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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.1/] [gdb/] [cp-abi.c] - Blame information for rev 227

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1 227 jeremybenn
/* Generic code for supporting multiple C++ ABI's
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   Copyright (C) 2001, 2002, 2003, 2005, 2006, 2007, 2008, 2009, 2010
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   Free Software Foundation, Inc.
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
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#include "defs.h"
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#include "value.h"
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#include "cp-abi.h"
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#include "command.h"
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#include "exceptions.h"
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#include "gdbcmd.h"
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#include "ui-out.h"
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#include "gdb_string.h"
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static struct cp_abi_ops *find_cp_abi (const char *short_name);
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static struct cp_abi_ops current_cp_abi = { "", NULL };
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static struct cp_abi_ops auto_cp_abi = { "auto", NULL };
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#define CP_ABI_MAX 8
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static struct cp_abi_ops *cp_abis[CP_ABI_MAX];
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static int num_cp_abis = 0;
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enum ctor_kinds
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is_constructor_name (const char *name)
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{
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  if ((current_cp_abi.is_constructor_name) == NULL)
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    error (_("ABI doesn't define required function is_constructor_name"));
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  return (*current_cp_abi.is_constructor_name) (name);
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}
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enum dtor_kinds
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is_destructor_name (const char *name)
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{
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  if ((current_cp_abi.is_destructor_name) == NULL)
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    error (_("ABI doesn't define required function is_destructor_name"));
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  return (*current_cp_abi.is_destructor_name) (name);
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}
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int
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is_vtable_name (const char *name)
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{
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  if ((current_cp_abi.is_vtable_name) == NULL)
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    error (_("ABI doesn't define required function is_vtable_name"));
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  return (*current_cp_abi.is_vtable_name) (name);
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}
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64
int
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is_operator_name (const char *name)
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{
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  if ((current_cp_abi.is_operator_name) == NULL)
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    error (_("ABI doesn't define required function is_operator_name"));
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  return (*current_cp_abi.is_operator_name) (name);
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}
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int
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baseclass_offset (struct type *type, int index, const bfd_byte *valaddr,
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                  CORE_ADDR address)
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{
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  if (current_cp_abi.baseclass_offset == NULL)
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    error (_("ABI doesn't define required function baseclass_offset"));
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  return (*current_cp_abi.baseclass_offset) (type, index, valaddr, address);
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}
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struct value *
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value_virtual_fn_field (struct value **arg1p, struct fn_field *f, int j,
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                        struct type *type, int offset)
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{
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  if ((current_cp_abi.virtual_fn_field) == NULL)
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    return NULL;
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  return (*current_cp_abi.virtual_fn_field) (arg1p, f, j, type, offset);
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}
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90
struct type *
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value_rtti_type (struct value *v, int *full, int *top, int *using_enc)
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{
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  struct type *ret = NULL;
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  struct gdb_exception e;
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  if ((current_cp_abi.rtti_type) == NULL)
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    return NULL;
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  TRY_CATCH (e, RETURN_MASK_ERROR)
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    {
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      ret = (*current_cp_abi.rtti_type) (v, full, top, using_enc);
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    }
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  if (e.reason < 0)
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    return NULL;
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  return ret;
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}
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void
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cplus_print_method_ptr (const gdb_byte *contents, struct type *type,
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                        struct ui_file *stream)
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{
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  if (current_cp_abi.print_method_ptr == NULL)
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    error (_("GDB does not support pointers to methods on this target"));
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  (*current_cp_abi.print_method_ptr) (contents, type, stream);
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}
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int
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cplus_method_ptr_size (struct type *to_type)
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{
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  if (current_cp_abi.method_ptr_size == NULL)
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    error (_("GDB does not support pointers to methods on this target"));
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  return (*current_cp_abi.method_ptr_size) (to_type);
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}
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void
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cplus_make_method_ptr (struct type *type, gdb_byte *contents,
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                       CORE_ADDR value, int is_virtual)
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{
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  if (current_cp_abi.make_method_ptr == NULL)
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    error (_("GDB does not support pointers to methods on this target"));
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  (*current_cp_abi.make_method_ptr) (type, contents, value, is_virtual);
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}
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CORE_ADDR
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cplus_skip_trampoline (struct frame_info *frame, CORE_ADDR stop_pc)
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{
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  if (current_cp_abi.skip_trampoline == NULL)
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    return 0;
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  return (*current_cp_abi.skip_trampoline) (frame, stop_pc);
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}
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140
struct value *
141
cplus_method_ptr_to_value (struct value **this_p, struct value *method_ptr)
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{
143
  if (current_cp_abi.method_ptr_to_value == NULL)
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    error (_("GDB does not support pointers to methods on this target"));
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  return (*current_cp_abi.method_ptr_to_value) (this_p, method_ptr);
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}
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148
int
149
cp_pass_by_reference (struct type *type)
150
{
151
  if ((current_cp_abi.pass_by_reference) == NULL)
152
    return 0;
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  return (*current_cp_abi.pass_by_reference) (type);
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}
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156
/* Set the current C++ ABI to SHORT_NAME.  */
157
 
158
static int
159
switch_to_cp_abi (const char *short_name)
160
{
161
  struct cp_abi_ops *abi;
162
 
163
  abi = find_cp_abi (short_name);
164
  if (abi == NULL)
165
    return 0;
166
 
167
  current_cp_abi = *abi;
168
  return 1;
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}
170
 
171
/* Add ABI to the list of supported C++ ABI's.  */
172
 
173
int
174
register_cp_abi (struct cp_abi_ops *abi)
175
{
176
  if (num_cp_abis == CP_ABI_MAX)
177
    internal_error (__FILE__, __LINE__,
178
                    _("Too many C++ ABIs, please increase CP_ABI_MAX in cp-abi.c"));
179
 
180
  cp_abis[num_cp_abis++] = abi;
181
 
182
  return 1;
183
}
184
 
185
/* Set the ABI to use in "auto" mode to SHORT_NAME.  */
186
 
187
void
188
set_cp_abi_as_auto_default (const char *short_name)
189
{
190
  char *new_longname, *new_doc;
191
  struct cp_abi_ops *abi = find_cp_abi (short_name);
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193
  if (abi == NULL)
194
    internal_error (__FILE__, __LINE__,
195
                    _("Cannot find C++ ABI \"%s\" to set it as auto default."),
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                    short_name);
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  if (auto_cp_abi.longname != NULL)
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    xfree ((char *) auto_cp_abi.longname);
200
  if (auto_cp_abi.doc != NULL)
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    xfree ((char *) auto_cp_abi.doc);
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203
  auto_cp_abi = *abi;
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  auto_cp_abi.shortname = "auto";
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  new_longname = xstrprintf ("currently \"%s\"", abi->shortname);
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  auto_cp_abi.longname = new_longname;
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209
  new_doc = xstrprintf ("Automatically selected; currently \"%s\"",
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             abi->shortname);
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  auto_cp_abi.doc = new_doc;
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  /* Since we copy the current ABI into current_cp_abi instead of
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     using a pointer, if auto is currently the default, we need to
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     reset it.  */
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  if (strcmp (current_cp_abi.shortname, "auto") == 0)
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    switch_to_cp_abi ("auto");
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}
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/* Return the ABI operations associated with SHORT_NAME.  */
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222
static struct cp_abi_ops *
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find_cp_abi (const char *short_name)
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{
225
  int i;
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227
  for (i = 0; i < num_cp_abis; i++)
228
    if (strcmp (cp_abis[i]->shortname, short_name) == 0)
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      return cp_abis[i];
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  return NULL;
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}
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/* Display the list of registered C++ ABIs.  */
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static void
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list_cp_abis (int from_tty)
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{
239
  struct cleanup *cleanup_chain;
240
  int i;
241
  ui_out_text (uiout, "The available C++ ABIs are:\n");
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243
  cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "cp-abi-list");
244
  for (i = 0; i < num_cp_abis; i++)
245
    {
246
      char pad[14];
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      int padcount;
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249
      ui_out_text (uiout, "  ");
250
      ui_out_field_string (uiout, "cp-abi", cp_abis[i]->shortname);
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      padcount = 16 - 2 - strlen (cp_abis[i]->shortname);
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      pad[padcount] = 0;
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      while (padcount > 0)
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        pad[--padcount] = ' ';
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      ui_out_text (uiout, pad);
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      ui_out_field_string (uiout, "doc", cp_abis[i]->doc);
259
      ui_out_text (uiout, "\n");
260
    }
261
  do_cleanups (cleanup_chain);
262
}
263
 
264
/* Set the current C++ ABI, or display the list of options if no
265
   argument is given.  */
266
 
267
static void
268
set_cp_abi_cmd (char *args, int from_tty)
269
{
270
  if (args == NULL)
271
    {
272
      list_cp_abis (from_tty);
273
      return;
274
    }
275
 
276
  if (!switch_to_cp_abi (args))
277
    error (_("Could not find \"%s\" in ABI list"), args);
278
}
279
 
280
/* Show the currently selected C++ ABI.  */
281
 
282
static void
283
show_cp_abi_cmd (char *args, int from_tty)
284
{
285
  ui_out_text (uiout, "The currently selected C++ ABI is \"");
286
 
287
  ui_out_field_string (uiout, "cp-abi", current_cp_abi.shortname);
288
  ui_out_text (uiout, "\" (");
289
  ui_out_field_string (uiout, "longname", current_cp_abi.longname);
290
  ui_out_text (uiout, ").\n");
291
}
292
 
293
extern initialize_file_ftype _initialize_cp_abi; /* -Wmissing-prototypes */
294
 
295
void
296
_initialize_cp_abi (void)
297
{
298
  register_cp_abi (&auto_cp_abi);
299
  switch_to_cp_abi ("auto");
300
 
301
  add_cmd ("cp-abi", class_obscure, set_cp_abi_cmd, _("\
302
Set the ABI used for inspecting C++ objects.\n\
303
\"set cp-abi\" with no arguments will list the available ABIs."),
304
           &setlist);
305
 
306
  add_cmd ("cp-abi", class_obscure, show_cp_abi_cmd,
307
           _("Show the ABI used for inspecting C++ objects."), &showlist);
308
}

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