Line data    Source code

       1             : /* Release debugging handling context.
       2             :    Copyright (C) 2002-2011, 2014 Red Hat, Inc.
       3             :    This file is part of elfutils.
       4             :    Written by Ulrich Drepper <drepper@redhat.com>, 2002.
       5             : 
       6             :    This file is free software; you can redistribute it and/or modify
       7             :    it under the terms of either
       8             : 
       9             :      * the GNU Lesser General Public License as published by the Free
      10             :        Software Foundation; either version 3 of the License, or (at
      11             :        your option) any later version
      12             : 
      13             :    or
      14             : 
      15             :      * the GNU General Public License as published by the Free
      16             :        Software Foundation; either version 2 of the License, or (at
      17             :        your option) any later version
      18             : 
      19             :    or both in parallel, as here.
      20             : 
      21             :    elfutils is distributed in the hope that it will be useful, but
      22             :    WITHOUT ANY WARRANTY; without even the implied warranty of
      23             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      24             :    General Public License for more details.
      25             : 
      26             :    You should have received copies of the GNU General Public License and
      27             :    the GNU Lesser General Public License along with this program.  If
      28             :    not, see <http://www.gnu.org/licenses/>.  */
      29             : 
      30             : #ifdef HAVE_CONFIG_H
      31             : # include <config.h>
      32             : #endif
      33             : 
      34             : #include <search.h>
      35             : #include <stdlib.h>
      36             : #include <assert.h>
      37             : #include <string.h>
      38             : 
      39             : #include "libdwP.h"
      40             : #include "cfi.h"
      41             : 
      42             : 
      43             : static void
      44        5134 : noop_free (void *arg __attribute__ ((unused)))
      45             : {
      46        5134 : }
      47             : 
      48             : 
      49             : static void
      50       10331 : cu_free (void *arg)
      51             : {
      52       15464 :   struct Dwarf_CU *p = (struct Dwarf_CU *) arg;
      53             : 
      54       15464 :   Dwarf_Abbrev_Hash_free (&p->abbrev_hash);
      55             : 
      56       15464 :   tdestroy (p->locs, noop_free);
      57       10331 : }
      58             : 
      59             : 
      60             : int
      61        5294 : dwarf_end (Dwarf *dwarf)
      62             : {
      63        5294 :   if (dwarf != NULL)
      64             :     {
      65        5289 :       if (dwarf->cfi != NULL)
      66             :         /* Clean up the CFI cache.  */
      67           9 :         __libdw_destroy_frame_cache (dwarf->cfi);
      68             : 
      69        5289 :       Dwarf_Sig8_Hash_free (&dwarf->sig8_hash);
      70             : 
      71             :       /* The search tree for the CUs.  NB: the CU data itself is
      72             :          allocated separately, but the abbreviation hash tables need
      73             :          to be handled.  */
      74        5289 :       tdestroy (dwarf->cu_tree, cu_free);
      75        5289 :       tdestroy (dwarf->tu_tree, cu_free);
      76             : 
      77             :       /* Search tree for macro opcode tables.  */
      78        5289 :       tdestroy (dwarf->macro_ops, noop_free);
      79             : 
      80             :       /* Search tree for decoded .debug_lines units.  */
      81        5289 :       tdestroy (dwarf->files_lines, noop_free);
      82             : 
      83        5289 :       struct libdw_memblock *memp = dwarf->mem_tail;
      84             :       /* The first block is allocated together with the Dwarf object.  */
      85       15935 :       while (memp->prev != NULL)
      86             :         {
      87        5357 :           struct libdw_memblock *prevp = memp->prev;
      88        5357 :           free (memp);
      89        5357 :           memp = prevp;
      90             :         }
      91             : 
      92             :       /* Free the pubnames helper structure.  */
      93        5289 :       free (dwarf->pubnames_sets);
      94             : 
      95             :       /* Free the ELF descriptor if necessary.  */
      96        5289 :       if (dwarf->free_elf)
      97          46 :         elf_end (dwarf->elf);
      98             : 
      99             :       /* Free the fake location list CU.  */
     100        5289 :       if (dwarf->fake_loc_cu != NULL)
     101             :         {
     102       10266 :           cu_free (dwarf->fake_loc_cu);
     103        5133 :           free (dwarf->fake_loc_cu);
     104             :         }
     105             : 
     106             :       /* Free the context descriptor.  */
     107        5289 :       free (dwarf);
     108             :     }
     109             : 
     110        5294 :   return 0;
     111             : }
     112             : INTDEF(dwarf_end)