1 /*-
2 * Copyright (c) 2007 John Birrell (jb@freebsd.org)
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 * $FreeBSD: stable/9/lib/libdwarf/dwarf_finish.c 179187 2008-05-22 02:14:23Z jb $
27 */
28
29 #include <stdlib.h>
30 #include "_libdwarf.h"
31
32 int
dwarf_finish(Dwarf_Debug * dbgp,Dwarf_Error * error)33 dwarf_finish(Dwarf_Debug *dbgp, Dwarf_Error *error)
34 {
35 Dwarf_Abbrev ab;
36 Dwarf_Abbrev tab;
37 Dwarf_Attribute at;
38 Dwarf_Attribute tat;
39 Dwarf_AttrValue av;
40 Dwarf_AttrValue tav;
41 Dwarf_CU cu;
42 Dwarf_CU tcu;
43 Dwarf_Debug dbg;
44 Dwarf_Die die;
45 Dwarf_Die tdie;
46
47 if (error == NULL)
48 /* Can only return a generic error. */
49 return DWARF_E_ERROR;
50
51 if (dbgp == NULL) {
52 DWARF_SET_ERROR(error, DWARF_E_ARGUMENT);
53 return DWARF_E_ERROR;
54 }
55
56 if ((dbg = *dbgp) == NULL)
57 return DWARF_E_NONE;
58
59 /* Free entries in the compilation unit list. */
60 STAILQ_FOREACH_SAFE(cu, &dbg->dbg_cu, cu_next, tcu) {
61 /* Free entries in the die list */
62 STAILQ_FOREACH_SAFE(die, &cu->cu_die, die_next, tdie) {
63 /* Free entries in the attribute value list */
64 STAILQ_FOREACH_SAFE(av, &die->die_attrval, av_next, tav) {
65 STAILQ_REMOVE(&die->die_attrval, av, _Dwarf_AttrValue, av_next);
66 free(av);
67 }
68
69 STAILQ_REMOVE(&cu->cu_die, die, _Dwarf_Die, die_next);
70 free(die);
71 }
72
73 /* Free entries in the abbrev list */
74 STAILQ_FOREACH_SAFE(ab, &cu->cu_abbrev, a_next, tab) {
75 /* Free entries in the attribute list */
76 STAILQ_FOREACH_SAFE(at, &ab->a_attrib, at_next, tat) {
77 STAILQ_REMOVE(&ab->a_attrib, at, _Dwarf_Attribute, at_next);
78 free(at);
79 }
80
81 STAILQ_REMOVE(&cu->cu_abbrev, ab, _Dwarf_Abbrev, a_next);
82 free(ab);
83 }
84
85 STAILQ_REMOVE(&dbg->dbg_cu, cu, _Dwarf_CU, cu_next);
86 free(cu);
87 }
88
89 if (dbg->dbg_elf_close)
90 /* Free resources associated with the ELF file. */
91 elf_end(dbg->dbg_elf);
92
93 free(dbg);
94
95 *dbgp = NULL;
96
97 return DWARF_E_NONE;
98 }
99