1/*-
2 * Copyright (c) 2009,2011 Kai Wang
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
27#include "_libdwarf.h"
28
29ELFTC_VCSID("$Id: dwarf_arange.c 2072 2011-10-27 03:26:49Z jkoshy $");
30
31int
32dwarf_get_aranges(Dwarf_Debug dbg, Dwarf_Arange **arlist,
33    Dwarf_Signed *ret_arange_cnt, Dwarf_Error *error)
34{
35
36	if (dbg == NULL || arlist == NULL || ret_arange_cnt == NULL) {
37		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
38		return (DW_DLV_ERROR);
39	}
40
41	if (dbg->dbg_arange_cnt == 0) {
42		if (_dwarf_arange_init(dbg, error) != DW_DLE_NONE)
43			return (DW_DLV_ERROR);
44		if (dbg->dbg_arange_cnt == 0) {
45			DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
46			return (DW_DLV_NO_ENTRY);
47		}
48	}
49
50	assert(dbg->dbg_arange_array != NULL);
51
52	*arlist = dbg->dbg_arange_array;
53	*ret_arange_cnt = dbg->dbg_arange_cnt;
54
55	return (DW_DLV_OK);
56}
57
58int
59dwarf_get_arange(Dwarf_Arange *arlist, Dwarf_Unsigned arange_cnt,
60    Dwarf_Addr addr, Dwarf_Arange *ret_arange, Dwarf_Error *error)
61{
62	Dwarf_Arange ar;
63	Dwarf_Debug dbg;
64	int i;
65
66	if (arlist == NULL) {
67		DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
68		return (DW_DLV_ERROR);
69	}
70
71	dbg = (*arlist)->ar_as->as_cu->cu_dbg;
72
73	if (ret_arange == NULL || arange_cnt == 0) {
74		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
75		return (DW_DLV_ERROR);
76	}
77
78	for (i = 0; (Dwarf_Unsigned)i < arange_cnt; i++) {
79		ar = arlist[i];
80		if (addr >= ar->ar_address && addr < ar->ar_address +
81		    ar->ar_range) {
82			*ret_arange = ar;
83			return (DW_DLV_OK);
84		}
85	}
86
87	DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
88
89	return (DW_DLV_NO_ENTRY);
90}
91
92int
93dwarf_get_cu_die_offset(Dwarf_Arange ar, Dwarf_Off *ret_offset,
94    Dwarf_Error *error)
95{
96	Dwarf_CU cu;
97	Dwarf_ArangeSet as;
98
99	if (ar == NULL) {
100		DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
101		return (DW_DLV_ERROR);
102	}
103
104	as = ar->ar_as;
105	assert(as != NULL);
106	cu = as->as_cu;
107	assert(cu != NULL);
108
109	if (ret_offset == NULL) {
110		DWARF_SET_ERROR(cu->cu_dbg, error, DW_DLE_ARGUMENT);
111		return (DW_DLV_ERROR);
112	}
113
114	*ret_offset = cu->cu_1st_offset;
115
116	return (DW_DLV_OK);
117}
118
119int
120dwarf_get_arange_cu_header_offset(Dwarf_Arange ar, Dwarf_Off *ret_offset,
121    Dwarf_Error *error)
122{
123	Dwarf_ArangeSet as;
124
125	if (ar == NULL) {
126		DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
127		return (DW_DLV_ERROR);
128	}
129
130	as = ar->ar_as;
131	assert(as != NULL);
132
133	if (ret_offset == NULL) {
134		DWARF_SET_ERROR(as->as_cu->cu_dbg, error, DW_DLE_ARGUMENT);
135		return (DW_DLV_ERROR);
136	}
137
138	*ret_offset = as->as_cu_offset;
139
140	return (DW_DLV_OK);
141}
142
143int
144dwarf_get_arange_info(Dwarf_Arange ar, Dwarf_Addr *start,
145    Dwarf_Unsigned *length, Dwarf_Off *cu_die_offset, Dwarf_Error *error)
146{
147	Dwarf_CU cu;
148	Dwarf_ArangeSet as;
149
150	if (ar == NULL) {
151		DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
152		return (DW_DLV_ERROR);
153	}
154
155	as = ar->ar_as;
156	assert(as != NULL);
157	cu = as->as_cu;
158	assert(cu != NULL);
159
160	if (start == NULL || length == NULL ||
161	    cu_die_offset == NULL) {
162		DWARF_SET_ERROR(cu->cu_dbg, error, DW_DLE_ARGUMENT);
163		return (DW_DLV_ERROR);
164	}
165
166	*start = ar->ar_address;
167	*length = ar->ar_range;
168	*cu_die_offset = cu->cu_1st_offset;
169
170	return (DW_DLV_OK);
171}
172