Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Support for printing C++ values for GDB, the GNU debugger. |
b6ba6518 KB |
2 | Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
3 | 2000 | |
c906108c SS |
4 | Free Software Foundation, Inc. |
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" | |
24 | #include "obstack.h" | |
25 | #include "symtab.h" | |
26 | #include "gdbtypes.h" | |
27 | #include "expression.h" | |
28 | #include "value.h" | |
29 | #include "command.h" | |
30 | #include "gdbcmd.h" | |
31 | #include "demangle.h" | |
32 | #include "annotate.h" | |
33 | #include "gdb_string.h" | |
34 | #include "c-lang.h" | |
35 | #include "target.h" | |
36 | ||
c5aa993b JM |
37 | /* Indication of presence of HP-compiled object files */ |
38 | extern int hp_som_som_object_present; /* defined in symtab.c */ | |
c906108c SS |
39 | |
40 | ||
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 | |
d9fcf2fb JM |
51 | static void cp_print_static_field (struct type *, value_ptr, |
52 | struct ui_file *, int, int, | |
53 | enum val_prettyprint); | |
c906108c | 54 | |
d9fcf2fb JM |
55 | static void cp_print_value (struct type *, struct type *, char *, int, |
56 | CORE_ADDR, struct ui_file *, int, int, | |
57 | enum val_prettyprint, struct type **); | |
c906108c | 58 | |
d9fcf2fb JM |
59 | static void cp_print_hpacc_virtual_table_entries (struct type *, int *, |
60 | value_ptr, | |
61 | struct ui_file *, int, | |
62 | int, | |
63 | enum val_prettyprint); | |
c906108c SS |
64 | |
65 | ||
66 | void | |
fba45db2 | 67 | cp_print_class_method (char *valaddr, struct type *type, struct ui_file *stream) |
c906108c SS |
68 | { |
69 | struct type *domain; | |
70 | struct fn_field *f = NULL; | |
71 | int j = 0; | |
72 | int len2; | |
73 | int offset; | |
74 | char *kind = ""; | |
75 | CORE_ADDR addr; | |
76 | struct symbol *sym; | |
77 | unsigned len; | |
78 | unsigned int i; | |
79 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); | |
80 | ||
81 | domain = TYPE_DOMAIN_TYPE (target_type); | |
c5aa993b | 82 | if (domain == (struct type *) NULL) |
c906108c SS |
83 | { |
84 | fprintf_filtered (stream, "<unknown>"); | |
85 | return; | |
86 | } | |
87 | addr = unpack_pointer (lookup_pointer_type (builtin_type_void), valaddr); | |
88 | if (METHOD_PTR_IS_VIRTUAL (addr)) | |
89 | { | |
90 | offset = METHOD_PTR_TO_VOFFSET (addr); | |
91 | len = TYPE_NFN_FIELDS (domain); | |
92 | for (i = 0; i < len; i++) | |
93 | { | |
94 | f = TYPE_FN_FIELDLIST1 (domain, i); | |
95 | len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); | |
c5aa993b | 96 | |
c906108c SS |
97 | for (j = 0; j < len2; j++) |
98 | { | |
99 | QUIT; | |
100 | if (TYPE_FN_FIELD_VOFFSET (f, j) == offset) | |
101 | { | |
102 | if (TYPE_FN_FIELD_STUB (f, j)) | |
103 | check_stub_method (domain, i, j); | |
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 JM |
115 | /* 1997-08-01 Currently unsupported with HP aCC */ |
116 | if (hp_som_som_object_present) | |
117 | { | |
118 | fputs_filtered ("?? <not supported with HP aCC>", stream); | |
119 | return; | |
120 | } | |
c906108c SS |
121 | error ("invalid pointer to member function"); |
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 | |
c906108c SS |
129 | for (j = 0; j < len2; j++) |
130 | { | |
131 | QUIT; | |
132 | if (TYPE_FN_FIELD_STUB (f, j)) | |
133 | check_stub_method (domain, i, j); | |
134 | if (STREQ (SYMBOL_NAME (sym), TYPE_FN_FIELD_PHYSNAME (f, j))) | |
135 | { | |
136 | goto common; | |
137 | } | |
138 | } | |
139 | } | |
140 | } | |
c5aa993b | 141 | common: |
c906108c SS |
142 | if (i < len) |
143 | { | |
144 | char *demangled_name; | |
145 | ||
146 | fprintf_filtered (stream, "&"); | |
147 | fprintf_filtered (stream, kind); | |
148 | demangled_name = cplus_demangle (TYPE_FN_FIELD_PHYSNAME (f, j), | |
149 | DMGL_ANSI | DMGL_PARAMS); | |
150 | if (demangled_name == NULL) | |
151 | fprintf_filtered (stream, "<badly mangled name %s>", | |
152 | TYPE_FN_FIELD_PHYSNAME (f, j)); | |
153 | else | |
154 | { | |
155 | fputs_filtered (demangled_name, stream); | |
b8c9b27d | 156 | xfree (demangled_name); |
c906108c SS |
157 | } |
158 | } | |
159 | else | |
160 | { | |
161 | fprintf_filtered (stream, "("); | |
162 | type_print (type, "", stream, -1); | |
163 | fprintf_filtered (stream, ") %d", (int) addr >> 3); | |
164 | } | |
165 | } | |
166 | ||
167 | /* This was what it was for gcc 2.4.5 and earlier. */ | |
168 | static const char vtbl_ptr_name_old[] = | |
c5aa993b | 169 | {CPLUS_MARKER, 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; |
c906108c SS |
170 | /* It was changed to this after 2.4.5. */ |
171 | const char vtbl_ptr_name[] = | |
c5aa993b | 172 | {'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; |
c906108c SS |
173 | |
174 | /* HP aCC uses different names */ | |
175 | const char hpacc_vtbl_ptr_name[] = | |
c5aa993b | 176 | {'_', '_', 'v', 'f', 'p', 0}; |
c906108c | 177 | const char hpacc_vtbl_ptr_type_name[] = |
c5aa993b | 178 | {'_', '_', 'v', 'f', 't', 'y', 'p', 0}; |
c906108c SS |
179 | |
180 | ||
181 | /* Return truth value for assertion that TYPE is of the type | |
182 | "pointer to virtual function". */ | |
183 | ||
184 | int | |
fba45db2 | 185 | cp_is_vtbl_ptr_type (struct type *type) |
c906108c SS |
186 | { |
187 | char *typename = type_name_no_tag (type); | |
188 | ||
189 | return (typename != NULL | |
190 | && (STREQ (typename, vtbl_ptr_name) | |
191 | || STREQ (typename, vtbl_ptr_name_old))); | |
192 | } | |
193 | ||
194 | /* Return truth value for the assertion that TYPE is of the type | |
195 | "pointer to virtual function table". */ | |
196 | ||
197 | int | |
fba45db2 | 198 | cp_is_vtbl_member (struct type *type) |
c906108c SS |
199 | { |
200 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
201 | { | |
202 | type = TYPE_TARGET_TYPE (type); | |
203 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
204 | { | |
205 | type = TYPE_TARGET_TYPE (type); | |
c5aa993b JM |
206 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */ |
207 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */ | |
c906108c SS |
208 | { |
209 | /* Virtual functions tables are full of pointers | |
c5aa993b | 210 | to virtual functions. */ |
c906108c SS |
211 | return cp_is_vtbl_ptr_type (type); |
212 | } | |
213 | } | |
214 | } | |
215 | return 0; | |
216 | } | |
217 | ||
218 | /* Mutually recursive subroutines of cp_print_value and c_val_print to | |
219 | print out a structure's fields: cp_print_value_fields and cp_print_value. | |
c5aa993b | 220 | |
c906108c SS |
221 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the |
222 | same meanings as in cp_print_value and c_val_print. | |
223 | ||
224 | 2nd argument REAL_TYPE is used to carry over the type of the derived | |
225 | class across the recursion to base classes. | |
226 | ||
227 | DONT_PRINT is an array of baseclass types that we | |
228 | should not print, or zero if called from top level. */ | |
229 | ||
230 | void | |
fba45db2 KB |
231 | cp_print_value_fields (struct type *type, struct type *real_type, char *valaddr, |
232 | int offset, CORE_ADDR address, struct ui_file *stream, | |
233 | int format, int recurse, enum val_prettyprint pretty, | |
234 | struct type **dont_print_vb, int dont_print_statmem) | |
c906108c SS |
235 | { |
236 | int i, len, n_baseclasses; | |
237 | struct obstack tmp_obstack; | |
238 | char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack); | |
239 | int fields_seen = 0; | |
240 | ||
241 | CHECK_TYPEDEF (type); | |
242 | ||
243 | fprintf_filtered (stream, "{"); | |
244 | len = TYPE_NFIELDS (type); | |
245 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
246 | ||
247 | /* First, print out baseclasses such that we don't print | |
248 | duplicates of virtual baseclasses. */ | |
249 | ||
250 | if (n_baseclasses > 0) | |
251 | cp_print_value (type, real_type, valaddr, offset, address, stream, | |
c5aa993b | 252 | format, recurse + 1, pretty, dont_print_vb); |
c906108c SS |
253 | |
254 | /* Second, print out data fields */ | |
255 | ||
256 | /* If there are no data fields, or if the only field is the | |
c5aa993b | 257 | * vtbl pointer, skip this part */ |
c906108c SS |
258 | if ((len == n_baseclasses) || |
259 | ((len - n_baseclasses == 1) && | |
c5aa993b JM |
260 | TYPE_HAS_VTABLE (type) && |
261 | STREQN (TYPE_FIELD_NAME (type, n_baseclasses), hpacc_vtbl_ptr_name, 5)) || | |
c906108c SS |
262 | !len) |
263 | fprintf_filtered (stream, "<No data fields>"); | |
264 | else | |
265 | { | |
266 | extern int inspect_it; | |
267 | ||
268 | if (dont_print_statmem == 0) | |
269 | { | |
270 | /* If we're at top level, carve out a completely fresh | |
271 | chunk of the obstack and use that until this particular | |
272 | invocation returns. */ | |
273 | tmp_obstack = dont_print_statmem_obstack; | |
274 | obstack_finish (&dont_print_statmem_obstack); | |
275 | } | |
276 | ||
277 | for (i = n_baseclasses; i < len; i++) | |
278 | { | |
279 | /* If requested, skip printing of static fields. */ | |
280 | if (!static_field_print && TYPE_FIELD_STATIC (type, i)) | |
281 | continue; | |
282 | ||
c5aa993b JM |
283 | /* If a vtable pointer appears, we'll print it out later */ |
284 | if (TYPE_HAS_VTABLE (type) && STREQN (TYPE_FIELD_NAME (type, i), hpacc_vtbl_ptr_name, 5)) | |
285 | continue; | |
286 | ||
c906108c SS |
287 | if (fields_seen) |
288 | fprintf_filtered (stream, ", "); | |
289 | else if (n_baseclasses > 0) | |
290 | { | |
291 | if (pretty) | |
292 | { | |
293 | fprintf_filtered (stream, "\n"); | |
294 | print_spaces_filtered (2 + 2 * recurse, stream); | |
295 | fputs_filtered ("members of ", stream); | |
296 | fputs_filtered (type_name_no_tag (type), stream); | |
297 | fputs_filtered (": ", stream); | |
298 | } | |
299 | } | |
300 | fields_seen = 1; | |
301 | ||
302 | if (pretty) | |
303 | { | |
304 | fprintf_filtered (stream, "\n"); | |
305 | print_spaces_filtered (2 + 2 * recurse, stream); | |
306 | } | |
c5aa993b | 307 | else |
c906108c SS |
308 | { |
309 | wrap_here (n_spaces (2 + 2 * recurse)); | |
310 | } | |
311 | if (inspect_it) | |
312 | { | |
313 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR) | |
314 | fputs_filtered ("\"( ptr \"", stream); | |
315 | else | |
316 | fputs_filtered ("\"( nodef \"", stream); | |
317 | if (TYPE_FIELD_STATIC (type, i)) | |
318 | fputs_filtered ("static ", stream); | |
319 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
320 | language_cplus, | |
321 | DMGL_PARAMS | DMGL_ANSI); | |
322 | fputs_filtered ("\" \"", stream); | |
323 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
324 | language_cplus, | |
325 | DMGL_PARAMS | DMGL_ANSI); | |
326 | fputs_filtered ("\") \"", stream); | |
327 | } | |
328 | else | |
329 | { | |
330 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
331 | ||
332 | if (TYPE_FIELD_STATIC (type, i)) | |
333 | fputs_filtered ("static ", stream); | |
334 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
335 | language_cplus, | |
336 | DMGL_PARAMS | DMGL_ANSI); | |
337 | annotate_field_name_end (); | |
338 | /* do not print leading '=' in case of anonymous unions */ | |
339 | if (strcmp (TYPE_FIELD_NAME (type, i), "")) | |
340 | fputs_filtered (" = ", stream); | |
341 | annotate_field_value (); | |
342 | } | |
343 | ||
344 | if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i)) | |
345 | { | |
346 | value_ptr v; | |
347 | ||
348 | /* Bitfields require special handling, especially due to byte | |
c5aa993b | 349 | order problems. */ |
c906108c SS |
350 | if (TYPE_FIELD_IGNORE (type, i)) |
351 | { | |
c5aa993b | 352 | fputs_filtered ("<optimized out or zero length>", stream); |
c906108c SS |
353 | } |
354 | else | |
355 | { | |
c5aa993b JM |
356 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), |
357 | unpack_field_as_long (type, valaddr + offset, i)); | |
c906108c | 358 | |
c5aa993b JM |
359 | val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), 0, 0, |
360 | stream, format, 0, recurse + 1, pretty); | |
c906108c SS |
361 | } |
362 | } | |
363 | else | |
364 | { | |
365 | if (TYPE_FIELD_IGNORE (type, i)) | |
366 | { | |
c5aa993b | 367 | fputs_filtered ("<optimized out or zero length>", stream); |
c906108c SS |
368 | } |
369 | else if (TYPE_FIELD_STATIC (type, i)) | |
370 | { | |
371 | value_ptr v = value_static_field (type, i); | |
372 | if (v == NULL) | |
373 | fputs_filtered ("<optimized out>", stream); | |
374 | else | |
375 | cp_print_static_field (TYPE_FIELD_TYPE (type, i), v, | |
376 | stream, format, recurse + 1, | |
377 | pretty); | |
378 | } | |
379 | else | |
380 | { | |
c5aa993b JM |
381 | val_print (TYPE_FIELD_TYPE (type, i), |
382 | valaddr, offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
383 | address + TYPE_FIELD_BITPOS (type, i) / 8, | |
384 | stream, format, 0, recurse + 1, pretty); | |
c906108c SS |
385 | } |
386 | } | |
387 | annotate_field_end (); | |
388 | } | |
389 | ||
390 | if (dont_print_statmem == 0) | |
391 | { | |
392 | /* Free the space used to deal with the printing | |
393 | of the members from top level. */ | |
394 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
395 | dont_print_statmem_obstack = tmp_obstack; | |
396 | } | |
397 | ||
398 | if (pretty) | |
399 | { | |
400 | fprintf_filtered (stream, "\n"); | |
401 | print_spaces_filtered (2 * recurse, stream); | |
402 | } | |
c5aa993b JM |
403 | } /* if there are data fields */ |
404 | /* Now print out the virtual table pointer if there is one */ | |
405 | if (TYPE_HAS_VTABLE (type) && STREQN (TYPE_FIELD_NAME (type, n_baseclasses), hpacc_vtbl_ptr_name, 5)) | |
c906108c SS |
406 | { |
407 | value_ptr v; | |
c5aa993b | 408 | /* First get the virtual table pointer and print it out */ |
c906108c SS |
409 | |
410 | #if 0 | |
411 | fputs_filtered ("__vfp = ", stream); | |
412 | #endif | |
413 | ||
414 | fputs_filtered (", Virtual table at ", stream); | |
415 | ||
416 | /* pai: FIXME 32x64 problem? */ | |
417 | /* Not sure what the best notation is in the case where there is no | |
418 | baseclass name. */ | |
4478b372 | 419 | v = value_from_pointer (lookup_pointer_type (builtin_type_unsigned_long), |
c5aa993b | 420 | *(unsigned long *) (valaddr + offset)); |
c906108c SS |
421 | |
422 | val_print (VALUE_TYPE (v), VALUE_CONTENTS (v), 0, 0, | |
c5aa993b | 423 | stream, format, 0, recurse + 1, pretty); |
c906108c SS |
424 | fields_seen = 1; |
425 | ||
426 | if (vtblprint) | |
c5aa993b JM |
427 | { |
428 | /* Print out function pointers in vtable. */ | |
c906108c | 429 | |
c5aa993b JM |
430 | /* FIXME: then-clause is for non-RRBC layout of virtual |
431 | * table. The RRBC case in the else-clause is yet to be | |
432 | * implemented. The if (1) below should be changed to a | |
433 | * test for whether the executable we have was compiled | |
434 | * with a version of HP aCC that doesn't have RRBC | |
435 | * support. */ | |
c906108c | 436 | |
c5aa993b JM |
437 | if (1) |
438 | { | |
439 | /* no RRBC support; function pointers embedded directly in vtable */ | |
c906108c | 440 | |
c5aa993b | 441 | int vfuncs = count_virtual_fns (real_type); |
c906108c | 442 | |
c5aa993b | 443 | fputs_filtered (" {", stream); |
c906108c | 444 | |
c5aa993b | 445 | /* FIXME : doesn't work at present */ |
c906108c | 446 | #if 0 |
c5aa993b | 447 | fprintf_filtered (stream, "%d entr%s: ", vfuncs, vfuncs == 1 ? "y" : "ies"); |
c906108c | 448 | #else |
c5aa993b | 449 | fputs_filtered ("not implemented", stream); |
c906108c SS |
450 | |
451 | ||
452 | #endif | |
453 | ||
c5aa993b | 454 | /* recursive function that prints all virtual function entries */ |
c906108c | 455 | #if 0 |
c5aa993b | 456 | cp_print_hpacc_virtual_table_entries (real_type, &vfuncs, v, stream, format, recurse, pretty); |
c906108c | 457 | #endif |
c5aa993b JM |
458 | fputs_filtered ("}", stream); |
459 | } /* non-RRBC case */ | |
460 | else | |
461 | { | |
4d33f415 | 462 | /* FIXME -- see comments above */ |
c5aa993b JM |
463 | /* RRBC support present; function pointers are found |
464 | * by indirection through the class segment entries. */ | |
465 | ||
466 | ||
467 | } /* RRBC case */ | |
468 | } /* if vtblprint */ | |
c906108c SS |
469 | |
470 | if (pretty) | |
471 | { | |
472 | fprintf_filtered (stream, "\n"); | |
473 | print_spaces_filtered (2 * recurse, stream); | |
474 | } | |
475 | ||
c5aa993b JM |
476 | } /* if vtable exists */ |
477 | ||
c906108c SS |
478 | fprintf_filtered (stream, "}"); |
479 | } | |
480 | ||
481 | /* Special val_print routine to avoid printing multiple copies of virtual | |
482 | baseclasses. */ | |
483 | ||
484 | static void | |
fba45db2 KB |
485 | cp_print_value (struct type *type, struct type *real_type, char *valaddr, |
486 | int offset, CORE_ADDR address, struct ui_file *stream, | |
487 | int format, int recurse, enum val_prettyprint pretty, | |
488 | struct type **dont_print_vb) | |
c906108c SS |
489 | { |
490 | struct obstack tmp_obstack; | |
491 | struct type **last_dont_print | |
c5aa993b | 492 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); |
c906108c SS |
493 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); |
494 | ||
495 | if (dont_print_vb == 0) | |
496 | { | |
497 | /* If we're at top level, carve out a completely fresh | |
c5aa993b JM |
498 | chunk of the obstack and use that until this particular |
499 | invocation returns. */ | |
c906108c SS |
500 | tmp_obstack = dont_print_vb_obstack; |
501 | /* Bump up the high-water mark. Now alpha is omega. */ | |
502 | obstack_finish (&dont_print_vb_obstack); | |
503 | } | |
504 | ||
505 | for (i = 0; i < n_baseclasses; i++) | |
506 | { | |
507 | int boffset; | |
508 | int skip; | |
509 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); | |
510 | char *basename = TYPE_NAME (baseclass); | |
511 | char *base_valaddr; | |
512 | ||
513 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
514 | { | |
515 | struct type **first_dont_print | |
c5aa993b | 516 | = (struct type **) obstack_base (&dont_print_vb_obstack); |
c906108c | 517 | |
c5aa993b JM |
518 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) |
519 | - first_dont_print; | |
c906108c SS |
520 | |
521 | while (--j >= 0) | |
522 | if (baseclass == first_dont_print[j]) | |
523 | goto flush_it; | |
524 | ||
525 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
526 | } | |
527 | ||
528 | if (TYPE_HAS_VTABLE (type) && BASETYPE_VIA_VIRTUAL (type, i)) | |
c5aa993b JM |
529 | { |
530 | /* Assume HP/Taligent runtime convention */ | |
531 | find_rt_vbase_offset (type, TYPE_BASECLASS (type, i), | |
532 | valaddr, offset, &boffset, &skip); | |
533 | if (skip >= 0) | |
534 | error ("Virtual base class offset not found from vtable while printing"); | |
535 | base_valaddr = valaddr; | |
536 | } | |
c906108c | 537 | else |
c5aa993b JM |
538 | { |
539 | boffset = baseclass_offset (type, i, valaddr + offset, address + offset); | |
540 | skip = ((boffset == -1) || (boffset + offset) < 0) ? 1 : -1; | |
c906108c | 541 | |
c5aa993b JM |
542 | if (BASETYPE_VIA_VIRTUAL (type, i)) |
543 | { | |
544 | /* The virtual base class pointer might have been clobbered by the | |
c906108c SS |
545 | user program. Make sure that it still points to a valid memory |
546 | location. */ | |
547 | ||
c5aa993b JM |
548 | if (boffset != -1 && ((boffset + offset) < 0 || (boffset + offset) >= TYPE_LENGTH (type))) |
549 | { | |
550 | base_valaddr = (char *) alloca (TYPE_LENGTH (baseclass)); | |
551 | if (target_read_memory (address + boffset, base_valaddr, | |
552 | TYPE_LENGTH (baseclass)) != 0) | |
553 | skip = 1; | |
554 | } | |
555 | else | |
556 | base_valaddr = valaddr; | |
557 | } | |
558 | else | |
559 | base_valaddr = valaddr; | |
c906108c SS |
560 | } |
561 | ||
562 | /* now do the printing */ | |
563 | if (pretty) | |
564 | { | |
565 | fprintf_filtered (stream, "\n"); | |
566 | print_spaces_filtered (2 * recurse, stream); | |
567 | } | |
568 | fputs_filtered ("<", stream); | |
569 | /* Not sure what the best notation is in the case where there is no | |
c5aa993b | 570 | baseclass name. */ |
c906108c SS |
571 | fputs_filtered (basename ? basename : "", stream); |
572 | fputs_filtered ("> = ", stream); | |
573 | ||
574 | ||
575 | if (skip >= 1) | |
576 | fprintf_filtered (stream, "<invalid address>"); | |
577 | else | |
578 | cp_print_value_fields (baseclass, real_type, base_valaddr, offset + boffset, address, | |
579 | stream, format, recurse, pretty, | |
c5aa993b | 580 | (struct type **) obstack_base (&dont_print_vb_obstack), |
c906108c SS |
581 | 0); |
582 | fputs_filtered (", ", stream); | |
583 | ||
584 | flush_it: | |
585 | ; | |
586 | } | |
587 | ||
588 | if (dont_print_vb == 0) | |
589 | { | |
590 | /* Free the space used to deal with the printing | |
c5aa993b | 591 | of this type from top level. */ |
c906108c SS |
592 | obstack_free (&dont_print_vb_obstack, last_dont_print); |
593 | /* Reset watermark so that we can continue protecting | |
c5aa993b | 594 | ourselves from whatever we were protecting ourselves. */ |
c906108c SS |
595 | dont_print_vb_obstack = tmp_obstack; |
596 | } | |
597 | } | |
598 | ||
599 | /* Print value of a static member. | |
600 | To avoid infinite recursion when printing a class that contains | |
601 | a static instance of the class, we keep the addresses of all printed | |
602 | static member classes in an obstack and refuse to print them more | |
603 | than once. | |
604 | ||
605 | VAL contains the value to print, TYPE, STREAM, RECURSE, and PRETTY | |
606 | have the same meanings as in c_val_print. */ | |
607 | ||
608 | static void | |
fba45db2 KB |
609 | cp_print_static_field (struct type *type, value_ptr val, struct ui_file *stream, |
610 | int format, int recurse, enum val_prettyprint pretty) | |
c906108c SS |
611 | { |
612 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
613 | { | |
614 | CORE_ADDR *first_dont_print; | |
615 | int i; | |
616 | ||
617 | first_dont_print | |
c5aa993b JM |
618 | = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); |
619 | i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) | |
c906108c SS |
620 | - first_dont_print; |
621 | ||
622 | while (--i >= 0) | |
623 | { | |
624 | if (VALUE_ADDRESS (val) == first_dont_print[i]) | |
625 | { | |
626 | fputs_filtered ("<same as static member of an already seen type>", | |
627 | stream); | |
628 | return; | |
629 | } | |
630 | } | |
631 | ||
632 | obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val), | |
633 | sizeof (CORE_ADDR)); | |
634 | ||
635 | CHECK_TYPEDEF (type); | |
636 | cp_print_value_fields (type, type, VALUE_CONTENTS_ALL (val), VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val), | |
637 | stream, format, recurse, pretty, NULL, 1); | |
638 | return; | |
639 | } | |
640 | val_print (type, VALUE_CONTENTS_ALL (val), VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val), | |
641 | stream, format, 0, recurse, pretty); | |
642 | } | |
643 | ||
644 | void | |
fba45db2 KB |
645 | cp_print_class_member (char *valaddr, struct type *domain, |
646 | struct ui_file *stream, char *prefix) | |
c906108c | 647 | { |
c5aa993b | 648 | |
c906108c SS |
649 | /* VAL is a byte offset into the structure type DOMAIN. |
650 | Find the name of the field for that offset and | |
651 | print it. */ | |
652 | int extra = 0; | |
653 | int bits = 0; | |
654 | register unsigned int i; | |
655 | unsigned len = TYPE_NFIELDS (domain); | |
656 | ||
657 | /* @@ Make VAL into bit offset */ | |
658 | ||
659 | /* Note: HP aCC generates offsets that are the real byte offsets added | |
660 | to a constant bias 0x20000000 (1 << 29). This constant bias gets | |
661 | shifted out in the code below -- joyous happenstance! */ | |
662 | ||
663 | /* Note: HP cfront uses a constant bias of 1; if we support this | |
c5aa993b JM |
664 | compiler ever, we will have to adjust the computation below */ |
665 | ||
c906108c SS |
666 | LONGEST val = unpack_long (builtin_type_int, valaddr) << 3; |
667 | for (i = TYPE_N_BASECLASSES (domain); i < len; i++) | |
668 | { | |
669 | int bitpos = TYPE_FIELD_BITPOS (domain, i); | |
670 | QUIT; | |
671 | if (val == bitpos) | |
672 | break; | |
673 | if (val < bitpos && i != 0) | |
674 | { | |
675 | /* Somehow pointing into a field. */ | |
676 | i -= 1; | |
677 | extra = (val - TYPE_FIELD_BITPOS (domain, i)); | |
678 | if (extra & 0x7) | |
679 | bits = 1; | |
680 | else | |
681 | extra >>= 3; | |
682 | break; | |
683 | } | |
684 | } | |
685 | if (i < len) | |
686 | { | |
687 | char *name; | |
688 | fprintf_filtered (stream, prefix); | |
689 | name = type_name_no_tag (domain); | |
690 | if (name) | |
c5aa993b | 691 | fputs_filtered (name, stream); |
c906108c SS |
692 | else |
693 | c_type_print_base (domain, stream, 0, 0); | |
694 | fprintf_filtered (stream, "::"); | |
695 | fputs_filtered (TYPE_FIELD_NAME (domain, i), stream); | |
696 | if (extra) | |
697 | fprintf_filtered (stream, " + %d bytes", extra); | |
698 | if (bits) | |
699 | fprintf_filtered (stream, " (offset in bits)"); | |
700 | } | |
701 | else | |
d4f3574e | 702 | fprintf_filtered (stream, "%ld", (long) (val >> 3)); |
c906108c SS |
703 | } |
704 | ||
705 | ||
706 | /* This function prints out virtual table entries for a class; it | |
707 | * recurses on the base classes to find all virtual functions | |
708 | * available in a class. | |
709 | * | |
710 | * pai/1997-05-21 Note: As the name suggests, it's currently | |
711 | * implemented for HP aCC runtime only. g++ objects are handled | |
712 | * differently and I have made no attempt to fold that logic in | |
713 | * here. The runtime layout is different for the two cases. Also, | |
714 | * this currently has only the code for non-RRBC layouts generated by | |
715 | * the HP aCC compiler; RRBC code is stubbed out and will have to be | |
716 | * added later. */ | |
c5aa993b | 717 | |
c906108c SS |
718 | |
719 | static void | |
fba45db2 KB |
720 | cp_print_hpacc_virtual_table_entries (struct type *type, int *vfuncs, |
721 | value_ptr v, struct ui_file *stream, | |
722 | int format, int recurse, | |
723 | enum val_prettyprint pretty) | |
c906108c SS |
724 | { |
725 | int fn, oi; | |
726 | ||
727 | /* pai: FIXME this function doesn't work. It should handle a given | |
728 | * virtual function only once (latest redefinition in class hierarchy) | |
729 | */ | |
730 | ||
c5aa993b JM |
731 | /* Recursion on other classes that can share the same vtable */ |
732 | struct type *pbc = primary_base_class (type); | |
c906108c SS |
733 | if (pbc) |
734 | cp_print_hpacc_virtual_table_entries (pbc, vfuncs, v, stream, format, recurse, pretty); | |
c5aa993b | 735 | |
c906108c SS |
736 | /* Now deal with vfuncs declared in this class */ |
737 | for (fn = 0; fn < TYPE_NFN_FIELDS (type); fn++) | |
738 | for (oi = 0; oi < TYPE_FN_FIELDLIST_LENGTH (type, fn); oi++) | |
739 | if (TYPE_FN_FIELD_VIRTUAL_P (TYPE_FN_FIELDLIST1 (type, fn), oi)) | |
c5aa993b JM |
740 | { |
741 | char *vf_name; | |
742 | ||
743 | /* virtual function offset */ | |
744 | int vx = TYPE_FN_FIELD_VOFFSET (TYPE_FN_FIELDLIST1 (type, fn), oi) - 1; | |
745 | ||
746 | /* Get the address of the vfunction entry */ | |
747 | value_ptr vf = value_copy (v); | |
748 | if (VALUE_LAZY (vf)) | |
749 | (void) value_fetch_lazy (vf); | |
750 | vf->aligner.contents[0] += 4 * (HP_ACC_VFUNC_START + vx); /* adjust by offset */ | |
751 | vf = value_ind (vf); /* get the entry */ | |
752 | VALUE_TYPE (vf) = VALUE_TYPE (v); /* make it a pointer */ | |
753 | ||
754 | /* print out the entry */ | |
755 | val_print (VALUE_TYPE (vf), VALUE_CONTENTS (vf), 0, 0, | |
756 | stream, format, 0, recurse + 1, pretty); | |
757 | vf_name = cplus_demangle (TYPE_FN_FIELD_PHYSNAME (TYPE_FN_FIELDLIST1 (type, fn), oi), | |
758 | DMGL_ARM); /* pai: (temp) FIXME Maybe this should be DMGL_ANSI */ | |
759 | fprintf_filtered (stream, " %s", vf_name); | |
760 | if (--(*vfuncs) > 0) | |
761 | fputs_filtered (", ", stream); | |
762 | } | |
c906108c SS |
763 | } |
764 | ||
765 | ||
766 | ||
767 | void | |
fba45db2 | 768 | _initialize_cp_valprint (void) |
c906108c SS |
769 | { |
770 | add_show_from_set | |
771 | (add_set_cmd ("static-members", class_support, var_boolean, | |
c5aa993b | 772 | (char *) &static_field_print, |
c906108c SS |
773 | "Set printing of C++ static members.", |
774 | &setprintlist), | |
775 | &showprintlist); | |
776 | /* Turn on printing of static fields. */ | |
777 | static_field_print = 1; | |
778 | ||
779 | add_show_from_set | |
c5aa993b | 780 | (add_set_cmd ("vtbl", class_support, var_boolean, (char *) &vtblprint, |
c906108c SS |
781 | "Set printing of C++ virtual function tables.", |
782 | &setprintlist), | |
783 | &showprintlist); | |
784 | ||
785 | add_show_from_set | |
c5aa993b JM |
786 | (add_set_cmd ("object", class_support, var_boolean, (char *) &objectprint, |
787 | "Set printing of object's derived type based on vtable info.", | |
c906108c SS |
788 | &setprintlist), |
789 | &showprintlist); | |
790 | ||
791 | /* Give people the defaults which they are used to. */ | |
792 | objectprint = 0; | |
793 | vtblprint = 0; | |
794 | obstack_begin (&dont_print_vb_obstack, 32 * sizeof (struct type *)); | |
795 | obstack_specify_allocation (&dont_print_statmem_obstack, | |
796 | 32 * sizeof (CORE_ADDR), sizeof (CORE_ADDR), | |
b8c9b27d | 797 | xmalloc, xfree); |
c906108c | 798 | } |