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
29 ELFTC_VCSID("$Id: dwarf_pro_attr.c 2074 2011-10-27 03:34:33Z jkoshy $");
30
31 Dwarf_P_Attribute
dwarf_add_AT_location_expr(Dwarf_P_Debug dbg,Dwarf_P_Die die,Dwarf_Half attr,Dwarf_P_Expr loc_expr,Dwarf_Error * error)32 dwarf_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
67 Dwarf_P_Attribute
dwarf_add_AT_name(Dwarf_P_Die die,char * name,Dwarf_Error * error)68 dwarf_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
79 Dwarf_P_Attribute
dwarf_add_AT_comp_dir(Dwarf_P_Die die,char * dir,Dwarf_Error * error)80 dwarf_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
91 Dwarf_P_Attribute
dwarf_add_AT_producer(Dwarf_P_Die die,char * producer,Dwarf_Error * error)92 dwarf_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
103 Dwarf_P_Attribute
dwarf_add_AT_const_value_signedint(Dwarf_P_Die die,Dwarf_Signed value,Dwarf_Error * error)104 dwarf_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
130 Dwarf_P_Attribute
dwarf_add_AT_const_value_unsignedint(Dwarf_P_Die die,Dwarf_Unsigned value,Dwarf_Error * error)131 dwarf_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
157 Dwarf_P_Attribute
dwarf_add_AT_const_value_string(Dwarf_P_Die die,char * string,Dwarf_Error * error)158 dwarf_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
170 Dwarf_P_Attribute
dwarf_add_AT_targ_address(Dwarf_P_Debug dbg,Dwarf_P_Die die,Dwarf_Half attr,Dwarf_Unsigned pc_value,Dwarf_Signed sym_index,Dwarf_Error * error)171 dwarf_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
179 Dwarf_P_Attribute
dwarf_add_AT_targ_address_b(Dwarf_P_Debug dbg,Dwarf_P_Die die,Dwarf_Half attr,Dwarf_Unsigned pc_value,Dwarf_Unsigned sym_index,Dwarf_Error * error)180 dwarf_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
204 Dwarf_P_Attribute
dwarf_add_AT_dataref(Dwarf_P_Debug dbg,Dwarf_P_Die die,Dwarf_Half attr,Dwarf_Unsigned pc_value,Dwarf_Unsigned sym_index,Dwarf_Error * error)205 dwarf_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
225 Dwarf_P_Attribute
dwarf_add_AT_ref_address(Dwarf_P_Debug dbg,Dwarf_P_Die die,Dwarf_Half attr,Dwarf_Unsigned pc_value,Dwarf_Unsigned sym_index,Dwarf_Error * error)226 dwarf_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
250 Dwarf_P_Attribute
dwarf_add_AT_unsigned_const(Dwarf_P_Debug dbg,Dwarf_P_Die die,Dwarf_Half attr,Dwarf_Unsigned value,Dwarf_Error * error)251 dwarf_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
282 Dwarf_P_Attribute
dwarf_add_AT_signed_const(Dwarf_P_Debug dbg,Dwarf_P_Die die,Dwarf_Half attr,Dwarf_Signed value,Dwarf_Error * error)283 dwarf_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
314 Dwarf_P_Attribute
dwarf_add_AT_reference(Dwarf_P_Debug dbg,Dwarf_P_Die die,Dwarf_Half attr,Dwarf_P_Die ref_die,Dwarf_Error * error)315 dwarf_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
342 Dwarf_P_Attribute
dwarf_add_AT_flag(Dwarf_P_Debug dbg,Dwarf_P_Die die,Dwarf_Half attr,Dwarf_Small flag,Dwarf_Error * error)343 dwarf_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
366 Dwarf_P_Attribute
dwarf_add_AT_string(Dwarf_P_Debug dbg,Dwarf_P_Die die,Dwarf_Half attr,char * string,Dwarf_Error * error)367 dwarf_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