1/* $NetBSD: dwarf_cu.c,v 1.2 2010/02/22 11:01:29 darran Exp $ */ 2 3/*- 4 * Copyright (c) 2007 John Birrell (jb@freebsd.org) 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD: src/lib/libdwarf/dwarf_cu.c,v 1.1.4.1 2009/08/03 08:13:06 kensmith Exp $ 29 */ 30 31#if HAVE_NBTOOL_CONFIG_H 32#include "nbtool_config.h" 33#endif 34 35#include "_libdwarf.h" 36 37int 38dwarf_next_cu_header(Dwarf_Debug dbg, Dwarf_Unsigned *cu_header_length, 39 Dwarf_Half *cu_version, Dwarf_Unsigned *cu_abbrev_offset, 40 Dwarf_Half *cu_pointer_size, Dwarf_Unsigned *cu_next_offset, Dwarf_Error *error) 41{ 42 Dwarf_CU next; 43 44 if (error == NULL) 45 return DWARF_E_ERROR; 46 47 if (dbg == NULL || cu_header_length == NULL || cu_version == NULL || 48 cu_abbrev_offset == NULL || cu_pointer_size == NULL || 49 cu_next_offset == NULL) { 50 DWARF_SET_ERROR(error, DWARF_E_ARGUMENT); 51 return DWARF_E_ERROR; 52 } 53 54 if (dbg->dbg_cu_current == NULL) 55 dbg->dbg_cu_current = STAILQ_FIRST(&dbg->dbg_cu); 56 else if ((next = STAILQ_NEXT(dbg->dbg_cu_current, cu_next)) == NULL) { 57 DWARF_SET_ERROR(error, DWARF_E_NO_ENTRY); 58 return DWARF_E_NO_ENTRY; 59 } else 60 dbg->dbg_cu_current = next; 61 62 if (dbg->dbg_cu_current == NULL) { 63 DWARF_SET_ERROR(error, DWARF_E_NO_ENTRY); 64 return DWARF_E_NO_ENTRY; 65 } 66 67 *cu_header_length = dbg->dbg_cu_current->cu_header_length; 68 *cu_version = dbg->dbg_cu_current->cu_version; 69 *cu_abbrev_offset = dbg->dbg_cu_current->cu_abbrev_offset; 70 *cu_pointer_size = dbg->dbg_cu_current->cu_pointer_size; 71 *cu_next_offset = dbg->dbg_cu_current->cu_next_offset; 72 73 return DWARF_E_NONE; 74} 75