Commit | Line | Data |
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015a42b4 | 1 | /* Generic code for supporting multiple C++ ABI's |
06c4d4dc | 2 | |
4c38e0a4 | 3 | Copyright (C) 2001, 2002, 2003, 2005, 2006, 2007, 2008, 2009, 2010 |
6aba47ca | 4 | Free Software Foundation, Inc. |
015a42b4 JB |
5 | |
6 | This file is part of GDB. | |
7 | ||
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 | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
015a42b4 JB |
11 | (at your option) any later version. |
12 | ||
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. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
015a42b4 JB |
20 | |
21 | #include "defs.h" | |
22 | #include "value.h" | |
23 | #include "cp-abi.h" | |
fe1f4a5e | 24 | #include "command.h" |
7093c834 | 25 | #include "exceptions.h" |
fe1f4a5e DJ |
26 | #include "gdbcmd.h" |
27 | #include "ui-out.h" | |
28 | ||
309367d4 | 29 | #include "gdb_string.h" |
015a42b4 | 30 | |
fe1f4a5e | 31 | static struct cp_abi_ops *find_cp_abi (const char *short_name); |
015a42b4 | 32 | |
fe1f4a5e DJ |
33 | static struct cp_abi_ops current_cp_abi = { "", NULL }; |
34 | static struct cp_abi_ops auto_cp_abi = { "auto", NULL }; | |
015a42b4 | 35 | |
fe1f4a5e DJ |
36 | #define CP_ABI_MAX 8 |
37 | static struct cp_abi_ops *cp_abis[CP_ABI_MAX]; | |
38 | static int num_cp_abis = 0; | |
015a42b4 JB |
39 | |
40 | enum ctor_kinds | |
41 | is_constructor_name (const char *name) | |
42 | { | |
43 | if ((current_cp_abi.is_constructor_name) == NULL) | |
8a3fe4f8 | 44 | error (_("ABI doesn't define required function is_constructor_name")); |
015a42b4 JB |
45 | return (*current_cp_abi.is_constructor_name) (name); |
46 | } | |
47 | ||
48 | enum dtor_kinds | |
49 | is_destructor_name (const char *name) | |
50 | { | |
51 | if ((current_cp_abi.is_destructor_name) == NULL) | |
8a3fe4f8 | 52 | error (_("ABI doesn't define required function is_destructor_name")); |
015a42b4 JB |
53 | return (*current_cp_abi.is_destructor_name) (name); |
54 | } | |
55 | ||
56 | int | |
57 | is_vtable_name (const char *name) | |
58 | { | |
59 | if ((current_cp_abi.is_vtable_name) == NULL) | |
8a3fe4f8 | 60 | error (_("ABI doesn't define required function is_vtable_name")); |
015a42b4 JB |
61 | return (*current_cp_abi.is_vtable_name) (name); |
62 | } | |
63 | ||
64 | int | |
65 | is_operator_name (const char *name) | |
66 | { | |
67 | if ((current_cp_abi.is_operator_name) == NULL) | |
8a3fe4f8 | 68 | error (_("ABI doesn't define required function is_operator_name")); |
015a42b4 JB |
69 | return (*current_cp_abi.is_operator_name) (name); |
70 | } | |
71 | ||
1514d34e | 72 | int |
aff410f1 MS |
73 | baseclass_offset (struct type *type, int index, |
74 | const bfd_byte *valaddr, | |
1514d34e DJ |
75 | CORE_ADDR address) |
76 | { | |
77 | if (current_cp_abi.baseclass_offset == NULL) | |
8a3fe4f8 | 78 | error (_("ABI doesn't define required function baseclass_offset")); |
aff410f1 MS |
79 | return (*current_cp_abi.baseclass_offset) (type, index, |
80 | valaddr, address); | |
1514d34e DJ |
81 | } |
82 | ||
e933e538 | 83 | struct value * |
aff410f1 MS |
84 | value_virtual_fn_field (struct value **arg1p, |
85 | struct fn_field *f, int j, | |
fe1f4a5e | 86 | struct type *type, int offset) |
015a42b4 JB |
87 | { |
88 | if ((current_cp_abi.virtual_fn_field) == NULL) | |
89 | return NULL; | |
aff410f1 MS |
90 | return (*current_cp_abi.virtual_fn_field) (arg1p, f, j, |
91 | type, offset); | |
015a42b4 | 92 | } |
1514d34e | 93 | |
015a42b4 | 94 | struct type * |
aff410f1 MS |
95 | value_rtti_type (struct value *v, int *full, |
96 | int *top, int *using_enc) | |
015a42b4 | 97 | { |
7093c834 PP |
98 | struct type *ret = NULL; |
99 | struct gdb_exception e; | |
c5504eaf | 100 | |
015a42b4 JB |
101 | if ((current_cp_abi.rtti_type) == NULL) |
102 | return NULL; | |
7093c834 PP |
103 | TRY_CATCH (e, RETURN_MASK_ERROR) |
104 | { | |
105 | ret = (*current_cp_abi.rtti_type) (v, full, top, using_enc); | |
106 | } | |
107 | if (e.reason < 0) | |
108 | return NULL; | |
109 | return ret; | |
015a42b4 JB |
110 | } |
111 | ||
0d5de010 | 112 | void |
aff410f1 MS |
113 | cplus_print_method_ptr (const gdb_byte *contents, |
114 | struct type *type, | |
0d5de010 DJ |
115 | struct ui_file *stream) |
116 | { | |
117 | if (current_cp_abi.print_method_ptr == NULL) | |
118 | error (_("GDB does not support pointers to methods on this target")); | |
119 | (*current_cp_abi.print_method_ptr) (contents, type, stream); | |
120 | } | |
121 | ||
122 | int | |
ad4820ab | 123 | cplus_method_ptr_size (struct type *to_type) |
0d5de010 DJ |
124 | { |
125 | if (current_cp_abi.method_ptr_size == NULL) | |
126 | error (_("GDB does not support pointers to methods on this target")); | |
ad4820ab | 127 | return (*current_cp_abi.method_ptr_size) (to_type); |
0d5de010 DJ |
128 | } |
129 | ||
130 | void | |
ad4820ab UW |
131 | cplus_make_method_ptr (struct type *type, gdb_byte *contents, |
132 | CORE_ADDR value, int is_virtual) | |
0d5de010 DJ |
133 | { |
134 | if (current_cp_abi.make_method_ptr == NULL) | |
135 | error (_("GDB does not support pointers to methods on this target")); | |
ad4820ab | 136 | (*current_cp_abi.make_method_ptr) (type, contents, value, is_virtual); |
0d5de010 DJ |
137 | } |
138 | ||
b18be20d | 139 | CORE_ADDR |
aff410f1 MS |
140 | cplus_skip_trampoline (struct frame_info *frame, |
141 | CORE_ADDR stop_pc) | |
b18be20d DJ |
142 | { |
143 | if (current_cp_abi.skip_trampoline == NULL) | |
144 | return 0; | |
52f729a7 | 145 | return (*current_cp_abi.skip_trampoline) (frame, stop_pc); |
b18be20d DJ |
146 | } |
147 | ||
0d5de010 | 148 | struct value * |
aff410f1 MS |
149 | cplus_method_ptr_to_value (struct value **this_p, |
150 | struct value *method_ptr) | |
0d5de010 DJ |
151 | { |
152 | if (current_cp_abi.method_ptr_to_value == NULL) | |
153 | error (_("GDB does not support pointers to methods on this target")); | |
154 | return (*current_cp_abi.method_ptr_to_value) (this_p, method_ptr); | |
155 | } | |
156 | ||
41f1b697 DJ |
157 | int |
158 | cp_pass_by_reference (struct type *type) | |
159 | { | |
160 | if ((current_cp_abi.pass_by_reference) == NULL) | |
161 | return 0; | |
162 | return (*current_cp_abi.pass_by_reference) (type); | |
163 | } | |
164 | ||
fe1f4a5e DJ |
165 | /* Set the current C++ ABI to SHORT_NAME. */ |
166 | ||
167 | static int | |
168 | switch_to_cp_abi (const char *short_name) | |
169 | { | |
170 | struct cp_abi_ops *abi; | |
171 | ||
172 | abi = find_cp_abi (short_name); | |
173 | if (abi == NULL) | |
174 | return 0; | |
175 | ||
176 | current_cp_abi = *abi; | |
177 | return 1; | |
178 | } | |
179 | ||
180 | /* Add ABI to the list of supported C++ ABI's. */ | |
181 | ||
015a42b4 | 182 | int |
fe1f4a5e | 183 | register_cp_abi (struct cp_abi_ops *abi) |
015a42b4 | 184 | { |
fe1f4a5e DJ |
185 | if (num_cp_abis == CP_ABI_MAX) |
186 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 187 | _("Too many C++ ABIs, please increase CP_ABI_MAX in cp-abi.c")); |
fe1f4a5e | 188 | |
015a42b4 JB |
189 | cp_abis[num_cp_abis++] = abi; |
190 | ||
191 | return 1; | |
fe1f4a5e DJ |
192 | } |
193 | ||
194 | /* Set the ABI to use in "auto" mode to SHORT_NAME. */ | |
015a42b4 | 195 | |
fe1f4a5e DJ |
196 | void |
197 | set_cp_abi_as_auto_default (const char *short_name) | |
198 | { | |
199 | char *new_longname, *new_doc; | |
200 | struct cp_abi_ops *abi = find_cp_abi (short_name); | |
201 | ||
202 | if (abi == NULL) | |
203 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 204 | _("Cannot find C++ ABI \"%s\" to set it as auto default."), |
fe1f4a5e DJ |
205 | short_name); |
206 | ||
207 | if (auto_cp_abi.longname != NULL) | |
208 | xfree ((char *) auto_cp_abi.longname); | |
209 | if (auto_cp_abi.doc != NULL) | |
210 | xfree ((char *) auto_cp_abi.doc); | |
211 | ||
212 | auto_cp_abi = *abi; | |
213 | ||
214 | auto_cp_abi.shortname = "auto"; | |
0dfdb8ba | 215 | new_longname = xstrprintf ("currently \"%s\"", abi->shortname); |
fe1f4a5e DJ |
216 | auto_cp_abi.longname = new_longname; |
217 | ||
0dfdb8ba | 218 | new_doc = xstrprintf ("Automatically selected; currently \"%s\"", |
049742da | 219 | abi->shortname); |
fe1f4a5e DJ |
220 | auto_cp_abi.doc = new_doc; |
221 | ||
222 | /* Since we copy the current ABI into current_cp_abi instead of | |
223 | using a pointer, if auto is currently the default, we need to | |
224 | reset it. */ | |
225 | if (strcmp (current_cp_abi.shortname, "auto") == 0) | |
226 | switch_to_cp_abi ("auto"); | |
015a42b4 JB |
227 | } |
228 | ||
fe1f4a5e DJ |
229 | /* Return the ABI operations associated with SHORT_NAME. */ |
230 | ||
231 | static struct cp_abi_ops * | |
232 | find_cp_abi (const char *short_name) | |
015a42b4 JB |
233 | { |
234 | int i; | |
fe1f4a5e | 235 | |
015a42b4 | 236 | for (i = 0; i < num_cp_abis; i++) |
fe1f4a5e DJ |
237 | if (strcmp (cp_abis[i]->shortname, short_name) == 0) |
238 | return cp_abis[i]; | |
239 | ||
240 | return NULL; | |
015a42b4 JB |
241 | } |
242 | ||
fe1f4a5e DJ |
243 | /* Display the list of registered C++ ABIs. */ |
244 | ||
245 | static void | |
246 | list_cp_abis (int from_tty) | |
247 | { | |
248 | struct cleanup *cleanup_chain; | |
249 | int i; | |
fe1f4a5e | 250 | |
c5504eaf | 251 | ui_out_text (uiout, "The available C++ ABIs are:\n"); |
aff410f1 MS |
252 | cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, |
253 | "cp-abi-list"); | |
fe1f4a5e DJ |
254 | for (i = 0; i < num_cp_abis; i++) |
255 | { | |
256 | char pad[14]; | |
257 | int padcount; | |
258 | ||
259 | ui_out_text (uiout, " "); | |
260 | ui_out_field_string (uiout, "cp-abi", cp_abis[i]->shortname); | |
261 | ||
262 | padcount = 16 - 2 - strlen (cp_abis[i]->shortname); | |
263 | pad[padcount] = 0; | |
264 | while (padcount > 0) | |
265 | pad[--padcount] = ' '; | |
266 | ui_out_text (uiout, pad); | |
267 | ||
268 | ui_out_field_string (uiout, "doc", cp_abis[i]->doc); | |
269 | ui_out_text (uiout, "\n"); | |
270 | } | |
271 | do_cleanups (cleanup_chain); | |
272 | } | |
273 | ||
274 | /* Set the current C++ ABI, or display the list of options if no | |
275 | argument is given. */ | |
276 | ||
277 | static void | |
278 | set_cp_abi_cmd (char *args, int from_tty) | |
279 | { | |
280 | if (args == NULL) | |
281 | { | |
282 | list_cp_abis (from_tty); | |
283 | return; | |
284 | } | |
285 | ||
286 | if (!switch_to_cp_abi (args)) | |
8a3fe4f8 | 287 | error (_("Could not find \"%s\" in ABI list"), args); |
fe1f4a5e DJ |
288 | } |
289 | ||
290 | /* Show the currently selected C++ ABI. */ | |
291 | ||
292 | static void | |
293 | show_cp_abi_cmd (char *args, int from_tty) | |
294 | { | |
295 | ui_out_text (uiout, "The currently selected C++ ABI is \""); | |
296 | ||
297 | ui_out_field_string (uiout, "cp-abi", current_cp_abi.shortname); | |
298 | ui_out_text (uiout, "\" ("); | |
299 | ui_out_field_string (uiout, "longname", current_cp_abi.longname); | |
300 | ui_out_text (uiout, ").\n"); | |
301 | } | |
302 | ||
b9362cc7 AC |
303 | extern initialize_file_ftype _initialize_cp_abi; /* -Wmissing-prototypes */ |
304 | ||
fe1f4a5e DJ |
305 | void |
306 | _initialize_cp_abi (void) | |
307 | { | |
308 | register_cp_abi (&auto_cp_abi); | |
309 | switch_to_cp_abi ("auto"); | |
310 | ||
1a966eab AC |
311 | add_cmd ("cp-abi", class_obscure, set_cp_abi_cmd, _("\ |
312 | Set the ABI used for inspecting C++ objects.\n\ | |
313 | \"set cp-abi\" with no arguments will list the available ABIs."), | |
fe1f4a5e DJ |
314 | &setlist); |
315 | ||
316 | add_cmd ("cp-abi", class_obscure, show_cp_abi_cmd, | |
aff410f1 MS |
317 | _("Show the ABI used for inspecting C++ objects."), |
318 | &showlist); | |
fe1f4a5e | 319 | } |