1 /* Return DIE at given offset.
2 Copyright (C) 2002, 2003 Red Hat, Inc.
3 Written by Ulrich Drepper <drepper@redhat.com>, 2002.
4
5 This program is Open Source software; you can redistribute it and/or
6 modify it under the terms of the Open Software License version 1.0 as
7 published by the Open Source Initiative.
8
9 You should have received a copy of the Open Software License along
10 with this program; if not, you may obtain a copy of the Open Software
11 License version 1.0 from http://www.opensource.org/licenses/osl.php or
12 by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
13 3001 King Ranch Road, Ukiah, CA 95482. */
14
15 #ifdef HAVE_CONFIG_H
16 # include <config.h>
17 #endif
18
19 #include <string.h>
20 #include "libdwP.h"
21
22
23 Dwarf_Die *
dwarf_offdie(dbg,offset,result)24 dwarf_offdie (dbg, offset, result)
25 Dwarf *dbg;
26 Dwarf_Off offset;
27 Dwarf_Die *result;
28 {
29 if (dbg == NULL)
30 return NULL;
31
32 if (offset >= dbg->sectiondata[IDX_debug_info]->d_size)
33 {
34 __libdw_seterrno (DWARF_E_INVALID_DWARF);
35 return NULL;
36 }
37
38 /* Clear the entire DIE structure. This signals we have not yet
39 determined any of the information. */
40 memset (result, '\0', sizeof (Dwarf_Die));
41
42 result->addr = (char *) dbg->sectiondata[IDX_debug_info]->d_buf + offset;
43
44 /* Get the CU. */
45 result->cu = __libdw_findcu (dbg, offset);
46 if (result->cu == NULL)
47 {
48 /* This should never happen. The input file is malformed. */
49 __libdw_seterrno (DWARF_E_INVALID_DWARF);
50 result = NULL;
51 }
52
53 return result;
54 }
55