105 lines
3.9 KiB
C
105 lines
3.9 KiB
C
/* Return signed constant represented by attribute.
|
|
Copyright (C) 2003, 2005 Red Hat, Inc.
|
|
This file is part of Red Hat elfutils.
|
|
Written by Ulrich Drepper <drepper@redhat.com>, 2003.
|
|
|
|
Red Hat elfutils is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by the
|
|
Free Software Foundation; version 2 of the License.
|
|
|
|
Red Hat elfutils is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License along
|
|
with Red Hat elfutils; if not, write to the Free Software Foundation,
|
|
Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
|
|
|
|
In addition, as a special exception, Red Hat, Inc. gives You the
|
|
additional right to link the code of Red Hat elfutils with code licensed
|
|
under any Open Source Initiative certified open source license
|
|
(http://www.opensource.org/licenses/index.php) which requires the
|
|
distribution of source code with any binary distribution and to
|
|
distribute linked combinations of the two. Non-GPL Code permitted under
|
|
this exception must only link to the code of Red Hat elfutils through
|
|
those well defined interfaces identified in the file named EXCEPTION
|
|
found in the source code files (the "Approved Interfaces"). The files
|
|
of Non-GPL Code may instantiate templates or use macros or inline
|
|
functions from the Approved Interfaces without causing the resulting
|
|
work to be covered by the GNU General Public License. Only Red Hat,
|
|
Inc. may make changes or additions to the list of Approved Interfaces.
|
|
Red Hat's grant of this exception is conditioned upon your not adding
|
|
any new exceptions. If you wish to add a new Approved Interface or
|
|
exception, please contact Red Hat. You must obey the GNU General Public
|
|
License in all respects for all of the Red Hat elfutils code and other
|
|
code used in conjunction with Red Hat elfutils except the Non-GPL Code
|
|
covered by this exception. If you modify this file, you may extend this
|
|
exception to your version of the file, but you are not obligated to do
|
|
so. If you do not wish to provide this exception without modification,
|
|
you must delete this exception statement from your version and license
|
|
this file solely under the GPL without exception.
|
|
|
|
Red Hat elfutils is an included package of the Open Invention Network.
|
|
An included package of the Open Invention Network is a package for which
|
|
Open Invention Network licensees cross-license their patents. No patent
|
|
license is granted, either expressly or impliedly, by designation as an
|
|
included package. Should you wish to participate in the Open Invention
|
|
Network licensing program, please visit www.openinventionnetwork.com
|
|
<http://www.openinventionnetwork.com>. */
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif
|
|
|
|
#include <dwarf.h>
|
|
#include "libdwP.h"
|
|
|
|
|
|
int
|
|
dwarf_formsdata (attr, return_sval)
|
|
Dwarf_Attribute *attr;
|
|
Dwarf_Sword *return_sval;
|
|
{
|
|
if (attr == NULL)
|
|
return -1;
|
|
|
|
const unsigned char *datap;
|
|
|
|
switch (attr->form)
|
|
{
|
|
case DW_FORM_data1:
|
|
*return_sval = *attr->valp;
|
|
break;
|
|
|
|
case DW_FORM_data2:
|
|
*return_sval = read_2ubyte_unaligned (attr->cu->dbg, attr->valp);
|
|
break;
|
|
|
|
case DW_FORM_data4:
|
|
*return_sval = read_4ubyte_unaligned (attr->cu->dbg, attr->valp);
|
|
break;
|
|
|
|
case DW_FORM_data8:
|
|
*return_sval = read_8ubyte_unaligned (attr->cu->dbg, attr->valp);
|
|
break;
|
|
|
|
case DW_FORM_sdata:
|
|
datap = attr->valp;
|
|
get_sleb128 (*return_sval, datap);
|
|
break;
|
|
|
|
case DW_FORM_udata:
|
|
datap = attr->valp;
|
|
get_uleb128 (*return_sval, datap);
|
|
break;
|
|
|
|
default:
|
|
__libdw_seterrno (DWARF_E_NO_CONSTANT);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
INTDEF(dwarf_formsdata)
|