| /* Return compile-unit relative offset of reference associated with form. |
| Copyright (C) 2000, 2002 Red Hat, Inc. |
| Written by Ulrich Drepper <drepper@redhat.com>, 2000. |
| |
| This program is Open Source software; you can redistribute it and/or |
| modify it under the terms of the Open Software License version 1.0 as |
| published by the Open Source Initiative. |
| |
| You should have received a copy of the Open Software License along |
| with this program; if not, you may obtain a copy of the Open Software |
| License version 1.0 from http://www.opensource.org/licenses/osl.php or |
| by writing the Open Source Initiative c/o Lawrence Rosen, Esq., |
| 3001 King Ranch Road, Ukiah, CA 95482. */ |
| |
| #ifdef HAVE_CONFIG_H |
| # include <config.h> |
| #endif |
| |
| #include <dwarf.h> |
| |
| #include <libdwarfP.h> |
| |
| |
| int |
| dwarf_formref (attr, return_offset, error) |
| Dwarf_Attribute attr; |
| Dwarf_Off *return_offset; |
| Dwarf_Error *error; |
| { |
| switch (attr->form) |
| { |
| case DW_FORM_ref1: |
| *return_offset = *attr->valp; |
| break; |
| |
| case DW_FORM_ref2: |
| *return_offset = read_2ubyte_unaligned (attr->cu->dbg, attr->valp); |
| break; |
| |
| case DW_FORM_ref4: |
| *return_offset = read_4ubyte_unaligned (attr->cu->dbg, attr->valp); |
| break; |
| |
| case DW_FORM_ref8: |
| *return_offset = read_8ubyte_unaligned (attr->cu->dbg, attr->valp); |
| break; |
| |
| case DW_FORM_ref_udata: |
| { |
| Dwarf_Off off; |
| Dwarf_Small *attrp = attr->valp; |
| get_uleb128 (off, attrp); |
| *return_offset = off; |
| } |
| break; |
| |
| case DW_FORM_ref_addr: |
| __libdwarf_error (attr->cu->dbg, error, DW_E_INVALID_REFERENCE); |
| return DW_DLV_ERROR; |
| |
| default: |
| __libdwarf_error (attr->cu->dbg, error, DW_E_NO_REFERENCE); |
| return DW_DLV_ERROR; |
| } |
| |
| return DW_DLV_OK; |
| } |