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
29ELFTC_VCSID("$Id: dwarf_pro_macinfo.c 2074 2011-10-27 03:34:33Z jkoshy $");
30
31static int
32_dwarf_add_macro(Dwarf_P_Debug dbg, int type, Dwarf_Unsigned lineno,
33    Dwarf_Signed fileindex, char *str1, char *str2, Dwarf_Error *error)
34{
35	Dwarf_Macro_Details *md;
36	int len;
37
38	dbg->dbgp_mdlist = realloc(dbg->dbgp_mdlist,
39	    (size_t) dbg->dbgp_mdcnt + 1);
40	if (dbg->dbgp_mdlist == NULL) {
41		DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
42		return (DW_DLV_ERROR);
43	}
44
45	md = &dbg->dbgp_mdlist[dbg->dbgp_mdcnt];
46	dbg->dbgp_mdcnt++;
47
48	md->dmd_offset = 0;
49	md->dmd_type = type;
50	md->dmd_lineno = lineno;
51	md->dmd_fileindex = fileindex;
52	md->dmd_macro = NULL;
53
54	if (str1 == NULL)
55		return (DW_DLV_OK);
56	else if (str2 == NULL) {
57		if ((md->dmd_macro = strdup(str1)) == NULL) {
58			dbg->dbgp_mdcnt--;
59			DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
60			return (DW_DLV_ERROR);
61		}
62		return (DW_DLV_OK);
63	} else {
64		len = strlen(str1) + strlen(str2) + 2;
65		if ((md->dmd_macro = malloc(len)) == NULL) {
66			dbg->dbgp_mdcnt--;
67			DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
68			return (DW_DLV_ERROR);
69		}
70		snprintf(md->dmd_macro, len, "%s %s", str1, str2);
71		return (DW_DLV_OK);
72	}
73}
74
75int
76dwarf_def_macro(Dwarf_P_Debug dbg, Dwarf_Unsigned lineno, char *name,
77    char *value, Dwarf_Error *error)
78{
79
80	if (dbg == NULL || name == NULL) {
81		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
82		return (DW_DLV_ERROR);
83	}
84
85	return (_dwarf_add_macro(dbg, DW_MACINFO_define, lineno, -1, name,
86	    value, error));
87}
88
89int
90dwarf_undef_macro(Dwarf_P_Debug dbg, Dwarf_Unsigned lineno, char *name,
91    Dwarf_Error *error)
92{
93
94	if (dbg == NULL || name == NULL) {
95		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
96		return (DW_DLV_ERROR);
97	}
98
99	return (_dwarf_add_macro(dbg, DW_MACINFO_undef, lineno, -1, name,
100	    NULL, error));
101}
102
103int
104dwarf_start_macro_file(Dwarf_P_Debug dbg, Dwarf_Unsigned lineno,
105    Dwarf_Unsigned fileindex, Dwarf_Error *error)
106{
107
108	if (dbg == NULL) {
109		DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
110		return (DW_DLV_ERROR);
111	}
112
113	return (_dwarf_add_macro(dbg, DW_MACINFO_start_file, lineno, fileindex,
114	    NULL, NULL, error));
115}
116
117int
118dwarf_end_macro_file(Dwarf_P_Debug dbg, Dwarf_Error *error)
119{
120
121	if (dbg == NULL) {
122		DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
123		return (DW_DLV_ERROR);
124	}
125
126	return (_dwarf_add_macro(dbg, DW_MACINFO_end_file, 0, -1,
127	    NULL, NULL, error));
128}
129
130int
131dwarf_vendor_ext(Dwarf_P_Debug dbg, Dwarf_Unsigned constant, char *string,
132    Dwarf_Error *error)
133{
134
135	if (dbg == NULL || string == NULL) {
136		DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
137		return (DW_DLV_ERROR);
138	}
139
140	return (_dwarf_add_macro(dbg, DW_MACINFO_vendor_ext, constant, -1,
141	    string, NULL, error));
142}
143