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015a42b4 | 1 | /* Generic code for supporting multiple C++ ABI's |
06c4d4dc | 2 | |
9b254dd1 | 3 | Copyright (C) 2001, 2002, 2003, 2005, 2006, 2007, 2008 |
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 DJ |
24 | #include "command.h" |
25 | #include "gdbcmd.h" | |
26 | #include "ui-out.h" | |
27 | ||
309367d4 | 28 | #include "gdb_string.h" |
015a42b4 | 29 | |
fe1f4a5e | 30 | static struct cp_abi_ops *find_cp_abi (const char *short_name); |
015a42b4 | 31 | |
fe1f4a5e DJ |
32 | static struct cp_abi_ops current_cp_abi = { "", NULL }; |
33 | static struct cp_abi_ops auto_cp_abi = { "auto", NULL }; | |
015a42b4 | 34 | |
fe1f4a5e DJ |
35 | #define CP_ABI_MAX 8 |
36 | static struct cp_abi_ops *cp_abis[CP_ABI_MAX]; | |
37 | static int num_cp_abis = 0; | |
015a42b4 JB |
38 | |
39 | enum ctor_kinds | |
40 | is_constructor_name (const char *name) | |
41 | { | |
42 | if ((current_cp_abi.is_constructor_name) == NULL) | |
8a3fe4f8 | 43 | error (_("ABI doesn't define required function is_constructor_name")); |
015a42b4 JB |
44 | return (*current_cp_abi.is_constructor_name) (name); |
45 | } | |
46 | ||
47 | enum dtor_kinds | |
48 | is_destructor_name (const char *name) | |
49 | { | |
50 | if ((current_cp_abi.is_destructor_name) == NULL) | |
8a3fe4f8 | 51 | error (_("ABI doesn't define required function is_destructor_name")); |
015a42b4 JB |
52 | return (*current_cp_abi.is_destructor_name) (name); |
53 | } | |
54 | ||
55 | int | |
56 | is_vtable_name (const char *name) | |
57 | { | |
58 | if ((current_cp_abi.is_vtable_name) == NULL) | |
8a3fe4f8 | 59 | error (_("ABI doesn't define required function is_vtable_name")); |
015a42b4 JB |
60 | return (*current_cp_abi.is_vtable_name) (name); |
61 | } | |
62 | ||
63 | int | |
64 | is_operator_name (const char *name) | |
65 | { | |
66 | if ((current_cp_abi.is_operator_name) == NULL) | |
8a3fe4f8 | 67 | error (_("ABI doesn't define required function is_operator_name")); |
015a42b4 JB |
68 | return (*current_cp_abi.is_operator_name) (name); |
69 | } | |
70 | ||
1514d34e | 71 | int |
06c4d4dc | 72 | baseclass_offset (struct type *type, int index, const bfd_byte *valaddr, |
1514d34e DJ |
73 | CORE_ADDR address) |
74 | { | |
75 | if (current_cp_abi.baseclass_offset == NULL) | |
8a3fe4f8 | 76 | error (_("ABI doesn't define required function baseclass_offset")); |
1514d34e DJ |
77 | return (*current_cp_abi.baseclass_offset) (type, index, valaddr, address); |
78 | } | |
79 | ||
e933e538 | 80 | struct value * |
fe1f4a5e DJ |
81 | value_virtual_fn_field (struct value **arg1p, struct fn_field *f, int j, |
82 | struct type *type, int offset) | |
015a42b4 JB |
83 | { |
84 | if ((current_cp_abi.virtual_fn_field) == NULL) | |
85 | return NULL; | |
86 | return (*current_cp_abi.virtual_fn_field) (arg1p, f, j, type, offset); | |
87 | } | |
1514d34e | 88 | |
015a42b4 | 89 | struct type * |
e933e538 | 90 | value_rtti_type (struct value *v, int *full, int *top, int *using_enc) |
015a42b4 JB |
91 | { |
92 | if ((current_cp_abi.rtti_type) == NULL) | |
93 | return NULL; | |
94 | return (*current_cp_abi.rtti_type) (v, full, top, using_enc); | |
95 | } | |
96 | ||
0d5de010 DJ |
97 | void |
98 | cplus_print_method_ptr (const gdb_byte *contents, struct type *type, | |
99 | struct ui_file *stream) | |
100 | { | |
101 | if (current_cp_abi.print_method_ptr == NULL) | |
102 | error (_("GDB does not support pointers to methods on this target")); | |
103 | (*current_cp_abi.print_method_ptr) (contents, type, stream); | |
104 | } | |
105 | ||
106 | int | |
107 | cplus_method_ptr_size (void) | |
108 | { | |
109 | if (current_cp_abi.method_ptr_size == NULL) | |
110 | error (_("GDB does not support pointers to methods on this target")); | |
111 | return (*current_cp_abi.method_ptr_size) (); | |
112 | } | |
113 | ||
114 | void | |
115 | cplus_make_method_ptr (gdb_byte *contents, CORE_ADDR value, int is_virtual) | |
116 | { | |
117 | if (current_cp_abi.make_method_ptr == NULL) | |
118 | error (_("GDB does not support pointers to methods on this target")); | |
119 | (*current_cp_abi.make_method_ptr) (contents, value, is_virtual); | |
120 | } | |
121 | ||
b18be20d | 122 | CORE_ADDR |
52f729a7 | 123 | cplus_skip_trampoline (struct frame_info *frame, CORE_ADDR stop_pc) |
b18be20d DJ |
124 | { |
125 | if (current_cp_abi.skip_trampoline == NULL) | |
126 | return 0; | |
52f729a7 | 127 | return (*current_cp_abi.skip_trampoline) (frame, stop_pc); |
b18be20d DJ |
128 | } |
129 | ||
0d5de010 DJ |
130 | struct value * |
131 | cplus_method_ptr_to_value (struct value **this_p, struct value *method_ptr) | |
132 | { | |
133 | if (current_cp_abi.method_ptr_to_value == NULL) | |
134 | error (_("GDB does not support pointers to methods on this target")); | |
135 | return (*current_cp_abi.method_ptr_to_value) (this_p, method_ptr); | |
136 | } | |
137 | ||
41f1b697 DJ |
138 | int |
139 | cp_pass_by_reference (struct type *type) | |
140 | { | |
141 | if ((current_cp_abi.pass_by_reference) == NULL) | |
142 | return 0; | |
143 | return (*current_cp_abi.pass_by_reference) (type); | |
144 | } | |
145 | ||
fe1f4a5e DJ |
146 | /* Set the current C++ ABI to SHORT_NAME. */ |
147 | ||
148 | static int | |
149 | switch_to_cp_abi (const char *short_name) | |
150 | { | |
151 | struct cp_abi_ops *abi; | |
152 | ||
153 | abi = find_cp_abi (short_name); | |
154 | if (abi == NULL) | |
155 | return 0; | |
156 | ||
157 | current_cp_abi = *abi; | |
158 | return 1; | |
159 | } | |
160 | ||
161 | /* Add ABI to the list of supported C++ ABI's. */ | |
162 | ||
015a42b4 | 163 | int |
fe1f4a5e | 164 | register_cp_abi (struct cp_abi_ops *abi) |
015a42b4 | 165 | { |
fe1f4a5e DJ |
166 | if (num_cp_abis == CP_ABI_MAX) |
167 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 168 | _("Too many C++ ABIs, please increase CP_ABI_MAX in cp-abi.c")); |
fe1f4a5e | 169 | |
015a42b4 JB |
170 | cp_abis[num_cp_abis++] = abi; |
171 | ||
172 | return 1; | |
fe1f4a5e DJ |
173 | } |
174 | ||
175 | /* Set the ABI to use in "auto" mode to SHORT_NAME. */ | |
015a42b4 | 176 | |
fe1f4a5e DJ |
177 | void |
178 | set_cp_abi_as_auto_default (const char *short_name) | |
179 | { | |
180 | char *new_longname, *new_doc; | |
181 | struct cp_abi_ops *abi = find_cp_abi (short_name); | |
182 | ||
183 | if (abi == NULL) | |
184 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 185 | _("Cannot find C++ ABI \"%s\" to set it as auto default."), |
fe1f4a5e DJ |
186 | short_name); |
187 | ||
188 | if (auto_cp_abi.longname != NULL) | |
189 | xfree ((char *) auto_cp_abi.longname); | |
190 | if (auto_cp_abi.doc != NULL) | |
191 | xfree ((char *) auto_cp_abi.doc); | |
192 | ||
193 | auto_cp_abi = *abi; | |
194 | ||
195 | auto_cp_abi.shortname = "auto"; | |
0dfdb8ba | 196 | new_longname = xstrprintf ("currently \"%s\"", abi->shortname); |
fe1f4a5e DJ |
197 | auto_cp_abi.longname = new_longname; |
198 | ||
0dfdb8ba | 199 | new_doc = xstrprintf ("Automatically selected; currently \"%s\"", |
049742da | 200 | abi->shortname); |
fe1f4a5e DJ |
201 | auto_cp_abi.doc = new_doc; |
202 | ||
203 | /* Since we copy the current ABI into current_cp_abi instead of | |
204 | using a pointer, if auto is currently the default, we need to | |
205 | reset it. */ | |
206 | if (strcmp (current_cp_abi.shortname, "auto") == 0) | |
207 | switch_to_cp_abi ("auto"); | |
015a42b4 JB |
208 | } |
209 | ||
fe1f4a5e DJ |
210 | /* Return the ABI operations associated with SHORT_NAME. */ |
211 | ||
212 | static struct cp_abi_ops * | |
213 | find_cp_abi (const char *short_name) | |
015a42b4 JB |
214 | { |
215 | int i; | |
fe1f4a5e | 216 | |
015a42b4 | 217 | for (i = 0; i < num_cp_abis; i++) |
fe1f4a5e DJ |
218 | if (strcmp (cp_abis[i]->shortname, short_name) == 0) |
219 | return cp_abis[i]; | |
220 | ||
221 | return NULL; | |
015a42b4 JB |
222 | } |
223 | ||
fe1f4a5e DJ |
224 | /* Display the list of registered C++ ABIs. */ |
225 | ||
226 | static void | |
227 | list_cp_abis (int from_tty) | |
228 | { | |
229 | struct cleanup *cleanup_chain; | |
230 | int i; | |
231 | ui_out_text (uiout, "The available C++ ABIs are:\n"); | |
232 | ||
233 | cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "cp-abi-list"); | |
234 | for (i = 0; i < num_cp_abis; i++) | |
235 | { | |
236 | char pad[14]; | |
237 | int padcount; | |
238 | ||
239 | ui_out_text (uiout, " "); | |
240 | ui_out_field_string (uiout, "cp-abi", cp_abis[i]->shortname); | |
241 | ||
242 | padcount = 16 - 2 - strlen (cp_abis[i]->shortname); | |
243 | pad[padcount] = 0; | |
244 | while (padcount > 0) | |
245 | pad[--padcount] = ' '; | |
246 | ui_out_text (uiout, pad); | |
247 | ||
248 | ui_out_field_string (uiout, "doc", cp_abis[i]->doc); | |
249 | ui_out_text (uiout, "\n"); | |
250 | } | |
251 | do_cleanups (cleanup_chain); | |
252 | } | |
253 | ||
254 | /* Set the current C++ ABI, or display the list of options if no | |
255 | argument is given. */ | |
256 | ||
257 | static void | |
258 | set_cp_abi_cmd (char *args, int from_tty) | |
259 | { | |
260 | if (args == NULL) | |
261 | { | |
262 | list_cp_abis (from_tty); | |
263 | return; | |
264 | } | |
265 | ||
266 | if (!switch_to_cp_abi (args)) | |
8a3fe4f8 | 267 | error (_("Could not find \"%s\" in ABI list"), args); |
fe1f4a5e DJ |
268 | } |
269 | ||
270 | /* Show the currently selected C++ ABI. */ | |
271 | ||
272 | static void | |
273 | show_cp_abi_cmd (char *args, int from_tty) | |
274 | { | |
275 | ui_out_text (uiout, "The currently selected C++ ABI is \""); | |
276 | ||
277 | ui_out_field_string (uiout, "cp-abi", current_cp_abi.shortname); | |
278 | ui_out_text (uiout, "\" ("); | |
279 | ui_out_field_string (uiout, "longname", current_cp_abi.longname); | |
280 | ui_out_text (uiout, ").\n"); | |
281 | } | |
282 | ||
b9362cc7 AC |
283 | extern initialize_file_ftype _initialize_cp_abi; /* -Wmissing-prototypes */ |
284 | ||
fe1f4a5e DJ |
285 | void |
286 | _initialize_cp_abi (void) | |
287 | { | |
288 | register_cp_abi (&auto_cp_abi); | |
289 | switch_to_cp_abi ("auto"); | |
290 | ||
1a966eab AC |
291 | add_cmd ("cp-abi", class_obscure, set_cp_abi_cmd, _("\ |
292 | Set the ABI used for inspecting C++ objects.\n\ | |
293 | \"set cp-abi\" with no arguments will list the available ABIs."), | |
fe1f4a5e DJ |
294 | &setlist); |
295 | ||
296 | add_cmd ("cp-abi", class_obscure, show_cp_abi_cmd, | |
1a966eab | 297 | _("Show the ABI used for inspecting C++ objects."), &showlist); |
fe1f4a5e | 298 | } |