1b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper/* Return DIE at given offset. 22b1f09548b66c2c75d5be6f13cd9374adc95f8d8Roland McGrath Copyright (C) 2002-2010 Red Hat, Inc. 3de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard This file is part of elfutils. 4b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper Written by Ulrich Drepper <drepper@redhat.com>, 2002. 5b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 6de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard This file is free software; you can redistribute it and/or modify 7de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard it under the terms of either 8b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 9de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard * the GNU Lesser General Public License as published by the Free 10de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard Software Foundation; either version 3 of the License, or (at 11de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard your option) any later version 12de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard 13de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard or 14de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard 15de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard * the GNU General Public License as published by the Free 16de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard Software Foundation; either version 2 of the License, or (at 17de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard your option) any later version 18de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard 19de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard or both in parallel, as here. 20de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard 21de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard elfutils is distributed in the hope that it will be useful, but 22361df7da6dfecd817b27e62b91752ac316d7cdd4Ulrich Drepper WITHOUT ANY WARRANTY; without even the implied warranty of 23361df7da6dfecd817b27e62b91752ac316d7cdd4Ulrich Drepper MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 24361df7da6dfecd817b27e62b91752ac316d7cdd4Ulrich Drepper General Public License for more details. 25361df7da6dfecd817b27e62b91752ac316d7cdd4Ulrich Drepper 26de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard You should have received copies of the GNU General Public License and 27de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard the GNU Lesser General Public License along with this program. If 28de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard not, see <http://www.gnu.org/licenses/>. */ 29b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 30b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper#ifdef HAVE_CONFIG_H 31b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper# include <config.h> 32b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper#endif 33b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 34b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper#include <string.h> 35b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper#include "libdwP.h" 36b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 37b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 38932585d2385c9d4e5686e4ddc9ba30c68172d7f3Roland McGrathDwarf_Die * 39932585d2385c9d4e5686e4ddc9ba30c68172d7f3Roland McGrathinternal_function 40932585d2385c9d4e5686e4ddc9ba30c68172d7f3Roland McGrath__libdw_offdie (Dwarf *dbg, Dwarf_Off offset, Dwarf_Die *result, 41932585d2385c9d4e5686e4ddc9ba30c68172d7f3Roland McGrath bool debug_types) 42b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper{ 43b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper if (dbg == NULL) 44b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper return NULL; 45b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 462b1f09548b66c2c75d5be6f13cd9374adc95f8d8Roland McGrath Elf_Data *const data = dbg->sectiondata[debug_types ? IDX_debug_types 472b1f09548b66c2c75d5be6f13cd9374adc95f8d8Roland McGrath : IDX_debug_info]; 482b1f09548b66c2c75d5be6f13cd9374adc95f8d8Roland McGrath if (offset >= data->d_size) 49b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper { 50b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper __libdw_seterrno (DWARF_E_INVALID_DWARF); 51b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper return NULL; 52b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper } 53b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 54b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper /* Clear the entire DIE structure. This signals we have not yet 55b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper determined any of the information. */ 56b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper memset (result, '\0', sizeof (Dwarf_Die)); 57b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 582b1f09548b66c2c75d5be6f13cd9374adc95f8d8Roland McGrath result->addr = (char *) data->d_buf + offset; 59b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 60b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper /* Get the CU. */ 612b1f09548b66c2c75d5be6f13cd9374adc95f8d8Roland McGrath result->cu = __libdw_findcu (dbg, offset, debug_types); 62b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper if (result->cu == NULL) 63b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper { 64b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper /* This should never happen. The input file is malformed. */ 65b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper __libdw_seterrno (DWARF_E_INVALID_DWARF); 66b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper result = NULL; 67b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper } 68b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 69b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper return result; 70b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper} 712b1f09548b66c2c75d5be6f13cd9374adc95f8d8Roland McGrath 722b1f09548b66c2c75d5be6f13cd9374adc95f8d8Roland McGrath 732b1f09548b66c2c75d5be6f13cd9374adc95f8d8Roland McGrathDwarf_Die * 741ccdfb683ad6c7e59793136c3a657ddf131cafd1Mark Wielaarddwarf_offdie (Dwarf *dbg, Dwarf_Off offset, Dwarf_Die *result) 752b1f09548b66c2c75d5be6f13cd9374adc95f8d8Roland McGrath{ 76932585d2385c9d4e5686e4ddc9ba30c68172d7f3Roland McGrath return __libdw_offdie (dbg, offset, result, false); 772b1f09548b66c2c75d5be6f13cd9374adc95f8d8Roland McGrath} 78b08d5a8fb42f4586d756068065186b5af7e48daUlrich DrepperINTDEF(dwarf_offdie) 792b1f09548b66c2c75d5be6f13cd9374adc95f8d8Roland McGrath 802b1f09548b66c2c75d5be6f13cd9374adc95f8d8Roland McGrathDwarf_Die * 811ccdfb683ad6c7e59793136c3a657ddf131cafd1Mark Wielaarddwarf_offdie_types (Dwarf *dbg, Dwarf_Off offset, Dwarf_Die *result) 822b1f09548b66c2c75d5be6f13cd9374adc95f8d8Roland McGrath{ 83932585d2385c9d4e5686e4ddc9ba30c68172d7f3Roland McGrath return __libdw_offdie (dbg, offset, result, true); 842b1f09548b66c2c75d5be6f13cd9374adc95f8d8Roland McGrath} 85