Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Support for printing C++ values for GDB, the GNU debugger. |
a2bd3dcd AC |
2 | |
3 | Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, | |
4 | 1997, 2000, 2001, 2002, 2003, 2005 Free Software Foundation, Inc. | |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
22 | |
23 | #include "defs.h" | |
04ea0df1 | 24 | #include "gdb_obstack.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "gdbtypes.h" | |
27 | #include "expression.h" | |
28 | #include "value.h" | |
29 | #include "command.h" | |
30 | #include "gdbcmd.h" | |
31 | #include "demangle.h" | |
32 | #include "annotate.h" | |
33 | #include "gdb_string.h" | |
34 | #include "c-lang.h" | |
35 | #include "target.h" | |
b9d652ac | 36 | #include "cp-abi.h" |
973177d3 | 37 | #include "valprint.h" |
c906108c | 38 | |
c906108c SS |
39 | int vtblprint; /* Controls printing of vtbl's */ |
40 | int objectprint; /* Controls looking up an object's derived type | |
41 | using what we find in its vtables. */ | |
c5aa993b | 42 | int static_field_print; /* Controls printing of static fields. */ |
c906108c SS |
43 | |
44 | static struct obstack dont_print_vb_obstack; | |
45 | static struct obstack dont_print_statmem_obstack; | |
46 | ||
a14ed312 | 47 | extern void _initialize_cp_valprint (void); |
392a587b | 48 | |
6943961c | 49 | static void cp_print_static_field (struct type *, struct value *, |
d9fcf2fb JM |
50 | struct ui_file *, int, int, |
51 | enum val_prettyprint); | |
c906108c | 52 | |
a2bd3dcd AC |
53 | static void cp_print_value (struct type *, struct type *, const bfd_byte *, |
54 | int, CORE_ADDR, struct ui_file *, int, int, | |
d9fcf2fb | 55 | enum val_prettyprint, struct type **); |
c906108c | 56 | |
d9fcf2fb | 57 | static void cp_print_hpacc_virtual_table_entries (struct type *, int *, |
6943961c | 58 | struct value *, |
d9fcf2fb JM |
59 | struct ui_file *, int, |
60 | int, | |
61 | enum val_prettyprint); | |
c906108c SS |
62 | |
63 | ||
64 | void | |
9519ccd5 | 65 | cp_print_class_method (const bfd_byte *valaddr, |
2c63a960 JB |
66 | struct type *type, |
67 | struct ui_file *stream) | |
c906108c SS |
68 | { |
69 | struct type *domain; | |
70 | struct fn_field *f = NULL; | |
71 | int j = 0; | |
72 | int len2; | |
73 | int offset; | |
74 | char *kind = ""; | |
75 | CORE_ADDR addr; | |
76 | struct symbol *sym; | |
77 | unsigned len; | |
78 | unsigned int i; | |
79 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); | |
80 | ||
81 | domain = TYPE_DOMAIN_TYPE (target_type); | |
c5aa993b | 82 | if (domain == (struct type *) NULL) |
c906108c SS |
83 | { |
84 | fprintf_filtered (stream, "<unknown>"); | |
85 | return; | |
86 | } | |
1947a811 | 87 | addr = unpack_pointer (type, valaddr); |
c906108c SS |
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 | |
de17c821 | 97 | check_stub_method_group (domain, i); |
c906108c SS |
98 | for (j = 0; j < len2; j++) |
99 | { | |
c906108c SS |
100 | if (TYPE_FN_FIELD_VOFFSET (f, j) == offset) |
101 | { | |
c906108c SS |
102 | kind = "virtual "; |
103 | goto common; | |
104 | } | |
105 | } | |
106 | } | |
107 | } | |
108 | else | |
109 | { | |
110 | sym = find_pc_function (addr); | |
111 | if (sym == 0) | |
112 | { | |
c5aa993b | 113 | /* 1997-08-01 Currently unsupported with HP aCC */ |
f83f82bc | 114 | if (deprecated_hp_som_som_object_present) |
c5aa993b JM |
115 | { |
116 | fputs_filtered ("?? <not supported with HP aCC>", stream); | |
117 | return; | |
118 | } | |
c906108c SS |
119 | error ("invalid pointer to member function"); |
120 | } | |
121 | len = TYPE_NFN_FIELDS (domain); | |
122 | for (i = 0; i < len; i++) | |
123 | { | |
124 | f = TYPE_FN_FIELDLIST1 (domain, i); | |
125 | len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); | |
c5aa993b | 126 | |
1b2ef1b6 | 127 | check_stub_method_group (domain, i); |
c906108c SS |
128 | for (j = 0; j < len2; j++) |
129 | { | |
22abf04a | 130 | if (strcmp (DEPRECATED_SYMBOL_NAME (sym), TYPE_FN_FIELD_PHYSNAME (f, j)) |
762f08a3 | 131 | == 0) |
de17c821 | 132 | goto common; |
c906108c SS |
133 | } |
134 | } | |
135 | } | |
2c63a960 | 136 | common: |
c906108c SS |
137 | if (i < len) |
138 | { | |
139 | char *demangled_name; | |
140 | ||
141 | fprintf_filtered (stream, "&"); | |
306d9ac5 | 142 | fputs_filtered (kind, stream); |
c906108c SS |
143 | demangled_name = cplus_demangle (TYPE_FN_FIELD_PHYSNAME (f, j), |
144 | DMGL_ANSI | DMGL_PARAMS); | |
145 | if (demangled_name == NULL) | |
146 | fprintf_filtered (stream, "<badly mangled name %s>", | |
147 | TYPE_FN_FIELD_PHYSNAME (f, j)); | |
148 | else | |
149 | { | |
150 | fputs_filtered (demangled_name, stream); | |
b8c9b27d | 151 | xfree (demangled_name); |
c906108c SS |
152 | } |
153 | } | |
154 | else | |
155 | { | |
156 | fprintf_filtered (stream, "("); | |
157 | type_print (type, "", stream, -1); | |
158 | fprintf_filtered (stream, ") %d", (int) addr >> 3); | |
159 | } | |
160 | } | |
161 | ||
8343f86c | 162 | /* GCC versions after 2.4.5 use this. */ |
2c63a960 | 163 | const char vtbl_ptr_name[] = "__vtbl_ptr_type"; |
c906108c | 164 | |
8343f86c | 165 | /* HP aCC uses different names. */ |
2c63a960 JB |
166 | const char hpacc_vtbl_ptr_name[] = "__vfp"; |
167 | const char hpacc_vtbl_ptr_type_name[] = "__vftyp"; | |
c906108c | 168 | |
c906108c SS |
169 | /* Return truth value for assertion that TYPE is of the type |
170 | "pointer to virtual function". */ | |
171 | ||
172 | int | |
fba45db2 | 173 | cp_is_vtbl_ptr_type (struct type *type) |
c906108c SS |
174 | { |
175 | char *typename = type_name_no_tag (type); | |
176 | ||
8343f86c | 177 | return (typename != NULL && !strcmp (typename, vtbl_ptr_name)); |
c906108c SS |
178 | } |
179 | ||
180 | /* Return truth value for the assertion that TYPE is of the type | |
181 | "pointer to virtual function table". */ | |
182 | ||
183 | int | |
fba45db2 | 184 | cp_is_vtbl_member (struct type *type) |
c906108c | 185 | { |
0e5e3ea6 PS |
186 | /* With older versions of g++, the vtbl field pointed to an array |
187 | of structures. Nowadays it points directly to the structure. */ | |
c906108c SS |
188 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
189 | { | |
190 | type = TYPE_TARGET_TYPE (type); | |
191 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
192 | { | |
193 | type = TYPE_TARGET_TYPE (type); | |
c5aa993b JM |
194 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */ |
195 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */ | |
c906108c SS |
196 | { |
197 | /* Virtual functions tables are full of pointers | |
c5aa993b | 198 | to virtual functions. */ |
c906108c SS |
199 | return cp_is_vtbl_ptr_type (type); |
200 | } | |
201 | } | |
0e5e3ea6 PS |
202 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) /* if not using thunks */ |
203 | { | |
204 | return cp_is_vtbl_ptr_type (type); | |
205 | } | |
206 | else if (TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */ | |
207 | { | |
208 | /* The type name of the thunk pointer is NULL when using dwarf2. | |
209 | We could test for a pointer to a function, but there is | |
210 | no type info for the virtual table either, so it wont help. */ | |
211 | return cp_is_vtbl_ptr_type (type); | |
212 | } | |
c906108c SS |
213 | } |
214 | return 0; | |
215 | } | |
216 | ||
217 | /* Mutually recursive subroutines of cp_print_value and c_val_print to | |
218 | print out a structure's fields: cp_print_value_fields and cp_print_value. | |
c5aa993b | 219 | |
c906108c SS |
220 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the |
221 | same meanings as in cp_print_value and c_val_print. | |
222 | ||
223 | 2nd argument REAL_TYPE is used to carry over the type of the derived | |
224 | class across the recursion to base classes. | |
225 | ||
226 | DONT_PRINT is an array of baseclass types that we | |
227 | should not print, or zero if called from top level. */ | |
228 | ||
229 | void | |
a2bd3dcd AC |
230 | cp_print_value_fields (struct type *type, struct type *real_type, |
231 | const bfd_byte *valaddr, int offset, CORE_ADDR address, | |
232 | struct ui_file *stream, int format, int recurse, | |
233 | enum val_prettyprint pretty, | |
234 | struct type **dont_print_vb,int dont_print_statmem) | |
c906108c SS |
235 | { |
236 | int i, len, n_baseclasses; | |
237 | struct obstack tmp_obstack; | |
238 | char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack); | |
239 | int fields_seen = 0; | |
240 | ||
241 | CHECK_TYPEDEF (type); | |
242 | ||
243 | fprintf_filtered (stream, "{"); | |
244 | len = TYPE_NFIELDS (type); | |
245 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
246 | ||
247 | /* First, print out baseclasses such that we don't print | |
248 | duplicates of virtual baseclasses. */ | |
249 | ||
250 | if (n_baseclasses > 0) | |
251 | cp_print_value (type, real_type, valaddr, offset, address, stream, | |
c5aa993b | 252 | format, recurse + 1, pretty, dont_print_vb); |
c906108c SS |
253 | |
254 | /* Second, print out data fields */ | |
255 | ||
256 | /* If there are no data fields, or if the only field is the | |
c5aa993b | 257 | * vtbl pointer, skip this part */ |
2c63a960 JB |
258 | if ((len == n_baseclasses) |
259 | || ((len - n_baseclasses == 1) | |
260 | && TYPE_HAS_VTABLE (type) | |
5cb316ef AC |
261 | && strncmp (TYPE_FIELD_NAME (type, n_baseclasses), |
262 | hpacc_vtbl_ptr_name, 5) == 0) | |
2c63a960 | 263 | || !len) |
c906108c SS |
264 | fprintf_filtered (stream, "<No data fields>"); |
265 | else | |
266 | { | |
c906108c SS |
267 | if (dont_print_statmem == 0) |
268 | { | |
269 | /* If we're at top level, carve out a completely fresh | |
270 | chunk of the obstack and use that until this particular | |
271 | invocation returns. */ | |
272 | tmp_obstack = dont_print_statmem_obstack; | |
273 | obstack_finish (&dont_print_statmem_obstack); | |
274 | } | |
275 | ||
276 | for (i = n_baseclasses; i < len; i++) | |
277 | { | |
278 | /* If requested, skip printing of static fields. */ | |
279 | if (!static_field_print && TYPE_FIELD_STATIC (type, i)) | |
280 | continue; | |
281 | ||
c5aa993b | 282 | /* If a vtable pointer appears, we'll print it out later */ |
2c63a960 | 283 | if (TYPE_HAS_VTABLE (type) |
5cb316ef AC |
284 | && strncmp (TYPE_FIELD_NAME (type, i), hpacc_vtbl_ptr_name, |
285 | 5) == 0) | |
c5aa993b JM |
286 | continue; |
287 | ||
c906108c SS |
288 | if (fields_seen) |
289 | fprintf_filtered (stream, ", "); | |
290 | else if (n_baseclasses > 0) | |
291 | { | |
292 | if (pretty) | |
293 | { | |
294 | fprintf_filtered (stream, "\n"); | |
295 | print_spaces_filtered (2 + 2 * recurse, stream); | |
296 | fputs_filtered ("members of ", stream); | |
297 | fputs_filtered (type_name_no_tag (type), stream); | |
298 | fputs_filtered (": ", stream); | |
299 | } | |
300 | } | |
301 | fields_seen = 1; | |
302 | ||
303 | if (pretty) | |
304 | { | |
305 | fprintf_filtered (stream, "\n"); | |
306 | print_spaces_filtered (2 + 2 * recurse, stream); | |
307 | } | |
c5aa993b | 308 | else |
c906108c SS |
309 | { |
310 | wrap_here (n_spaces (2 + 2 * recurse)); | |
311 | } | |
312 | if (inspect_it) | |
313 | { | |
314 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR) | |
315 | fputs_filtered ("\"( ptr \"", stream); | |
316 | else | |
317 | fputs_filtered ("\"( nodef \"", stream); | |
318 | if (TYPE_FIELD_STATIC (type, i)) | |
319 | fputs_filtered ("static ", stream); | |
320 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
321 | language_cplus, | |
322 | DMGL_PARAMS | DMGL_ANSI); | |
323 | fputs_filtered ("\" \"", stream); | |
324 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
325 | language_cplus, | |
326 | DMGL_PARAMS | DMGL_ANSI); | |
327 | fputs_filtered ("\") \"", stream); | |
328 | } | |
329 | else | |
330 | { | |
331 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
332 | ||
333 | if (TYPE_FIELD_STATIC (type, i)) | |
334 | fputs_filtered ("static ", stream); | |
335 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
336 | language_cplus, | |
337 | DMGL_PARAMS | DMGL_ANSI); | |
338 | annotate_field_name_end (); | |
339 | /* do not print leading '=' in case of anonymous unions */ | |
340 | if (strcmp (TYPE_FIELD_NAME (type, i), "")) | |
341 | fputs_filtered (" = ", stream); | |
342 | annotate_field_value (); | |
343 | } | |
344 | ||
345 | if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i)) | |
346 | { | |
6943961c | 347 | struct value *v; |
c906108c SS |
348 | |
349 | /* Bitfields require special handling, especially due to byte | |
c5aa993b | 350 | order problems. */ |
c906108c SS |
351 | if (TYPE_FIELD_IGNORE (type, i)) |
352 | { | |
c5aa993b | 353 | fputs_filtered ("<optimized out or zero length>", stream); |
c906108c SS |
354 | } |
355 | else | |
356 | { | |
2c63a960 JB |
357 | v = value_from_longest |
358 | (TYPE_FIELD_TYPE (type, i), | |
359 | unpack_field_as_long (type, valaddr + offset, i)); | |
c906108c | 360 | |
0fd88904 | 361 | val_print (TYPE_FIELD_TYPE (type, i), value_contents (v), |
2c63a960 | 362 | 0, 0, stream, format, 0, recurse + 1, pretty); |
c906108c SS |
363 | } |
364 | } | |
365 | else | |
366 | { | |
367 | if (TYPE_FIELD_IGNORE (type, i)) | |
368 | { | |
c5aa993b | 369 | fputs_filtered ("<optimized out or zero length>", stream); |
c906108c SS |
370 | } |
371 | else if (TYPE_FIELD_STATIC (type, i)) | |
372 | { | |
6943961c | 373 | struct value *v = value_static_field (type, i); |
c906108c SS |
374 | if (v == NULL) |
375 | fputs_filtered ("<optimized out>", stream); | |
376 | else | |
377 | cp_print_static_field (TYPE_FIELD_TYPE (type, i), v, | |
378 | stream, format, recurse + 1, | |
379 | pretty); | |
380 | } | |
381 | else | |
382 | { | |
c5aa993b | 383 | val_print (TYPE_FIELD_TYPE (type, i), |
2c63a960 | 384 | valaddr, offset + TYPE_FIELD_BITPOS (type, i) / 8, |
c5aa993b JM |
385 | address + TYPE_FIELD_BITPOS (type, i) / 8, |
386 | stream, format, 0, recurse + 1, pretty); | |
c906108c SS |
387 | } |
388 | } | |
389 | annotate_field_end (); | |
390 | } | |
391 | ||
392 | if (dont_print_statmem == 0) | |
393 | { | |
394 | /* Free the space used to deal with the printing | |
395 | of the members from top level. */ | |
396 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
397 | dont_print_statmem_obstack = tmp_obstack; | |
398 | } | |
399 | ||
400 | if (pretty) | |
401 | { | |
402 | fprintf_filtered (stream, "\n"); | |
403 | print_spaces_filtered (2 * recurse, stream); | |
404 | } | |
c5aa993b JM |
405 | } /* if there are data fields */ |
406 | /* Now print out the virtual table pointer if there is one */ | |
2c63a960 | 407 | if (TYPE_HAS_VTABLE (type) |
5cb316ef AC |
408 | && strncmp (TYPE_FIELD_NAME (type, n_baseclasses), |
409 | hpacc_vtbl_ptr_name, 5) == 0) | |
c906108c | 410 | { |
6943961c | 411 | struct value *v; |
c5aa993b | 412 | /* First get the virtual table pointer and print it out */ |
c906108c SS |
413 | |
414 | #if 0 | |
415 | fputs_filtered ("__vfp = ", stream); | |
416 | #endif | |
417 | ||
418 | fputs_filtered (", Virtual table at ", stream); | |
419 | ||
420 | /* pai: FIXME 32x64 problem? */ | |
421 | /* Not sure what the best notation is in the case where there is no | |
422 | baseclass name. */ | |
4478b372 | 423 | v = value_from_pointer (lookup_pointer_type (builtin_type_unsigned_long), |
c5aa993b | 424 | *(unsigned long *) (valaddr + offset)); |
c906108c | 425 | |
0fd88904 | 426 | val_print (value_type (v), value_contents (v), 0, 0, |
c5aa993b | 427 | stream, format, 0, recurse + 1, pretty); |
c906108c SS |
428 | fields_seen = 1; |
429 | ||
430 | if (vtblprint) | |
c5aa993b JM |
431 | { |
432 | /* Print out function pointers in vtable. */ | |
c906108c | 433 | |
c5aa993b JM |
434 | /* FIXME: then-clause is for non-RRBC layout of virtual |
435 | * table. The RRBC case in the else-clause is yet to be | |
436 | * implemented. The if (1) below should be changed to a | |
437 | * test for whether the executable we have was compiled | |
438 | * with a version of HP aCC that doesn't have RRBC | |
439 | * support. */ | |
c906108c | 440 | |
c5aa993b JM |
441 | if (1) |
442 | { | |
2c63a960 JB |
443 | /* no RRBC support; function pointers embedded directly |
444 | in vtable */ | |
c906108c | 445 | |
c5aa993b | 446 | int vfuncs = count_virtual_fns (real_type); |
c906108c | 447 | |
c5aa993b | 448 | fputs_filtered (" {", stream); |
c906108c | 449 | |
c5aa993b | 450 | /* FIXME : doesn't work at present */ |
c906108c | 451 | #if 0 |
2c63a960 JB |
452 | fprintf_filtered (stream, "%d entr%s: ", vfuncs, |
453 | vfuncs == 1 ? "y" : "ies"); | |
c906108c | 454 | #else |
c5aa993b | 455 | fputs_filtered ("not implemented", stream); |
c906108c SS |
456 | |
457 | ||
458 | #endif | |
459 | ||
c5aa993b | 460 | /* recursive function that prints all virtual function entries */ |
c906108c | 461 | #if 0 |
2c63a960 JB |
462 | cp_print_hpacc_virtual_table_entries (real_type, &vfuncs, v, |
463 | stream, format, recurse, | |
464 | pretty); | |
c906108c | 465 | #endif |
c5aa993b JM |
466 | fputs_filtered ("}", stream); |
467 | } /* non-RRBC case */ | |
468 | else | |
469 | { | |
4d33f415 | 470 | /* FIXME -- see comments above */ |
c5aa993b JM |
471 | /* RRBC support present; function pointers are found |
472 | * by indirection through the class segment entries. */ | |
473 | ||
474 | ||
475 | } /* RRBC case */ | |
476 | } /* if vtblprint */ | |
c906108c SS |
477 | |
478 | if (pretty) | |
479 | { | |
480 | fprintf_filtered (stream, "\n"); | |
481 | print_spaces_filtered (2 * recurse, stream); | |
482 | } | |
483 | ||
c5aa993b JM |
484 | } /* if vtable exists */ |
485 | ||
c906108c SS |
486 | fprintf_filtered (stream, "}"); |
487 | } | |
488 | ||
489 | /* Special val_print routine to avoid printing multiple copies of virtual | |
490 | baseclasses. */ | |
491 | ||
492 | static void | |
a2bd3dcd AC |
493 | cp_print_value (struct type *type, struct type *real_type, |
494 | const bfd_byte *valaddr, int offset, CORE_ADDR address, | |
495 | struct ui_file *stream, int format, int recurse, | |
496 | enum val_prettyprint pretty, struct type **dont_print_vb) | |
c906108c SS |
497 | { |
498 | struct obstack tmp_obstack; | |
499 | struct type **last_dont_print | |
2c63a960 | 500 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); |
c906108c | 501 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); |
b9d652ac DJ |
502 | int thisoffset; |
503 | struct type *thistype; | |
c906108c SS |
504 | |
505 | if (dont_print_vb == 0) | |
506 | { | |
507 | /* If we're at top level, carve out a completely fresh | |
c5aa993b JM |
508 | chunk of the obstack and use that until this particular |
509 | invocation returns. */ | |
c906108c SS |
510 | tmp_obstack = dont_print_vb_obstack; |
511 | /* Bump up the high-water mark. Now alpha is omega. */ | |
512 | obstack_finish (&dont_print_vb_obstack); | |
513 | } | |
514 | ||
515 | for (i = 0; i < n_baseclasses; i++) | |
516 | { | |
517 | int boffset; | |
518 | int skip; | |
519 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); | |
520 | char *basename = TYPE_NAME (baseclass); | |
a2bd3dcd | 521 | const bfd_byte *base_valaddr; |
c906108c SS |
522 | |
523 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
524 | { | |
525 | struct type **first_dont_print | |
2c63a960 | 526 | = (struct type **) obstack_base (&dont_print_vb_obstack); |
c906108c | 527 | |
c5aa993b | 528 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) |
2c63a960 | 529 | - first_dont_print; |
c906108c SS |
530 | |
531 | while (--j >= 0) | |
532 | if (baseclass == first_dont_print[j]) | |
533 | goto flush_it; | |
534 | ||
535 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
536 | } | |
537 | ||
b9d652ac DJ |
538 | thisoffset = offset; |
539 | thistype = real_type; | |
c906108c | 540 | if (TYPE_HAS_VTABLE (type) && BASETYPE_VIA_VIRTUAL (type, i)) |
c5aa993b JM |
541 | { |
542 | /* Assume HP/Taligent runtime convention */ | |
543 | find_rt_vbase_offset (type, TYPE_BASECLASS (type, i), | |
544 | valaddr, offset, &boffset, &skip); | |
545 | if (skip >= 0) | |
2c63a960 JB |
546 | error ("Virtual base class offset not found from vtable while" |
547 | " printing"); | |
c5aa993b JM |
548 | base_valaddr = valaddr; |
549 | } | |
c906108c | 550 | else |
c5aa993b | 551 | { |
2c63a960 JB |
552 | boffset = baseclass_offset (type, i, |
553 | valaddr + offset, | |
9e14d721 | 554 | address); |
c5aa993b | 555 | skip = ((boffset == -1) || (boffset + offset) < 0) ? 1 : -1; |
c906108c | 556 | |
c5aa993b JM |
557 | if (BASETYPE_VIA_VIRTUAL (type, i)) |
558 | { | |
2c63a960 JB |
559 | /* The virtual base class pointer might have been |
560 | clobbered by the user program. Make sure that it | |
561 | still points to a valid memory location. */ | |
c906108c | 562 | |
2c63a960 JB |
563 | if (boffset != -1 |
564 | && ((boffset + offset) < 0 | |
565 | || (boffset + offset) >= TYPE_LENGTH (type))) | |
c5aa993b | 566 | { |
34c0bd93 | 567 | /* FIXME (alloca): unsafe if baseclass is really really large. */ |
a2bd3dcd AC |
568 | bfd_byte *buf = alloca (TYPE_LENGTH (baseclass)); |
569 | base_valaddr = buf; | |
570 | if (target_read_memory (address + boffset, buf, | |
c5aa993b JM |
571 | TYPE_LENGTH (baseclass)) != 0) |
572 | skip = 1; | |
9e14d721 | 573 | address = address + boffset; |
b9d652ac DJ |
574 | thisoffset = 0; |
575 | boffset = 0; | |
576 | thistype = baseclass; | |
c5aa993b JM |
577 | } |
578 | else | |
579 | base_valaddr = valaddr; | |
580 | } | |
581 | else | |
582 | base_valaddr = valaddr; | |
c906108c SS |
583 | } |
584 | ||
585 | /* now do the printing */ | |
586 | if (pretty) | |
587 | { | |
588 | fprintf_filtered (stream, "\n"); | |
589 | print_spaces_filtered (2 * recurse, stream); | |
590 | } | |
591 | fputs_filtered ("<", stream); | |
592 | /* Not sure what the best notation is in the case where there is no | |
c5aa993b | 593 | baseclass name. */ |
c906108c SS |
594 | fputs_filtered (basename ? basename : "", stream); |
595 | fputs_filtered ("> = ", stream); | |
596 | ||
597 | ||
598 | if (skip >= 1) | |
599 | fprintf_filtered (stream, "<invalid address>"); | |
600 | else | |
b9d652ac | 601 | cp_print_value_fields (baseclass, thistype, base_valaddr, |
9e14d721 DJ |
602 | thisoffset + boffset, address + boffset, |
603 | stream, format, | |
2c63a960 JB |
604 | recurse, pretty, |
605 | ((struct type **) | |
606 | obstack_base (&dont_print_vb_obstack)), | |
c906108c SS |
607 | 0); |
608 | fputs_filtered (", ", stream); | |
609 | ||
610 | flush_it: | |
611 | ; | |
612 | } | |
613 | ||
614 | if (dont_print_vb == 0) | |
615 | { | |
616 | /* Free the space used to deal with the printing | |
c5aa993b | 617 | of this type from top level. */ |
c906108c SS |
618 | obstack_free (&dont_print_vb_obstack, last_dont_print); |
619 | /* Reset watermark so that we can continue protecting | |
c5aa993b | 620 | ourselves from whatever we were protecting ourselves. */ |
c906108c SS |
621 | dont_print_vb_obstack = tmp_obstack; |
622 | } | |
623 | } | |
624 | ||
625 | /* Print value of a static member. | |
626 | To avoid infinite recursion when printing a class that contains | |
627 | a static instance of the class, we keep the addresses of all printed | |
628 | static member classes in an obstack and refuse to print them more | |
629 | than once. | |
630 | ||
631 | VAL contains the value to print, TYPE, STREAM, RECURSE, and PRETTY | |
632 | have the same meanings as in c_val_print. */ | |
633 | ||
634 | static void | |
2c63a960 | 635 | cp_print_static_field (struct type *type, |
6943961c | 636 | struct value *val, |
2c63a960 JB |
637 | struct ui_file *stream, |
638 | int format, | |
639 | int recurse, | |
640 | enum val_prettyprint pretty) | |
c906108c SS |
641 | { |
642 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
643 | { | |
644 | CORE_ADDR *first_dont_print; | |
645 | int i; | |
646 | ||
647 | first_dont_print | |
c5aa993b JM |
648 | = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); |
649 | i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) | |
c906108c SS |
650 | - first_dont_print; |
651 | ||
652 | while (--i >= 0) | |
653 | { | |
654 | if (VALUE_ADDRESS (val) == first_dont_print[i]) | |
655 | { | |
2c63a960 JB |
656 | fputs_filtered ("<same as static member of an already" |
657 | " seen type>", | |
c906108c SS |
658 | stream); |
659 | return; | |
660 | } | |
661 | } | |
662 | ||
663 | obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val), | |
664 | sizeof (CORE_ADDR)); | |
665 | ||
666 | CHECK_TYPEDEF (type); | |
46615f07 | 667 | cp_print_value_fields (type, type, value_contents_all (val), |
2c63a960 | 668 | VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val), |
c906108c SS |
669 | stream, format, recurse, pretty, NULL, 1); |
670 | return; | |
671 | } | |
46615f07 | 672 | val_print (type, value_contents_all (val), |
2c63a960 | 673 | VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val), |
c906108c SS |
674 | stream, format, 0, recurse, pretty); |
675 | } | |
676 | ||
677 | void | |
9519ccd5 | 678 | cp_print_class_member (const bfd_byte *valaddr, struct type *domain, |
fba45db2 | 679 | struct ui_file *stream, char *prefix) |
c906108c | 680 | { |
c5aa993b | 681 | |
c906108c SS |
682 | /* VAL is a byte offset into the structure type DOMAIN. |
683 | Find the name of the field for that offset and | |
684 | print it. */ | |
685 | int extra = 0; | |
686 | int bits = 0; | |
52f0bd74 | 687 | unsigned int i; |
c906108c SS |
688 | unsigned len = TYPE_NFIELDS (domain); |
689 | ||
690 | /* @@ Make VAL into bit offset */ | |
691 | ||
692 | /* Note: HP aCC generates offsets that are the real byte offsets added | |
693 | to a constant bias 0x20000000 (1 << 29). This constant bias gets | |
694 | shifted out in the code below -- joyous happenstance! */ | |
695 | ||
696 | /* Note: HP cfront uses a constant bias of 1; if we support this | |
c5aa993b JM |
697 | compiler ever, we will have to adjust the computation below */ |
698 | ||
c906108c SS |
699 | LONGEST val = unpack_long (builtin_type_int, valaddr) << 3; |
700 | for (i = TYPE_N_BASECLASSES (domain); i < len; i++) | |
701 | { | |
702 | int bitpos = TYPE_FIELD_BITPOS (domain, i); | |
703 | QUIT; | |
704 | if (val == bitpos) | |
705 | break; | |
706 | if (val < bitpos && i != 0) | |
707 | { | |
708 | /* Somehow pointing into a field. */ | |
709 | i -= 1; | |
710 | extra = (val - TYPE_FIELD_BITPOS (domain, i)); | |
711 | if (extra & 0x7) | |
712 | bits = 1; | |
713 | else | |
714 | extra >>= 3; | |
715 | break; | |
716 | } | |
717 | } | |
718 | if (i < len) | |
719 | { | |
720 | char *name; | |
306d9ac5 | 721 | fputs_filtered (prefix, stream); |
c906108c SS |
722 | name = type_name_no_tag (domain); |
723 | if (name) | |
c5aa993b | 724 | fputs_filtered (name, stream); |
c906108c SS |
725 | else |
726 | c_type_print_base (domain, stream, 0, 0); | |
727 | fprintf_filtered (stream, "::"); | |
728 | fputs_filtered (TYPE_FIELD_NAME (domain, i), stream); | |
729 | if (extra) | |
730 | fprintf_filtered (stream, " + %d bytes", extra); | |
731 | if (bits) | |
732 | fprintf_filtered (stream, " (offset in bits)"); | |
733 | } | |
734 | else | |
d4f3574e | 735 | fprintf_filtered (stream, "%ld", (long) (val >> 3)); |
c906108c SS |
736 | } |
737 | ||
738 | ||
739 | /* This function prints out virtual table entries for a class; it | |
740 | * recurses on the base classes to find all virtual functions | |
741 | * available in a class. | |
742 | * | |
743 | * pai/1997-05-21 Note: As the name suggests, it's currently | |
744 | * implemented for HP aCC runtime only. g++ objects are handled | |
745 | * differently and I have made no attempt to fold that logic in | |
746 | * here. The runtime layout is different for the two cases. Also, | |
747 | * this currently has only the code for non-RRBC layouts generated by | |
748 | * the HP aCC compiler; RRBC code is stubbed out and will have to be | |
749 | * added later. */ | |
c5aa993b | 750 | |
c906108c SS |
751 | |
752 | static void | |
fba45db2 | 753 | cp_print_hpacc_virtual_table_entries (struct type *type, int *vfuncs, |
6943961c | 754 | struct value *v, struct ui_file *stream, |
fba45db2 KB |
755 | int format, 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 | 766 | if (pbc) |
2c63a960 JB |
767 | cp_print_hpacc_virtual_table_entries (pbc, vfuncs, v, stream, format, |
768 | recurse, pretty); | |
c5aa993b | 769 | |
c906108c SS |
770 | /* Now deal with vfuncs declared in this class */ |
771 | for (fn = 0; fn < TYPE_NFN_FIELDS (type); fn++) | |
772 | for (oi = 0; oi < TYPE_FN_FIELDLIST_LENGTH (type, fn); oi++) | |
773 | if (TYPE_FN_FIELD_VIRTUAL_P (TYPE_FN_FIELDLIST1 (type, fn), oi)) | |
c5aa993b JM |
774 | { |
775 | char *vf_name; | |
2c63a960 | 776 | const char *field_physname; |
c5aa993b JM |
777 | |
778 | /* virtual function offset */ | |
2c63a960 JB |
779 | int vx = (TYPE_FN_FIELD_VOFFSET (TYPE_FN_FIELDLIST1 (type, fn), oi) |
780 | - 1); | |
c5aa993b JM |
781 | |
782 | /* Get the address of the vfunction entry */ | |
6943961c | 783 | struct value *vf = value_copy (v); |
d69fe07e | 784 | if (value_lazy (vf)) |
c5aa993b | 785 | (void) value_fetch_lazy (vf); |
2c63a960 JB |
786 | /* adjust by offset */ |
787 | vf->aligner.contents[0] += 4 * (HP_ACC_VFUNC_START + vx); | |
c5aa993b | 788 | vf = value_ind (vf); /* get the entry */ |
df407dfe | 789 | vf->type = value_type (v); /* make it a pointer */ |
c5aa993b JM |
790 | |
791 | /* print out the entry */ | |
0fd88904 | 792 | val_print (value_type (vf), value_contents (vf), 0, 0, |
c5aa993b | 793 | stream, format, 0, recurse + 1, pretty); |
2c63a960 JB |
794 | field_physname |
795 | = TYPE_FN_FIELD_PHYSNAME (TYPE_FN_FIELDLIST1 (type, fn), oi); | |
796 | /* pai: (temp) FIXME Maybe this should be DMGL_ANSI */ | |
797 | vf_name = cplus_demangle (field_physname, DMGL_ARM); | |
c5aa993b JM |
798 | fprintf_filtered (stream, " %s", vf_name); |
799 | if (--(*vfuncs) > 0) | |
800 | fputs_filtered (", ", stream); | |
801 | } | |
c906108c SS |
802 | } |
803 | ||
804 | ||
805 | ||
806 | void | |
fba45db2 | 807 | _initialize_cp_valprint (void) |
c906108c | 808 | { |
cb1a6d5f | 809 | deprecated_add_show_from_set |
c906108c | 810 | (add_set_cmd ("static-members", class_support, var_boolean, |
c5aa993b | 811 | (char *) &static_field_print, |
c906108c SS |
812 | "Set printing of C++ static members.", |
813 | &setprintlist), | |
814 | &showprintlist); | |
815 | /* Turn on printing of static fields. */ | |
816 | static_field_print = 1; | |
817 | ||
cb1a6d5f | 818 | deprecated_add_show_from_set |
c5aa993b | 819 | (add_set_cmd ("vtbl", class_support, var_boolean, (char *) &vtblprint, |
c906108c SS |
820 | "Set printing of C++ virtual function tables.", |
821 | &setprintlist), | |
822 | &showprintlist); | |
823 | ||
cb1a6d5f | 824 | deprecated_add_show_from_set |
c5aa993b JM |
825 | (add_set_cmd ("object", class_support, var_boolean, (char *) &objectprint, |
826 | "Set printing of object's derived type based on vtable info.", | |
c906108c SS |
827 | &setprintlist), |
828 | &showprintlist); | |
829 | ||
830 | /* Give people the defaults which they are used to. */ | |
831 | objectprint = 0; | |
832 | vtblprint = 0; | |
833 | obstack_begin (&dont_print_vb_obstack, 32 * sizeof (struct type *)); | |
834 | obstack_specify_allocation (&dont_print_statmem_obstack, | |
835 | 32 * sizeof (CORE_ADDR), sizeof (CORE_ADDR), | |
b8c9b27d | 836 | xmalloc, xfree); |
c906108c | 837 | } |