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1 : : /* Get specific attribute of abbreviation. 2 : : Copyright (C) 2003, 2004, 2005, 2014, 2017 Red Hat, Inc. 3 : : This file is part of elfutils. 4 : : Written by Ulrich Drepper <drepper@redhat.com>, 2003. 5 : : 6 : : This file is free software; you can redistribute it and/or modify 7 : : it under the terms of either 8 : : 9 : : * the GNU Lesser General Public License as published by the Free 10 : : Software Foundation; either version 3 of the License, or (at 11 : : your option) any later version 12 : : 13 : : or 14 : : 15 : : * the GNU General Public License as published by the Free 16 : : Software Foundation; either version 2 of the License, or (at 17 : : your option) any later version 18 : : 19 : : or both in parallel, as here. 20 : : 21 : : elfutils is distributed in the hope that it will be useful, but 22 : : WITHOUT ANY WARRANTY; without even the implied warranty of 23 : : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 24 : : General Public License for more details. 25 : : 26 : : You should have received copies of the GNU General Public License and 27 : : the GNU Lesser General Public License along with this program. If 28 : : not, see <http://www.gnu.org/licenses/>. */ 29 : : 30 : : #ifdef HAVE_CONFIG_H 31 : : # include <config.h> 32 : : #endif 33 : : 34 : : #include <assert.h> 35 : : #include <dwarf.h> 36 : : #include "libdwP.h" 37 : : 38 : : 39 : : int 40 : 894958 : dwarf_getabbrevattr_data (Dwarf_Abbrev *abbrev, size_t idx, 41 : : unsigned int *namep, unsigned int *formp, 42 : : Dwarf_Sword *datap, Dwarf_Off *offsetp) 43 : : { 44 [ - + ]: 894958 : if (abbrev == NULL) 45 : : return -1; 46 : : 47 : 894958 : size_t cnt = 0; 48 : 894958 : const unsigned char *attrp = abbrev->attrp; 49 : 3551154 : const unsigned char *start_attrp; 50 : 3551154 : unsigned int name; 51 : 3551154 : unsigned int form; 52 : 3551154 : Dwarf_Word data; 53 : : 54 : 3551154 : do 55 : : { 56 : 3551154 : start_attrp = attrp; 57 : : 58 : : /* Attribute code and form are encoded as ULEB128 values. 59 : : Already checked when Dwarf_Abbrev was created, read unchecked. */ 60 : 3551154 : get_uleb128_unchecked (name, attrp); 61 : 3551154 : get_uleb128_unchecked (form, attrp); 62 : : 63 [ + + ]: 3551154 : if (form == DW_FORM_implicit_const) 64 : 282042 : get_sleb128_unchecked (data, attrp); 65 : : else 66 : : data = 0; 67 : : 68 : : /* If both values are zero the index is out of range. */ 69 [ + + ]: 3551154 : if (name == 0 && form == 0) 70 : : return -1; 71 : : } 72 [ + + ]: 3394724 : while (cnt++ < idx); 73 : : 74 : : /* Store the result if requested. */ 75 [ + - ]: 738528 : if (namep != NULL) 76 : 738528 : *namep = name; 77 [ + - ]: 738528 : if (formp != NULL) 78 : 738528 : *formp = form; 79 [ + + ]: 738528 : if (datap != NULL) 80 : 738002 : *datap = data; 81 [ + - ]: 738528 : if (offsetp != NULL) 82 : 738528 : *offsetp = (start_attrp - abbrev->attrp) + abbrev->offset; 83 : : 84 : : return 0; 85 : : } 86 : : INTDEF(dwarf_getabbrevattr_data) 87 : : 88 : : int 89 : 526 : dwarf_getabbrevattr (Dwarf_Abbrev *abbrev, size_t idx, unsigned int *namep, 90 : : unsigned int *formp, Dwarf_Off *offsetp) 91 : : { 92 : 526 : return INTUSE(dwarf_getabbrevattr_data) (abbrev, idx, namep, formp, 93 : : NULL, offsetp); 94 : : }