Initial code drop of version 0.153
Change-Id: I97d4765497db839471de6b10aa612bfaca110297
diff --git a/0.153/libelf/gelf_getrela.c b/0.153/libelf/gelf_getrela.c
new file mode 100644
index 0000000..0275c37
--- /dev/null
+++ b/0.153/libelf/gelf_getrela.c
@@ -0,0 +1,130 @@
+/* Get RELA relocation information at given index.
+ Copyright (C) 2000, 2001, 2002 Red Hat, Inc.
+ This file is part of Red Hat elfutils.
+ Written by Ulrich Drepper <drepper@redhat.com>, 2000.
+
+ 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 <gelf.h>
+#include <string.h>
+
+#include "libelfP.h"
+
+
+GElf_Rela *
+gelf_getrela (data, ndx, dst)
+ Elf_Data *data;
+ int ndx;
+ GElf_Rela *dst;
+{
+ Elf_Data_Scn *data_scn = (Elf_Data_Scn *) data;
+ Elf_Scn *scn;
+ GElf_Rela *result;
+
+ if (data_scn == NULL)
+ return NULL;
+
+ if (unlikely (ndx < 0))
+ {
+ __libelf_seterrno (ELF_E_INVALID_INDEX);
+ return NULL;
+ }
+
+ if (unlikely (data_scn->d.d_type != ELF_T_RELA))
+ {
+ __libelf_seterrno (ELF_E_INVALID_HANDLE);
+ return NULL;
+ }
+
+ /* This is the one place where we have to take advantage of the fact
+ that an `Elf_Data' pointer is also a pointer to `Elf_Data_Scn'.
+ The interface is broken so that it requires this hack. */
+ scn = data_scn->s;
+
+ rwlock_rdlock (scn->elf->lock);
+
+ if (scn->elf->class == ELFCLASS32)
+ {
+ /* We have to convert the data. */
+ if (unlikely ((ndx + 1) * sizeof (Elf32_Rela) > data_scn->d.d_size))
+ {
+ __libelf_seterrno (ELF_E_INVALID_INDEX);
+ result = NULL;
+ }
+ else
+ {
+ Elf32_Rela *src = &((Elf32_Rela *) data_scn->d.d_buf)[ndx];
+
+ dst->r_offset = src->r_offset;
+ dst->r_info = GELF_R_INFO (ELF32_R_SYM (src->r_info),
+ ELF32_R_TYPE (src->r_info));
+ dst->r_addend = src->r_addend;
+
+ result = dst;
+ }
+ }
+ else
+ {
+ /* Simply copy the data after we made sure we are actually getting
+ correct data. */
+ if (unlikely ((ndx + 1) * sizeof (Elf64_Rela) > data_scn->d.d_size))
+ {
+ __libelf_seterrno (ELF_E_INVALID_INDEX);
+ result = NULL;
+ }
+ else
+ result = memcpy (dst, &((Elf64_Rela *) data_scn->d.d_buf)[ndx],
+ sizeof (Elf64_Rela));
+ }
+
+ rwlock_unlock (scn->elf->lock);
+
+ return result;
+}