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65 lines
1.8 KiB
65 lines
1.8 KiB
/* 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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