mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-09-04 20:19:47 +08:00
3e7be63593
This is similar to GCC's behavior and makes it more obvious why the build failed. Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/0ea76f4b0e7a370711ed9f75fd0792bb5979c2bf.1743481539.git.jpoimboe@kernel.org
106 lines
3.1 KiB
C
106 lines
3.1 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 <errno.h>
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#include <objtool/builtin.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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bool is_text = (sec->sh.sh_flags & SHF_EXECINSTR);
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struct symbol *sym = NULL;
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char *str;
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int len;
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if (is_text)
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sym = find_func_containing(sec, offset);
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if (!sym)
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sym = find_symbol_containing(sec, offset);
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if (sym) {
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str = malloc(strlen(sym->name) + strlen(sec->name) + 40);
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len = sprintf(str, "%s+0x%lx", sym->name, offset - sym->offset);
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if (opts.sec_address)
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sprintf(str+len, " (%s+0x%lx)", sec->name, offset);
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} else {
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str = malloc(strlen(sec->name) + 20);
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sprintf(str, "%s+0x%lx", sec->name, offset);
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}
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return str;
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}
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#define ___WARN(severity, extra, format, ...) \
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fprintf(stderr, \
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"%s%s%s: objtool" extra ": " format "\n", \
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objname ?: "", \
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objname ? ": " : "", \
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severity, \
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##__VA_ARGS__)
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#define __WARN(severity, format, ...) \
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___WARN(severity, "", format, ##__VA_ARGS__)
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#define __WARN_LINE(severity, format, ...) \
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___WARN(severity, " [%s:%d]", format, __FILE__, __LINE__, ##__VA_ARGS__)
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#define __WARN_ELF(severity, format, ...) \
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__WARN_LINE(severity, "%s: " format " failed: %s", __func__, ##__VA_ARGS__, elf_errmsg(-1))
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#define __WARN_GLIBC(severity, format, ...) \
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__WARN_LINE(severity, "%s: " format " failed: %s", __func__, ##__VA_ARGS__, strerror(errno))
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#define __WARN_FUNC(severity, sec, offset, format, ...) \
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({ \
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char *_str = offstr(sec, offset); \
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__WARN(severity, "%s: " format, _str, ##__VA_ARGS__); \
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free(_str); \
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})
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#define WARN_STR (opts.werror ? "error" : "warning")
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#define WARN(format, ...) __WARN(WARN_STR, format, ##__VA_ARGS__)
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#define WARN_FUNC(sec, offset, format, ...) __WARN_FUNC(WARN_STR, sec, offset, format, ##__VA_ARGS__)
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#define WARN_INSN(insn, format, ...) \
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({ \
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struct instruction *_insn = (insn); \
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if (!_insn->sym || !_insn->sym->warned) \
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WARN_FUNC(_insn->sec, _insn->offset, format, \
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##__VA_ARGS__); \
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if (_insn->sym) \
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_insn->sym->warned = 1; \
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})
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#define BT_INSN(insn, format, ...) \
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({ \
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if (opts.verbose || opts.backtrace) { \
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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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})
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#define ERROR_STR "error"
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#define ERROR(format, ...) __WARN(ERROR_STR, format, ##__VA_ARGS__)
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#define ERROR_ELF(format, ...) __WARN_ELF(ERROR_STR, format, ##__VA_ARGS__)
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#define ERROR_GLIBC(format, ...) __WARN_GLIBC(ERROR_STR, format, ##__VA_ARGS__)
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#define ERROR_FUNC(sec, offset, format, ...) __WARN_FUNC(ERROR_STR, sec, offset, format, ##__VA_ARGS__)
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#define ERROR_INSN(insn, format, ...) WARN_FUNC(insn->sec, insn->offset, format, ##__VA_ARGS__)
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#endif /* _WARN_H */
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