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 (at) 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 noop_free (void *arg __attribute__ ((unused))) 45 { 46 } 47 48 49 static void 50 cu_free (void *arg) 51 { 52 struct Dwarf_CU *p = (struct Dwarf_CU *) arg; 53 54 Dwarf_Abbrev_Hash_free (&p->abbrev_hash); 55 56 tdestroy (p->locs, noop_free); 57 } 58 59 60 #if USE_ZLIB 61 void 62 internal_function 63 __libdw_free_zdata (Dwarf *dwarf) 64 { 65 unsigned int gzip_mask = dwarf->sectiondata_gzip_mask; 66 while (gzip_mask != 0) 67 { 68 int i = ffs (gzip_mask); 69 assert (i > 0); 70 --i; 71 assert (i < IDX_last); 72 free (dwarf->sectiondata[i]); 73 gzip_mask &= ~(1U << i); 74 } 75 } 76 #endif 77 78 int 79 dwarf_end (dwarf) 80 Dwarf *dwarf; 81 { 82 if (dwarf != NULL) 83 { 84 if (dwarf->cfi != NULL) 85 /* Clean up the CFI cache. */ 86 __libdw_destroy_frame_cache (dwarf->cfi); 87 88 Dwarf_Sig8_Hash_free (&dwarf->sig8_hash); 89 90 /* The search tree for the CUs. NB: the CU data itself is 91 allocated separately, but the abbreviation hash tables need 92 to be handled. */ 93 tdestroy (dwarf->cu_tree, cu_free); 94 tdestroy (dwarf->tu_tree, cu_free); 95 96 /* Search tree for macro opcode tables. */ 97 tdestroy (dwarf->macro_ops, noop_free); 98 99 /* Search tree for decoded .debug_lines units. */ 100 tdestroy (dwarf->files_lines, noop_free); 101 102 struct libdw_memblock *memp = dwarf->mem_tail; 103 /* The first block is allocated together with the Dwarf object. */ 104 while (memp->prev != NULL) 105 { 106 struct libdw_memblock *prevp = memp->prev; 107 free (memp); 108 memp = prevp; 109 } 110 111 /* Free the pubnames helper structure. */ 112 free (dwarf->pubnames_sets); 113 114 __libdw_free_zdata (dwarf); 115 116 /* Free the ELF descriptor if necessary. */ 117 if (dwarf->free_elf) 118 elf_end (dwarf->elf); 119 120 /* Free the fake location list CU. */ 121 free (dwarf->fake_loc_cu); 122 123 /* Free the context descriptor. */ 124 free (dwarf); 125 } 126 127 return 0; 128 } 129 INTDEF(dwarf_end) 130
