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 | |
10 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
19 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
20 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
373a8247 PM |
22 | |
23 | /* This file is derived from c-valprint.c */ | |
24 | ||
25 | #include "defs.h" | |
04ea0df1 | 26 | #include "gdb_obstack.h" |
373a8247 PM |
27 | #include "symtab.h" |
28 | #include "gdbtypes.h" | |
29 | #include "expression.h" | |
30 | #include "value.h" | |
31 | #include "command.h" | |
32 | #include "gdbcmd.h" | |
33 | #include "gdbcore.h" | |
34 | #include "demangle.h" | |
35 | #include "valprint.h" | |
3172dc30 | 36 | #include "typeprint.h" |
373a8247 PM |
37 | #include "language.h" |
38 | #include "target.h" | |
39 | #include "annotate.h" | |
40 | #include "p-lang.h" | |
eb43544b | 41 | #include "cp-abi.h" |
d3cbe7ef | 42 | #include "cp-support.h" |
373a8247 PM |
43 | \f |
44 | ||
45 | ||
46 | ||
47 | /* Print data of type TYPE located at VALADDR (within GDB), which came from | |
48 | the inferior at address ADDRESS, onto stdio stream STREAM according to | |
49 | FORMAT (a letter or 0 for natural format). The data at VALADDR is in | |
50 | target byte order. | |
51 | ||
52 | If the data are a string pointer, returns the number of string characters | |
53 | printed. | |
54 | ||
55 | If DEREF_REF is nonzero, then dereference references, otherwise just print | |
56 | them like pointers. | |
57 | ||
58 | The PRETTY parameter controls prettyprinting. */ | |
59 | ||
60 | ||
61 | int | |
fc1a4b47 | 62 | pascal_val_print (struct type *type, const gdb_byte *valaddr, |
a2bd3dcd AC |
63 | int embedded_offset, CORE_ADDR address, |
64 | struct ui_file *stream, int format, int deref_ref, | |
65 | int recurse, enum val_prettyprint pretty) | |
373a8247 | 66 | { |
52f0bd74 | 67 | unsigned int i = 0; /* Number of characters printed */ |
373a8247 PM |
68 | unsigned len; |
69 | struct type *elttype; | |
70 | unsigned eltlen; | |
5598ce11 PM |
71 | int length_pos, length_size, string_pos; |
72 | int char_size; | |
373a8247 PM |
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.) */ | |
b276f1bb AC |
148 | /* Extract the address, assume that it is unsigned. */ |
149 | print_address_demangle (extract_unsigned_integer (valaddr + embedded_offset, TYPE_LENGTH (type)), | |
373a8247 PM |
150 | stream, demangle); |
151 | break; | |
152 | } | |
153 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
373a8247 PM |
154 | { |
155 | addr = unpack_pointer (type, valaddr + embedded_offset); | |
156 | print_unpacked_pointer: | |
157 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
158 | ||
159 | if (TYPE_CODE (elttype) == TYPE_CODE_FUNC) | |
160 | { | |
161 | /* Try to print what function it points to. */ | |
162 | print_address_demangle (addr, stream, demangle); | |
163 | /* Return value is irrelevant except for string pointers. */ | |
164 | return (0); | |
165 | } | |
166 | ||
167 | if (addressprint && format != 's') | |
168 | { | |
66bf4b3a | 169 | deprecated_print_address_numeric (addr, 1, stream); |
373a8247 PM |
170 | } |
171 | ||
172 | /* For a pointer to char or unsigned char, also print the string | |
173 | pointed to, unless pointer is null. */ | |
174 | if (TYPE_LENGTH (elttype) == 1 | |
175 | && TYPE_CODE (elttype) == TYPE_CODE_INT | |
176 | && (format == 0 || format == 's') | |
177 | && addr != 0) | |
178 | { | |
179 | /* no wide string yet */ | |
180 | i = val_print_string (addr, -1, 1, stream); | |
181 | } | |
182 | /* also for pointers to pascal strings */ | |
183 | /* Note: this is Free Pascal specific: | |
184 | as GDB does not recognize stabs pascal strings | |
185 | Pascal strings are mapped to records | |
186 | with lowercase names PM */ | |
e2625b33 PM |
187 | if (is_pascal_string_type (elttype, &length_pos, &length_size, |
188 | &string_pos, &char_size, NULL) | |
5598ce11 | 189 | && addr != 0) |
373a8247 | 190 | { |
5598ce11 PM |
191 | ULONGEST string_length; |
192 | void *buffer; | |
193 | buffer = xmalloc (length_size); | |
194 | read_memory (addr + length_pos, buffer, length_size); | |
195 | string_length = extract_unsigned_integer (buffer, length_size); | |
196 | xfree (buffer); | |
197 | i = val_print_string (addr + string_pos, string_length, char_size, stream); | |
373a8247 PM |
198 | } |
199 | else if (pascal_object_is_vtbl_member (type)) | |
200 | { | |
201 | /* print vtbl's nicely */ | |
202 | CORE_ADDR vt_address = unpack_pointer (type, valaddr + embedded_offset); | |
203 | ||
204 | struct minimal_symbol *msymbol = | |
205 | lookup_minimal_symbol_by_pc (vt_address); | |
5598ce11 PM |
206 | if ((msymbol != NULL) |
207 | && (vt_address == SYMBOL_VALUE_ADDRESS (msymbol))) | |
373a8247 PM |
208 | { |
209 | fputs_filtered (" <", stream); | |
de5ad195 | 210 | fputs_filtered (SYMBOL_PRINT_NAME (msymbol), stream); |
373a8247 PM |
211 | fputs_filtered (">", stream); |
212 | } | |
213 | if (vt_address && vtblprint) | |
214 | { | |
6943961c | 215 | struct value *vt_val; |
373a8247 PM |
216 | struct symbol *wsym = (struct symbol *) NULL; |
217 | struct type *wtype; | |
373a8247 PM |
218 | struct block *block = (struct block *) NULL; |
219 | int is_this_fld; | |
220 | ||
221 | if (msymbol != NULL) | |
22abf04a | 222 | wsym = lookup_symbol (DEPRECATED_SYMBOL_NAME (msymbol), block, |
cdef89d0 | 223 | VAR_DOMAIN, &is_this_fld, NULL); |
373a8247 PM |
224 | |
225 | if (wsym) | |
226 | { | |
227 | wtype = SYMBOL_TYPE (wsym); | |
228 | } | |
229 | else | |
230 | { | |
231 | wtype = TYPE_TARGET_TYPE (type); | |
232 | } | |
00a4c844 | 233 | vt_val = value_at (wtype, vt_address); |
806048c6 DJ |
234 | common_val_print (vt_val, stream, format, deref_ref, |
235 | recurse + 1, pretty); | |
373a8247 PM |
236 | if (pretty) |
237 | { | |
238 | fprintf_filtered (stream, "\n"); | |
239 | print_spaces_filtered (2 + 2 * recurse, stream); | |
240 | } | |
241 | } | |
242 | } | |
243 | ||
244 | /* Return number of characters printed, including the terminating | |
245 | '\0' if we reached the end. val_print_string takes care including | |
246 | the terminating '\0' if necessary. */ | |
247 | return i; | |
248 | } | |
249 | break; | |
250 | ||
373a8247 PM |
251 | case TYPE_CODE_REF: |
252 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
373a8247 PM |
253 | if (addressprint) |
254 | { | |
255 | fprintf_filtered (stream, "@"); | |
b276f1bb | 256 | /* Extract the address, assume that it is unsigned. */ |
66bf4b3a | 257 | deprecated_print_address_numeric |
b276f1bb | 258 | (extract_unsigned_integer (valaddr + embedded_offset, |
819844ad UW |
259 | gdbarch_ptr_bit (current_gdbarch) |
260 | / HOST_CHAR_BIT), | |
b276f1bb | 261 | 1, stream); |
373a8247 PM |
262 | if (deref_ref) |
263 | fputs_filtered (": ", stream); | |
264 | } | |
265 | /* De-reference the reference. */ | |
266 | if (deref_ref) | |
267 | { | |
268 | if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF) | |
269 | { | |
6943961c | 270 | struct value *deref_val = |
373a8247 PM |
271 | value_at |
272 | (TYPE_TARGET_TYPE (type), | |
273 | unpack_pointer (lookup_pointer_type (builtin_type_void), | |
00a4c844 | 274 | valaddr + embedded_offset)); |
806048c6 DJ |
275 | common_val_print (deref_val, stream, format, deref_ref, |
276 | recurse + 1, pretty); | |
373a8247 PM |
277 | } |
278 | else | |
279 | fputs_filtered ("???", stream); | |
280 | } | |
281 | break; | |
282 | ||
283 | case TYPE_CODE_UNION: | |
284 | if (recurse && !unionprint) | |
285 | { | |
286 | fprintf_filtered (stream, "{...}"); | |
287 | break; | |
288 | } | |
289 | /* Fall through. */ | |
290 | case TYPE_CODE_STRUCT: | |
291 | if (vtblprint && pascal_object_is_vtbl_ptr_type (type)) | |
292 | { | |
293 | /* Print the unmangled name if desired. */ | |
294 | /* Print vtable entry - we only get here if NOT using | |
295 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */ | |
b276f1bb AC |
296 | /* Extract the address, assume that it is unsigned. */ |
297 | print_address_demangle | |
298 | (extract_unsigned_integer (valaddr + embedded_offset + TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8, | |
299 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET))), | |
300 | stream, demangle); | |
373a8247 PM |
301 | } |
302 | else | |
303 | { | |
5598ce11 | 304 | if (is_pascal_string_type (type, &length_pos, &length_size, |
e2625b33 | 305 | &string_pos, &char_size, NULL)) |
373a8247 | 306 | { |
5598ce11 PM |
307 | len = extract_unsigned_integer (valaddr + embedded_offset + length_pos, length_size); |
308 | LA_PRINT_STRING (stream, valaddr + embedded_offset + string_pos, len, char_size, 0); | |
373a8247 PM |
309 | } |
310 | else | |
311 | pascal_object_print_value_fields (type, valaddr + embedded_offset, address, stream, format, | |
312 | recurse, pretty, NULL, 0); | |
313 | } | |
314 | break; | |
315 | ||
316 | case TYPE_CODE_ENUM: | |
317 | if (format) | |
318 | { | |
319 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
320 | break; | |
321 | } | |
322 | len = TYPE_NFIELDS (type); | |
323 | val = unpack_long (type, valaddr + embedded_offset); | |
324 | for (i = 0; i < len; i++) | |
325 | { | |
326 | QUIT; | |
327 | if (val == TYPE_FIELD_BITPOS (type, i)) | |
328 | { | |
329 | break; | |
330 | } | |
331 | } | |
332 | if (i < len) | |
333 | { | |
334 | fputs_filtered (TYPE_FIELD_NAME (type, i), stream); | |
335 | } | |
336 | else | |
337 | { | |
338 | print_longest (stream, 'd', 0, val); | |
339 | } | |
340 | break; | |
341 | ||
4f2aea11 MK |
342 | case TYPE_CODE_FLAGS: |
343 | if (format) | |
344 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
345 | else | |
346 | val_print_type_code_flags (type, valaddr + embedded_offset, stream); | |
347 | break; | |
348 | ||
373a8247 PM |
349 | case TYPE_CODE_FUNC: |
350 | if (format) | |
351 | { | |
352 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
353 | break; | |
354 | } | |
355 | /* FIXME, we should consider, at least for ANSI C language, eliminating | |
356 | the distinction made between FUNCs and POINTERs to FUNCs. */ | |
357 | fprintf_filtered (stream, "{"); | |
358 | type_print (type, "", stream, -1); | |
359 | fprintf_filtered (stream, "} "); | |
360 | /* Try to print what function it points to, and its address. */ | |
361 | print_address_demangle (address, stream, demangle); | |
362 | break; | |
363 | ||
364 | case TYPE_CODE_BOOL: | |
365 | format = format ? format : output_format; | |
366 | if (format) | |
367 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
368 | else | |
369 | { | |
370 | val = unpack_long (type, valaddr + embedded_offset); | |
371 | if (val == 0) | |
372 | fputs_filtered ("false", stream); | |
373 | else if (val == 1) | |
374 | fputs_filtered ("true", stream); | |
375 | else | |
376 | { | |
377 | fputs_filtered ("true (", stream); | |
378 | fprintf_filtered (stream, "%ld)", (long int) val); | |
379 | } | |
380 | } | |
381 | break; | |
382 | ||
383 | case TYPE_CODE_RANGE: | |
384 | /* FIXME: create_range_type does not set the unsigned bit in a | |
385 | range type (I think it probably should copy it from the target | |
386 | type), so we won't print values which are too large to | |
387 | fit in a signed integer correctly. */ | |
388 | /* FIXME: Doesn't handle ranges of enums correctly. (Can't just | |
389 | print with the target type, though, because the size of our type | |
390 | and the target type might differ). */ | |
391 | /* FALLTHROUGH */ | |
392 | ||
393 | case TYPE_CODE_INT: | |
394 | format = format ? format : output_format; | |
395 | if (format) | |
396 | { | |
397 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
398 | } | |
399 | else | |
400 | { | |
401 | val_print_type_code_int (type, valaddr + embedded_offset, stream); | |
402 | } | |
403 | break; | |
404 | ||
405 | case TYPE_CODE_CHAR: | |
406 | format = format ? format : output_format; | |
407 | if (format) | |
408 | { | |
409 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
410 | } | |
411 | else | |
412 | { | |
413 | val = unpack_long (type, valaddr + embedded_offset); | |
414 | if (TYPE_UNSIGNED (type)) | |
415 | fprintf_filtered (stream, "%u", (unsigned int) val); | |
416 | else | |
417 | fprintf_filtered (stream, "%d", (int) val); | |
418 | fputs_filtered (" ", stream); | |
419 | LA_PRINT_CHAR ((unsigned char) val, stream); | |
420 | } | |
421 | break; | |
422 | ||
423 | case TYPE_CODE_FLT: | |
424 | if (format) | |
425 | { | |
426 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
427 | } | |
428 | else | |
429 | { | |
430 | print_floating (valaddr + embedded_offset, type, stream); | |
431 | } | |
432 | break; | |
433 | ||
434 | case TYPE_CODE_BITSTRING: | |
435 | case TYPE_CODE_SET: | |
436 | elttype = TYPE_INDEX_TYPE (type); | |
437 | CHECK_TYPEDEF (elttype); | |
74a9bb82 | 438 | if (TYPE_STUB (elttype)) |
373a8247 PM |
439 | { |
440 | fprintf_filtered (stream, "<incomplete type>"); | |
441 | gdb_flush (stream); | |
442 | break; | |
443 | } | |
444 | else | |
445 | { | |
446 | struct type *range = elttype; | |
447 | LONGEST low_bound, high_bound; | |
448 | int i; | |
449 | int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING; | |
450 | int need_comma = 0; | |
451 | ||
452 | if (is_bitstring) | |
453 | fputs_filtered ("B'", stream); | |
454 | else | |
455 | fputs_filtered ("[", stream); | |
456 | ||
457 | i = get_discrete_bounds (range, &low_bound, &high_bound); | |
458 | maybe_bad_bstring: | |
459 | if (i < 0) | |
460 | { | |
461 | fputs_filtered ("<error value>", stream); | |
462 | goto done; | |
463 | } | |
464 | ||
465 | for (i = low_bound; i <= high_bound; i++) | |
466 | { | |
467 | int element = value_bit_index (type, valaddr + embedded_offset, i); | |
468 | if (element < 0) | |
469 | { | |
470 | i = element; | |
471 | goto maybe_bad_bstring; | |
472 | } | |
473 | if (is_bitstring) | |
474 | fprintf_filtered (stream, "%d", element); | |
475 | else if (element) | |
476 | { | |
477 | if (need_comma) | |
478 | fputs_filtered (", ", stream); | |
479 | print_type_scalar (range, i, stream); | |
480 | need_comma = 1; | |
481 | ||
482 | if (i + 1 <= high_bound && value_bit_index (type, valaddr + embedded_offset, ++i)) | |
483 | { | |
484 | int j = i; | |
485 | fputs_filtered ("..", stream); | |
486 | while (i + 1 <= high_bound | |
487 | && value_bit_index (type, valaddr + embedded_offset, ++i)) | |
488 | j = i; | |
489 | print_type_scalar (range, j, stream); | |
490 | } | |
491 | } | |
492 | } | |
493 | done: | |
494 | if (is_bitstring) | |
495 | fputs_filtered ("'", stream); | |
496 | else | |
497 | fputs_filtered ("]", stream); | |
498 | } | |
499 | break; | |
500 | ||
501 | case TYPE_CODE_VOID: | |
502 | fprintf_filtered (stream, "void"); | |
503 | break; | |
504 | ||
505 | case TYPE_CODE_ERROR: | |
506 | fprintf_filtered (stream, "<error type>"); | |
507 | break; | |
508 | ||
509 | case TYPE_CODE_UNDEF: | |
510 | /* This happens (without TYPE_FLAG_STUB set) on systems which don't use | |
511 | dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar" | |
512 | and no complete type for struct foo in that file. */ | |
513 | fprintf_filtered (stream, "<incomplete type>"); | |
514 | break; | |
515 | ||
516 | default: | |
8a3fe4f8 | 517 | error (_("Invalid pascal type code %d in symbol table."), TYPE_CODE (type)); |
373a8247 PM |
518 | } |
519 | gdb_flush (stream); | |
520 | return (0); | |
521 | } | |
522 | \f | |
523 | int | |
6943961c | 524 | pascal_value_print (struct value *val, struct ui_file *stream, int format, |
fba45db2 | 525 | enum val_prettyprint pretty) |
373a8247 | 526 | { |
df407dfe | 527 | struct type *type = value_type (val); |
373a8247 PM |
528 | |
529 | /* If it is a pointer, indicate what it points to. | |
530 | ||
531 | Print type also if it is a reference. | |
532 | ||
533 | Object pascal: if it is a member pointer, we will take care | |
534 | of that when we print it. */ | |
535 | if (TYPE_CODE (type) == TYPE_CODE_PTR || | |
536 | TYPE_CODE (type) == TYPE_CODE_REF) | |
537 | { | |
538 | /* Hack: remove (char *) for char strings. Their | |
539 | type is indicated by the quoted string anyway. */ | |
540 | if (TYPE_CODE (type) == TYPE_CODE_PTR && | |
541 | TYPE_NAME (type) == NULL && | |
6314a349 AC |
542 | TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL |
543 | && strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0) | |
373a8247 PM |
544 | { |
545 | /* Print nothing */ | |
546 | } | |
547 | else | |
548 | { | |
549 | fprintf_filtered (stream, "("); | |
550 | type_print (type, "", stream, -1); | |
551 | fprintf_filtered (stream, ") "); | |
552 | } | |
553 | } | |
806048c6 | 554 | return common_val_print (val, stream, format, 1, 0, pretty); |
373a8247 PM |
555 | } |
556 | ||
557 | ||
558 | /****************************************************************************** | |
559 | Inserted from cp-valprint | |
560 | ******************************************************************************/ | |
561 | ||
562 | extern int vtblprint; /* Controls printing of vtbl's */ | |
563 | extern int objectprint; /* Controls looking up an object's derived type | |
564 | using what we find in its vtables. */ | |
565 | static int pascal_static_field_print; /* Controls printing of static fields. */ | |
920d2a44 AC |
566 | static void |
567 | show_pascal_static_field_print (struct ui_file *file, int from_tty, | |
568 | struct cmd_list_element *c, const char *value) | |
569 | { | |
570 | fprintf_filtered (file, _("Printing of pascal static members is %s.\n"), | |
571 | value); | |
572 | } | |
373a8247 PM |
573 | |
574 | static struct obstack dont_print_vb_obstack; | |
575 | static struct obstack dont_print_statmem_obstack; | |
576 | ||
806048c6 | 577 | static void pascal_object_print_static_field (struct value *, |
6943961c AC |
578 | struct ui_file *, int, int, |
579 | enum val_prettyprint); | |
373a8247 | 580 | |
fc1a4b47 | 581 | static void pascal_object_print_value (struct type *, const gdb_byte *, |
a2bd3dcd AC |
582 | CORE_ADDR, struct ui_file *, |
583 | int, int, enum val_prettyprint, | |
584 | struct type **); | |
373a8247 | 585 | |
373a8247 PM |
586 | /* It was changed to this after 2.4.5. */ |
587 | const char pascal_vtbl_ptr_name[] = | |
588 | {'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; | |
589 | ||
590 | /* Return truth value for assertion that TYPE is of the type | |
591 | "pointer to virtual function". */ | |
592 | ||
593 | int | |
fba45db2 | 594 | pascal_object_is_vtbl_ptr_type (struct type *type) |
373a8247 PM |
595 | { |
596 | char *typename = type_name_no_tag (type); | |
597 | ||
598 | return (typename != NULL | |
6314a349 | 599 | && strcmp (typename, pascal_vtbl_ptr_name) == 0); |
373a8247 PM |
600 | } |
601 | ||
602 | /* Return truth value for the assertion that TYPE is of the type | |
603 | "pointer to virtual function table". */ | |
604 | ||
605 | int | |
fba45db2 | 606 | pascal_object_is_vtbl_member (struct type *type) |
373a8247 PM |
607 | { |
608 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
609 | { | |
610 | type = TYPE_TARGET_TYPE (type); | |
611 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
612 | { | |
613 | type = TYPE_TARGET_TYPE (type); | |
614 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */ | |
615 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */ | |
616 | { | |
617 | /* Virtual functions tables are full of pointers | |
618 | to virtual functions. */ | |
619 | return pascal_object_is_vtbl_ptr_type (type); | |
620 | } | |
621 | } | |
622 | } | |
623 | return 0; | |
624 | } | |
625 | ||
a2bd3dcd AC |
626 | /* Mutually recursive subroutines of pascal_object_print_value and |
627 | c_val_print to print out a structure's fields: | |
628 | pascal_object_print_value_fields and pascal_object_print_value. | |
373a8247 PM |
629 | |
630 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the | |
631 | same meanings as in pascal_object_print_value and c_val_print. | |
632 | ||
633 | DONT_PRINT is an array of baseclass types that we | |
634 | should not print, or zero if called from top level. */ | |
635 | ||
636 | void | |
fc1a4b47 | 637 | pascal_object_print_value_fields (struct type *type, const gdb_byte *valaddr, |
fba45db2 KB |
638 | CORE_ADDR address, struct ui_file *stream, |
639 | int format, int recurse, | |
640 | enum val_prettyprint pretty, | |
641 | struct type **dont_print_vb, | |
642 | int dont_print_statmem) | |
373a8247 PM |
643 | { |
644 | int i, len, n_baseclasses; | |
373a8247 PM |
645 | char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack); |
646 | ||
647 | CHECK_TYPEDEF (type); | |
648 | ||
649 | fprintf_filtered (stream, "{"); | |
650 | len = TYPE_NFIELDS (type); | |
651 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
652 | ||
653 | /* Print out baseclasses such that we don't print | |
654 | duplicates of virtual baseclasses. */ | |
655 | if (n_baseclasses > 0) | |
656 | pascal_object_print_value (type, valaddr, address, stream, | |
657 | format, recurse + 1, pretty, dont_print_vb); | |
658 | ||
659 | if (!len && n_baseclasses == 1) | |
660 | fprintf_filtered (stream, "<No data fields>"); | |
661 | else | |
662 | { | |
c1b6e682 | 663 | struct obstack tmp_obstack = dont_print_statmem_obstack; |
373a8247 PM |
664 | int fields_seen = 0; |
665 | ||
666 | if (dont_print_statmem == 0) | |
667 | { | |
668 | /* If we're at top level, carve out a completely fresh | |
669 | chunk of the obstack and use that until this particular | |
670 | invocation returns. */ | |
373a8247 PM |
671 | obstack_finish (&dont_print_statmem_obstack); |
672 | } | |
673 | ||
674 | for (i = n_baseclasses; i < len; i++) | |
675 | { | |
676 | /* If requested, skip printing of static fields. */ | |
677 | if (!pascal_static_field_print && TYPE_FIELD_STATIC (type, i)) | |
678 | continue; | |
679 | if (fields_seen) | |
680 | fprintf_filtered (stream, ", "); | |
681 | else if (n_baseclasses > 0) | |
682 | { | |
683 | if (pretty) | |
684 | { | |
685 | fprintf_filtered (stream, "\n"); | |
686 | print_spaces_filtered (2 + 2 * recurse, stream); | |
687 | fputs_filtered ("members of ", stream); | |
688 | fputs_filtered (type_name_no_tag (type), stream); | |
689 | fputs_filtered (": ", stream); | |
690 | } | |
691 | } | |
692 | fields_seen = 1; | |
693 | ||
694 | if (pretty) | |
695 | { | |
696 | fprintf_filtered (stream, "\n"); | |
697 | print_spaces_filtered (2 + 2 * recurse, stream); | |
698 | } | |
699 | else | |
700 | { | |
701 | wrap_here (n_spaces (2 + 2 * recurse)); | |
702 | } | |
703 | if (inspect_it) | |
704 | { | |
705 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR) | |
706 | fputs_filtered ("\"( ptr \"", stream); | |
707 | else | |
708 | fputs_filtered ("\"( nodef \"", stream); | |
709 | if (TYPE_FIELD_STATIC (type, i)) | |
710 | fputs_filtered ("static ", stream); | |
711 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
712 | language_cplus, | |
713 | DMGL_PARAMS | DMGL_ANSI); | |
714 | fputs_filtered ("\" \"", stream); | |
715 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
716 | language_cplus, | |
717 | DMGL_PARAMS | DMGL_ANSI); | |
718 | fputs_filtered ("\") \"", stream); | |
719 | } | |
720 | else | |
721 | { | |
722 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
723 | ||
724 | if (TYPE_FIELD_STATIC (type, i)) | |
725 | fputs_filtered ("static ", stream); | |
726 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
727 | language_cplus, | |
728 | DMGL_PARAMS | DMGL_ANSI); | |
729 | annotate_field_name_end (); | |
730 | fputs_filtered (" = ", stream); | |
731 | annotate_field_value (); | |
732 | } | |
733 | ||
734 | if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i)) | |
735 | { | |
6943961c | 736 | struct value *v; |
373a8247 PM |
737 | |
738 | /* Bitfields require special handling, especially due to byte | |
739 | order problems. */ | |
740 | if (TYPE_FIELD_IGNORE (type, i)) | |
741 | { | |
742 | fputs_filtered ("<optimized out or zero length>", stream); | |
743 | } | |
744 | else | |
745 | { | |
746 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), | |
747 | unpack_field_as_long (type, valaddr, i)); | |
748 | ||
806048c6 | 749 | common_val_print (v, stream, format, 0, recurse + 1, pretty); |
373a8247 PM |
750 | } |
751 | } | |
752 | else | |
753 | { | |
754 | if (TYPE_FIELD_IGNORE (type, i)) | |
755 | { | |
756 | fputs_filtered ("<optimized out or zero length>", stream); | |
757 | } | |
758 | else if (TYPE_FIELD_STATIC (type, i)) | |
759 | { | |
6943961c AC |
760 | /* struct value *v = value_static_field (type, i); v4.17 specific */ |
761 | struct value *v; | |
373a8247 PM |
762 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), |
763 | unpack_field_as_long (type, valaddr, i)); | |
764 | ||
765 | if (v == NULL) | |
766 | fputs_filtered ("<optimized out>", stream); | |
767 | else | |
806048c6 DJ |
768 | pascal_object_print_static_field (v, stream, format, |
769 | recurse + 1, pretty); | |
373a8247 PM |
770 | } |
771 | else | |
772 | { | |
773 | /* val_print (TYPE_FIELD_TYPE (type, i), | |
774 | valaddr + TYPE_FIELD_BITPOS (type, i) / 8, | |
775 | address + TYPE_FIELD_BITPOS (type, i) / 8, 0, | |
776 | stream, format, 0, recurse + 1, pretty); */ | |
777 | val_print (TYPE_FIELD_TYPE (type, i), | |
778 | valaddr, TYPE_FIELD_BITPOS (type, i) / 8, | |
779 | address + TYPE_FIELD_BITPOS (type, i) / 8, | |
780 | stream, format, 0, recurse + 1, pretty); | |
781 | } | |
782 | } | |
783 | annotate_field_end (); | |
784 | } | |
785 | ||
786 | if (dont_print_statmem == 0) | |
787 | { | |
788 | /* Free the space used to deal with the printing | |
789 | of the members from top level. */ | |
790 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
791 | dont_print_statmem_obstack = tmp_obstack; | |
792 | } | |
793 | ||
794 | if (pretty) | |
795 | { | |
796 | fprintf_filtered (stream, "\n"); | |
797 | print_spaces_filtered (2 * recurse, stream); | |
798 | } | |
799 | } | |
800 | fprintf_filtered (stream, "}"); | |
801 | } | |
802 | ||
803 | /* Special val_print routine to avoid printing multiple copies of virtual | |
804 | baseclasses. */ | |
805 | ||
7080f20f | 806 | static void |
fc1a4b47 | 807 | pascal_object_print_value (struct type *type, const gdb_byte *valaddr, |
a2bd3dcd AC |
808 | CORE_ADDR address, struct ui_file *stream, |
809 | int format, int recurse, | |
fba45db2 KB |
810 | enum val_prettyprint pretty, |
811 | struct type **dont_print_vb) | |
373a8247 | 812 | { |
373a8247 PM |
813 | struct type **last_dont_print |
814 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); | |
c1b6e682 | 815 | struct obstack tmp_obstack = dont_print_vb_obstack; |
373a8247 PM |
816 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); |
817 | ||
818 | if (dont_print_vb == 0) | |
819 | { | |
820 | /* If we're at top level, carve out a completely fresh | |
821 | chunk of the obstack and use that until this particular | |
822 | invocation returns. */ | |
373a8247 PM |
823 | /* Bump up the high-water mark. Now alpha is omega. */ |
824 | obstack_finish (&dont_print_vb_obstack); | |
825 | } | |
826 | ||
827 | for (i = 0; i < n_baseclasses; i++) | |
828 | { | |
829 | int boffset; | |
830 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); | |
4a52dc15 | 831 | char *basename = type_name_no_tag (baseclass); |
fc1a4b47 | 832 | const gdb_byte *base_valaddr; |
373a8247 PM |
833 | |
834 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
835 | { | |
836 | struct type **first_dont_print | |
837 | = (struct type **) obstack_base (&dont_print_vb_obstack); | |
838 | ||
839 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) | |
840 | - first_dont_print; | |
841 | ||
842 | while (--j >= 0) | |
843 | if (baseclass == first_dont_print[j]) | |
844 | goto flush_it; | |
845 | ||
846 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
847 | } | |
848 | ||
849 | boffset = baseclass_offset (type, i, valaddr, address); | |
850 | ||
851 | if (pretty) | |
852 | { | |
853 | fprintf_filtered (stream, "\n"); | |
854 | print_spaces_filtered (2 * recurse, stream); | |
855 | } | |
856 | fputs_filtered ("<", stream); | |
857 | /* Not sure what the best notation is in the case where there is no | |
858 | baseclass name. */ | |
859 | ||
860 | fputs_filtered (basename ? basename : "", stream); | |
861 | fputs_filtered ("> = ", stream); | |
862 | ||
863 | /* The virtual base class pointer might have been clobbered by the | |
864 | user program. Make sure that it still points to a valid memory | |
865 | location. */ | |
866 | ||
867 | if (boffset != -1 && (boffset < 0 || boffset >= TYPE_LENGTH (type))) | |
868 | { | |
34c0bd93 | 869 | /* FIXME (alloc): not safe is baseclass is really really big. */ |
fc1a4b47 | 870 | gdb_byte *buf = alloca (TYPE_LENGTH (baseclass)); |
a2bd3dcd AC |
871 | base_valaddr = buf; |
872 | if (target_read_memory (address + boffset, buf, | |
373a8247 PM |
873 | TYPE_LENGTH (baseclass)) != 0) |
874 | boffset = -1; | |
875 | } | |
876 | else | |
877 | base_valaddr = valaddr + boffset; | |
878 | ||
879 | if (boffset == -1) | |
880 | fprintf_filtered (stream, "<invalid address>"); | |
881 | else | |
882 | pascal_object_print_value_fields (baseclass, base_valaddr, address + boffset, | |
883 | stream, format, recurse, pretty, | |
884 | (struct type **) obstack_base (&dont_print_vb_obstack), | |
885 | 0); | |
886 | fputs_filtered (", ", stream); | |
887 | ||
888 | flush_it: | |
889 | ; | |
890 | } | |
891 | ||
892 | if (dont_print_vb == 0) | |
893 | { | |
894 | /* Free the space used to deal with the printing | |
895 | of this type from top level. */ | |
896 | obstack_free (&dont_print_vb_obstack, last_dont_print); | |
897 | /* Reset watermark so that we can continue protecting | |
898 | ourselves from whatever we were protecting ourselves. */ | |
899 | dont_print_vb_obstack = tmp_obstack; | |
900 | } | |
901 | } | |
902 | ||
903 | /* Print value of a static member. | |
904 | To avoid infinite recursion when printing a class that contains | |
905 | a static instance of the class, we keep the addresses of all printed | |
906 | static member classes in an obstack and refuse to print them more | |
907 | than once. | |
908 | ||
806048c6 | 909 | VAL contains the value to print, STREAM, RECURSE, and PRETTY |
373a8247 PM |
910 | have the same meanings as in c_val_print. */ |
911 | ||
912 | static void | |
806048c6 | 913 | pascal_object_print_static_field (struct value *val, |
fba45db2 KB |
914 | struct ui_file *stream, int format, |
915 | int recurse, enum val_prettyprint pretty) | |
373a8247 | 916 | { |
806048c6 DJ |
917 | struct type *type = value_type (val); |
918 | ||
373a8247 PM |
919 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
920 | { | |
921 | CORE_ADDR *first_dont_print; | |
922 | int i; | |
923 | ||
924 | first_dont_print | |
925 | = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); | |
926 | i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) | |
927 | - first_dont_print; | |
928 | ||
929 | while (--i >= 0) | |
930 | { | |
931 | if (VALUE_ADDRESS (val) == first_dont_print[i]) | |
932 | { | |
933 | fputs_filtered ("<same as static member of an already seen type>", | |
934 | stream); | |
935 | return; | |
936 | } | |
937 | } | |
938 | ||
939 | obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val), | |
940 | sizeof (CORE_ADDR)); | |
941 | ||
942 | CHECK_TYPEDEF (type); | |
0fd88904 | 943 | pascal_object_print_value_fields (type, value_contents (val), VALUE_ADDRESS (val), |
373a8247 PM |
944 | stream, format, recurse, pretty, NULL, 1); |
945 | return; | |
946 | } | |
806048c6 | 947 | common_val_print (val, stream, format, 0, recurse, pretty); |
373a8247 PM |
948 | } |
949 | ||
b9362cc7 | 950 | extern initialize_file_ftype _initialize_pascal_valprint; /* -Wmissing-prototypes */ |
373a8247 PM |
951 | |
952 | void | |
fba45db2 | 953 | _initialize_pascal_valprint (void) |
373a8247 | 954 | { |
5bf193a2 AC |
955 | add_setshow_boolean_cmd ("pascal_static-members", class_support, |
956 | &pascal_static_field_print, _("\ | |
957 | Set printing of pascal static members."), _("\ | |
958 | Show printing of pascal static members."), NULL, | |
959 | NULL, | |
920d2a44 | 960 | show_pascal_static_field_print, |
5bf193a2 | 961 | &setprintlist, &showprintlist); |
373a8247 PM |
962 | /* Turn on printing of static fields. */ |
963 | pascal_static_field_print = 1; | |
964 | ||
965 | } |