/* Support for printing C++ values for GDB, the GNU debugger.
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/* Support for printing C++ values for GDB, the GNU debugger.
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Copyright (C) 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
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Copyright (C) 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
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2000, 2001, 2002, 2003, 2005, 2006, 2007, 2008, 2009, 2010
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2000, 2001, 2002, 2003, 2005, 2006, 2007, 2008, 2009, 2010
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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This file is part of GDB.
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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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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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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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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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(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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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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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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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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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "defs.h"
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#include "gdb_obstack.h"
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#include "gdb_obstack.h"
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#include "symtab.h"
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "gdbtypes.h"
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#include "expression.h"
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#include "expression.h"
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#include "value.h"
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#include "value.h"
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#include "command.h"
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#include "command.h"
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#include "gdbcmd.h"
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#include "gdbcmd.h"
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#include "demangle.h"
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#include "demangle.h"
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#include "annotate.h"
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#include "annotate.h"
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#include "gdb_string.h"
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#include "gdb_string.h"
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#include "c-lang.h"
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#include "c-lang.h"
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#include "target.h"
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#include "target.h"
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#include "cp-abi.h"
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#include "cp-abi.h"
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#include "valprint.h"
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#include "valprint.h"
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#include "cp-support.h"
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#include "cp-support.h"
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#include "language.h"
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#include "language.h"
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#include "python/python.h"
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#include "python/python.h"
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/* Controls printing of vtbl's */
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/* Controls printing of vtbl's */
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static void
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static void
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show_vtblprint (struct ui_file *file, int from_tty,
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show_vtblprint (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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struct cmd_list_element *c, const char *value)
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{
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{
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fprintf_filtered (file, _("\
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fprintf_filtered (file, _("\
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Printing of C++ virtual function tables is %s.\n"),
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Printing of C++ virtual function tables is %s.\n"),
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value);
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value);
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}
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}
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/* Controls looking up an object's derived type using what we find in
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/* Controls looking up an object's derived type using what we find in
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its vtables. */
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its vtables. */
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static void
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static void
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show_objectprint (struct ui_file *file, int from_tty,
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show_objectprint (struct ui_file *file, int from_tty,
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struct cmd_list_element *c,
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struct cmd_list_element *c,
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const char *value)
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const char *value)
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{
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{
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fprintf_filtered (file, _("\
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fprintf_filtered (file, _("\
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Printing of object's derived type based on vtable info is %s.\n"),
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Printing of object's derived type based on vtable info is %s.\n"),
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value);
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value);
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}
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}
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static void
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static void
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show_static_field_print (struct ui_file *file, int from_tty,
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show_static_field_print (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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struct cmd_list_element *c, const char *value)
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{
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{
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fprintf_filtered (file, _("Printing of C++ static members is %s.\n"),
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fprintf_filtered (file, _("Printing of C++ static members is %s.\n"),
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value);
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value);
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}
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}
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static struct obstack dont_print_vb_obstack;
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static struct obstack dont_print_vb_obstack;
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static struct obstack dont_print_statmem_obstack;
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static struct obstack dont_print_statmem_obstack;
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extern void _initialize_cp_valprint (void);
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extern void _initialize_cp_valprint (void);
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static void cp_print_static_field (struct type *, struct value *,
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static void cp_print_static_field (struct type *, struct value *,
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struct ui_file *, int,
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struct ui_file *, int,
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const struct value_print_options *);
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const struct value_print_options *);
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static void cp_print_value (struct type *, struct type *, const gdb_byte *,
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static void cp_print_value (struct type *, struct type *, const gdb_byte *,
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int, CORE_ADDR, struct ui_file *, int,
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int, CORE_ADDR, struct ui_file *, int,
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const struct value_print_options *, struct type **);
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const struct value_print_options *, struct type **);
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/* GCC versions after 2.4.5 use this. */
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/* GCC versions after 2.4.5 use this. */
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const char vtbl_ptr_name[] = "__vtbl_ptr_type";
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const char vtbl_ptr_name[] = "__vtbl_ptr_type";
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/* Return truth value for assertion that TYPE is of the type
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/* Return truth value for assertion that TYPE is of the type
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"pointer to virtual function". */
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"pointer to virtual function". */
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int
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int
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cp_is_vtbl_ptr_type (struct type *type)
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cp_is_vtbl_ptr_type (struct type *type)
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{
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{
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char *typename = type_name_no_tag (type);
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char *typename = type_name_no_tag (type);
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return (typename != NULL && !strcmp (typename, vtbl_ptr_name));
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return (typename != NULL && !strcmp (typename, vtbl_ptr_name));
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}
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}
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/* Return truth value for the assertion that TYPE is of the type
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/* Return truth value for the assertion that TYPE is of the type
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"pointer to virtual function table". */
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"pointer to virtual function table". */
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int
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int
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cp_is_vtbl_member (struct type *type)
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cp_is_vtbl_member (struct type *type)
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{
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{
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/* With older versions of g++, the vtbl field pointed to an array
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/* With older versions of g++, the vtbl field pointed to an array
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of structures. Nowadays it points directly to the structure. */
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of structures. Nowadays it points directly to the structure. */
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if (TYPE_CODE (type) == TYPE_CODE_PTR)
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if (TYPE_CODE (type) == TYPE_CODE_PTR)
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{
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{
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type = TYPE_TARGET_TYPE (type);
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type = TYPE_TARGET_TYPE (type);
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if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
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if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
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{
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{
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type = TYPE_TARGET_TYPE (type);
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type = TYPE_TARGET_TYPE (type);
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if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */
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if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */
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|| TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */
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|| TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */
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{
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{
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/* Virtual functions tables are full of pointers
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/* Virtual functions tables are full of pointers
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to virtual functions. */
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to virtual functions. */
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return cp_is_vtbl_ptr_type (type);
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return cp_is_vtbl_ptr_type (type);
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}
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}
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}
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}
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else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) /* if not using thunks */
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else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) /* if not using thunks */
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{
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{
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return cp_is_vtbl_ptr_type (type);
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return cp_is_vtbl_ptr_type (type);
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}
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}
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else if (TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */
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else if (TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */
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{
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{
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/* The type name of the thunk pointer is NULL when using dwarf2.
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/* The type name of the thunk pointer is NULL when using dwarf2.
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We could test for a pointer to a function, but there is
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We could test for a pointer to a function, but there is
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no type info for the virtual table either, so it wont help. */
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no type info for the virtual table either, so it wont help. */
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return cp_is_vtbl_ptr_type (type);
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return cp_is_vtbl_ptr_type (type);
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}
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}
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}
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}
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return 0;
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return 0;
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}
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}
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/* Mutually recursive subroutines of cp_print_value and c_val_print to
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/* Mutually recursive subroutines of cp_print_value and c_val_print to
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print out a structure's fields: cp_print_value_fields and cp_print_value.
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print out a structure's fields: cp_print_value_fields and cp_print_value.
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TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and OPTIONS have the
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TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and OPTIONS have the
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same meanings as in cp_print_value and c_val_print.
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same meanings as in cp_print_value and c_val_print.
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2nd argument REAL_TYPE is used to carry over the type of the derived
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2nd argument REAL_TYPE is used to carry over the type of the derived
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class across the recursion to base classes.
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class across the recursion to base classes.
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DONT_PRINT is an array of baseclass types that we
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DONT_PRINT is an array of baseclass types that we
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should not print, or zero if called from top level. */
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should not print, or zero if called from top level. */
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void
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void
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cp_print_value_fields (struct type *type, struct type *real_type,
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cp_print_value_fields (struct type *type, struct type *real_type,
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const gdb_byte *valaddr, int offset, CORE_ADDR address,
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const gdb_byte *valaddr, int offset, CORE_ADDR address,
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struct ui_file *stream, int recurse,
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struct ui_file *stream, int recurse,
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const struct value_print_options *options,
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const struct value_print_options *options,
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struct type **dont_print_vb, int dont_print_statmem)
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struct type **dont_print_vb, int dont_print_statmem)
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{
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{
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int i, len, n_baseclasses;
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int i, len, n_baseclasses;
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int fields_seen = 0;
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int fields_seen = 0;
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CHECK_TYPEDEF (type);
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CHECK_TYPEDEF (type);
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if (recurse == 0
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if (recurse == 0
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&& obstack_object_size (&dont_print_statmem_obstack) > 0)
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&& obstack_object_size (&dont_print_statmem_obstack) > 0)
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obstack_free (&dont_print_statmem_obstack, NULL);
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obstack_free (&dont_print_statmem_obstack, NULL);
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fprintf_filtered (stream, "{");
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fprintf_filtered (stream, "{");
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len = TYPE_NFIELDS (type);
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len = TYPE_NFIELDS (type);
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n_baseclasses = TYPE_N_BASECLASSES (type);
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n_baseclasses = TYPE_N_BASECLASSES (type);
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/* First, print out baseclasses such that we don't print
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/* First, print out baseclasses such that we don't print
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duplicates of virtual baseclasses. */
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duplicates of virtual baseclasses. */
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if (n_baseclasses > 0)
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if (n_baseclasses > 0)
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cp_print_value (type, real_type, valaddr, offset, address, stream,
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cp_print_value (type, real_type, valaddr, offset, address, stream,
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recurse + 1, options, dont_print_vb);
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recurse + 1, options, dont_print_vb);
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/* Second, print out data fields */
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/* Second, print out data fields */
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/* If there are no data fields, skip this part */
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/* If there are no data fields, skip this part */
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if (len == n_baseclasses || !len)
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if (len == n_baseclasses || !len)
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fprintf_filtered (stream, "<No data fields>");
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fprintf_filtered (stream, "<No data fields>");
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else
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else
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{
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{
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void *statmem_obstack_top = NULL;
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void *statmem_obstack_top = NULL;
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if (dont_print_statmem == 0)
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if (dont_print_statmem == 0)
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{
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{
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/* Set the current printed-statics stack top. */
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/* Set the current printed-statics stack top. */
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statmem_obstack_top
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statmem_obstack_top
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= obstack_next_free (&dont_print_statmem_obstack);
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= obstack_next_free (&dont_print_statmem_obstack);
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}
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}
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for (i = n_baseclasses; i < len; i++)
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for (i = n_baseclasses; i < len; i++)
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{
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{
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/* If requested, skip printing of static fields. */
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/* If requested, skip printing of static fields. */
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if (!options->static_field_print
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if (!options->static_field_print
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&& field_is_static (&TYPE_FIELD (type, i)))
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&& field_is_static (&TYPE_FIELD (type, i)))
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continue;
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continue;
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if (fields_seen)
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if (fields_seen)
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fprintf_filtered (stream, ", ");
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fprintf_filtered (stream, ", ");
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else if (n_baseclasses > 0)
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else if (n_baseclasses > 0)
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{
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{
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if (options->pretty)
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if (options->pretty)
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{
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{
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fprintf_filtered (stream, "\n");
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fprintf_filtered (stream, "\n");
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print_spaces_filtered (2 + 2 * recurse, stream);
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print_spaces_filtered (2 + 2 * recurse, stream);
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fputs_filtered ("members of ", stream);
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fputs_filtered ("members of ", stream);
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fputs_filtered (type_name_no_tag (type), stream);
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fputs_filtered (type_name_no_tag (type), stream);
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fputs_filtered (": ", stream);
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fputs_filtered (": ", stream);
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}
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}
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}
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}
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fields_seen = 1;
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fields_seen = 1;
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|
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if (options->pretty)
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if (options->pretty)
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{
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{
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fprintf_filtered (stream, "\n");
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fprintf_filtered (stream, "\n");
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print_spaces_filtered (2 + 2 * recurse, stream);
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print_spaces_filtered (2 + 2 * recurse, stream);
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}
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}
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else
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else
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{
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{
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wrap_here (n_spaces (2 + 2 * recurse));
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wrap_here (n_spaces (2 + 2 * recurse));
|
}
|
}
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if (options->inspect_it)
|
if (options->inspect_it)
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{
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{
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if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR)
|
if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR)
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fputs_filtered ("\"( ptr \"", stream);
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fputs_filtered ("\"( ptr \"", stream);
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else
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else
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fputs_filtered ("\"( nodef \"", stream);
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fputs_filtered ("\"( nodef \"", stream);
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if (field_is_static (&TYPE_FIELD (type, i)))
|
if (field_is_static (&TYPE_FIELD (type, i)))
|
fputs_filtered ("static ", stream);
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fputs_filtered ("static ", stream);
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fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
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fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
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current_language->la_language,
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current_language->la_language,
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DMGL_PARAMS | DMGL_ANSI);
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DMGL_PARAMS | DMGL_ANSI);
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fputs_filtered ("\" \"", stream);
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fputs_filtered ("\" \"", stream);
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fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
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fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
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current_language->la_language,
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current_language->la_language,
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DMGL_PARAMS | DMGL_ANSI);
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DMGL_PARAMS | DMGL_ANSI);
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fputs_filtered ("\") \"", stream);
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fputs_filtered ("\") \"", stream);
|
}
|
}
|
else
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else
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{
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{
|
annotate_field_begin (TYPE_FIELD_TYPE (type, i));
|
annotate_field_begin (TYPE_FIELD_TYPE (type, i));
|
|
|
if (field_is_static (&TYPE_FIELD (type, i)))
|
if (field_is_static (&TYPE_FIELD (type, i)))
|
fputs_filtered ("static ", stream);
|
fputs_filtered ("static ", stream);
|
fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
|
fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
|
current_language->la_language,
|
current_language->la_language,
|
DMGL_PARAMS | DMGL_ANSI);
|
DMGL_PARAMS | DMGL_ANSI);
|
annotate_field_name_end ();
|
annotate_field_name_end ();
|
/* do not print leading '=' in case of anonymous unions */
|
/* do not print leading '=' in case of anonymous unions */
|
if (strcmp (TYPE_FIELD_NAME (type, i), ""))
|
if (strcmp (TYPE_FIELD_NAME (type, i), ""))
|
fputs_filtered (" = ", stream);
|
fputs_filtered (" = ", stream);
|
annotate_field_value ();
|
annotate_field_value ();
|
}
|
}
|
|
|
if (!field_is_static (&TYPE_FIELD (type, i))
|
if (!field_is_static (&TYPE_FIELD (type, i))
|
&& TYPE_FIELD_PACKED (type, i))
|
&& TYPE_FIELD_PACKED (type, i))
|
{
|
{
|
struct value *v;
|
struct value *v;
|
|
|
/* Bitfields require special handling, especially due to byte
|
/* Bitfields require special handling, especially due to byte
|
order problems. */
|
order problems. */
|
if (TYPE_FIELD_IGNORE (type, i))
|
if (TYPE_FIELD_IGNORE (type, i))
|
{
|
{
|
fputs_filtered ("<optimized out or zero length>", stream);
|
fputs_filtered ("<optimized out or zero length>", stream);
|
}
|
}
|
else
|
else
|
{
|
{
|
struct value_print_options opts = *options;
|
struct value_print_options opts = *options;
|
opts.deref_ref = 0;
|
opts.deref_ref = 0;
|
v = value_from_longest
|
v = value_from_longest
|
(TYPE_FIELD_TYPE (type, i),
|
(TYPE_FIELD_TYPE (type, i),
|
unpack_field_as_long (type, valaddr + offset, i));
|
unpack_field_as_long (type, valaddr + offset, i));
|
|
|
common_val_print (v, stream, recurse + 1, &opts,
|
common_val_print (v, stream, recurse + 1, &opts,
|
current_language);
|
current_language);
|
}
|
}
|
}
|
}
|
else
|
else
|
{
|
{
|
if (TYPE_FIELD_IGNORE (type, i))
|
if (TYPE_FIELD_IGNORE (type, i))
|
{
|
{
|
fputs_filtered ("<optimized out or zero length>", stream);
|
fputs_filtered ("<optimized out or zero length>", stream);
|
}
|
}
|
else if (field_is_static (&TYPE_FIELD (type, i)))
|
else if (field_is_static (&TYPE_FIELD (type, i)))
|
{
|
{
|
struct value *v = value_static_field (type, i);
|
struct value *v = value_static_field (type, i);
|
if (v == NULL)
|
if (v == NULL)
|
fputs_filtered ("<optimized out>", stream);
|
fputs_filtered ("<optimized out>", stream);
|
else
|
else
|
cp_print_static_field (TYPE_FIELD_TYPE (type, i), v,
|
cp_print_static_field (TYPE_FIELD_TYPE (type, i), v,
|
stream, recurse + 1, options);
|
stream, recurse + 1, options);
|
}
|
}
|
else
|
else
|
{
|
{
|
struct value_print_options opts = *options;
|
struct value_print_options opts = *options;
|
opts.deref_ref = 0;
|
opts.deref_ref = 0;
|
val_print (TYPE_FIELD_TYPE (type, i),
|
val_print (TYPE_FIELD_TYPE (type, i),
|
valaddr, offset + TYPE_FIELD_BITPOS (type, i) / 8,
|
valaddr, offset + TYPE_FIELD_BITPOS (type, i) / 8,
|
address,
|
address,
|
stream, recurse + 1, &opts,
|
stream, recurse + 1, &opts,
|
current_language);
|
current_language);
|
}
|
}
|
}
|
}
|
annotate_field_end ();
|
annotate_field_end ();
|
}
|
}
|
|
|
if (dont_print_statmem == 0)
|
if (dont_print_statmem == 0)
|
{
|
{
|
/* In effect, a pop of the printed-statics stack. */
|
/* In effect, a pop of the printed-statics stack. */
|
if (obstack_object_size (&dont_print_statmem_obstack) > 0)
|
if (obstack_object_size (&dont_print_statmem_obstack) > 0)
|
obstack_free (&dont_print_statmem_obstack, statmem_obstack_top);
|
obstack_free (&dont_print_statmem_obstack, statmem_obstack_top);
|
}
|
}
|
|
|
if (options->pretty)
|
if (options->pretty)
|
{
|
{
|
fprintf_filtered (stream, "\n");
|
fprintf_filtered (stream, "\n");
|
print_spaces_filtered (2 * recurse, stream);
|
print_spaces_filtered (2 * recurse, stream);
|
}
|
}
|
} /* if there are data fields */
|
} /* if there are data fields */
|
|
|
fprintf_filtered (stream, "}");
|
fprintf_filtered (stream, "}");
|
}
|
}
|
|
|
/* Like cp_print_value_fields, but find the runtime type of the object
|
/* Like cp_print_value_fields, but find the runtime type of the object
|
and pass it as the `real_type' argument to cp_print_value_fields.
|
and pass it as the `real_type' argument to cp_print_value_fields.
|
This function is a hack to work around the fact that
|
This function is a hack to work around the fact that
|
common_val_print passes the embedded offset to val_print, but not
|
common_val_print passes the embedded offset to val_print, but not
|
the enclosing type. */
|
the enclosing type. */
|
|
|
void
|
void
|
cp_print_value_fields_rtti (struct type *type,
|
cp_print_value_fields_rtti (struct type *type,
|
const gdb_byte *valaddr, int offset,
|
const gdb_byte *valaddr, int offset,
|
CORE_ADDR address,
|
CORE_ADDR address,
|
struct ui_file *stream, int recurse,
|
struct ui_file *stream, int recurse,
|
const struct value_print_options *options,
|
const struct value_print_options *options,
|
struct type **dont_print_vb, int dont_print_statmem)
|
struct type **dont_print_vb, int dont_print_statmem)
|
{
|
{
|
struct value *value;
|
struct value *value;
|
int full, top, using_enc;
|
int full, top, using_enc;
|
struct type *real_type;
|
struct type *real_type;
|
|
|
/* Ugh, we have to convert back to a value here. */
|
/* Ugh, we have to convert back to a value here. */
|
value = value_from_contents_and_address (type, valaddr + offset,
|
value = value_from_contents_and_address (type, valaddr + offset,
|
address + offset);
|
address + offset);
|
/* We don't actually care about most of the result here -- just the
|
/* We don't actually care about most of the result here -- just the
|
type. We already have the correct offset, due to how val_print
|
type. We already have the correct offset, due to how val_print
|
was initially called. */
|
was initially called. */
|
real_type = value_rtti_type (value, &full, &top, &using_enc);
|
real_type = value_rtti_type (value, &full, &top, &using_enc);
|
if (!real_type)
|
if (!real_type)
|
real_type = type;
|
real_type = type;
|
|
|
cp_print_value_fields (type, real_type, valaddr, offset,
|
cp_print_value_fields (type, real_type, valaddr, offset,
|
address, stream, recurse, options,
|
address, stream, recurse, options,
|
dont_print_vb, dont_print_statmem);
|
dont_print_vb, dont_print_statmem);
|
}
|
}
|
|
|
/* Special val_print routine to avoid printing multiple copies of virtual
|
/* Special val_print routine to avoid printing multiple copies of virtual
|
baseclasses. */
|
baseclasses. */
|
|
|
static void
|
static void
|
cp_print_value (struct type *type, struct type *real_type,
|
cp_print_value (struct type *type, struct type *real_type,
|
const gdb_byte *valaddr, int offset, CORE_ADDR address,
|
const gdb_byte *valaddr, int offset, CORE_ADDR address,
|
struct ui_file *stream, int recurse,
|
struct ui_file *stream, int recurse,
|
const struct value_print_options *options,
|
const struct value_print_options *options,
|
struct type **dont_print_vb)
|
struct type **dont_print_vb)
|
{
|
{
|
struct type **last_dont_print
|
struct type **last_dont_print
|
= (struct type **) obstack_next_free (&dont_print_vb_obstack);
|
= (struct type **) obstack_next_free (&dont_print_vb_obstack);
|
struct obstack tmp_obstack = dont_print_vb_obstack;
|
struct obstack tmp_obstack = dont_print_vb_obstack;
|
int i, n_baseclasses = TYPE_N_BASECLASSES (type);
|
int i, n_baseclasses = TYPE_N_BASECLASSES (type);
|
int thisoffset;
|
int thisoffset;
|
struct type *thistype;
|
struct type *thistype;
|
|
|
if (dont_print_vb == 0)
|
if (dont_print_vb == 0)
|
{
|
{
|
/* If we're at top level, carve out a completely fresh
|
/* If we're at top level, carve out a completely fresh
|
chunk of the obstack and use that until this particular
|
chunk of the obstack and use that until this particular
|
invocation returns. */
|
invocation returns. */
|
/* Bump up the high-water mark. Now alpha is omega. */
|
/* Bump up the high-water mark. Now alpha is omega. */
|
obstack_finish (&dont_print_vb_obstack);
|
obstack_finish (&dont_print_vb_obstack);
|
}
|
}
|
|
|
for (i = 0; i < n_baseclasses; i++)
|
for (i = 0; i < n_baseclasses; i++)
|
{
|
{
|
int boffset;
|
int boffset;
|
int skip;
|
int skip;
|
struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
|
struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
|
char *basename = TYPE_NAME (baseclass);
|
char *basename = TYPE_NAME (baseclass);
|
const gdb_byte *base_valaddr;
|
const gdb_byte *base_valaddr;
|
|
|
if (BASETYPE_VIA_VIRTUAL (type, i))
|
if (BASETYPE_VIA_VIRTUAL (type, i))
|
{
|
{
|
struct type **first_dont_print
|
struct type **first_dont_print
|
= (struct type **) obstack_base (&dont_print_vb_obstack);
|
= (struct type **) obstack_base (&dont_print_vb_obstack);
|
|
|
int j = (struct type **) obstack_next_free (&dont_print_vb_obstack)
|
int j = (struct type **) obstack_next_free (&dont_print_vb_obstack)
|
- first_dont_print;
|
- first_dont_print;
|
|
|
while (--j >= 0)
|
while (--j >= 0)
|
if (baseclass == first_dont_print[j])
|
if (baseclass == first_dont_print[j])
|
goto flush_it;
|
goto flush_it;
|
|
|
obstack_ptr_grow (&dont_print_vb_obstack, baseclass);
|
obstack_ptr_grow (&dont_print_vb_obstack, baseclass);
|
}
|
}
|
|
|
thisoffset = offset;
|
thisoffset = offset;
|
thistype = real_type;
|
thistype = real_type;
|
|
|
boffset = baseclass_offset (type, i, valaddr + offset, address + offset);
|
boffset = baseclass_offset (type, i, valaddr + offset, address + offset);
|
skip = ((boffset == -1) || (boffset + offset) < 0) ? 1 : -1;
|
skip = ((boffset == -1) || (boffset + offset) < 0) ? 1 : -1;
|
|
|
if (BASETYPE_VIA_VIRTUAL (type, i))
|
if (BASETYPE_VIA_VIRTUAL (type, i))
|
{
|
{
|
/* The virtual base class pointer might have been
|
/* The virtual base class pointer might have been
|
clobbered by the user program. Make sure that it
|
clobbered by the user program. Make sure that it
|
still points to a valid memory location. */
|
still points to a valid memory location. */
|
|
|
if (boffset != -1
|
if (boffset != -1
|
&& ((boffset + offset) < 0
|
&& ((boffset + offset) < 0
|
|| (boffset + offset) >= TYPE_LENGTH (real_type)))
|
|| (boffset + offset) >= TYPE_LENGTH (real_type)))
|
{
|
{
|
/* FIXME (alloca): unsafe if baseclass is really really large. */
|
/* FIXME (alloca): unsafe if baseclass is really really large. */
|
gdb_byte *buf = alloca (TYPE_LENGTH (baseclass));
|
gdb_byte *buf = alloca (TYPE_LENGTH (baseclass));
|
base_valaddr = buf;
|
base_valaddr = buf;
|
if (target_read_memory (address + boffset, buf,
|
if (target_read_memory (address + boffset, buf,
|
TYPE_LENGTH (baseclass)) != 0)
|
TYPE_LENGTH (baseclass)) != 0)
|
skip = 1;
|
skip = 1;
|
address = address + boffset;
|
address = address + boffset;
|
thisoffset = 0;
|
thisoffset = 0;
|
boffset = 0;
|
boffset = 0;
|
thistype = baseclass;
|
thistype = baseclass;
|
}
|
}
|
else
|
else
|
base_valaddr = valaddr;
|
base_valaddr = valaddr;
|
}
|
}
|
else
|
else
|
base_valaddr = valaddr;
|
base_valaddr = valaddr;
|
|
|
/* now do the printing */
|
/* now do the printing */
|
if (options->pretty)
|
if (options->pretty)
|
{
|
{
|
fprintf_filtered (stream, "\n");
|
fprintf_filtered (stream, "\n");
|
print_spaces_filtered (2 * recurse, stream);
|
print_spaces_filtered (2 * recurse, stream);
|
}
|
}
|
fputs_filtered ("<", stream);
|
fputs_filtered ("<", stream);
|
/* Not sure what the best notation is in the case where there is no
|
/* Not sure what the best notation is in the case where there is no
|
baseclass name. */
|
baseclass name. */
|
fputs_filtered (basename ? basename : "", stream);
|
fputs_filtered (basename ? basename : "", stream);
|
fputs_filtered ("> = ", stream);
|
fputs_filtered ("> = ", stream);
|
|
|
|
|
if (skip >= 1)
|
if (skip >= 1)
|
fprintf_filtered (stream, "<invalid address>");
|
fprintf_filtered (stream, "<invalid address>");
|
else
|
else
|
{
|
{
|
int result = 0;
|
int result = 0;
|
|
|
/* Attempt to run the Python pretty-printers on the
|
/* Attempt to run the Python pretty-printers on the
|
baseclass if possible. */
|
baseclass if possible. */
|
if (!options->raw)
|
if (!options->raw)
|
result = apply_val_pretty_printer (baseclass, base_valaddr,
|
result = apply_val_pretty_printer (baseclass, base_valaddr,
|
thisoffset + boffset,
|
thisoffset + boffset,
|
address,
|
address,
|
stream, recurse,
|
stream, recurse,
|
options,
|
options,
|
current_language);
|
current_language);
|
|
|
if (!result)
|
if (!result)
|
cp_print_value_fields (baseclass, thistype, base_valaddr,
|
cp_print_value_fields (baseclass, thistype, base_valaddr,
|
thisoffset + boffset, address,
|
thisoffset + boffset, address,
|
stream, recurse, options,
|
stream, recurse, options,
|
((struct type **)
|
((struct type **)
|
obstack_base (&dont_print_vb_obstack)),
|
obstack_base (&dont_print_vb_obstack)),
|
0);
|
0);
|
}
|
}
|
fputs_filtered (", ", stream);
|
fputs_filtered (", ", stream);
|
|
|
flush_it:
|
flush_it:
|
;
|
;
|
}
|
}
|
|
|
if (dont_print_vb == 0)
|
if (dont_print_vb == 0)
|
{
|
{
|
/* Free the space used to deal with the printing
|
/* Free the space used to deal with the printing
|
of this type from top level. */
|
of this type from top level. */
|
obstack_free (&dont_print_vb_obstack, last_dont_print);
|
obstack_free (&dont_print_vb_obstack, last_dont_print);
|
/* Reset watermark so that we can continue protecting
|
/* Reset watermark so that we can continue protecting
|
ourselves from whatever we were protecting ourselves. */
|
ourselves from whatever we were protecting ourselves. */
|
dont_print_vb_obstack = tmp_obstack;
|
dont_print_vb_obstack = tmp_obstack;
|
}
|
}
|
}
|
}
|
|
|
/* Print value of a static member.
|
/* Print value of a static member.
|
To avoid infinite recursion when printing a class that contains
|
To avoid infinite recursion when printing a class that contains
|
a static instance of the class, we keep the addresses of all printed
|
a static instance of the class, we keep the addresses of all printed
|
static member classes in an obstack and refuse to print them more
|
static member classes in an obstack and refuse to print them more
|
than once.
|
than once.
|
|
|
VAL contains the value to print, TYPE, STREAM, RECURSE, and OPTIONS
|
VAL contains the value to print, TYPE, STREAM, RECURSE, and OPTIONS
|
have the same meanings as in c_val_print. */
|
have the same meanings as in c_val_print. */
|
|
|
static void
|
static void
|
cp_print_static_field (struct type *type,
|
cp_print_static_field (struct type *type,
|
struct value *val,
|
struct value *val,
|
struct ui_file *stream,
|
struct ui_file *stream,
|
int recurse,
|
int recurse,
|
const struct value_print_options *options)
|
const struct value_print_options *options)
|
{
|
{
|
struct value_print_options opts;
|
struct value_print_options opts;
|
if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
|
if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
|
{
|
{
|
CORE_ADDR *first_dont_print;
|
CORE_ADDR *first_dont_print;
|
CORE_ADDR addr;
|
CORE_ADDR addr;
|
int i;
|
int i;
|
|
|
first_dont_print
|
first_dont_print
|
= (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack);
|
= (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack);
|
i = obstack_object_size (&dont_print_statmem_obstack)
|
i = obstack_object_size (&dont_print_statmem_obstack)
|
/ sizeof (CORE_ADDR);
|
/ sizeof (CORE_ADDR);
|
|
|
while (--i >= 0)
|
while (--i >= 0)
|
{
|
{
|
if (value_address (val) == first_dont_print[i])
|
if (value_address (val) == first_dont_print[i])
|
{
|
{
|
fputs_filtered ("<same as static member of an already"
|
fputs_filtered ("<same as static member of an already"
|
" seen type>",
|
" seen type>",
|
stream);
|
stream);
|
return;
|
return;
|
}
|
}
|
}
|
}
|
|
|
addr = value_address (val);
|
addr = value_address (val);
|
obstack_grow (&dont_print_statmem_obstack, (char *) &addr,
|
obstack_grow (&dont_print_statmem_obstack, (char *) &addr,
|
sizeof (CORE_ADDR));
|
sizeof (CORE_ADDR));
|
|
|
CHECK_TYPEDEF (type);
|
CHECK_TYPEDEF (type);
|
cp_print_value_fields (type, value_enclosing_type (val),
|
cp_print_value_fields (type, value_enclosing_type (val),
|
value_contents_all (val),
|
value_contents_all (val),
|
value_embedded_offset (val), addr,
|
value_embedded_offset (val), addr,
|
stream, recurse, options, NULL, 1);
|
stream, recurse, options, NULL, 1);
|
return;
|
return;
|
}
|
}
|
|
|
opts = *options;
|
opts = *options;
|
opts.deref_ref = 0;
|
opts.deref_ref = 0;
|
val_print (type, value_contents_all (val),
|
val_print (type, value_contents_all (val),
|
value_embedded_offset (val), value_address (val),
|
value_embedded_offset (val), value_address (val),
|
stream, recurse, &opts, current_language);
|
stream, recurse, &opts, current_language);
|
}
|
}
|
|
|
|
|
/* Find the field in *DOMAIN, or its non-virtual base classes, with bit offset
|
/* Find the field in *DOMAIN, or its non-virtual base classes, with bit offset
|
OFFSET. Set *DOMAIN to the containing type and *FIELDNO to the containing
|
OFFSET. Set *DOMAIN to the containing type and *FIELDNO to the containing
|
field number. If OFFSET is not exactly at the start of some field, set
|
field number. If OFFSET is not exactly at the start of some field, set
|
*DOMAIN to NULL. */
|
*DOMAIN to NULL. */
|
|
|
static void
|
static void
|
cp_find_class_member (struct type **domain_p, int *fieldno,
|
cp_find_class_member (struct type **domain_p, int *fieldno,
|
LONGEST offset)
|
LONGEST offset)
|
{
|
{
|
struct type *domain;
|
struct type *domain;
|
unsigned int i;
|
unsigned int i;
|
unsigned len;
|
unsigned len;
|
|
|
*domain_p = check_typedef (*domain_p);
|
*domain_p = check_typedef (*domain_p);
|
domain = *domain_p;
|
domain = *domain_p;
|
len = TYPE_NFIELDS (domain);
|
len = TYPE_NFIELDS (domain);
|
|
|
for (i = TYPE_N_BASECLASSES (domain); i < len; i++)
|
for (i = TYPE_N_BASECLASSES (domain); i < len; i++)
|
{
|
{
|
LONGEST bitpos = TYPE_FIELD_BITPOS (domain, i);
|
LONGEST bitpos = TYPE_FIELD_BITPOS (domain, i);
|
|
|
QUIT;
|
QUIT;
|
if (offset == bitpos)
|
if (offset == bitpos)
|
{
|
{
|
*fieldno = i;
|
*fieldno = i;
|
return;
|
return;
|
}
|
}
|
}
|
}
|
|
|
for (i = 0; i < TYPE_N_BASECLASSES (domain); i++)
|
for (i = 0; i < TYPE_N_BASECLASSES (domain); i++)
|
{
|
{
|
LONGEST bitpos = TYPE_FIELD_BITPOS (domain, i);
|
LONGEST bitpos = TYPE_FIELD_BITPOS (domain, i);
|
LONGEST bitsize = 8 * TYPE_LENGTH (TYPE_FIELD_TYPE (domain, i));
|
LONGEST bitsize = 8 * TYPE_LENGTH (TYPE_FIELD_TYPE (domain, i));
|
|
|
if (offset >= bitpos && offset < bitpos + bitsize)
|
if (offset >= bitpos && offset < bitpos + bitsize)
|
{
|
{
|
*domain_p = TYPE_FIELD_TYPE (domain, i);
|
*domain_p = TYPE_FIELD_TYPE (domain, i);
|
cp_find_class_member (domain_p, fieldno, offset - bitpos);
|
cp_find_class_member (domain_p, fieldno, offset - bitpos);
|
return;
|
return;
|
}
|
}
|
}
|
}
|
|
|
*domain_p = NULL;
|
*domain_p = NULL;
|
}
|
}
|
|
|
void
|
void
|
cp_print_class_member (const gdb_byte *valaddr, struct type *type,
|
cp_print_class_member (const gdb_byte *valaddr, struct type *type,
|
struct ui_file *stream, char *prefix)
|
struct ui_file *stream, char *prefix)
|
{
|
{
|
enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
|
enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
|
|
|
/* VAL is a byte offset into the structure type DOMAIN.
|
/* VAL is a byte offset into the structure type DOMAIN.
|
Find the name of the field for that offset and
|
Find the name of the field for that offset and
|
print it. */
|
print it. */
|
struct type *domain = TYPE_DOMAIN_TYPE (type);
|
struct type *domain = TYPE_DOMAIN_TYPE (type);
|
LONGEST val;
|
LONGEST val;
|
unsigned int fieldno;
|
unsigned int fieldno;
|
|
|
val = extract_signed_integer (valaddr, TYPE_LENGTH (type), byte_order);
|
val = extract_signed_integer (valaddr, TYPE_LENGTH (type), byte_order);
|
|
|
/* Pointers to data members are usually byte offsets into an object.
|
/* Pointers to data members are usually byte offsets into an object.
|
Because a data member can have offset zero, and a NULL pointer to
|
Because a data member can have offset zero, and a NULL pointer to
|
member must be distinct from any valid non-NULL pointer to
|
member must be distinct from any valid non-NULL pointer to
|
member, either the value is biased or the NULL value has a
|
member, either the value is biased or the NULL value has a
|
special representation; both are permitted by ISO C++. HP aCC
|
special representation; both are permitted by ISO C++. HP aCC
|
used a bias of 0x20000000; HP cfront used a bias of 1; g++ 3.x
|
used a bias of 0x20000000; HP cfront used a bias of 1; g++ 3.x
|
and other compilers which use the Itanium ABI use -1 as the NULL
|
and other compilers which use the Itanium ABI use -1 as the NULL
|
value. GDB only supports that last form; to add support for
|
value. GDB only supports that last form; to add support for
|
another form, make this into a cp-abi hook. */
|
another form, make this into a cp-abi hook. */
|
|
|
if (val == -1)
|
if (val == -1)
|
{
|
{
|
fprintf_filtered (stream, "NULL");
|
fprintf_filtered (stream, "NULL");
|
return;
|
return;
|
}
|
}
|
|
|
cp_find_class_member (&domain, &fieldno, val << 3);
|
cp_find_class_member (&domain, &fieldno, val << 3);
|
|
|
if (domain != NULL)
|
if (domain != NULL)
|
{
|
{
|
char *name;
|
char *name;
|
fputs_filtered (prefix, stream);
|
fputs_filtered (prefix, stream);
|
name = type_name_no_tag (domain);
|
name = type_name_no_tag (domain);
|
if (name)
|
if (name)
|
fputs_filtered (name, stream);
|
fputs_filtered (name, stream);
|
else
|
else
|
c_type_print_base (domain, stream, 0, 0);
|
c_type_print_base (domain, stream, 0, 0);
|
fprintf_filtered (stream, "::");
|
fprintf_filtered (stream, "::");
|
fputs_filtered (TYPE_FIELD_NAME (domain, fieldno), stream);
|
fputs_filtered (TYPE_FIELD_NAME (domain, fieldno), stream);
|
}
|
}
|
else
|
else
|
fprintf_filtered (stream, "%ld", (long) val);
|
fprintf_filtered (stream, "%ld", (long) val);
|
}
|
}
|
|
|
|
|
void
|
void
|
_initialize_cp_valprint (void)
|
_initialize_cp_valprint (void)
|
{
|
{
|
add_setshow_boolean_cmd ("static-members", class_support,
|
add_setshow_boolean_cmd ("static-members", class_support,
|
&user_print_options.static_field_print, _("\
|
&user_print_options.static_field_print, _("\
|
Set printing of C++ static members."), _("\
|
Set printing of C++ static members."), _("\
|
Show printing of C++ static members."), NULL,
|
Show printing of C++ static members."), NULL,
|
NULL,
|
NULL,
|
show_static_field_print,
|
show_static_field_print,
|
&setprintlist, &showprintlist);
|
&setprintlist, &showprintlist);
|
|
|
add_setshow_boolean_cmd ("vtbl", class_support,
|
add_setshow_boolean_cmd ("vtbl", class_support,
|
&user_print_options.vtblprint, _("\
|
&user_print_options.vtblprint, _("\
|
Set printing of C++ virtual function tables."), _("\
|
Set printing of C++ virtual function tables."), _("\
|
Show printing of C++ virtual function tables."), NULL,
|
Show printing of C++ virtual function tables."), NULL,
|
NULL,
|
NULL,
|
show_vtblprint,
|
show_vtblprint,
|
&setprintlist, &showprintlist);
|
&setprintlist, &showprintlist);
|
|
|
add_setshow_boolean_cmd ("object", class_support,
|
add_setshow_boolean_cmd ("object", class_support,
|
&user_print_options.objectprint, _("\
|
&user_print_options.objectprint, _("\
|
Set printing of object's derived type based on vtable info."), _("\
|
Set printing of object's derived type based on vtable info."), _("\
|
Show printing of object's derived type based on vtable info."), NULL,
|
Show printing of object's derived type based on vtable info."), NULL,
|
NULL,
|
NULL,
|
show_objectprint,
|
show_objectprint,
|
&setprintlist, &showprintlist);
|
&setprintlist, &showprintlist);
|
|
|
obstack_begin (&dont_print_statmem_obstack, 32 * sizeof (CORE_ADDR));
|
obstack_begin (&dont_print_statmem_obstack, 32 * sizeof (CORE_ADDR));
|
obstack_begin (&dont_print_vb_obstack, 32 * sizeof (struct type *));
|
obstack_begin (&dont_print_vb_obstack, 32 * sizeof (struct type *));
|
}
|
}
|
|
|
