Commit | Line | Data |
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c906108c SS |
1 | /* Support for printing C++ values for GDB, the GNU debugger. |
2 | Copyright 1986, 1988, 1989, 1991, 1994, 1995, 1996 | |
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 | #include "defs.h" | |
22 | #include "obstack.h" | |
23 | #include "symtab.h" | |
24 | #include "gdbtypes.h" | |
25 | #include "expression.h" | |
26 | #include "value.h" | |
27 | #include "command.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "demangle.h" | |
30 | #include "annotate.h" | |
31 | #include "gdb_string.h" | |
32 | #include "c-lang.h" | |
33 | #include "target.h" | |
34 | ||
35 | /* Indication of presence of HP-compiled object files */ | |
36 | extern int hp_som_som_object_present; /* defined in symtab.c */ | |
37 | ||
38 | ||
39 | int vtblprint; /* Controls printing of vtbl's */ | |
40 | int objectprint; /* Controls looking up an object's derived type | |
41 | using what we find in its vtables. */ | |
42 | int static_field_print; /* Controls printing of static fields. */ | |
43 | ||
44 | static struct obstack dont_print_vb_obstack; | |
45 | static struct obstack dont_print_statmem_obstack; | |
46 | ||
47 | static void | |
48 | cp_print_static_field PARAMS ((struct type *, value_ptr, GDB_FILE *, int, int, | |
49 | enum val_prettyprint)); | |
50 | ||
51 | static void | |
52 | cp_print_value PARAMS ((struct type *, struct type *, char *, int, CORE_ADDR, GDB_FILE *, | |
53 | int, int, enum val_prettyprint, struct type **)); | |
54 | ||
55 | static void | |
56 | cp_print_hpacc_virtual_table_entries PARAMS ((struct type *, int *, value_ptr, GDB_FILE *, | |
57 | int, int, enum val_prettyprint)); | |
58 | ||
59 | ||
60 | void | |
61 | cp_print_class_method (valaddr, type, stream) | |
62 | char *valaddr; | |
63 | struct type *type; | |
64 | GDB_FILE *stream; | |
65 | { | |
66 | struct type *domain; | |
67 | struct fn_field *f = NULL; | |
68 | int j = 0; | |
69 | int len2; | |
70 | int offset; | |
71 | char *kind = ""; | |
72 | CORE_ADDR addr; | |
73 | struct symbol *sym; | |
74 | unsigned len; | |
75 | unsigned int i; | |
76 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); | |
77 | ||
78 | domain = TYPE_DOMAIN_TYPE (target_type); | |
79 | if (domain == (struct type *)NULL) | |
80 | { | |
81 | fprintf_filtered (stream, "<unknown>"); | |
82 | return; | |
83 | } | |
84 | addr = unpack_pointer (lookup_pointer_type (builtin_type_void), valaddr); | |
85 | if (METHOD_PTR_IS_VIRTUAL (addr)) | |
86 | { | |
87 | offset = METHOD_PTR_TO_VOFFSET (addr); | |
88 | len = TYPE_NFN_FIELDS (domain); | |
89 | for (i = 0; i < len; i++) | |
90 | { | |
91 | f = TYPE_FN_FIELDLIST1 (domain, i); | |
92 | len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); | |
93 | ||
94 | for (j = 0; j < len2; j++) | |
95 | { | |
96 | QUIT; | |
97 | if (TYPE_FN_FIELD_VOFFSET (f, j) == offset) | |
98 | { | |
99 | if (TYPE_FN_FIELD_STUB (f, j)) | |
100 | check_stub_method (domain, i, j); | |
101 | kind = "virtual "; | |
102 | goto common; | |
103 | } | |
104 | } | |
105 | } | |
106 | } | |
107 | else | |
108 | { | |
109 | sym = find_pc_function (addr); | |
110 | if (sym == 0) | |
111 | { | |
112 | /* 1997-08-01 Currently unsupported with HP aCC */ | |
113 | if (hp_som_som_object_present) | |
114 | { | |
115 | fputs_filtered ("?? <not supported with HP aCC>", stream); | |
116 | return; | |
117 | } | |
118 | error ("invalid pointer to member function"); | |
119 | } | |
120 | len = TYPE_NFN_FIELDS (domain); | |
121 | for (i = 0; i < len; i++) | |
122 | { | |
123 | f = TYPE_FN_FIELDLIST1 (domain, i); | |
124 | len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); | |
125 | ||
126 | for (j = 0; j < len2; j++) | |
127 | { | |
128 | QUIT; | |
129 | if (TYPE_FN_FIELD_STUB (f, j)) | |
130 | check_stub_method (domain, i, j); | |
131 | if (STREQ (SYMBOL_NAME (sym), TYPE_FN_FIELD_PHYSNAME (f, j))) | |
132 | { | |
133 | goto common; | |
134 | } | |
135 | } | |
136 | } | |
137 | } | |
138 | common: | |
139 | if (i < len) | |
140 | { | |
141 | char *demangled_name; | |
142 | ||
143 | fprintf_filtered (stream, "&"); | |
144 | fprintf_filtered (stream, kind); | |
145 | demangled_name = cplus_demangle (TYPE_FN_FIELD_PHYSNAME (f, j), | |
146 | DMGL_ANSI | DMGL_PARAMS); | |
147 | if (demangled_name == NULL) | |
148 | fprintf_filtered (stream, "<badly mangled name %s>", | |
149 | TYPE_FN_FIELD_PHYSNAME (f, j)); | |
150 | else | |
151 | { | |
152 | fputs_filtered (demangled_name, stream); | |
153 | free (demangled_name); | |
154 | } | |
155 | } | |
156 | else | |
157 | { | |
158 | fprintf_filtered (stream, "("); | |
159 | type_print (type, "", stream, -1); | |
160 | fprintf_filtered (stream, ") %d", (int) addr >> 3); | |
161 | } | |
162 | } | |
163 | ||
164 | /* This was what it was for gcc 2.4.5 and earlier. */ | |
165 | static const char vtbl_ptr_name_old[] = | |
166 | { CPLUS_MARKER,'v','t','b','l','_','p','t','r','_','t','y','p','e', 0 }; | |
167 | /* It was changed to this after 2.4.5. */ | |
168 | const char vtbl_ptr_name[] = | |
169 | { '_','_','v','t','b','l','_','p','t','r','_','t','y','p','e', 0 }; | |
170 | ||
171 | /* HP aCC uses different names */ | |
172 | const char hpacc_vtbl_ptr_name[] = | |
173 | { '_', '_', 'v', 'f', 'p', 0 }; | |
174 | const char hpacc_vtbl_ptr_type_name[] = | |
175 | { '_', '_', 'v', 'f', 't', 'y', 'p', 0 }; | |
176 | ||
177 | ||
178 | /* Return truth value for assertion that TYPE is of the type | |
179 | "pointer to virtual function". */ | |
180 | ||
181 | int | |
182 | cp_is_vtbl_ptr_type(type) | |
183 | struct type *type; | |
184 | { | |
185 | char *typename = type_name_no_tag (type); | |
186 | ||
187 | return (typename != NULL | |
188 | && (STREQ (typename, vtbl_ptr_name) | |
189 | || STREQ (typename, vtbl_ptr_name_old))); | |
190 | } | |
191 | ||
192 | /* Return truth value for the assertion that TYPE is of the type | |
193 | "pointer to virtual function table". */ | |
194 | ||
195 | int | |
196 | cp_is_vtbl_member(type) | |
197 | struct type *type; | |
198 | { | |
199 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
200 | { | |
201 | type = TYPE_TARGET_TYPE (type); | |
202 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
203 | { | |
204 | type = TYPE_TARGET_TYPE (type); | |
205 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */ | |
206 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */ | |
207 | { | |
208 | /* Virtual functions tables are full of pointers | |
209 | to virtual functions. */ | |
210 | return cp_is_vtbl_ptr_type (type); | |
211 | } | |
212 | } | |
213 | } | |
214 | return 0; | |
215 | } | |
216 | ||
217 | /* Mutually recursive subroutines of cp_print_value and c_val_print to | |
218 | print out a structure's fields: cp_print_value_fields and cp_print_value. | |
219 | ||
220 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the | |
221 | same meanings as in cp_print_value and c_val_print. | |
222 | ||
223 | 2nd argument REAL_TYPE is used to carry over the type of the derived | |
224 | class across the recursion to base classes. | |
225 | ||
226 | DONT_PRINT is an array of baseclass types that we | |
227 | should not print, or zero if called from top level. */ | |
228 | ||
229 | void | |
230 | cp_print_value_fields (type, real_type, valaddr, offset, address, stream, format, recurse, pretty, | |
231 | dont_print_vb, dont_print_statmem) | |
232 | struct type *type; | |
233 | struct type *real_type; | |
234 | char *valaddr; | |
235 | int offset; | |
236 | CORE_ADDR address; | |
237 | GDB_FILE *stream; | |
238 | int format; | |
239 | int recurse; | |
240 | enum val_prettyprint pretty; | |
241 | struct type **dont_print_vb; | |
242 | int dont_print_statmem; | |
243 | { | |
244 | int i, len, n_baseclasses; | |
245 | struct obstack tmp_obstack; | |
246 | char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack); | |
247 | int fields_seen = 0; | |
248 | ||
249 | CHECK_TYPEDEF (type); | |
250 | ||
251 | fprintf_filtered (stream, "{"); | |
252 | len = TYPE_NFIELDS (type); | |
253 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
254 | ||
255 | /* First, print out baseclasses such that we don't print | |
256 | duplicates of virtual baseclasses. */ | |
257 | ||
258 | if (n_baseclasses > 0) | |
259 | cp_print_value (type, real_type, valaddr, offset, address, stream, | |
260 | format, recurse+1, pretty, dont_print_vb); | |
261 | ||
262 | /* Second, print out data fields */ | |
263 | ||
264 | /* If there are no data fields, or if the only field is the | |
265 | * vtbl pointer, skip this part */ | |
266 | if ((len == n_baseclasses) || | |
267 | ((len - n_baseclasses == 1) && | |
268 | TYPE_HAS_VTABLE(type) && | |
269 | STREQN(TYPE_FIELD_NAME (type, n_baseclasses), hpacc_vtbl_ptr_name, 5)) || | |
270 | !len) | |
271 | fprintf_filtered (stream, "<No data fields>"); | |
272 | else | |
273 | { | |
274 | extern int inspect_it; | |
275 | ||
276 | if (dont_print_statmem == 0) | |
277 | { | |
278 | /* If we're at top level, carve out a completely fresh | |
279 | chunk of the obstack and use that until this particular | |
280 | invocation returns. */ | |
281 | tmp_obstack = dont_print_statmem_obstack; | |
282 | obstack_finish (&dont_print_statmem_obstack); | |
283 | } | |
284 | ||
285 | for (i = n_baseclasses; i < len; i++) | |
286 | { | |
287 | /* If requested, skip printing of static fields. */ | |
288 | if (!static_field_print && TYPE_FIELD_STATIC (type, i)) | |
289 | continue; | |
290 | ||
291 | /* If a vtable pointer appears, we'll print it out later */ | |
292 | if (TYPE_HAS_VTABLE(type) && STREQN(TYPE_FIELD_NAME (type, i), hpacc_vtbl_ptr_name, 5)) | |
293 | continue; | |
294 | ||
295 | if (fields_seen) | |
296 | fprintf_filtered (stream, ", "); | |
297 | else if (n_baseclasses > 0) | |
298 | { | |
299 | if (pretty) | |
300 | { | |
301 | fprintf_filtered (stream, "\n"); | |
302 | print_spaces_filtered (2 + 2 * recurse, stream); | |
303 | fputs_filtered ("members of ", stream); | |
304 | fputs_filtered (type_name_no_tag (type), stream); | |
305 | fputs_filtered (": ", stream); | |
306 | } | |
307 | } | |
308 | fields_seen = 1; | |
309 | ||
310 | if (pretty) | |
311 | { | |
312 | fprintf_filtered (stream, "\n"); | |
313 | print_spaces_filtered (2 + 2 * recurse, stream); | |
314 | } | |
315 | else | |
316 | { | |
317 | wrap_here (n_spaces (2 + 2 * recurse)); | |
318 | } | |
319 | if (inspect_it) | |
320 | { | |
321 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR) | |
322 | fputs_filtered ("\"( ptr \"", stream); | |
323 | else | |
324 | fputs_filtered ("\"( nodef \"", stream); | |
325 | if (TYPE_FIELD_STATIC (type, i)) | |
326 | fputs_filtered ("static ", stream); | |
327 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
328 | language_cplus, | |
329 | DMGL_PARAMS | DMGL_ANSI); | |
330 | fputs_filtered ("\" \"", stream); | |
331 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
332 | language_cplus, | |
333 | DMGL_PARAMS | DMGL_ANSI); | |
334 | fputs_filtered ("\") \"", stream); | |
335 | } | |
336 | else | |
337 | { | |
338 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
339 | ||
340 | if (TYPE_FIELD_STATIC (type, i)) | |
341 | fputs_filtered ("static ", stream); | |
342 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
343 | language_cplus, | |
344 | DMGL_PARAMS | DMGL_ANSI); | |
345 | annotate_field_name_end (); | |
346 | /* do not print leading '=' in case of anonymous unions */ | |
347 | if (strcmp (TYPE_FIELD_NAME (type, i), "")) | |
348 | fputs_filtered (" = ", stream); | |
349 | annotate_field_value (); | |
350 | } | |
351 | ||
352 | if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i)) | |
353 | { | |
354 | value_ptr v; | |
355 | ||
356 | /* Bitfields require special handling, especially due to byte | |
357 | order problems. */ | |
358 | if (TYPE_FIELD_IGNORE (type, i)) | |
359 | { | |
360 | fputs_filtered ("<optimized out or zero length>", stream); | |
361 | } | |
362 | else | |
363 | { | |
364 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), | |
365 | unpack_field_as_long (type, valaddr + offset, i)); | |
366 | ||
367 | val_print (TYPE_FIELD_TYPE(type, i), VALUE_CONTENTS (v), 0, 0, | |
368 | stream, format, 0, recurse + 1, pretty); | |
369 | } | |
370 | } | |
371 | else | |
372 | { | |
373 | if (TYPE_FIELD_IGNORE (type, i)) | |
374 | { | |
375 | fputs_filtered ("<optimized out or zero length>", stream); | |
376 | } | |
377 | else if (TYPE_FIELD_STATIC (type, i)) | |
378 | { | |
379 | value_ptr v = value_static_field (type, i); | |
380 | if (v == NULL) | |
381 | fputs_filtered ("<optimized out>", stream); | |
382 | else | |
383 | cp_print_static_field (TYPE_FIELD_TYPE (type, i), v, | |
384 | stream, format, recurse + 1, | |
385 | pretty); | |
386 | } | |
387 | else | |
388 | { | |
389 | val_print (TYPE_FIELD_TYPE (type, i), | |
390 | valaddr, offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
391 | address + TYPE_FIELD_BITPOS (type, i) / 8, | |
392 | stream, format, 0, recurse + 1, pretty); | |
393 | } | |
394 | } | |
395 | annotate_field_end (); | |
396 | } | |
397 | ||
398 | if (dont_print_statmem == 0) | |
399 | { | |
400 | /* Free the space used to deal with the printing | |
401 | of the members from top level. */ | |
402 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
403 | dont_print_statmem_obstack = tmp_obstack; | |
404 | } | |
405 | ||
406 | if (pretty) | |
407 | { | |
408 | fprintf_filtered (stream, "\n"); | |
409 | print_spaces_filtered (2 * recurse, stream); | |
410 | } | |
411 | } /* if there are data fields */ | |
412 | /* Now print out the virtual table pointer if there is one */ | |
413 | if (TYPE_HAS_VTABLE(type) && STREQN(TYPE_FIELD_NAME (type, n_baseclasses), hpacc_vtbl_ptr_name, 5)) | |
414 | { | |
415 | value_ptr v; | |
416 | /* First get the virtual table pointer and print it out*/ | |
417 | ||
418 | #if 0 | |
419 | fputs_filtered ("__vfp = ", stream); | |
420 | #endif | |
421 | ||
422 | fputs_filtered (", Virtual table at ", stream); | |
423 | ||
424 | /* pai: FIXME 32x64 problem? */ | |
425 | /* Not sure what the best notation is in the case where there is no | |
426 | baseclass name. */ | |
427 | v = value_from_longest (lookup_pointer_type (builtin_type_unsigned_long), | |
428 | * (unsigned long *) (valaddr + offset)); | |
429 | ||
430 | val_print (VALUE_TYPE (v), VALUE_CONTENTS (v), 0, 0, | |
431 | stream, format, 0, recurse + 1, pretty); | |
432 | fields_seen = 1; | |
433 | ||
434 | if (vtblprint) | |
435 | { | |
436 | /* Print out function pointers in vtable. */ | |
437 | ||
438 | /* FIXME: then-clause is for non-RRBC layout of virtual | |
439 | * table. The RRBC case in the else-clause is yet to be | |
440 | * implemented. The if (1) below should be changed to a | |
441 | * test for whether the executable we have was compiled | |
442 | * with a version of HP aCC that doesn't have RRBC | |
443 | * support. */ | |
444 | ||
445 | if (1) | |
446 | { | |
447 | /* no RRBC support; function pointers embedded directly in vtable */ | |
448 | ||
449 | int vfuncs = count_virtual_fns (real_type); | |
450 | ||
451 | fputs_filtered (" {", stream); | |
452 | ||
453 | /* FIXME : doesn't work at present */ | |
454 | #if 0 | |
455 | fprintf_filtered (stream, "%d entr%s: ", vfuncs, vfuncs == 1 ? "y" : "ies"); | |
456 | #else | |
457 | fputs_filtered ("not implemented", stream); | |
458 | ||
459 | ||
460 | #endif | |
461 | ||
462 | /* recursive function that prints all virtual function entries */ | |
463 | #if 0 | |
464 | cp_print_hpacc_virtual_table_entries (real_type, &vfuncs, v, stream, format, recurse, pretty); | |
465 | #endif | |
466 | fputs_filtered ("}", stream); | |
467 | } /* non-RRBC case */ | |
468 | else | |
469 | { | |
470 | /* FIXME -- seem comments above */ | |
471 | /* RRBC support present; function pointers are found | |
472 | * by indirection through the class segment entries. */ | |
473 | ||
474 | ||
475 | } /* RRBC case */ | |
476 | } /* if vtblprint */ | |
477 | ||
478 | if (pretty) | |
479 | { | |
480 | fprintf_filtered (stream, "\n"); | |
481 | print_spaces_filtered (2 * recurse, stream); | |
482 | } | |
483 | ||
484 | } /* if vtable exists */ | |
485 | ||
486 | fprintf_filtered (stream, "}"); | |
487 | } | |
488 | ||
489 | /* Special val_print routine to avoid printing multiple copies of virtual | |
490 | baseclasses. */ | |
491 | ||
492 | static void | |
493 | cp_print_value (type, real_type, valaddr, offset, address, stream, format, recurse, pretty, | |
494 | dont_print_vb) | |
495 | struct type *type; | |
496 | struct type *real_type; | |
497 | char *valaddr; | |
498 | int offset; | |
499 | CORE_ADDR address; | |
500 | GDB_FILE *stream; | |
501 | int format; | |
502 | int recurse; | |
503 | enum val_prettyprint pretty; | |
504 | struct type **dont_print_vb; | |
505 | { | |
506 | struct obstack tmp_obstack; | |
507 | struct type **last_dont_print | |
508 | = (struct type **)obstack_next_free (&dont_print_vb_obstack); | |
509 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); | |
510 | ||
511 | if (dont_print_vb == 0) | |
512 | { | |
513 | /* If we're at top level, carve out a completely fresh | |
514 | chunk of the obstack and use that until this particular | |
515 | invocation returns. */ | |
516 | tmp_obstack = dont_print_vb_obstack; | |
517 | /* Bump up the high-water mark. Now alpha is omega. */ | |
518 | obstack_finish (&dont_print_vb_obstack); | |
519 | } | |
520 | ||
521 | for (i = 0; i < n_baseclasses; i++) | |
522 | { | |
523 | int boffset; | |
524 | int skip; | |
525 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); | |
526 | char *basename = TYPE_NAME (baseclass); | |
527 | char *base_valaddr; | |
528 | ||
529 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
530 | { | |
531 | struct type **first_dont_print | |
532 | = (struct type **)obstack_base (&dont_print_vb_obstack); | |
533 | ||
534 | int j = (struct type **)obstack_next_free (&dont_print_vb_obstack) | |
535 | - first_dont_print; | |
536 | ||
537 | while (--j >= 0) | |
538 | if (baseclass == first_dont_print[j]) | |
539 | goto flush_it; | |
540 | ||
541 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
542 | } | |
543 | ||
544 | if (TYPE_HAS_VTABLE (type) && BASETYPE_VIA_VIRTUAL (type, i)) | |
545 | { | |
546 | /* Assume HP/Taligent runtime convention */ | |
547 | find_rt_vbase_offset (type, TYPE_BASECLASS (type, i), | |
548 | valaddr, offset, &boffset, &skip); | |
549 | if (skip >= 0) | |
550 | error ("Virtual base class offset not found from vtable while printing"); | |
551 | base_valaddr = valaddr; | |
552 | } | |
553 | else | |
554 | { | |
555 | boffset = baseclass_offset (type, i , valaddr + offset, address + offset); | |
556 | skip = ((boffset == -1) || (boffset+offset) < 0 ) ? 1 : -1; | |
557 | ||
558 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
559 | { | |
560 | /* The virtual base class pointer might have been clobbered by the | |
561 | user program. Make sure that it still points to a valid memory | |
562 | location. */ | |
563 | ||
564 | if (boffset != -1 && ((boffset+offset) < 0 || (boffset+offset) >= TYPE_LENGTH (type))) | |
565 | { | |
566 | base_valaddr = (char *) alloca (TYPE_LENGTH (baseclass)); | |
567 | if (target_read_memory (address + boffset, base_valaddr, | |
568 | TYPE_LENGTH (baseclass)) != 0) | |
569 | skip = 1; | |
570 | } | |
571 | else | |
572 | base_valaddr = valaddr; | |
573 | } | |
574 | else | |
575 | base_valaddr = valaddr; | |
576 | } | |
577 | ||
578 | /* now do the printing */ | |
579 | if (pretty) | |
580 | { | |
581 | fprintf_filtered (stream, "\n"); | |
582 | print_spaces_filtered (2 * recurse, stream); | |
583 | } | |
584 | fputs_filtered ("<", stream); | |
585 | /* Not sure what the best notation is in the case where there is no | |
586 | baseclass name. */ | |
587 | fputs_filtered (basename ? basename : "", stream); | |
588 | fputs_filtered ("> = ", stream); | |
589 | ||
590 | ||
591 | if (skip >= 1) | |
592 | fprintf_filtered (stream, "<invalid address>"); | |
593 | else | |
594 | cp_print_value_fields (baseclass, real_type, base_valaddr, offset + boffset, address, | |
595 | stream, format, recurse, pretty, | |
596 | (struct type **) obstack_base (&dont_print_vb_obstack), | |
597 | 0); | |
598 | fputs_filtered (", ", stream); | |
599 | ||
600 | flush_it: | |
601 | ; | |
602 | } | |
603 | ||
604 | if (dont_print_vb == 0) | |
605 | { | |
606 | /* Free the space used to deal with the printing | |
607 | of this type from top level. */ | |
608 | obstack_free (&dont_print_vb_obstack, last_dont_print); | |
609 | /* Reset watermark so that we can continue protecting | |
610 | ourselves from whatever we were protecting ourselves. */ | |
611 | dont_print_vb_obstack = tmp_obstack; | |
612 | } | |
613 | } | |
614 | ||
615 | /* Print value of a static member. | |
616 | To avoid infinite recursion when printing a class that contains | |
617 | a static instance of the class, we keep the addresses of all printed | |
618 | static member classes in an obstack and refuse to print them more | |
619 | than once. | |
620 | ||
621 | VAL contains the value to print, TYPE, STREAM, RECURSE, and PRETTY | |
622 | have the same meanings as in c_val_print. */ | |
623 | ||
624 | static void | |
625 | cp_print_static_field (type, val, stream, format, recurse, pretty) | |
626 | struct type *type; | |
627 | value_ptr val; | |
628 | GDB_FILE *stream; | |
629 | int format; | |
630 | int recurse; | |
631 | enum val_prettyprint pretty; | |
632 | { | |
633 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
634 | { | |
635 | CORE_ADDR *first_dont_print; | |
636 | int i; | |
637 | ||
638 | first_dont_print | |
639 | = (CORE_ADDR *)obstack_base (&dont_print_statmem_obstack); | |
640 | i = (CORE_ADDR *)obstack_next_free (&dont_print_statmem_obstack) | |
641 | - first_dont_print; | |
642 | ||
643 | while (--i >= 0) | |
644 | { | |
645 | if (VALUE_ADDRESS (val) == first_dont_print[i]) | |
646 | { | |
647 | fputs_filtered ("<same as static member of an already seen type>", | |
648 | stream); | |
649 | return; | |
650 | } | |
651 | } | |
652 | ||
653 | obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val), | |
654 | sizeof (CORE_ADDR)); | |
655 | ||
656 | CHECK_TYPEDEF (type); | |
657 | cp_print_value_fields (type, type, VALUE_CONTENTS_ALL (val), VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val), | |
658 | stream, format, recurse, pretty, NULL, 1); | |
659 | return; | |
660 | } | |
661 | val_print (type, VALUE_CONTENTS_ALL (val), VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val), | |
662 | stream, format, 0, recurse, pretty); | |
663 | } | |
664 | ||
665 | void | |
666 | cp_print_class_member (valaddr, domain, stream, prefix) | |
667 | char *valaddr; | |
668 | struct type *domain; | |
669 | GDB_FILE *stream; | |
670 | char *prefix; | |
671 | { | |
672 | ||
673 | /* VAL is a byte offset into the structure type DOMAIN. | |
674 | Find the name of the field for that offset and | |
675 | print it. */ | |
676 | int extra = 0; | |
677 | int bits = 0; | |
678 | register unsigned int i; | |
679 | unsigned len = TYPE_NFIELDS (domain); | |
680 | ||
681 | /* @@ Make VAL into bit offset */ | |
682 | ||
683 | /* Note: HP aCC generates offsets that are the real byte offsets added | |
684 | to a constant bias 0x20000000 (1 << 29). This constant bias gets | |
685 | shifted out in the code below -- joyous happenstance! */ | |
686 | ||
687 | /* Note: HP cfront uses a constant bias of 1; if we support this | |
688 | compiler ever, we will have to adjust the computation below */ | |
689 | ||
690 | LONGEST val = unpack_long (builtin_type_int, valaddr) << 3; | |
691 | for (i = TYPE_N_BASECLASSES (domain); i < len; i++) | |
692 | { | |
693 | int bitpos = TYPE_FIELD_BITPOS (domain, i); | |
694 | QUIT; | |
695 | if (val == bitpos) | |
696 | break; | |
697 | if (val < bitpos && i != 0) | |
698 | { | |
699 | /* Somehow pointing into a field. */ | |
700 | i -= 1; | |
701 | extra = (val - TYPE_FIELD_BITPOS (domain, i)); | |
702 | if (extra & 0x7) | |
703 | bits = 1; | |
704 | else | |
705 | extra >>= 3; | |
706 | break; | |
707 | } | |
708 | } | |
709 | if (i < len) | |
710 | { | |
711 | char *name; | |
712 | fprintf_filtered (stream, prefix); | |
713 | name = type_name_no_tag (domain); | |
714 | if (name) | |
715 | fputs_filtered (name, stream); | |
716 | else | |
717 | c_type_print_base (domain, stream, 0, 0); | |
718 | fprintf_filtered (stream, "::"); | |
719 | fputs_filtered (TYPE_FIELD_NAME (domain, i), stream); | |
720 | if (extra) | |
721 | fprintf_filtered (stream, " + %d bytes", extra); | |
722 | if (bits) | |
723 | fprintf_filtered (stream, " (offset in bits)"); | |
724 | } | |
725 | else | |
726 | fprintf_filtered (stream, "%d", val >> 3); | |
727 | } | |
728 | ||
729 | ||
730 | /* This function prints out virtual table entries for a class; it | |
731 | * recurses on the base classes to find all virtual functions | |
732 | * available in a class. | |
733 | * | |
734 | * pai/1997-05-21 Note: As the name suggests, it's currently | |
735 | * implemented for HP aCC runtime only. g++ objects are handled | |
736 | * differently and I have made no attempt to fold that logic in | |
737 | * here. The runtime layout is different for the two cases. Also, | |
738 | * this currently has only the code for non-RRBC layouts generated by | |
739 | * the HP aCC compiler; RRBC code is stubbed out and will have to be | |
740 | * added later. */ | |
741 | ||
742 | ||
743 | static void | |
744 | cp_print_hpacc_virtual_table_entries (type, vfuncs, v, stream, format, recurse, pretty) | |
745 | struct type * type; | |
746 | int * vfuncs; | |
747 | value_ptr v; | |
748 | GDB_FILE *stream; | |
749 | int format; | |
750 | int recurse; | |
751 | enum val_prettyprint pretty; | |
752 | { | |
753 | int fn, oi; | |
754 | ||
755 | /* pai: FIXME this function doesn't work. It should handle a given | |
756 | * virtual function only once (latest redefinition in class hierarchy) | |
757 | */ | |
758 | ||
759 | /* Recursion on other classes that can share the same vtable */ | |
760 | struct type * pbc = primary_base_class (type); | |
761 | if (pbc) | |
762 | cp_print_hpacc_virtual_table_entries (pbc, vfuncs, v, stream, format, recurse, pretty); | |
763 | ||
764 | /* Now deal with vfuncs declared in this class */ | |
765 | for (fn = 0; fn < TYPE_NFN_FIELDS (type); fn++) | |
766 | for (oi = 0; oi < TYPE_FN_FIELDLIST_LENGTH (type, fn); oi++) | |
767 | if (TYPE_FN_FIELD_VIRTUAL_P (TYPE_FN_FIELDLIST1 (type, fn), oi)) | |
768 | { | |
769 | char * vf_name; | |
770 | ||
771 | /* virtual function offset */ | |
772 | int vx = TYPE_FN_FIELD_VOFFSET (TYPE_FN_FIELDLIST1 (type, fn), oi) - 1; | |
773 | ||
774 | /* Get the address of the vfunction entry */ | |
775 | value_ptr vf = value_copy (v); | |
776 | if (VALUE_LAZY (vf)) | |
777 | (void) value_fetch_lazy (vf); | |
778 | vf->aligner.contents[0] += 4 * (HP_ACC_VFUNC_START + vx); /* adjust by offset */ | |
779 | vf = value_ind (vf); /* get the entry */ | |
780 | VALUE_TYPE (vf) = VALUE_TYPE (v); /* make it a pointer */ | |
781 | ||
782 | /* print out the entry */ | |
783 | val_print (VALUE_TYPE (vf), VALUE_CONTENTS (vf), 0, 0, | |
784 | stream, format, 0, recurse + 1, pretty); | |
785 | vf_name = cplus_demangle (TYPE_FN_FIELD_PHYSNAME (TYPE_FN_FIELDLIST1 (type, fn), oi), | |
786 | DMGL_ARM); /* pai: (temp) FIXME Maybe this should be DMGL_ANSI */ | |
787 | fprintf_filtered (stream, " %s", vf_name); | |
788 | if (--(*vfuncs) > 0) | |
789 | fputs_filtered (", ", stream); | |
790 | } | |
791 | } | |
792 | ||
793 | ||
794 | ||
795 | void | |
796 | _initialize_cp_valprint () | |
797 | { | |
798 | add_show_from_set | |
799 | (add_set_cmd ("static-members", class_support, var_boolean, | |
800 | (char *)&static_field_print, | |
801 | "Set printing of C++ static members.", | |
802 | &setprintlist), | |
803 | &showprintlist); | |
804 | /* Turn on printing of static fields. */ | |
805 | static_field_print = 1; | |
806 | ||
807 | add_show_from_set | |
808 | (add_set_cmd ("vtbl", class_support, var_boolean, (char *)&vtblprint, | |
809 | "Set printing of C++ virtual function tables.", | |
810 | &setprintlist), | |
811 | &showprintlist); | |
812 | ||
813 | add_show_from_set | |
814 | (add_set_cmd ("object", class_support, var_boolean, (char *)&objectprint, | |
815 | "Set printing of object's derived type based on vtable info.", | |
816 | &setprintlist), | |
817 | &showprintlist); | |
818 | ||
819 | /* Give people the defaults which they are used to. */ | |
820 | objectprint = 0; | |
821 | vtblprint = 0; | |
822 | obstack_begin (&dont_print_vb_obstack, 32 * sizeof (struct type *)); | |
823 | obstack_specify_allocation (&dont_print_statmem_obstack, | |
824 | 32 * sizeof (CORE_ADDR), sizeof (CORE_ADDR), | |
825 | xmalloc, free); | |
826 | } |