Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
4 */
5
6#ifndef _WARN_H
7#define _WARN_H
8
9#include <stdlib.h>
10#include <string.h>
11#include <sys/types.h>
12#include <sys/stat.h>
13#include <fcntl.h>
14#include "elf.h"
15
16extern const char *objname;
17
18static inline char *offstr(struct section *sec, unsigned long offset)
19{
20 struct symbol *func;
21 char *name, *str;
22 unsigned long name_off;
23
24 func = find_func_containing(sec, offset);
25 if (func) {
26 name = func->name;
27 name_off = offset - func->offset;
28 } else {
29 name = sec->name;
30 name_off = offset;
31 }
32
33 str = malloc(strlen(name) + 20);
34
35 if (func)
36 sprintf(str, "%s()+0x%lx", name, name_off);
37 else
38 sprintf(str, "%s+0x%lx", name, name_off);
39
40 return str;
41}
42
43#define WARN(format, ...) \
44 fprintf(stderr, \
45 "%s: warning: objtool: " format "\n", \
46 objname, ##__VA_ARGS__)
47
48#define WARN_FUNC(format, sec, offset, ...) \
49({ \
50 char *_str = offstr(sec, offset); \
51 WARN("%s: " format, _str, ##__VA_ARGS__); \
52 free(_str); \
53})
54
55#define BT_FUNC(format, insn, ...) \
56({ \
57 struct instruction *_insn = (insn); \
58 char *_str = offstr(_insn->sec, _insn->offset); \
59 WARN(" %s: " format, _str, ##__VA_ARGS__); \
60 free(_str); \
61})
62
63#define WARN_ELF(format, ...) \
64 WARN(format ": %s", ##__VA_ARGS__, elf_errmsg(-1))
65
66#endif /* _WARN_H */