1 /*-
2 * Copyright (c) 2009,2011 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_lineno.c 2983 2014-02-09 00:24:31Z kaiwang27 $");
30
31 int
dwarf_srclines(Dwarf_Die die,Dwarf_Line ** linebuf,Dwarf_Signed * linecount,Dwarf_Error * error)32 dwarf_srclines(Dwarf_Die die, Dwarf_Line **linebuf, Dwarf_Signed *linecount,
33 Dwarf_Error *error)
34 {
35 Dwarf_LineInfo li;
36 Dwarf_Debug dbg;
37 Dwarf_Line ln;
38 Dwarf_CU cu;
39 Dwarf_Attribute at;
40 int i;
41
42 dbg = die != NULL ? die->die_dbg : NULL;
43
44 if (die == NULL || linebuf == NULL || linecount == NULL) {
45 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
46 return (DW_DLV_ERROR);
47 }
48
49 if ((at = _dwarf_attr_find(die, DW_AT_stmt_list)) == NULL) {
50 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
51 return (DW_DLV_NO_ENTRY);
52 }
53
54 cu = die->die_cu;
55 if (cu->cu_lineinfo == NULL) {
56 if (_dwarf_lineno_init(die, at->u[0].u64, error) !=
57 DW_DLE_NONE)
58 return (DW_DLV_ERROR);
59 }
60 if (cu->cu_lineinfo == NULL) {
61 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
62 return (DW_DLV_NO_ENTRY);
63 }
64
65 li = cu->cu_lineinfo;
66 *linecount = (Dwarf_Signed) li->li_lnlen;
67
68 if (*linecount == 0) {
69 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
70 return (DW_DLV_NO_ENTRY);
71 }
72
73 if (li->li_lnarray != NULL) {
74 *linebuf = li->li_lnarray;
75 return (DW_DLV_OK);
76 }
77
78 if ((li->li_lnarray = malloc(*linecount * sizeof(Dwarf_Line))) ==
79 NULL) {
80 DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
81 return (DW_DLV_ERROR);
82 }
83
84 for (i = 0, ln = STAILQ_FIRST(&li->li_lnlist);
85 i < *linecount && ln != NULL; i++, ln = STAILQ_NEXT(ln, ln_next))
86 li->li_lnarray[i] = ln;
87
88 *linebuf = li->li_lnarray;
89
90 return (DW_DLV_OK);
91 }
92
93 int
dwarf_srcfiles(Dwarf_Die die,char *** srcfiles,Dwarf_Signed * srccount,Dwarf_Error * error)94 dwarf_srcfiles(Dwarf_Die die, char ***srcfiles, Dwarf_Signed *srccount,
95 Dwarf_Error *error)
96 {
97 Dwarf_LineInfo li;
98 Dwarf_LineFile lf;
99 Dwarf_Debug dbg;
100 Dwarf_CU cu;
101 Dwarf_Attribute at;
102 int i;
103
104 dbg = die != NULL ? die->die_dbg : NULL;
105
106 if (die == NULL || srcfiles == NULL || srccount == NULL) {
107 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
108 return (DW_DLV_ERROR);
109 }
110
111 if ((at = _dwarf_attr_find(die, DW_AT_stmt_list)) == NULL) {
112 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
113 return (DW_DLV_NO_ENTRY);
114 }
115
116 cu = die->die_cu;
117 if (cu->cu_lineinfo == NULL) {
118 if (_dwarf_lineno_init(die, at->u[0].u64, error) !=
119 DW_DLE_NONE)
120 return (DW_DLV_ERROR);
121 }
122 if (cu->cu_lineinfo == NULL) {
123 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
124 return (DW_DLV_NO_ENTRY);
125 }
126
127 li = cu->cu_lineinfo;
128 *srccount = (Dwarf_Signed) li->li_lflen;
129
130 if (*srccount == 0) {
131 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
132 return (DW_DLV_NO_ENTRY);
133 }
134
135 if (li->li_lfnarray != NULL) {
136 *srcfiles = li->li_lfnarray;
137 return (DW_DLV_OK);
138 }
139
140 if ((li->li_lfnarray = malloc(*srccount * sizeof(char *))) == NULL) {
141 DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
142 return (DW_DLV_ERROR);
143 }
144
145 for (i = 0, lf = STAILQ_FIRST(&li->li_lflist);
146 i < *srccount && lf != NULL; i++, lf = STAILQ_NEXT(lf, lf_next)) {
147 if (lf->lf_fullpath)
148 li->li_lfnarray[i] = lf->lf_fullpath;
149 else
150 li->li_lfnarray[i] = lf->lf_fname;
151 }
152
153 *srcfiles = li->li_lfnarray;
154
155 return (DW_DLV_OK);
156 }
157
158 int
dwarf_linebeginstatement(Dwarf_Line ln,Dwarf_Bool * ret_bool,Dwarf_Error * error)159 dwarf_linebeginstatement(Dwarf_Line ln, Dwarf_Bool *ret_bool,
160 Dwarf_Error *error)
161 {
162
163 if (ln == NULL || ret_bool == NULL) {
164 DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
165 return (DW_DLV_ERROR);
166 }
167
168 *ret_bool = ln->ln_stmt;
169
170 return (DW_DLV_OK);
171 }
172
173 int
dwarf_lineendsequence(Dwarf_Line ln,Dwarf_Bool * ret_bool,Dwarf_Error * error)174 dwarf_lineendsequence(Dwarf_Line ln, Dwarf_Bool *ret_bool, Dwarf_Error *error)
175 {
176
177 if (ln == NULL || ret_bool == NULL) {
178 DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
179 return (DW_DLV_ERROR);
180 }
181
182 *ret_bool = ln->ln_endseq;
183
184 return (DW_DLV_OK);
185 }
186
187 int
dwarf_lineno(Dwarf_Line ln,Dwarf_Unsigned * ret_lineno,Dwarf_Error * error)188 dwarf_lineno(Dwarf_Line ln, Dwarf_Unsigned *ret_lineno, Dwarf_Error *error)
189 {
190
191 if (ln == NULL || ret_lineno == NULL) {
192 DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
193 return (DW_DLV_ERROR);
194 }
195
196 *ret_lineno = ln->ln_lineno;
197
198 return (DW_DLV_OK);
199 }
200
201 int
dwarf_line_srcfileno(Dwarf_Line ln,Dwarf_Unsigned * ret_fileno,Dwarf_Error * error)202 dwarf_line_srcfileno(Dwarf_Line ln, Dwarf_Unsigned *ret_fileno,
203 Dwarf_Error *error)
204 {
205
206 if (ln == NULL || ret_fileno == NULL) {
207 DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
208 return (DW_DLV_ERROR);
209 }
210
211 *ret_fileno = ln->ln_fileno;
212
213 return (DW_DLV_OK);
214 }
215
216 int
dwarf_lineaddr(Dwarf_Line ln,Dwarf_Addr * ret_lineaddr,Dwarf_Error * error)217 dwarf_lineaddr(Dwarf_Line ln, Dwarf_Addr *ret_lineaddr, Dwarf_Error *error)
218 {
219
220 if (ln == NULL || ret_lineaddr == NULL) {
221 DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
222 return (DW_DLV_ERROR);
223 }
224
225 *ret_lineaddr = ln->ln_addr;
226
227 return (DW_DLV_OK);
228 }
229
230 int
dwarf_lineoff(Dwarf_Line ln,Dwarf_Signed * ret_lineoff,Dwarf_Error * error)231 dwarf_lineoff(Dwarf_Line ln, Dwarf_Signed *ret_lineoff, Dwarf_Error *error)
232 {
233
234 if (ln == NULL || ret_lineoff == NULL) {
235 DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
236 return (DW_DLV_ERROR);
237 }
238
239 if (ln->ln_column == 0)
240 *ret_lineoff = -1;
241 else
242 *ret_lineoff = (Dwarf_Signed) ln->ln_column;
243
244 return (DW_DLV_OK);
245 }
246
247 int
dwarf_linesrc(Dwarf_Line ln,char ** ret_linesrc,Dwarf_Error * error)248 dwarf_linesrc(Dwarf_Line ln, char **ret_linesrc, Dwarf_Error *error)
249 {
250 Dwarf_LineInfo li;
251 Dwarf_LineFile lf;
252 int i;
253
254 if (ln == NULL || ret_linesrc == NULL) {
255 DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
256 return (DW_DLV_ERROR);
257 }
258
259 li = ln->ln_li;
260 assert(li != NULL);
261
262 for (i = 1, lf = STAILQ_FIRST(&li->li_lflist);
263 (Dwarf_Unsigned) i < ln->ln_fileno && lf != NULL;
264 i++, lf = STAILQ_NEXT(lf, lf_next))
265 ;
266
267 if (lf == NULL) {
268 DWARF_SET_ERROR(NULL, error, DW_DLE_LINE_FILE_NUM_BAD);
269 return (DW_DLV_ERROR);
270 }
271
272 if (lf->lf_fullpath) {
273 *ret_linesrc = (char *) lf->lf_fullpath;
274 return (DW_DLV_OK);
275 }
276
277 *ret_linesrc = lf->lf_fname;
278
279 return (DW_DLV_OK);
280 }
281
282 int
dwarf_lineblock(Dwarf_Line ln,Dwarf_Bool * ret_bool,Dwarf_Error * error)283 dwarf_lineblock(Dwarf_Line ln, Dwarf_Bool *ret_bool, Dwarf_Error *error)
284 {
285
286 if (ln == NULL || ret_bool == NULL) {
287 DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
288 return (DW_DLV_ERROR);
289 }
290
291 *ret_bool = ln->ln_bblock;
292
293 return (DW_DLV_OK);
294 }
295