1 /* Generic code for supporting multiple C++ ABI's
3 Copyright (C) 2001, 2002, 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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,
74 const bfd_byte *valaddr,
77 if (current_cp_abi.baseclass_offset == NULL)
78 error (_("ABI doesn't define required function baseclass_offset"));
79 return (*current_cp_abi.baseclass_offset) (type, index,
84 value_virtual_fn_field (struct value **arg1p,
85 struct fn_field *f, int j,
86 struct type *type, int offset)
88 if ((current_cp_abi.virtual_fn_field) == NULL)
90 return (*current_cp_abi.virtual_fn_field) (arg1p, f, j,
95 value_rtti_type (struct value *v, int *full,
96 int *top, int *using_enc)
98 struct type *ret = NULL;
99 struct gdb_exception e;
101 if ((current_cp_abi.rtti_type) == NULL)
103 TRY_CATCH (e, RETURN_MASK_ERROR)
105 ret = (*current_cp_abi.rtti_type) (v, full, top, using_enc);
113 cplus_print_method_ptr (const gdb_byte *contents,
115 struct ui_file *stream)
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);
123 cplus_method_ptr_size (struct type *to_type)
125 if (current_cp_abi.method_ptr_size == NULL)
126 error (_("GDB does not support pointers to methods on this target"));
127 return (*current_cp_abi.method_ptr_size) (to_type);
131 cplus_make_method_ptr (struct type *type, gdb_byte *contents,
132 CORE_ADDR value, int is_virtual)
134 if (current_cp_abi.make_method_ptr == NULL)
135 error (_("GDB does not support pointers to methods on this target"));
136 (*current_cp_abi.make_method_ptr) (type, contents, value, is_virtual);
140 cplus_skip_trampoline (struct frame_info *frame,
143 if (current_cp_abi.skip_trampoline == NULL)
145 return (*current_cp_abi.skip_trampoline) (frame, stop_pc);
149 cplus_method_ptr_to_value (struct value **this_p,
150 struct value *method_ptr)
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);
158 cp_pass_by_reference (struct type *type)
160 if ((current_cp_abi.pass_by_reference) == NULL)
162 return (*current_cp_abi.pass_by_reference) (type);
165 /* Set the current C++ ABI to SHORT_NAME. */
168 switch_to_cp_abi (const char *short_name)
170 struct cp_abi_ops *abi;
172 abi = find_cp_abi (short_name);
176 current_cp_abi = *abi;
180 /* Add ABI to the list of supported C++ ABI's. */
183 register_cp_abi (struct cp_abi_ops *abi)
185 if (num_cp_abis == CP_ABI_MAX)
186 internal_error (__FILE__, __LINE__,
187 _("Too many C++ ABIs, please increase "
188 "CP_ABI_MAX in cp-abi.c"));
190 cp_abis[num_cp_abis++] = abi;
195 /* Set the ABI to use in "auto" mode to SHORT_NAME. */
198 set_cp_abi_as_auto_default (const char *short_name)
200 char *new_longname, *new_doc;
201 struct cp_abi_ops *abi = find_cp_abi (short_name);
204 internal_error (__FILE__, __LINE__,
205 _("Cannot find C++ ABI \"%s\" to set it as auto default."),
208 if (auto_cp_abi.longname != NULL)
209 xfree ((char *) auto_cp_abi.longname);
210 if (auto_cp_abi.doc != NULL)
211 xfree ((char *) auto_cp_abi.doc);
215 auto_cp_abi.shortname = "auto";
216 new_longname = xstrprintf ("currently \"%s\"", abi->shortname);
217 auto_cp_abi.longname = new_longname;
219 new_doc = xstrprintf ("Automatically selected; currently \"%s\"",
221 auto_cp_abi.doc = new_doc;
223 /* Since we copy the current ABI into current_cp_abi instead of
224 using a pointer, if auto is currently the default, we need to
226 if (strcmp (current_cp_abi.shortname, "auto") == 0)
227 switch_to_cp_abi ("auto");
230 /* Return the ABI operations associated with SHORT_NAME. */
232 static struct cp_abi_ops *
233 find_cp_abi (const char *short_name)
237 for (i = 0; i < num_cp_abis; i++)
238 if (strcmp (cp_abis[i]->shortname, short_name) == 0)
244 /* Display the list of registered C++ ABIs. */
247 list_cp_abis (int from_tty)
249 struct cleanup *cleanup_chain;
252 ui_out_text (uiout, "The available C++ ABIs are:\n");
253 cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout,
255 for (i = 0; i < num_cp_abis; i++)
260 ui_out_text (uiout, " ");
261 ui_out_field_string (uiout, "cp-abi", cp_abis[i]->shortname);
263 padcount = 16 - 2 - strlen (cp_abis[i]->shortname);
266 pad[--padcount] = ' ';
267 ui_out_text (uiout, pad);
269 ui_out_field_string (uiout, "doc", cp_abis[i]->doc);
270 ui_out_text (uiout, "\n");
272 do_cleanups (cleanup_chain);
275 /* Set the current C++ ABI, or display the list of options if no
276 argument is given. */
279 set_cp_abi_cmd (char *args, int from_tty)
283 list_cp_abis (from_tty);
287 if (!switch_to_cp_abi (args))
288 error (_("Could not find \"%s\" in ABI list"), args);
291 /* Show the currently selected C++ ABI. */
294 show_cp_abi_cmd (char *args, int from_tty)
296 ui_out_text (uiout, "The currently selected C++ ABI is \"");
298 ui_out_field_string (uiout, "cp-abi", current_cp_abi.shortname);
299 ui_out_text (uiout, "\" (");
300 ui_out_field_string (uiout, "longname", current_cp_abi.longname);
301 ui_out_text (uiout, ").\n");
304 extern initialize_file_ftype _initialize_cp_abi; /* -Wmissing-prototypes */
307 _initialize_cp_abi (void)
309 register_cp_abi (&auto_cp_abi);
310 switch_to_cp_abi ("auto");
312 add_cmd ("cp-abi", class_obscure, set_cp_abi_cmd,
313 _("Set the ABI used for inspecting C++ objects.\n\"set cp-abi\" "
314 "with no arguments will list the available ABIs."),
317 add_cmd ("cp-abi", class_obscure, show_cp_abi_cmd,
318 _("Show the ABI used for inspecting C++ objects."),