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Diffstat (limited to 'src/libdw/dwarf_end.c')
| -rw-r--r-- | src/libdw/dwarf_end.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/libdw/dwarf_end.c b/src/libdw/dwarf_end.c new file mode 100644 index 00000000..1e733cae --- /dev/null +++ b/src/libdw/dwarf_end.c @@ -0,0 +1,141 @@ +/* Release debugging handling context. + Copyright (C) 2002-2011 Red Hat, Inc. + This file is part of Red Hat elfutils. + Written by Ulrich Drepper <drepper@redhat.com>, 2002. + + Red Hat elfutils is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by the + Free Software Foundation; version 2 of the License. + + Red Hat elfutils is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License along + with Red Hat elfutils; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. + + In addition, as a special exception, Red Hat, Inc. gives You the + additional right to link the code of Red Hat elfutils with code licensed + under any Open Source Initiative certified open source license + (http://www.opensource.org/licenses/index.php) which requires the + distribution of source code with any binary distribution and to + distribute linked combinations of the two. Non-GPL Code permitted under + this exception must only link to the code of Red Hat elfutils through + those well defined interfaces identified in the file named EXCEPTION + found in the source code files (the "Approved Interfaces"). The files + of Non-GPL Code may instantiate templates or use macros or inline + functions from the Approved Interfaces without causing the resulting + work to be covered by the GNU General Public License. Only Red Hat, + Inc. may make changes or additions to the list of Approved Interfaces. + Red Hat's grant of this exception is conditioned upon your not adding + any new exceptions. If you wish to add a new Approved Interface or + exception, please contact Red Hat. You must obey the GNU General Public + License in all respects for all of the Red Hat elfutils code and other + code used in conjunction with Red Hat elfutils except the Non-GPL Code + covered by this exception. If you modify this file, you may extend this + exception to your version of the file, but you are not obligated to do + so. If you do not wish to provide this exception without modification, + you must delete this exception statement from your version and license + this file solely under the GPL without exception. + + Red Hat elfutils is an included package of the Open Invention Network. + An included package of the Open Invention Network is a package for which + Open Invention Network licensees cross-license their patents. No patent + license is granted, either expressly or impliedly, by designation as an + included package. Should you wish to participate in the Open Invention + Network licensing program, please visit www.openinventionnetwork.com + <http://www.openinventionnetwork.com>. */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <search.h> +#include <stdlib.h> +#include <assert.h> +#include <string.h> + +#include "libdwP.h" +#include "cfi.h" + + +static void +noop_free (void *arg __attribute__ ((unused))) +{ +} + + +static void +cu_free (void *arg) +{ + struct Dwarf_CU *p = (struct Dwarf_CU *) arg; + + Dwarf_Abbrev_Hash_free (&p->abbrev_hash); + + tdestroy (p->locs, noop_free); +} + + +#if USE_ZLIB +void +internal_function +__libdw_free_zdata (Dwarf *dwarf) +{ + unsigned int gzip_mask = dwarf->sectiondata_gzip_mask; + while (gzip_mask != 0) + { + int i = ffs (gzip_mask); + assert (i > 0); + --i; + assert (i < IDX_last); + free (dwarf->sectiondata[i]); + gzip_mask &= ~(1U << i); + } +} +#endif + +int +dwarf_end (dwarf) + Dwarf *dwarf; +{ + if (dwarf != NULL) + { + if (dwarf->cfi != NULL) + /* Clean up the CFI cache. */ + __libdw_destroy_frame_cache (dwarf->cfi); + + Dwarf_Sig8_Hash_free (&dwarf->sig8_hash); + + /* The search tree for the CUs. NB: the CU data itself is + allocated separately, but the abbreviation hash tables need + to be handled. */ + tdestroy (dwarf->cu_tree, cu_free); + tdestroy (dwarf->tu_tree, cu_free); + + struct libdw_memblock *memp = dwarf->mem_tail; + /* The first block is allocated together with the Dwarf object. */ + while (memp->prev != NULL) + { + struct libdw_memblock *prevp = memp->prev; + free (memp); + memp = prevp; + } + + /* Free the pubnames helper structure. */ + free (dwarf->pubnames_sets); + + __libdw_free_zdata (dwarf); + + /* Free the ELF descriptor if necessary. */ + if (dwarf->free_elf) + elf_end (dwarf->elf); + + /* Free the context descriptor. */ + free (dwarf); + } + + return 0; +} +INTDEF(dwarf_end) |