dwarf_highpc.c revision de2ed97f33139af5c7a0811e4ec66fc896a13cf2
1b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper/* Return high PC attribute of DIE. 2547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard Copyright (C) 2003, 2005, 2012 Red Hat, Inc. 3de2ed97f33139af5c7a0811e4ec66fc896a13cf2Mark Wielaard This file is part of elfutils. 4b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper Written by Ulrich Drepper <drepper@redhat.com>, 2003. 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 <dwarf.h> 35b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper#include "libdwP.h" 36b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 37b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 38b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepperint 39b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepperdwarf_highpc (die, return_addr) 40b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper Dwarf_Die *die; 41b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper Dwarf_Addr *return_addr; 42b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper{ 43547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard Dwarf_Attribute attr_high_mem; 44547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard Dwarf_Attribute *attr_high = INTUSE(dwarf_attr) (die, DW_AT_high_pc, 45547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard &attr_high_mem); 46547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard if (attr_high == NULL) 47547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard return -1; 48b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 49547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard if (attr_high->form == DW_FORM_addr) 50547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard return INTUSE(dwarf_formaddr) (attr_high, return_addr); 51547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard 52547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard /* DWARF 4 allows high_pc to be a constant offset from low_pc. */ 53547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard Dwarf_Attribute attr_low_mem; 54547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard if (INTUSE(dwarf_formaddr) (INTUSE(dwarf_attr) (die, DW_AT_low_pc, 55547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard &attr_low_mem), 56547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard return_addr) == 0) 57547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard { 58547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard Dwarf_Word uval; 59547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard if (INTUSE(dwarf_formudata) (attr_high, &uval) == 0) 60547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard { 61547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard *return_addr += uval; 62547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard return 0; 63547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard } 64547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard __libdw_seterrno (DWARF_E_NO_ADDR); 65547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard } 66547972539ecbe8668e89d891d86cef10f0302fd5Mark Wielaard return -1; 67b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper} 68b08d5a8fb42f4586d756068065186b5af7e48daUlrich DrepperINTDEF(dwarf_highpc) 69