1 /* Return reference offset represented by attribute.
2 Copyright (C) 2003, 2005 Red Hat, Inc.
3 Written by Ulrich Drepper <drepper@redhat.com>, 2003.
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.
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. */
24 dwarf_formref (attr, return_offset)
25 Dwarf_Attribute *attr;
26 Dwarf_Off *return_offset;
31 const unsigned char *datap;
36 *return_offset = *attr->valp;
40 *return_offset = read_2ubyte_unaligned (attr->cu->dbg, attr->valp);
44 *return_offset = read_4ubyte_unaligned (attr->cu->dbg, attr->valp);
48 *return_offset = read_8ubyte_unaligned (attr->cu->dbg, attr->valp);
51 case DW_FORM_ref_udata:
53 get_uleb128 (*return_offset, datap);
56 case DW_FORM_ref_addr:
57 __libdw_seterrno (DWARF_E_INVALID_REFERENCE);
61 __libdw_seterrno (DWARF_E_NO_REFERENCE);