1 /* $NetBSD: dwarf_macinfo.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_macinfo.c,v 1.2 2014/03/09 16:58:04 christos Exp $");
32 ELFTC_VCSID("Id: dwarf_macinfo.c 2074 2011-10-27 03:34:33Z jkoshy ");
33
34 char *
dwarf_find_macro_value_start(char * macro_string)35 dwarf_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
51 int
dwarf_get_macro_details(Dwarf_Debug dbg,Dwarf_Off offset,Dwarf_Unsigned max_count,Dwarf_Signed * entry_cnt,Dwarf_Macro_Details ** details,Dwarf_Error * error)52 dwarf_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