Imported Upstream version 0.155

[platform/upstream/elfutils.git] / libdw / dwarf_formref_die.c

diff --git a/libdw/dwarf_formref_die.c b/libdw/dwarf_formref_die.c
index 3ec770d..f070127 100644 (file)
--- a/libdw/dwarf_formref_die.c
+++ b/libdw/dwarf_formref_die.c
@@ -1,51 +1,30 @@
 /* Look up the DIE in a reference-form attribute.
    Copyright (C) 2005-2010 Red Hat, Inc.
-   This file is part of Red Hat elfutils.
+   This file is part of elfutils.
 
-   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.
+   This file is free software; you can redistribute it and/or modify
+   it under the terms of either
 
-   Red Hat elfutils is distributed in the hope that it will be useful, but
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at
+       your option) any later version
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at
+       your option) any later version
+
+   or both in parallel, as here.
+
+   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>.  */
+   You should have received copies of the GNU General Public License and
+   the GNU Lesser General Public License along with this program.  If
+   not, see <http://www.gnu.org/licenses/>.  */
 
 #ifdef HAVE_CONFIG_H
 # include <config.h>
@@ -67,7 +46,7 @@ dwarf_formref_die (attr, result)
   struct Dwarf_CU *cu = attr->cu;
 
   Dwarf_Off offset;
-  if (attr->form == DW_FORM_ref_addr)
+  if (attr->form == DW_FORM_ref_addr || attr->form == DW_FORM_GNU_ref_alt)
     {
       /* This has an absolute offset.  */
 
@@ -75,11 +54,20 @@ dwarf_formref_die (attr, result)
                          ? cu->address_size
                          : cu->offset_size);
 
-      if (__libdw_read_offset (cu->dbg, IDX_debug_info, attr->valp,
+      Dwarf *dbg_ret = (attr->form == DW_FORM_GNU_ref_alt
+                       ? cu->dbg->alt_dwarf : cu->dbg);
+
+      if (dbg_ret == NULL)
+       {
+         __libdw_seterrno (DWARF_E_NO_ALT_DEBUGLINK);
+         return NULL;
+       }
+
+      if (__libdw_read_offset (cu->dbg, dbg_ret, IDX_debug_info, attr->valp,
                               ref_size, &offset, IDX_debug_info, 0))
        return NULL;
 
-      return INTUSE(dwarf_offdie) (cu->dbg, offset, result);
+      return INTUSE(dwarf_offdie) (dbg_ret, offset, result);
     }
 
   Elf_Data *data;