1 /* $NetBSD: dwarf_ranges.c,v 1.2 2014/03/09 16:58:04 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2009,2011 Kai Wang
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include "_libdwarf.h"
30
31 __RCSID("$NetBSD: dwarf_ranges.c,v 1.2 2014/03/09 16:58:04 christos Exp $");
32 ELFTC_VCSID("Id: dwarf_ranges.c 2075 2011-10-27 03:47:28Z jkoshy ");
33
34 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)35 _dwarf_get_ranges(Dwarf_Debug dbg, Dwarf_CU cu, Dwarf_Off off,
36 Dwarf_Ranges **ranges, Dwarf_Signed *ret_cnt, Dwarf_Unsigned *ret_byte_cnt,
37 Dwarf_Error *error)
38 {
39 Dwarf_Rangelist rl;
40 int ret;
41
42 assert(cu != NULL);
43 if (_dwarf_ranges_find(dbg, off, &rl) == DW_DLE_NO_ENTRY) {
44 ret = _dwarf_ranges_add(dbg, cu, off, &rl, error);
45 if (ret != DW_DLE_NONE)
46 return (DW_DLV_ERROR);
47 }
48
49 *ranges = rl->rl_rgarray;
50 *ret_cnt = rl->rl_rglen;
51
52 if (ret_byte_cnt != NULL)
53 *ret_byte_cnt = cu->cu_pointer_size * rl->rl_rglen * 2;
54
55 return (DW_DLV_OK);
56 }
57
58 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)59 dwarf_get_ranges(Dwarf_Debug dbg, Dwarf_Off offset, Dwarf_Ranges **ranges,
60 Dwarf_Signed *ret_cnt, Dwarf_Unsigned *ret_byte_cnt, Dwarf_Error *error)
61 {
62
63 if (dbg == NULL || ranges == NULL || ret_cnt == NULL) {
64 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
65 return (DW_DLV_ERROR);
66 }
67
68 if (!dbg->dbg_info_loaded) {
69 if (_dwarf_info_load(dbg, 1, error) != DW_DLE_NONE)
70 return (DW_DLV_ERROR);
71 }
72
73 return (_dwarf_get_ranges(dbg, STAILQ_FIRST(&dbg->dbg_cu), offset,
74 ranges, ret_cnt, ret_byte_cnt, error));
75 }
76
77 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)78 dwarf_get_ranges_a(Dwarf_Debug dbg, Dwarf_Off offset, Dwarf_Die die,
79 Dwarf_Ranges **ranges, Dwarf_Signed *ret_cnt, Dwarf_Unsigned *ret_byte_cnt,
80 Dwarf_Error *error)
81 {
82
83 if (dbg == NULL || die == NULL || ranges == NULL || ret_cnt == NULL) {
84 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
85 return (DW_DLV_ERROR);
86 }
87
88 return (_dwarf_get_ranges(dbg, die->die_cu, offset, ranges, ret_cnt,
89 ret_byte_cnt, error));
90 }
91