Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame^] | 1 | /* Get specific attribute of abbreviation. |
| 2 | Copyright (C) 2003, 2004, 2005 Red Hat, Inc. |
| 3 | Written by Ulrich Drepper <drepper@redhat.com>, 2003. |
| 4 | |
| 5 | This program is Open Source software; you can redistribute it and/or |
| 6 | modify it under the terms of the Open Software License version 1.0 as |
| 7 | published by the Open Source Initiative. |
| 8 | |
| 9 | You should have received a copy of the Open Software License along |
| 10 | with this program; if not, you may obtain a copy of the Open Software |
| 11 | License version 1.0 from http://www.opensource.org/licenses/osl.php or |
| 12 | by writing the Open Source Initiative c/o Lawrence Rosen, Esq., |
| 13 | 3001 King Ranch Road, Ukiah, CA 95482. */ |
| 14 | |
| 15 | #ifdef HAVE_CONFIG_H |
| 16 | # include <config.h> |
| 17 | #endif |
| 18 | |
| 19 | #include <assert.h> |
| 20 | #include <dwarf.h> |
| 21 | #include "libdwP.h" |
| 22 | |
| 23 | |
| 24 | int |
| 25 | dwarf_getabbrevattr (abbrev, idx, namep, formp, offsetp) |
| 26 | Dwarf_Abbrev *abbrev; |
| 27 | size_t idx; |
| 28 | unsigned int *namep; |
| 29 | unsigned int *formp; |
| 30 | Dwarf_Off *offsetp; |
| 31 | { |
| 32 | if (abbrev == NULL) |
| 33 | return -1; |
| 34 | |
| 35 | size_t cnt = 0; |
| 36 | const unsigned char *attrp = abbrev->attrp; |
| 37 | const unsigned char *start_attrp; |
| 38 | unsigned int name; |
| 39 | unsigned int form; |
| 40 | |
| 41 | do |
| 42 | { |
| 43 | start_attrp = attrp; |
| 44 | |
| 45 | /* Attribute code and form are encoded as ULEB128 values. */ |
| 46 | get_uleb128 (name, attrp); |
| 47 | get_uleb128 (form, attrp); |
| 48 | |
| 49 | /* If both values are zero the index is out of range. */ |
| 50 | if (name == 0 && form == 0) |
| 51 | return -1; |
| 52 | } |
| 53 | while (cnt++ < idx); |
| 54 | |
| 55 | /* Store the result if requested. */ |
| 56 | if (namep != NULL) |
| 57 | *namep = name; |
| 58 | if (formp != NULL) |
| 59 | *formp = form; |
| 60 | if (offsetp != NULL) |
| 61 | *offsetp = (start_attrp - abbrev->attrp) + abbrev->offset; |
| 62 | |
| 63 | return 0; |
| 64 | } |