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_ranges.c 3029 2014-04-21 23:26:02Z kaiwang27 $");
30
31 static int
_dwarf_get_ranges(Dwarf_Debug dbg,Dwarf_CU cu,Dwarf_Off off,Dwarf_Ranges ** ranges,Dwarf_Signed * ret_cnt,Dwarf_Unsigned * ret_byte_cnt,Dwarf_Error * error)32 _dwarf_get_ranges(Dwarf_Debug dbg, Dwarf_CU cu, Dwarf_Off off,
33 Dwarf_Ranges **ranges, Dwarf_Signed *ret_cnt, Dwarf_Unsigned *ret_byte_cnt,
34 Dwarf_Error *error)
35 {
36 Dwarf_Rangelist rl;
37 int ret;
38
39 assert(cu != NULL);
40 if (_dwarf_ranges_find(dbg, off, &rl) == DW_DLE_NO_ENTRY) {
41 ret = _dwarf_ranges_add(dbg, cu, off, &rl, error);
42 if (ret != DW_DLE_NONE)
43 return (DW_DLV_ERROR);
44 }
45
46 *ranges = rl->rl_rgarray;
47 *ret_cnt = rl->rl_rglen;
48
49 if (ret_byte_cnt != NULL)
50 *ret_byte_cnt = cu->cu_pointer_size * rl->rl_rglen * 2;
51
52 return (DW_DLV_OK);
53 }
54
55 int
dwarf_get_ranges(Dwarf_Debug dbg,Dwarf_Off offset,Dwarf_Ranges ** ranges,Dwarf_Signed * ret_cnt,Dwarf_Unsigned * ret_byte_cnt,Dwarf_Error * error)56 dwarf_get_ranges(Dwarf_Debug dbg, Dwarf_Off offset, Dwarf_Ranges **ranges,
57 Dwarf_Signed *ret_cnt, Dwarf_Unsigned *ret_byte_cnt, Dwarf_Error *error)
58 {
59
60 if (dbg == NULL || ranges == NULL || ret_cnt == NULL) {
61 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
62 return (DW_DLV_ERROR);
63 }
64
65 if (!dbg->dbg_info_loaded) {
66 if (_dwarf_info_load(dbg, 1, 1, error) != DW_DLE_NONE)
67 return (DW_DLV_ERROR);
68 }
69
70 return (_dwarf_get_ranges(dbg, STAILQ_FIRST(&dbg->dbg_cu), offset,
71 ranges, ret_cnt, ret_byte_cnt, error));
72 }
73
74 int
dwarf_get_ranges_a(Dwarf_Debug dbg,Dwarf_Off offset,Dwarf_Die die,Dwarf_Ranges ** ranges,Dwarf_Signed * ret_cnt,Dwarf_Unsigned * ret_byte_cnt,Dwarf_Error * error)75 dwarf_get_ranges_a(Dwarf_Debug dbg, Dwarf_Off offset, Dwarf_Die die,
76 Dwarf_Ranges **ranges, Dwarf_Signed *ret_cnt, Dwarf_Unsigned *ret_byte_cnt,
77 Dwarf_Error *error)
78 {
79
80 if (dbg == NULL || die == NULL || ranges == NULL || ret_cnt == NULL) {
81 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
82 return (DW_DLV_ERROR);
83 }
84
85 return (_dwarf_get_ranges(dbg, die->die_cu, offset, ranges, ret_cnt,
86 ret_byte_cnt, error));
87 }
88