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_macinfo.c 2074 2011-10-27 03:34:33Z jkoshy $");
30
31char *
32dwarf_find_macro_value_start(char *macro_string)
33{
34	char *p;
35
36	if (macro_string == NULL)
37		return (NULL);
38
39	p = macro_string;
40	while (*p != '\0' && *p != ' ')
41		p++;
42	if (*p == ' ')
43		p++;
44
45	return (p);
46}
47
48int
49dwarf_get_macro_details(Dwarf_Debug dbg, Dwarf_Off offset,
50    Dwarf_Unsigned max_count, Dwarf_Signed *entry_cnt,
51    Dwarf_Macro_Details **details, Dwarf_Error *error)
52{
53	Dwarf_MacroSet ms;
54	Dwarf_Unsigned cnt;
55	int i;
56
57	if (dbg == NULL || entry_cnt == NULL || details == NULL) {
58		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
59		return (DW_DLV_ERROR);
60	}
61
62	if (STAILQ_EMPTY(&dbg->dbg_mslist)) {
63		if (_dwarf_macinfo_init(dbg, error) != DW_DLE_NONE)
64			return (DW_DLV_ERROR);
65		if (STAILQ_EMPTY(&dbg->dbg_mslist)) {
66			DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
67			return (DW_DLV_NO_ENTRY);
68		}
69	}
70
71	STAILQ_FOREACH(ms, &dbg->dbg_mslist, ms_next) {
72		for (i = 0; (Dwarf_Unsigned) i < ms->ms_cnt; i++)
73			if (ms->ms_mdlist[i].dmd_offset == offset) {
74				cnt = ms->ms_cnt - i;
75				if (max_count != 0 && cnt > max_count)
76					cnt = max_count;
77
78				*details = &ms->ms_mdlist[i];
79				*entry_cnt = cnt;
80
81				return (DW_DLV_OK);
82			}
83	}
84
85	DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
86
87	return (DW_DLV_NO_ENTRY);
88}
89