Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Support for printing C++ values for GDB, the GNU debugger. |
b6ba6518 | 2 | Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
6943961c | 3 | 2000, 2001 |
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" | |
b9d652ac | 36 | #include "cp-abi.h" |
c906108c | 37 | |
c5aa993b JM |
38 | /* Indication of presence of HP-compiled object files */ |
39 | extern int hp_som_som_object_present; /* defined in symtab.c */ | |
c906108c SS |
40 | |
41 | ||
42 | int vtblprint; /* Controls printing of vtbl's */ | |
43 | int objectprint; /* Controls looking up an object's derived type | |
44 | using what we find in its vtables. */ | |
c5aa993b | 45 | int static_field_print; /* Controls printing of static fields. */ |
c906108c SS |
46 | |
47 | static struct obstack dont_print_vb_obstack; | |
48 | static struct obstack dont_print_statmem_obstack; | |
49 | ||
a14ed312 | 50 | extern void _initialize_cp_valprint (void); |
392a587b | 51 | |
6943961c | 52 | static void cp_print_static_field (struct type *, struct value *, |
d9fcf2fb JM |
53 | struct ui_file *, int, int, |
54 | enum val_prettyprint); | |
c906108c | 55 | |
d9fcf2fb JM |
56 | static void cp_print_value (struct type *, struct type *, char *, int, |
57 | CORE_ADDR, struct ui_file *, int, int, | |
58 | enum val_prettyprint, struct type **); | |
c906108c | 59 | |
d9fcf2fb | 60 | static void cp_print_hpacc_virtual_table_entries (struct type *, int *, |
6943961c | 61 | struct value *, |
d9fcf2fb JM |
62 | struct ui_file *, int, |
63 | int, | |
64 | enum val_prettyprint); | |
c906108c SS |
65 | |
66 | ||
67 | void | |
2c63a960 JB |
68 | cp_print_class_method (char *valaddr, |
69 | struct type *type, | |
70 | struct ui_file *stream) | |
c906108c SS |
71 | { |
72 | struct type *domain; | |
73 | struct fn_field *f = NULL; | |
74 | int j = 0; | |
75 | int len2; | |
76 | int offset; | |
77 | char *kind = ""; | |
78 | CORE_ADDR addr; | |
79 | struct symbol *sym; | |
80 | unsigned len; | |
81 | unsigned int i; | |
82 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); | |
83 | ||
84 | domain = TYPE_DOMAIN_TYPE (target_type); | |
c5aa993b | 85 | if (domain == (struct type *) NULL) |
c906108c SS |
86 | { |
87 | fprintf_filtered (stream, "<unknown>"); | |
88 | return; | |
89 | } | |
90 | addr = unpack_pointer (lookup_pointer_type (builtin_type_void), valaddr); | |
91 | if (METHOD_PTR_IS_VIRTUAL (addr)) | |
92 | { | |
93 | offset = METHOD_PTR_TO_VOFFSET (addr); | |
94 | len = TYPE_NFN_FIELDS (domain); | |
95 | for (i = 0; i < len; i++) | |
96 | { | |
97 | f = TYPE_FN_FIELDLIST1 (domain, i); | |
98 | len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); | |
c5aa993b | 99 | |
c906108c SS |
100 | for (j = 0; j < len2; j++) |
101 | { | |
102 | QUIT; | |
103 | if (TYPE_FN_FIELD_VOFFSET (f, j) == offset) | |
104 | { | |
105 | if (TYPE_FN_FIELD_STUB (f, j)) | |
106 | check_stub_method (domain, i, j); | |
107 | kind = "virtual "; | |
108 | goto common; | |
109 | } | |
110 | } | |
111 | } | |
112 | } | |
113 | else | |
114 | { | |
115 | sym = find_pc_function (addr); | |
116 | if (sym == 0) | |
117 | { | |
c5aa993b JM |
118 | /* 1997-08-01 Currently unsupported with HP aCC */ |
119 | if (hp_som_som_object_present) | |
120 | { | |
121 | fputs_filtered ("?? <not supported with HP aCC>", stream); | |
122 | return; | |
123 | } | |
c906108c SS |
124 | error ("invalid pointer to member function"); |
125 | } | |
126 | len = TYPE_NFN_FIELDS (domain); | |
127 | for (i = 0; i < len; i++) | |
128 | { | |
129 | f = TYPE_FN_FIELDLIST1 (domain, i); | |
130 | len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); | |
c5aa993b | 131 | |
c906108c SS |
132 | for (j = 0; j < len2; j++) |
133 | { | |
134 | QUIT; | |
135 | if (TYPE_FN_FIELD_STUB (f, j)) | |
136 | check_stub_method (domain, i, j); | |
137 | if (STREQ (SYMBOL_NAME (sym), TYPE_FN_FIELD_PHYSNAME (f, j))) | |
138 | { | |
139 | goto common; | |
140 | } | |
141 | } | |
142 | } | |
143 | } | |
2c63a960 | 144 | common: |
c906108c SS |
145 | if (i < len) |
146 | { | |
147 | char *demangled_name; | |
148 | ||
149 | fprintf_filtered (stream, "&"); | |
150 | fprintf_filtered (stream, kind); | |
151 | demangled_name = cplus_demangle (TYPE_FN_FIELD_PHYSNAME (f, j), | |
152 | DMGL_ANSI | DMGL_PARAMS); | |
153 | if (demangled_name == NULL) | |
154 | fprintf_filtered (stream, "<badly mangled name %s>", | |
155 | TYPE_FN_FIELD_PHYSNAME (f, j)); | |
156 | else | |
157 | { | |
158 | fputs_filtered (demangled_name, stream); | |
b8c9b27d | 159 | xfree (demangled_name); |
c906108c SS |
160 | } |
161 | } | |
162 | else | |
163 | { | |
164 | fprintf_filtered (stream, "("); | |
165 | type_print (type, "", stream, -1); | |
166 | fprintf_filtered (stream, ") %d", (int) addr >> 3); | |
167 | } | |
168 | } | |
169 | ||
170 | /* This was what it was for gcc 2.4.5 and earlier. */ | |
171 | static const char vtbl_ptr_name_old[] = | |
2c63a960 JB |
172 | { |
173 | CPLUS_MARKER, 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', | |
174 | 't', 'y', 'p', 'e', 0 | |
175 | }; | |
176 | ||
c906108c | 177 | /* It was changed to this after 2.4.5. */ |
2c63a960 | 178 | const char vtbl_ptr_name[] = "__vtbl_ptr_type"; |
c906108c SS |
179 | |
180 | /* HP aCC uses different names */ | |
2c63a960 JB |
181 | const char hpacc_vtbl_ptr_name[] = "__vfp"; |
182 | const char hpacc_vtbl_ptr_type_name[] = "__vftyp"; | |
c906108c SS |
183 | |
184 | ||
185 | /* Return truth value for assertion that TYPE is of the type | |
186 | "pointer to virtual function". */ | |
187 | ||
188 | int | |
fba45db2 | 189 | cp_is_vtbl_ptr_type (struct type *type) |
c906108c SS |
190 | { |
191 | char *typename = type_name_no_tag (type); | |
192 | ||
193 | return (typename != NULL | |
194 | && (STREQ (typename, vtbl_ptr_name) | |
195 | || STREQ (typename, vtbl_ptr_name_old))); | |
196 | } | |
197 | ||
198 | /* Return truth value for the assertion that TYPE is of the type | |
199 | "pointer to virtual function table". */ | |
200 | ||
201 | int | |
fba45db2 | 202 | cp_is_vtbl_member (struct type *type) |
c906108c SS |
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 | |
fba45db2 KB |
235 | cp_print_value_fields (struct type *type, struct type *real_type, char *valaddr, |
236 | int offset, CORE_ADDR address, struct ui_file *stream, | |
237 | int format, int recurse, enum val_prettyprint pretty, | |
238 | struct type **dont_print_vb, int dont_print_statmem) | |
c906108c SS |
239 | { |
240 | int i, len, n_baseclasses; | |
241 | struct obstack tmp_obstack; | |
242 | char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack); | |
243 | int fields_seen = 0; | |
244 | ||
245 | CHECK_TYPEDEF (type); | |
246 | ||
247 | fprintf_filtered (stream, "{"); | |
248 | len = TYPE_NFIELDS (type); | |
249 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
250 | ||
251 | /* First, print out baseclasses such that we don't print | |
252 | duplicates of virtual baseclasses. */ | |
253 | ||
254 | if (n_baseclasses > 0) | |
255 | cp_print_value (type, real_type, valaddr, offset, address, stream, | |
c5aa993b | 256 | format, recurse + 1, pretty, dont_print_vb); |
c906108c SS |
257 | |
258 | /* Second, print out data fields */ | |
259 | ||
260 | /* If there are no data fields, or if the only field is the | |
c5aa993b | 261 | * vtbl pointer, skip this part */ |
2c63a960 JB |
262 | if ((len == n_baseclasses) |
263 | || ((len - n_baseclasses == 1) | |
264 | && TYPE_HAS_VTABLE (type) | |
265 | && STREQN (TYPE_FIELD_NAME (type, n_baseclasses), | |
266 | hpacc_vtbl_ptr_name, 5)) | |
267 | || !len) | |
c906108c SS |
268 | fprintf_filtered (stream, "<No data fields>"); |
269 | else | |
270 | { | |
271 | extern int inspect_it; | |
272 | ||
273 | if (dont_print_statmem == 0) | |
274 | { | |
275 | /* If we're at top level, carve out a completely fresh | |
276 | chunk of the obstack and use that until this particular | |
277 | invocation returns. */ | |
278 | tmp_obstack = dont_print_statmem_obstack; | |
279 | obstack_finish (&dont_print_statmem_obstack); | |
280 | } | |
281 | ||
282 | for (i = n_baseclasses; i < len; i++) | |
283 | { | |
284 | /* If requested, skip printing of static fields. */ | |
285 | if (!static_field_print && TYPE_FIELD_STATIC (type, i)) | |
286 | continue; | |
287 | ||
c5aa993b | 288 | /* If a vtable pointer appears, we'll print it out later */ |
2c63a960 JB |
289 | if (TYPE_HAS_VTABLE (type) |
290 | && STREQN (TYPE_FIELD_NAME (type, i), hpacc_vtbl_ptr_name, 5)) | |
c5aa993b JM |
291 | continue; |
292 | ||
c906108c SS |
293 | if (fields_seen) |
294 | fprintf_filtered (stream, ", "); | |
295 | else if (n_baseclasses > 0) | |
296 | { | |
297 | if (pretty) | |
298 | { | |
299 | fprintf_filtered (stream, "\n"); | |
300 | print_spaces_filtered (2 + 2 * recurse, stream); | |
301 | fputs_filtered ("members of ", stream); | |
302 | fputs_filtered (type_name_no_tag (type), stream); | |
303 | fputs_filtered (": ", stream); | |
304 | } | |
305 | } | |
306 | fields_seen = 1; | |
307 | ||
308 | if (pretty) | |
309 | { | |
310 | fprintf_filtered (stream, "\n"); | |
311 | print_spaces_filtered (2 + 2 * recurse, stream); | |
312 | } | |
c5aa993b | 313 | else |
c906108c SS |
314 | { |
315 | wrap_here (n_spaces (2 + 2 * recurse)); | |
316 | } | |
317 | if (inspect_it) | |
318 | { | |
319 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR) | |
320 | fputs_filtered ("\"( ptr \"", stream); | |
321 | else | |
322 | fputs_filtered ("\"( nodef \"", stream); | |
323 | if (TYPE_FIELD_STATIC (type, i)) | |
324 | fputs_filtered ("static ", stream); | |
325 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
326 | language_cplus, | |
327 | DMGL_PARAMS | DMGL_ANSI); | |
328 | fputs_filtered ("\" \"", stream); | |
329 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
330 | language_cplus, | |
331 | DMGL_PARAMS | DMGL_ANSI); | |
332 | fputs_filtered ("\") \"", stream); | |
333 | } | |
334 | else | |
335 | { | |
336 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
337 | ||
338 | if (TYPE_FIELD_STATIC (type, i)) | |
339 | fputs_filtered ("static ", stream); | |
340 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
341 | language_cplus, | |
342 | DMGL_PARAMS | DMGL_ANSI); | |
343 | annotate_field_name_end (); | |
344 | /* do not print leading '=' in case of anonymous unions */ | |
345 | if (strcmp (TYPE_FIELD_NAME (type, i), "")) | |
346 | fputs_filtered (" = ", stream); | |
347 | annotate_field_value (); | |
348 | } | |
349 | ||
350 | if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i)) | |
351 | { | |
6943961c | 352 | struct value *v; |
c906108c SS |
353 | |
354 | /* Bitfields require special handling, especially due to byte | |
c5aa993b | 355 | order problems. */ |
c906108c SS |
356 | if (TYPE_FIELD_IGNORE (type, i)) |
357 | { | |
c5aa993b | 358 | fputs_filtered ("<optimized out or zero length>", stream); |
c906108c SS |
359 | } |
360 | else | |
361 | { | |
2c63a960 JB |
362 | v = value_from_longest |
363 | (TYPE_FIELD_TYPE (type, i), | |
364 | unpack_field_as_long (type, valaddr + offset, i)); | |
c906108c | 365 | |
2c63a960 JB |
366 | val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), |
367 | 0, 0, stream, format, 0, recurse + 1, pretty); | |
c906108c SS |
368 | } |
369 | } | |
370 | else | |
371 | { | |
372 | if (TYPE_FIELD_IGNORE (type, i)) | |
373 | { | |
c5aa993b | 374 | fputs_filtered ("<optimized out or zero length>", stream); |
c906108c SS |
375 | } |
376 | else if (TYPE_FIELD_STATIC (type, i)) | |
377 | { | |
6943961c | 378 | struct value *v = value_static_field (type, i); |
c906108c SS |
379 | if (v == NULL) |
380 | fputs_filtered ("<optimized out>", stream); | |
381 | else | |
382 | cp_print_static_field (TYPE_FIELD_TYPE (type, i), v, | |
383 | stream, format, recurse + 1, | |
384 | pretty); | |
385 | } | |
386 | else | |
387 | { | |
c5aa993b | 388 | val_print (TYPE_FIELD_TYPE (type, i), |
2c63a960 | 389 | valaddr, offset + TYPE_FIELD_BITPOS (type, i) / 8, |
c5aa993b JM |
390 | address + TYPE_FIELD_BITPOS (type, i) / 8, |
391 | stream, format, 0, recurse + 1, pretty); | |
c906108c SS |
392 | } |
393 | } | |
394 | annotate_field_end (); | |
395 | } | |
396 | ||
397 | if (dont_print_statmem == 0) | |
398 | { | |
399 | /* Free the space used to deal with the printing | |
400 | of the members from top level. */ | |
401 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
402 | dont_print_statmem_obstack = tmp_obstack; | |
403 | } | |
404 | ||
405 | if (pretty) | |
406 | { | |
407 | fprintf_filtered (stream, "\n"); | |
408 | print_spaces_filtered (2 * recurse, stream); | |
409 | } | |
c5aa993b JM |
410 | } /* if there are data fields */ |
411 | /* Now print out the virtual table pointer if there is one */ | |
2c63a960 JB |
412 | if (TYPE_HAS_VTABLE (type) |
413 | && STREQN (TYPE_FIELD_NAME (type, n_baseclasses), | |
414 | hpacc_vtbl_ptr_name, | |
415 | 5)) | |
c906108c | 416 | { |
6943961c | 417 | struct value *v; |
c5aa993b | 418 | /* First get the virtual table pointer and print it out */ |
c906108c SS |
419 | |
420 | #if 0 | |
421 | fputs_filtered ("__vfp = ", stream); | |
422 | #endif | |
423 | ||
424 | fputs_filtered (", Virtual table at ", stream); | |
425 | ||
426 | /* pai: FIXME 32x64 problem? */ | |
427 | /* Not sure what the best notation is in the case where there is no | |
428 | baseclass name. */ | |
4478b372 | 429 | v = value_from_pointer (lookup_pointer_type (builtin_type_unsigned_long), |
c5aa993b | 430 | *(unsigned long *) (valaddr + offset)); |
c906108c SS |
431 | |
432 | val_print (VALUE_TYPE (v), VALUE_CONTENTS (v), 0, 0, | |
c5aa993b | 433 | stream, format, 0, recurse + 1, pretty); |
c906108c SS |
434 | fields_seen = 1; |
435 | ||
436 | if (vtblprint) | |
c5aa993b JM |
437 | { |
438 | /* Print out function pointers in vtable. */ | |
c906108c | 439 | |
c5aa993b JM |
440 | /* FIXME: then-clause is for non-RRBC layout of virtual |
441 | * table. The RRBC case in the else-clause is yet to be | |
442 | * implemented. The if (1) below should be changed to a | |
443 | * test for whether the executable we have was compiled | |
444 | * with a version of HP aCC that doesn't have RRBC | |
445 | * support. */ | |
c906108c | 446 | |
c5aa993b JM |
447 | if (1) |
448 | { | |
2c63a960 JB |
449 | /* no RRBC support; function pointers embedded directly |
450 | 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 |
2c63a960 JB |
458 | fprintf_filtered (stream, "%d entr%s: ", vfuncs, |
459 | vfuncs == 1 ? "y" : "ies"); | |
c906108c | 460 | #else |
c5aa993b | 461 | fputs_filtered ("not implemented", stream); |
c906108c SS |
462 | |
463 | ||
464 | #endif | |
465 | ||
c5aa993b | 466 | /* recursive function that prints all virtual function entries */ |
c906108c | 467 | #if 0 |
2c63a960 JB |
468 | cp_print_hpacc_virtual_table_entries (real_type, &vfuncs, v, |
469 | stream, format, recurse, | |
470 | pretty); | |
c906108c | 471 | #endif |
c5aa993b JM |
472 | fputs_filtered ("}", stream); |
473 | } /* non-RRBC case */ | |
474 | else | |
475 | { | |
4d33f415 | 476 | /* FIXME -- see comments above */ |
c5aa993b JM |
477 | /* RRBC support present; function pointers are found |
478 | * by indirection through the class segment entries. */ | |
479 | ||
480 | ||
481 | } /* RRBC case */ | |
482 | } /* if vtblprint */ | |
c906108c SS |
483 | |
484 | if (pretty) | |
485 | { | |
486 | fprintf_filtered (stream, "\n"); | |
487 | print_spaces_filtered (2 * recurse, stream); | |
488 | } | |
489 | ||
c5aa993b JM |
490 | } /* if vtable exists */ |
491 | ||
c906108c SS |
492 | fprintf_filtered (stream, "}"); |
493 | } | |
494 | ||
495 | /* Special val_print routine to avoid printing multiple copies of virtual | |
496 | baseclasses. */ | |
497 | ||
498 | static void | |
fba45db2 KB |
499 | cp_print_value (struct type *type, struct type *real_type, char *valaddr, |
500 | int offset, CORE_ADDR address, struct ui_file *stream, | |
501 | int format, int recurse, enum val_prettyprint pretty, | |
502 | struct type **dont_print_vb) | |
c906108c SS |
503 | { |
504 | struct obstack tmp_obstack; | |
505 | struct type **last_dont_print | |
2c63a960 | 506 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); |
c906108c | 507 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); |
b9d652ac DJ |
508 | int thisoffset; |
509 | struct type *thistype; | |
c906108c SS |
510 | |
511 | if (dont_print_vb == 0) | |
512 | { | |
513 | /* If we're at top level, carve out a completely fresh | |
c5aa993b JM |
514 | chunk of the obstack and use that until this particular |
515 | invocation returns. */ | |
c906108c SS |
516 | tmp_obstack = dont_print_vb_obstack; |
517 | /* Bump up the high-water mark. Now alpha is omega. */ | |
518 | obstack_finish (&dont_print_vb_obstack); | |
519 | } | |
520 | ||
521 | for (i = 0; i < n_baseclasses; i++) | |
522 | { | |
523 | int boffset; | |
524 | int skip; | |
525 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); | |
526 | char *basename = TYPE_NAME (baseclass); | |
527 | char *base_valaddr; | |
528 | ||
529 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
530 | { | |
531 | struct type **first_dont_print | |
2c63a960 | 532 | = (struct type **) obstack_base (&dont_print_vb_obstack); |
c906108c | 533 | |
c5aa993b | 534 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) |
2c63a960 | 535 | - first_dont_print; |
c906108c SS |
536 | |
537 | while (--j >= 0) | |
538 | if (baseclass == first_dont_print[j]) | |
539 | goto flush_it; | |
540 | ||
541 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
542 | } | |
543 | ||
b9d652ac DJ |
544 | thisoffset = offset; |
545 | thistype = real_type; | |
c906108c | 546 | if (TYPE_HAS_VTABLE (type) && BASETYPE_VIA_VIRTUAL (type, i)) |
c5aa993b JM |
547 | { |
548 | /* Assume HP/Taligent runtime convention */ | |
549 | find_rt_vbase_offset (type, TYPE_BASECLASS (type, i), | |
550 | valaddr, offset, &boffset, &skip); | |
551 | if (skip >= 0) | |
2c63a960 JB |
552 | error ("Virtual base class offset not found from vtable while" |
553 | " printing"); | |
c5aa993b JM |
554 | base_valaddr = valaddr; |
555 | } | |
c906108c | 556 | else |
c5aa993b | 557 | { |
2c63a960 JB |
558 | boffset = baseclass_offset (type, i, |
559 | valaddr + offset, | |
560 | address + offset); | |
c5aa993b | 561 | skip = ((boffset == -1) || (boffset + offset) < 0) ? 1 : -1; |
c906108c | 562 | |
c5aa993b JM |
563 | if (BASETYPE_VIA_VIRTUAL (type, i)) |
564 | { | |
2c63a960 JB |
565 | /* The virtual base class pointer might have been |
566 | clobbered by the user program. Make sure that it | |
567 | still points to a valid memory location. */ | |
c906108c | 568 | |
2c63a960 JB |
569 | if (boffset != -1 |
570 | && ((boffset + offset) < 0 | |
571 | || (boffset + offset) >= TYPE_LENGTH (type))) | |
c5aa993b | 572 | { |
34c0bd93 | 573 | /* FIXME (alloca): unsafe if baseclass is really really large. */ |
c5aa993b | 574 | base_valaddr = (char *) alloca (TYPE_LENGTH (baseclass)); |
b9d652ac | 575 | if (target_read_memory (address + offset + boffset, base_valaddr, |
c5aa993b JM |
576 | TYPE_LENGTH (baseclass)) != 0) |
577 | skip = 1; | |
b9d652ac DJ |
578 | thisoffset = 0; |
579 | boffset = 0; | |
580 | thistype = baseclass; | |
c5aa993b JM |
581 | } |
582 | else | |
583 | base_valaddr = valaddr; | |
584 | } | |
585 | else | |
586 | base_valaddr = valaddr; | |
c906108c SS |
587 | } |
588 | ||
589 | /* now do the printing */ | |
590 | if (pretty) | |
591 | { | |
592 | fprintf_filtered (stream, "\n"); | |
593 | print_spaces_filtered (2 * recurse, stream); | |
594 | } | |
595 | fputs_filtered ("<", stream); | |
596 | /* Not sure what the best notation is in the case where there is no | |
c5aa993b | 597 | baseclass name. */ |
c906108c SS |
598 | fputs_filtered (basename ? basename : "", stream); |
599 | fputs_filtered ("> = ", stream); | |
600 | ||
601 | ||
602 | if (skip >= 1) | |
603 | fprintf_filtered (stream, "<invalid address>"); | |
604 | else | |
b9d652ac DJ |
605 | cp_print_value_fields (baseclass, thistype, base_valaddr, |
606 | thisoffset + boffset, address, stream, format, | |
2c63a960 JB |
607 | recurse, pretty, |
608 | ((struct type **) | |
609 | obstack_base (&dont_print_vb_obstack)), | |
c906108c SS |
610 | 0); |
611 | fputs_filtered (", ", stream); | |
612 | ||
613 | flush_it: | |
614 | ; | |
615 | } | |
616 | ||
617 | if (dont_print_vb == 0) | |
618 | { | |
619 | /* Free the space used to deal with the printing | |
c5aa993b | 620 | of this type from top level. */ |
c906108c SS |
621 | obstack_free (&dont_print_vb_obstack, last_dont_print); |
622 | /* Reset watermark so that we can continue protecting | |
c5aa993b | 623 | ourselves from whatever we were protecting ourselves. */ |
c906108c SS |
624 | dont_print_vb_obstack = tmp_obstack; |
625 | } | |
626 | } | |
627 | ||
628 | /* Print value of a static member. | |
629 | To avoid infinite recursion when printing a class that contains | |
630 | a static instance of the class, we keep the addresses of all printed | |
631 | static member classes in an obstack and refuse to print them more | |
632 | than once. | |
633 | ||
634 | VAL contains the value to print, TYPE, STREAM, RECURSE, and PRETTY | |
635 | have the same meanings as in c_val_print. */ | |
636 | ||
637 | static void | |
2c63a960 | 638 | cp_print_static_field (struct type *type, |
6943961c | 639 | struct value *val, |
2c63a960 JB |
640 | struct ui_file *stream, |
641 | int format, | |
642 | int recurse, | |
643 | enum val_prettyprint pretty) | |
c906108c SS |
644 | { |
645 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
646 | { | |
647 | CORE_ADDR *first_dont_print; | |
648 | int i; | |
649 | ||
650 | first_dont_print | |
c5aa993b JM |
651 | = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); |
652 | i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) | |
c906108c SS |
653 | - first_dont_print; |
654 | ||
655 | while (--i >= 0) | |
656 | { | |
657 | if (VALUE_ADDRESS (val) == first_dont_print[i]) | |
658 | { | |
2c63a960 JB |
659 | fputs_filtered ("<same as static member of an already" |
660 | " seen type>", | |
c906108c SS |
661 | stream); |
662 | return; | |
663 | } | |
664 | } | |
665 | ||
666 | obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val), | |
667 | sizeof (CORE_ADDR)); | |
668 | ||
669 | CHECK_TYPEDEF (type); | |
2c63a960 JB |
670 | cp_print_value_fields (type, type, VALUE_CONTENTS_ALL (val), |
671 | VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val), | |
c906108c SS |
672 | stream, format, recurse, pretty, NULL, 1); |
673 | return; | |
674 | } | |
2c63a960 JB |
675 | val_print (type, VALUE_CONTENTS_ALL (val), |
676 | VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val), | |
c906108c SS |
677 | stream, format, 0, recurse, pretty); |
678 | } | |
679 | ||
680 | void | |
fba45db2 KB |
681 | cp_print_class_member (char *valaddr, struct type *domain, |
682 | struct ui_file *stream, char *prefix) | |
c906108c | 683 | { |
c5aa993b | 684 | |
c906108c SS |
685 | /* VAL is a byte offset into the structure type DOMAIN. |
686 | Find the name of the field for that offset and | |
687 | print it. */ | |
688 | int extra = 0; | |
689 | int bits = 0; | |
690 | register unsigned int i; | |
691 | unsigned len = TYPE_NFIELDS (domain); | |
692 | ||
693 | /* @@ Make VAL into bit offset */ | |
694 | ||
695 | /* Note: HP aCC generates offsets that are the real byte offsets added | |
696 | to a constant bias 0x20000000 (1 << 29). This constant bias gets | |
697 | shifted out in the code below -- joyous happenstance! */ | |
698 | ||
699 | /* Note: HP cfront uses a constant bias of 1; if we support this | |
c5aa993b JM |
700 | compiler ever, we will have to adjust the computation below */ |
701 | ||
c906108c SS |
702 | LONGEST val = unpack_long (builtin_type_int, valaddr) << 3; |
703 | for (i = TYPE_N_BASECLASSES (domain); i < len; i++) | |
704 | { | |
705 | int bitpos = TYPE_FIELD_BITPOS (domain, i); | |
706 | QUIT; | |
707 | if (val == bitpos) | |
708 | break; | |
709 | if (val < bitpos && i != 0) | |
710 | { | |
711 | /* Somehow pointing into a field. */ | |
712 | i -= 1; | |
713 | extra = (val - TYPE_FIELD_BITPOS (domain, i)); | |
714 | if (extra & 0x7) | |
715 | bits = 1; | |
716 | else | |
717 | extra >>= 3; | |
718 | break; | |
719 | } | |
720 | } | |
721 | if (i < len) | |
722 | { | |
723 | char *name; | |
724 | fprintf_filtered (stream, prefix); | |
725 | name = type_name_no_tag (domain); | |
726 | if (name) | |
c5aa993b | 727 | fputs_filtered (name, stream); |
c906108c SS |
728 | else |
729 | c_type_print_base (domain, stream, 0, 0); | |
730 | fprintf_filtered (stream, "::"); | |
731 | fputs_filtered (TYPE_FIELD_NAME (domain, i), stream); | |
732 | if (extra) | |
733 | fprintf_filtered (stream, " + %d bytes", extra); | |
734 | if (bits) | |
735 | fprintf_filtered (stream, " (offset in bits)"); | |
736 | } | |
737 | else | |
d4f3574e | 738 | fprintf_filtered (stream, "%ld", (long) (val >> 3)); |
c906108c SS |
739 | } |
740 | ||
741 | ||
742 | /* This function prints out virtual table entries for a class; it | |
743 | * recurses on the base classes to find all virtual functions | |
744 | * available in a class. | |
745 | * | |
746 | * pai/1997-05-21 Note: As the name suggests, it's currently | |
747 | * implemented for HP aCC runtime only. g++ objects are handled | |
748 | * differently and I have made no attempt to fold that logic in | |
749 | * here. The runtime layout is different for the two cases. Also, | |
750 | * this currently has only the code for non-RRBC layouts generated by | |
751 | * the HP aCC compiler; RRBC code is stubbed out and will have to be | |
752 | * added later. */ | |
c5aa993b | 753 | |
c906108c SS |
754 | |
755 | static void | |
fba45db2 | 756 | cp_print_hpacc_virtual_table_entries (struct type *type, int *vfuncs, |
6943961c | 757 | struct value *v, struct ui_file *stream, |
fba45db2 KB |
758 | int format, int recurse, |
759 | enum val_prettyprint pretty) | |
c906108c SS |
760 | { |
761 | int fn, oi; | |
762 | ||
763 | /* pai: FIXME this function doesn't work. It should handle a given | |
764 | * virtual function only once (latest redefinition in class hierarchy) | |
765 | */ | |
766 | ||
c5aa993b JM |
767 | /* Recursion on other classes that can share the same vtable */ |
768 | struct type *pbc = primary_base_class (type); | |
c906108c | 769 | if (pbc) |
2c63a960 JB |
770 | cp_print_hpacc_virtual_table_entries (pbc, vfuncs, v, stream, format, |
771 | recurse, pretty); | |
c5aa993b | 772 | |
c906108c SS |
773 | /* Now deal with vfuncs declared in this class */ |
774 | for (fn = 0; fn < TYPE_NFN_FIELDS (type); fn++) | |
775 | for (oi = 0; oi < TYPE_FN_FIELDLIST_LENGTH (type, fn); oi++) | |
776 | if (TYPE_FN_FIELD_VIRTUAL_P (TYPE_FN_FIELDLIST1 (type, fn), oi)) | |
c5aa993b JM |
777 | { |
778 | char *vf_name; | |
2c63a960 | 779 | const char *field_physname; |
c5aa993b JM |
780 | |
781 | /* virtual function offset */ | |
2c63a960 JB |
782 | int vx = (TYPE_FN_FIELD_VOFFSET (TYPE_FN_FIELDLIST1 (type, fn), oi) |
783 | - 1); | |
c5aa993b JM |
784 | |
785 | /* Get the address of the vfunction entry */ | |
6943961c | 786 | struct value *vf = value_copy (v); |
c5aa993b JM |
787 | if (VALUE_LAZY (vf)) |
788 | (void) value_fetch_lazy (vf); | |
2c63a960 JB |
789 | /* adjust by offset */ |
790 | vf->aligner.contents[0] += 4 * (HP_ACC_VFUNC_START + vx); | |
c5aa993b JM |
791 | vf = value_ind (vf); /* get the entry */ |
792 | VALUE_TYPE (vf) = VALUE_TYPE (v); /* make it a pointer */ | |
793 | ||
794 | /* print out the entry */ | |
795 | val_print (VALUE_TYPE (vf), VALUE_CONTENTS (vf), 0, 0, | |
796 | stream, format, 0, recurse + 1, pretty); | |
2c63a960 JB |
797 | field_physname |
798 | = TYPE_FN_FIELD_PHYSNAME (TYPE_FN_FIELDLIST1 (type, fn), oi); | |
799 | /* pai: (temp) FIXME Maybe this should be DMGL_ANSI */ | |
800 | vf_name = cplus_demangle (field_physname, DMGL_ARM); | |
c5aa993b JM |
801 | fprintf_filtered (stream, " %s", vf_name); |
802 | if (--(*vfuncs) > 0) | |
803 | fputs_filtered (", ", stream); | |
804 | } | |
c906108c SS |
805 | } |
806 | ||
807 | ||
808 | ||
809 | void | |
fba45db2 | 810 | _initialize_cp_valprint (void) |
c906108c SS |
811 | { |
812 | add_show_from_set | |
813 | (add_set_cmd ("static-members", class_support, var_boolean, | |
c5aa993b | 814 | (char *) &static_field_print, |
c906108c SS |
815 | "Set printing of C++ static members.", |
816 | &setprintlist), | |
817 | &showprintlist); | |
818 | /* Turn on printing of static fields. */ | |
819 | static_field_print = 1; | |
820 | ||
821 | add_show_from_set | |
c5aa993b | 822 | (add_set_cmd ("vtbl", class_support, var_boolean, (char *) &vtblprint, |
c906108c SS |
823 | "Set printing of C++ virtual function tables.", |
824 | &setprintlist), | |
825 | &showprintlist); | |
826 | ||
827 | add_show_from_set | |
c5aa993b JM |
828 | (add_set_cmd ("object", class_support, var_boolean, (char *) &objectprint, |
829 | "Set printing of object's derived type based on vtable info.", | |
c906108c SS |
830 | &setprintlist), |
831 | &showprintlist); | |
832 | ||
833 | /* Give people the defaults which they are used to. */ | |
834 | objectprint = 0; | |
835 | vtblprint = 0; | |
836 | obstack_begin (&dont_print_vb_obstack, 32 * sizeof (struct type *)); | |
837 | obstack_specify_allocation (&dont_print_statmem_obstack, | |
838 | 32 * sizeof (CORE_ADDR), sizeof (CORE_ADDR), | |
b8c9b27d | 839 | xmalloc, xfree); |
c906108c | 840 | } |