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 <objtool/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 func = find_symbol_containing(sec, offset);
27 if (func) {
28 name = func->name;
29 name_off = offset - func->offset;
30 } else {
31 name = sec->name;
32 name_off = offset;
33 }
34
35 str = malloc(strlen(name) + 20);
36
37 if (func)
38 sprintf(str, "%s()+0x%lx", name, name_off);
39 else
40 sprintf(str, "%s+0x%lx", name, name_off);
41
42 return str;
43}
44
45#define WARN(format, ...) \
46 fprintf(stderr, \
47 "%s: warning: objtool: " format "\n", \
48 objname, ##__VA_ARGS__)
49
50#define WARN_FUNC(format, sec, offset, ...) \
51({ \
52 char *_str = offstr(sec, offset); \
53 WARN("%s: " format, _str, ##__VA_ARGS__); \
54 free(_str); \
55})
56
57#define BT_FUNC(format, insn, ...) \
58({ \
59 struct instruction *_insn = (insn); \
60 char *_str = offstr(_insn->sec, _insn->offset); \
61 WARN(" %s: " format, _str, ##__VA_ARGS__); \
62 free(_str); \
63})
64
65#define WARN_ELF(format, ...) \
66 WARN(format ": %s", ##__VA_ARGS__, elf_errmsg(-1))
67
68#endif /* _WARN_H */