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
29 ELFTC_VCSID("$Id: dwarf_arange.c 2072 2011-10-27 03:26:49Z jkoshy $");
30
31 int
dwarf_get_aranges(Dwarf_Debug dbg,Dwarf_Arange ** arlist,Dwarf_Signed * ret_arange_cnt,Dwarf_Error * error)32 dwarf_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
58 int
dwarf_get_arange(Dwarf_Arange * arlist,Dwarf_Unsigned arange_cnt,Dwarf_Addr addr,Dwarf_Arange * ret_arange,Dwarf_Error * error)59 dwarf_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
92 int
dwarf_get_cu_die_offset(Dwarf_Arange ar,Dwarf_Off * ret_offset,Dwarf_Error * error)93 dwarf_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
119 int
dwarf_get_arange_cu_header_offset(Dwarf_Arange ar,Dwarf_Off * ret_offset,Dwarf_Error * error)120 dwarf_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
143 int
dwarf_get_arange_info(Dwarf_Arange ar,Dwarf_Addr * start,Dwarf_Unsigned * length,Dwarf_Off * cu_die_offset,Dwarf_Error * error)144 dwarf_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