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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" | |
34 | #include "language.h" | |
35 | #include "target.h" | |
36 | #include "annotate.h" | |
37 | #include "p-lang.h" | |
38 | \f | |
39 | ||
40 | ||
41 | ||
42 | /* Print data of type TYPE located at VALADDR (within GDB), which came from | |
43 | the inferior at address ADDRESS, onto stdio stream STREAM according to | |
44 | FORMAT (a letter or 0 for natural format). The data at VALADDR is in | |
45 | target byte order. | |
46 | ||
47 | If the data are a string pointer, returns the number of string characters | |
48 | printed. | |
49 | ||
50 | If DEREF_REF is nonzero, then dereference references, otherwise just print | |
51 | them like pointers. | |
52 | ||
53 | The PRETTY parameter controls prettyprinting. */ | |
54 | ||
55 | ||
56 | int | |
57 | pascal_val_print (type, valaddr, embedded_offset, address, stream, format, deref_ref, recurse, | |
58 | pretty) | |
59 | struct type *type; | |
60 | char *valaddr; | |
61 | int embedded_offset; | |
62 | CORE_ADDR address; | |
63 | struct ui_file *stream; | |
64 | int format; | |
65 | int deref_ref; | |
66 | int recurse; | |
67 | enum val_prettyprint pretty; | |
68 | { | |
69 | register unsigned int i = 0; /* Number of characters printed */ | |
70 | unsigned len; | |
71 | struct type *elttype; | |
72 | unsigned eltlen; | |
73 | LONGEST val; | |
74 | CORE_ADDR addr; | |
75 | ||
76 | CHECK_TYPEDEF (type); | |
77 | switch (TYPE_CODE (type)) | |
78 | { | |
79 | case TYPE_CODE_ARRAY: | |
80 | if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0) | |
81 | { | |
82 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
83 | eltlen = TYPE_LENGTH (elttype); | |
84 | len = TYPE_LENGTH (type) / eltlen; | |
85 | if (prettyprint_arrays) | |
86 | { | |
87 | print_spaces_filtered (2 + 2 * recurse, stream); | |
88 | } | |
89 | /* For an array of chars, print with string syntax. */ | |
90 | if (eltlen == 1 && | |
91 | ((TYPE_CODE (elttype) == TYPE_CODE_INT) | |
92 | || ((current_language->la_language == language_m2) | |
93 | && (TYPE_CODE (elttype) == TYPE_CODE_CHAR))) | |
94 | && (format == 0 || format == 's')) | |
95 | { | |
96 | /* If requested, look for the first null char and only print | |
97 | elements up to it. */ | |
98 | if (stop_print_at_null) | |
99 | { | |
100 | unsigned int temp_len; | |
101 | ||
102 | /* Look for a NULL char. */ | |
103 | for (temp_len = 0; | |
104 | (valaddr + embedded_offset)[temp_len] | |
105 | && temp_len < len && temp_len < print_max; | |
106 | temp_len++); | |
107 | len = temp_len; | |
108 | } | |
109 | ||
110 | LA_PRINT_STRING (stream, valaddr + embedded_offset, len, 1, 0); | |
111 | i = len; | |
112 | } | |
113 | else | |
114 | { | |
115 | fprintf_filtered (stream, "{"); | |
116 | /* If this is a virtual function table, print the 0th | |
117 | entry specially, and the rest of the members normally. */ | |
118 | if (pascal_object_is_vtbl_ptr_type (elttype)) | |
119 | { | |
120 | i = 1; | |
121 | fprintf_filtered (stream, "%d vtable entries", len - 1); | |
122 | } | |
123 | else | |
124 | { | |
125 | i = 0; | |
126 | } | |
127 | val_print_array_elements (type, valaddr + embedded_offset, address, stream, | |
128 | format, deref_ref, recurse, pretty, i); | |
129 | fprintf_filtered (stream, "}"); | |
130 | } | |
131 | break; | |
132 | } | |
133 | /* Array of unspecified length: treat like pointer to first elt. */ | |
134 | addr = address; | |
135 | goto print_unpacked_pointer; | |
136 | ||
137 | case TYPE_CODE_PTR: | |
138 | if (format && format != 's') | |
139 | { | |
140 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
141 | break; | |
142 | } | |
143 | if (vtblprint && pascal_object_is_vtbl_ptr_type (type)) | |
144 | { | |
145 | /* Print the unmangled name if desired. */ | |
146 | /* Print vtable entry - we only get here if we ARE using | |
147 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */ | |
148 | print_address_demangle (extract_address (valaddr + embedded_offset, TYPE_LENGTH (type)), | |
149 | stream, demangle); | |
150 | break; | |
151 | } | |
152 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
153 | if (TYPE_CODE (elttype) == TYPE_CODE_METHOD) | |
154 | { | |
155 | pascal_object_print_class_method (valaddr + embedded_offset, type, stream); | |
156 | } | |
157 | else if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER) | |
158 | { | |
159 | pascal_object_print_class_member (valaddr + embedded_offset, | |
160 | TYPE_DOMAIN_TYPE (TYPE_TARGET_TYPE (type)), | |
161 | stream, "&"); | |
162 | } | |
163 | else | |
164 | { | |
165 | addr = unpack_pointer (type, valaddr + embedded_offset); | |
166 | print_unpacked_pointer: | |
167 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
168 | ||
169 | if (TYPE_CODE (elttype) == TYPE_CODE_FUNC) | |
170 | { | |
171 | /* Try to print what function it points to. */ | |
172 | print_address_demangle (addr, stream, demangle); | |
173 | /* Return value is irrelevant except for string pointers. */ | |
174 | return (0); | |
175 | } | |
176 | ||
177 | if (addressprint && format != 's') | |
178 | { | |
179 | print_address_numeric (addr, 1, stream); | |
180 | } | |
181 | ||
182 | /* For a pointer to char or unsigned char, also print the string | |
183 | pointed to, unless pointer is null. */ | |
184 | if (TYPE_LENGTH (elttype) == 1 | |
185 | && TYPE_CODE (elttype) == TYPE_CODE_INT | |
186 | && (format == 0 || format == 's') | |
187 | && addr != 0) | |
188 | { | |
189 | /* no wide string yet */ | |
190 | i = val_print_string (addr, -1, 1, stream); | |
191 | } | |
192 | /* also for pointers to pascal strings */ | |
193 | /* Note: this is Free Pascal specific: | |
194 | as GDB does not recognize stabs pascal strings | |
195 | Pascal strings are mapped to records | |
196 | with lowercase names PM */ | |
197 | /* I don't know what GPC does :( PM */ | |
198 | if (TYPE_CODE (elttype) == TYPE_CODE_STRUCT && | |
199 | TYPE_NFIELDS (elttype) == 2 && | |
200 | strcmp (TYPE_FIELDS (elttype)[0].name, "length") == 0 && | |
201 | strcmp (TYPE_FIELDS (elttype)[1].name, "st") == 0 && | |
202 | addr != 0) | |
203 | { | |
204 | char bytelength; | |
205 | read_memory (addr, &bytelength, 1); | |
206 | i = val_print_string (addr + 1, bytelength, 1, stream); | |
207 | } | |
208 | else if (pascal_object_is_vtbl_member (type)) | |
209 | { | |
210 | /* print vtbl's nicely */ | |
211 | CORE_ADDR vt_address = unpack_pointer (type, valaddr + embedded_offset); | |
212 | ||
213 | struct minimal_symbol *msymbol = | |
214 | lookup_minimal_symbol_by_pc (vt_address); | |
215 | if ((msymbol != NULL) && | |
216 | (vt_address == SYMBOL_VALUE_ADDRESS (msymbol))) | |
217 | { | |
218 | fputs_filtered (" <", stream); | |
219 | fputs_filtered (SYMBOL_SOURCE_NAME (msymbol), stream); | |
220 | fputs_filtered (">", stream); | |
221 | } | |
222 | if (vt_address && vtblprint) | |
223 | { | |
224 | value_ptr vt_val; | |
225 | struct symbol *wsym = (struct symbol *) NULL; | |
226 | struct type *wtype; | |
227 | struct symtab *s; | |
228 | struct block *block = (struct block *) NULL; | |
229 | int is_this_fld; | |
230 | ||
231 | if (msymbol != NULL) | |
232 | wsym = lookup_symbol (SYMBOL_NAME (msymbol), block, | |
233 | VAR_NAMESPACE, &is_this_fld, &s); | |
234 | ||
235 | if (wsym) | |
236 | { | |
237 | wtype = SYMBOL_TYPE (wsym); | |
238 | } | |
239 | else | |
240 | { | |
241 | wtype = TYPE_TARGET_TYPE (type); | |
242 | } | |
243 | vt_val = value_at (wtype, vt_address, NULL); | |
244 | val_print (VALUE_TYPE (vt_val), VALUE_CONTENTS (vt_val), 0, | |
245 | VALUE_ADDRESS (vt_val), stream, format, | |
246 | deref_ref, recurse + 1, pretty); | |
247 | if (pretty) | |
248 | { | |
249 | fprintf_filtered (stream, "\n"); | |
250 | print_spaces_filtered (2 + 2 * recurse, stream); | |
251 | } | |
252 | } | |
253 | } | |
254 | ||
255 | /* Return number of characters printed, including the terminating | |
256 | '\0' if we reached the end. val_print_string takes care including | |
257 | the terminating '\0' if necessary. */ | |
258 | return i; | |
259 | } | |
260 | break; | |
261 | ||
262 | case TYPE_CODE_MEMBER: | |
263 | error ("not implemented: member type in pascal_val_print"); | |
264 | break; | |
265 | ||
266 | case TYPE_CODE_REF: | |
267 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
268 | if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER) | |
269 | { | |
270 | pascal_object_print_class_member (valaddr + embedded_offset, | |
271 | TYPE_DOMAIN_TYPE (elttype), | |
272 | stream, ""); | |
273 | break; | |
274 | } | |
275 | if (addressprint) | |
276 | { | |
277 | fprintf_filtered (stream, "@"); | |
278 | print_address_numeric | |
279 | (extract_address (valaddr + embedded_offset, | |
280 | TARGET_PTR_BIT / HOST_CHAR_BIT), 1, stream); | |
281 | if (deref_ref) | |
282 | fputs_filtered (": ", stream); | |
283 | } | |
284 | /* De-reference the reference. */ | |
285 | if (deref_ref) | |
286 | { | |
287 | if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF) | |
288 | { | |
289 | value_ptr deref_val = | |
290 | value_at | |
291 | (TYPE_TARGET_TYPE (type), | |
292 | unpack_pointer (lookup_pointer_type (builtin_type_void), | |
293 | valaddr + embedded_offset), | |
294 | NULL); | |
295 | val_print (VALUE_TYPE (deref_val), | |
296 | VALUE_CONTENTS (deref_val), 0, | |
297 | VALUE_ADDRESS (deref_val), stream, format, | |
298 | deref_ref, recurse + 1, pretty); | |
299 | } | |
300 | else | |
301 | fputs_filtered ("???", stream); | |
302 | } | |
303 | break; | |
304 | ||
305 | case TYPE_CODE_UNION: | |
306 | if (recurse && !unionprint) | |
307 | { | |
308 | fprintf_filtered (stream, "{...}"); | |
309 | break; | |
310 | } | |
311 | /* Fall through. */ | |
312 | case TYPE_CODE_STRUCT: | |
313 | if (vtblprint && pascal_object_is_vtbl_ptr_type (type)) | |
314 | { | |
315 | /* Print the unmangled name if desired. */ | |
316 | /* Print vtable entry - we only get here if NOT using | |
317 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */ | |
318 | print_address_demangle (extract_address ( | |
319 | valaddr + embedded_offset + TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8, | |
320 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET))), | |
321 | stream, demangle); | |
322 | } | |
323 | else | |
324 | { | |
325 | if ((TYPE_NFIELDS (type) == 2) && | |
326 | (strcmp (TYPE_FIELDS (type)[0].name, "length") == 0) && | |
327 | (strcmp (TYPE_FIELDS (type)[1].name, "st") == 0)) | |
328 | { | |
329 | len = (*(valaddr + embedded_offset)) & 0xff; | |
330 | LA_PRINT_STRING (stream, valaddr + embedded_offset + 1, len, /* width ?? */ 0, 0); | |
331 | } | |
332 | else | |
333 | pascal_object_print_value_fields (type, valaddr + embedded_offset, address, stream, format, | |
334 | recurse, pretty, NULL, 0); | |
335 | } | |
336 | break; | |
337 | ||
338 | case TYPE_CODE_ENUM: | |
339 | if (format) | |
340 | { | |
341 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
342 | break; | |
343 | } | |
344 | len = TYPE_NFIELDS (type); | |
345 | val = unpack_long (type, valaddr + embedded_offset); | |
346 | for (i = 0; i < len; i++) | |
347 | { | |
348 | QUIT; | |
349 | if (val == TYPE_FIELD_BITPOS (type, i)) | |
350 | { | |
351 | break; | |
352 | } | |
353 | } | |
354 | if (i < len) | |
355 | { | |
356 | fputs_filtered (TYPE_FIELD_NAME (type, i), stream); | |
357 | } | |
358 | else | |
359 | { | |
360 | print_longest (stream, 'd', 0, val); | |
361 | } | |
362 | break; | |
363 | ||
364 | case TYPE_CODE_FUNC: | |
365 | if (format) | |
366 | { | |
367 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
368 | break; | |
369 | } | |
370 | /* FIXME, we should consider, at least for ANSI C language, eliminating | |
371 | the distinction made between FUNCs and POINTERs to FUNCs. */ | |
372 | fprintf_filtered (stream, "{"); | |
373 | type_print (type, "", stream, -1); | |
374 | fprintf_filtered (stream, "} "); | |
375 | /* Try to print what function it points to, and its address. */ | |
376 | print_address_demangle (address, stream, demangle); | |
377 | break; | |
378 | ||
379 | case TYPE_CODE_BOOL: | |
380 | format = format ? format : output_format; | |
381 | if (format) | |
382 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
383 | else | |
384 | { | |
385 | val = unpack_long (type, valaddr + embedded_offset); | |
386 | if (val == 0) | |
387 | fputs_filtered ("false", stream); | |
388 | else if (val == 1) | |
389 | fputs_filtered ("true", stream); | |
390 | else | |
391 | { | |
392 | fputs_filtered ("true (", stream); | |
393 | fprintf_filtered (stream, "%ld)", (long int) val); | |
394 | } | |
395 | } | |
396 | break; | |
397 | ||
398 | case TYPE_CODE_RANGE: | |
399 | /* FIXME: create_range_type does not set the unsigned bit in a | |
400 | range type (I think it probably should copy it from the target | |
401 | type), so we won't print values which are too large to | |
402 | fit in a signed integer correctly. */ | |
403 | /* FIXME: Doesn't handle ranges of enums correctly. (Can't just | |
404 | print with the target type, though, because the size of our type | |
405 | and the target type might differ). */ | |
406 | /* FALLTHROUGH */ | |
407 | ||
408 | case TYPE_CODE_INT: | |
409 | format = format ? format : output_format; | |
410 | if (format) | |
411 | { | |
412 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
413 | } | |
414 | else | |
415 | { | |
416 | val_print_type_code_int (type, valaddr + embedded_offset, stream); | |
417 | } | |
418 | break; | |
419 | ||
420 | case TYPE_CODE_CHAR: | |
421 | format = format ? format : output_format; | |
422 | if (format) | |
423 | { | |
424 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
425 | } | |
426 | else | |
427 | { | |
428 | val = unpack_long (type, valaddr + embedded_offset); | |
429 | if (TYPE_UNSIGNED (type)) | |
430 | fprintf_filtered (stream, "%u", (unsigned int) val); | |
431 | else | |
432 | fprintf_filtered (stream, "%d", (int) val); | |
433 | fputs_filtered (" ", stream); | |
434 | LA_PRINT_CHAR ((unsigned char) val, stream); | |
435 | } | |
436 | break; | |
437 | ||
438 | case TYPE_CODE_FLT: | |
439 | if (format) | |
440 | { | |
441 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
442 | } | |
443 | else | |
444 | { | |
445 | print_floating (valaddr + embedded_offset, type, stream); | |
446 | } | |
447 | break; | |
448 | ||
449 | case TYPE_CODE_BITSTRING: | |
450 | case TYPE_CODE_SET: | |
451 | elttype = TYPE_INDEX_TYPE (type); | |
452 | CHECK_TYPEDEF (elttype); | |
453 | if (TYPE_FLAGS (elttype) & TYPE_FLAG_STUB) | |
454 | { | |
455 | fprintf_filtered (stream, "<incomplete type>"); | |
456 | gdb_flush (stream); | |
457 | break; | |
458 | } | |
459 | else | |
460 | { | |
461 | struct type *range = elttype; | |
462 | LONGEST low_bound, high_bound; | |
463 | int i; | |
464 | int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING; | |
465 | int need_comma = 0; | |
466 | ||
467 | if (is_bitstring) | |
468 | fputs_filtered ("B'", stream); | |
469 | else | |
470 | fputs_filtered ("[", stream); | |
471 | ||
472 | i = get_discrete_bounds (range, &low_bound, &high_bound); | |
473 | maybe_bad_bstring: | |
474 | if (i < 0) | |
475 | { | |
476 | fputs_filtered ("<error value>", stream); | |
477 | goto done; | |
478 | } | |
479 | ||
480 | for (i = low_bound; i <= high_bound; i++) | |
481 | { | |
482 | int element = value_bit_index (type, valaddr + embedded_offset, i); | |
483 | if (element < 0) | |
484 | { | |
485 | i = element; | |
486 | goto maybe_bad_bstring; | |
487 | } | |
488 | if (is_bitstring) | |
489 | fprintf_filtered (stream, "%d", element); | |
490 | else if (element) | |
491 | { | |
492 | if (need_comma) | |
493 | fputs_filtered (", ", stream); | |
494 | print_type_scalar (range, i, stream); | |
495 | need_comma = 1; | |
496 | ||
497 | if (i + 1 <= high_bound && value_bit_index (type, valaddr + embedded_offset, ++i)) | |
498 | { | |
499 | int j = i; | |
500 | fputs_filtered ("..", stream); | |
501 | while (i + 1 <= high_bound | |
502 | && value_bit_index (type, valaddr + embedded_offset, ++i)) | |
503 | j = i; | |
504 | print_type_scalar (range, j, stream); | |
505 | } | |
506 | } | |
507 | } | |
508 | done: | |
509 | if (is_bitstring) | |
510 | fputs_filtered ("'", stream); | |
511 | else | |
512 | fputs_filtered ("]", stream); | |
513 | } | |
514 | break; | |
515 | ||
516 | case TYPE_CODE_VOID: | |
517 | fprintf_filtered (stream, "void"); | |
518 | break; | |
519 | ||
520 | case TYPE_CODE_ERROR: | |
521 | fprintf_filtered (stream, "<error type>"); | |
522 | break; | |
523 | ||
524 | case TYPE_CODE_UNDEF: | |
525 | /* This happens (without TYPE_FLAG_STUB set) on systems which don't use | |
526 | dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar" | |
527 | and no complete type for struct foo in that file. */ | |
528 | fprintf_filtered (stream, "<incomplete type>"); | |
529 | break; | |
530 | ||
531 | default: | |
532 | error ("Invalid pascal type code %d in symbol table.", TYPE_CODE (type)); | |
533 | } | |
534 | gdb_flush (stream); | |
535 | return (0); | |
536 | } | |
537 | \f | |
538 | int | |
539 | pascal_value_print (val, stream, format, pretty) | |
540 | value_ptr val; | |
541 | struct ui_file *stream; | |
542 | int format; | |
543 | enum val_prettyprint pretty; | |
544 | { | |
545 | struct type *type = VALUE_TYPE (val); | |
546 | ||
547 | /* If it is a pointer, indicate what it points to. | |
548 | ||
549 | Print type also if it is a reference. | |
550 | ||
551 | Object pascal: if it is a member pointer, we will take care | |
552 | of that when we print it. */ | |
553 | if (TYPE_CODE (type) == TYPE_CODE_PTR || | |
554 | TYPE_CODE (type) == TYPE_CODE_REF) | |
555 | { | |
556 | /* Hack: remove (char *) for char strings. Their | |
557 | type is indicated by the quoted string anyway. */ | |
558 | if (TYPE_CODE (type) == TYPE_CODE_PTR && | |
559 | TYPE_NAME (type) == NULL && | |
560 | TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL && | |
561 | STREQ (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char")) | |
562 | { | |
563 | /* Print nothing */ | |
564 | } | |
565 | else | |
566 | { | |
567 | fprintf_filtered (stream, "("); | |
568 | type_print (type, "", stream, -1); | |
569 | fprintf_filtered (stream, ") "); | |
570 | } | |
571 | } | |
572 | return val_print (type, VALUE_CONTENTS (val), VALUE_EMBEDDED_OFFSET (val), | |
573 | VALUE_ADDRESS (val) + VALUE_OFFSET (val), | |
574 | stream, format, 1, 0, pretty); | |
575 | } | |
576 | ||
577 | ||
578 | /****************************************************************************** | |
579 | Inserted from cp-valprint | |
580 | ******************************************************************************/ | |
581 | ||
582 | extern int vtblprint; /* Controls printing of vtbl's */ | |
583 | extern int objectprint; /* Controls looking up an object's derived type | |
584 | using what we find in its vtables. */ | |
585 | static int pascal_static_field_print; /* Controls printing of static fields. */ | |
586 | ||
587 | static struct obstack dont_print_vb_obstack; | |
588 | static struct obstack dont_print_statmem_obstack; | |
589 | ||
590 | static void | |
591 | pascal_object_print_static_field (struct type *, value_ptr, struct ui_file *, int, int, | |
592 | enum val_prettyprint); | |
593 | ||
594 | static void | |
595 | pascal_object_print_value (struct type *, char *, CORE_ADDR, struct ui_file *, | |
596 | int, int, enum val_prettyprint, struct type **); | |
597 | ||
598 | void | |
599 | pascal_object_print_class_method (valaddr, type, stream) | |
600 | char *valaddr; | |
601 | struct type *type; | |
602 | struct ui_file *stream; | |
603 | { | |
604 | struct type *domain; | |
605 | struct fn_field *f = NULL; | |
606 | int j = 0; | |
607 | int len2; | |
608 | int offset; | |
609 | char *kind = ""; | |
610 | CORE_ADDR addr; | |
611 | struct symbol *sym; | |
612 | unsigned len; | |
613 | unsigned int i; | |
614 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); | |
615 | ||
616 | domain = TYPE_DOMAIN_TYPE (target_type); | |
617 | if (domain == (struct type *) NULL) | |
618 | { | |
619 | fprintf_filtered (stream, "<unknown>"); | |
620 | return; | |
621 | } | |
622 | addr = unpack_pointer (lookup_pointer_type (builtin_type_void), valaddr); | |
623 | if (METHOD_PTR_IS_VIRTUAL (addr)) | |
624 | { | |
625 | offset = METHOD_PTR_TO_VOFFSET (addr); | |
626 | len = TYPE_NFN_FIELDS (domain); | |
627 | for (i = 0; i < len; i++) | |
628 | { | |
629 | f = TYPE_FN_FIELDLIST1 (domain, i); | |
630 | len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); | |
631 | ||
632 | for (j = 0; j < len2; j++) | |
633 | { | |
634 | QUIT; | |
635 | if (TYPE_FN_FIELD_VOFFSET (f, j) == offset) | |
636 | { | |
637 | if (TYPE_FN_FIELD_STUB (f, j)) | |
638 | check_stub_method (domain, i, j); | |
639 | kind = "virtual "; | |
640 | goto common; | |
641 | } | |
642 | } | |
643 | } | |
644 | } | |
645 | else | |
646 | { | |
647 | sym = find_pc_function (addr); | |
648 | if (sym == 0) | |
649 | { | |
650 | error ("invalid pointer to member function"); | |
651 | } | |
652 | len = TYPE_NFN_FIELDS (domain); | |
653 | for (i = 0; i < len; i++) | |
654 | { | |
655 | f = TYPE_FN_FIELDLIST1 (domain, i); | |
656 | len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); | |
657 | ||
658 | for (j = 0; j < len2; j++) | |
659 | { | |
660 | QUIT; | |
661 | if (TYPE_FN_FIELD_STUB (f, j)) | |
662 | check_stub_method (domain, i, j); | |
663 | if (STREQ (SYMBOL_NAME (sym), TYPE_FN_FIELD_PHYSNAME (f, j))) | |
664 | { | |
665 | goto common; | |
666 | } | |
667 | } | |
668 | } | |
669 | } | |
670 | common: | |
671 | if (i < len) | |
672 | { | |
673 | char *demangled_name; | |
674 | ||
675 | fprintf_filtered (stream, "&"); | |
676 | fprintf_filtered (stream, kind); | |
677 | demangled_name = cplus_demangle (TYPE_FN_FIELD_PHYSNAME (f, j), | |
678 | DMGL_ANSI | DMGL_PARAMS); | |
679 | if (demangled_name == NULL) | |
680 | fprintf_filtered (stream, "<badly mangled name %s>", | |
681 | TYPE_FN_FIELD_PHYSNAME (f, j)); | |
682 | else | |
683 | { | |
684 | fputs_filtered (demangled_name, stream); | |
685 | free (demangled_name); | |
686 | } | |
687 | } | |
688 | else | |
689 | { | |
690 | fprintf_filtered (stream, "("); | |
691 | type_print (type, "", stream, -1); | |
692 | fprintf_filtered (stream, ") %d", (int) addr >> 3); | |
693 | } | |
694 | } | |
695 | ||
696 | /* It was changed to this after 2.4.5. */ | |
697 | const char pascal_vtbl_ptr_name[] = | |
698 | {'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; | |
699 | ||
700 | /* Return truth value for assertion that TYPE is of the type | |
701 | "pointer to virtual function". */ | |
702 | ||
703 | int | |
704 | pascal_object_is_vtbl_ptr_type (type) | |
705 | struct type *type; | |
706 | { | |
707 | char *typename = type_name_no_tag (type); | |
708 | ||
709 | return (typename != NULL | |
710 | && (STREQ (typename, pascal_vtbl_ptr_name))); | |
711 | } | |
712 | ||
713 | /* Return truth value for the assertion that TYPE is of the type | |
714 | "pointer to virtual function table". */ | |
715 | ||
716 | int | |
717 | pascal_object_is_vtbl_member (type) | |
718 | struct type *type; | |
719 | { | |
720 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
721 | { | |
722 | type = TYPE_TARGET_TYPE (type); | |
723 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
724 | { | |
725 | type = TYPE_TARGET_TYPE (type); | |
726 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */ | |
727 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */ | |
728 | { | |
729 | /* Virtual functions tables are full of pointers | |
730 | to virtual functions. */ | |
731 | return pascal_object_is_vtbl_ptr_type (type); | |
732 | } | |
733 | } | |
734 | } | |
735 | return 0; | |
736 | } | |
737 | ||
738 | /* Mutually recursive subroutines of pascal_object_print_value and c_val_print to | |
739 | print out a structure's fields: pascal_object_print_value_fields and pascal_object_print_value. | |
740 | ||
741 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the | |
742 | same meanings as in pascal_object_print_value and c_val_print. | |
743 | ||
744 | DONT_PRINT is an array of baseclass types that we | |
745 | should not print, or zero if called from top level. */ | |
746 | ||
747 | void | |
748 | pascal_object_print_value_fields (type, valaddr, address, stream, format, recurse, pretty, | |
749 | dont_print_vb, dont_print_statmem) | |
750 | struct type *type; | |
751 | char *valaddr; | |
752 | CORE_ADDR address; | |
753 | struct ui_file *stream; | |
754 | int format; | |
755 | int recurse; | |
756 | enum val_prettyprint pretty; | |
757 | struct type **dont_print_vb; | |
758 | int dont_print_statmem; | |
759 | { | |
760 | int i, len, n_baseclasses; | |
761 | struct obstack tmp_obstack; | |
762 | char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack); | |
763 | ||
764 | CHECK_TYPEDEF (type); | |
765 | ||
766 | fprintf_filtered (stream, "{"); | |
767 | len = TYPE_NFIELDS (type); | |
768 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
769 | ||
770 | /* Print out baseclasses such that we don't print | |
771 | duplicates of virtual baseclasses. */ | |
772 | if (n_baseclasses > 0) | |
773 | pascal_object_print_value (type, valaddr, address, stream, | |
774 | format, recurse + 1, pretty, dont_print_vb); | |
775 | ||
776 | if (!len && n_baseclasses == 1) | |
777 | fprintf_filtered (stream, "<No data fields>"); | |
778 | else | |
779 | { | |
780 | extern int inspect_it; | |
781 | int fields_seen = 0; | |
782 | ||
783 | if (dont_print_statmem == 0) | |
784 | { | |
785 | /* If we're at top level, carve out a completely fresh | |
786 | chunk of the obstack and use that until this particular | |
787 | invocation returns. */ | |
788 | tmp_obstack = dont_print_statmem_obstack; | |
789 | obstack_finish (&dont_print_statmem_obstack); | |
790 | } | |
791 | ||
792 | for (i = n_baseclasses; i < len; i++) | |
793 | { | |
794 | /* If requested, skip printing of static fields. */ | |
795 | if (!pascal_static_field_print && TYPE_FIELD_STATIC (type, i)) | |
796 | continue; | |
797 | if (fields_seen) | |
798 | fprintf_filtered (stream, ", "); | |
799 | else if (n_baseclasses > 0) | |
800 | { | |
801 | if (pretty) | |
802 | { | |
803 | fprintf_filtered (stream, "\n"); | |
804 | print_spaces_filtered (2 + 2 * recurse, stream); | |
805 | fputs_filtered ("members of ", stream); | |
806 | fputs_filtered (type_name_no_tag (type), stream); | |
807 | fputs_filtered (": ", stream); | |
808 | } | |
809 | } | |
810 | fields_seen = 1; | |
811 | ||
812 | if (pretty) | |
813 | { | |
814 | fprintf_filtered (stream, "\n"); | |
815 | print_spaces_filtered (2 + 2 * recurse, stream); | |
816 | } | |
817 | else | |
818 | { | |
819 | wrap_here (n_spaces (2 + 2 * recurse)); | |
820 | } | |
821 | if (inspect_it) | |
822 | { | |
823 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR) | |
824 | fputs_filtered ("\"( ptr \"", stream); | |
825 | else | |
826 | fputs_filtered ("\"( nodef \"", stream); | |
827 | if (TYPE_FIELD_STATIC (type, i)) | |
828 | fputs_filtered ("static ", stream); | |
829 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
830 | language_cplus, | |
831 | DMGL_PARAMS | DMGL_ANSI); | |
832 | fputs_filtered ("\" \"", stream); | |
833 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
834 | language_cplus, | |
835 | DMGL_PARAMS | DMGL_ANSI); | |
836 | fputs_filtered ("\") \"", stream); | |
837 | } | |
838 | else | |
839 | { | |
840 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
841 | ||
842 | if (TYPE_FIELD_STATIC (type, i)) | |
843 | fputs_filtered ("static ", stream); | |
844 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
845 | language_cplus, | |
846 | DMGL_PARAMS | DMGL_ANSI); | |
847 | annotate_field_name_end (); | |
848 | fputs_filtered (" = ", stream); | |
849 | annotate_field_value (); | |
850 | } | |
851 | ||
852 | if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i)) | |
853 | { | |
854 | value_ptr v; | |
855 | ||
856 | /* Bitfields require special handling, especially due to byte | |
857 | order problems. */ | |
858 | if (TYPE_FIELD_IGNORE (type, i)) | |
859 | { | |
860 | fputs_filtered ("<optimized out or zero length>", stream); | |
861 | } | |
862 | else | |
863 | { | |
864 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), | |
865 | unpack_field_as_long (type, valaddr, i)); | |
866 | ||
867 | val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), 0, 0, | |
868 | stream, format, 0, recurse + 1, pretty); | |
869 | } | |
870 | } | |
871 | else | |
872 | { | |
873 | if (TYPE_FIELD_IGNORE (type, i)) | |
874 | { | |
875 | fputs_filtered ("<optimized out or zero length>", stream); | |
876 | } | |
877 | else if (TYPE_FIELD_STATIC (type, i)) | |
878 | { | |
879 | /* value_ptr v = value_static_field (type, i); v4.17 specific */ | |
880 | value_ptr v; | |
881 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), | |
882 | unpack_field_as_long (type, valaddr, i)); | |
883 | ||
884 | if (v == NULL) | |
885 | fputs_filtered ("<optimized out>", stream); | |
886 | else | |
887 | pascal_object_print_static_field (TYPE_FIELD_TYPE (type, i), v, | |
888 | stream, format, recurse + 1, | |
889 | pretty); | |
890 | } | |
891 | else | |
892 | { | |
893 | /* val_print (TYPE_FIELD_TYPE (type, i), | |
894 | valaddr + TYPE_FIELD_BITPOS (type, i) / 8, | |
895 | address + TYPE_FIELD_BITPOS (type, i) / 8, 0, | |
896 | stream, format, 0, recurse + 1, pretty); */ | |
897 | val_print (TYPE_FIELD_TYPE (type, i), | |
898 | valaddr, TYPE_FIELD_BITPOS (type, i) / 8, | |
899 | address + TYPE_FIELD_BITPOS (type, i) / 8, | |
900 | stream, format, 0, recurse + 1, pretty); | |
901 | } | |
902 | } | |
903 | annotate_field_end (); | |
904 | } | |
905 | ||
906 | if (dont_print_statmem == 0) | |
907 | { | |
908 | /* Free the space used to deal with the printing | |
909 | of the members from top level. */ | |
910 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
911 | dont_print_statmem_obstack = tmp_obstack; | |
912 | } | |
913 | ||
914 | if (pretty) | |
915 | { | |
916 | fprintf_filtered (stream, "\n"); | |
917 | print_spaces_filtered (2 * recurse, stream); | |
918 | } | |
919 | } | |
920 | fprintf_filtered (stream, "}"); | |
921 | } | |
922 | ||
923 | /* Special val_print routine to avoid printing multiple copies of virtual | |
924 | baseclasses. */ | |
925 | ||
926 | void | |
927 | pascal_object_print_value (type, valaddr, address, stream, format, recurse, pretty, | |
928 | dont_print_vb) | |
929 | struct type *type; | |
930 | char *valaddr; | |
931 | CORE_ADDR address; | |
932 | struct ui_file *stream; | |
933 | int format; | |
934 | int recurse; | |
935 | enum val_prettyprint pretty; | |
936 | struct type **dont_print_vb; | |
937 | { | |
938 | struct obstack tmp_obstack; | |
939 | struct type **last_dont_print | |
940 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); | |
941 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); | |
942 | ||
943 | if (dont_print_vb == 0) | |
944 | { | |
945 | /* If we're at top level, carve out a completely fresh | |
946 | chunk of the obstack and use that until this particular | |
947 | invocation returns. */ | |
948 | tmp_obstack = dont_print_vb_obstack; | |
949 | /* Bump up the high-water mark. Now alpha is omega. */ | |
950 | obstack_finish (&dont_print_vb_obstack); | |
951 | } | |
952 | ||
953 | for (i = 0; i < n_baseclasses; i++) | |
954 | { | |
955 | int boffset; | |
956 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); | |
957 | char *basename = TYPE_NAME (baseclass); | |
958 | char *base_valaddr; | |
959 | ||
960 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
961 | { | |
962 | struct type **first_dont_print | |
963 | = (struct type **) obstack_base (&dont_print_vb_obstack); | |
964 | ||
965 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) | |
966 | - first_dont_print; | |
967 | ||
968 | while (--j >= 0) | |
969 | if (baseclass == first_dont_print[j]) | |
970 | goto flush_it; | |
971 | ||
972 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
973 | } | |
974 | ||
975 | boffset = baseclass_offset (type, i, valaddr, address); | |
976 | ||
977 | if (pretty) | |
978 | { | |
979 | fprintf_filtered (stream, "\n"); | |
980 | print_spaces_filtered (2 * recurse, stream); | |
981 | } | |
982 | fputs_filtered ("<", stream); | |
983 | /* Not sure what the best notation is in the case where there is no | |
984 | baseclass name. */ | |
985 | ||
986 | fputs_filtered (basename ? basename : "", stream); | |
987 | fputs_filtered ("> = ", stream); | |
988 | ||
989 | /* The virtual base class pointer might have been clobbered by the | |
990 | user program. Make sure that it still points to a valid memory | |
991 | location. */ | |
992 | ||
993 | if (boffset != -1 && (boffset < 0 || boffset >= TYPE_LENGTH (type))) | |
994 | { | |
995 | base_valaddr = (char *) alloca (TYPE_LENGTH (baseclass)); | |
996 | if (target_read_memory (address + boffset, base_valaddr, | |
997 | TYPE_LENGTH (baseclass)) != 0) | |
998 | boffset = -1; | |
999 | } | |
1000 | else | |
1001 | base_valaddr = valaddr + boffset; | |
1002 | ||
1003 | if (boffset == -1) | |
1004 | fprintf_filtered (stream, "<invalid address>"); | |
1005 | else | |
1006 | pascal_object_print_value_fields (baseclass, base_valaddr, address + boffset, | |
1007 | stream, format, recurse, pretty, | |
1008 | (struct type **) obstack_base (&dont_print_vb_obstack), | |
1009 | 0); | |
1010 | fputs_filtered (", ", stream); | |
1011 | ||
1012 | flush_it: | |
1013 | ; | |
1014 | } | |
1015 | ||
1016 | if (dont_print_vb == 0) | |
1017 | { | |
1018 | /* Free the space used to deal with the printing | |
1019 | of this type from top level. */ | |
1020 | obstack_free (&dont_print_vb_obstack, last_dont_print); | |
1021 | /* Reset watermark so that we can continue protecting | |
1022 | ourselves from whatever we were protecting ourselves. */ | |
1023 | dont_print_vb_obstack = tmp_obstack; | |
1024 | } | |
1025 | } | |
1026 | ||
1027 | /* Print value of a static member. | |
1028 | To avoid infinite recursion when printing a class that contains | |
1029 | a static instance of the class, we keep the addresses of all printed | |
1030 | static member classes in an obstack and refuse to print them more | |
1031 | than once. | |
1032 | ||
1033 | VAL contains the value to print, TYPE, STREAM, RECURSE, and PRETTY | |
1034 | have the same meanings as in c_val_print. */ | |
1035 | ||
1036 | static void | |
1037 | pascal_object_print_static_field (type, val, stream, format, recurse, pretty) | |
1038 | struct type *type; | |
1039 | value_ptr val; | |
1040 | struct ui_file *stream; | |
1041 | int format; | |
1042 | int recurse; | |
1043 | enum val_prettyprint pretty; | |
1044 | { | |
1045 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
1046 | { | |
1047 | CORE_ADDR *first_dont_print; | |
1048 | int i; | |
1049 | ||
1050 | first_dont_print | |
1051 | = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); | |
1052 | i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) | |
1053 | - first_dont_print; | |
1054 | ||
1055 | while (--i >= 0) | |
1056 | { | |
1057 | if (VALUE_ADDRESS (val) == first_dont_print[i]) | |
1058 | { | |
1059 | fputs_filtered ("<same as static member of an already seen type>", | |
1060 | stream); | |
1061 | return; | |
1062 | } | |
1063 | } | |
1064 | ||
1065 | obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val), | |
1066 | sizeof (CORE_ADDR)); | |
1067 | ||
1068 | CHECK_TYPEDEF (type); | |
1069 | pascal_object_print_value_fields (type, VALUE_CONTENTS (val), VALUE_ADDRESS (val), | |
1070 | stream, format, recurse, pretty, NULL, 1); | |
1071 | return; | |
1072 | } | |
1073 | val_print (type, VALUE_CONTENTS (val), 0, VALUE_ADDRESS (val), | |
1074 | stream, format, 0, recurse, pretty); | |
1075 | } | |
1076 | ||
1077 | void | |
1078 | pascal_object_print_class_member (valaddr, domain, stream, prefix) | |
1079 | char *valaddr; | |
1080 | struct type *domain; | |
1081 | struct ui_file *stream; | |
1082 | char *prefix; | |
1083 | { | |
1084 | ||
1085 | /* VAL is a byte offset into the structure type DOMAIN. | |
1086 | Find the name of the field for that offset and | |
1087 | print it. */ | |
1088 | int extra = 0; | |
1089 | int bits = 0; | |
1090 | register unsigned int i; | |
1091 | unsigned len = TYPE_NFIELDS (domain); | |
1092 | /* @@ Make VAL into bit offset */ | |
1093 | LONGEST val = unpack_long (builtin_type_int, valaddr) << 3; | |
1094 | for (i = TYPE_N_BASECLASSES (domain); i < len; i++) | |
1095 | { | |
1096 | int bitpos = TYPE_FIELD_BITPOS (domain, i); | |
1097 | QUIT; | |
1098 | if (val == bitpos) | |
1099 | break; | |
1100 | if (val < bitpos && i != 0) | |
1101 | { | |
1102 | /* Somehow pointing into a field. */ | |
1103 | i -= 1; | |
1104 | extra = (val - TYPE_FIELD_BITPOS (domain, i)); | |
1105 | if (extra & 0x7) | |
1106 | bits = 1; | |
1107 | else | |
1108 | extra >>= 3; | |
1109 | break; | |
1110 | } | |
1111 | } | |
1112 | if (i < len) | |
1113 | { | |
1114 | char *name; | |
1115 | fprintf_filtered (stream, prefix); | |
1116 | name = type_name_no_tag (domain); | |
1117 | if (name) | |
1118 | fputs_filtered (name, stream); | |
1119 | else | |
1120 | pascal_type_print_base (domain, stream, 0, 0); | |
1121 | fprintf_filtered (stream, "::"); | |
1122 | fputs_filtered (TYPE_FIELD_NAME (domain, i), stream); | |
1123 | if (extra) | |
1124 | fprintf_filtered (stream, " + %d bytes", extra); | |
1125 | if (bits) | |
1126 | fprintf_filtered (stream, " (offset in bits)"); | |
1127 | } | |
1128 | else | |
1129 | fprintf_filtered (stream, "%ld", (long int) (val >> 3)); | |
1130 | } | |
1131 | ||
1132 | ||
1133 | void | |
1134 | _initialize_pascal_valprint () | |
1135 | { | |
1136 | add_show_from_set | |
1137 | (add_set_cmd ("pascal_static-members", class_support, var_boolean, | |
1138 | (char *) &pascal_static_field_print, | |
1139 | "Set printing of pascal static members.", | |
1140 | &setprintlist), | |
1141 | &showprintlist); | |
1142 | /* Turn on printing of static fields. */ | |
1143 | pascal_static_field_print = 1; | |
1144 | ||
1145 | } |