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/*-
* Copyright (c) 2007 John Birrell (jb@freebsd.org)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: src/lib/libdwarf/dwarf_cu.c,v 1.1.4.1.6.1 2010/12/21 17:09:25 kensmith Exp $
*/
#include "_libdwarf.h"
int
dwarf_next_cu_header(Dwarf_Debug dbg, Dwarf_Unsigned *cu_header_length,
Dwarf_Half *cu_version, Dwarf_Unsigned *cu_abbrev_offset,
Dwarf_Half *cu_pointer_size, Dwarf_Unsigned *cu_next_offset, Dwarf_Error *error)
{
Dwarf_CU next;
if (error == NULL)
return DWARF_E_ERROR;
if (dbg == NULL || cu_header_length == NULL || cu_version == NULL ||
cu_abbrev_offset == NULL || cu_pointer_size == NULL ||
cu_next_offset == NULL) {
DWARF_SET_ERROR(error, DWARF_E_ARGUMENT);
return DWARF_E_ERROR;
}
if (dbg->dbg_cu_current == NULL)
dbg->dbg_cu_current = STAILQ_FIRST(&dbg->dbg_cu);
else if ((next = STAILQ_NEXT(dbg->dbg_cu_current, cu_next)) == NULL) {
DWARF_SET_ERROR(error, DWARF_E_NO_ENTRY);
return DWARF_E_NO_ENTRY;
} else
dbg->dbg_cu_current = next;
if (dbg->dbg_cu_current == NULL) {
DWARF_SET_ERROR(error, DWARF_E_NO_ENTRY);
return DWARF_E_NO_ENTRY;
}
*cu_header_length = dbg->dbg_cu_current->cu_header_length;
*cu_version = dbg->dbg_cu_current->cu_version;
*cu_abbrev_offset = dbg->dbg_cu_current->cu_abbrev_offset;
*cu_pointer_size = dbg->dbg_cu_current->cu_pointer_size;
*cu_next_offset = dbg->dbg_cu_current->cu_next_offset;
return DWARF_E_NONE;
}
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