1 /* Generic code for supporting multiple C++ ABI's
3 Copyright (C) 2001, 2002, 2003, 2005, 2006, 2007, 2008, 2009, 2010
4 Free Software Foundation, Inc.
6 This file is part of GDB.
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 3 of the License, or
11 (at your option) any later version.
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.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
25 #include "exceptions.h"
29 #include "gdb_string.h"
31 static struct cp_abi_ops *find_cp_abi (const char *short_name);
33 static struct cp_abi_ops current_cp_abi = { "", NULL };
34 static struct cp_abi_ops auto_cp_abi = { "auto", NULL };
37 static struct cp_abi_ops *cp_abis[CP_ABI_MAX];
38 static int num_cp_abis = 0;
41 is_constructor_name (const char *name)
43 if ((current_cp_abi.is_constructor_name) == NULL)
44 error (_("ABI doesn't define required function is_constructor_name"));
45 return (*current_cp_abi.is_constructor_name) (name);
49 is_destructor_name (const char *name)
51 if ((current_cp_abi.is_destructor_name) == NULL)
52 error (_("ABI doesn't define required function is_destructor_name"));
53 return (*current_cp_abi.is_destructor_name) (name);
57 is_vtable_name (const char *name)
59 if ((current_cp_abi.is_vtable_name) == NULL)
60 error (_("ABI doesn't define required function is_vtable_name"));
61 return (*current_cp_abi.is_vtable_name) (name);
65 is_operator_name (const char *name)
67 if ((current_cp_abi.is_operator_name) == NULL)
68 error (_("ABI doesn't define required function is_operator_name"));
69 return (*current_cp_abi.is_operator_name) (name);
73 baseclass_offset (struct type *type, int index, const bfd_byte *valaddr,
76 if (current_cp_abi.baseclass_offset == NULL)
77 error (_("ABI doesn't define required function baseclass_offset"));
78 return (*current_cp_abi.baseclass_offset) (type, index, valaddr, address);
82 value_virtual_fn_field (struct value **arg1p, struct fn_field *f, int j,
83 struct type *type, int offset)
85 if ((current_cp_abi.virtual_fn_field) == NULL)
87 return (*current_cp_abi.virtual_fn_field) (arg1p, f, j, type, offset);
91 value_rtti_type (struct value *v, int *full, int *top, int *using_enc)
93 struct type *ret = NULL;
94 struct gdb_exception e;
96 if ((current_cp_abi.rtti_type) == NULL)
98 TRY_CATCH (e, RETURN_MASK_ERROR)
100 ret = (*current_cp_abi.rtti_type) (v, full, top, using_enc);
108 cplus_print_method_ptr (const gdb_byte *contents, struct type *type,
109 struct ui_file *stream)
111 if (current_cp_abi.print_method_ptr == NULL)
112 error (_("GDB does not support pointers to methods on this target"));
113 (*current_cp_abi.print_method_ptr) (contents, type, stream);
117 cplus_method_ptr_size (struct type *to_type)
119 if (current_cp_abi.method_ptr_size == NULL)
120 error (_("GDB does not support pointers to methods on this target"));
121 return (*current_cp_abi.method_ptr_size) (to_type);
125 cplus_make_method_ptr (struct type *type, gdb_byte *contents,
126 CORE_ADDR value, int is_virtual)
128 if (current_cp_abi.make_method_ptr == NULL)
129 error (_("GDB does not support pointers to methods on this target"));
130 (*current_cp_abi.make_method_ptr) (type, contents, value, is_virtual);
134 cplus_skip_trampoline (struct frame_info *frame, CORE_ADDR stop_pc)
136 if (current_cp_abi.skip_trampoline == NULL)
138 return (*current_cp_abi.skip_trampoline) (frame, stop_pc);
142 cplus_method_ptr_to_value (struct value **this_p, struct value *method_ptr)
144 if (current_cp_abi.method_ptr_to_value == NULL)
145 error (_("GDB does not support pointers to methods on this target"));
146 return (*current_cp_abi.method_ptr_to_value) (this_p, method_ptr);
150 cp_pass_by_reference (struct type *type)
152 if ((current_cp_abi.pass_by_reference) == NULL)
154 return (*current_cp_abi.pass_by_reference) (type);
157 /* Set the current C++ ABI to SHORT_NAME. */
160 switch_to_cp_abi (const char *short_name)
162 struct cp_abi_ops *abi;
164 abi = find_cp_abi (short_name);
168 current_cp_abi = *abi;
172 /* Add ABI to the list of supported C++ ABI's. */
175 register_cp_abi (struct cp_abi_ops *abi)
177 if (num_cp_abis == CP_ABI_MAX)
178 internal_error (__FILE__, __LINE__,
179 _("Too many C++ ABIs, please increase CP_ABI_MAX in cp-abi.c"));
181 cp_abis[num_cp_abis++] = abi;
186 /* Set the ABI to use in "auto" mode to SHORT_NAME. */
189 set_cp_abi_as_auto_default (const char *short_name)
191 char *new_longname, *new_doc;
192 struct cp_abi_ops *abi = find_cp_abi (short_name);
195 internal_error (__FILE__, __LINE__,
196 _("Cannot find C++ ABI \"%s\" to set it as auto default."),
199 if (auto_cp_abi.longname != NULL)
200 xfree ((char *) auto_cp_abi.longname);
201 if (auto_cp_abi.doc != NULL)
202 xfree ((char *) auto_cp_abi.doc);
206 auto_cp_abi.shortname = "auto";
207 new_longname = xstrprintf ("currently \"%s\"", abi->shortname);
208 auto_cp_abi.longname = new_longname;
210 new_doc = xstrprintf ("Automatically selected; currently \"%s\"",
212 auto_cp_abi.doc = new_doc;
214 /* Since we copy the current ABI into current_cp_abi instead of
215 using a pointer, if auto is currently the default, we need to
217 if (strcmp (current_cp_abi.shortname, "auto") == 0)
218 switch_to_cp_abi ("auto");
221 /* Return the ABI operations associated with SHORT_NAME. */
223 static struct cp_abi_ops *
224 find_cp_abi (const char *short_name)
228 for (i = 0; i < num_cp_abis; i++)
229 if (strcmp (cp_abis[i]->shortname, short_name) == 0)
235 /* Display the list of registered C++ ABIs. */
238 list_cp_abis (int from_tty)
240 struct cleanup *cleanup_chain;
243 ui_out_text (uiout, "The available C++ ABIs are:\n");
244 cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "cp-abi-list");
245 for (i = 0; i < num_cp_abis; i++)
250 ui_out_text (uiout, " ");
251 ui_out_field_string (uiout, "cp-abi", cp_abis[i]->shortname);
253 padcount = 16 - 2 - strlen (cp_abis[i]->shortname);
256 pad[--padcount] = ' ';
257 ui_out_text (uiout, pad);
259 ui_out_field_string (uiout, "doc", cp_abis[i]->doc);
260 ui_out_text (uiout, "\n");
262 do_cleanups (cleanup_chain);
265 /* Set the current C++ ABI, or display the list of options if no
266 argument is given. */
269 set_cp_abi_cmd (char *args, int from_tty)
273 list_cp_abis (from_tty);
277 if (!switch_to_cp_abi (args))
278 error (_("Could not find \"%s\" in ABI list"), args);
281 /* Show the currently selected C++ ABI. */
284 show_cp_abi_cmd (char *args, int from_tty)
286 ui_out_text (uiout, "The currently selected C++ ABI is \"");
288 ui_out_field_string (uiout, "cp-abi", current_cp_abi.shortname);
289 ui_out_text (uiout, "\" (");
290 ui_out_field_string (uiout, "longname", current_cp_abi.longname);
291 ui_out_text (uiout, ").\n");
294 extern initialize_file_ftype _initialize_cp_abi; /* -Wmissing-prototypes */
297 _initialize_cp_abi (void)
299 register_cp_abi (&auto_cp_abi);
300 switch_to_cp_abi ("auto");
302 add_cmd ("cp-abi", class_obscure, set_cp_abi_cmd, _("\
303 Set the ABI used for inspecting C++ objects.\n\
304 \"set cp-abi\" with no arguments will list the available ABIs."),
307 add_cmd ("cp-abi", class_obscure, show_cp_abi_cmd,
308 _("Show the ABI used for inspecting C++ objects."), &showlist);