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
29ELFTC_VCSID("$Id: dwarf_lineno.c 2983 2014-02-09 00:24:31Z kaiwang27 $");
30
31int
32dwarf_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
93int
94dwarf_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
158int
159dwarf_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
173int
174dwarf_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
187int
188dwarf_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
201int
202dwarf_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
216int
217dwarf_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
230int
231dwarf_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
247int
248dwarf_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
282int
283dwarf_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