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/* Generic code for supporting multiple C++ ABI's
Copyright 2001, 2002, 2003 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "value.h"
#include "cp-abi.h"
#include "command.h"
#include "gdbcmd.h"
#include "ui-out.h"
#include "gdb_string.h"
static struct cp_abi_ops *find_cp_abi (const char *short_name);
static struct cp_abi_ops current_cp_abi = { "", NULL };
static struct cp_abi_ops auto_cp_abi = { "auto", NULL };
#define CP_ABI_MAX 8
static struct cp_abi_ops *cp_abis[CP_ABI_MAX];
static int num_cp_abis = 0;
enum ctor_kinds
is_constructor_name (const char *name)
{
if ((current_cp_abi.is_constructor_name) == NULL)
error ("ABI doesn't define required function is_constructor_name");
return (*current_cp_abi.is_constructor_name) (name);
}
enum dtor_kinds
is_destructor_name (const char *name)
{
if ((current_cp_abi.is_destructor_name) == NULL)
error ("ABI doesn't define required function is_destructor_name");
return (*current_cp_abi.is_destructor_name) (name);
}
int
is_vtable_name (const char *name)
{
if ((current_cp_abi.is_vtable_name) == NULL)
error ("ABI doesn't define required function is_vtable_name");
return (*current_cp_abi.is_vtable_name) (name);
}
int
is_operator_name (const char *name)
{
if ((current_cp_abi.is_operator_name) == NULL)
error ("ABI doesn't define required function is_operator_name");
return (*current_cp_abi.is_operator_name) (name);
}
int
baseclass_offset (struct type *type, int index, char *valaddr,
CORE_ADDR address)
{
if (current_cp_abi.baseclass_offset == NULL)
error ("ABI doesn't define required function baseclass_offset");
return (*current_cp_abi.baseclass_offset) (type, index, valaddr, address);
}
struct value *
value_virtual_fn_field (struct value **arg1p, struct fn_field *f, int j,
struct type *type, int offset)
{
if ((current_cp_abi.virtual_fn_field) == NULL)
return NULL;
return (*current_cp_abi.virtual_fn_field) (arg1p, f, j, type, offset);
}
struct type *
value_rtti_type (struct value *v, int *full, int *top, int *using_enc)
{
if ((current_cp_abi.rtti_type) == NULL)
return NULL;
return (*current_cp_abi.rtti_type) (v, full, top, using_enc);
}
/* Set the current C++ ABI to SHORT_NAME. */
static int
switch_to_cp_abi (const char *short_name)
{
struct cp_abi_ops *abi;
abi = find_cp_abi (short_name);
if (abi == NULL)
return 0;
current_cp_abi = *abi;
return 1;
}
/* Add ABI to the list of supported C++ ABI's. */
int
register_cp_abi (struct cp_abi_ops *abi)
{
if (num_cp_abis == CP_ABI_MAX)
internal_error (__FILE__, __LINE__,
"Too many C++ ABIs, please increase CP_ABI_MAX in cp-abi.c");
cp_abis[num_cp_abis++] = abi;
return 1;
}
/* Set the ABI to use in "auto" mode to SHORT_NAME. */
void
set_cp_abi_as_auto_default (const char *short_name)
{
char *new_longname, *new_doc;
struct cp_abi_ops *abi = find_cp_abi (short_name);
if (abi == NULL)
internal_error (__FILE__, __LINE__,
"Cannot find C++ ABI \"%s\" to set it as auto default.",
short_name);
if (auto_cp_abi.longname != NULL)
xfree ((char *) auto_cp_abi.longname);
if (auto_cp_abi.doc != NULL)
xfree ((char *) auto_cp_abi.doc);
auto_cp_abi = *abi;
auto_cp_abi.shortname = "auto";
new_longname = xmalloc (strlen ("currently ") + 1 + strlen (abi->shortname)
+ 1 + 1);
sprintf (new_longname, "currently \"%s\"", abi->shortname);
auto_cp_abi.longname = new_longname;
new_doc = xmalloc (strlen ("Automatically selected; currently ")
+ 1 + strlen (abi->shortname) + 1 + 1);
sprintf (new_doc, "Automatically selected; currently \"%s\"", abi->shortname);
auto_cp_abi.doc = new_doc;
/* Since we copy the current ABI into current_cp_abi instead of
using a pointer, if auto is currently the default, we need to
reset it. */
if (strcmp (current_cp_abi.shortname, "auto") == 0)
switch_to_cp_abi ("auto");
}
/* Return the ABI operations associated with SHORT_NAME. */
static struct cp_abi_ops *
find_cp_abi (const char *short_name)
{
int i;
for (i = 0; i < num_cp_abis; i++)
if (strcmp (cp_abis[i]->shortname, short_name) == 0)
return cp_abis[i];
return NULL;
}
/* Display the list of registered C++ ABIs. */
static void
list_cp_abis (int from_tty)
{
struct cleanup *cleanup_chain;
int i;
ui_out_text (uiout, "The available C++ ABIs are:\n");
cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "cp-abi-list");
for (i = 0; i < num_cp_abis; i++)
{
char pad[14];
int padcount;
ui_out_text (uiout, " ");
ui_out_field_string (uiout, "cp-abi", cp_abis[i]->shortname);
padcount = 16 - 2 - strlen (cp_abis[i]->shortname);
pad[padcount] = 0;
while (padcount > 0)
pad[--padcount] = ' ';
ui_out_text (uiout, pad);
ui_out_field_string (uiout, "doc", cp_abis[i]->doc);
ui_out_text (uiout, "\n");
}
do_cleanups (cleanup_chain);
}
/* Set the current C++ ABI, or display the list of options if no
argument is given. */
static void
set_cp_abi_cmd (char *args, int from_tty)
{
if (args == NULL)
{
list_cp_abis (from_tty);
return;
}
if (!switch_to_cp_abi (args))
error ("Could not find \"%s\" in ABI list", args);
}
/* Show the currently selected C++ ABI. */
static void
show_cp_abi_cmd (char *args, int from_tty)
{
ui_out_text (uiout, "The currently selected C++ ABI is \"");
ui_out_field_string (uiout, "cp-abi", current_cp_abi.shortname);
ui_out_text (uiout, "\" (");
ui_out_field_string (uiout, "longname", current_cp_abi.longname);
ui_out_text (uiout, ").\n");
}
extern initialize_file_ftype _initialize_cp_abi; /* -Wmissing-prototypes */
void
_initialize_cp_abi (void)
{
register_cp_abi (&auto_cp_abi);
switch_to_cp_abi ("auto");
add_cmd ("cp-abi", class_obscure, set_cp_abi_cmd,
"Set the ABI used for inspecting C++ objects.\n"
"\"set cp-abi\" with no arguments will list the available ABIs.",
&setlist);
add_cmd ("cp-abi", class_obscure, show_cp_abi_cmd,
"Show the ABI used for inspecting C++ objects.", &showlist);
}
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