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