mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-06 02:50:43 +00:00
46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
![]() |
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
/*
|
||
|
* Clang Control Flow Integrity (CFI) type definitions.
|
||
|
*/
|
||
|
#ifndef _LINUX_CFI_TYPES_H
|
||
|
#define _LINUX_CFI_TYPES_H
|
||
|
|
||
|
#ifdef __ASSEMBLY__
|
||
|
#include <linux/linkage.h>
|
||
|
|
||
|
#ifdef CONFIG_CFI_CLANG
|
||
|
/*
|
||
|
* Use the __kcfi_typeid_<function> type identifier symbol to
|
||
|
* annotate indirectly called assembly functions. The compiler emits
|
||
|
* these symbols for all address-taken function declarations in C
|
||
|
* code.
|
||
|
*/
|
||
|
#ifndef __CFI_TYPE
|
||
|
#define __CFI_TYPE(name) \
|
||
|
.4byte __kcfi_typeid_##name
|
||
|
#endif
|
||
|
|
||
|
#define SYM_TYPED_ENTRY(name, linkage, align...) \
|
||
|
linkage(name) ASM_NL \
|
||
|
align ASM_NL \
|
||
|
__CFI_TYPE(name) ASM_NL \
|
||
|
name:
|
||
|
|
||
|
#define SYM_TYPED_START(name, linkage, align...) \
|
||
|
SYM_TYPED_ENTRY(name, linkage, align)
|
||
|
|
||
|
#else /* CONFIG_CFI_CLANG */
|
||
|
|
||
|
#define SYM_TYPED_START(name, linkage, align...) \
|
||
|
SYM_START(name, linkage, align)
|
||
|
|
||
|
#endif /* CONFIG_CFI_CLANG */
|
||
|
|
||
|
#ifndef SYM_TYPED_FUNC_START
|
||
|
#define SYM_TYPED_FUNC_START(name) \
|
||
|
SYM_TYPED_START(name, SYM_L_GLOBAL, SYM_A_ALIGN)
|
||
|
#endif
|
||
|
|
||
|
#endif /* __ASSEMBLY__ */
|
||
|
#endif /* _LINUX_CFI_TYPES_H */
|