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 CP_ABI_MAX in cp-abi.c"));
189 cp_abis
[num_cp_abis
++] = abi
;
194 /* Set the ABI to use in "auto" mode to SHORT_NAME. */
197 set_cp_abi_as_auto_default (const char *short_name
)
199 char *new_longname
, *new_doc
;
200 struct cp_abi_ops
*abi
= find_cp_abi (short_name
);
203 internal_error (__FILE__
, __LINE__
,
204 _("Cannot find C++ ABI \"%s\" to set it as auto default."),
207 if (auto_cp_abi
.longname
!= NULL
)
208 xfree ((char *) auto_cp_abi
.longname
);
209 if (auto_cp_abi
.doc
!= NULL
)
210 xfree ((char *) auto_cp_abi
.doc
);
214 auto_cp_abi
.shortname
= "auto";
215 new_longname
= xstrprintf ("currently \"%s\"", abi
->shortname
);
216 auto_cp_abi
.longname
= new_longname
;
218 new_doc
= xstrprintf ("Automatically selected; currently \"%s\"",
220 auto_cp_abi
.doc
= new_doc
;
222 /* Since we copy the current ABI into current_cp_abi instead of
223 using a pointer, if auto is currently the default, we need to
225 if (strcmp (current_cp_abi
.shortname
, "auto") == 0)
226 switch_to_cp_abi ("auto");
229 /* Return the ABI operations associated with SHORT_NAME. */
231 static struct cp_abi_ops
*
232 find_cp_abi (const char *short_name
)
236 for (i
= 0; i
< num_cp_abis
; i
++)
237 if (strcmp (cp_abis
[i
]->shortname
, short_name
) == 0)
243 /* Display the list of registered C++ ABIs. */
246 list_cp_abis (int from_tty
)
248 struct cleanup
*cleanup_chain
;
251 ui_out_text (uiout
, "The available C++ ABIs are:\n");
252 cleanup_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
,
254 for (i
= 0; i
< num_cp_abis
; i
++)
259 ui_out_text (uiout
, " ");
260 ui_out_field_string (uiout
, "cp-abi", cp_abis
[i
]->shortname
);
262 padcount
= 16 - 2 - strlen (cp_abis
[i
]->shortname
);
265 pad
[--padcount
] = ' ';
266 ui_out_text (uiout
, pad
);
268 ui_out_field_string (uiout
, "doc", cp_abis
[i
]->doc
);
269 ui_out_text (uiout
, "\n");
271 do_cleanups (cleanup_chain
);
274 /* Set the current C++ ABI, or display the list of options if no
275 argument is given. */
278 set_cp_abi_cmd (char *args
, int from_tty
)
282 list_cp_abis (from_tty
);
286 if (!switch_to_cp_abi (args
))
287 error (_("Could not find \"%s\" in ABI list"), args
);
290 /* Show the currently selected C++ ABI. */
293 show_cp_abi_cmd (char *args
, int from_tty
)
295 ui_out_text (uiout
, "The currently selected C++ ABI is \"");
297 ui_out_field_string (uiout
, "cp-abi", current_cp_abi
.shortname
);
298 ui_out_text (uiout
, "\" (");
299 ui_out_field_string (uiout
, "longname", current_cp_abi
.longname
);
300 ui_out_text (uiout
, ").\n");
303 extern initialize_file_ftype _initialize_cp_abi
; /* -Wmissing-prototypes */
306 _initialize_cp_abi (void)
308 register_cp_abi (&auto_cp_abi
);
309 switch_to_cp_abi ("auto");
311 add_cmd ("cp-abi", class_obscure
, set_cp_abi_cmd
, _("\
312 Set the ABI used for inspecting C++ objects.\n\
313 \"set cp-abi\" with no arguments will list the available ABIs."),
316 add_cmd ("cp-abi", class_obscure
, show_cp_abi_cmd
,
317 _("Show the ABI used for inspecting C++ objects."),