1 /* Generic code for supporting multiple C++ ABI's
3 Copyright (C) 2001, 2002, 2003, 2005, 2006, 2007
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 2 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, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
30 #include "gdb_string.h"
32 static struct cp_abi_ops
*find_cp_abi (const char *short_name
);
34 static struct cp_abi_ops current_cp_abi
= { "", NULL
};
35 static struct cp_abi_ops auto_cp_abi
= { "auto", NULL
};
38 static struct cp_abi_ops
*cp_abis
[CP_ABI_MAX
];
39 static int num_cp_abis
= 0;
42 is_constructor_name (const char *name
)
44 if ((current_cp_abi
.is_constructor_name
) == NULL
)
45 error (_("ABI doesn't define required function is_constructor_name"));
46 return (*current_cp_abi
.is_constructor_name
) (name
);
50 is_destructor_name (const char *name
)
52 if ((current_cp_abi
.is_destructor_name
) == NULL
)
53 error (_("ABI doesn't define required function is_destructor_name"));
54 return (*current_cp_abi
.is_destructor_name
) (name
);
58 is_vtable_name (const char *name
)
60 if ((current_cp_abi
.is_vtable_name
) == NULL
)
61 error (_("ABI doesn't define required function is_vtable_name"));
62 return (*current_cp_abi
.is_vtable_name
) (name
);
66 is_operator_name (const char *name
)
68 if ((current_cp_abi
.is_operator_name
) == NULL
)
69 error (_("ABI doesn't define required function is_operator_name"));
70 return (*current_cp_abi
.is_operator_name
) (name
);
74 baseclass_offset (struct type
*type
, int index
, 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
, valaddr
, address
);
83 value_virtual_fn_field (struct value
**arg1p
, struct fn_field
*f
, int j
,
84 struct type
*type
, int offset
)
86 if ((current_cp_abi
.virtual_fn_field
) == NULL
)
88 return (*current_cp_abi
.virtual_fn_field
) (arg1p
, f
, j
, type
, offset
);
92 value_rtti_type (struct value
*v
, int *full
, int *top
, int *using_enc
)
94 if ((current_cp_abi
.rtti_type
) == NULL
)
96 return (*current_cp_abi
.rtti_type
) (v
, full
, top
, using_enc
);
100 cplus_print_method_ptr (const gdb_byte
*contents
, struct type
*type
,
101 struct ui_file
*stream
)
103 if (current_cp_abi
.print_method_ptr
== NULL
)
104 error (_("GDB does not support pointers to methods on this target"));
105 (*current_cp_abi
.print_method_ptr
) (contents
, type
, stream
);
109 cplus_method_ptr_size (void)
111 if (current_cp_abi
.method_ptr_size
== NULL
)
112 error (_("GDB does not support pointers to methods on this target"));
113 return (*current_cp_abi
.method_ptr_size
) ();
117 cplus_make_method_ptr (gdb_byte
*contents
, CORE_ADDR value
, int is_virtual
)
119 if (current_cp_abi
.make_method_ptr
== NULL
)
120 error (_("GDB does not support pointers to methods on this target"));
121 (*current_cp_abi
.make_method_ptr
) (contents
, value
, is_virtual
);
125 cplus_skip_trampoline (CORE_ADDR stop_pc
)
127 if (current_cp_abi
.skip_trampoline
== NULL
)
129 return (*current_cp_abi
.skip_trampoline
) (stop_pc
);
133 cplus_method_ptr_to_value (struct value
**this_p
, struct value
*method_ptr
)
135 if (current_cp_abi
.method_ptr_to_value
== NULL
)
136 error (_("GDB does not support pointers to methods on this target"));
137 return (*current_cp_abi
.method_ptr_to_value
) (this_p
, method_ptr
);
140 /* Set the current C++ ABI to SHORT_NAME. */
143 switch_to_cp_abi (const char *short_name
)
145 struct cp_abi_ops
*abi
;
147 abi
= find_cp_abi (short_name
);
151 current_cp_abi
= *abi
;
155 /* Add ABI to the list of supported C++ ABI's. */
158 register_cp_abi (struct cp_abi_ops
*abi
)
160 if (num_cp_abis
== CP_ABI_MAX
)
161 internal_error (__FILE__
, __LINE__
,
162 _("Too many C++ ABIs, please increase CP_ABI_MAX in cp-abi.c"));
164 cp_abis
[num_cp_abis
++] = abi
;
169 /* Set the ABI to use in "auto" mode to SHORT_NAME. */
172 set_cp_abi_as_auto_default (const char *short_name
)
174 char *new_longname
, *new_doc
;
175 struct cp_abi_ops
*abi
= find_cp_abi (short_name
);
178 internal_error (__FILE__
, __LINE__
,
179 _("Cannot find C++ ABI \"%s\" to set it as auto default."),
182 if (auto_cp_abi
.longname
!= NULL
)
183 xfree ((char *) auto_cp_abi
.longname
);
184 if (auto_cp_abi
.doc
!= NULL
)
185 xfree ((char *) auto_cp_abi
.doc
);
189 auto_cp_abi
.shortname
= "auto";
190 xasprintf (&new_longname
, "currently \"%s\"", abi
->shortname
);
191 auto_cp_abi
.longname
= new_longname
;
193 xasprintf (&new_doc
, "Automatically selected; currently \"%s\"",
195 auto_cp_abi
.doc
= new_doc
;
197 /* Since we copy the current ABI into current_cp_abi instead of
198 using a pointer, if auto is currently the default, we need to
200 if (strcmp (current_cp_abi
.shortname
, "auto") == 0)
201 switch_to_cp_abi ("auto");
204 /* Return the ABI operations associated with SHORT_NAME. */
206 static struct cp_abi_ops
*
207 find_cp_abi (const char *short_name
)
211 for (i
= 0; i
< num_cp_abis
; i
++)
212 if (strcmp (cp_abis
[i
]->shortname
, short_name
) == 0)
218 /* Display the list of registered C++ ABIs. */
221 list_cp_abis (int from_tty
)
223 struct cleanup
*cleanup_chain
;
225 ui_out_text (uiout
, "The available C++ ABIs are:\n");
227 cleanup_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "cp-abi-list");
228 for (i
= 0; i
< num_cp_abis
; i
++)
233 ui_out_text (uiout
, " ");
234 ui_out_field_string (uiout
, "cp-abi", cp_abis
[i
]->shortname
);
236 padcount
= 16 - 2 - strlen (cp_abis
[i
]->shortname
);
239 pad
[--padcount
] = ' ';
240 ui_out_text (uiout
, pad
);
242 ui_out_field_string (uiout
, "doc", cp_abis
[i
]->doc
);
243 ui_out_text (uiout
, "\n");
245 do_cleanups (cleanup_chain
);
248 /* Set the current C++ ABI, or display the list of options if no
249 argument is given. */
252 set_cp_abi_cmd (char *args
, int from_tty
)
256 list_cp_abis (from_tty
);
260 if (!switch_to_cp_abi (args
))
261 error (_("Could not find \"%s\" in ABI list"), args
);
264 /* Show the currently selected C++ ABI. */
267 show_cp_abi_cmd (char *args
, int from_tty
)
269 ui_out_text (uiout
, "The currently selected C++ ABI is \"");
271 ui_out_field_string (uiout
, "cp-abi", current_cp_abi
.shortname
);
272 ui_out_text (uiout
, "\" (");
273 ui_out_field_string (uiout
, "longname", current_cp_abi
.longname
);
274 ui_out_text (uiout
, ").\n");
277 extern initialize_file_ftype _initialize_cp_abi
; /* -Wmissing-prototypes */
280 _initialize_cp_abi (void)
282 register_cp_abi (&auto_cp_abi
);
283 switch_to_cp_abi ("auto");
285 add_cmd ("cp-abi", class_obscure
, set_cp_abi_cmd
, _("\
286 Set the ABI used for inspecting C++ objects.\n\
287 \"set cp-abi\" with no arguments will list the available ABIs."),
290 add_cmd ("cp-abi", class_obscure
, show_cp_abi_cmd
,
291 _("Show the ABI used for inspecting C++ objects."), &showlist
);