1b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper/* Return string associated with given attribute. 2443304efce95d66ac089d95807a0002cf8558d13Mark Wielaard Copyright (C) 2003-2010, 2013 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 Drepperconst char * 391ccdfb683ad6c7e59793136c3a657ddf131cafd1Mark Wielaarddwarf_formstring (Dwarf_Attribute *attrp) 40b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper{ 41b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper /* Ignore earlier errors. */ 42b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper if (attrp == NULL) 43b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper return NULL; 44b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 45b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper /* We found it. Now determine where the string is stored. */ 46b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper if (attrp->form == DW_FORM_string) 47b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper /* A simple inlined string. */ 48b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper return (const char *) attrp->valp; 49b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 50b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper Dwarf *dbg = attrp->cu->dbg; 51775375e3bd177cb19acb5020b6e0917551807276Mark Wielaard Dwarf *dbg_ret = attrp->form == DW_FORM_GNU_strp_alt ? dbg->alt_dwarf : dbg; 52b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 53775375e3bd177cb19acb5020b6e0917551807276Mark Wielaard if (unlikely (dbg_ret == NULL)) 54775375e3bd177cb19acb5020b6e0917551807276Mark Wielaard { 55775375e3bd177cb19acb5020b6e0917551807276Mark Wielaard __libdw_seterrno (DWARF_E_NO_ALT_DEBUGLINK); 56775375e3bd177cb19acb5020b6e0917551807276Mark Wielaard return NULL; 57775375e3bd177cb19acb5020b6e0917551807276Mark Wielaard } 58775375e3bd177cb19acb5020b6e0917551807276Mark Wielaard 59775375e3bd177cb19acb5020b6e0917551807276Mark Wielaard 60775375e3bd177cb19acb5020b6e0917551807276Mark Wielaard if (unlikely (attrp->form != DW_FORM_strp 61775375e3bd177cb19acb5020b6e0917551807276Mark Wielaard && attrp->form != DW_FORM_GNU_strp_alt) 62443304efce95d66ac089d95807a0002cf8558d13Mark Wielaard || dbg_ret->sectiondata[IDX_debug_str] == NULL) 63b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper { 64b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper __libdw_seterrno (DWARF_E_NO_STRING); 65b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper return NULL; 66b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper } 67b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 68b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper uint64_t off; 69775375e3bd177cb19acb5020b6e0917551807276Mark Wielaard if (__libdw_read_offset (dbg, dbg_ret, cu_sec_idx (attrp->cu), attrp->valp, 7099d2372b25d1231d786b70278478c7a112f2b27cUlrich Drepper attrp->cu->offset_size, &off, IDX_debug_str, 1)) 7199d2372b25d1231d786b70278478c7a112f2b27cUlrich Drepper return NULL; 72b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper 73775375e3bd177cb19acb5020b6e0917551807276Mark Wielaard return (const char *) dbg_ret->sectiondata[IDX_debug_str]->d_buf + off; 74b08d5a8fb42f4586d756068065186b5af7e48daUlrich Drepper} 75b08d5a8fb42f4586d756068065186b5af7e48daUlrich DrepperINTDEF(dwarf_formstring) 76