dwarf_pro_attr.c revision 260684 
1/*-
2 * Copyright (c) 2009 Kai Wang
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
27#include "_libdwarf.h"
28
29ELFTC_VCSID("$Id: dwarf_pro_attr.c 2074 2011-10-27 03:34:33Z jkoshy $");
30
31Dwarf_P_Attribute
32dwarf_add_AT_location_expr(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
33    Dwarf_P_Expr loc_expr, Dwarf_Error *error)
34{
35	Dwarf_Attribute at;
36
37	if (dbg == NULL || die == NULL || loc_expr == NULL) {
38		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
39		return (DW_DLV_BADADDR);
40	}
41
42	if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
43		return (DW_DLV_BADADDR);
44
45	at->at_die = die;
46	at->at_attrib = attr;
47	at->at_expr = loc_expr;
48
49	if (_dwarf_expr_into_block(loc_expr, error) != DW_DLE_NONE)
50		return (DW_DLV_BADADDR);
51	at->u[0].u64 = loc_expr->pe_length;
52	at->u[1].u8p = loc_expr->pe_block;
53	if (loc_expr->pe_length <= UCHAR_MAX)
54		at->at_form = DW_FORM_block1;
55	else if (loc_expr->pe_length <= USHRT_MAX)
56		at->at_form = DW_FORM_block2;
57	else if (loc_expr->pe_length <= UINT_MAX)
58		at->at_form = DW_FORM_block4;
59	else
60		at->at_form = DW_FORM_block;
61
62	STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
63
64	return (at);
65}
66
67Dwarf_P_Attribute
68dwarf_add_AT_name(Dwarf_P_Die die, char *name, Dwarf_Error *error)
69{
70	Dwarf_Attribute at;
71
72	if (_dwarf_add_string_attr(die, &at, DW_AT_name, name, error) !=
73	    DW_DLE_NONE)
74		return (DW_DLV_BADADDR);
75
76	return (at);
77}
78
79Dwarf_P_Attribute
80dwarf_add_AT_comp_dir(Dwarf_P_Die die, char *dir, Dwarf_Error *error)
81{
82	Dwarf_Attribute at;
83
84	if (_dwarf_add_string_attr(die, &at, DW_AT_comp_dir, dir, error) !=
85	    DW_DLE_NONE)
86		return (DW_DLV_BADADDR);
87
88	return (at);
89}
90
91Dwarf_P_Attribute
92dwarf_add_AT_producer(Dwarf_P_Die die, char *producer, Dwarf_Error *error)
93{
94	Dwarf_Attribute at;
95
96	if (_dwarf_add_string_attr(die, &at, DW_AT_producer, producer, error) !=
97	    DW_DLE_NONE)
98		return (DW_DLV_BADADDR);
99
100	return (at);
101}
102
103Dwarf_P_Attribute
104dwarf_add_AT_const_value_signedint(Dwarf_P_Die die, Dwarf_Signed value,
105    Dwarf_Error *error)
106{
107	Dwarf_Attribute at;
108	Dwarf_Debug dbg;
109
110	dbg = die != NULL ? die->die_dbg : NULL;
111
112	if (die == NULL) {
113		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
114		return (DW_DLV_BADADDR);
115	}
116
117	if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
118		return (DW_DLV_BADADDR);
119
120	at->at_die = die;
121	at->at_attrib = DW_AT_const_value;
122	at->at_form = DW_FORM_sdata;
123	at->u[0].s64 = value;
124
125	STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
126
127	return (at);
128}
129
130Dwarf_P_Attribute
131dwarf_add_AT_const_value_unsignedint(Dwarf_P_Die die, Dwarf_Unsigned value,
132    Dwarf_Error *error)
133{
134	Dwarf_Attribute at;
135	Dwarf_Debug dbg;
136
137	dbg = die != NULL ? die->die_dbg : NULL;
138
139	if (die == NULL) {
140		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
141		return (DW_DLV_BADADDR);
142	}
143
144	if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
145		return (DW_DLV_BADADDR);
146
147	at->at_die = die;
148	at->at_attrib = DW_AT_const_value;
149	at->at_form = DW_FORM_udata;
150	at->u[0].u64 = value;
151
152	STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
153
154	return (at);
155}
156
157Dwarf_P_Attribute
158dwarf_add_AT_const_value_string(Dwarf_P_Die die, char *string,
159    Dwarf_Error *error)
160{
161	Dwarf_Attribute at;
162
163	if (_dwarf_add_string_attr(die, &at, DW_AT_const_value, string,
164	    error) != DW_DLE_NONE)
165		return (DW_DLV_BADADDR);
166
167	return (at);
168}
169
170Dwarf_P_Attribute
171dwarf_add_AT_targ_address(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
172    Dwarf_Unsigned pc_value, Dwarf_Signed sym_index, Dwarf_Error *error)
173{
174
175	return (dwarf_add_AT_targ_address_b(dbg, die, attr, pc_value, sym_index,
176	    error));
177}
178
179Dwarf_P_Attribute
180dwarf_add_AT_targ_address_b(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
181    Dwarf_Unsigned pc_value, Dwarf_Unsigned sym_index, Dwarf_Error *error)
182{
183	Dwarf_Attribute at;
184
185	if (dbg == NULL || die == NULL) {
186		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
187		return (DW_DLV_BADADDR);
188	}
189
190	if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
191		return (DW_DLV_BADADDR);
192
193	at->at_die = die;
194	at->at_attrib = attr;
195	at->at_form = DW_FORM_addr;
196	at->at_relsym = sym_index;
197	at->u[0].u64 = pc_value;
198
199	STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
200
201	return (at);
202}
203
204Dwarf_P_Attribute
205dwarf_add_AT_dataref(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
206    Dwarf_Unsigned pc_value, Dwarf_Unsigned sym_index, Dwarf_Error *error)
207{
208	Dwarf_Attribute at;
209	int ret;
210
211	if (dbg == NULL || die == NULL) {
212		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
213		return (DW_DLV_BADADDR);
214	}
215
216	ret = _dwarf_add_AT_dataref(dbg, die, attr, pc_value, sym_index,
217	    NULL, &at, error);
218	if (ret != DW_DLE_NONE)
219		return (DW_DLV_BADADDR);
220
221	return (at);
222
223}
224
225Dwarf_P_Attribute
226dwarf_add_AT_ref_address(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
227    Dwarf_Unsigned pc_value, Dwarf_Unsigned sym_index, Dwarf_Error *error)
228{
229	Dwarf_Attribute at;
230
231	if (dbg == NULL || die == NULL) {
232		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
233		return (DW_DLV_BADADDR);
234	}
235
236	if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
237		return (DW_DLV_BADADDR);
238
239	at->at_die = die;
240	at->at_attrib = attr;
241	at->at_form = DW_FORM_ref_addr;
242	at->at_relsym = sym_index;
243	at->u[0].u64 = pc_value;
244
245	STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
246
247	return (at);
248}
249
250Dwarf_P_Attribute
251dwarf_add_AT_unsigned_const(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
252    Dwarf_Unsigned value, Dwarf_Error *error)
253{
254	Dwarf_Attribute at;
255
256	if (dbg == NULL || die == NULL) {
257		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
258		return (DW_DLV_BADADDR);
259	}
260
261	if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
262		return (DW_DLV_BADADDR);
263
264	at->at_die = die;
265	at->at_attrib = attr;
266	at->u[0].u64 = value;
267
268	if (value <= UCHAR_MAX)
269		at->at_form = DW_FORM_data1;
270	else if (value <= USHRT_MAX)
271		at->at_form = DW_FORM_data2;
272	else if (value <= UINT_MAX)
273		at->at_form = DW_FORM_data4;
274	else
275		at->at_form = DW_FORM_data8;
276
277	STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
278
279	return (at);
280}
281
282Dwarf_P_Attribute
283dwarf_add_AT_signed_const(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
284    Dwarf_Signed value, Dwarf_Error *error)
285{
286	Dwarf_Attribute at;
287
288	if (dbg == NULL || die == NULL) {
289		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
290		return (DW_DLV_BADADDR);
291	}
292
293	if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
294		return (DW_DLV_BADADDR);
295
296	at->at_die = die;
297	at->at_attrib = attr;
298	at->u[0].u64 = value;
299
300	if (value >= SCHAR_MIN && value <= SCHAR_MAX)
301		at->at_form = DW_FORM_data1;
302	else if (value >= SHRT_MIN && value <= SHRT_MAX)
303		at->at_form = DW_FORM_data2;
304	else if (value >= INT_MIN && value <= INT_MAX)
305		at->at_form = DW_FORM_data4;
306	else
307		at->at_form = DW_FORM_data8;
308
309	STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
310
311	return (at);
312}
313
314Dwarf_P_Attribute
315dwarf_add_AT_reference(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
316    Dwarf_P_Die ref_die, Dwarf_Error *error)
317{
318	Dwarf_Attribute at;
319
320	if (dbg == NULL || die == NULL) {
321		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
322		return (DW_DLV_BADADDR);
323	}
324
325	if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
326		return (DW_DLV_BADADDR);
327
328	at->at_die = die;
329	at->at_attrib = attr;
330	if (dbg->dbg_offset_size == 4)
331		at->at_form = DW_FORM_ref4;
332	else
333		at->at_form = DW_FORM_ref8;
334
335	at->at_refdie = ref_die;
336
337	STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
338
339	return (at);
340}
341
342Dwarf_P_Attribute
343dwarf_add_AT_flag(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
344    Dwarf_Small flag, Dwarf_Error *error)
345{
346	Dwarf_Attribute at;
347
348	if (dbg == NULL || die == NULL) {
349		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
350		return (DW_DLV_BADADDR);
351	}
352
353	if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
354		return (DW_DLV_BADADDR);
355
356	at->at_die = die;
357	at->at_attrib = attr;
358	at->at_form = DW_FORM_flag;
359	at->u[0].u64 = flag ? 1 : 0;
360
361	STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
362
363	return (at);
364}
365
366Dwarf_P_Attribute
367dwarf_add_AT_string(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
368    char *string, Dwarf_Error *error)
369{
370	Dwarf_Attribute at;
371
372	if (dbg == NULL || die == NULL) {
373		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
374		return (DW_DLV_BADADDR);
375	}
376
377	/* XXX Add DW_FORM_string style string instead? */
378
379	if (_dwarf_add_string_attr(die, &at, attr, string, error) !=
380	    DW_DLE_NONE)
381		return (DW_DLV_BADADDR);
382
383	return (at);
384}
385