5cff2086b0
Currently WARN_FUNC() either prints func+off and failing that prints sec+off, add an intermediate sym+off. This is useful when playing around with entry code. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/r/20220308154317.461283840@infradead.org
68 lines
1.4 KiB
C
68 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
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*/
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#ifndef _WARN_H
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#define _WARN_H
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <objtool/elf.h>
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extern const char *objname;
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static inline char *offstr(struct section *sec, unsigned long offset)
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{
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struct symbol *func;
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char *name, *str;
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unsigned long name_off;
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func = find_func_containing(sec, offset);
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if (!func)
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func = find_symbol_containing(sec, offset);
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if (func) {
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name = func->name;
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name_off = offset - func->offset;
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} else {
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name = sec->name;
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name_off = offset;
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}
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str = malloc(strlen(name) + 20);
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if (func)
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sprintf(str, "%s()+0x%lx", name, name_off);
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else
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sprintf(str, "%s+0x%lx", name, name_off);
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return str;
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}
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#define WARN(format, ...) \
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fprintf(stderr, \
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"%s: warning: objtool: " format "\n", \
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objname, ##__VA_ARGS__)
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#define WARN_FUNC(format, sec, offset, ...) \
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({ \
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char *_str = offstr(sec, offset); \
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WARN("%s: " format, _str, ##__VA_ARGS__); \
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free(_str); \
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})
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#define BT_FUNC(format, insn, ...) \
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({ \
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struct instruction *_insn = (insn); \
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char *_str = offstr(_insn->sec, _insn->offset); \
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WARN(" %s: " format, _str, ##__VA_ARGS__); \
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free(_str); \
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})
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#define WARN_ELF(format, ...) \
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WARN(format ": %s", ##__VA_ARGS__, elf_errmsg(-1))
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#endif /* _WARN_H */
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