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 * $FreeBSD$
27 */
28
29#include <stdlib.h>
30#include "_libdwarf.h"
31
32int
33dwarf_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