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https://github.com/autc04/Retro68.git
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66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
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/* Validate an address and the relocatability of an offset from it.
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Copyright (C) 2005 Red Hat, Inc.
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This file is part of elfutils.
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This file is free software; you can redistribute it and/or modify
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it under the terms of either
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at
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your option) any later version
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or
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* the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at
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your option) any later version
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or both in parallel, as here.
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elfutils is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received copies of the GNU General Public License and
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the GNU Lesser General Public License along with this program. If
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not, see <http://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "libdwflP.h"
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int
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dwfl_validate_address (Dwfl *dwfl, Dwarf_Addr address, Dwarf_Sword offset)
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{
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Dwfl_Module *mod = INTUSE(dwfl_addrmodule) (dwfl, address);
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if (mod == NULL)
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return -1;
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Dwarf_Addr relative = address;
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int idx = INTUSE(dwfl_module_relocate_address) (mod, &relative);
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if (idx < 0)
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return -1;
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if (offset != 0)
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{
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int offset_idx = -1;
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relative = address + offset;
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if (relative >= mod->low_addr && relative <= mod->high_addr)
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{
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offset_idx = INTUSE(dwfl_module_relocate_address) (mod, &relative);
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if (offset_idx < 0)
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return -1;
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}
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if (offset_idx != idx)
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{
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__libdwfl_seterrno (DWFL_E_ADDR_OUTOFRANGE);
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return -1;
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}
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}
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return 0;
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}
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