1 /* Get string.
2 Copyright (C) 2004 Red Hat, Inc.
3 Written by Ulrich Drepper <drepper@redhat.com>, 2004.
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 const char *
dwarf_getstring(dbg,offset,lenp)24 dwarf_getstring (dbg, offset, lenp)
25 Dwarf *dbg;
26 Dwarf_Off offset;
27 size_t *lenp;
28 {
29 if (dbg == NULL)
30 return NULL;
31
32 if (dbg->sectiondata[IDX_debug_str] == NULL
33 || offset >= dbg->sectiondata[IDX_debug_str]->d_size)
34 {
35 no_string:
36 __libdw_seterrno (DWARF_E_NO_STRING);
37 return NULL;
38 }
39
40 const char *result = ((const char *) dbg->sectiondata[IDX_debug_str]->d_buf
41 + offset);
42 const char *endp = memchr (result, '\0',
43 dbg->sectiondata[IDX_debug_str]->d_size - offset);
44 if (endp == NULL)
45 goto no_string;
46
47 if (lenp != NULL)
48 *lenp = endp - result;
49
50 return result;
51 }
52