blob: 5e134f4ce8b75943cb7470ae0490e84dc50daa1a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Clang Control Flow Integrity (CFI) support.
*
* Copyright (C) 2022 Google LLC
*/
#ifndef _LINUX_CFI_H
#define _LINUX_CFI_H
#include <linux/bug.h>
#include <linux/module.h>
#ifdef CONFIG_CFI_CLANG
enum bug_trap_type report_cfi_failure(struct pt_regs *regs, unsigned long addr,
unsigned long *target, u32 type);
static inline enum bug_trap_type report_cfi_failure_noaddr(struct pt_regs *regs,
unsigned long addr)
{
return report_cfi_failure(regs, addr, NULL, 0);
}
#ifdef CONFIG_ARCH_USES_CFI_TRAPS
bool is_cfi_trap(unsigned long addr);
#endif
#endif /* CONFIG_CFI_CLANG */
#ifdef CONFIG_MODULES
#ifdef CONFIG_ARCH_USES_CFI_TRAPS
void module_cfi_finalize(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs,
struct module *mod);
#else
static inline void module_cfi_finalize(const Elf_Ehdr *hdr,
const Elf_Shdr *sechdrs,
struct module *mod) {}
#endif /* CONFIG_ARCH_USES_CFI_TRAPS */
#endif /* CONFIG_MODULES */
#endif /* _LINUX_CFI_H */
|
