100 lines
3.2 KiB
C
100 lines
3.2 KiB
C
/*-
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* Copyright (c) 2007 John Birrell (jb@freebsd.org)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "_libdwarf.h"
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ELFTC_VCSID("$Id: dwarf_cu.c 2072 2011-10-27 03:26:49Z jkoshy $");
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int
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dwarf_next_cu_header_b(Dwarf_Debug dbg, Dwarf_Unsigned *cu_length,
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Dwarf_Half *cu_version, Dwarf_Off *cu_abbrev_offset,
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Dwarf_Half *cu_pointer_size, Dwarf_Half *cu_offset_size,
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Dwarf_Half *cu_extension_size, Dwarf_Unsigned *cu_next_offset,
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Dwarf_Error *error)
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{
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Dwarf_CU cu;
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int ret;
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if (dbg == NULL) {
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DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
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return (DW_DLV_ERROR);
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}
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if (dbg->dbg_cu_current == NULL)
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ret = _dwarf_info_first_cu(dbg, error);
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else
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ret = _dwarf_info_next_cu(dbg, error);
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if (ret == DW_DLE_NO_ENTRY) {
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DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
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return (DW_DLV_NO_ENTRY);
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} else if (ret != DW_DLE_NONE)
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return (DW_DLV_ERROR);
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if (dbg->dbg_cu_current == NULL) {
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DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
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return (DW_DLV_NO_ENTRY);
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}
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cu = dbg->dbg_cu_current;
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if (cu_length)
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*cu_length = cu->cu_length;
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if (cu_version)
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*cu_version = cu->cu_version;
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if (cu_abbrev_offset)
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*cu_abbrev_offset = (Dwarf_Off) cu->cu_abbrev_offset;
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if (cu_pointer_size)
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*cu_pointer_size = cu->cu_pointer_size;
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if (cu_offset_size) {
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if (cu->cu_length_size == 4)
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*cu_offset_size = 4;
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else
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*cu_offset_size = 8;
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}
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if (cu_extension_size) {
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if (cu->cu_length_size == 4)
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*cu_extension_size = 0;
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else
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*cu_extension_size = 4;
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}
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if (cu_next_offset)
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*cu_next_offset = dbg->dbg_cu_current->cu_next_offset;
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return (DW_DLV_OK);
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}
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int
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dwarf_next_cu_header(Dwarf_Debug dbg, Dwarf_Unsigned *cu_length,
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Dwarf_Half *cu_version, Dwarf_Off *cu_abbrev_offset,
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Dwarf_Half *cu_pointer_size, Dwarf_Unsigned *cu_next_offset,
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Dwarf_Error *error)
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{
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return (dwarf_next_cu_header_b(dbg, cu_length, cu_version,
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cu_abbrev_offset, cu_pointer_size, NULL, NULL, cu_next_offset,
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error));
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}
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