */ | |
386 | /* FIXME: Doesn't handle ranges of enums correctly. (Can't just | |
387 | print with the target type, though, because the size of our type | |
388 | and the target type might differ). */ | |
389 | /* FALLTHROUGH */ | |
390 | ||
391 | case TYPE_CODE_INT: | |
392 | format = format ? format : output_format; | |
393 | if (format) | |
394 | { | |
395 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
396 | } | |
397 | else | |
398 | { | |
399 | val_print_type_code_int (type, valaddr + embedded_offset, stream); | |
400 | } | |
401 | break; | |
402 | ||
403 | case TYPE_CODE_CHAR: | |
404 | format = format ? format : output_format; | |
405 | if (format) | |
406 | { | |
407 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
408 | } | |
409 | else | |
410 | { | |
411 | val = unpack_long (type, valaddr + embedded_offset); | |
412 | if (TYPE_UNSIGNED (type)) | |
413 | fprintf_filtered (stream, "%u", (unsigned int) val); | |
414 | else | |
415 | fprintf_filtered (stream, "%d", (int) val); | |
416 | fputs_filtered (" ", stream); | |
417 | LA_PRINT_CHAR ((unsigned char) val, stream); | |
418 | } | |
419 | break; | |
420 | ||
421 | case TYPE_CODE_FLT: | |
422 | if (format) | |
423 | { | |
424 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
425 | } | |
426 | else | |
427 | { | |
428 | print_floating (valaddr + embedded_offset, type, stream); | |
429 | } | |
430 | break; | |
431 | ||
432 | case TYPE_CODE_BITSTRING: | |
433 | case TYPE_CODE_SET: | |
434 | elttype = TYPE_INDEX_TYPE (type); | |
435 | CHECK_TYPEDEF (elttype); | |
74a9bb82 | 436 | if (TYPE_STUB (elttype)) |
373a8247 PM |
437 | { |
438 | fprintf_filtered (stream, "<incomplete type>"); | |
439 | gdb_flush (stream); | |
440 | break; | |
441 | } | |
442 | else | |
443 | { | |
444 | struct type *range = elttype; | |
445 | LONGEST low_bound, high_bound; | |
446 | int i; | |
447 | int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING; | |
448 | int need_comma = 0; | |
449 | ||
450 | if (is_bitstring) | |
451 | fputs_filtered ("B'", stream); | |
452 | else | |
453 | fputs_filtered ("[", stream); | |
454 | ||
455 | i = get_discrete_bounds (range, &low_bound, &high_bound); | |
456 | maybe_bad_bstring: | |
457 | if (i < 0) | |
458 | { | |
459 | fputs_filtered ("<error value>", stream); | |
460 | goto done; | |
461 | } | |
462 | ||
463 | for (i = low_bound; i <= high_bound; i++) | |
464 | { | |
465 | int element = value_bit_index (type, valaddr + embedded_offset, i); | |
466 | if (element < 0) | |
467 | { | |
468 | i = element; | |
469 | goto maybe_bad_bstring; | |
470 | } | |
471 | if (is_bitstring) | |
472 | fprintf_filtered (stream, "%d", element); | |
473 | else if (element) | |
474 | { | |
475 | if (need_comma) | |
476 | fputs_filtered (", ", stream); | |
477 | print_type_scalar (range, i, stream); | |
478 | need_comma = 1; | |
479 | ||
480 | if (i + 1 <= high_bound && value_bit_index (type, valaddr + embedded_offset, ++i)) | |
481 | { | |
482 | int j = i; | |
483 | fputs_filtered ("..", stream); | |
484 | while (i + 1 <= high_bound | |
485 | && value_bit_index (type, valaddr + embedded_offset, ++i)) | |
486 | j = i; | |
487 | print_type_scalar (range, j, stream); | |
488 | } | |
489 | } | |
490 | } | |
491 | done: | |
492 | if (is_bitstring) | |
493 | fputs_filtered ("'", stream); | |
494 | else | |
495 | fputs_filtered ("]", stream); | |
496 | } | |
497 | break; | |
498 | ||
499 | case TYPE_CODE_VOID: | |
500 | fprintf_filtered (stream, "void"); | |
501 | break; | |
502 | ||
503 | case TYPE_CODE_ERROR: | |
504 | fprintf_filtered (stream, "<error type>"); | |
505 | break; | |
506 | ||
507 | case TYPE_CODE_UNDEF: | |
508 | /* This happens (without TYPE_FLAG_STUB set) on systems which don't use | |
509 | dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar" | |
510 | and no complete type for struct foo in that file. */ | |
511 | fprintf_filtered (stream, "<incomplete type>"); | |
512 | break; | |
513 | ||
514 | default: | |
8a3fe4f8 | 515 | error (_("Invalid pascal type code %d in symbol table."), TYPE_CODE (type)); |
373a8247 PM |
516 | } |
517 | gdb_flush (stream); | |
518 | return (0); | |
519 | } | |
520 | \f | |
521 | int | |
6943961c | 522 | pascal_value_print (struct value *val, struct ui_file *stream, int format, |
fba45db2 | 523 | enum val_prettyprint pretty) |
373a8247 | 524 | { |
df407dfe | 525 | struct type *type = value_type (val); |
373a8247 PM |
526 | |
527 | /* If it is a pointer, indicate what it points to. | |
528 | ||
529 | Print type also if it is a reference. | |
530 | ||
531 | Object pascal: if it is a member pointer, we will take care | |
532 | of that when we print it. */ | |
533 | if (TYPE_CODE (type) == TYPE_CODE_PTR || | |
534 | TYPE_CODE (type) == TYPE_CODE_REF) | |
535 | { | |
536 | /* Hack: remove (char *) for char strings. Their | |
537 | type is indicated by the quoted string anyway. */ | |
538 | if (TYPE_CODE (type) == TYPE_CODE_PTR && | |
539 | TYPE_NAME (type) == NULL && | |
6314a349 AC |
540 | TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL |
541 | && strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0) | |
373a8247 PM |
542 | { |
543 | /* Print nothing */ | |
544 | } | |
545 | else | |
546 | { | |
547 | fprintf_filtered (stream, "("); | |
548 | type_print (type, "", stream, -1); | |
549 | fprintf_filtered (stream, ") "); | |
550 | } | |
551 | } | |
806048c6 | 552 | return common_val_print (val, stream, format, 1, 0, pretty); |
373a8247 PM |
553 | } |
554 | ||
555 | ||
556 | /****************************************************************************** | |
557 | Inserted from cp-valprint | |
558 | ******************************************************************************/ | |
559 | ||
560 | extern int vtblprint; /* Controls printing of vtbl's */ | |
561 | extern int objectprint; /* Controls looking up an object's derived type | |
562 | using what we find in its vtables. */ | |
563 | static int pascal_static_field_print; /* Controls printing of static fields. */ | |
920d2a44 AC |
564 | static void |
565 | show_pascal_static_field_print (struct ui_file *file, int from_tty, | |
566 | struct cmd_list_element *c, const char *value) | |
567 | { | |
568 | fprintf_filtered (file, _("Printing of pascal static members is %s.\n"), | |
569 | value); | |
570 | } | |
373a8247 PM |
571 | |
572 | static struct obstack dont_print_vb_obstack; | |
573 | static struct obstack dont_print_statmem_obstack; | |
574 | ||
806048c6 | 575 | static void pascal_object_print_static_field (struct value *, |
6943961c AC |
576 | struct ui_file *, int, int, |
577 | enum val_prettyprint); | |
373a8247 | 578 | |
fc1a4b47 | 579 | static void pascal_object_print_value (struct type *, const gdb_byte *, |
a2bd3dcd AC |
580 | CORE_ADDR, struct ui_file *, |
581 | int, int, enum val_prettyprint, | |
582 | struct type **); | |
373a8247 | 583 | |
373a8247 PM |
584 | /* It was changed to this after 2.4.5. */ |
585 | const char pascal_vtbl_ptr_name[] = | |
586 | {'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; | |
587 | ||
588 | /* Return truth value for assertion that TYPE is of the type | |
589 | "pointer to virtual function". */ | |
590 | ||
591 | int | |
fba45db2 | 592 | pascal_object_is_vtbl_ptr_type (struct type *type) |
373a8247 PM |
593 | { |
594 | char *typename = type_name_no_tag (type); | |
595 | ||
596 | return (typename != NULL | |
6314a349 | 597 | && strcmp (typename, pascal_vtbl_ptr_name) == 0); |
373a8247 PM |
598 | } |
599 | ||
600 | /* Return truth value for the assertion that TYPE is of the type | |
601 | "pointer to virtual function table". */ | |
602 | ||
603 | int | |
fba45db2 | 604 | pascal_object_is_vtbl_member (struct type *type) |
373a8247 PM |
605 | { |
606 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
607 | { | |
608 | type = TYPE_TARGET_TYPE (type); | |
609 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
610 | { | |
611 | type = TYPE_TARGET_TYPE (type); | |
612 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */ | |
613 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */ | |
614 | { | |
615 | /* Virtual functions tables are full of pointers | |
616 | to virtual functions. */ | |
617 | return pascal_object_is_vtbl_ptr_type (type); | |
618 | } | |
619 | } | |
620 | } | |
621 | return 0; | |
622 | } | |
623 | ||
a2bd3dcd AC |
624 | /* Mutually recursive subroutines of pascal_object_print_value and |
625 | c_val_print to print out a structure's fields: | |
626 | pascal_object_print_value_fields and pascal_object_print_value. | |
373a8247 PM |
627 | |
628 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the | |
629 | same meanings as in pascal_object_print_value and c_val_print. | |
630 | ||
631 | DONT_PRINT is an array of baseclass types that we | |
632 | should not print, or zero if called from top level. */ | |
633 | ||
634 | void | |
fc1a4b47 | 635 | pascal_object_print_value_fields (struct type *type, const gdb_byte *valaddr, |
fba45db2 KB |
636 | CORE_ADDR address, struct ui_file *stream, |
637 | int format, int recurse, | |
638 | enum val_prettyprint pretty, | |
639 | struct type **dont_print_vb, | |
640 | int dont_print_statmem) | |
373a8247 PM |
641 | { |
642 | int i, len, n_baseclasses; | |
373a8247 PM |
643 | char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack); |
644 | ||
645 | CHECK_TYPEDEF (type); | |
646 | ||
647 | fprintf_filtered (stream, "{"); | |
648 | len = TYPE_NFIELDS (type); | |
649 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
650 | ||
651 | /* Print out baseclasses such that we don't print | |
652 | duplicates of virtual baseclasses. */ | |
653 | if (n_baseclasses > 0) | |
654 | pascal_object_print_value (type, valaddr, address, stream, | |
655 | format, recurse + 1, pretty, dont_print_vb); | |
656 | ||
657 | if (!len && n_baseclasses == 1) | |
658 | fprintf_filtered (stream, "<No data fields>"); | |
659 | else | |
660 | { | |
c1b6e682 | 661 | struct obstack tmp_obstack = dont_print_statmem_obstack; |
373a8247 PM |
662 | int fields_seen = 0; |
663 | ||
664 | if (dont_print_statmem == 0) | |
665 | { | |
666 | /* If we're at top level, carve out a completely fresh | |
667 | chunk of the obstack and use that until this particular | |
668 | invocation returns. */ | |
373a8247 PM |
669 | obstack_finish (&dont_print_statmem_obstack); |
670 | } | |
671 | ||
672 | for (i = n_baseclasses; i < len; i++) | |
673 | { | |
674 | /* If requested, skip printing of static fields. */ | |
675 | if (!pascal_static_field_print && TYPE_FIELD_STATIC (type, i)) | |
676 | continue; | |
677 | if (fields_seen) | |
678 | fprintf_filtered (stream, ", "); | |
679 | else if (n_baseclasses > 0) | |
680 | { | |
681 | if (pretty) | |
682 | { | |
683 | fprintf_filtered (stream, "\n"); | |
684 | print_spaces_filtered (2 + 2 * recurse, stream); | |
685 | fputs_filtered ("members of ", stream); | |
686 | fputs_filtered (type_name_no_tag (type), stream); | |
687 | fputs_filtered (": ", stream); | |
688 | } | |
689 | } | |
690 | fields_seen = 1; | |
691 | ||
692 | if (pretty) | |
693 | { | |
694 | fprintf_filtered (stream, "\n"); | |
695 | print_spaces_filtered (2 + 2 * recurse, stream); | |
696 | } | |
697 | else | |
698 | { | |
699 | wrap_here (n_spaces (2 + 2 * recurse)); | |
700 | } | |
701 | if (inspect_it) | |
702 | { | |
703 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR) | |
704 | fputs_filtered ("\"( ptr \"", stream); | |
705 | else | |
706 | fputs_filtered ("\"( nodef \"", stream); | |
707 | if (TYPE_FIELD_STATIC (type, i)) | |
708 | fputs_filtered ("static ", stream); | |
709 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
710 | language_cplus, | |
711 | DMGL_PARAMS | DMGL_ANSI); | |
712 | fputs_filtered ("\" \"", stream); | |
713 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
714 | language_cplus, | |
715 | DMGL_PARAMS | DMGL_ANSI); | |
716 | fputs_filtered ("\") \"", stream); | |
717 | } | |
718 | else | |
719 | { | |
720 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
721 | ||
722 | if (TYPE_FIELD_STATIC (type, i)) | |
723 | fputs_filtered ("static ", stream); | |
724 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
725 | language_cplus, | |
726 | DMGL_PARAMS | DMGL_ANSI); | |
727 | annotate_field_name_end (); | |
728 | fputs_filtered (" = ", stream); | |
729 | annotate_field_value (); | |
730 | } | |
731 | ||
732 | if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i)) | |
733 | { | |
6943961c | 734 | struct value *v; |
373a8247 PM |
735 | |
736 | /* Bitfields require special handling, especially due to byte | |
737 | order problems. */ | |
738 | if (TYPE_FIELD_IGNORE (type, i)) | |
739 | { | |
740 | fputs_filtered ("<optimized out or zero length>", stream); | |
741 | } | |
742 | else | |
743 | { | |
744 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), | |
745 | unpack_field_as_long (type, valaddr, i)); | |
746 | ||
806048c6 | 747 | common_val_print (v, stream, format, 0, recurse + 1, pretty); |
373a8247 PM |
748 | } |
749 | } | |
750 | else | |
751 | { | |
752 | if (TYPE_FIELD_IGNORE (type, i)) | |
753 | { | |
754 | fputs_filtered ("<optimized out or zero length>", stream); | |
755 | } | |
756 | else if (TYPE_FIELD_STATIC (type, i)) | |
757 | { | |
6943961c AC |
758 | /* struct value *v = value_static_field (type, i); v4.17 specific */ |
759 | struct value *v; | |
373a8247 PM |
760 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), |
761 | unpack_field_as_long (type, valaddr, i)); | |
762 | ||
763 | if (v == NULL) | |
764 | fputs_filtered ("<optimized out>", stream); | |
765 | else | |
806048c6 DJ |
766 | pascal_object_print_static_field (v, stream, format, |
767 | recurse + 1, pretty); | |
373a8247 PM |
768 | } |
769 | else | |
770 | { | |
771 | /* val_print (TYPE_FIELD_TYPE (type, i), | |
772 | valaddr + TYPE_FIELD_BITPOS (type, i) / 8, | |
773 | address + TYPE_FIELD_BITPOS (type, i) / 8, 0, | |
774 | stream, format, 0, recurse + 1, pretty); */ | |
775 | val_print (TYPE_FIELD_TYPE (type, i), | |
776 | valaddr, TYPE_FIELD_BITPOS (type, i) / 8, | |
777 | address + TYPE_FIELD_BITPOS (type, i) / 8, | |
778 | stream, format, 0, recurse + 1, pretty); | |
779 | } | |
780 | } | |
781 | annotate_field_end (); | |
782 | } | |
783 | ||
784 | if (dont_print_statmem == 0) | |
785 | { | |
786 | /* Free the space used to deal with the printing | |
787 | of the members from top level. */ | |
788 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
789 | dont_print_statmem_obstack = tmp_obstack; | |
790 | } | |
791 | ||
792 | if (pretty) | |
793 | { | |
794 | fprintf_filtered (stream, "\n"); | |
795 | print_spaces_filtered (2 * recurse, stream); | |
796 | } | |
797 | } | |
798 | fprintf_filtered (stream, "}"); | |
799 | } | |
800 | ||
801 | /* Special val_print routine to avoid printing multiple copies of virtual | |
802 | baseclasses. */ | |
803 | ||
7080f20f | 804 | static void |
fc1a4b47 | 805 | pascal_object_print_value (struct type *type, const gdb_byte *valaddr, |
a2bd3dcd AC |
806 | CORE_ADDR address, struct ui_file *stream, |
807 | int format, int recurse, | |
fba45db2 KB |
808 | enum val_prettyprint pretty, |
809 | struct type **dont_print_vb) | |
373a8247 | 810 | { |
373a8247 PM |
811 | struct type **last_dont_print |
812 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); | |
c1b6e682 | 813 | struct obstack tmp_obstack = dont_print_vb_obstack; |
373a8247 PM |
814 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); |
815 | ||
816 | if (dont_print_vb == 0) | |
817 | { | |
818 | /* If we're at top level, carve out a completely fresh | |
819 | chunk of the obstack and use that until this particular | |
820 | invocation returns. */ | |
373a8247 PM |
821 | /* Bump up the high-water mark. Now alpha is omega. */ |
822 | obstack_finish (&dont_print_vb_obstack); | |
823 | } | |
824 | ||
825 | for (i = 0; i < n_baseclasses; i++) | |
826 | { | |
827 | int boffset; | |
828 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); | |
4a52dc15 | 829 | char *basename = type_name_no_tag (baseclass); |
fc1a4b47 | 830 | const gdb_byte *base_valaddr; |
373a8247 PM |
831 | |
832 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
833 | { | |
834 | struct type **first_dont_print | |
835 | = (struct type **) obstack_base (&dont_print_vb_obstack); | |
836 | ||
837 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) | |
838 | - first_dont_print; | |
839 | ||
840 | while (--j >= 0) | |
841 | if (baseclass == first_dont_print[j]) | |
842 | goto flush_it; | |
843 | ||
844 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
845 | } | |
846 | ||
847 | boffset = baseclass_offset (type, i, valaddr, address); | |
848 | ||
849 | if (pretty) | |
850 | { | |
851 | fprintf_filtered (stream, "\n"); | |
852 | print_spaces_filtered (2 * recurse, stream); | |
853 | } | |
854 | fputs_filtered ("<", stream); | |
855 | /* Not sure what the best notation is in the case where there is no | |
856 | baseclass name. */ | |
857 | ||
858 | fputs_filtered (basename ? basename : "", stream); | |
859 | fputs_filtered ("> = ", stream); | |
860 | ||
861 | /* The virtual base class pointer might have been clobbered by the | |
862 | user program. Make sure that it still points to a valid memory | |
863 | location. */ | |
864 | ||
865 | if (boffset != -1 && (boffset < 0 || boffset >= TYPE_LENGTH (type))) | |
866 | { | |
34c0bd93 | 867 | /* FIXME (alloc): not safe is baseclass is really really big. */ |
fc1a4b47 | 868 | gdb_byte *buf = alloca (TYPE_LENGTH (baseclass)); |
a2bd3dcd AC |
869 | base_valaddr = buf; |
870 | if (target_read_memory (address + boffset, buf, | |
373a8247 PM |
871 | TYPE_LENGTH (baseclass)) != 0) |
872 | boffset = -1; | |
873 | } | |
874 | else | |
875 | base_valaddr = valaddr + boffset; | |
876 | ||
877 | if (boffset == -1) | |
878 | fprintf_filtered (stream, "<invalid address>"); | |
879 | else | |
880 | pascal_object_print_value_fields (baseclass, base_valaddr, address + boffset, | |
881 | stream, format, recurse, pretty, | |
882 | (struct type **) obstack_base (&dont_print_vb_obstack), | |
883 | 0); | |
884 | fputs_filtered (", ", stream); | |
885 | ||
886 | flush_it: | |
887 | ; | |
888 | } | |
889 | ||
890 | if (dont_print_vb == 0) | |
891 | { | |
892 | /* Free the space used to deal with the printing | |
893 | of this type from top level. */ | |
894 | obstack_free (&dont_print_vb_obstack, last_dont_print); | |
895 | /* Reset watermark so that we can continue protecting | |
896 | ourselves from whatever we were protecting ourselves. */ | |
897 | dont_print_vb_obstack = tmp_obstack; | |
898 | } | |
899 | } | |
900 | ||
901 | /* Print value of a static member. | |
902 | To avoid infinite recursion when printing a class that contains | |
903 | a static instance of the class, we keep the addresses of all printed | |
904 | static member classes in an obstack and refuse to print them more | |
905 | than once. | |
906 | ||
806048c6 | 907 | VAL contains the value to print, STREAM, RECURSE, and PRETTY |
373a8247 PM |
908 | have the same meanings as in c_val_print. */ |
909 | ||
910 | static void | |
806048c6 | 911 | pascal_object_print_static_field (struct value *val, |
fba45db2 KB |
912 | struct ui_file *stream, int format, |
913 | int recurse, enum val_prettyprint pretty) | |
373a8247 | 914 | { |
806048c6 DJ |
915 | struct type *type = value_type (val); |
916 | ||
373a8247 PM |
917 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
918 | { | |
919 | CORE_ADDR *first_dont_print; | |
920 | int i; | |
921 | ||
922 | first_dont_print | |
923 | = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); | |
924 | i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) | |
925 | - first_dont_print; | |
926 | ||
927 | while (--i >= 0) | |
928 | { | |
929 | if (VALUE_ADDRESS (val) == first_dont_print[i]) | |
930 | { | |
931 | fputs_filtered ("<same as static member of an already seen type>", | |
932 | stream); | |
933 | return; | |
934 | } | |
935 | } | |
936 | ||
937 | obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val), | |
938 | sizeof (CORE_ADDR)); | |
939 | ||
940 | CHECK_TYPEDEF (type); | |
0fd88904 | 941 | pascal_object_print_value_fields (type, value_contents (val), VALUE_ADDRESS (val), |
373a8247 PM |
942 | stream, format, recurse, pretty, NULL, 1); |
943 | return; | |
944 | } | |
806048c6 | 945 | common_val_print (val, stream, format, 0, recurse, pretty); |
373a8247 PM |
946 | } |
947 | ||
b9362cc7 | 948 | extern initialize_file_ftype _initialize_pascal_valprint; /* -Wmissing-prototypes */ |
373a8247 PM |
949 | |
950 | void | |
fba45db2 | 951 | _initialize_pascal_valprint (void) |
373a8247 | 952 | { |
5bf193a2 AC |
953 | add_setshow_boolean_cmd ("pascal_static-members", class_support, |
954 | &pascal_static_field_print, _("\ | |
955 | Set printing of pascal static members."), _("\ | |
956 | Show printing of pascal static members."), NULL, | |
957 | NULL, | |
920d2a44 | 958 | show_pascal_static_field_print, |
5bf193a2 | 959 | &setprintlist, &showprintlist); |
373a8247 PM |
960 | /* Turn on printing of static fields. */ |
961 | pascal_static_field_print = 1; | |
962 | ||
963 | } |