1/*	$NetBSD: dwarf_ranges.c,v 1.5 2024/03/03 17:37:32 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 1.5 2024/03/03 17:37:32 christos Exp $");
32ELFTC_VCSID("Id: dwarf_ranges.c 3029 2014-04-21 23:26:02Z kaiwang27");
33
34static int
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
58int
59dwarf_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, 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
77int
78dwarf_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