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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128/* SPDX-License-Identifier: GPL-2.0 */#ifndef _LINUX_ANNOTATE_H#define _LINUX_ANNOTATE_H
#include <linux/objtool_types.h>
#ifdef CONFIG_OBJTOOL
#define __ASM_ANNOTATE(section, label, type) \ .pushsection section, "M", @progbits, 8; \ .long label - ., type; \ .popsection
#ifndef __ASSEMBLY__
#define ASM_ANNOTATE_LABEL(label, type) \ __stringify(__ASM_ANNOTATE(.discard.annotate_insn, label, type))
#define ASM_ANNOTATE(type) \ "911: " \ __stringify(__ASM_ANNOTATE(.discard.annotate_insn, 911b, type))
#define ASM_ANNOTATE_DATA(type) \ "912: " \ __stringify(__ASM_ANNOTATE(.discard.annotate_data, 912b, type))
#else /* __ASSEMBLY__ */
.macro ANNOTATE type.Lhere_\@: __ASM_ANNOTATE(.discard.annotate_insn, .Lhere_\@, \type).endm
.macro ANNOTATE_DATA type.Lhere_\@: __ASM_ANNOTATE(.discard.annotate_data, .Lhere_\@, \type).endm
#endif /* __ASSEMBLY__ */
#else /* !CONFIG_OBJTOOL */#ifndef __ASSEMBLY__#define ASM_ANNOTATE_LABEL(label, type) ""#define ASM_ANNOTATE(type)#define ASM_ANNOTATE_DATA(type)#else /* __ASSEMBLY__ */.macro ANNOTATE type.endm.macro ANNOTATE_DATA type.endm#endif /* __ASSEMBLY__ */#endif /* !CONFIG_OBJTOOL */
#ifndef __ASSEMBLY__
/* * Annotate away the various 'relocation to !ENDBR` complaints; knowing that * these relocations will never be used for indirect calls. */#define ANNOTATE_NOENDBR ASM_ANNOTATE(ANNOTYPE_NOENDBR)#define ANNOTATE_NOENDBR_SYM(sym) asm(ASM_ANNOTATE_LABEL(sym, ANNOTYPE_NOENDBR))
/* * This should be used immediately before an indirect jump/call. It tells * objtool the subsequent indirect jump/call is vouched safe for retpoline * builds. */#define ANNOTATE_RETPOLINE_SAFE ASM_ANNOTATE(ANNOTYPE_RETPOLINE_SAFE)/* * See linux/instrumentation.h */#define ANNOTATE_INSTR_BEGIN(label) ASM_ANNOTATE_LABEL(label, ANNOTYPE_INSTR_BEGIN)#define ANNOTATE_INSTR_END(label) ASM_ANNOTATE_LABEL(label, ANNOTYPE_INSTR_END)/* * objtool annotation to ignore the alternatives and only consider the original * instruction(s). */#define ANNOTATE_IGNORE_ALTERNATIVE ASM_ANNOTATE(ANNOTYPE_IGNORE_ALTS)/* * This macro indicates that the following intra-function call is valid. * Any non-annotated intra-function call will cause objtool to issue a warning. */#define ANNOTATE_INTRA_FUNCTION_CALL ASM_ANNOTATE(ANNOTYPE_INTRA_FUNCTION_CALL)/* * Use objtool to validate the entry requirement that all code paths do * VALIDATE_UNRET_END before RET. * * NOTE: The macro must be used at the beginning of a global symbol, otherwise * it will be ignored. */#define ANNOTATE_UNRET_BEGIN ASM_ANNOTATE(ANNOTYPE_UNRET_BEGIN)/* * This should be used to refer to an instruction that is considered * terminating, like a noreturn CALL or UD2 when we know they are not -- eg * WARN using UD2. */#define ANNOTATE_REACHABLE(label) ASM_ANNOTATE_LABEL(label, ANNOTYPE_REACHABLE)/* * This should not be used; it annotates away CFI violations. There are a few * valid use cases like kexec handover to the next kernel image, and there is * no security concern there. * * There are also a few real issues annotated away, like EFI because we can't * control the EFI code. */#define ANNOTATE_NOCFI_SYM(sym) asm(ASM_ANNOTATE_LABEL(sym, ANNOTYPE_NOCFI))
/* * Annotate a special section entry. This emables livepatch module generation * to find and extract individual special section entries as needed. */#define ANNOTATE_DATA_SPECIAL ASM_ANNOTATE_DATA(ANNOTYPE_DATA_SPECIAL)
#else /* __ASSEMBLY__ */#define ANNOTATE_NOENDBR ANNOTATE type=ANNOTYPE_NOENDBR#define ANNOTATE_RETPOLINE_SAFE ANNOTATE type=ANNOTYPE_RETPOLINE_SAFE/* ANNOTATE_INSTR_BEGIN ANNOTATE type=ANNOTYPE_INSTR_BEGIN *//* ANNOTATE_INSTR_END ANNOTATE type=ANNOTYPE_INSTR_END */#define ANNOTATE_IGNORE_ALTERNATIVE ANNOTATE type=ANNOTYPE_IGNORE_ALTS#define ANNOTATE_INTRA_FUNCTION_CALL ANNOTATE type=ANNOTYPE_INTRA_FUNCTION_CALL#define ANNOTATE_UNRET_BEGIN ANNOTATE type=ANNOTYPE_UNRET_BEGIN#define ANNOTATE_REACHABLE ANNOTATE type=ANNOTYPE_REACHABLE#define ANNOTATE_NOCFI_SYM ANNOTATE type=ANNOTYPE_NOCFI#define ANNOTATE_DATA_SPECIAL ANNOTATE_DATA type=ANNOTYPE_DATA_SPECIAL#endif /* __ASSEMBLY__ */
#endif /* _LINUX_ANNOTATE_H */