external/bsd/libdwarf/dist/dwarf_finish.c

   1 /*      $NetBSD$        */
   2
   3 /*-
   4  * Copyright (c) 2007 John Birrell (jb@freebsd.org)
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  * $FreeBSD: src/lib/libdwarf/dwarf_finish.c,v 1.1.4.1 2009/08/03 08:13:06 kensmith Exp $
  29  */
  30
  31 #include <stdlib.h>
  32 #include "_libdwarf.h"
  33
  34 int
  35 dwarf_finish(Dwarf_Debug *dbgp, Dwarf_Error *error)
  36 {
  37         Dwarf_Abbrev ab;
  38         Dwarf_Abbrev tab;
  39         Dwarf_Attribute at;
  40         Dwarf_Attribute tat;
  41         Dwarf_AttrValue av;
  42         Dwarf_AttrValue tav;
  43         Dwarf_CU cu;
  44         Dwarf_CU tcu;
  45         Dwarf_Debug dbg;
  46         Dwarf_Die die;
  47         Dwarf_Die tdie;
  48
  49         if (error == NULL)
  50                 /* Can only return a generic error. */
  51                 return DWARF_E_ERROR;
  52
  53         if (dbgp == NULL) {
  54                 DWARF_SET_ERROR(error, DWARF_E_ARGUMENT);
  55                 return DWARF_E_ERROR;
  56         }
  57
  58         if ((dbg = *dbgp) == NULL)
  59                 return DWARF_E_NONE;
  60
  61         /* Free entries in the compilation unit list. */
  62         STAILQ_FOREACH_SAFE(cu, &dbg->dbg_cu, cu_next, tcu) {
  63                 /* Free entries in the die list */
  64                 STAILQ_FOREACH_SAFE(die, &cu->cu_die, die_next, tdie) {
  65                         /* Free entries in the attribute value list */
  66                         STAILQ_FOREACH_SAFE(av, &die->die_attrval, av_next, tav) {
  67                                 STAILQ_REMOVE(&die->die_attrval, av, _Dwarf_AttrValue, av_next);
  68                                 free(av);
  69                         }
  70
  71                         STAILQ_REMOVE(&cu->cu_die, die, _Dwarf_Die, die_next);
  72                         free(die);
  73                 }
  74
  75                 /* Free entries in the abbrev list */
  76                 STAILQ_FOREACH_SAFE(ab, &cu->cu_abbrev, a_next, tab) {
  77                         /* Free entries in the attribute list */
  78                         STAILQ_FOREACH_SAFE(at, &ab->a_attrib, at_next, tat) {
  79                                 STAILQ_REMOVE(&ab->a_attrib, at, _Dwarf_Attribute, at_next);
  80                                 free(at);
  81                         }
  82
  83                         STAILQ_REMOVE(&cu->cu_abbrev, ab, _Dwarf_Abbrev, a_next);
  84                         free(ab);
  85                 }
  86
  87                 STAILQ_REMOVE(&dbg->dbg_cu, cu, _Dwarf_CU, cu_next);
  88                 free(cu);
  89         }
  90
  91         if (dbg->dbg_elf_close)
  92                 /* Free resources associated with the ELF file. */
  93                 elf_end(dbg->dbg_elf);
  94
  95         free(dbg);
  96
  97         *dbgp = NULL;
  98
  99         return DWARF_E_NONE;
 100 }