| Brian Silverman | 8649792 | 2018-02-10 19:28:39 -0500 | [diff] [blame] | 1 | /* Check whether given DIE has specific attribute. |
| 2 | Copyright (C) 2003, 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 <dwarf.h> |
| 35 | #include "libdwP.h" |
| 36 | |
| 37 | |
| 38 | int |
| 39 | dwarf_hasattr (Dwarf_Die *die, unsigned int search_name) |
| 40 | { |
| 41 | if (die == NULL) |
| 42 | return 0; |
| 43 | |
| 44 | /* Find the abbreviation entry. */ |
| 45 | Dwarf_Abbrev *abbrevp = __libdw_dieabbrev (die, NULL); |
| 46 | if (unlikely (abbrevp == DWARF_END_ABBREV)) |
| 47 | { |
| 48 | __libdw_seterrno (DWARF_E_INVALID_DWARF); |
| 49 | return 0; |
| 50 | } |
| 51 | |
| 52 | /* Search the name attribute. Dwarf_Abbrev was checked when created, |
| 53 | so we can read unchecked here. */ |
| 54 | const unsigned char *attrp = abbrevp->attrp; |
| 55 | while (1) |
| 56 | { |
| 57 | /* Get attribute name and form. */ |
| 58 | unsigned int attr_name; |
| 59 | get_uleb128_unchecked (attr_name, attrp); |
| 60 | unsigned int attr_form; |
| 61 | get_uleb128_unchecked (attr_form, attrp); |
| 62 | |
| 63 | /* We can stop if we found the attribute with value zero. */ |
| 64 | if (attr_name == 0 || attr_form == 0) |
| 65 | return 0; |
| 66 | |
| 67 | if (attr_name == search_name) |
| 68 | return 1; |
| 69 | } |
| 70 | } |
| 71 | INTDEF (dwarf_hasattr) |