Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 1 | /* Return .debug_info section global offset of reference associated with form. |
| 2 | Copyright (C) 2000, 2002 Red Hat, Inc. |
Ulrich Drepper | 361df7d | 2006-04-04 21:38:57 +0000 | [diff] [blame] | 3 | This file is part of Red Hat elfutils. |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 4 | Written by Ulrich Drepper <drepper@redhat.com>, 2000. |
| 5 | |
Ulrich Drepper | 361df7d | 2006-04-04 21:38:57 +0000 | [diff] [blame] | 6 | Red Hat elfutils is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by the |
| 8 | Free Software Foundation; version 2 of the License. |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 9 | |
Ulrich Drepper | 361df7d | 2006-04-04 21:38:57 +0000 | [diff] [blame] | 10 | Red Hat elfutils is distributed in the hope that it will be useful, but |
| 11 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License along |
| 16 | with Red Hat elfutils; if not, write to the Free Software Foundation, |
Ulrich Drepper | 1e9ef50 | 2006-04-04 22:29:06 +0000 | [diff] [blame] | 17 | Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. |
Ulrich Drepper | 361df7d | 2006-04-04 21:38:57 +0000 | [diff] [blame] | 18 | |
| 19 | Red Hat elfutils is an included package of the Open Invention Network. |
| 20 | An included package of the Open Invention Network is a package for which |
| 21 | Open Invention Network licensees cross-license their patents. No patent |
| 22 | license is granted, either expressly or impliedly, by designation as an |
| 23 | included package. Should you wish to participate in the Open Invention |
| 24 | Network licensing program, please visit www.openinventionnetwork.com |
| 25 | <http://www.openinventionnetwork.com>. */ |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 26 | |
| 27 | #ifdef HAVE_CONFIG_H |
| 28 | # include <config.h> |
| 29 | #endif |
| 30 | |
| 31 | #include <dwarf.h> |
| 32 | |
| 33 | #include <libdwarfP.h> |
| 34 | |
| 35 | |
| 36 | int |
| 37 | dwarf_global_formref (attr, return_offset, error) |
| 38 | Dwarf_Attribute attr; |
| 39 | Dwarf_Off *return_offset; |
| 40 | Dwarf_Error *error; |
| 41 | { |
| 42 | switch (attr->form) |
| 43 | { |
| 44 | case DW_FORM_ref1: |
| 45 | *return_offset = *attr->valp + attr->cu->offset; |
| 46 | break; |
| 47 | |
| 48 | case DW_FORM_ref2: |
| 49 | *return_offset = (read_2ubyte_unaligned (attr->cu->dbg, attr->valp) |
| 50 | + attr->cu->offset); |
| 51 | break; |
| 52 | |
| 53 | case DW_FORM_ref4: |
| 54 | *return_offset = (read_4ubyte_unaligned (attr->cu->dbg, attr->valp) |
| 55 | + attr->cu->offset); |
| 56 | break; |
| 57 | |
| 58 | case DW_FORM_ref8: |
| 59 | *return_offset = (read_8ubyte_unaligned (attr->cu->dbg, attr->valp) |
| 60 | + attr->cu->offset); |
| 61 | break; |
| 62 | |
| 63 | case DW_FORM_ref_udata: |
| 64 | { |
| 65 | Dwarf_Off off; |
| 66 | Dwarf_Small *attrp = attr->valp; |
| 67 | get_uleb128 (off, attrp); |
| 68 | *return_offset = off + attr->cu->offset; |
| 69 | } |
| 70 | break; |
| 71 | |
| 72 | case DW_FORM_ref_addr: |
| 73 | if (attr->cu->address_size == 4) |
| 74 | *return_offset = read_4ubyte_unaligned (attr->cu->dbg, attr->valp); |
| 75 | else |
| 76 | *return_offset = read_8ubyte_unaligned (attr->cu->dbg, attr->valp); |
| 77 | break; |
| 78 | |
| 79 | default: |
| 80 | __libdwarf_error (attr->cu->dbg, error, DW_E_NO_REFERENCE); |
| 81 | return DW_DLV_ERROR; |
| 82 | } |
| 83 | |
| 84 | return DW_DLV_OK; |
| 85 | } |