1 /* Generic code for supporting multiple C++ ABI's
3 Copyright (C) 2001, 2002, 2003, 2005, 2006, 2007, 2008
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
;
95 if ((current_cp_abi
.rtti_type
) == NULL
)
97 TRY_CATCH (e
, RETURN_MASK_ERROR
)
99 ret
= (*current_cp_abi
.rtti_type
) (v
, full
, top
, using_enc
);
107 cplus_print_method_ptr (const gdb_byte
*contents
, struct type
*type
,
108 struct ui_file
*stream
)
110 if (current_cp_abi
.print_method_ptr
== NULL
)
111 error (_("GDB does not support pointers to methods on this target"));
112 (*current_cp_abi
.print_method_ptr
) (contents
, type
, stream
);
116 cplus_method_ptr_size (void)
118 if (current_cp_abi
.method_ptr_size
== NULL
)
119 error (_("GDB does not support pointers to methods on this target"));
120 return (*current_cp_abi
.method_ptr_size
) ();
124 cplus_make_method_ptr (gdb_byte
*contents
, CORE_ADDR value
, int is_virtual
)
126 if (current_cp_abi
.make_method_ptr
== NULL
)
127 error (_("GDB does not support pointers to methods on this target"));
128 (*current_cp_abi
.make_method_ptr
) (contents
, value
, is_virtual
);
132 cplus_skip_trampoline (struct frame_info
*frame
, CORE_ADDR stop_pc
)
134 if (current_cp_abi
.skip_trampoline
== NULL
)
136 return (*current_cp_abi
.skip_trampoline
) (frame
, stop_pc
);
140 cplus_method_ptr_to_value (struct value
**this_p
, struct value
*method_ptr
)
142 if (current_cp_abi
.method_ptr_to_value
== NULL
)
143 error (_("GDB does not support pointers to methods on this target"));
144 return (*current_cp_abi
.method_ptr_to_value
) (this_p
, method_ptr
);
148 cp_pass_by_reference (struct type
*type
)
150 if ((current_cp_abi
.pass_by_reference
) == NULL
)
152 return (*current_cp_abi
.pass_by_reference
) (type
);
155 /* Set the current C++ ABI to SHORT_NAME. */
158 switch_to_cp_abi (const char *short_name
)
160 struct cp_abi_ops
*abi
;
162 abi
= find_cp_abi (short_name
);
166 current_cp_abi
= *abi
;
170 /* Add ABI to the list of supported C++ ABI's. */
173 register_cp_abi (struct cp_abi_ops
*abi
)
175 if (num_cp_abis
== CP_ABI_MAX
)
176 internal_error (__FILE__
, __LINE__
,
177 _("Too many C++ ABIs, please increase CP_ABI_MAX in cp-abi.c"));
179 cp_abis
[num_cp_abis
++] = abi
;
184 /* Set the ABI to use in "auto" mode to SHORT_NAME. */
187 set_cp_abi_as_auto_default (const char *short_name
)
189 char *new_longname
, *new_doc
;
190 struct cp_abi_ops
*abi
= find_cp_abi (short_name
);
193 internal_error (__FILE__
, __LINE__
,
194 _("Cannot find C++ ABI \"%s\" to set it as auto default."),
197 if (auto_cp_abi
.longname
!= NULL
)
198 xfree ((char *) auto_cp_abi
.longname
);
199 if (auto_cp_abi
.doc
!= NULL
)
200 xfree ((char *) auto_cp_abi
.doc
);
204 auto_cp_abi
.shortname
= "auto";
205 new_longname
= xstrprintf ("currently \"%s\"", abi
->shortname
);
206 auto_cp_abi
.longname
= new_longname
;
208 new_doc
= xstrprintf ("Automatically selected; currently \"%s\"",
210 auto_cp_abi
.doc
= new_doc
;
212 /* Since we copy the current ABI into current_cp_abi instead of
213 using a pointer, if auto is currently the default, we need to
215 if (strcmp (current_cp_abi
.shortname
, "auto") == 0)
216 switch_to_cp_abi ("auto");
219 /* Return the ABI operations associated with SHORT_NAME. */
221 static struct cp_abi_ops
*
222 find_cp_abi (const char *short_name
)
226 for (i
= 0; i
< num_cp_abis
; i
++)
227 if (strcmp (cp_abis
[i
]->shortname
, short_name
) == 0)
233 /* Display the list of registered C++ ABIs. */
236 list_cp_abis (int from_tty
)
238 struct cleanup
*cleanup_chain
;
240 ui_out_text (uiout
, "The available C++ ABIs are:\n");
242 cleanup_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "cp-abi-list");
243 for (i
= 0; i
< num_cp_abis
; i
++)
248 ui_out_text (uiout
, " ");
249 ui_out_field_string (uiout
, "cp-abi", cp_abis
[i
]->shortname
);
251 padcount
= 16 - 2 - strlen (cp_abis
[i
]->shortname
);
254 pad
[--padcount
] = ' ';
255 ui_out_text (uiout
, pad
);
257 ui_out_field_string (uiout
, "doc", cp_abis
[i
]->doc
);
258 ui_out_text (uiout
, "\n");
260 do_cleanups (cleanup_chain
);
263 /* Set the current C++ ABI, or display the list of options if no
264 argument is given. */
267 set_cp_abi_cmd (char *args
, int from_tty
)
271 list_cp_abis (from_tty
);
275 if (!switch_to_cp_abi (args
))
276 error (_("Could not find \"%s\" in ABI list"), args
);
279 /* Show the currently selected C++ ABI. */
282 show_cp_abi_cmd (char *args
, int from_tty
)
284 ui_out_text (uiout
, "The currently selected C++ ABI is \"");
286 ui_out_field_string (uiout
, "cp-abi", current_cp_abi
.shortname
);
287 ui_out_text (uiout
, "\" (");
288 ui_out_field_string (uiout
, "longname", current_cp_abi
.longname
);
289 ui_out_text (uiout
, ").\n");
292 extern initialize_file_ftype _initialize_cp_abi
; /* -Wmissing-prototypes */
295 _initialize_cp_abi (void)
297 register_cp_abi (&auto_cp_abi
);
298 switch_to_cp_abi ("auto");
300 add_cmd ("cp-abi", class_obscure
, set_cp_abi_cmd
, _("\
301 Set the ABI used for inspecting C++ objects.\n\
302 \"set cp-abi\" with no arguments will list the available ABIs."),
305 add_cmd ("cp-abi", class_obscure
, show_cp_abi_cmd
,
306 _("Show the ABI used for inspecting C++ objects."), &showlist
);