source: rtems-tools/rtemstoolkit/elftoolchain/libdwarf/dwarf_pro_attr.c @ 4bb3996

5
Last change on this file since 4bb3996 was 4bb3996, checked in by Chris Johns <chrisj@…>, on 04/30/18 at 05:34:48

rtemstoolkit: Add libdwarf from elftoolchain.

The code is taken from:

​https://svn.code.sf.net/p/elftoolchain/code/trunk

Update #3417
  • Property mode set to 100644
File size: 9.3 KB
Line 
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}
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