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
28extern const char *objname;
29
30static 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 */