contrib/elftoolchain/libdwarf/dwarf_pro_die.c

   1 /*-
   2  * Copyright (c) 2009 Kai Wang
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 #include "_libdwarf.h"
  28
  29 ELFTC_VCSID("$Id: dwarf_pro_die.c 2074 2011-10-27 03:34:33Z jkoshy $");
  30
  31 Dwarf_Unsigned
  32 dwarf_add_die_to_debug(Dwarf_P_Debug dbg, Dwarf_P_Die first_die,
  33     Dwarf_Error *error)
  34 {
  35
  36         if (dbg == NULL || first_die == NULL) {
  37                 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
  38                 return (DW_DLV_NOCOUNT);
  39         }
  40
  41         dbg->dbgp_root_die = first_die;
  42
  43         return (DW_DLV_OK);
  44 }
  45
  46 Dwarf_P_Die
  47 dwarf_new_die(Dwarf_P_Debug dbg, Dwarf_Tag new_tag,
  48     Dwarf_P_Die parent, Dwarf_P_Die child, Dwarf_P_Die left_sibling,
  49     Dwarf_P_Die right_sibling, Dwarf_Error *error)
  50 {
  51         Dwarf_P_Die die;
  52         int count;
  53
  54         if (dbg == NULL) {
  55                 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
  56                 return (DW_DLV_BADADDR);
  57         }
  58
  59         count = _dwarf_die_count_links(parent, child, left_sibling,
  60             right_sibling);
  61
  62         if (count > 1) {
  63                 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
  64                 return (DW_DLV_BADADDR);
  65         }
  66
  67         if (_dwarf_die_alloc(dbg, &die, error) != DW_DLE_NONE)
  68                 return (DW_DLV_BADADDR);
  69
  70         die->die_dbg = dbg;
  71         die->die_tag = new_tag;
  72
  73         STAILQ_INSERT_TAIL(&dbg->dbgp_dielist, die, die_pro_next);
  74
  75         if (count == 0)
  76                 return (die);
  77
  78         _dwarf_die_link(die, parent, child, left_sibling, right_sibling);
  79
  80         return (die);
  81 }
  82
  83 Dwarf_P_Die
  84 dwarf_die_link(Dwarf_P_Die die, Dwarf_P_Die parent,
  85     Dwarf_P_Die child, Dwarf_P_Die left_sibling, Dwarf_P_Die right_sibling,
  86     Dwarf_Error *error)
  87 {
  88         Dwarf_Debug dbg;
  89         int count;
  90
  91
  92         if (die == NULL) {
  93                 DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
  94                 return (DW_DLV_BADADDR);
  95         }
  96
  97         dbg = die->die_dbg;
  98         count = _dwarf_die_count_links(parent, child, left_sibling,
  99             right_sibling);
 100
 101         if (count > 1) {
 102                 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
 103                 return (DW_DLV_BADADDR);
 104         } else if (count == 0)
 105                 return (die);
 106
 107         _dwarf_die_link(die, parent, child, left_sibling, right_sibling);
 108
 109         return (die);
 110 }