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373a8247 PM |
1 | /* Support for printing Pascal values for GDB, the GNU debugger. |
2 | Copyright 2000 | |
3 | Free Software Foundation, Inc. | |
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 | |
9 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | /* This file is derived from c-valprint.c */ | |
22 | ||
23 | #include "defs.h" | |
24 | #include "obstack.h" | |
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" | |
39 | \f | |
40 | ||
41 | ||
42 | ||
43 | /* Print data of type TYPE located at VALADDR (within GDB), which came from | |
44 | the inferior at address ADDRESS, onto stdio stream STREAM according to | |
45 | FORMAT (a letter or 0 for natural format). The data at VALADDR is in | |
46 | target byte order. | |
47 | ||
48 | If the data are a string pointer, returns the number of string characters | |
49 | printed. | |
50 | ||
51 | If DEREF_REF is nonzero, then dereference references, otherwise just print | |
52 | them like pointers. | |
53 | ||
54 | The PRETTY parameter controls prettyprinting. */ | |
55 | ||
56 | ||
57 | int | |
fba45db2 KB |
58 | pascal_val_print (struct type *type, char *valaddr, int embedded_offset, |
59 | CORE_ADDR address, struct ui_file *stream, int format, | |
60 | int deref_ref, int recurse, enum val_prettyprint pretty) | |
373a8247 PM |
61 | { |
62 | register unsigned int i = 0; /* Number of characters printed */ | |
63 | unsigned len; | |
64 | struct type *elttype; | |
65 | unsigned eltlen; | |
66 | LONGEST val; | |
67 | CORE_ADDR addr; | |
68 | ||
69 | CHECK_TYPEDEF (type); | |
70 | switch (TYPE_CODE (type)) | |
71 | { | |
72 | case TYPE_CODE_ARRAY: | |
73 | if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0) | |
74 | { | |
75 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
76 | eltlen = TYPE_LENGTH (elttype); | |
77 | len = TYPE_LENGTH (type) / eltlen; | |
78 | if (prettyprint_arrays) | |
79 | { | |
80 | print_spaces_filtered (2 + 2 * recurse, stream); | |
81 | } | |
82 | /* For an array of chars, print with string syntax. */ | |
83 | if (eltlen == 1 && | |
84 | ((TYPE_CODE (elttype) == TYPE_CODE_INT) | |
85 | || ((current_language->la_language == language_m2) | |
86 | && (TYPE_CODE (elttype) == TYPE_CODE_CHAR))) | |
87 | && (format == 0 || format == 's')) | |
88 | { | |
89 | /* If requested, look for the first null char and only print | |
90 | elements up to it. */ | |
91 | if (stop_print_at_null) | |
92 | { | |
93 | unsigned int temp_len; | |
94 | ||
95 | /* Look for a NULL char. */ | |
96 | for (temp_len = 0; | |
97 | (valaddr + embedded_offset)[temp_len] | |
98 | && temp_len < len && temp_len < print_max; | |
99 | temp_len++); | |
100 | len = temp_len; | |
101 | } | |
102 | ||
103 | LA_PRINT_STRING (stream, valaddr + embedded_offset, len, 1, 0); | |
104 | i = len; | |
105 | } | |
106 | else | |
107 | { | |
108 | fprintf_filtered (stream, "{"); | |
109 | /* If this is a virtual function table, print the 0th | |
110 | entry specially, and the rest of the members normally. */ | |
111 | if (pascal_object_is_vtbl_ptr_type (elttype)) | |
112 | { | |
113 | i = 1; | |
114 | fprintf_filtered (stream, "%d vtable entries", len - 1); | |
115 | } | |
116 | else | |
117 | { | |
118 | i = 0; | |
119 | } | |
120 | val_print_array_elements (type, valaddr + embedded_offset, address, stream, | |
121 | format, deref_ref, recurse, pretty, i); | |
122 | fprintf_filtered (stream, "}"); | |
123 | } | |
124 | break; | |
125 | } | |
126 | /* Array of unspecified length: treat like pointer to first elt. */ | |
127 | addr = address; | |
128 | goto print_unpacked_pointer; | |
129 | ||
130 | case TYPE_CODE_PTR: | |
131 | if (format && format != 's') | |
132 | { | |
133 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
134 | break; | |
135 | } | |
136 | if (vtblprint && pascal_object_is_vtbl_ptr_type (type)) | |
137 | { | |
138 | /* Print the unmangled name if desired. */ | |
139 | /* Print vtable entry - we only get here if we ARE using | |
140 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */ | |
141 | print_address_demangle (extract_address (valaddr + embedded_offset, TYPE_LENGTH (type)), | |
142 | stream, demangle); | |
143 | break; | |
144 | } | |
145 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
146 | if (TYPE_CODE (elttype) == TYPE_CODE_METHOD) | |
147 | { | |
148 | pascal_object_print_class_method (valaddr + embedded_offset, type, stream); | |
149 | } | |
150 | else if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER) | |
151 | { | |
152 | pascal_object_print_class_member (valaddr + embedded_offset, | |
153 | TYPE_DOMAIN_TYPE (TYPE_TARGET_TYPE (type)), | |
154 | stream, "&"); | |
155 | } | |
156 | else | |
157 | { | |
158 | addr = unpack_pointer (type, valaddr + embedded_offset); | |
159 | print_unpacked_pointer: | |
160 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
161 | ||
162 | if (TYPE_CODE (elttype) == TYPE_CODE_FUNC) | |
163 | { | |
164 | /* Try to print what function it points to. */ | |
165 | print_address_demangle (addr, stream, demangle); | |
166 | /* Return value is irrelevant except for string pointers. */ | |
167 | return (0); | |
168 | } | |
169 | ||
170 | if (addressprint && format != 's') | |
171 | { | |
172 | print_address_numeric (addr, 1, stream); | |
173 | } | |
174 | ||
175 | /* For a pointer to char or unsigned char, also print the string | |
176 | pointed to, unless pointer is null. */ | |
177 | if (TYPE_LENGTH (elttype) == 1 | |
178 | && TYPE_CODE (elttype) == TYPE_CODE_INT | |
179 | && (format == 0 || format == 's') | |
180 | && addr != 0) | |
181 | { | |
182 | /* no wide string yet */ | |
183 | i = val_print_string (addr, -1, 1, stream); | |
184 | } | |
185 | /* also for pointers to pascal strings */ | |
186 | /* Note: this is Free Pascal specific: | |
187 | as GDB does not recognize stabs pascal strings | |
188 | Pascal strings are mapped to records | |
189 | with lowercase names PM */ | |
190 | /* I don't know what GPC does :( PM */ | |
191 | if (TYPE_CODE (elttype) == TYPE_CODE_STRUCT && | |
192 | TYPE_NFIELDS (elttype) == 2 && | |
193 | strcmp (TYPE_FIELDS (elttype)[0].name, "length") == 0 && | |
194 | strcmp (TYPE_FIELDS (elttype)[1].name, "st") == 0 && | |
195 | addr != 0) | |
196 | { | |
197 | char bytelength; | |
198 | read_memory (addr, &bytelength, 1); | |
199 | i = val_print_string (addr + 1, bytelength, 1, stream); | |
200 | } | |
201 | else if (pascal_object_is_vtbl_member (type)) | |
202 | { | |
203 | /* print vtbl's nicely */ | |
204 | CORE_ADDR vt_address = unpack_pointer (type, valaddr + embedded_offset); | |
205 | ||
206 | struct minimal_symbol *msymbol = | |
207 | lookup_minimal_symbol_by_pc (vt_address); | |
208 | if ((msymbol != NULL) && | |
209 | (vt_address == SYMBOL_VALUE_ADDRESS (msymbol))) | |
210 | { | |
211 | fputs_filtered (" <", stream); | |
212 | fputs_filtered (SYMBOL_SOURCE_NAME (msymbol), stream); | |
213 | fputs_filtered (">", stream); | |
214 | } | |
215 | if (vt_address && vtblprint) | |
216 | { | |
217 | value_ptr vt_val; | |
218 | struct symbol *wsym = (struct symbol *) NULL; | |
219 | struct type *wtype; | |
220 | struct symtab *s; | |
221 | struct block *block = (struct block *) NULL; | |
222 | int is_this_fld; | |
223 | ||
224 | if (msymbol != NULL) | |
225 | wsym = lookup_symbol (SYMBOL_NAME (msymbol), block, | |
226 | VAR_NAMESPACE, &is_this_fld, &s); | |
227 | ||
228 | if (wsym) | |
229 | { | |
230 | wtype = SYMBOL_TYPE (wsym); | |
231 | } | |
232 | else | |
233 | { | |
234 | wtype = TYPE_TARGET_TYPE (type); | |
235 | } | |
236 | vt_val = value_at (wtype, vt_address, NULL); | |
237 | val_print (VALUE_TYPE (vt_val), VALUE_CONTENTS (vt_val), 0, | |
238 | VALUE_ADDRESS (vt_val), stream, format, | |
239 | deref_ref, recurse + 1, pretty); | |
240 | if (pretty) | |
241 | { | |
242 | fprintf_filtered (stream, "\n"); | |
243 | print_spaces_filtered (2 + 2 * recurse, stream); | |
244 | } | |
245 | } | |
246 | } | |
247 | ||
248 | /* Return number of characters printed, including the terminating | |
249 | '\0' if we reached the end. val_print_string takes care including | |
250 | the terminating '\0' if necessary. */ | |
251 | return i; | |
252 | } | |
253 | break; | |
254 | ||
255 | case TYPE_CODE_MEMBER: | |
256 | error ("not implemented: member type in pascal_val_print"); | |
257 | break; | |
258 | ||
259 | case TYPE_CODE_REF: | |
260 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
261 | if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER) | |
262 | { | |
263 | pascal_object_print_class_member (valaddr + embedded_offset, | |
264 | TYPE_DOMAIN_TYPE (elttype), | |
265 | stream, ""); | |
266 | break; | |
267 | } | |
268 | if (addressprint) | |
269 | { | |
270 | fprintf_filtered (stream, "@"); | |
271 | print_address_numeric | |
272 | (extract_address (valaddr + embedded_offset, | |
273 | TARGET_PTR_BIT / HOST_CHAR_BIT), 1, stream); | |
274 | if (deref_ref) | |
275 | fputs_filtered (": ", stream); | |
276 | } | |
277 | /* De-reference the reference. */ | |
278 | if (deref_ref) | |
279 | { | |
280 | if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF) | |
281 | { | |
282 | value_ptr deref_val = | |
283 | value_at | |
284 | (TYPE_TARGET_TYPE (type), | |
285 | unpack_pointer (lookup_pointer_type (builtin_type_void), | |
286 | valaddr + embedded_offset), | |
287 | NULL); | |
288 | val_print (VALUE_TYPE (deref_val), | |
289 | VALUE_CONTENTS (deref_val), 0, | |
290 | VALUE_ADDRESS (deref_val), stream, format, | |
291 | deref_ref, recurse + 1, pretty); | |
292 | } | |
293 | else | |
294 | fputs_filtered ("???", stream); | |
295 | } | |
296 | break; | |
297 | ||
298 | case TYPE_CODE_UNION: | |
299 | if (recurse && !unionprint) | |
300 | { | |
301 | fprintf_filtered (stream, "{...}"); | |
302 | break; | |
303 | } | |
304 | /* Fall through. */ | |
305 | case TYPE_CODE_STRUCT: | |
306 | if (vtblprint && pascal_object_is_vtbl_ptr_type (type)) | |
307 | { | |
308 | /* Print the unmangled name if desired. */ | |
309 | /* Print vtable entry - we only get here if NOT using | |
310 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */ | |
311 | print_address_demangle (extract_address ( | |
312 | valaddr + embedded_offset + TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8, | |
313 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET))), | |
314 | stream, demangle); | |
315 | } | |
316 | else | |
317 | { | |
318 | if ((TYPE_NFIELDS (type) == 2) && | |
319 | (strcmp (TYPE_FIELDS (type)[0].name, "length") == 0) && | |
320 | (strcmp (TYPE_FIELDS (type)[1].name, "st") == 0)) | |
321 | { | |
322 | len = (*(valaddr + embedded_offset)) & 0xff; | |
323 | LA_PRINT_STRING (stream, valaddr + embedded_offset + 1, len, /* width ?? */ 0, 0); | |
324 | } | |
325 | else | |
326 | pascal_object_print_value_fields (type, valaddr + embedded_offset, address, stream, format, | |
327 | recurse, pretty, NULL, 0); | |
328 | } | |
329 | break; | |
330 | ||
331 | case TYPE_CODE_ENUM: | |
332 | if (format) | |
333 | { | |
334 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
335 | break; | |
336 | } | |
337 | len = TYPE_NFIELDS (type); | |
338 | val = unpack_long (type, valaddr + embedded_offset); | |
339 | for (i = 0; i < len; i++) | |
340 | { | |
341 | QUIT; | |
342 | if (val == TYPE_FIELD_BITPOS (type, i)) | |
343 | { | |
344 | break; | |
345 | } | |
346 | } | |
347 | if (i < len) | |
348 | { | |
349 | fputs_filtered (TYPE_FIELD_NAME (type, i), stream); | |
350 | } | |
351 | else | |
352 | { | |
353 | print_longest (stream, 'd', 0, val); | |
354 | } | |
355 | break; | |
356 | ||
357 | case TYPE_CODE_FUNC: | |
358 | if (format) | |
359 | { | |
360 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
361 | break; | |
362 | } | |
363 | /* FIXME, we should consider, at least for ANSI C language, eliminating | |
364 | the distinction made between FUNCs and POINTERs to FUNCs. */ | |
365 | fprintf_filtered (stream, "{"); | |
366 | type_print (type, "", stream, -1); | |
367 | fprintf_filtered (stream, "} "); | |
368 | /* Try to print what function it points to, and its address. */ | |
369 | print_address_demangle (address, stream, demangle); | |
370 | break; | |
371 | ||
372 | case TYPE_CODE_BOOL: | |
373 | format = format ? format : output_format; | |
374 | if (format) | |
375 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
376 | else | |
377 | { | |
378 | val = unpack_long (type, valaddr + embedded_offset); | |
379 | if (val == 0) | |
380 | fputs_filtered ("false", stream); | |
381 | else if (val == 1) | |
382 | fputs_filtered ("true", stream); | |
383 | else | |
384 | { | |
385 | fputs_filtered ("true (", stream); | |
386 | fprintf_filtered (stream, "%ld)", (long int) val); | |
387 | } | |
388 | } | |
389 | break; | |
390 | ||
391 | case TYPE_CODE_RANGE: | |
392 | /* FIXME: create_range_type does not set the unsigned bit in a | |
393 | range type (I think it probably should copy it from the target | |
394 | type), so we won't print values which are too large to | |
395 | fit in a signed integer correctly. */ | |
396 | /* FIXME: Doesn't handle ranges of enums correctly. (Can't just | |
397 | print with the target type, though, because the size of our type | |
398 | and the target type might differ). */ | |
399 | /* FALLTHROUGH */ | |
400 | ||
401 | case TYPE_CODE_INT: | |
402 | format = format ? format : output_format; | |
403 | if (format) | |
404 | { | |
405 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
406 | } | |
407 | else | |
408 | { | |
409 | val_print_type_code_int (type, valaddr + embedded_offset, stream); | |
410 | } | |
411 | break; | |
412 | ||
413 | case TYPE_CODE_CHAR: | |
414 | format = format ? format : output_format; | |
415 | if (format) | |
416 | { | |
417 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
418 | } | |
419 | else | |
420 | { | |
421 | val = unpack_long (type, valaddr + embedded_offset); | |
422 | if (TYPE_UNSIGNED (type)) | |
423 | fprintf_filtered (stream, "%u", (unsigned int) val); | |
424 | else | |
425 | fprintf_filtered (stream, "%d", (int) val); | |
426 | fputs_filtered (" ", stream); | |
427 | LA_PRINT_CHAR ((unsigned char) val, stream); | |
428 | } | |
429 | break; | |
430 | ||
431 | case TYPE_CODE_FLT: | |
432 | if (format) | |
433 | { | |
434 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
435 | } | |
436 | else | |
437 | { | |
438 | print_floating (valaddr + embedded_offset, type, stream); | |
439 | } | |
440 | break; | |
441 | ||
442 | case TYPE_CODE_BITSTRING: | |
443 | case TYPE_CODE_SET: | |
444 | elttype = TYPE_INDEX_TYPE (type); | |
445 | CHECK_TYPEDEF (elttype); | |
446 | if (TYPE_FLAGS (elttype) & TYPE_FLAG_STUB) | |
447 | { | |
448 | fprintf_filtered (stream, "<incomplete type>"); | |
449 | gdb_flush (stream); | |
450 | break; | |
451 | } | |
452 | else | |
453 | { | |
454 | struct type *range = elttype; | |
455 | LONGEST low_bound, high_bound; | |
456 | int i; | |
457 | int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING; | |
458 | int need_comma = 0; | |
459 | ||
460 | if (is_bitstring) | |
461 | fputs_filtered ("B'", stream); | |
462 | else | |
463 | fputs_filtered ("[", stream); | |
464 | ||
465 | i = get_discrete_bounds (range, &low_bound, &high_bound); | |
466 | maybe_bad_bstring: | |
467 | if (i < 0) | |
468 | { | |
469 | fputs_filtered ("<error value>", stream); | |
470 | goto done; | |
471 | } | |
472 | ||
473 | for (i = low_bound; i <= high_bound; i++) | |
474 | { | |
475 | int element = value_bit_index (type, valaddr + embedded_offset, i); | |
476 | if (element < 0) | |
477 | { | |
478 | i = element; | |
479 | goto maybe_bad_bstring; | |
480 | } | |
481 | if (is_bitstring) | |
482 | fprintf_filtered (stream, "%d", element); | |
483 | else if (element) | |
484 | { | |
485 | if (need_comma) | |
486 | fputs_filtered (", ", stream); | |
487 | print_type_scalar (range, i, stream); | |
488 | need_comma = 1; | |
489 | ||
490 | if (i + 1 <= high_bound && value_bit_index (type, valaddr + embedded_offset, ++i)) | |
491 | { | |
492 | int j = i; | |
493 | fputs_filtered ("..", stream); | |
494 | while (i + 1 <= high_bound | |
495 | && value_bit_index (type, valaddr + embedded_offset, ++i)) | |
496 | j = i; | |
497 | print_type_scalar (range, j, stream); | |
498 | } | |
499 | } | |
500 | } | |
501 | done: | |
502 | if (is_bitstring) | |
503 | fputs_filtered ("'", stream); | |
504 | else | |
505 | fputs_filtered ("]", stream); | |
506 | } | |
507 | break; | |
508 | ||
509 | case TYPE_CODE_VOID: | |
510 | fprintf_filtered (stream, "void"); | |
511 | break; | |
512 | ||
513 | case TYPE_CODE_ERROR: | |
514 | fprintf_filtered (stream, "<error type>"); | |
515 | break; | |
516 | ||
517 | case TYPE_CODE_UNDEF: | |
518 | /* This happens (without TYPE_FLAG_STUB set) on systems which don't use | |
519 | dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar" | |
520 | and no complete type for struct foo in that file. */ | |
521 | fprintf_filtered (stream, "<incomplete type>"); | |
522 | break; | |
523 | ||
524 | default: | |
525 | error ("Invalid pascal type code %d in symbol table.", TYPE_CODE (type)); | |
526 | } | |
527 | gdb_flush (stream); | |
528 | return (0); | |
529 | } | |
530 | \f | |
531 | int | |
fba45db2 KB |
532 | pascal_value_print (value_ptr val, struct ui_file *stream, int format, |
533 | enum val_prettyprint pretty) | |
373a8247 PM |
534 | { |
535 | struct type *type = VALUE_TYPE (val); | |
536 | ||
537 | /* If it is a pointer, indicate what it points to. | |
538 | ||
539 | Print type also if it is a reference. | |
540 | ||
541 | Object pascal: if it is a member pointer, we will take care | |
542 | of that when we print it. */ | |
543 | if (TYPE_CODE (type) == TYPE_CODE_PTR || | |
544 | TYPE_CODE (type) == TYPE_CODE_REF) | |
545 | { | |
546 | /* Hack: remove (char *) for char strings. Their | |
547 | type is indicated by the quoted string anyway. */ | |
548 | if (TYPE_CODE (type) == TYPE_CODE_PTR && | |
549 | TYPE_NAME (type) == NULL && | |
550 | TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL && | |
551 | STREQ (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char")) | |
552 | { | |
553 | /* Print nothing */ | |
554 | } | |
555 | else | |
556 | { | |
557 | fprintf_filtered (stream, "("); | |
558 | type_print (type, "", stream, -1); | |
559 | fprintf_filtered (stream, ") "); | |
560 | } | |
561 | } | |
562 | return val_print (type, VALUE_CONTENTS (val), VALUE_EMBEDDED_OFFSET (val), | |
563 | VALUE_ADDRESS (val) + VALUE_OFFSET (val), | |
564 | stream, format, 1, 0, pretty); | |
565 | } | |
566 | ||
567 | ||
568 | /****************************************************************************** | |
569 | Inserted from cp-valprint | |
570 | ******************************************************************************/ | |
571 | ||
572 | extern int vtblprint; /* Controls printing of vtbl's */ | |
573 | extern int objectprint; /* Controls looking up an object's derived type | |
574 | using what we find in its vtables. */ | |
575 | static int pascal_static_field_print; /* Controls printing of static fields. */ | |
576 | ||
577 | static struct obstack dont_print_vb_obstack; | |
578 | static struct obstack dont_print_statmem_obstack; | |
579 | ||
580 | static void | |
581 | pascal_object_print_static_field (struct type *, value_ptr, struct ui_file *, int, int, | |
582 | enum val_prettyprint); | |
583 | ||
584 | static void | |
585 | pascal_object_print_value (struct type *, char *, CORE_ADDR, struct ui_file *, | |
586 | int, int, enum val_prettyprint, struct type **); | |
587 | ||
588 | void | |
fba45db2 KB |
589 | pascal_object_print_class_method (char *valaddr, struct type *type, |
590 | struct ui_file *stream) | |
373a8247 PM |
591 | { |
592 | struct type *domain; | |
593 | struct fn_field *f = NULL; | |
594 | int j = 0; | |
595 | int len2; | |
596 | int offset; | |
597 | char *kind = ""; | |
598 | CORE_ADDR addr; | |
599 | struct symbol *sym; | |
600 | unsigned len; | |
601 | unsigned int i; | |
602 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); | |
603 | ||
604 | domain = TYPE_DOMAIN_TYPE (target_type); | |
605 | if (domain == (struct type *) NULL) | |
606 | { | |
607 | fprintf_filtered (stream, "<unknown>"); | |
608 | return; | |
609 | } | |
610 | addr = unpack_pointer (lookup_pointer_type (builtin_type_void), valaddr); | |
611 | if (METHOD_PTR_IS_VIRTUAL (addr)) | |
612 | { | |
613 | offset = METHOD_PTR_TO_VOFFSET (addr); | |
614 | len = TYPE_NFN_FIELDS (domain); | |
615 | for (i = 0; i < len; i++) | |
616 | { | |
617 | f = TYPE_FN_FIELDLIST1 (domain, i); | |
618 | len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); | |
619 | ||
620 | for (j = 0; j < len2; j++) | |
621 | { | |
622 | QUIT; | |
623 | if (TYPE_FN_FIELD_VOFFSET (f, j) == offset) | |
624 | { | |
625 | if (TYPE_FN_FIELD_STUB (f, j)) | |
626 | check_stub_method (domain, i, j); | |
627 | kind = "virtual "; | |
628 | goto common; | |
629 | } | |
630 | } | |
631 | } | |
632 | } | |
633 | else | |
634 | { | |
635 | sym = find_pc_function (addr); | |
636 | if (sym == 0) | |
637 | { | |
638 | error ("invalid pointer to member function"); | |
639 | } | |
640 | len = TYPE_NFN_FIELDS (domain); | |
641 | for (i = 0; i < len; i++) | |
642 | { | |
643 | f = TYPE_FN_FIELDLIST1 (domain, i); | |
644 | len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); | |
645 | ||
646 | for (j = 0; j < len2; j++) | |
647 | { | |
648 | QUIT; | |
649 | if (TYPE_FN_FIELD_STUB (f, j)) | |
650 | check_stub_method (domain, i, j); | |
651 | if (STREQ (SYMBOL_NAME (sym), TYPE_FN_FIELD_PHYSNAME (f, j))) | |
652 | { | |
653 | goto common; | |
654 | } | |
655 | } | |
656 | } | |
657 | } | |
658 | common: | |
659 | if (i < len) | |
660 | { | |
661 | char *demangled_name; | |
662 | ||
663 | fprintf_filtered (stream, "&"); | |
664 | fprintf_filtered (stream, kind); | |
665 | demangled_name = cplus_demangle (TYPE_FN_FIELD_PHYSNAME (f, j), | |
666 | DMGL_ANSI | DMGL_PARAMS); | |
667 | if (demangled_name == NULL) | |
668 | fprintf_filtered (stream, "<badly mangled name %s>", | |
669 | TYPE_FN_FIELD_PHYSNAME (f, j)); | |
670 | else | |
671 | { | |
672 | fputs_filtered (demangled_name, stream); | |
b8c9b27d | 673 | xfree (demangled_name); |
373a8247 PM |
674 | } |
675 | } | |
676 | else | |
677 | { | |
678 | fprintf_filtered (stream, "("); | |
679 | type_print (type, "", stream, -1); | |
680 | fprintf_filtered (stream, ") %d", (int) addr >> 3); | |
681 | } | |
682 | } | |
683 | ||
684 | /* It was changed to this after 2.4.5. */ | |
685 | const char pascal_vtbl_ptr_name[] = | |
686 | {'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; | |
687 | ||
688 | /* Return truth value for assertion that TYPE is of the type | |
689 | "pointer to virtual function". */ | |
690 | ||
691 | int | |
fba45db2 | 692 | pascal_object_is_vtbl_ptr_type (struct type *type) |
373a8247 PM |
693 | { |
694 | char *typename = type_name_no_tag (type); | |
695 | ||
696 | return (typename != NULL | |
697 | && (STREQ (typename, pascal_vtbl_ptr_name))); | |
698 | } | |
699 | ||
700 | /* Return truth value for the assertion that TYPE is of the type | |
701 | "pointer to virtual function table". */ | |
702 | ||
703 | int | |
fba45db2 | 704 | pascal_object_is_vtbl_member (struct type *type) |
373a8247 PM |
705 | { |
706 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
707 | { | |
708 | type = TYPE_TARGET_TYPE (type); | |
709 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
710 | { | |
711 | type = TYPE_TARGET_TYPE (type); | |
712 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */ | |
713 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */ | |
714 | { | |
715 | /* Virtual functions tables are full of pointers | |
716 | to virtual functions. */ | |
717 | return pascal_object_is_vtbl_ptr_type (type); | |
718 | } | |
719 | } | |
720 | } | |
721 | return 0; | |
722 | } | |
723 | ||
724 | /* Mutually recursive subroutines of pascal_object_print_value and c_val_print to | |
725 | print out a structure's fields: pascal_object_print_value_fields and pascal_object_print_value. | |
726 | ||
727 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the | |
728 | same meanings as in pascal_object_print_value and c_val_print. | |
729 | ||
730 | DONT_PRINT is an array of baseclass types that we | |
731 | should not print, or zero if called from top level. */ | |
732 | ||
733 | void | |
fba45db2 KB |
734 | pascal_object_print_value_fields (struct type *type, char *valaddr, |
735 | CORE_ADDR address, struct ui_file *stream, | |
736 | int format, int recurse, | |
737 | enum val_prettyprint pretty, | |
738 | struct type **dont_print_vb, | |
739 | int dont_print_statmem) | |
373a8247 PM |
740 | { |
741 | int i, len, n_baseclasses; | |
742 | struct obstack tmp_obstack; | |
743 | char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack); | |
744 | ||
745 | CHECK_TYPEDEF (type); | |
746 | ||
747 | fprintf_filtered (stream, "{"); | |
748 | len = TYPE_NFIELDS (type); | |
749 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
750 | ||
751 | /* Print out baseclasses such that we don't print | |
752 | duplicates of virtual baseclasses. */ | |
753 | if (n_baseclasses > 0) | |
754 | pascal_object_print_value (type, valaddr, address, stream, | |
755 | format, recurse + 1, pretty, dont_print_vb); | |
756 | ||
757 | if (!len && n_baseclasses == 1) | |
758 | fprintf_filtered (stream, "<No data fields>"); | |
759 | else | |
760 | { | |
761 | extern int inspect_it; | |
762 | int fields_seen = 0; | |
763 | ||
764 | if (dont_print_statmem == 0) | |
765 | { | |
766 | /* If we're at top level, carve out a completely fresh | |
767 | chunk of the obstack and use that until this particular | |
768 | invocation returns. */ | |
769 | tmp_obstack = dont_print_statmem_obstack; | |
770 | obstack_finish (&dont_print_statmem_obstack); | |
771 | } | |
772 | ||
773 | for (i = n_baseclasses; i < len; i++) | |
774 | { | |
775 | /* If requested, skip printing of static fields. */ | |
776 | if (!pascal_static_field_print && TYPE_FIELD_STATIC (type, i)) | |
777 | continue; | |
778 | if (fields_seen) | |
779 | fprintf_filtered (stream, ", "); | |
780 | else if (n_baseclasses > 0) | |
781 | { | |
782 | if (pretty) | |
783 | { | |
784 | fprintf_filtered (stream, "\n"); | |
785 | print_spaces_filtered (2 + 2 * recurse, stream); | |
786 | fputs_filtered ("members of ", stream); | |
787 | fputs_filtered (type_name_no_tag (type), stream); | |
788 | fputs_filtered (": ", stream); | |
789 | } | |
790 | } | |
791 | fields_seen = 1; | |
792 | ||
793 | if (pretty) | |
794 | { | |
795 | fprintf_filtered (stream, "\n"); | |
796 | print_spaces_filtered (2 + 2 * recurse, stream); | |
797 | } | |
798 | else | |
799 | { | |
800 | wrap_here (n_spaces (2 + 2 * recurse)); | |
801 | } | |
802 | if (inspect_it) | |
803 | { | |
804 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR) | |
805 | fputs_filtered ("\"( ptr \"", stream); | |
806 | else | |
807 | fputs_filtered ("\"( nodef \"", stream); | |
808 | if (TYPE_FIELD_STATIC (type, i)) | |
809 | fputs_filtered ("static ", stream); | |
810 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
811 | language_cplus, | |
812 | DMGL_PARAMS | DMGL_ANSI); | |
813 | fputs_filtered ("\" \"", stream); | |
814 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
815 | language_cplus, | |
816 | DMGL_PARAMS | DMGL_ANSI); | |
817 | fputs_filtered ("\") \"", stream); | |
818 | } | |
819 | else | |
820 | { | |
821 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
822 | ||
823 | if (TYPE_FIELD_STATIC (type, i)) | |
824 | fputs_filtered ("static ", stream); | |
825 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
826 | language_cplus, | |
827 | DMGL_PARAMS | DMGL_ANSI); | |
828 | annotate_field_name_end (); | |
829 | fputs_filtered (" = ", stream); | |
830 | annotate_field_value (); | |
831 | } | |
832 | ||
833 | if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i)) | |
834 | { | |
835 | value_ptr v; | |
836 | ||
837 | /* Bitfields require special handling, especially due to byte | |
838 | order problems. */ | |
839 | if (TYPE_FIELD_IGNORE (type, i)) | |
840 | { | |
841 | fputs_filtered ("<optimized out or zero length>", stream); | |
842 | } | |
843 | else | |
844 | { | |
845 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), | |
846 | unpack_field_as_long (type, valaddr, i)); | |
847 | ||
848 | val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), 0, 0, | |
849 | stream, format, 0, recurse + 1, pretty); | |
850 | } | |
851 | } | |
852 | else | |
853 | { | |
854 | if (TYPE_FIELD_IGNORE (type, i)) | |
855 | { | |
856 | fputs_filtered ("<optimized out or zero length>", stream); | |
857 | } | |
858 | else if (TYPE_FIELD_STATIC (type, i)) | |
859 | { | |
860 | /* value_ptr v = value_static_field (type, i); v4.17 specific */ | |
861 | value_ptr v; | |
862 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), | |
863 | unpack_field_as_long (type, valaddr, i)); | |
864 | ||
865 | if (v == NULL) | |
866 | fputs_filtered ("<optimized out>", stream); | |
867 | else | |
868 | pascal_object_print_static_field (TYPE_FIELD_TYPE (type, i), v, | |
869 | stream, format, recurse + 1, | |
870 | pretty); | |
871 | } | |
872 | else | |
873 | { | |
874 | /* val_print (TYPE_FIELD_TYPE (type, i), | |
875 | valaddr + TYPE_FIELD_BITPOS (type, i) / 8, | |
876 | address + TYPE_FIELD_BITPOS (type, i) / 8, 0, | |
877 | stream, format, 0, recurse + 1, pretty); */ | |
878 | val_print (TYPE_FIELD_TYPE (type, i), | |
879 | valaddr, TYPE_FIELD_BITPOS (type, i) / 8, | |
880 | address + TYPE_FIELD_BITPOS (type, i) / 8, | |
881 | stream, format, 0, recurse + 1, pretty); | |
882 | } | |
883 | } | |
884 | annotate_field_end (); | |
885 | } | |
886 | ||
887 | if (dont_print_statmem == 0) | |
888 | { | |
889 | /* Free the space used to deal with the printing | |
890 | of the members from top level. */ | |
891 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
892 | dont_print_statmem_obstack = tmp_obstack; | |
893 | } | |
894 | ||
895 | if (pretty) | |
896 | { | |
897 | fprintf_filtered (stream, "\n"); | |
898 | print_spaces_filtered (2 * recurse, stream); | |
899 | } | |
900 | } | |
901 | fprintf_filtered (stream, "}"); | |
902 | } | |
903 | ||
904 | /* Special val_print routine to avoid printing multiple copies of virtual | |
905 | baseclasses. */ | |
906 | ||
907 | void | |
fba45db2 KB |
908 | pascal_object_print_value (struct type *type, char *valaddr, CORE_ADDR address, |
909 | struct ui_file *stream, int format, int recurse, | |
910 | enum val_prettyprint pretty, | |
911 | struct type **dont_print_vb) | |
373a8247 PM |
912 | { |
913 | struct obstack tmp_obstack; | |
914 | struct type **last_dont_print | |
915 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); | |
916 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); | |
917 | ||
918 | if (dont_print_vb == 0) | |
919 | { | |
920 | /* If we're at top level, carve out a completely fresh | |
921 | chunk of the obstack and use that until this particular | |
922 | invocation returns. */ | |
923 | tmp_obstack = dont_print_vb_obstack; | |
924 | /* Bump up the high-water mark. Now alpha is omega. */ | |
925 | obstack_finish (&dont_print_vb_obstack); | |
926 | } | |
927 | ||
928 | for (i = 0; i < n_baseclasses; i++) | |
929 | { | |
930 | int boffset; | |
931 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); | |
932 | char *basename = TYPE_NAME (baseclass); | |
933 | char *base_valaddr; | |
934 | ||
935 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
936 | { | |
937 | struct type **first_dont_print | |
938 | = (struct type **) obstack_base (&dont_print_vb_obstack); | |
939 | ||
940 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) | |
941 | - first_dont_print; | |
942 | ||
943 | while (--j >= 0) | |
944 | if (baseclass == first_dont_print[j]) | |
945 | goto flush_it; | |
946 | ||
947 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
948 | } | |
949 | ||
950 | boffset = baseclass_offset (type, i, valaddr, address); | |
951 | ||
952 | if (pretty) | |
953 | { | |
954 | fprintf_filtered (stream, "\n"); | |
955 | print_spaces_filtered (2 * recurse, stream); | |
956 | } | |
957 | fputs_filtered ("<", stream); | |
958 | /* Not sure what the best notation is in the case where there is no | |
959 | baseclass name. */ | |
960 | ||
961 | fputs_filtered (basename ? basename : "", stream); | |
962 | fputs_filtered ("> = ", stream); | |
963 | ||
964 | /* The virtual base class pointer might have been clobbered by the | |
965 | user program. Make sure that it still points to a valid memory | |
966 | location. */ | |
967 | ||
968 | if (boffset != -1 && (boffset < 0 || boffset >= TYPE_LENGTH (type))) | |
969 | { | |
970 | base_valaddr = (char *) alloca (TYPE_LENGTH (baseclass)); | |
971 | if (target_read_memory (address + boffset, base_valaddr, | |
972 | TYPE_LENGTH (baseclass)) != 0) | |
973 | boffset = -1; | |
974 | } | |
975 | else | |
976 | base_valaddr = valaddr + boffset; | |
977 | ||
978 | if (boffset == -1) | |
979 | fprintf_filtered (stream, "<invalid address>"); | |
980 | else | |
981 | pascal_object_print_value_fields (baseclass, base_valaddr, address + boffset, | |
982 | stream, format, recurse, pretty, | |
983 | (struct type **) obstack_base (&dont_print_vb_obstack), | |
984 | 0); | |
985 | fputs_filtered (", ", stream); | |
986 | ||
987 | flush_it: | |
988 | ; | |
989 | } | |
990 | ||
991 | if (dont_print_vb == 0) | |
992 | { | |
993 | /* Free the space used to deal with the printing | |
994 | of this type from top level. */ | |
995 | obstack_free (&dont_print_vb_obstack, last_dont_print); | |
996 | /* Reset watermark so that we can continue protecting | |
997 | ourselves from whatever we were protecting ourselves. */ | |
998 | dont_print_vb_obstack = tmp_obstack; | |
999 | } | |
1000 | } | |
1001 | ||
1002 | /* Print value of a static member. | |
1003 | To avoid infinite recursion when printing a class that contains | |
1004 | a static instance of the class, we keep the addresses of all printed | |
1005 | static member classes in an obstack and refuse to print them more | |
1006 | than once. | |
1007 | ||
1008 | VAL contains the value to print, TYPE, STREAM, RECURSE, and PRETTY | |
1009 | have the same meanings as in c_val_print. */ | |
1010 | ||
1011 | static void | |
fba45db2 KB |
1012 | pascal_object_print_static_field (struct type *type, value_ptr val, |
1013 | struct ui_file *stream, int format, | |
1014 | int recurse, enum val_prettyprint pretty) | |
373a8247 PM |
1015 | { |
1016 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
1017 | { | |
1018 | CORE_ADDR *first_dont_print; | |
1019 | int i; | |
1020 | ||
1021 | first_dont_print | |
1022 | = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); | |
1023 | i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) | |
1024 | - first_dont_print; | |
1025 | ||
1026 | while (--i >= 0) | |
1027 | { | |
1028 | if (VALUE_ADDRESS (val) == first_dont_print[i]) | |
1029 | { | |
1030 | fputs_filtered ("<same as static member of an already seen type>", | |
1031 | stream); | |
1032 | return; | |
1033 | } | |
1034 | } | |
1035 | ||
1036 | obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val), | |
1037 | sizeof (CORE_ADDR)); | |
1038 | ||
1039 | CHECK_TYPEDEF (type); | |
1040 | pascal_object_print_value_fields (type, VALUE_CONTENTS (val), VALUE_ADDRESS (val), | |
1041 | stream, format, recurse, pretty, NULL, 1); | |
1042 | return; | |
1043 | } | |
1044 | val_print (type, VALUE_CONTENTS (val), 0, VALUE_ADDRESS (val), | |
1045 | stream, format, 0, recurse, pretty); | |
1046 | } | |
1047 | ||
1048 | void | |
fba45db2 KB |
1049 | pascal_object_print_class_member (char *valaddr, struct type *domain, |
1050 | struct ui_file *stream, char *prefix) | |
373a8247 PM |
1051 | { |
1052 | ||
1053 | /* VAL is a byte offset into the structure type DOMAIN. | |
1054 | Find the name of the field for that offset and | |
1055 | print it. */ | |
1056 | int extra = 0; | |
1057 | int bits = 0; | |
1058 | register unsigned int i; | |
1059 | unsigned len = TYPE_NFIELDS (domain); | |
1060 | /* @@ Make VAL into bit offset */ | |
1061 | LONGEST val = unpack_long (builtin_type_int, valaddr) << 3; | |
1062 | for (i = TYPE_N_BASECLASSES (domain); i < len; i++) | |
1063 | { | |
1064 | int bitpos = TYPE_FIELD_BITPOS (domain, i); | |
1065 | QUIT; | |
1066 | if (val == bitpos) | |
1067 | break; | |
1068 | if (val < bitpos && i != 0) | |
1069 | { | |
1070 | /* Somehow pointing into a field. */ | |
1071 | i -= 1; | |
1072 | extra = (val - TYPE_FIELD_BITPOS (domain, i)); | |
1073 | if (extra & 0x7) | |
1074 | bits = 1; | |
1075 | else | |
1076 | extra >>= 3; | |
1077 | break; | |
1078 | } | |
1079 | } | |
1080 | if (i < len) | |
1081 | { | |
1082 | char *name; | |
1083 | fprintf_filtered (stream, prefix); | |
1084 | name = type_name_no_tag (domain); | |
1085 | if (name) | |
1086 | fputs_filtered (name, stream); | |
1087 | else | |
1088 | pascal_type_print_base (domain, stream, 0, 0); | |
1089 | fprintf_filtered (stream, "::"); | |
1090 | fputs_filtered (TYPE_FIELD_NAME (domain, i), stream); | |
1091 | if (extra) | |
1092 | fprintf_filtered (stream, " + %d bytes", extra); | |
1093 | if (bits) | |
1094 | fprintf_filtered (stream, " (offset in bits)"); | |
1095 | } | |
1096 | else | |
1097 | fprintf_filtered (stream, "%ld", (long int) (val >> 3)); | |
1098 | } | |
1099 | ||
1100 | ||
1101 | void | |
fba45db2 | 1102 | _initialize_pascal_valprint (void) |
373a8247 PM |
1103 | { |
1104 | add_show_from_set | |
1105 | (add_set_cmd ("pascal_static-members", class_support, var_boolean, | |
1106 | (char *) &pascal_static_field_print, | |
1107 | "Set printing of pascal static members.", | |
1108 | &setprintlist), | |
1109 | &showprintlist); | |
1110 | /* Turn on printing of static fields. */ | |
1111 | pascal_static_field_print = 1; | |
1112 | ||
1113 | } |