1*0a6a1f1dSLionel Sambuc /* $NetBSD: dwarf_str.c,v 1.2 2014/03/09 16:58:04 christos Exp $ */
2*0a6a1f1dSLionel Sambuc
3*0a6a1f1dSLionel Sambuc /*-
4*0a6a1f1dSLionel Sambuc * Copyright (c) 2009 Kai Wang
5*0a6a1f1dSLionel Sambuc * All rights reserved.
6*0a6a1f1dSLionel Sambuc *
7*0a6a1f1dSLionel Sambuc * Redistribution and use in source and binary forms, with or without
8*0a6a1f1dSLionel Sambuc * modification, are permitted provided that the following conditions
9*0a6a1f1dSLionel Sambuc * are met:
10*0a6a1f1dSLionel Sambuc * 1. Redistributions of source code must retain the above copyright
11*0a6a1f1dSLionel Sambuc * notice, this list of conditions and the following disclaimer.
12*0a6a1f1dSLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright
13*0a6a1f1dSLionel Sambuc * notice, this list of conditions and the following disclaimer in the
14*0a6a1f1dSLionel Sambuc * documentation and/or other materials provided with the distribution.
15*0a6a1f1dSLionel Sambuc *
16*0a6a1f1dSLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17*0a6a1f1dSLionel Sambuc * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18*0a6a1f1dSLionel Sambuc * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19*0a6a1f1dSLionel Sambuc * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20*0a6a1f1dSLionel Sambuc * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21*0a6a1f1dSLionel Sambuc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22*0a6a1f1dSLionel Sambuc * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23*0a6a1f1dSLionel Sambuc * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24*0a6a1f1dSLionel Sambuc * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25*0a6a1f1dSLionel Sambuc * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26*0a6a1f1dSLionel Sambuc * SUCH DAMAGE.
27*0a6a1f1dSLionel Sambuc */
28*0a6a1f1dSLionel Sambuc
29*0a6a1f1dSLionel Sambuc #include "_libdwarf.h"
30*0a6a1f1dSLionel Sambuc
31*0a6a1f1dSLionel Sambuc __RCSID("$NetBSD: dwarf_str.c,v 1.2 2014/03/09 16:58:04 christos Exp $");
32*0a6a1f1dSLionel Sambuc ELFTC_VCSID("Id: dwarf_str.c 2075 2011-10-27 03:47:28Z jkoshy ");
33*0a6a1f1dSLionel Sambuc
34*0a6a1f1dSLionel Sambuc int
dwarf_get_str(Dwarf_Debug dbg,Dwarf_Off offset,char ** string,Dwarf_Signed * ret_strlen,Dwarf_Error * error)35*0a6a1f1dSLionel Sambuc dwarf_get_str(Dwarf_Debug dbg, Dwarf_Off offset, char **string,
36*0a6a1f1dSLionel Sambuc Dwarf_Signed *ret_strlen, Dwarf_Error *error)
37*0a6a1f1dSLionel Sambuc {
38*0a6a1f1dSLionel Sambuc Dwarf_Section *ds;
39*0a6a1f1dSLionel Sambuc
40*0a6a1f1dSLionel Sambuc if (dbg == NULL || offset < 0 || string == NULL || ret_strlen == NULL) {
41*0a6a1f1dSLionel Sambuc DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
42*0a6a1f1dSLionel Sambuc return (DW_DLV_ERROR);
43*0a6a1f1dSLionel Sambuc }
44*0a6a1f1dSLionel Sambuc
45*0a6a1f1dSLionel Sambuc ds = _dwarf_find_section(dbg, ".debug_str");
46*0a6a1f1dSLionel Sambuc if (ds == NULL) {
47*0a6a1f1dSLionel Sambuc DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
48*0a6a1f1dSLionel Sambuc return (DW_DLV_NO_ENTRY);
49*0a6a1f1dSLionel Sambuc }
50*0a6a1f1dSLionel Sambuc
51*0a6a1f1dSLionel Sambuc if ((Dwarf_Unsigned) offset > ds->ds_size) {
52*0a6a1f1dSLionel Sambuc DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
53*0a6a1f1dSLionel Sambuc return (DW_DLV_ERROR);
54*0a6a1f1dSLionel Sambuc }
55*0a6a1f1dSLionel Sambuc
56*0a6a1f1dSLionel Sambuc if ((Dwarf_Unsigned) offset == ds->ds_size) {
57*0a6a1f1dSLionel Sambuc DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
58*0a6a1f1dSLionel Sambuc return (DW_DLV_NO_ENTRY);
59*0a6a1f1dSLionel Sambuc }
60*0a6a1f1dSLionel Sambuc
61*0a6a1f1dSLionel Sambuc *string = (char *) ds->ds_data + offset;
62*0a6a1f1dSLionel Sambuc *ret_strlen = strlen(*string);
63*0a6a1f1dSLionel Sambuc
64*0a6a1f1dSLionel Sambuc return (DW_DLV_OK);
65*0a6a1f1dSLionel Sambuc }
66