1/*	$NetBSD: dwarf_pro_lineno.c,v 1.5 2024/03/03 17:37:32 christos Exp $	*/
2
3/*-
4 * Copyright (c) 2010 Kai Wang
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include "_libdwarf.h"
30
31__RCSID("$NetBSD: dwarf_pro_lineno.c,v 1.5 2024/03/03 17:37:32 christos Exp $");
32ELFTC_VCSID("Id: dwarf_pro_lineno.c 2973 2013-12-23 06:46:16Z kaiwang27");
33
34Dwarf_Unsigned
35dwarf_add_line_entry(Dwarf_P_Debug dbg, Dwarf_Unsigned file,
36    Dwarf_Addr off, Dwarf_Unsigned lineno, Dwarf_Signed column,
37    Dwarf_Bool is_stmt, Dwarf_Bool basic_block, Dwarf_Error *error)
38{
39	Dwarf_LineInfo li;
40	Dwarf_Line ln;
41
42	if (dbg == NULL) {
43		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
44		return (DW_DLV_NOCOUNT);
45	}
46
47	li = dbg->dbgp_lineinfo;
48
49	ln = STAILQ_LAST(&li->li_lnlist, _Dwarf_Line, ln_next);
50
51	if (ln == NULL || ln->ln_addr > off) {
52		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
53		return (DW_DLV_NOCOUNT);
54	}
55
56	if ((ln = calloc(1, sizeof(struct _Dwarf_Line))) == NULL) {
57		DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
58		return (DW_DLV_NOCOUNT);
59	}
60	ln->ln_li     = li;
61	ln->ln_addr   = off;
62	ln->ln_symndx = 0;
63	ln->ln_fileno = file;
64	ln->ln_lineno = lineno;
65	ln->ln_column = column;
66	ln->ln_bblock = basic_block != 0;
67	ln->ln_stmt   = is_stmt != 0;
68	ln->ln_endseq = 0;
69	STAILQ_INSERT_TAIL(&li->li_lnlist, ln, ln_next);
70	li->li_lnlen++;
71
72	return (DW_DLV_OK);
73}
74
75Dwarf_Unsigned
76dwarf_lne_set_address(Dwarf_P_Debug dbg, Dwarf_Addr offs, Dwarf_Unsigned symndx,
77    Dwarf_Error *error)
78{
79	Dwarf_LineInfo li;
80	Dwarf_Line ln;
81
82	if (dbg == NULL || symndx == 0) {
83		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
84		return (DW_DLV_NOCOUNT);
85	}
86
87	li = dbg->dbgp_lineinfo;
88
89	if ((ln = calloc(1, sizeof(struct _Dwarf_Line))) == NULL) {
90		DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
91		return (DW_DLV_NOCOUNT);
92	}
93	ln->ln_li = li;
94	ln->ln_addr = offs;
95	ln->ln_symndx = symndx;
96	STAILQ_INSERT_TAIL(&li->li_lnlist, ln, ln_next);
97	li->li_lnlen++;
98
99	return (DW_DLV_OK);
100}
101
102Dwarf_Unsigned
103dwarf_lne_end_sequence(Dwarf_P_Debug dbg, Dwarf_Addr addr, Dwarf_Error *error)
104{
105	Dwarf_LineInfo li;
106	Dwarf_Line ln;
107
108	if (dbg == NULL) {
109		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
110		return (DW_DLV_NOCOUNT);
111	}
112
113	li = dbg->dbgp_lineinfo;
114
115	ln = STAILQ_LAST(&li->li_lnlist, _Dwarf_Line, ln_next);
116	if (ln && ln->ln_addr >= addr) {
117		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
118		return (DW_DLV_NOCOUNT);
119	}
120
121	if ((ln = calloc(1, sizeof(struct _Dwarf_Line))) == NULL) {
122		DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
123		return (DW_DLV_NOCOUNT);
124	}
125	ln->ln_li = li;
126	ln->ln_addr = addr;
127	ln->ln_endseq = 1;
128	STAILQ_INSERT_TAIL(&li->li_lnlist, ln, ln_next);
129	li->li_lnlen++;
130
131	return (DW_DLV_OK);
132}
133
134Dwarf_Unsigned
135dwarf_add_directory_decl(Dwarf_P_Debug dbg, char *name, Dwarf_Error *error)
136{
137	Dwarf_LineInfo li;
138
139	if (dbg == NULL || name == NULL || strlen(name) == 0) {
140		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
141		return (DW_DLV_NOCOUNT);
142	}
143
144	li = dbg->dbgp_lineinfo;
145
146	li->li_incdirs = realloc(li->li_incdirs, (li->li_inclen + 1) *
147	    sizeof(char *));
148	if (li->li_incdirs == NULL) {
149		DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
150		return (DW_DLV_NOCOUNT);
151	}
152	if ((li->li_incdirs[li->li_inclen] = strdup(name)) == NULL) {
153		DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
154		return (DW_DLV_NOCOUNT);
155	}
156
157	return (++li->li_inclen);
158}
159
160Dwarf_Unsigned
161dwarf_add_file_decl(Dwarf_P_Debug dbg, char *name, Dwarf_Unsigned dirndx,
162    Dwarf_Unsigned mtime, Dwarf_Unsigned size, Dwarf_Error *error)
163{
164	Dwarf_LineInfo li;
165	Dwarf_LineFile lf;
166
167	if (dbg == NULL || name == NULL || strlen(name) == 0) {
168		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
169		return (DW_DLV_NOCOUNT);
170	}
171
172	li = dbg->dbgp_lineinfo;
173
174	if ((lf = malloc(sizeof(struct _Dwarf_LineFile))) == NULL) {
175		DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
176		return (DW_DLE_MEMORY);
177	}
178
179	if ((lf->lf_fname = strdup(name)) == NULL) {
180		free(lf);
181		DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
182		return (DW_DLE_MEMORY);
183	}
184	lf->lf_dirndx = dirndx;
185	lf->lf_mtime = mtime;
186	lf->lf_size = size;
187	STAILQ_INSERT_TAIL(&li->li_lflist, lf, lf_next);
188
189	return (++li->li_lflen);
190}
191