2 * Copyright (c) 2007 John Birrell (jb@freebsd.org)
3 * Copyright (c) 2009 Kai Wang
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include "_libdwarf.h"
30 ELFTC_VCSID("$Id: dwarf_attr.c 3064 2014-06-06 19:35:55Z kaiwang27 $");
33 dwarf_attr(Dwarf_Die die, Dwarf_Half attr, Dwarf_Attribute *atp,
39 dbg = die != NULL ? die->die_dbg : NULL;
41 if (die == NULL || atp == NULL) {
42 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
43 return (DW_DLV_ERROR);
46 if ((at = _dwarf_attr_find(die, attr)) == NULL) {
47 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
48 return (DW_DLV_NO_ENTRY);
57 dwarf_attrlist(Dwarf_Die die, Dwarf_Attribute **attrbuf,
58 Dwarf_Signed *attrcount, Dwarf_Error *error)
64 dbg = die != NULL ? die->die_dbg : NULL;
66 if (die == NULL || attrbuf == NULL || attrcount == NULL) {
67 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
68 return (DW_DLV_ERROR);
71 if (die->die_ab->ab_atnum == 0) {
72 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
73 return (DW_DLV_NO_ENTRY);
76 *attrcount = die->die_ab->ab_atnum;
78 if (die->die_attrarray != NULL) {
79 *attrbuf = die->die_attrarray;
83 if ((die->die_attrarray = malloc(*attrcount * sizeof(Dwarf_Attribute)))
85 DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
86 return (DW_DLV_ERROR);
89 for (i = 0, at = STAILQ_FIRST(&die->die_attr);
90 i < *attrcount && at != NULL; i++, at = STAILQ_NEXT(at, at_next))
91 die->die_attrarray[i] = at;
93 *attrbuf = die->die_attrarray;
99 dwarf_hasattr(Dwarf_Die die, Dwarf_Half attr, Dwarf_Bool *ret_bool,
104 dbg = die != NULL ? die->die_dbg : NULL;
106 if (die == NULL || ret_bool == NULL) {
107 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
108 return (DW_DLV_ERROR);
111 *ret_bool = (_dwarf_attr_find(die, attr) != NULL);
117 dwarf_attroffset(Dwarf_Attribute at, Dwarf_Off *ret_off, Dwarf_Error *error)
121 dbg = at != NULL ? at->at_die->die_dbg : NULL;
123 if (at == NULL || ret_off == NULL) {
124 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
125 return (DW_DLV_ERROR);
128 *ret_off = at->at_offset;
134 dwarf_lowpc(Dwarf_Die die, Dwarf_Addr *ret_lowpc, Dwarf_Error *error)
139 dbg = die != NULL ? die->die_dbg : NULL;
141 if (die == NULL || ret_lowpc == NULL) {
142 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
143 return (DW_DLV_ERROR);
146 if ((at = _dwarf_attr_find(die, DW_AT_low_pc)) == NULL) {
147 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
148 return (DW_DLV_NO_ENTRY);
151 *ret_lowpc = at->u[0].u64;
157 dwarf_highpc(Dwarf_Die die, Dwarf_Addr *ret_highpc, Dwarf_Error *error)
160 return (dwarf_highpc_b(die, ret_highpc, NULL, NULL, error));
164 dwarf_highpc_b(Dwarf_Die die, Dwarf_Addr *ret_highpc, Dwarf_Half *ret_form,
165 enum Dwarf_Form_Class *ret_class, Dwarf_Error *error)
171 dbg = die != NULL ? die->die_dbg : NULL;
173 if (die == NULL || ret_highpc == NULL) {
174 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
175 return (DW_DLV_ERROR);
178 if ((at = _dwarf_attr_find(die, DW_AT_high_pc)) == NULL) {
179 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
180 return (DW_DLV_NO_ENTRY);
183 *ret_highpc = at->u[0].u64;
185 if (ret_form != NULL) {
186 *ret_form = at->at_form;
189 if (ret_class != NULL) {
191 *ret_class = dwarf_get_form_class(cu->cu_version,
192 DW_AT_high_pc, cu->cu_length_size == 4 ? 4 : 8,
200 dwarf_bytesize(Dwarf_Die die, Dwarf_Unsigned *ret_size, Dwarf_Error *error)
205 dbg = die != NULL ? die->die_dbg : NULL;
207 if (die == NULL || ret_size == NULL) {
208 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
209 return (DW_DLV_ERROR);
212 if ((at = _dwarf_attr_find(die, DW_AT_byte_size)) == NULL) {
213 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
214 return (DW_DLV_NO_ENTRY);
217 *ret_size = at->u[0].u64;
223 dwarf_bitsize(Dwarf_Die die, Dwarf_Unsigned *ret_size, Dwarf_Error *error)
228 dbg = die != NULL ? die->die_dbg : NULL;
230 if (die == NULL || ret_size == NULL) {
231 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
232 return (DW_DLV_ERROR);
235 if ((at = _dwarf_attr_find(die, DW_AT_bit_size)) == NULL) {
236 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
237 return (DW_DLV_NO_ENTRY);
240 *ret_size = at->u[0].u64;
246 dwarf_bitoffset(Dwarf_Die die, Dwarf_Unsigned *ret_size, Dwarf_Error *error)
251 dbg = die != NULL ? die->die_dbg : NULL;
253 if (die == NULL || ret_size == NULL) {
254 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
255 return (DW_DLV_ERROR);
258 if ((at = _dwarf_attr_find(die, DW_AT_bit_offset)) == NULL) {
259 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
260 return (DW_DLV_NO_ENTRY);
263 *ret_size = at->u[0].u64;
269 dwarf_srclang(Dwarf_Die die, Dwarf_Unsigned *ret_lang, Dwarf_Error *error)
274 dbg = die != NULL ? die->die_dbg : NULL;
276 if (die == NULL || ret_lang == NULL) {
277 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
278 return (DW_DLV_ERROR);
281 if ((at = _dwarf_attr_find(die, DW_AT_language)) == NULL) {
282 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
283 return (DW_DLV_NO_ENTRY);
286 *ret_lang = at->u[0].u64;
292 dwarf_arrayorder(Dwarf_Die die, Dwarf_Unsigned *ret_order, Dwarf_Error *error)
297 dbg = die != NULL ? die->die_dbg : NULL;
299 if (die == NULL || ret_order == NULL) {
300 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
301 return (DW_DLV_ERROR);
304 if ((at = _dwarf_attr_find(die, DW_AT_ordering)) == NULL) {
305 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
306 return (DW_DLV_NO_ENTRY);
309 *ret_order = at->u[0].u64;