Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Support for printing C++ values for GDB, the GNU debugger. |
a2bd3dcd AC |
2 | |
3 | Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, | |
4 | 1997, 2000, 2001, 2002, 2003, 2005 Free Software Foundation, Inc. | |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
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. | |
c906108c | 12 | |
c5aa993b JM |
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. | |
c906108c | 17 | |
c5aa993b JM |
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 | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
22 | |
23 | #include "defs.h" | |
04ea0df1 | 24 | #include "gdb_obstack.h" |
c906108c SS |
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 "demangle.h" | |
32 | #include "annotate.h" | |
33 | #include "gdb_string.h" | |
34 | #include "c-lang.h" | |
35 | #include "target.h" | |
b9d652ac | 36 | #include "cp-abi.h" |
973177d3 | 37 | #include "valprint.h" |
d3cbe7ef | 38 | #include "cp-support.h" |
cf309262 | 39 | #include "language.h" |
c906108c | 40 | |
c906108c SS |
41 | int vtblprint; /* Controls printing of vtbl's */ |
42 | int objectprint; /* Controls looking up an object's derived type | |
43 | using what we find in its vtables. */ | |
c5aa993b | 44 | int static_field_print; /* Controls printing of static fields. */ |
c906108c SS |
45 | |
46 | static struct obstack dont_print_vb_obstack; | |
47 | static struct obstack dont_print_statmem_obstack; | |
48 | ||
a14ed312 | 49 | extern void _initialize_cp_valprint (void); |
392a587b | 50 | |
6943961c | 51 | static void cp_print_static_field (struct type *, struct value *, |
d9fcf2fb JM |
52 | struct ui_file *, int, int, |
53 | enum val_prettyprint); | |
c906108c | 54 | |
a2bd3dcd AC |
55 | static void cp_print_value (struct type *, struct type *, const bfd_byte *, |
56 | int, CORE_ADDR, struct ui_file *, int, int, | |
d9fcf2fb | 57 | enum val_prettyprint, struct type **); |
c906108c | 58 | |
d9fcf2fb | 59 | static void cp_print_hpacc_virtual_table_entries (struct type *, int *, |
6943961c | 60 | struct value *, |
d9fcf2fb JM |
61 | struct ui_file *, int, |
62 | int, | |
63 | enum val_prettyprint); | |
c906108c SS |
64 | |
65 | ||
66 | void | |
9519ccd5 | 67 | cp_print_class_method (const bfd_byte *valaddr, |
2c63a960 JB |
68 | struct type *type, |
69 | struct ui_file *stream) | |
c906108c SS |
70 | { |
71 | struct type *domain; | |
72 | struct fn_field *f = NULL; | |
73 | int j = 0; | |
74 | int len2; | |
75 | int offset; | |
76 | char *kind = ""; | |
77 | CORE_ADDR addr; | |
78 | struct symbol *sym; | |
79 | unsigned len; | |
80 | unsigned int i; | |
81 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); | |
82 | ||
83 | domain = TYPE_DOMAIN_TYPE (target_type); | |
c5aa993b | 84 | if (domain == (struct type *) NULL) |
c906108c SS |
85 | { |
86 | fprintf_filtered (stream, "<unknown>"); | |
87 | return; | |
88 | } | |
1947a811 | 89 | addr = unpack_pointer (type, valaddr); |
c906108c SS |
90 | if (METHOD_PTR_IS_VIRTUAL (addr)) |
91 | { | |
92 | offset = METHOD_PTR_TO_VOFFSET (addr); | |
93 | len = TYPE_NFN_FIELDS (domain); | |
94 | for (i = 0; i < len; i++) | |
95 | { | |
96 | f = TYPE_FN_FIELDLIST1 (domain, i); | |
97 | len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); | |
c5aa993b | 98 | |
de17c821 | 99 | check_stub_method_group (domain, i); |
c906108c SS |
100 | for (j = 0; j < len2; j++) |
101 | { | |
c906108c SS |
102 | if (TYPE_FN_FIELD_VOFFSET (f, j) == offset) |
103 | { | |
c906108c SS |
104 | kind = "virtual "; |
105 | goto common; | |
106 | } | |
107 | } | |
108 | } | |
109 | } | |
110 | else | |
111 | { | |
112 | sym = find_pc_function (addr); | |
113 | if (sym == 0) | |
114 | { | |
c5aa993b | 115 | /* 1997-08-01 Currently unsupported with HP aCC */ |
f83f82bc | 116 | if (deprecated_hp_som_som_object_present) |
c5aa993b JM |
117 | { |
118 | fputs_filtered ("?? <not supported with HP aCC>", stream); | |
119 | return; | |
120 | } | |
8a3fe4f8 | 121 | error (_("invalid pointer to member function")); |
c906108c SS |
122 | } |
123 | len = TYPE_NFN_FIELDS (domain); | |
124 | for (i = 0; i < len; i++) | |
125 | { | |
126 | f = TYPE_FN_FIELDLIST1 (domain, i); | |
127 | len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); | |
c5aa993b | 128 | |
1b2ef1b6 | 129 | check_stub_method_group (domain, i); |
c906108c SS |
130 | for (j = 0; j < len2; j++) |
131 | { | |
22abf04a | 132 | if (strcmp (DEPRECATED_SYMBOL_NAME (sym), TYPE_FN_FIELD_PHYSNAME (f, j)) |
762f08a3 | 133 | == 0) |
de17c821 | 134 | goto common; |
c906108c SS |
135 | } |
136 | } | |
137 | } | |
2c63a960 | 138 | common: |
c906108c SS |
139 | if (i < len) |
140 | { | |
141 | char *demangled_name; | |
142 | ||
143 | fprintf_filtered (stream, "&"); | |
306d9ac5 | 144 | fputs_filtered (kind, stream); |
c906108c SS |
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); | |
b8c9b27d | 153 | xfree (demangled_name); |
c906108c SS |
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 | ||
8343f86c | 164 | /* GCC versions after 2.4.5 use this. */ |
2c63a960 | 165 | const char vtbl_ptr_name[] = "__vtbl_ptr_type"; |
c906108c | 166 | |
8343f86c | 167 | /* HP aCC uses different names. */ |
2c63a960 JB |
168 | const char hpacc_vtbl_ptr_name[] = "__vfp"; |
169 | const char hpacc_vtbl_ptr_type_name[] = "__vftyp"; | |
c906108c | 170 | |
c906108c SS |
171 | /* Return truth value for assertion that TYPE is of the type |
172 | "pointer to virtual function". */ | |
173 | ||
174 | int | |
fba45db2 | 175 | cp_is_vtbl_ptr_type (struct type *type) |
c906108c SS |
176 | { |
177 | char *typename = type_name_no_tag (type); | |
178 | ||
8343f86c | 179 | return (typename != NULL && !strcmp (typename, vtbl_ptr_name)); |
c906108c SS |
180 | } |
181 | ||
182 | /* Return truth value for the assertion that TYPE is of the type | |
183 | "pointer to virtual function table". */ | |
184 | ||
185 | int | |
fba45db2 | 186 | cp_is_vtbl_member (struct type *type) |
c906108c | 187 | { |
0e5e3ea6 PS |
188 | /* With older versions of g++, the vtbl field pointed to an array |
189 | of structures. Nowadays it points directly to the structure. */ | |
c906108c SS |
190 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
191 | { | |
192 | type = TYPE_TARGET_TYPE (type); | |
193 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
194 | { | |
195 | type = TYPE_TARGET_TYPE (type); | |
c5aa993b JM |
196 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */ |
197 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */ | |
c906108c SS |
198 | { |
199 | /* Virtual functions tables are full of pointers | |
c5aa993b | 200 | to virtual functions. */ |
c906108c SS |
201 | return cp_is_vtbl_ptr_type (type); |
202 | } | |
203 | } | |
0e5e3ea6 PS |
204 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) /* if not using thunks */ |
205 | { | |
206 | return cp_is_vtbl_ptr_type (type); | |
207 | } | |
208 | else if (TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */ | |
209 | { | |
210 | /* The type name of the thunk pointer is NULL when using dwarf2. | |
211 | We could test for a pointer to a function, but there is | |
212 | no type info for the virtual table either, so it wont help. */ | |
213 | return cp_is_vtbl_ptr_type (type); | |
214 | } | |
c906108c SS |
215 | } |
216 | return 0; | |
217 | } | |
218 | ||
219 | /* Mutually recursive subroutines of cp_print_value and c_val_print to | |
220 | print out a structure's fields: cp_print_value_fields and cp_print_value. | |
c5aa993b | 221 | |
c906108c SS |
222 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the |
223 | same meanings as in cp_print_value and c_val_print. | |
224 | ||
225 | 2nd argument REAL_TYPE is used to carry over the type of the derived | |
226 | class across the recursion to base classes. | |
227 | ||
228 | DONT_PRINT is an array of baseclass types that we | |
229 | should not print, or zero if called from top level. */ | |
230 | ||
231 | void | |
a2bd3dcd AC |
232 | cp_print_value_fields (struct type *type, struct type *real_type, |
233 | const bfd_byte *valaddr, int offset, CORE_ADDR address, | |
234 | struct ui_file *stream, int format, int recurse, | |
235 | enum val_prettyprint pretty, | |
236 | struct type **dont_print_vb,int dont_print_statmem) | |
c906108c SS |
237 | { |
238 | int i, len, n_baseclasses; | |
239 | struct obstack tmp_obstack; | |
240 | char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack); | |
241 | int fields_seen = 0; | |
242 | ||
243 | CHECK_TYPEDEF (type); | |
244 | ||
245 | fprintf_filtered (stream, "{"); | |
246 | len = TYPE_NFIELDS (type); | |
247 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
248 | ||
249 | /* First, print out baseclasses such that we don't print | |
250 | duplicates of virtual baseclasses. */ | |
251 | ||
252 | if (n_baseclasses > 0) | |
253 | cp_print_value (type, real_type, valaddr, offset, address, stream, | |
c5aa993b | 254 | format, recurse + 1, pretty, dont_print_vb); |
c906108c SS |
255 | |
256 | /* Second, print out data fields */ | |
257 | ||
258 | /* If there are no data fields, or if the only field is the | |
c5aa993b | 259 | * vtbl pointer, skip this part */ |
2c63a960 JB |
260 | if ((len == n_baseclasses) |
261 | || ((len - n_baseclasses == 1) | |
262 | && TYPE_HAS_VTABLE (type) | |
5cb316ef AC |
263 | && strncmp (TYPE_FIELD_NAME (type, n_baseclasses), |
264 | hpacc_vtbl_ptr_name, 5) == 0) | |
2c63a960 | 265 | || !len) |
c906108c SS |
266 | fprintf_filtered (stream, "<No data fields>"); |
267 | else | |
268 | { | |
c906108c SS |
269 | if (dont_print_statmem == 0) |
270 | { | |
271 | /* If we're at top level, carve out a completely fresh | |
272 | chunk of the obstack and use that until this particular | |
273 | invocation returns. */ | |
274 | tmp_obstack = dont_print_statmem_obstack; | |
275 | obstack_finish (&dont_print_statmem_obstack); | |
276 | } | |
277 | ||
278 | for (i = n_baseclasses; i < len; i++) | |
279 | { | |
280 | /* If requested, skip printing of static fields. */ | |
281 | if (!static_field_print && TYPE_FIELD_STATIC (type, i)) | |
282 | continue; | |
283 | ||
c5aa993b | 284 | /* If a vtable pointer appears, we'll print it out later */ |
2c63a960 | 285 | if (TYPE_HAS_VTABLE (type) |
5cb316ef AC |
286 | && strncmp (TYPE_FIELD_NAME (type, i), hpacc_vtbl_ptr_name, |
287 | 5) == 0) | |
c5aa993b JM |
288 | continue; |
289 | ||
c906108c SS |
290 | if (fields_seen) |
291 | fprintf_filtered (stream, ", "); | |
292 | else if (n_baseclasses > 0) | |
293 | { | |
294 | if (pretty) | |
295 | { | |
296 | fprintf_filtered (stream, "\n"); | |
297 | print_spaces_filtered (2 + 2 * recurse, stream); | |
298 | fputs_filtered ("members of ", stream); | |
299 | fputs_filtered (type_name_no_tag (type), stream); | |
300 | fputs_filtered (": ", stream); | |
301 | } | |
302 | } | |
303 | fields_seen = 1; | |
304 | ||
305 | if (pretty) | |
306 | { | |
307 | fprintf_filtered (stream, "\n"); | |
308 | print_spaces_filtered (2 + 2 * recurse, stream); | |
309 | } | |
c5aa993b | 310 | else |
c906108c SS |
311 | { |
312 | wrap_here (n_spaces (2 + 2 * recurse)); | |
313 | } | |
314 | if (inspect_it) | |
315 | { | |
316 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR) | |
317 | fputs_filtered ("\"( ptr \"", stream); | |
318 | else | |
319 | fputs_filtered ("\"( nodef \"", stream); | |
320 | if (TYPE_FIELD_STATIC (type, i)) | |
321 | fputs_filtered ("static ", stream); | |
322 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
cf309262 | 323 | current_language->la_language, |
c906108c SS |
324 | DMGL_PARAMS | DMGL_ANSI); |
325 | fputs_filtered ("\" \"", stream); | |
326 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
cf309262 | 327 | current_language->la_language, |
c906108c SS |
328 | DMGL_PARAMS | DMGL_ANSI); |
329 | fputs_filtered ("\") \"", stream); | |
330 | } | |
331 | else | |
332 | { | |
333 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
334 | ||
335 | if (TYPE_FIELD_STATIC (type, i)) | |
336 | fputs_filtered ("static ", stream); | |
337 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
cf309262 | 338 | current_language->la_language, |
c906108c SS |
339 | DMGL_PARAMS | DMGL_ANSI); |
340 | annotate_field_name_end (); | |
341 | /* do not print leading '=' in case of anonymous unions */ | |
342 | if (strcmp (TYPE_FIELD_NAME (type, i), "")) | |
343 | fputs_filtered (" = ", stream); | |
344 | annotate_field_value (); | |
345 | } | |
346 | ||
347 | if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i)) | |
348 | { | |
6943961c | 349 | struct value *v; |
c906108c SS |
350 | |
351 | /* Bitfields require special handling, especially due to byte | |
c5aa993b | 352 | order problems. */ |
c906108c SS |
353 | if (TYPE_FIELD_IGNORE (type, i)) |
354 | { | |
c5aa993b | 355 | fputs_filtered ("<optimized out or zero length>", stream); |
c906108c SS |
356 | } |
357 | else | |
358 | { | |
2c63a960 JB |
359 | v = value_from_longest |
360 | (TYPE_FIELD_TYPE (type, i), | |
361 | unpack_field_as_long (type, valaddr + offset, i)); | |
c906108c | 362 | |
0fd88904 | 363 | val_print (TYPE_FIELD_TYPE (type, i), value_contents (v), |
2c63a960 | 364 | 0, 0, stream, format, 0, recurse + 1, pretty); |
c906108c SS |
365 | } |
366 | } | |
367 | else | |
368 | { | |
369 | if (TYPE_FIELD_IGNORE (type, i)) | |
370 | { | |
c5aa993b | 371 | fputs_filtered ("<optimized out or zero length>", stream); |
c906108c SS |
372 | } |
373 | else if (TYPE_FIELD_STATIC (type, i)) | |
374 | { | |
6943961c | 375 | struct value *v = value_static_field (type, i); |
c906108c SS |
376 | if (v == NULL) |
377 | fputs_filtered ("<optimized out>", stream); | |
378 | else | |
379 | cp_print_static_field (TYPE_FIELD_TYPE (type, i), v, | |
380 | stream, format, recurse + 1, | |
381 | pretty); | |
382 | } | |
383 | else | |
384 | { | |
c5aa993b | 385 | val_print (TYPE_FIELD_TYPE (type, i), |
2c63a960 | 386 | valaddr, offset + TYPE_FIELD_BITPOS (type, i) / 8, |
c5aa993b JM |
387 | address + TYPE_FIELD_BITPOS (type, i) / 8, |
388 | stream, format, 0, recurse + 1, pretty); | |
c906108c SS |
389 | } |
390 | } | |
391 | annotate_field_end (); | |
392 | } | |
393 | ||
394 | if (dont_print_statmem == 0) | |
395 | { | |
396 | /* Free the space used to deal with the printing | |
397 | of the members from top level. */ | |
398 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
399 | dont_print_statmem_obstack = tmp_obstack; | |
400 | } | |
401 | ||
402 | if (pretty) | |
403 | { | |
404 | fprintf_filtered (stream, "\n"); | |
405 | print_spaces_filtered (2 * recurse, stream); | |
406 | } | |
c5aa993b JM |
407 | } /* if there are data fields */ |
408 | /* Now print out the virtual table pointer if there is one */ | |
2c63a960 | 409 | if (TYPE_HAS_VTABLE (type) |
5cb316ef AC |
410 | && strncmp (TYPE_FIELD_NAME (type, n_baseclasses), |
411 | hpacc_vtbl_ptr_name, 5) == 0) | |
c906108c | 412 | { |
6943961c | 413 | struct value *v; |
c5aa993b | 414 | /* First get the virtual table pointer and print it out */ |
c906108c SS |
415 | |
416 | #if 0 | |
417 | fputs_filtered ("__vfp = ", stream); | |
418 | #endif | |
419 | ||
420 | fputs_filtered (", Virtual table at ", stream); | |
421 | ||
422 | /* pai: FIXME 32x64 problem? */ | |
423 | /* Not sure what the best notation is in the case where there is no | |
424 | baseclass name. */ | |
4478b372 | 425 | v = value_from_pointer (lookup_pointer_type (builtin_type_unsigned_long), |
c5aa993b | 426 | *(unsigned long *) (valaddr + offset)); |
c906108c | 427 | |
0fd88904 | 428 | val_print (value_type (v), value_contents (v), 0, 0, |
c5aa993b | 429 | stream, format, 0, recurse + 1, pretty); |
c906108c SS |
430 | fields_seen = 1; |
431 | ||
432 | if (vtblprint) | |
c5aa993b JM |
433 | { |
434 | /* Print out function pointers in vtable. */ | |
c906108c | 435 | |
c5aa993b JM |
436 | /* FIXME: then-clause is for non-RRBC layout of virtual |
437 | * table. The RRBC case in the else-clause is yet to be | |
438 | * implemented. The if (1) below should be changed to a | |
439 | * test for whether the executable we have was compiled | |
440 | * with a version of HP aCC that doesn't have RRBC | |
441 | * support. */ | |
c906108c | 442 | |
c5aa993b JM |
443 | if (1) |
444 | { | |
2c63a960 JB |
445 | /* no RRBC support; function pointers embedded directly |
446 | in vtable */ | |
c906108c | 447 | |
c5aa993b | 448 | int vfuncs = count_virtual_fns (real_type); |
c906108c | 449 | |
c5aa993b | 450 | fputs_filtered (" {", stream); |
c906108c | 451 | |
c5aa993b | 452 | /* FIXME : doesn't work at present */ |
c906108c | 453 | #if 0 |
2c63a960 JB |
454 | fprintf_filtered (stream, "%d entr%s: ", vfuncs, |
455 | vfuncs == 1 ? "y" : "ies"); | |
c906108c | 456 | #else |
c5aa993b | 457 | fputs_filtered ("not implemented", stream); |
c906108c SS |
458 | |
459 | ||
460 | #endif | |
461 | ||
c5aa993b | 462 | /* recursive function that prints all virtual function entries */ |
c906108c | 463 | #if 0 |
2c63a960 JB |
464 | cp_print_hpacc_virtual_table_entries (real_type, &vfuncs, v, |
465 | stream, format, recurse, | |
466 | pretty); | |
c906108c | 467 | #endif |
c5aa993b JM |
468 | fputs_filtered ("}", stream); |
469 | } /* non-RRBC case */ | |
470 | else | |
471 | { | |
4d33f415 | 472 | /* FIXME -- see comments above */ |
c5aa993b JM |
473 | /* RRBC support present; function pointers are found |
474 | * by indirection through the class segment entries. */ | |
475 | ||
476 | ||
477 | } /* RRBC case */ | |
478 | } /* if vtblprint */ | |
c906108c SS |
479 | |
480 | if (pretty) | |
481 | { | |
482 | fprintf_filtered (stream, "\n"); | |
483 | print_spaces_filtered (2 * recurse, stream); | |
484 | } | |
485 | ||
c5aa993b JM |
486 | } /* if vtable exists */ |
487 | ||
c906108c SS |
488 | fprintf_filtered (stream, "}"); |
489 | } | |
490 | ||
491 | /* Special val_print routine to avoid printing multiple copies of virtual | |
492 | baseclasses. */ | |
493 | ||
494 | static void | |
a2bd3dcd AC |
495 | cp_print_value (struct type *type, struct type *real_type, |
496 | const bfd_byte *valaddr, int offset, CORE_ADDR address, | |
497 | struct ui_file *stream, int format, int recurse, | |
498 | enum val_prettyprint pretty, struct type **dont_print_vb) | |
c906108c SS |
499 | { |
500 | struct obstack tmp_obstack; | |
501 | struct type **last_dont_print | |
2c63a960 | 502 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); |
c906108c | 503 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); |
b9d652ac DJ |
504 | int thisoffset; |
505 | struct type *thistype; | |
c906108c SS |
506 | |
507 | if (dont_print_vb == 0) | |
508 | { | |
509 | /* If we're at top level, carve out a completely fresh | |
c5aa993b JM |
510 | chunk of the obstack and use that until this particular |
511 | invocation returns. */ | |
c906108c SS |
512 | tmp_obstack = dont_print_vb_obstack; |
513 | /* Bump up the high-water mark. Now alpha is omega. */ | |
514 | obstack_finish (&dont_print_vb_obstack); | |
515 | } | |
516 | ||
517 | for (i = 0; i < n_baseclasses; i++) | |
518 | { | |
519 | int boffset; | |
520 | int skip; | |
521 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); | |
522 | char *basename = TYPE_NAME (baseclass); | |
a2bd3dcd | 523 | const bfd_byte *base_valaddr; |
c906108c SS |
524 | |
525 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
526 | { | |
527 | struct type **first_dont_print | |
2c63a960 | 528 | = (struct type **) obstack_base (&dont_print_vb_obstack); |
c906108c | 529 | |
c5aa993b | 530 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) |
2c63a960 | 531 | - first_dont_print; |
c906108c SS |
532 | |
533 | while (--j >= 0) | |
534 | if (baseclass == first_dont_print[j]) | |
535 | goto flush_it; | |
536 | ||
537 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
538 | } | |
539 | ||
b9d652ac DJ |
540 | thisoffset = offset; |
541 | thistype = real_type; | |
c906108c | 542 | if (TYPE_HAS_VTABLE (type) && BASETYPE_VIA_VIRTUAL (type, i)) |
c5aa993b JM |
543 | { |
544 | /* Assume HP/Taligent runtime convention */ | |
545 | find_rt_vbase_offset (type, TYPE_BASECLASS (type, i), | |
546 | valaddr, offset, &boffset, &skip); | |
547 | if (skip >= 0) | |
8a3fe4f8 AC |
548 | error (_("Virtual base class offset not found from vtable while" |
549 | " printing")); | |
c5aa993b JM |
550 | base_valaddr = valaddr; |
551 | } | |
c906108c | 552 | else |
c5aa993b | 553 | { |
2c63a960 JB |
554 | boffset = baseclass_offset (type, i, |
555 | valaddr + offset, | |
9e14d721 | 556 | address); |
c5aa993b | 557 | skip = ((boffset == -1) || (boffset + offset) < 0) ? 1 : -1; |
c906108c | 558 | |
c5aa993b JM |
559 | if (BASETYPE_VIA_VIRTUAL (type, i)) |
560 | { | |
2c63a960 JB |
561 | /* The virtual base class pointer might have been |
562 | clobbered by the user program. Make sure that it | |
563 | still points to a valid memory location. */ | |
c906108c | 564 | |
2c63a960 JB |
565 | if (boffset != -1 |
566 | && ((boffset + offset) < 0 | |
567 | || (boffset + offset) >= TYPE_LENGTH (type))) | |
c5aa993b | 568 | { |
34c0bd93 | 569 | /* FIXME (alloca): unsafe if baseclass is really really large. */ |
a2bd3dcd AC |
570 | bfd_byte *buf = alloca (TYPE_LENGTH (baseclass)); |
571 | base_valaddr = buf; | |
572 | if (target_read_memory (address + boffset, buf, | |
c5aa993b JM |
573 | TYPE_LENGTH (baseclass)) != 0) |
574 | skip = 1; | |
9e14d721 | 575 | address = address + boffset; |
b9d652ac DJ |
576 | thisoffset = 0; |
577 | boffset = 0; | |
578 | thistype = baseclass; | |
c5aa993b JM |
579 | } |
580 | else | |
581 | base_valaddr = valaddr; | |
582 | } | |
583 | else | |
584 | base_valaddr = valaddr; | |
c906108c SS |
585 | } |
586 | ||
587 | /* now do the printing */ | |
588 | if (pretty) | |
589 | { | |
590 | fprintf_filtered (stream, "\n"); | |
591 | print_spaces_filtered (2 * recurse, stream); | |
592 | } | |
593 | fputs_filtered ("<", stream); | |
594 | /* Not sure what the best notation is in the case where there is no | |
c5aa993b | 595 | baseclass name. */ |
c906108c SS |
596 | fputs_filtered (basename ? basename : "", stream); |
597 | fputs_filtered ("> = ", stream); | |
598 | ||
599 | ||
600 | if (skip >= 1) | |
601 | fprintf_filtered (stream, "<invalid address>"); | |
602 | else | |
b9d652ac | 603 | cp_print_value_fields (baseclass, thistype, base_valaddr, |
9e14d721 DJ |
604 | thisoffset + boffset, address + boffset, |
605 | stream, format, | |
2c63a960 JB |
606 | recurse, pretty, |
607 | ((struct type **) | |
608 | obstack_base (&dont_print_vb_obstack)), | |
c906108c SS |
609 | 0); |
610 | fputs_filtered (", ", stream); | |
611 | ||
612 | flush_it: | |
613 | ; | |
614 | } | |
615 | ||
616 | if (dont_print_vb == 0) | |
617 | { | |
618 | /* Free the space used to deal with the printing | |
c5aa993b | 619 | of this type from top level. */ |
c906108c SS |
620 | obstack_free (&dont_print_vb_obstack, last_dont_print); |
621 | /* Reset watermark so that we can continue protecting | |
c5aa993b | 622 | ourselves from whatever we were protecting ourselves. */ |
c906108c SS |
623 | dont_print_vb_obstack = tmp_obstack; |
624 | } | |
625 | } | |
626 | ||
627 | /* Print value of a static member. | |
628 | To avoid infinite recursion when printing a class that contains | |
629 | a static instance of the class, we keep the addresses of all printed | |
630 | static member classes in an obstack and refuse to print them more | |
631 | than once. | |
632 | ||
633 | VAL contains the value to print, TYPE, STREAM, RECURSE, and PRETTY | |
634 | have the same meanings as in c_val_print. */ | |
635 | ||
636 | static void | |
2c63a960 | 637 | cp_print_static_field (struct type *type, |
6943961c | 638 | struct value *val, |
2c63a960 JB |
639 | struct ui_file *stream, |
640 | int format, | |
641 | int recurse, | |
642 | enum val_prettyprint pretty) | |
c906108c SS |
643 | { |
644 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
645 | { | |
646 | CORE_ADDR *first_dont_print; | |
647 | int i; | |
648 | ||
649 | first_dont_print | |
c5aa993b JM |
650 | = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); |
651 | i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) | |
c906108c SS |
652 | - first_dont_print; |
653 | ||
654 | while (--i >= 0) | |
655 | { | |
656 | if (VALUE_ADDRESS (val) == first_dont_print[i]) | |
657 | { | |
2c63a960 JB |
658 | fputs_filtered ("<same as static member of an already" |
659 | " seen type>", | |
c906108c SS |
660 | stream); |
661 | return; | |
662 | } | |
663 | } | |
664 | ||
665 | obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val), | |
666 | sizeof (CORE_ADDR)); | |
667 | ||
668 | CHECK_TYPEDEF (type); | |
46615f07 | 669 | cp_print_value_fields (type, type, value_contents_all (val), |
13c3b5f5 | 670 | value_embedded_offset (val), VALUE_ADDRESS (val), |
c906108c SS |
671 | stream, format, recurse, pretty, NULL, 1); |
672 | return; | |
673 | } | |
46615f07 | 674 | val_print (type, value_contents_all (val), |
13c3b5f5 | 675 | value_embedded_offset (val), VALUE_ADDRESS (val), |
c906108c SS |
676 | stream, format, 0, recurse, pretty); |
677 | } | |
678 | ||
679 | void | |
9519ccd5 | 680 | cp_print_class_member (const bfd_byte *valaddr, struct type *domain, |
fba45db2 | 681 | struct ui_file *stream, char *prefix) |
c906108c | 682 | { |
c5aa993b | 683 | |
c906108c SS |
684 | /* VAL is a byte offset into the structure type DOMAIN. |
685 | Find the name of the field for that offset and | |
686 | print it. */ | |
687 | int extra = 0; | |
688 | int bits = 0; | |
52f0bd74 | 689 | unsigned int i; |
c906108c SS |
690 | unsigned len = TYPE_NFIELDS (domain); |
691 | ||
692 | /* @@ Make VAL into bit offset */ | |
693 | ||
694 | /* Note: HP aCC generates offsets that are the real byte offsets added | |
695 | to a constant bias 0x20000000 (1 << 29). This constant bias gets | |
696 | shifted out in the code below -- joyous happenstance! */ | |
697 | ||
698 | /* Note: HP cfront uses a constant bias of 1; if we support this | |
c5aa993b JM |
699 | compiler ever, we will have to adjust the computation below */ |
700 | ||
c906108c SS |
701 | LONGEST val = unpack_long (builtin_type_int, valaddr) << 3; |
702 | for (i = TYPE_N_BASECLASSES (domain); i < len; i++) | |
703 | { | |
704 | int bitpos = TYPE_FIELD_BITPOS (domain, i); | |
705 | QUIT; | |
706 | if (val == bitpos) | |
707 | break; | |
708 | if (val < bitpos && i != 0) | |
709 | { | |
710 | /* Somehow pointing into a field. */ | |
711 | i -= 1; | |
712 | extra = (val - TYPE_FIELD_BITPOS (domain, i)); | |
713 | if (extra & 0x7) | |
714 | bits = 1; | |
715 | else | |
716 | extra >>= 3; | |
717 | break; | |
718 | } | |
719 | } | |
720 | if (i < len) | |
721 | { | |
722 | char *name; | |
306d9ac5 | 723 | fputs_filtered (prefix, stream); |
c906108c SS |
724 | name = type_name_no_tag (domain); |
725 | if (name) | |
c5aa993b | 726 | fputs_filtered (name, stream); |
c906108c SS |
727 | else |
728 | c_type_print_base (domain, stream, 0, 0); | |
729 | fprintf_filtered (stream, "::"); | |
730 | fputs_filtered (TYPE_FIELD_NAME (domain, i), stream); | |
731 | if (extra) | |
732 | fprintf_filtered (stream, " + %d bytes", extra); | |
733 | if (bits) | |
734 | fprintf_filtered (stream, " (offset in bits)"); | |
735 | } | |
736 | else | |
d4f3574e | 737 | fprintf_filtered (stream, "%ld", (long) (val >> 3)); |
c906108c SS |
738 | } |
739 | ||
740 | ||
741 | /* This function prints out virtual table entries for a class; it | |
742 | * recurses on the base classes to find all virtual functions | |
743 | * available in a class. | |
744 | * | |
745 | * pai/1997-05-21 Note: As the name suggests, it's currently | |
746 | * implemented for HP aCC runtime only. g++ objects are handled | |
747 | * differently and I have made no attempt to fold that logic in | |
748 | * here. The runtime layout is different for the two cases. Also, | |
749 | * this currently has only the code for non-RRBC layouts generated by | |
750 | * the HP aCC compiler; RRBC code is stubbed out and will have to be | |
751 | * added later. */ | |
c5aa993b | 752 | |
c906108c SS |
753 | |
754 | static void | |
fba45db2 | 755 | cp_print_hpacc_virtual_table_entries (struct type *type, int *vfuncs, |
6943961c | 756 | struct value *v, struct ui_file *stream, |
fba45db2 KB |
757 | int format, int recurse, |
758 | enum val_prettyprint pretty) | |
c906108c SS |
759 | { |
760 | int fn, oi; | |
761 | ||
762 | /* pai: FIXME this function doesn't work. It should handle a given | |
763 | * virtual function only once (latest redefinition in class hierarchy) | |
764 | */ | |
765 | ||
c5aa993b JM |
766 | /* Recursion on other classes that can share the same vtable */ |
767 | struct type *pbc = primary_base_class (type); | |
c906108c | 768 | if (pbc) |
2c63a960 JB |
769 | cp_print_hpacc_virtual_table_entries (pbc, vfuncs, v, stream, format, |
770 | recurse, pretty); | |
c5aa993b | 771 | |
c906108c SS |
772 | /* Now deal with vfuncs declared in this class */ |
773 | for (fn = 0; fn < TYPE_NFN_FIELDS (type); fn++) | |
774 | for (oi = 0; oi < TYPE_FN_FIELDLIST_LENGTH (type, fn); oi++) | |
775 | if (TYPE_FN_FIELD_VIRTUAL_P (TYPE_FN_FIELDLIST1 (type, fn), oi)) | |
c5aa993b JM |
776 | { |
777 | char *vf_name; | |
2c63a960 | 778 | const char *field_physname; |
c5aa993b JM |
779 | |
780 | /* virtual function offset */ | |
2c63a960 JB |
781 | int vx = (TYPE_FN_FIELD_VOFFSET (TYPE_FN_FIELDLIST1 (type, fn), oi) |
782 | - 1); | |
c5aa993b JM |
783 | |
784 | /* Get the address of the vfunction entry */ | |
6943961c | 785 | struct value *vf = value_copy (v); |
d69fe07e | 786 | if (value_lazy (vf)) |
c5aa993b | 787 | (void) value_fetch_lazy (vf); |
2c63a960 | 788 | /* adjust by offset */ |
5086187c AC |
789 | /* NOTE: cagney/2005-01-02: THIS IS BOGUS. */ |
790 | value_contents_writeable (vf)[0] += 4 * (HP_ACC_VFUNC_START + vx); | |
c5aa993b | 791 | vf = value_ind (vf); /* get the entry */ |
04624583 AC |
792 | /* make it a pointer */ |
793 | deprecated_set_value_type (vf, value_type (v)); | |
c5aa993b JM |
794 | |
795 | /* print out the entry */ | |
0fd88904 | 796 | val_print (value_type (vf), value_contents (vf), 0, 0, |
c5aa993b | 797 | stream, format, 0, recurse + 1, pretty); |
2c63a960 JB |
798 | field_physname |
799 | = TYPE_FN_FIELD_PHYSNAME (TYPE_FN_FIELDLIST1 (type, fn), oi); | |
800 | /* pai: (temp) FIXME Maybe this should be DMGL_ANSI */ | |
801 | vf_name = cplus_demangle (field_physname, DMGL_ARM); | |
c5aa993b JM |
802 | fprintf_filtered (stream, " %s", vf_name); |
803 | if (--(*vfuncs) > 0) | |
804 | fputs_filtered (", ", stream); | |
805 | } | |
c906108c SS |
806 | } |
807 | ||
808 | ||
809 | ||
810 | void | |
fba45db2 | 811 | _initialize_cp_valprint (void) |
c906108c | 812 | { |
cb1a6d5f | 813 | deprecated_add_show_from_set |
c906108c | 814 | (add_set_cmd ("static-members", class_support, var_boolean, |
c5aa993b | 815 | (char *) &static_field_print, |
c906108c SS |
816 | "Set printing of C++ static members.", |
817 | &setprintlist), | |
818 | &showprintlist); | |
819 | /* Turn on printing of static fields. */ | |
820 | static_field_print = 1; | |
821 | ||
cb1a6d5f | 822 | deprecated_add_show_from_set |
c5aa993b | 823 | (add_set_cmd ("vtbl", class_support, var_boolean, (char *) &vtblprint, |
c906108c SS |
824 | "Set printing of C++ virtual function tables.", |
825 | &setprintlist), | |
826 | &showprintlist); | |
827 | ||
cb1a6d5f | 828 | deprecated_add_show_from_set |
c5aa993b JM |
829 | (add_set_cmd ("object", class_support, var_boolean, (char *) &objectprint, |
830 | "Set printing of object's derived type based on vtable info.", | |
c906108c SS |
831 | &setprintlist), |
832 | &showprintlist); | |
833 | ||
834 | /* Give people the defaults which they are used to. */ | |
835 | objectprint = 0; | |
836 | vtblprint = 0; | |
837 | obstack_begin (&dont_print_vb_obstack, 32 * sizeof (struct type *)); | |
838 | obstack_specify_allocation (&dont_print_statmem_obstack, | |
839 | 32 * sizeof (CORE_ADDR), sizeof (CORE_ADDR), | |
b8c9b27d | 840 | xmalloc, xfree); |
c906108c | 841 | } |