Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Support for printing C++ values for GDB, the GNU debugger. |
d9fcf2fb | 2 | Copyright 1986, 1988, 1989, 1991, 1994-1996, 2000 |
c906108c SS |
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 | ||
d9fcf2fb JM |
50 | static void cp_print_static_field (struct type *, value_ptr, |
51 | struct ui_file *, int, int, | |
52 | enum val_prettyprint); | |
c906108c | 53 | |
d9fcf2fb JM |
54 | static void cp_print_value (struct type *, struct type *, char *, int, |
55 | CORE_ADDR, struct ui_file *, int, int, | |
56 | enum val_prettyprint, struct type **); | |
c906108c | 57 | |
d9fcf2fb JM |
58 | static void cp_print_hpacc_virtual_table_entries (struct type *, int *, |
59 | value_ptr, | |
60 | struct ui_file *, int, | |
61 | int, | |
62 | enum val_prettyprint); | |
c906108c SS |
63 | |
64 | ||
65 | void | |
66 | cp_print_class_method (valaddr, type, stream) | |
67 | char *valaddr; | |
68 | struct type *type; | |
d9fcf2fb | 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 | } | |
89 | addr = unpack_pointer (lookup_pointer_type (builtin_type_void), valaddr); | |
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 | |
c906108c SS |
99 | for (j = 0; j < len2; j++) |
100 | { | |
101 | QUIT; | |
102 | if (TYPE_FN_FIELD_VOFFSET (f, j) == offset) | |
103 | { | |
104 | if (TYPE_FN_FIELD_STUB (f, j)) | |
105 | check_stub_method (domain, i, j); | |
106 | kind = "virtual "; | |
107 | goto common; | |
108 | } | |
109 | } | |
110 | } | |
111 | } | |
112 | else | |
113 | { | |
114 | sym = find_pc_function (addr); | |
115 | if (sym == 0) | |
116 | { | |
c5aa993b JM |
117 | /* 1997-08-01 Currently unsupported with HP aCC */ |
118 | if (hp_som_som_object_present) | |
119 | { | |
120 | fputs_filtered ("?? <not supported with HP aCC>", stream); | |
121 | return; | |
122 | } | |
c906108c SS |
123 | error ("invalid pointer to member function"); |
124 | } | |
125 | len = TYPE_NFN_FIELDS (domain); | |
126 | for (i = 0; i < len; i++) | |
127 | { | |
128 | f = TYPE_FN_FIELDLIST1 (domain, i); | |
129 | len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); | |
c5aa993b | 130 | |
c906108c SS |
131 | for (j = 0; j < len2; j++) |
132 | { | |
133 | QUIT; | |
134 | if (TYPE_FN_FIELD_STUB (f, j)) | |
135 | check_stub_method (domain, i, j); | |
136 | if (STREQ (SYMBOL_NAME (sym), TYPE_FN_FIELD_PHYSNAME (f, j))) | |
137 | { | |
138 | goto common; | |
139 | } | |
140 | } | |
141 | } | |
142 | } | |
c5aa993b | 143 | common: |
c906108c SS |
144 | if (i < len) |
145 | { | |
146 | char *demangled_name; | |
147 | ||
148 | fprintf_filtered (stream, "&"); | |
149 | fprintf_filtered (stream, kind); | |
150 | demangled_name = cplus_demangle (TYPE_FN_FIELD_PHYSNAME (f, j), | |
151 | DMGL_ANSI | DMGL_PARAMS); | |
152 | if (demangled_name == NULL) | |
153 | fprintf_filtered (stream, "<badly mangled name %s>", | |
154 | TYPE_FN_FIELD_PHYSNAME (f, j)); | |
155 | else | |
156 | { | |
157 | fputs_filtered (demangled_name, stream); | |
158 | free (demangled_name); | |
159 | } | |
160 | } | |
161 | else | |
162 | { | |
163 | fprintf_filtered (stream, "("); | |
164 | type_print (type, "", stream, -1); | |
165 | fprintf_filtered (stream, ") %d", (int) addr >> 3); | |
166 | } | |
167 | } | |
168 | ||
169 | /* This was what it was for gcc 2.4.5 and earlier. */ | |
170 | static const char vtbl_ptr_name_old[] = | |
c5aa993b | 171 | {CPLUS_MARKER, 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; |
c906108c SS |
172 | /* It was changed to this after 2.4.5. */ |
173 | const char vtbl_ptr_name[] = | |
c5aa993b | 174 | {'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; |
c906108c SS |
175 | |
176 | /* HP aCC uses different names */ | |
177 | const char hpacc_vtbl_ptr_name[] = | |
c5aa993b | 178 | {'_', '_', 'v', 'f', 'p', 0}; |
c906108c | 179 | const char hpacc_vtbl_ptr_type_name[] = |
c5aa993b | 180 | {'_', '_', 'v', 'f', 't', 'y', 'p', 0}; |
c906108c SS |
181 | |
182 | ||
183 | /* Return truth value for assertion that TYPE is of the type | |
184 | "pointer to virtual function". */ | |
185 | ||
186 | int | |
c5aa993b | 187 | cp_is_vtbl_ptr_type (type) |
c906108c SS |
188 | struct type *type; |
189 | { | |
190 | char *typename = type_name_no_tag (type); | |
191 | ||
192 | return (typename != NULL | |
193 | && (STREQ (typename, vtbl_ptr_name) | |
194 | || STREQ (typename, vtbl_ptr_name_old))); | |
195 | } | |
196 | ||
197 | /* Return truth value for the assertion that TYPE is of the type | |
198 | "pointer to virtual function table". */ | |
199 | ||
200 | int | |
c5aa993b | 201 | cp_is_vtbl_member (type) |
c906108c SS |
202 | struct type *type; |
203 | { | |
204 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
205 | { | |
206 | type = TYPE_TARGET_TYPE (type); | |
207 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
208 | { | |
209 | type = TYPE_TARGET_TYPE (type); | |
c5aa993b JM |
210 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */ |
211 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */ | |
c906108c SS |
212 | { |
213 | /* Virtual functions tables are full of pointers | |
c5aa993b | 214 | to virtual functions. */ |
c906108c SS |
215 | return cp_is_vtbl_ptr_type (type); |
216 | } | |
217 | } | |
218 | } | |
219 | return 0; | |
220 | } | |
221 | ||
222 | /* Mutually recursive subroutines of cp_print_value and c_val_print to | |
223 | print out a structure's fields: cp_print_value_fields and cp_print_value. | |
c5aa993b | 224 | |
c906108c SS |
225 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the |
226 | same meanings as in cp_print_value and c_val_print. | |
227 | ||
228 | 2nd argument REAL_TYPE is used to carry over the type of the derived | |
229 | class across the recursion to base classes. | |
230 | ||
231 | DONT_PRINT is an array of baseclass types that we | |
232 | should not print, or zero if called from top level. */ | |
233 | ||
234 | void | |
235 | cp_print_value_fields (type, real_type, valaddr, offset, address, stream, format, recurse, pretty, | |
236 | dont_print_vb, dont_print_statmem) | |
237 | struct type *type; | |
238 | struct type *real_type; | |
239 | char *valaddr; | |
240 | int offset; | |
241 | CORE_ADDR address; | |
d9fcf2fb | 242 | struct ui_file *stream; |
c906108c SS |
243 | int format; |
244 | int recurse; | |
245 | enum val_prettyprint pretty; | |
246 | struct type **dont_print_vb; | |
247 | int dont_print_statmem; | |
248 | { | |
249 | int i, len, n_baseclasses; | |
250 | struct obstack tmp_obstack; | |
251 | char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack); | |
252 | int fields_seen = 0; | |
253 | ||
254 | CHECK_TYPEDEF (type); | |
255 | ||
256 | fprintf_filtered (stream, "{"); | |
257 | len = TYPE_NFIELDS (type); | |
258 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
259 | ||
260 | /* First, print out baseclasses such that we don't print | |
261 | duplicates of virtual baseclasses. */ | |
262 | ||
263 | if (n_baseclasses > 0) | |
264 | cp_print_value (type, real_type, valaddr, offset, address, stream, | |
c5aa993b | 265 | format, recurse + 1, pretty, dont_print_vb); |
c906108c SS |
266 | |
267 | /* Second, print out data fields */ | |
268 | ||
269 | /* If there are no data fields, or if the only field is the | |
c5aa993b | 270 | * vtbl pointer, skip this part */ |
c906108c SS |
271 | if ((len == n_baseclasses) || |
272 | ((len - n_baseclasses == 1) && | |
c5aa993b JM |
273 | TYPE_HAS_VTABLE (type) && |
274 | STREQN (TYPE_FIELD_NAME (type, n_baseclasses), hpacc_vtbl_ptr_name, 5)) || | |
c906108c SS |
275 | !len) |
276 | fprintf_filtered (stream, "<No data fields>"); | |
277 | else | |
278 | { | |
279 | extern int inspect_it; | |
280 | ||
281 | if (dont_print_statmem == 0) | |
282 | { | |
283 | /* If we're at top level, carve out a completely fresh | |
284 | chunk of the obstack and use that until this particular | |
285 | invocation returns. */ | |
286 | tmp_obstack = dont_print_statmem_obstack; | |
287 | obstack_finish (&dont_print_statmem_obstack); | |
288 | } | |
289 | ||
290 | for (i = n_baseclasses; i < len; i++) | |
291 | { | |
292 | /* If requested, skip printing of static fields. */ | |
293 | if (!static_field_print && TYPE_FIELD_STATIC (type, i)) | |
294 | continue; | |
295 | ||
c5aa993b JM |
296 | /* If a vtable pointer appears, we'll print it out later */ |
297 | if (TYPE_HAS_VTABLE (type) && STREQN (TYPE_FIELD_NAME (type, i), hpacc_vtbl_ptr_name, 5)) | |
298 | continue; | |
299 | ||
c906108c SS |
300 | if (fields_seen) |
301 | fprintf_filtered (stream, ", "); | |
302 | else if (n_baseclasses > 0) | |
303 | { | |
304 | if (pretty) | |
305 | { | |
306 | fprintf_filtered (stream, "\n"); | |
307 | print_spaces_filtered (2 + 2 * recurse, stream); | |
308 | fputs_filtered ("members of ", stream); | |
309 | fputs_filtered (type_name_no_tag (type), stream); | |
310 | fputs_filtered (": ", stream); | |
311 | } | |
312 | } | |
313 | fields_seen = 1; | |
314 | ||
315 | if (pretty) | |
316 | { | |
317 | fprintf_filtered (stream, "\n"); | |
318 | print_spaces_filtered (2 + 2 * recurse, stream); | |
319 | } | |
c5aa993b | 320 | else |
c906108c SS |
321 | { |
322 | wrap_here (n_spaces (2 + 2 * recurse)); | |
323 | } | |
324 | if (inspect_it) | |
325 | { | |
326 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR) | |
327 | fputs_filtered ("\"( ptr \"", stream); | |
328 | else | |
329 | fputs_filtered ("\"( nodef \"", stream); | |
330 | if (TYPE_FIELD_STATIC (type, i)) | |
331 | fputs_filtered ("static ", stream); | |
332 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
333 | language_cplus, | |
334 | DMGL_PARAMS | DMGL_ANSI); | |
335 | fputs_filtered ("\" \"", stream); | |
336 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
337 | language_cplus, | |
338 | DMGL_PARAMS | DMGL_ANSI); | |
339 | fputs_filtered ("\") \"", stream); | |
340 | } | |
341 | else | |
342 | { | |
343 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
344 | ||
345 | if (TYPE_FIELD_STATIC (type, i)) | |
346 | fputs_filtered ("static ", stream); | |
347 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
348 | language_cplus, | |
349 | DMGL_PARAMS | DMGL_ANSI); | |
350 | annotate_field_name_end (); | |
351 | /* do not print leading '=' in case of anonymous unions */ | |
352 | if (strcmp (TYPE_FIELD_NAME (type, i), "")) | |
353 | fputs_filtered (" = ", stream); | |
354 | annotate_field_value (); | |
355 | } | |
356 | ||
357 | if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i)) | |
358 | { | |
359 | value_ptr v; | |
360 | ||
361 | /* Bitfields require special handling, especially due to byte | |
c5aa993b | 362 | order problems. */ |
c906108c SS |
363 | if (TYPE_FIELD_IGNORE (type, i)) |
364 | { | |
c5aa993b | 365 | fputs_filtered ("<optimized out or zero length>", stream); |
c906108c SS |
366 | } |
367 | else | |
368 | { | |
c5aa993b JM |
369 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), |
370 | unpack_field_as_long (type, valaddr + offset, i)); | |
c906108c | 371 | |
c5aa993b JM |
372 | val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), 0, 0, |
373 | stream, format, 0, recurse + 1, pretty); | |
c906108c SS |
374 | } |
375 | } | |
376 | else | |
377 | { | |
378 | if (TYPE_FIELD_IGNORE (type, i)) | |
379 | { | |
c5aa993b | 380 | fputs_filtered ("<optimized out or zero length>", stream); |
c906108c SS |
381 | } |
382 | else if (TYPE_FIELD_STATIC (type, i)) | |
383 | { | |
384 | value_ptr v = value_static_field (type, i); | |
385 | if (v == NULL) | |
386 | fputs_filtered ("<optimized out>", stream); | |
387 | else | |
388 | cp_print_static_field (TYPE_FIELD_TYPE (type, i), v, | |
389 | stream, format, recurse + 1, | |
390 | pretty); | |
391 | } | |
392 | else | |
393 | { | |
c5aa993b JM |
394 | val_print (TYPE_FIELD_TYPE (type, i), |
395 | valaddr, offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
396 | address + TYPE_FIELD_BITPOS (type, i) / 8, | |
397 | stream, format, 0, recurse + 1, pretty); | |
c906108c SS |
398 | } |
399 | } | |
400 | annotate_field_end (); | |
401 | } | |
402 | ||
403 | if (dont_print_statmem == 0) | |
404 | { | |
405 | /* Free the space used to deal with the printing | |
406 | of the members from top level. */ | |
407 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
408 | dont_print_statmem_obstack = tmp_obstack; | |
409 | } | |
410 | ||
411 | if (pretty) | |
412 | { | |
413 | fprintf_filtered (stream, "\n"); | |
414 | print_spaces_filtered (2 * recurse, stream); | |
415 | } | |
c5aa993b JM |
416 | } /* if there are data fields */ |
417 | /* Now print out the virtual table pointer if there is one */ | |
418 | if (TYPE_HAS_VTABLE (type) && STREQN (TYPE_FIELD_NAME (type, n_baseclasses), hpacc_vtbl_ptr_name, 5)) | |
c906108c SS |
419 | { |
420 | value_ptr v; | |
c5aa993b | 421 | /* First get the virtual table pointer and print it out */ |
c906108c SS |
422 | |
423 | #if 0 | |
424 | fputs_filtered ("__vfp = ", stream); | |
425 | #endif | |
426 | ||
427 | fputs_filtered (", Virtual table at ", stream); | |
428 | ||
429 | /* pai: FIXME 32x64 problem? */ | |
430 | /* Not sure what the best notation is in the case where there is no | |
431 | baseclass name. */ | |
432 | v = value_from_longest (lookup_pointer_type (builtin_type_unsigned_long), | |
c5aa993b | 433 | *(unsigned long *) (valaddr + offset)); |
c906108c SS |
434 | |
435 | val_print (VALUE_TYPE (v), VALUE_CONTENTS (v), 0, 0, | |
c5aa993b | 436 | stream, format, 0, recurse + 1, pretty); |
c906108c SS |
437 | fields_seen = 1; |
438 | ||
439 | if (vtblprint) | |
c5aa993b JM |
440 | { |
441 | /* Print out function pointers in vtable. */ | |
c906108c | 442 | |
c5aa993b JM |
443 | /* FIXME: then-clause is for non-RRBC layout of virtual |
444 | * table. The RRBC case in the else-clause is yet to be | |
445 | * implemented. The if (1) below should be changed to a | |
446 | * test for whether the executable we have was compiled | |
447 | * with a version of HP aCC that doesn't have RRBC | |
448 | * support. */ | |
c906108c | 449 | |
c5aa993b JM |
450 | if (1) |
451 | { | |
452 | /* no RRBC support; function pointers embedded directly in vtable */ | |
c906108c | 453 | |
c5aa993b | 454 | int vfuncs = count_virtual_fns (real_type); |
c906108c | 455 | |
c5aa993b | 456 | fputs_filtered (" {", stream); |
c906108c | 457 | |
c5aa993b | 458 | /* FIXME : doesn't work at present */ |
c906108c | 459 | #if 0 |
c5aa993b | 460 | fprintf_filtered (stream, "%d entr%s: ", vfuncs, vfuncs == 1 ? "y" : "ies"); |
c906108c | 461 | #else |
c5aa993b | 462 | fputs_filtered ("not implemented", stream); |
c906108c SS |
463 | |
464 | ||
465 | #endif | |
466 | ||
c5aa993b | 467 | /* recursive function that prints all virtual function entries */ |
c906108c | 468 | #if 0 |
c5aa993b | 469 | cp_print_hpacc_virtual_table_entries (real_type, &vfuncs, v, stream, format, recurse, pretty); |
c906108c | 470 | #endif |
c5aa993b JM |
471 | fputs_filtered ("}", stream); |
472 | } /* non-RRBC case */ | |
473 | else | |
474 | { | |
475 | /* FIXME -- seem comments above */ | |
476 | /* RRBC support present; function pointers are found | |
477 | * by indirection through the class segment entries. */ | |
478 | ||
479 | ||
480 | } /* RRBC case */ | |
481 | } /* if vtblprint */ | |
c906108c SS |
482 | |
483 | if (pretty) | |
484 | { | |
485 | fprintf_filtered (stream, "\n"); | |
486 | print_spaces_filtered (2 * recurse, stream); | |
487 | } | |
488 | ||
c5aa993b JM |
489 | } /* if vtable exists */ |
490 | ||
c906108c SS |
491 | fprintf_filtered (stream, "}"); |
492 | } | |
493 | ||
494 | /* Special val_print routine to avoid printing multiple copies of virtual | |
495 | baseclasses. */ | |
496 | ||
497 | static void | |
498 | cp_print_value (type, real_type, valaddr, offset, address, stream, format, recurse, pretty, | |
499 | dont_print_vb) | |
500 | struct type *type; | |
501 | struct type *real_type; | |
502 | char *valaddr; | |
503 | int offset; | |
504 | CORE_ADDR address; | |
d9fcf2fb | 505 | struct ui_file *stream; |
c906108c SS |
506 | int format; |
507 | int recurse; | |
508 | enum val_prettyprint pretty; | |
509 | struct type **dont_print_vb; | |
510 | { | |
511 | struct obstack tmp_obstack; | |
512 | struct type **last_dont_print | |
c5aa993b | 513 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); |
c906108c SS |
514 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); |
515 | ||
516 | if (dont_print_vb == 0) | |
517 | { | |
518 | /* If we're at top level, carve out a completely fresh | |
c5aa993b JM |
519 | chunk of the obstack and use that until this particular |
520 | invocation returns. */ | |
c906108c SS |
521 | tmp_obstack = dont_print_vb_obstack; |
522 | /* Bump up the high-water mark. Now alpha is omega. */ | |
523 | obstack_finish (&dont_print_vb_obstack); | |
524 | } | |
525 | ||
526 | for (i = 0; i < n_baseclasses; i++) | |
527 | { | |
528 | int boffset; | |
529 | int skip; | |
530 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); | |
531 | char *basename = TYPE_NAME (baseclass); | |
532 | char *base_valaddr; | |
533 | ||
534 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
535 | { | |
536 | struct type **first_dont_print | |
c5aa993b | 537 | = (struct type **) obstack_base (&dont_print_vb_obstack); |
c906108c | 538 | |
c5aa993b JM |
539 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) |
540 | - first_dont_print; | |
c906108c SS |
541 | |
542 | while (--j >= 0) | |
543 | if (baseclass == first_dont_print[j]) | |
544 | goto flush_it; | |
545 | ||
546 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
547 | } | |
548 | ||
549 | if (TYPE_HAS_VTABLE (type) && BASETYPE_VIA_VIRTUAL (type, i)) | |
c5aa993b JM |
550 | { |
551 | /* Assume HP/Taligent runtime convention */ | |
552 | find_rt_vbase_offset (type, TYPE_BASECLASS (type, i), | |
553 | valaddr, offset, &boffset, &skip); | |
554 | if (skip >= 0) | |
555 | error ("Virtual base class offset not found from vtable while printing"); | |
556 | base_valaddr = valaddr; | |
557 | } | |
c906108c | 558 | else |
c5aa993b JM |
559 | { |
560 | boffset = baseclass_offset (type, i, valaddr + offset, address + offset); | |
561 | skip = ((boffset == -1) || (boffset + offset) < 0) ? 1 : -1; | |
c906108c | 562 | |
c5aa993b JM |
563 | if (BASETYPE_VIA_VIRTUAL (type, i)) |
564 | { | |
565 | /* The virtual base class pointer might have been clobbered by the | |
c906108c SS |
566 | user program. Make sure that it still points to a valid memory |
567 | location. */ | |
568 | ||
c5aa993b JM |
569 | if (boffset != -1 && ((boffset + offset) < 0 || (boffset + offset) >= TYPE_LENGTH (type))) |
570 | { | |
571 | base_valaddr = (char *) alloca (TYPE_LENGTH (baseclass)); | |
572 | if (target_read_memory (address + boffset, base_valaddr, | |
573 | TYPE_LENGTH (baseclass)) != 0) | |
574 | skip = 1; | |
575 | } | |
576 | else | |
577 | base_valaddr = valaddr; | |
578 | } | |
579 | else | |
580 | base_valaddr = valaddr; | |
c906108c SS |
581 | } |
582 | ||
583 | /* now do the printing */ | |
584 | if (pretty) | |
585 | { | |
586 | fprintf_filtered (stream, "\n"); | |
587 | print_spaces_filtered (2 * recurse, stream); | |
588 | } | |
589 | fputs_filtered ("<", stream); | |
590 | /* Not sure what the best notation is in the case where there is no | |
c5aa993b | 591 | baseclass name. */ |
c906108c SS |
592 | fputs_filtered (basename ? basename : "", stream); |
593 | fputs_filtered ("> = ", stream); | |
594 | ||
595 | ||
596 | if (skip >= 1) | |
597 | fprintf_filtered (stream, "<invalid address>"); | |
598 | else | |
599 | cp_print_value_fields (baseclass, real_type, base_valaddr, offset + boffset, address, | |
600 | stream, format, recurse, pretty, | |
c5aa993b | 601 | (struct type **) obstack_base (&dont_print_vb_obstack), |
c906108c SS |
602 | 0); |
603 | fputs_filtered (", ", stream); | |
604 | ||
605 | flush_it: | |
606 | ; | |
607 | } | |
608 | ||
609 | if (dont_print_vb == 0) | |
610 | { | |
611 | /* Free the space used to deal with the printing | |
c5aa993b | 612 | of this type from top level. */ |
c906108c SS |
613 | obstack_free (&dont_print_vb_obstack, last_dont_print); |
614 | /* Reset watermark so that we can continue protecting | |
c5aa993b | 615 | ourselves from whatever we were protecting ourselves. */ |
c906108c SS |
616 | dont_print_vb_obstack = tmp_obstack; |
617 | } | |
618 | } | |
619 | ||
620 | /* Print value of a static member. | |
621 | To avoid infinite recursion when printing a class that contains | |
622 | a static instance of the class, we keep the addresses of all printed | |
623 | static member classes in an obstack and refuse to print them more | |
624 | than once. | |
625 | ||
626 | VAL contains the value to print, TYPE, STREAM, RECURSE, and PRETTY | |
627 | have the same meanings as in c_val_print. */ | |
628 | ||
629 | static void | |
630 | cp_print_static_field (type, val, stream, format, recurse, pretty) | |
631 | struct type *type; | |
632 | value_ptr val; | |
d9fcf2fb | 633 | struct ui_file *stream; |
c906108c SS |
634 | int format; |
635 | int recurse; | |
636 | enum val_prettyprint pretty; | |
637 | { | |
638 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
639 | { | |
640 | CORE_ADDR *first_dont_print; | |
641 | int i; | |
642 | ||
643 | first_dont_print | |
c5aa993b JM |
644 | = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); |
645 | i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) | |
c906108c SS |
646 | - first_dont_print; |
647 | ||
648 | while (--i >= 0) | |
649 | { | |
650 | if (VALUE_ADDRESS (val) == first_dont_print[i]) | |
651 | { | |
652 | fputs_filtered ("<same as static member of an already seen type>", | |
653 | stream); | |
654 | return; | |
655 | } | |
656 | } | |
657 | ||
658 | obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val), | |
659 | sizeof (CORE_ADDR)); | |
660 | ||
661 | CHECK_TYPEDEF (type); | |
662 | cp_print_value_fields (type, type, VALUE_CONTENTS_ALL (val), VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val), | |
663 | stream, format, recurse, pretty, NULL, 1); | |
664 | return; | |
665 | } | |
666 | val_print (type, VALUE_CONTENTS_ALL (val), VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val), | |
667 | stream, format, 0, recurse, pretty); | |
668 | } | |
669 | ||
670 | void | |
671 | cp_print_class_member (valaddr, domain, stream, prefix) | |
672 | char *valaddr; | |
673 | struct type *domain; | |
d9fcf2fb | 674 | struct ui_file *stream; |
c906108c SS |
675 | char *prefix; |
676 | { | |
c5aa993b | 677 | |
c906108c SS |
678 | /* VAL is a byte offset into the structure type DOMAIN. |
679 | Find the name of the field for that offset and | |
680 | print it. */ | |
681 | int extra = 0; | |
682 | int bits = 0; | |
683 | register unsigned int i; | |
684 | unsigned len = TYPE_NFIELDS (domain); | |
685 | ||
686 | /* @@ Make VAL into bit offset */ | |
687 | ||
688 | /* Note: HP aCC generates offsets that are the real byte offsets added | |
689 | to a constant bias 0x20000000 (1 << 29). This constant bias gets | |
690 | shifted out in the code below -- joyous happenstance! */ | |
691 | ||
692 | /* Note: HP cfront uses a constant bias of 1; if we support this | |
c5aa993b JM |
693 | compiler ever, we will have to adjust the computation below */ |
694 | ||
c906108c SS |
695 | LONGEST val = unpack_long (builtin_type_int, valaddr) << 3; |
696 | for (i = TYPE_N_BASECLASSES (domain); i < len; i++) | |
697 | { | |
698 | int bitpos = TYPE_FIELD_BITPOS (domain, i); | |
699 | QUIT; | |
700 | if (val == bitpos) | |
701 | break; | |
702 | if (val < bitpos && i != 0) | |
703 | { | |
704 | /* Somehow pointing into a field. */ | |
705 | i -= 1; | |
706 | extra = (val - TYPE_FIELD_BITPOS (domain, i)); | |
707 | if (extra & 0x7) | |
708 | bits = 1; | |
709 | else | |
710 | extra >>= 3; | |
711 | break; | |
712 | } | |
713 | } | |
714 | if (i < len) | |
715 | { | |
716 | char *name; | |
717 | fprintf_filtered (stream, prefix); | |
718 | name = type_name_no_tag (domain); | |
719 | if (name) | |
c5aa993b | 720 | fputs_filtered (name, stream); |
c906108c SS |
721 | else |
722 | c_type_print_base (domain, stream, 0, 0); | |
723 | fprintf_filtered (stream, "::"); | |
724 | fputs_filtered (TYPE_FIELD_NAME (domain, i), stream); | |
725 | if (extra) | |
726 | fprintf_filtered (stream, " + %d bytes", extra); | |
727 | if (bits) | |
728 | fprintf_filtered (stream, " (offset in bits)"); | |
729 | } | |
730 | else | |
d4f3574e | 731 | fprintf_filtered (stream, "%ld", (long) (val >> 3)); |
c906108c SS |
732 | } |
733 | ||
734 | ||
735 | /* This function prints out virtual table entries for a class; it | |
736 | * recurses on the base classes to find all virtual functions | |
737 | * available in a class. | |
738 | * | |
739 | * pai/1997-05-21 Note: As the name suggests, it's currently | |
740 | * implemented for HP aCC runtime only. g++ objects are handled | |
741 | * differently and I have made no attempt to fold that logic in | |
742 | * here. The runtime layout is different for the two cases. Also, | |
743 | * this currently has only the code for non-RRBC layouts generated by | |
744 | * the HP aCC compiler; RRBC code is stubbed out and will have to be | |
745 | * added later. */ | |
c5aa993b | 746 | |
c906108c SS |
747 | |
748 | static void | |
749 | cp_print_hpacc_virtual_table_entries (type, vfuncs, v, stream, format, recurse, pretty) | |
c5aa993b JM |
750 | struct type *type; |
751 | int *vfuncs; | |
752 | value_ptr v; | |
d9fcf2fb | 753 | struct ui_file *stream; |
c5aa993b JM |
754 | int format; |
755 | int recurse; | |
756 | enum val_prettyprint pretty; | |
c906108c SS |
757 | { |
758 | int fn, oi; | |
759 | ||
760 | /* pai: FIXME this function doesn't work. It should handle a given | |
761 | * virtual function only once (latest redefinition in class hierarchy) | |
762 | */ | |
763 | ||
c5aa993b JM |
764 | /* Recursion on other classes that can share the same vtable */ |
765 | struct type *pbc = primary_base_class (type); | |
c906108c SS |
766 | if (pbc) |
767 | cp_print_hpacc_virtual_table_entries (pbc, vfuncs, v, stream, format, recurse, pretty); | |
c5aa993b | 768 | |
c906108c SS |
769 | /* Now deal with vfuncs declared in this class */ |
770 | for (fn = 0; fn < TYPE_NFN_FIELDS (type); fn++) | |
771 | for (oi = 0; oi < TYPE_FN_FIELDLIST_LENGTH (type, fn); oi++) | |
772 | if (TYPE_FN_FIELD_VIRTUAL_P (TYPE_FN_FIELDLIST1 (type, fn), oi)) | |
c5aa993b JM |
773 | { |
774 | char *vf_name; | |
775 | ||
776 | /* virtual function offset */ | |
777 | int vx = TYPE_FN_FIELD_VOFFSET (TYPE_FN_FIELDLIST1 (type, fn), oi) - 1; | |
778 | ||
779 | /* Get the address of the vfunction entry */ | |
780 | value_ptr vf = value_copy (v); | |
781 | if (VALUE_LAZY (vf)) | |
782 | (void) value_fetch_lazy (vf); | |
783 | vf->aligner.contents[0] += 4 * (HP_ACC_VFUNC_START + vx); /* adjust by offset */ | |
784 | vf = value_ind (vf); /* get the entry */ | |
785 | VALUE_TYPE (vf) = VALUE_TYPE (v); /* make it a pointer */ | |
786 | ||
787 | /* print out the entry */ | |
788 | val_print (VALUE_TYPE (vf), VALUE_CONTENTS (vf), 0, 0, | |
789 | stream, format, 0, recurse + 1, pretty); | |
790 | vf_name = cplus_demangle (TYPE_FN_FIELD_PHYSNAME (TYPE_FN_FIELDLIST1 (type, fn), oi), | |
791 | DMGL_ARM); /* pai: (temp) FIXME Maybe this should be DMGL_ANSI */ | |
792 | fprintf_filtered (stream, " %s", vf_name); | |
793 | if (--(*vfuncs) > 0) | |
794 | fputs_filtered (", ", stream); | |
795 | } | |
c906108c SS |
796 | } |
797 | ||
798 | ||
799 | ||
800 | void | |
801 | _initialize_cp_valprint () | |
802 | { | |
803 | add_show_from_set | |
804 | (add_set_cmd ("static-members", class_support, var_boolean, | |
c5aa993b | 805 | (char *) &static_field_print, |
c906108c SS |
806 | "Set printing of C++ static members.", |
807 | &setprintlist), | |
808 | &showprintlist); | |
809 | /* Turn on printing of static fields. */ | |
810 | static_field_print = 1; | |
811 | ||
812 | add_show_from_set | |
c5aa993b | 813 | (add_set_cmd ("vtbl", class_support, var_boolean, (char *) &vtblprint, |
c906108c SS |
814 | "Set printing of C++ virtual function tables.", |
815 | &setprintlist), | |
816 | &showprintlist); | |
817 | ||
818 | add_show_from_set | |
c5aa993b JM |
819 | (add_set_cmd ("object", class_support, var_boolean, (char *) &objectprint, |
820 | "Set printing of object's derived type based on vtable info.", | |
c906108c SS |
821 | &setprintlist), |
822 | &showprintlist); | |
823 | ||
824 | /* Give people the defaults which they are used to. */ | |
825 | objectprint = 0; | |
826 | vtblprint = 0; | |
827 | obstack_begin (&dont_print_vb_obstack, 32 * sizeof (struct type *)); | |
828 | obstack_specify_allocation (&dont_print_statmem_obstack, | |
829 | 32 * sizeof (CORE_ADDR), sizeof (CORE_ADDR), | |
830 | xmalloc, free); | |
831 | } |