xref: /freebsd/contrib/elftoolchain/libdwarf/dwarf_pro_lineno.c (revision e8d8bef961a50d4dc22501cde4fb9fb0be1b2532)
1 /*-
2  * Copyright (c) 2010 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_lineno.c 2973 2013-12-23 06:46:16Z kaiwang27 $");
30 
31 Dwarf_Unsigned
32 dwarf_add_line_entry(Dwarf_P_Debug dbg, Dwarf_Unsigned file,
33     Dwarf_Addr off, Dwarf_Unsigned lineno, Dwarf_Signed column,
34     Dwarf_Bool is_stmt, Dwarf_Bool basic_block, Dwarf_Error *error)
35 {
36 	Dwarf_LineInfo li;
37 	Dwarf_Line ln;
38 
39 	if (dbg == NULL) {
40 		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
41 		return (DW_DLV_NOCOUNT);
42 	}
43 
44 	li = dbg->dbgp_lineinfo;
45 
46 	ln = STAILQ_LAST(&li->li_lnlist, _Dwarf_Line, ln_next);
47 
48 	if (ln == NULL || ln->ln_addr > off) {
49 		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
50 		return (DW_DLV_NOCOUNT);
51 	}
52 
53 	if ((ln = calloc(1, sizeof(struct _Dwarf_Line))) == NULL) {
54 		DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
55 		return (DW_DLV_NOCOUNT);
56 	}
57 	ln->ln_li     = li;
58 	ln->ln_addr   = off;
59 	ln->ln_symndx = 0;
60 	ln->ln_fileno = file;
61 	ln->ln_lineno = lineno;
62 	ln->ln_column = column;
63 	ln->ln_bblock = basic_block != 0;
64 	ln->ln_stmt   = is_stmt != 0;
65 	ln->ln_endseq = 0;
66 	STAILQ_INSERT_TAIL(&li->li_lnlist, ln, ln_next);
67 	li->li_lnlen++;
68 
69 	return (DW_DLV_OK);
70 }
71 
72 Dwarf_Unsigned
73 dwarf_lne_set_address(Dwarf_P_Debug dbg, Dwarf_Addr offs, Dwarf_Unsigned symndx,
74     Dwarf_Error *error)
75 {
76 	Dwarf_LineInfo li;
77 	Dwarf_Line ln;
78 
79 	if (dbg == NULL || symndx == 0) {
80 		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
81 		return (DW_DLV_NOCOUNT);
82 	}
83 
84 	li = dbg->dbgp_lineinfo;
85 
86 	if ((ln = calloc(1, sizeof(struct _Dwarf_Line))) == NULL) {
87 		DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
88 		return (DW_DLV_NOCOUNT);
89 	}
90 	ln->ln_li = li;
91 	ln->ln_addr = offs;
92 	ln->ln_symndx = symndx;
93 	STAILQ_INSERT_TAIL(&li->li_lnlist, ln, ln_next);
94 	li->li_lnlen++;
95 
96 	return (DW_DLV_OK);
97 }
98 
99 Dwarf_Unsigned
100 dwarf_lne_end_sequence(Dwarf_P_Debug dbg, Dwarf_Addr addr, Dwarf_Error *error)
101 {
102 	Dwarf_LineInfo li;
103 	Dwarf_Line ln;
104 
105 	if (dbg == NULL) {
106 		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
107 		return (DW_DLV_NOCOUNT);
108 	}
109 
110 	li = dbg->dbgp_lineinfo;
111 
112 	ln = STAILQ_LAST(&li->li_lnlist, _Dwarf_Line, ln_next);
113 	if (ln && ln->ln_addr >= addr) {
114 		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
115 		return (DW_DLV_NOCOUNT);
116 	}
117 
118 	if ((ln = calloc(1, sizeof(struct _Dwarf_Line))) == NULL) {
119 		DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
120 		return (DW_DLV_NOCOUNT);
121 	}
122 	ln->ln_li = li;
123 	ln->ln_addr = addr;
124 	ln->ln_endseq = 1;
125 	STAILQ_INSERT_TAIL(&li->li_lnlist, ln, ln_next);
126 	li->li_lnlen++;
127 
128 	return (DW_DLV_OK);
129 }
130 
131 Dwarf_Unsigned
132 dwarf_add_directory_decl(Dwarf_P_Debug dbg, char *name, Dwarf_Error *error)
133 {
134 	Dwarf_LineInfo li;
135 
136 	if (dbg == NULL || name == NULL || strlen(name) == 0) {
137 		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
138 		return (DW_DLV_NOCOUNT);
139 	}
140 
141 	li = dbg->dbgp_lineinfo;
142 
143 	li->li_incdirs = realloc(li->li_incdirs, (li->li_inclen + 1) *
144 	    sizeof(char *));
145 	if (li->li_incdirs == NULL) {
146 		DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
147 		return (DW_DLV_NOCOUNT);
148 	}
149 	if ((li->li_incdirs[li->li_inclen] = strdup(name)) == NULL) {
150 		DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
151 		return (DW_DLV_NOCOUNT);
152 	}
153 
154 	return (++li->li_inclen);
155 }
156 
157 Dwarf_Unsigned
158 dwarf_add_file_decl(Dwarf_P_Debug dbg, char *name, Dwarf_Unsigned dirndx,
159     Dwarf_Unsigned mtime, Dwarf_Unsigned size, Dwarf_Error *error)
160 {
161 	Dwarf_LineInfo li;
162 	Dwarf_LineFile lf;
163 
164 	if (dbg == NULL || name == NULL || strlen(name) == 0) {
165 		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
166 		return (DW_DLV_NOCOUNT);
167 	}
168 
169 	li = dbg->dbgp_lineinfo;
170 
171 	if ((lf = malloc(sizeof(struct _Dwarf_LineFile))) == NULL) {
172 		DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
173 		return (DW_DLE_MEMORY);
174 	}
175 
176 	if ((lf->lf_fname = strdup(name)) == NULL) {
177 		free(lf);
178 		DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
179 		return (DW_DLE_MEMORY);
180 	}
181 	lf->lf_dirndx = dirndx;
182 	lf->lf_mtime = mtime;
183 	lf->lf_size = size;
184 	STAILQ_INSERT_TAIL(&li->li_lflist, lf, lf_next);
185 
186 	return (++li->li_lflen);
187 }
188