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author | Ben Cheng <bccheng@google.com> | 2013-11-20 14:45:36 -0800 |
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committer | Ben Cheng <bccheng@google.com> | 2013-11-20 14:45:36 -0800 |
commit | 25b3c049e70834cf33790a28643ab058b507b35c (patch) | |
tree | 39d448fecbc10f8da80f59ab09530b487be66c89 /0.153/libdwfl/dwfl_validate_address.c | |
parent | e77913632d2f2824def79f8e747e0be2a4adc584 (diff) | |
download | android_external_elfutils-25b3c049e70834cf33790a28643ab058b507b35c.tar.gz android_external_elfutils-25b3c049e70834cf33790a28643ab058b507b35c.tar.bz2 android_external_elfutils-25b3c049e70834cf33790a28643ab058b507b35c.zip |
Initial code drop of version 0.153
Change-Id: I97d4765497db839471de6b10aa612bfaca110297
Diffstat (limited to '0.153/libdwfl/dwfl_validate_address.c')
-rw-r--r-- | 0.153/libdwfl/dwfl_validate_address.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/0.153/libdwfl/dwfl_validate_address.c b/0.153/libdwfl/dwfl_validate_address.c new file mode 100644 index 00000000..81073762 --- /dev/null +++ b/0.153/libdwfl/dwfl_validate_address.c @@ -0,0 +1,82 @@ +/* Validate an address and the relocatability of an offset from it. + Copyright (C) 2005 Red Hat, Inc. + This file is part of Red Hat 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. + + 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>. */ + +#include "libdwflP.h" + +int +dwfl_validate_address (Dwfl *dwfl, Dwarf_Addr address, Dwarf_Sword offset) +{ + Dwfl_Module *mod = INTUSE(dwfl_addrmodule) (dwfl, address); + if (mod == NULL) + return -1; + + Dwarf_Addr relative = address; + int idx = INTUSE(dwfl_module_relocate_address) (mod, &relative); + if (idx < 0) + return -1; + + if (offset != 0) + { + int offset_idx = -1; + relative = address + offset; + if (relative >= mod->low_addr && relative <= mod->high_addr) + { + offset_idx = INTUSE(dwfl_module_relocate_address) (mod, &relative); + if (offset_idx < 0) + return -1; + } + if (offset_idx != idx) + { + __libdwfl_seterrno (DWFL_E_ADDR_OUTOFRANGE); + return -1; + } + } + + return 0; +} |