1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #ifndef _WARN_H
7*4882a593Smuzhiyun #define _WARN_H
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <stdlib.h>
10*4882a593Smuzhiyun #include <string.h>
11*4882a593Smuzhiyun #include <sys/types.h>
12*4882a593Smuzhiyun #include <sys/stat.h>
13*4882a593Smuzhiyun #include <fcntl.h>
14*4882a593Smuzhiyun #include "elf.h"
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun extern const char *objname;
17*4882a593Smuzhiyun
offstr(struct section * sec,unsigned long offset)18*4882a593Smuzhiyun static inline char *offstr(struct section *sec, unsigned long offset)
19*4882a593Smuzhiyun {
20*4882a593Smuzhiyun struct symbol *func;
21*4882a593Smuzhiyun char *name, *str;
22*4882a593Smuzhiyun unsigned long name_off;
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun func = find_func_containing(sec, offset);
25*4882a593Smuzhiyun if (func) {
26*4882a593Smuzhiyun name = func->name;
27*4882a593Smuzhiyun name_off = offset - func->offset;
28*4882a593Smuzhiyun } else {
29*4882a593Smuzhiyun name = sec->name;
30*4882a593Smuzhiyun name_off = offset;
31*4882a593Smuzhiyun }
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun str = malloc(strlen(name) + 20);
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun if (func)
36*4882a593Smuzhiyun sprintf(str, "%s()+0x%lx", name, name_off);
37*4882a593Smuzhiyun else
38*4882a593Smuzhiyun sprintf(str, "%s+0x%lx", name, name_off);
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun return str;
41*4882a593Smuzhiyun }
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun #define WARN(format, ...) \
44*4882a593Smuzhiyun fprintf(stderr, \
45*4882a593Smuzhiyun "%s: warning: objtool: " format "\n", \
46*4882a593Smuzhiyun objname, ##__VA_ARGS__)
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun #define WARN_FUNC(format, sec, offset, ...) \
49*4882a593Smuzhiyun ({ \
50*4882a593Smuzhiyun char *_str = offstr(sec, offset); \
51*4882a593Smuzhiyun WARN("%s: " format, _str, ##__VA_ARGS__); \
52*4882a593Smuzhiyun free(_str); \
53*4882a593Smuzhiyun })
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun #define BT_FUNC(format, insn, ...) \
56*4882a593Smuzhiyun ({ \
57*4882a593Smuzhiyun struct instruction *_insn = (insn); \
58*4882a593Smuzhiyun char *_str = offstr(_insn->sec, _insn->offset); \
59*4882a593Smuzhiyun WARN(" %s: " format, _str, ##__VA_ARGS__); \
60*4882a593Smuzhiyun free(_str); \
61*4882a593Smuzhiyun })
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun #define WARN_ELF(format, ...) \
64*4882a593Smuzhiyun WARN(format ": %s", ##__VA_ARGS__, elf_errmsg(-1))
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun #endif /* _WARN_H */
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