1 /*
2 * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17
18 #ifndef _WARN_H
19 #define _WARN_H
20
21 #include <stdlib.h>
22 #include <string.h>
23 #include <sys/types.h>
24 #include <sys/stat.h>
25 #include <fcntl.h>
26 #include "elf.h"
27
28 extern const char *objname;
29
offstr(struct section * sec,unsigned long offset)30 static inline char *offstr(struct section *sec, unsigned long offset)
31 {
32 struct symbol *func;
33 char *name, *str;
34 unsigned long name_off;
35
36 func = find_containing_func(sec, offset);
37 if (func) {
38 name = func->name;
39 name_off = offset - func->offset;
40 } else {
41 name = sec->name;
42 name_off = offset;
43 }
44
45 str = malloc(strlen(name) + 20);
46
47 if (func)
48 sprintf(str, "%s()+0x%lx", name, name_off);
49 else
50 sprintf(str, "%s+0x%lx", name, name_off);
51
52 return str;
53 }
54
55 #define WARN(format, ...) \
56 fprintf(stderr, \
57 "%s: warning: objtool: " format "\n", \
58 objname, ##__VA_ARGS__)
59
60 #define WARN_FUNC(format, sec, offset, ...) \
61 ({ \
62 char *_str = offstr(sec, offset); \
63 WARN("%s: " format, _str, ##__VA_ARGS__); \
64 free(_str); \
65 })
66
67 #define WARN_ELF(format, ...) \
68 WARN(format ": %s", ##__VA_ARGS__, elf_errmsg(-1))
69
70 #endif /* _WARN_H */
71
