Commit | Line | Data |
---|---|---|
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 | ||
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
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. | |
c906108c | 11 | |
c5aa993b JM |
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. | |
c906108c | 16 | |
c5aa993b JM |
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, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include "obstack.h" | |
24 | #include "symtab.h" | |
25 | #include "gdbtypes.h" | |
26 | #include "expression.h" | |
27 | #include "value.h" | |
28 | #include "command.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "demangle.h" | |
31 | #include "annotate.h" | |
32 | #include "gdb_string.h" | |
33 | #include "c-lang.h" | |
34 | #include "target.h" | |
35 | ||
c5aa993b JM |
36 | /* Indication of presence of HP-compiled object files */ |
37 | extern int hp_som_som_object_present; /* defined in symtab.c */ | |
c906108c SS |
38 | |
39 | ||
40 | int vtblprint; /* Controls printing of vtbl's */ | |
41 | int objectprint; /* Controls looking up an object's derived type | |
42 | using what we find in its vtables. */ | |
c5aa993b | 43 | int static_field_print; /* Controls printing of static fields. */ |
c906108c SS |
44 | |
45 | static struct obstack dont_print_vb_obstack; | |
46 | static struct obstack dont_print_statmem_obstack; | |
47 | ||
392a587b JM |
48 | extern void _initialize_cp_valprint PARAMS ((void)); |
49 | ||
c906108c SS |
50 | static void |
51 | cp_print_static_field PARAMS ((struct type *, value_ptr, GDB_FILE *, int, int, | |
52 | enum val_prettyprint)); | |
53 | ||
54 | static void | |
55 | cp_print_value PARAMS ((struct type *, struct type *, char *, int, CORE_ADDR, GDB_FILE *, | |
56 | int, int, enum val_prettyprint, struct type **)); | |
57 | ||
58 | static void | |
59 | cp_print_hpacc_virtual_table_entries PARAMS ((struct type *, int *, value_ptr, GDB_FILE *, | |
c5aa993b | 60 | int, int, enum val_prettyprint)); |
c906108c SS |
61 | |
62 | ||
63 | void | |
64 | cp_print_class_method (valaddr, type, stream) | |
65 | char *valaddr; | |
66 | struct type *type; | |
67 | GDB_FILE *stream; | |
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); | |
156 | free (demangled_name); | |
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 | |
c5aa993b | 185 | cp_is_vtbl_ptr_type (type) |
c906108c SS |
186 | struct type *type; |
187 | { | |
188 | char *typename = type_name_no_tag (type); | |
189 | ||
190 | return (typename != NULL | |
191 | && (STREQ (typename, vtbl_ptr_name) | |
192 | || STREQ (typename, vtbl_ptr_name_old))); | |
193 | } | |
194 | ||
195 | /* Return truth value for the assertion that TYPE is of the type | |
196 | "pointer to virtual function table". */ | |
197 | ||
198 | int | |
c5aa993b | 199 | cp_is_vtbl_member (type) |
c906108c SS |
200 | struct type *type; |
201 | { | |
202 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
203 | { | |
204 | type = TYPE_TARGET_TYPE (type); | |
205 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
206 | { | |
207 | type = TYPE_TARGET_TYPE (type); | |
c5aa993b JM |
208 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */ |
209 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */ | |
c906108c SS |
210 | { |
211 | /* Virtual functions tables are full of pointers | |
c5aa993b | 212 | to virtual functions. */ |
c906108c SS |
213 | return cp_is_vtbl_ptr_type (type); |
214 | } | |
215 | } | |
216 | } | |
217 | return 0; | |
218 | } | |
219 | ||
220 | /* Mutually recursive subroutines of cp_print_value and c_val_print to | |
221 | print out a structure's fields: cp_print_value_fields and cp_print_value. | |
c5aa993b | 222 | |
c906108c SS |
223 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the |
224 | same meanings as in cp_print_value and c_val_print. | |
225 | ||
226 | 2nd argument REAL_TYPE is used to carry over the type of the derived | |
227 | class across the recursion to base classes. | |
228 | ||
229 | DONT_PRINT is an array of baseclass types that we | |
230 | should not print, or zero if called from top level. */ | |
231 | ||
232 | void | |
233 | cp_print_value_fields (type, real_type, valaddr, offset, address, stream, format, recurse, pretty, | |
234 | dont_print_vb, dont_print_statmem) | |
235 | struct type *type; | |
236 | struct type *real_type; | |
237 | char *valaddr; | |
238 | int offset; | |
239 | CORE_ADDR address; | |
240 | GDB_FILE *stream; | |
241 | int format; | |
242 | int recurse; | |
243 | enum val_prettyprint pretty; | |
244 | struct type **dont_print_vb; | |
245 | int dont_print_statmem; | |
246 | { | |
247 | int i, len, n_baseclasses; | |
248 | struct obstack tmp_obstack; | |
249 | char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack); | |
250 | int fields_seen = 0; | |
251 | ||
252 | CHECK_TYPEDEF (type); | |
253 | ||
254 | fprintf_filtered (stream, "{"); | |
255 | len = TYPE_NFIELDS (type); | |
256 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
257 | ||
258 | /* First, print out baseclasses such that we don't print | |
259 | duplicates of virtual baseclasses. */ | |
260 | ||
261 | if (n_baseclasses > 0) | |
262 | cp_print_value (type, real_type, valaddr, offset, address, stream, | |
c5aa993b | 263 | format, recurse + 1, pretty, dont_print_vb); |
c906108c SS |
264 | |
265 | /* Second, print out data fields */ | |
266 | ||
267 | /* If there are no data fields, or if the only field is the | |
c5aa993b | 268 | * vtbl pointer, skip this part */ |
c906108c SS |
269 | if ((len == n_baseclasses) || |
270 | ((len - n_baseclasses == 1) && | |
c5aa993b JM |
271 | TYPE_HAS_VTABLE (type) && |
272 | STREQN (TYPE_FIELD_NAME (type, n_baseclasses), hpacc_vtbl_ptr_name, 5)) || | |
c906108c SS |
273 | !len) |
274 | fprintf_filtered (stream, "<No data fields>"); | |
275 | else | |
276 | { | |
277 | extern int inspect_it; | |
278 | ||
279 | if (dont_print_statmem == 0) | |
280 | { | |
281 | /* If we're at top level, carve out a completely fresh | |
282 | chunk of the obstack and use that until this particular | |
283 | invocation returns. */ | |
284 | tmp_obstack = dont_print_statmem_obstack; | |
285 | obstack_finish (&dont_print_statmem_obstack); | |
286 | } | |
287 | ||
288 | for (i = n_baseclasses; i < len; i++) | |
289 | { | |
290 | /* If requested, skip printing of static fields. */ | |
291 | if (!static_field_print && TYPE_FIELD_STATIC (type, i)) | |
292 | continue; | |
293 | ||
c5aa993b JM |
294 | /* If a vtable pointer appears, we'll print it out later */ |
295 | if (TYPE_HAS_VTABLE (type) && STREQN (TYPE_FIELD_NAME (type, i), hpacc_vtbl_ptr_name, 5)) | |
296 | continue; | |
297 | ||
c906108c SS |
298 | if (fields_seen) |
299 | fprintf_filtered (stream, ", "); | |
300 | else if (n_baseclasses > 0) | |
301 | { | |
302 | if (pretty) | |
303 | { | |
304 | fprintf_filtered (stream, "\n"); | |
305 | print_spaces_filtered (2 + 2 * recurse, stream); | |
306 | fputs_filtered ("members of ", stream); | |
307 | fputs_filtered (type_name_no_tag (type), stream); | |
308 | fputs_filtered (": ", stream); | |
309 | } | |
310 | } | |
311 | fields_seen = 1; | |
312 | ||
313 | if (pretty) | |
314 | { | |
315 | fprintf_filtered (stream, "\n"); | |
316 | print_spaces_filtered (2 + 2 * recurse, stream); | |
317 | } | |
c5aa993b | 318 | else |
c906108c SS |
319 | { |
320 | wrap_here (n_spaces (2 + 2 * recurse)); | |
321 | } | |
322 | if (inspect_it) | |
323 | { | |
324 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR) | |
325 | fputs_filtered ("\"( ptr \"", stream); | |
326 | else | |
327 | fputs_filtered ("\"( nodef \"", stream); | |
328 | if (TYPE_FIELD_STATIC (type, i)) | |
329 | fputs_filtered ("static ", stream); | |
330 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
331 | language_cplus, | |
332 | DMGL_PARAMS | DMGL_ANSI); | |
333 | fputs_filtered ("\" \"", stream); | |
334 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
335 | language_cplus, | |
336 | DMGL_PARAMS | DMGL_ANSI); | |
337 | fputs_filtered ("\") \"", stream); | |
338 | } | |
339 | else | |
340 | { | |
341 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
342 | ||
343 | if (TYPE_FIELD_STATIC (type, i)) | |
344 | fputs_filtered ("static ", stream); | |
345 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
346 | language_cplus, | |
347 | DMGL_PARAMS | DMGL_ANSI); | |
348 | annotate_field_name_end (); | |
349 | /* do not print leading '=' in case of anonymous unions */ | |
350 | if (strcmp (TYPE_FIELD_NAME (type, i), "")) | |
351 | fputs_filtered (" = ", stream); | |
352 | annotate_field_value (); | |
353 | } | |
354 | ||
355 | if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i)) | |
356 | { | |
357 | value_ptr v; | |
358 | ||
359 | /* Bitfields require special handling, especially due to byte | |
c5aa993b | 360 | order problems. */ |
c906108c SS |
361 | if (TYPE_FIELD_IGNORE (type, i)) |
362 | { | |
c5aa993b | 363 | fputs_filtered ("<optimized out or zero length>", stream); |
c906108c SS |
364 | } |
365 | else | |
366 | { | |
c5aa993b JM |
367 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), |
368 | unpack_field_as_long (type, valaddr + offset, i)); | |
c906108c | 369 | |
c5aa993b JM |
370 | val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), 0, 0, |
371 | stream, format, 0, recurse + 1, pretty); | |
c906108c SS |
372 | } |
373 | } | |
374 | else | |
375 | { | |
376 | if (TYPE_FIELD_IGNORE (type, i)) | |
377 | { | |
c5aa993b | 378 | fputs_filtered ("<optimized out or zero length>", stream); |
c906108c SS |
379 | } |
380 | else if (TYPE_FIELD_STATIC (type, i)) | |
381 | { | |
382 | value_ptr v = value_static_field (type, i); | |
383 | if (v == NULL) | |
384 | fputs_filtered ("<optimized out>", stream); | |
385 | else | |
386 | cp_print_static_field (TYPE_FIELD_TYPE (type, i), v, | |
387 | stream, format, recurse + 1, | |
388 | pretty); | |
389 | } | |
390 | else | |
391 | { | |
c5aa993b JM |
392 | val_print (TYPE_FIELD_TYPE (type, i), |
393 | valaddr, offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
394 | address + TYPE_FIELD_BITPOS (type, i) / 8, | |
395 | stream, format, 0, recurse + 1, pretty); | |
c906108c SS |
396 | } |
397 | } | |
398 | annotate_field_end (); | |
399 | } | |
400 | ||
401 | if (dont_print_statmem == 0) | |
402 | { | |
403 | /* Free the space used to deal with the printing | |
404 | of the members from top level. */ | |
405 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
406 | dont_print_statmem_obstack = tmp_obstack; | |
407 | } | |
408 | ||
409 | if (pretty) | |
410 | { | |
411 | fprintf_filtered (stream, "\n"); | |
412 | print_spaces_filtered (2 * recurse, stream); | |
413 | } | |
c5aa993b JM |
414 | } /* if there are data fields */ |
415 | /* Now print out the virtual table pointer if there is one */ | |
416 | if (TYPE_HAS_VTABLE (type) && STREQN (TYPE_FIELD_NAME (type, n_baseclasses), hpacc_vtbl_ptr_name, 5)) | |
c906108c SS |
417 | { |
418 | value_ptr v; | |
c5aa993b | 419 | /* First get the virtual table pointer and print it out */ |
c906108c SS |
420 | |
421 | #if 0 | |
422 | fputs_filtered ("__vfp = ", stream); | |
423 | #endif | |
424 | ||
425 | fputs_filtered (", Virtual table at ", stream); | |
426 | ||
427 | /* pai: FIXME 32x64 problem? */ | |
428 | /* Not sure what the best notation is in the case where there is no | |
429 | baseclass name. */ | |
430 | v = value_from_longest (lookup_pointer_type (builtin_type_unsigned_long), | |
c5aa993b | 431 | *(unsigned long *) (valaddr + offset)); |
c906108c SS |
432 | |
433 | val_print (VALUE_TYPE (v), VALUE_CONTENTS (v), 0, 0, | |
c5aa993b | 434 | stream, format, 0, recurse + 1, pretty); |
c906108c SS |
435 | fields_seen = 1; |
436 | ||
437 | if (vtblprint) | |
c5aa993b JM |
438 | { |
439 | /* Print out function pointers in vtable. */ | |
c906108c | 440 | |
c5aa993b JM |
441 | /* FIXME: then-clause is for non-RRBC layout of virtual |
442 | * table. The RRBC case in the else-clause is yet to be | |
443 | * implemented. The if (1) below should be changed to a | |
444 | * test for whether the executable we have was compiled | |
445 | * with a version of HP aCC that doesn't have RRBC | |
446 | * support. */ | |
c906108c | 447 | |
c5aa993b JM |
448 | if (1) |
449 | { | |
450 | /* no RRBC support; function pointers embedded directly in vtable */ | |
c906108c | 451 | |
c5aa993b | 452 | int vfuncs = count_virtual_fns (real_type); |
c906108c | 453 | |
c5aa993b | 454 | fputs_filtered (" {", stream); |
c906108c | 455 | |
c5aa993b | 456 | /* FIXME : doesn't work at present */ |
c906108c | 457 | #if 0 |
c5aa993b | 458 | fprintf_filtered (stream, "%d entr%s: ", vfuncs, vfuncs == 1 ? "y" : "ies"); |
c906108c | 459 | #else |
c5aa993b | 460 | fputs_filtered ("not implemented", stream); |
c906108c SS |
461 | |
462 | ||
463 | #endif | |
464 | ||
c5aa993b | 465 | /* recursive function that prints all virtual function entries */ |
c906108c | 466 | #if 0 |
c5aa993b | 467 | cp_print_hpacc_virtual_table_entries (real_type, &vfuncs, v, stream, format, recurse, pretty); |
c906108c | 468 | #endif |
c5aa993b JM |
469 | fputs_filtered ("}", stream); |
470 | } /* non-RRBC case */ | |
471 | else | |
472 | { | |
473 | /* FIXME -- seem comments above */ | |
474 | /* RRBC support present; function pointers are found | |
475 | * by indirection through the class segment entries. */ | |
476 | ||
477 | ||
478 | } /* RRBC case */ | |
479 | } /* if vtblprint */ | |
c906108c SS |
480 | |
481 | if (pretty) | |
482 | { | |
483 | fprintf_filtered (stream, "\n"); | |
484 | print_spaces_filtered (2 * recurse, stream); | |
485 | } | |
486 | ||
c5aa993b JM |
487 | } /* if vtable exists */ |
488 | ||
c906108c SS |
489 | fprintf_filtered (stream, "}"); |
490 | } | |
491 | ||
492 | /* Special val_print routine to avoid printing multiple copies of virtual | |
493 | baseclasses. */ | |
494 | ||
495 | static void | |
496 | cp_print_value (type, real_type, valaddr, offset, address, stream, format, recurse, pretty, | |
497 | dont_print_vb) | |
498 | struct type *type; | |
499 | struct type *real_type; | |
500 | char *valaddr; | |
501 | int offset; | |
502 | CORE_ADDR address; | |
503 | GDB_FILE *stream; | |
504 | int format; | |
505 | int recurse; | |
506 | enum val_prettyprint pretty; | |
507 | struct type **dont_print_vb; | |
508 | { | |
509 | struct obstack tmp_obstack; | |
510 | struct type **last_dont_print | |
c5aa993b | 511 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); |
c906108c SS |
512 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); |
513 | ||
514 | if (dont_print_vb == 0) | |
515 | { | |
516 | /* If we're at top level, carve out a completely fresh | |
c5aa993b JM |
517 | chunk of the obstack and use that until this particular |
518 | invocation returns. */ | |
c906108c SS |
519 | tmp_obstack = dont_print_vb_obstack; |
520 | /* Bump up the high-water mark. Now alpha is omega. */ | |
521 | obstack_finish (&dont_print_vb_obstack); | |
522 | } | |
523 | ||
524 | for (i = 0; i < n_baseclasses; i++) | |
525 | { | |
526 | int boffset; | |
527 | int skip; | |
528 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); | |
529 | char *basename = TYPE_NAME (baseclass); | |
530 | char *base_valaddr; | |
531 | ||
532 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
533 | { | |
534 | struct type **first_dont_print | |
c5aa993b | 535 | = (struct type **) obstack_base (&dont_print_vb_obstack); |
c906108c | 536 | |
c5aa993b JM |
537 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) |
538 | - first_dont_print; | |
c906108c SS |
539 | |
540 | while (--j >= 0) | |
541 | if (baseclass == first_dont_print[j]) | |
542 | goto flush_it; | |
543 | ||
544 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
545 | } | |
546 | ||
547 | if (TYPE_HAS_VTABLE (type) && BASETYPE_VIA_VIRTUAL (type, i)) | |
c5aa993b JM |
548 | { |
549 | /* Assume HP/Taligent runtime convention */ | |
550 | find_rt_vbase_offset (type, TYPE_BASECLASS (type, i), | |
551 | valaddr, offset, &boffset, &skip); | |
552 | if (skip >= 0) | |
553 | error ("Virtual base class offset not found from vtable while printing"); | |
554 | base_valaddr = valaddr; | |
555 | } | |
c906108c | 556 | else |
c5aa993b JM |
557 | { |
558 | boffset = baseclass_offset (type, i, valaddr + offset, address + offset); | |
559 | skip = ((boffset == -1) || (boffset + offset) < 0) ? 1 : -1; | |
c906108c | 560 | |
c5aa993b JM |
561 | if (BASETYPE_VIA_VIRTUAL (type, i)) |
562 | { | |
563 | /* The virtual base class pointer might have been clobbered by the | |
c906108c SS |
564 | user program. Make sure that it still points to a valid memory |
565 | location. */ | |
566 | ||
c5aa993b JM |
567 | if (boffset != -1 && ((boffset + offset) < 0 || (boffset + offset) >= TYPE_LENGTH (type))) |
568 | { | |
569 | base_valaddr = (char *) alloca (TYPE_LENGTH (baseclass)); | |
570 | if (target_read_memory (address + boffset, base_valaddr, | |
571 | TYPE_LENGTH (baseclass)) != 0) | |
572 | skip = 1; | |
573 | } | |
574 | else | |
575 | base_valaddr = valaddr; | |
576 | } | |
577 | else | |
578 | base_valaddr = valaddr; | |
c906108c SS |
579 | } |
580 | ||
581 | /* now do the printing */ | |
582 | if (pretty) | |
583 | { | |
584 | fprintf_filtered (stream, "\n"); | |
585 | print_spaces_filtered (2 * recurse, stream); | |
586 | } | |
587 | fputs_filtered ("<", stream); | |
588 | /* Not sure what the best notation is in the case where there is no | |
c5aa993b | 589 | baseclass name. */ |
c906108c SS |
590 | fputs_filtered (basename ? basename : "", stream); |
591 | fputs_filtered ("> = ", stream); | |
592 | ||
593 | ||
594 | if (skip >= 1) | |
595 | fprintf_filtered (stream, "<invalid address>"); | |
596 | else | |
597 | cp_print_value_fields (baseclass, real_type, base_valaddr, offset + boffset, address, | |
598 | stream, format, recurse, pretty, | |
c5aa993b | 599 | (struct type **) obstack_base (&dont_print_vb_obstack), |
c906108c SS |
600 | 0); |
601 | fputs_filtered (", ", stream); | |
602 | ||
603 | flush_it: | |
604 | ; | |
605 | } | |
606 | ||
607 | if (dont_print_vb == 0) | |
608 | { | |
609 | /* Free the space used to deal with the printing | |
c5aa993b | 610 | of this type from top level. */ |
c906108c SS |
611 | obstack_free (&dont_print_vb_obstack, last_dont_print); |
612 | /* Reset watermark so that we can continue protecting | |
c5aa993b | 613 | ourselves from whatever we were protecting ourselves. */ |
c906108c SS |
614 | dont_print_vb_obstack = tmp_obstack; |
615 | } | |
616 | } | |
617 | ||
618 | /* Print value of a static member. | |
619 | To avoid infinite recursion when printing a class that contains | |
620 | a static instance of the class, we keep the addresses of all printed | |
621 | static member classes in an obstack and refuse to print them more | |
622 | than once. | |
623 | ||
624 | VAL contains the value to print, TYPE, STREAM, RECURSE, and PRETTY | |
625 | have the same meanings as in c_val_print. */ | |
626 | ||
627 | static void | |
628 | cp_print_static_field (type, val, stream, format, recurse, pretty) | |
629 | struct type *type; | |
630 | value_ptr val; | |
631 | GDB_FILE *stream; | |
632 | int format; | |
633 | int recurse; | |
634 | enum val_prettyprint pretty; | |
635 | { | |
636 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
637 | { | |
638 | CORE_ADDR *first_dont_print; | |
639 | int i; | |
640 | ||
641 | first_dont_print | |
c5aa993b JM |
642 | = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); |
643 | i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) | |
c906108c SS |
644 | - first_dont_print; |
645 | ||
646 | while (--i >= 0) | |
647 | { | |
648 | if (VALUE_ADDRESS (val) == first_dont_print[i]) | |
649 | { | |
650 | fputs_filtered ("<same as static member of an already seen type>", | |
651 | stream); | |
652 | return; | |
653 | } | |
654 | } | |
655 | ||
656 | obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val), | |
657 | sizeof (CORE_ADDR)); | |
658 | ||
659 | CHECK_TYPEDEF (type); | |
660 | cp_print_value_fields (type, type, VALUE_CONTENTS_ALL (val), VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val), | |
661 | stream, format, recurse, pretty, NULL, 1); | |
662 | return; | |
663 | } | |
664 | val_print (type, VALUE_CONTENTS_ALL (val), VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val), | |
665 | stream, format, 0, recurse, pretty); | |
666 | } | |
667 | ||
668 | void | |
669 | cp_print_class_member (valaddr, domain, stream, prefix) | |
670 | char *valaddr; | |
671 | struct type *domain; | |
672 | GDB_FILE *stream; | |
673 | char *prefix; | |
674 | { | |
c5aa993b | 675 | |
c906108c SS |
676 | /* VAL is a byte offset into the structure type DOMAIN. |
677 | Find the name of the field for that offset and | |
678 | print it. */ | |
679 | int extra = 0; | |
680 | int bits = 0; | |
681 | register unsigned int i; | |
682 | unsigned len = TYPE_NFIELDS (domain); | |
683 | ||
684 | /* @@ Make VAL into bit offset */ | |
685 | ||
686 | /* Note: HP aCC generates offsets that are the real byte offsets added | |
687 | to a constant bias 0x20000000 (1 << 29). This constant bias gets | |
688 | shifted out in the code below -- joyous happenstance! */ | |
689 | ||
690 | /* Note: HP cfront uses a constant bias of 1; if we support this | |
c5aa993b JM |
691 | compiler ever, we will have to adjust the computation below */ |
692 | ||
c906108c SS |
693 | LONGEST val = unpack_long (builtin_type_int, valaddr) << 3; |
694 | for (i = TYPE_N_BASECLASSES (domain); i < len; i++) | |
695 | { | |
696 | int bitpos = TYPE_FIELD_BITPOS (domain, i); | |
697 | QUIT; | |
698 | if (val == bitpos) | |
699 | break; | |
700 | if (val < bitpos && i != 0) | |
701 | { | |
702 | /* Somehow pointing into a field. */ | |
703 | i -= 1; | |
704 | extra = (val - TYPE_FIELD_BITPOS (domain, i)); | |
705 | if (extra & 0x7) | |
706 | bits = 1; | |
707 | else | |
708 | extra >>= 3; | |
709 | break; | |
710 | } | |
711 | } | |
712 | if (i < len) | |
713 | { | |
714 | char *name; | |
715 | fprintf_filtered (stream, prefix); | |
716 | name = type_name_no_tag (domain); | |
717 | if (name) | |
c5aa993b | 718 | fputs_filtered (name, stream); |
c906108c SS |
719 | else |
720 | c_type_print_base (domain, stream, 0, 0); | |
721 | fprintf_filtered (stream, "::"); | |
722 | fputs_filtered (TYPE_FIELD_NAME (domain, i), stream); | |
723 | if (extra) | |
724 | fprintf_filtered (stream, " + %d bytes", extra); | |
725 | if (bits) | |
726 | fprintf_filtered (stream, " (offset in bits)"); | |
727 | } | |
728 | else | |
d4f3574e | 729 | fprintf_filtered (stream, "%ld", (long) (val >> 3)); |
c906108c SS |
730 | } |
731 | ||
732 | ||
733 | /* This function prints out virtual table entries for a class; it | |
734 | * recurses on the base classes to find all virtual functions | |
735 | * available in a class. | |
736 | * | |
737 | * pai/1997-05-21 Note: As the name suggests, it's currently | |
738 | * implemented for HP aCC runtime only. g++ objects are handled | |
739 | * differently and I have made no attempt to fold that logic in | |
740 | * here. The runtime layout is different for the two cases. Also, | |
741 | * this currently has only the code for non-RRBC layouts generated by | |
742 | * the HP aCC compiler; RRBC code is stubbed out and will have to be | |
743 | * added later. */ | |
c5aa993b | 744 | |
c906108c SS |
745 | |
746 | static void | |
747 | cp_print_hpacc_virtual_table_entries (type, vfuncs, v, stream, format, recurse, pretty) | |
c5aa993b JM |
748 | struct type *type; |
749 | int *vfuncs; | |
750 | value_ptr v; | |
751 | GDB_FILE *stream; | |
752 | int format; | |
753 | int recurse; | |
754 | enum val_prettyprint pretty; | |
c906108c SS |
755 | { |
756 | int fn, oi; | |
757 | ||
758 | /* pai: FIXME this function doesn't work. It should handle a given | |
759 | * virtual function only once (latest redefinition in class hierarchy) | |
760 | */ | |
761 | ||
c5aa993b JM |
762 | /* Recursion on other classes that can share the same vtable */ |
763 | struct type *pbc = primary_base_class (type); | |
c906108c SS |
764 | if (pbc) |
765 | cp_print_hpacc_virtual_table_entries (pbc, vfuncs, v, stream, format, recurse, pretty); | |
c5aa993b | 766 | |
c906108c SS |
767 | /* Now deal with vfuncs declared in this class */ |
768 | for (fn = 0; fn < TYPE_NFN_FIELDS (type); fn++) | |
769 | for (oi = 0; oi < TYPE_FN_FIELDLIST_LENGTH (type, fn); oi++) | |
770 | if (TYPE_FN_FIELD_VIRTUAL_P (TYPE_FN_FIELDLIST1 (type, fn), oi)) | |
c5aa993b JM |
771 | { |
772 | char *vf_name; | |
773 | ||
774 | /* virtual function offset */ | |
775 | int vx = TYPE_FN_FIELD_VOFFSET (TYPE_FN_FIELDLIST1 (type, fn), oi) - 1; | |
776 | ||
777 | /* Get the address of the vfunction entry */ | |
778 | value_ptr vf = value_copy (v); | |
779 | if (VALUE_LAZY (vf)) | |
780 | (void) value_fetch_lazy (vf); | |
781 | vf->aligner.contents[0] += 4 * (HP_ACC_VFUNC_START + vx); /* adjust by offset */ | |
782 | vf = value_ind (vf); /* get the entry */ | |
783 | VALUE_TYPE (vf) = VALUE_TYPE (v); /* make it a pointer */ | |
784 | ||
785 | /* print out the entry */ | |
786 | val_print (VALUE_TYPE (vf), VALUE_CONTENTS (vf), 0, 0, | |
787 | stream, format, 0, recurse + 1, pretty); | |
788 | vf_name = cplus_demangle (TYPE_FN_FIELD_PHYSNAME (TYPE_FN_FIELDLIST1 (type, fn), oi), | |
789 | DMGL_ARM); /* pai: (temp) FIXME Maybe this should be DMGL_ANSI */ | |
790 | fprintf_filtered (stream, " %s", vf_name); | |
791 | if (--(*vfuncs) > 0) | |
792 | fputs_filtered (", ", stream); | |
793 | } | |
c906108c SS |
794 | } |
795 | ||
796 | ||
797 | ||
798 | void | |
799 | _initialize_cp_valprint () | |
800 | { | |
801 | add_show_from_set | |
802 | (add_set_cmd ("static-members", class_support, var_boolean, | |
c5aa993b | 803 | (char *) &static_field_print, |
c906108c SS |
804 | "Set printing of C++ static members.", |
805 | &setprintlist), | |
806 | &showprintlist); | |
807 | /* Turn on printing of static fields. */ | |
808 | static_field_print = 1; | |
809 | ||
810 | add_show_from_set | |
c5aa993b | 811 | (add_set_cmd ("vtbl", class_support, var_boolean, (char *) &vtblprint, |
c906108c SS |
812 | "Set printing of C++ virtual function tables.", |
813 | &setprintlist), | |
814 | &showprintlist); | |
815 | ||
816 | add_show_from_set | |
c5aa993b JM |
817 | (add_set_cmd ("object", class_support, var_boolean, (char *) &objectprint, |
818 | "Set printing of object's derived type based on vtable info.", | |
c906108c SS |
819 | &setprintlist), |
820 | &showprintlist); | |
821 | ||
822 | /* Give people the defaults which they are used to. */ | |
823 | objectprint = 0; | |
824 | vtblprint = 0; | |
825 | obstack_begin (&dont_print_vb_obstack, 32 * sizeof (struct type *)); | |
826 | obstack_specify_allocation (&dont_print_statmem_obstack, | |
827 | 32 * sizeof (CORE_ADDR), sizeof (CORE_ADDR), | |
828 | xmalloc, free); | |
829 | } |