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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
*/
#ifndef _WARN_H
#define _WARN_H
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <objtool/builtin.h>
#include <objtool/elf.h>
extern const char *objname;
static inline char *offstr(struct section *sec, unsigned long offset)
{
bool is_text = (sec->sh.sh_flags & SHF_EXECINSTR);
struct symbol *sym = NULL;
char *str;
int len;
if (is_text)
sym = find_func_containing(sec, offset);
if (!sym)
sym = find_symbol_containing(sec, offset);
if (sym) {
str = malloc(strlen(sym->name) + strlen(sec->name) + 40);
len = sprintf(str, "%s+0x%lx", sym->name, offset - sym->offset);
if (opts.sec_address)
sprintf(str+len, " (%s+0x%lx)", sec->name, offset);
} else {
str = malloc(strlen(sec->name) + 20);
sprintf(str, "%s+0x%lx", sec->name, offset);
}
return str;
}
#define WARN(format, ...) \
fprintf(stderr, \
"%s: warning: objtool: " format "\n", \
objname, ##__VA_ARGS__)
#define WARN_FUNC(format, sec, offset, ...) \
({ \
char *_str = offstr(sec, offset); \
WARN("%s: " format, _str, ##__VA_ARGS__); \
free(_str); \
})
#define WARN_INSN(insn, format, ...) \
({ \
struct instruction *_insn = (insn); \
if (!_insn->sym || !_insn->sym->warned) \
WARN_FUNC(format, _insn->sec, _insn->offset, \
##__VA_ARGS__); \
if (_insn->sym) \
_insn->sym->warned = 1; \
})
#define BT_INSN(insn, format, ...) \
({ \
if (opts.verbose || opts.backtrace) { \
struct instruction *_insn = (insn); \
char *_str = offstr(_insn->sec, _insn->offset); \
WARN(" %s: " format, _str, ##__VA_ARGS__); \
free(_str); \
} \
})
#define WARN_ELF(format, ...) \
WARN(format ": %s", ##__VA_ARGS__, elf_errmsg(-1))
#endif /* _WARN_H */
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