137 lines
3.7 KiB
C
137 lines
3.7 KiB
C
/*-
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* Copyright (c) 2009,2011 Kai Wang
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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_abbrev.c 2072 2011-10-27 03:26:49Z jkoshy $");
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int
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dwarf_get_abbrev(Dwarf_Debug dbg, Dwarf_Unsigned offset,
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Dwarf_Abbrev *return_abbrev, Dwarf_Unsigned *length,
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Dwarf_Unsigned *attr_count, Dwarf_Error *error)
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{
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Dwarf_Abbrev ab;
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int ret;
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if (dbg == NULL || return_abbrev == NULL || length == NULL ||
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attr_count == 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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ret = _dwarf_abbrev_parse(dbg, NULL, &offset, &ab, error);
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if (ret != DW_DLE_NONE) {
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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
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return (DW_DLV_ERROR);
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}
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*return_abbrev = ab;
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*length = ab->ab_length;
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*attr_count = ab->ab_atnum;
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return (DW_DLV_OK);
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}
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int
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dwarf_get_abbrev_tag(Dwarf_Abbrev abbrev, Dwarf_Half *return_tag,
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Dwarf_Error *error)
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{
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if (abbrev == NULL || return_tag == NULL) {
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DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
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return (DW_DLV_ERROR);
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}
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*return_tag = (Dwarf_Half) abbrev->ab_tag;
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return (DW_DLV_OK);
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}
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int
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dwarf_get_abbrev_code(Dwarf_Abbrev abbrev, Dwarf_Unsigned *return_code,
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Dwarf_Error *error)
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{
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if (abbrev == NULL || return_code == NULL) {
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DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
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return (DW_DLV_ERROR);
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}
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*return_code = abbrev->ab_entry;
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return (DW_DLV_OK);
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}
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int
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dwarf_get_abbrev_children_flag(Dwarf_Abbrev abbrev, Dwarf_Signed *return_flag,
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Dwarf_Error *error)
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{
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if (abbrev == NULL || return_flag == NULL) {
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DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
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return (DW_DLV_ERROR);
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}
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*return_flag = (Dwarf_Signed) abbrev->ab_children;
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return (DW_DLV_OK);
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}
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int
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dwarf_get_abbrev_entry(Dwarf_Abbrev abbrev, Dwarf_Signed ndx,
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Dwarf_Half *attr_num, Dwarf_Signed *form, Dwarf_Off *offset,
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Dwarf_Error *error)
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{
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Dwarf_AttrDef ad;
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int i;
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if (abbrev == NULL || attr_num == NULL || form == NULL ||
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offset == NULL) {
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DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
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return (DW_DLV_ERROR);
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}
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if (ndx < 0 || (uint64_t) ndx >= abbrev->ab_atnum) {
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DWARF_SET_ERROR(NULL, error, DW_DLE_NO_ENTRY);
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return (DW_DLV_NO_ENTRY);
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}
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ad = STAILQ_FIRST(&abbrev->ab_attrdef);
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for (i = 0; i < ndx && ad != NULL; i++)
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ad = STAILQ_NEXT(ad, ad_next);
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assert(ad != NULL);
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*attr_num = ad->ad_attrib;
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*form = ad->ad_form;
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*offset = ad->ad_offset;
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return (DW_DLV_OK);
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}
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