125b3c049e70834cf33790a28643ab058b507b35cBen Cheng/* Validate an address and the relocatability of an offset from it. 225b3c049e70834cf33790a28643ab058b507b35cBen Cheng Copyright (C) 2005 Red Hat, Inc. 303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes This file is part of elfutils. 425b3c049e70834cf33790a28643ab058b507b35cBen Cheng 503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes This file is free software; you can redistribute it and/or modify 603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes it under the terms of either 725b3c049e70834cf33790a28643ab058b507b35cBen Cheng 803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes * the GNU Lesser General Public License as published by the Free 903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes Software Foundation; either version 3 of the License, or (at 1003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes your option) any later version 1103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 1203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes or 1303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 1403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes * the GNU General Public License as published by the Free 1503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes Software Foundation; either version 2 of the License, or (at 1603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes your option) any later version 1703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 1803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes or both in parallel, as here. 1903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 2003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes elfutils is distributed in the hope that it will be useful, but 2125b3c049e70834cf33790a28643ab058b507b35cBen Cheng WITHOUT ANY WARRANTY; without even the implied warranty of 2225b3c049e70834cf33790a28643ab058b507b35cBen Cheng MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 2325b3c049e70834cf33790a28643ab058b507b35cBen Cheng General Public License for more details. 2425b3c049e70834cf33790a28643ab058b507b35cBen Cheng 2503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes You should have received copies of the GNU General Public License and 2603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes the GNU Lesser General Public License along with this program. If 2703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes not, see <http://www.gnu.org/licenses/>. */ 2825b3c049e70834cf33790a28643ab058b507b35cBen Cheng 2925b3c049e70834cf33790a28643ab058b507b35cBen Cheng#include "libdwflP.h" 3025b3c049e70834cf33790a28643ab058b507b35cBen Cheng 3125b3c049e70834cf33790a28643ab058b507b35cBen Chengint 3225b3c049e70834cf33790a28643ab058b507b35cBen Chengdwfl_validate_address (Dwfl *dwfl, Dwarf_Addr address, Dwarf_Sword offset) 3325b3c049e70834cf33790a28643ab058b507b35cBen Cheng{ 3425b3c049e70834cf33790a28643ab058b507b35cBen Cheng Dwfl_Module *mod = INTUSE(dwfl_addrmodule) (dwfl, address); 3525b3c049e70834cf33790a28643ab058b507b35cBen Cheng if (mod == NULL) 3625b3c049e70834cf33790a28643ab058b507b35cBen Cheng return -1; 3725b3c049e70834cf33790a28643ab058b507b35cBen Cheng 3825b3c049e70834cf33790a28643ab058b507b35cBen Cheng Dwarf_Addr relative = address; 3925b3c049e70834cf33790a28643ab058b507b35cBen Cheng int idx = INTUSE(dwfl_module_relocate_address) (mod, &relative); 4025b3c049e70834cf33790a28643ab058b507b35cBen Cheng if (idx < 0) 4125b3c049e70834cf33790a28643ab058b507b35cBen Cheng return -1; 4225b3c049e70834cf33790a28643ab058b507b35cBen Cheng 4325b3c049e70834cf33790a28643ab058b507b35cBen Cheng if (offset != 0) 4425b3c049e70834cf33790a28643ab058b507b35cBen Cheng { 4525b3c049e70834cf33790a28643ab058b507b35cBen Cheng int offset_idx = -1; 4625b3c049e70834cf33790a28643ab058b507b35cBen Cheng relative = address + offset; 4725b3c049e70834cf33790a28643ab058b507b35cBen Cheng if (relative >= mod->low_addr && relative <= mod->high_addr) 4825b3c049e70834cf33790a28643ab058b507b35cBen Cheng { 4925b3c049e70834cf33790a28643ab058b507b35cBen Cheng offset_idx = INTUSE(dwfl_module_relocate_address) (mod, &relative); 5025b3c049e70834cf33790a28643ab058b507b35cBen Cheng if (offset_idx < 0) 5125b3c049e70834cf33790a28643ab058b507b35cBen Cheng return -1; 5225b3c049e70834cf33790a28643ab058b507b35cBen Cheng } 5325b3c049e70834cf33790a28643ab058b507b35cBen Cheng if (offset_idx != idx) 5425b3c049e70834cf33790a28643ab058b507b35cBen Cheng { 5525b3c049e70834cf33790a28643ab058b507b35cBen Cheng __libdwfl_seterrno (DWFL_E_ADDR_OUTOFRANGE); 5625b3c049e70834cf33790a28643ab058b507b35cBen Cheng return -1; 5725b3c049e70834cf33790a28643ab058b507b35cBen Cheng } 5825b3c049e70834cf33790a28643ab058b507b35cBen Cheng } 5925b3c049e70834cf33790a28643ab058b507b35cBen Cheng 6025b3c049e70834cf33790a28643ab058b507b35cBen Cheng return 0; 6125b3c049e70834cf33790a28643ab058b507b35cBen Cheng} 62