Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame^] | 1 | /* Return signed constant represented by attribute. |
| 2 | Copyright (C) 2003, 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 <dwarf.h> |
| 20 | #include "libdwP.h" |
| 21 | |
| 22 | |
| 23 | int |
| 24 | dwarf_formsdata (attr, return_sval) |
| 25 | Dwarf_Attribute *attr; |
| 26 | Dwarf_Sword *return_sval; |
| 27 | { |
| 28 | if (attr == NULL) |
| 29 | return -1; |
| 30 | |
| 31 | const unsigned char *datap; |
| 32 | |
| 33 | switch (attr->form) |
| 34 | { |
| 35 | case DW_FORM_data1: |
| 36 | *return_sval = *attr->valp; |
| 37 | break; |
| 38 | |
| 39 | case DW_FORM_data2: |
| 40 | *return_sval = read_2ubyte_unaligned (attr->cu->dbg, attr->valp); |
| 41 | break; |
| 42 | |
| 43 | case DW_FORM_data4: |
| 44 | *return_sval = read_4ubyte_unaligned (attr->cu->dbg, attr->valp); |
| 45 | break; |
| 46 | |
| 47 | case DW_FORM_data8: |
| 48 | *return_sval = read_8ubyte_unaligned (attr->cu->dbg, attr->valp); |
| 49 | break; |
| 50 | |
| 51 | case DW_FORM_sdata: |
| 52 | datap = attr->valp; |
| 53 | get_sleb128 (*return_sval, datap); |
| 54 | break; |
| 55 | |
| 56 | case DW_FORM_udata: |
| 57 | datap = attr->valp; |
| 58 | get_uleb128 (*return_sval, datap); |
| 59 | break; |
| 60 | |
| 61 | default: |
| 62 | __libdw_seterrno (DWARF_E_NO_CONSTANT); |
| 63 | return -1; |
| 64 | } |
| 65 | |
| 66 | return 0; |
| 67 | } |
| 68 | INTDEF(dwarf_formsdata) |