Commit | Line | Data |
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015a42b4 | 1 | /* Generic code for supporting multiple C++ ABI's |
06c4d4dc | 2 | |
ecd75fc8 | 3 | Copyright (C) 2001-2014 Free Software Foundation, Inc. |
015a42b4 JB |
4 | |
5 | This file is part of GDB. | |
6 | ||
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
015a42b4 JB |
10 | (at your option) any later version. |
11 | ||
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. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
015a42b4 JB |
19 | |
20 | #include "defs.h" | |
21 | #include "value.h" | |
22 | #include "cp-abi.h" | |
fe1f4a5e | 23 | #include "command.h" |
7093c834 | 24 | #include "exceptions.h" |
fe1f4a5e DJ |
25 | #include "gdbcmd.h" |
26 | #include "ui-out.h" | |
fe1f4a5e | 27 | static struct cp_abi_ops *find_cp_abi (const char *short_name); |
015a42b4 | 28 | |
fe1f4a5e DJ |
29 | static struct cp_abi_ops current_cp_abi = { "", NULL }; |
30 | static struct cp_abi_ops auto_cp_abi = { "auto", NULL }; | |
015a42b4 | 31 | |
fe1f4a5e DJ |
32 | #define CP_ABI_MAX 8 |
33 | static struct cp_abi_ops *cp_abis[CP_ABI_MAX]; | |
34 | static int num_cp_abis = 0; | |
015a42b4 JB |
35 | |
36 | enum ctor_kinds | |
37 | is_constructor_name (const char *name) | |
38 | { | |
39 | if ((current_cp_abi.is_constructor_name) == NULL) | |
8a3fe4f8 | 40 | error (_("ABI doesn't define required function is_constructor_name")); |
015a42b4 JB |
41 | return (*current_cp_abi.is_constructor_name) (name); |
42 | } | |
43 | ||
44 | enum dtor_kinds | |
45 | is_destructor_name (const char *name) | |
46 | { | |
47 | if ((current_cp_abi.is_destructor_name) == NULL) | |
8a3fe4f8 | 48 | error (_("ABI doesn't define required function is_destructor_name")); |
015a42b4 JB |
49 | return (*current_cp_abi.is_destructor_name) (name); |
50 | } | |
51 | ||
52 | int | |
53 | is_vtable_name (const char *name) | |
54 | { | |
55 | if ((current_cp_abi.is_vtable_name) == NULL) | |
8a3fe4f8 | 56 | error (_("ABI doesn't define required function is_vtable_name")); |
015a42b4 JB |
57 | return (*current_cp_abi.is_vtable_name) (name); |
58 | } | |
59 | ||
60 | int | |
61 | is_operator_name (const char *name) | |
62 | { | |
63 | if ((current_cp_abi.is_operator_name) == NULL) | |
8a3fe4f8 | 64 | error (_("ABI doesn't define required function is_operator_name")); |
015a42b4 JB |
65 | return (*current_cp_abi.is_operator_name) (name); |
66 | } | |
67 | ||
1514d34e | 68 | int |
8af8e3bc PA |
69 | baseclass_offset (struct type *type, int index, const gdb_byte *valaddr, |
70 | int embedded_offset, CORE_ADDR address, | |
71 | const struct value *val) | |
1514d34e | 72 | { |
8af8e3bc PA |
73 | volatile struct gdb_exception ex; |
74 | int res = 0; | |
75 | ||
76 | gdb_assert (current_cp_abi.baseclass_offset != NULL); | |
77 | ||
78 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
79 | { | |
80 | res = (*current_cp_abi.baseclass_offset) (type, index, valaddr, | |
81 | embedded_offset, | |
82 | address, val); | |
83 | } | |
84 | ||
85 | if (ex.reason < 0 && ex.error == NOT_AVAILABLE_ERROR) | |
86 | throw_error (NOT_AVAILABLE_ERROR, | |
87 | _("Cannot determine virtual baseclass offset " | |
88 | "of incomplete object")); | |
89 | else if (ex.reason < 0) | |
90 | throw_exception (ex); | |
91 | else | |
92 | return res; | |
1514d34e DJ |
93 | } |
94 | ||
e933e538 | 95 | struct value * |
aff410f1 MS |
96 | value_virtual_fn_field (struct value **arg1p, |
97 | struct fn_field *f, int j, | |
fe1f4a5e | 98 | struct type *type, int offset) |
015a42b4 JB |
99 | { |
100 | if ((current_cp_abi.virtual_fn_field) == NULL) | |
101 | return NULL; | |
aff410f1 MS |
102 | return (*current_cp_abi.virtual_fn_field) (arg1p, f, j, |
103 | type, offset); | |
015a42b4 | 104 | } |
1514d34e | 105 | |
015a42b4 | 106 | struct type * |
aff410f1 MS |
107 | value_rtti_type (struct value *v, int *full, |
108 | int *top, int *using_enc) | |
015a42b4 | 109 | { |
7093c834 | 110 | struct type *ret = NULL; |
bfd189b1 | 111 | volatile struct gdb_exception e; |
c5504eaf | 112 | |
015a42b4 JB |
113 | if ((current_cp_abi.rtti_type) == NULL) |
114 | return NULL; | |
7093c834 PP |
115 | TRY_CATCH (e, RETURN_MASK_ERROR) |
116 | { | |
117 | ret = (*current_cp_abi.rtti_type) (v, full, top, using_enc); | |
118 | } | |
119 | if (e.reason < 0) | |
120 | return NULL; | |
121 | return ret; | |
015a42b4 JB |
122 | } |
123 | ||
0d5de010 | 124 | void |
aff410f1 MS |
125 | cplus_print_method_ptr (const gdb_byte *contents, |
126 | struct type *type, | |
0d5de010 DJ |
127 | struct ui_file *stream) |
128 | { | |
129 | if (current_cp_abi.print_method_ptr == NULL) | |
130 | error (_("GDB does not support pointers to methods on this target")); | |
131 | (*current_cp_abi.print_method_ptr) (contents, type, stream); | |
132 | } | |
133 | ||
134 | int | |
ad4820ab | 135 | cplus_method_ptr_size (struct type *to_type) |
0d5de010 DJ |
136 | { |
137 | if (current_cp_abi.method_ptr_size == NULL) | |
138 | error (_("GDB does not support pointers to methods on this target")); | |
ad4820ab | 139 | return (*current_cp_abi.method_ptr_size) (to_type); |
0d5de010 DJ |
140 | } |
141 | ||
142 | void | |
ad4820ab UW |
143 | cplus_make_method_ptr (struct type *type, gdb_byte *contents, |
144 | CORE_ADDR value, int is_virtual) | |
0d5de010 DJ |
145 | { |
146 | if (current_cp_abi.make_method_ptr == NULL) | |
147 | error (_("GDB does not support pointers to methods on this target")); | |
ad4820ab | 148 | (*current_cp_abi.make_method_ptr) (type, contents, value, is_virtual); |
0d5de010 DJ |
149 | } |
150 | ||
b18be20d | 151 | CORE_ADDR |
aff410f1 MS |
152 | cplus_skip_trampoline (struct frame_info *frame, |
153 | CORE_ADDR stop_pc) | |
b18be20d DJ |
154 | { |
155 | if (current_cp_abi.skip_trampoline == NULL) | |
156 | return 0; | |
52f729a7 | 157 | return (*current_cp_abi.skip_trampoline) (frame, stop_pc); |
b18be20d DJ |
158 | } |
159 | ||
0d5de010 | 160 | struct value * |
aff410f1 MS |
161 | cplus_method_ptr_to_value (struct value **this_p, |
162 | struct value *method_ptr) | |
0d5de010 DJ |
163 | { |
164 | if (current_cp_abi.method_ptr_to_value == NULL) | |
165 | error (_("GDB does not support pointers to methods on this target")); | |
166 | return (*current_cp_abi.method_ptr_to_value) (this_p, method_ptr); | |
167 | } | |
168 | ||
c4aeac85 TT |
169 | /* See cp-abi.h. */ |
170 | ||
171 | void | |
172 | cplus_print_vtable (struct value *value) | |
173 | { | |
174 | if (current_cp_abi.print_vtable == NULL) | |
175 | error (_("GDB cannot print the vtable on this target")); | |
843e694d | 176 | (*current_cp_abi.print_vtable) (value); |
c4aeac85 TT |
177 | } |
178 | ||
6e72ca20 TT |
179 | /* See cp-abi.h. */ |
180 | ||
181 | struct value * | |
182 | cplus_typeid (struct value *value) | |
183 | { | |
184 | if (current_cp_abi.get_typeid == NULL) | |
185 | error (_("GDB cannot find the typeid on this target")); | |
186 | return (*current_cp_abi.get_typeid) (value); | |
187 | } | |
188 | ||
189 | /* See cp-abi.h. */ | |
190 | ||
191 | struct type * | |
192 | cplus_typeid_type (struct gdbarch *gdbarch) | |
193 | { | |
194 | if (current_cp_abi.get_typeid_type == NULL) | |
195 | error (_("GDB cannot find the type for 'typeid' on this target")); | |
196 | return (*current_cp_abi.get_typeid_type) (gdbarch); | |
197 | } | |
198 | ||
72f1fe8a TT |
199 | /* See cp-abi.h. */ |
200 | ||
201 | struct type * | |
202 | cplus_type_from_type_info (struct value *value) | |
203 | { | |
204 | if (current_cp_abi.get_type_from_type_info == NULL) | |
205 | error (_("GDB cannot find the type from a std::type_info on this target")); | |
206 | return (*current_cp_abi.get_type_from_type_info) (value); | |
207 | } | |
208 | ||
cc16e6c9 TT |
209 | /* See cp-abi.h. */ |
210 | ||
211 | char * | |
212 | cplus_typename_from_type_info (struct value *value) | |
213 | { | |
214 | if (current_cp_abi.get_typename_from_type_info == NULL) | |
215 | error (_("GDB cannot find the type name " | |
216 | "from a std::type_info on this target")); | |
217 | return (*current_cp_abi.get_typename_from_type_info) (value); | |
218 | } | |
219 | ||
41f1b697 DJ |
220 | int |
221 | cp_pass_by_reference (struct type *type) | |
222 | { | |
223 | if ((current_cp_abi.pass_by_reference) == NULL) | |
224 | return 0; | |
225 | return (*current_cp_abi.pass_by_reference) (type); | |
226 | } | |
227 | ||
fe1f4a5e DJ |
228 | /* Set the current C++ ABI to SHORT_NAME. */ |
229 | ||
230 | static int | |
231 | switch_to_cp_abi (const char *short_name) | |
232 | { | |
233 | struct cp_abi_ops *abi; | |
234 | ||
235 | abi = find_cp_abi (short_name); | |
236 | if (abi == NULL) | |
237 | return 0; | |
238 | ||
239 | current_cp_abi = *abi; | |
240 | return 1; | |
241 | } | |
242 | ||
243 | /* Add ABI to the list of supported C++ ABI's. */ | |
244 | ||
015a42b4 | 245 | int |
fe1f4a5e | 246 | register_cp_abi (struct cp_abi_ops *abi) |
015a42b4 | 247 | { |
fe1f4a5e DJ |
248 | if (num_cp_abis == CP_ABI_MAX) |
249 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
250 | _("Too many C++ ABIs, please increase " |
251 | "CP_ABI_MAX in cp-abi.c")); | |
fe1f4a5e | 252 | |
015a42b4 JB |
253 | cp_abis[num_cp_abis++] = abi; |
254 | ||
255 | return 1; | |
fe1f4a5e DJ |
256 | } |
257 | ||
258 | /* Set the ABI to use in "auto" mode to SHORT_NAME. */ | |
015a42b4 | 259 | |
fe1f4a5e DJ |
260 | void |
261 | set_cp_abi_as_auto_default (const char *short_name) | |
262 | { | |
263 | char *new_longname, *new_doc; | |
264 | struct cp_abi_ops *abi = find_cp_abi (short_name); | |
265 | ||
266 | if (abi == NULL) | |
267 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 268 | _("Cannot find C++ ABI \"%s\" to set it as auto default."), |
fe1f4a5e DJ |
269 | short_name); |
270 | ||
271 | if (auto_cp_abi.longname != NULL) | |
272 | xfree ((char *) auto_cp_abi.longname); | |
273 | if (auto_cp_abi.doc != NULL) | |
274 | xfree ((char *) auto_cp_abi.doc); | |
275 | ||
276 | auto_cp_abi = *abi; | |
277 | ||
278 | auto_cp_abi.shortname = "auto"; | |
0dfdb8ba | 279 | new_longname = xstrprintf ("currently \"%s\"", abi->shortname); |
fe1f4a5e DJ |
280 | auto_cp_abi.longname = new_longname; |
281 | ||
0dfdb8ba | 282 | new_doc = xstrprintf ("Automatically selected; currently \"%s\"", |
049742da | 283 | abi->shortname); |
fe1f4a5e DJ |
284 | auto_cp_abi.doc = new_doc; |
285 | ||
286 | /* Since we copy the current ABI into current_cp_abi instead of | |
287 | using a pointer, if auto is currently the default, we need to | |
288 | reset it. */ | |
289 | if (strcmp (current_cp_abi.shortname, "auto") == 0) | |
290 | switch_to_cp_abi ("auto"); | |
015a42b4 JB |
291 | } |
292 | ||
fe1f4a5e DJ |
293 | /* Return the ABI operations associated with SHORT_NAME. */ |
294 | ||
295 | static struct cp_abi_ops * | |
296 | find_cp_abi (const char *short_name) | |
015a42b4 JB |
297 | { |
298 | int i; | |
fe1f4a5e | 299 | |
015a42b4 | 300 | for (i = 0; i < num_cp_abis; i++) |
fe1f4a5e DJ |
301 | if (strcmp (cp_abis[i]->shortname, short_name) == 0) |
302 | return cp_abis[i]; | |
303 | ||
304 | return NULL; | |
015a42b4 JB |
305 | } |
306 | ||
fe1f4a5e DJ |
307 | /* Display the list of registered C++ ABIs. */ |
308 | ||
309 | static void | |
310 | list_cp_abis (int from_tty) | |
311 | { | |
79a45e25 | 312 | struct ui_out *uiout = current_uiout; |
fe1f4a5e DJ |
313 | struct cleanup *cleanup_chain; |
314 | int i; | |
fe1f4a5e | 315 | |
c5504eaf | 316 | ui_out_text (uiout, "The available C++ ABIs are:\n"); |
aff410f1 MS |
317 | cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, |
318 | "cp-abi-list"); | |
fe1f4a5e DJ |
319 | for (i = 0; i < num_cp_abis; i++) |
320 | { | |
321 | char pad[14]; | |
322 | int padcount; | |
323 | ||
324 | ui_out_text (uiout, " "); | |
325 | ui_out_field_string (uiout, "cp-abi", cp_abis[i]->shortname); | |
326 | ||
327 | padcount = 16 - 2 - strlen (cp_abis[i]->shortname); | |
328 | pad[padcount] = 0; | |
329 | while (padcount > 0) | |
330 | pad[--padcount] = ' '; | |
331 | ui_out_text (uiout, pad); | |
332 | ||
333 | ui_out_field_string (uiout, "doc", cp_abis[i]->doc); | |
334 | ui_out_text (uiout, "\n"); | |
335 | } | |
336 | do_cleanups (cleanup_chain); | |
337 | } | |
338 | ||
339 | /* Set the current C++ ABI, or display the list of options if no | |
340 | argument is given. */ | |
341 | ||
342 | static void | |
343 | set_cp_abi_cmd (char *args, int from_tty) | |
344 | { | |
345 | if (args == NULL) | |
346 | { | |
347 | list_cp_abis (from_tty); | |
348 | return; | |
349 | } | |
350 | ||
351 | if (!switch_to_cp_abi (args)) | |
8a3fe4f8 | 352 | error (_("Could not find \"%s\" in ABI list"), args); |
fe1f4a5e DJ |
353 | } |
354 | ||
db2b2972 TT |
355 | /* A completion function for "set cp-abi". */ |
356 | ||
357 | static VEC (char_ptr) * | |
358 | cp_abi_completer (struct cmd_list_element *ignore, | |
6f937416 | 359 | const char *text, const char *word) |
db2b2972 TT |
360 | { |
361 | static const char **cp_abi_names; | |
362 | ||
363 | if (cp_abi_names == NULL) | |
364 | { | |
365 | int i; | |
366 | ||
367 | cp_abi_names = XNEWVEC (const char *, num_cp_abis + 1); | |
368 | for (i = 0; i < num_cp_abis; ++i) | |
369 | cp_abi_names[i] = cp_abis[i]->shortname; | |
6108433d | 370 | cp_abi_names[i] = NULL; |
db2b2972 TT |
371 | } |
372 | ||
373 | return complete_on_enum (cp_abi_names, text, word); | |
374 | } | |
375 | ||
fe1f4a5e DJ |
376 | /* Show the currently selected C++ ABI. */ |
377 | ||
378 | static void | |
379 | show_cp_abi_cmd (char *args, int from_tty) | |
380 | { | |
79a45e25 PA |
381 | struct ui_out *uiout = current_uiout; |
382 | ||
fe1f4a5e DJ |
383 | ui_out_text (uiout, "The currently selected C++ ABI is \""); |
384 | ||
385 | ui_out_field_string (uiout, "cp-abi", current_cp_abi.shortname); | |
386 | ui_out_text (uiout, "\" ("); | |
387 | ui_out_field_string (uiout, "longname", current_cp_abi.longname); | |
388 | ui_out_text (uiout, ").\n"); | |
389 | } | |
390 | ||
b9362cc7 AC |
391 | extern initialize_file_ftype _initialize_cp_abi; /* -Wmissing-prototypes */ |
392 | ||
fe1f4a5e DJ |
393 | void |
394 | _initialize_cp_abi (void) | |
395 | { | |
db2b2972 TT |
396 | struct cmd_list_element *c; |
397 | ||
fe1f4a5e DJ |
398 | register_cp_abi (&auto_cp_abi); |
399 | switch_to_cp_abi ("auto"); | |
400 | ||
db2b2972 | 401 | c = add_cmd ("cp-abi", class_obscure, set_cp_abi_cmd, _("\ |
ac74f770 MS |
402 | Set the ABI used for inspecting C++ objects.\n\ |
403 | \"set cp-abi\" with no arguments will list the available ABIs."), | |
db2b2972 TT |
404 | &setlist); |
405 | set_cmd_completer (c, cp_abi_completer); | |
fe1f4a5e DJ |
406 | |
407 | add_cmd ("cp-abi", class_obscure, show_cp_abi_cmd, | |
aff410f1 MS |
408 | _("Show the ABI used for inspecting C++ objects."), |
409 | &showlist); | |
fe1f4a5e | 410 | } |