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
29 ELFTC_VCSID("$Id: dwarf_macinfo.c 2074 2011-10-27 03:34:33Z jkoshy $");
30
31 char *
dwarf_find_macro_value_start(char * macro_string)32 dwarf_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
48 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)49 dwarf_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