/*

  Copyright (C) 2014-2014 David Anderson. All Rights Reserved.

  This program is free software; you can redistribute it and/or modify it

  under the terms of version 2.1 of the GNU Lesser General Public License

  as published by the Free Software Foundation.

  This program is distributed in the hope that it would be useful, but

  WITHOUT ANY WARRANTY; without even the implied warranty of

  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

  Further, this software is distributed without any warranty that it is

  free of the rightful claim of any third person regarding infringement

  or the like.  Any license provided herein, whether implied or

  otherwise, applies only to this software file.  Patent licenses, if

  any, provided herein do not apply to combinations of this program with

  other software, or any other product whatsoever.

  You should have received a copy of the GNU Lesser General Public

  License along with this program; if not, write the Free Software

  Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston MA 02110-1301,

  USA.

*/

/*  The following is based on

    The gdb online documentation at

    https://sourceware.org/gdb/onlinedocs/gdb/

    Appendix J, ".gdb_index section format".

*/

/*  These are the two types .gdb_index uses.

    the offset_type (32 bits) and other fields

    defined 64 bits.   We use our own Dwarf_Unsigned

    for all the interfaces, these are just for reading

    the section data.

    The section data is defined to be in little-endian regardless of

    the target machine.

    We use our host endianness in all interfaces.

    We simply assume unsigned int is 32 bits FIXME.

*/

typedef __uint32_t gdbindex_offset_type;

typedef Dwarf_Unsigned gdbindex_64;

enum gdbindex_type_e {

   git_unknown,

   git_std,

   git_address,

   git_cuvec

};

struct Dwarf_Gdbindex_array_instance_s {

    Dwarf_Small *  dg_base;

    Dwarf_Unsigned dg_count;

    /* the in_object struct size. */

    Dwarf_Unsigned dg_entry_length;

    /* The size of a single field in the in-object struct */

    int            dg_fieldlen;

    /* The address_area type is a bit irregular. */

    enum gdbindex_type_e dg_type;

};

struct Dwarf_Gdbindex_s {

    Dwarf_Debug      gi_dbg;

    Dwarf_Small    * gi_section_data;

    Dwarf_Unsigned   gi_section_length;

    Dwarf_Unsigned   gi_version;

    Dwarf_Unsigned   gi_cu_list_offset;

    Dwarf_Unsigned   gi_types_cu_list_offset;

    Dwarf_Unsigned   gi_address_area_offset;

    Dwarf_Unsigned   gi_symbol_table_offset;

    Dwarf_Unsigned   gi_constant_pool_offset;

    struct Dwarf_Gdbindex_array_instance_s  gi_culisthdr;

    struct Dwarf_Gdbindex_array_instance_s  gi_typesculisthdr;

    struct Dwarf_Gdbindex_array_instance_s  gi_addressareahdr;

    struct Dwarf_Gdbindex_array_instance_s  gi_symboltablehdr;

    struct Dwarf_Gdbindex_array_instance_s  gi_cuvectorhdr;

    Dwarf_Small *    gi_string_pool;

};