dwarf_macinfo.c revision 1.2.4.2 
1/*	$NetBSD: dwarf_macinfo.c,v 1.2.4.2 2014/05/22 15:44:46 yamt 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_macinfo.c,v 1.2.4.2 2014/05/22 15:44:46 yamt Exp $");
32ELFTC_VCSID("Id: dwarf_macinfo.c 2074 2011-10-27 03:34:33Z jkoshy ");
33
34char *
35dwarf_find_macro_value_start(char *macro_string)
36{
37	char *p;
38
39	if (macro_string == NULL)
40		return (NULL);
41
42	p = macro_string;
43	while (*p != '\0' && *p != ' ')
44		p++;
45	if (*p == ' ')
46		p++;
47
48	return (p);
49}
50
51int
52dwarf_get_macro_details(Dwarf_Debug dbg, Dwarf_Off offset,
53    Dwarf_Unsigned max_count, Dwarf_Signed *entry_cnt,
54    Dwarf_Macro_Details **details, Dwarf_Error *error)
55{
56	Dwarf_MacroSet ms;
57	Dwarf_Unsigned cnt;
58	int i;
59
60	if (dbg == NULL || entry_cnt == NULL || details == NULL) {
61		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
62		return (DW_DLV_ERROR);
63	}
64
65	if (STAILQ_EMPTY(&dbg->dbg_mslist)) {
66		if (_dwarf_macinfo_init(dbg, error) != DW_DLE_NONE)
67			return (DW_DLV_ERROR);
68		if (STAILQ_EMPTY(&dbg->dbg_mslist)) {
69			DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
70			return (DW_DLV_NO_ENTRY);
71		}
72	}
73
74	STAILQ_FOREACH(ms, &dbg->dbg_mslist, ms_next) {
75		for (i = 0; (Dwarf_Unsigned) i < ms->ms_cnt; i++)
76			if (ms->ms_mdlist[i].dmd_offset == offset) {
77				cnt = ms->ms_cnt - i;
78				if (max_count != 0 && cnt > max_count)
79					cnt = max_count;
80
81				*details = &ms->ms_mdlist[i];
82				*entry_cnt = cnt;
83
84				return (DW_DLV_OK);
85			}
86	}
87
88	DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
89
90	return (DW_DLV_NO_ENTRY);
91}
92