41 lines
810 B
C
41 lines
810 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ASM_RISCV_CFI_H
|
|
#define _ASM_RISCV_CFI_H
|
|
|
|
/*
|
|
* Clang Control Flow Integrity (CFI) support.
|
|
*
|
|
* Copyright (C) 2023 Google LLC
|
|
*/
|
|
#include <linux/bug.h>
|
|
|
|
struct pt_regs;
|
|
|
|
#ifdef CONFIG_CFI_CLANG
|
|
enum bug_trap_type handle_cfi_failure(struct pt_regs *regs);
|
|
#define __bpfcall
|
|
static inline int cfi_get_offset(void)
|
|
{
|
|
return 4;
|
|
}
|
|
|
|
#define cfi_get_offset cfi_get_offset
|
|
extern u32 cfi_bpf_hash;
|
|
extern u32 cfi_bpf_subprog_hash;
|
|
extern u32 cfi_get_func_hash(void *func);
|
|
#else
|
|
static inline enum bug_trap_type handle_cfi_failure(struct pt_regs *regs)
|
|
{
|
|
return BUG_TRAP_TYPE_NONE;
|
|
}
|
|
|
|
#define cfi_bpf_hash 0U
|
|
#define cfi_bpf_subprog_hash 0U
|
|
static inline u32 cfi_get_func_hash(void *func)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_CFI_CLANG */
|
|
|
|
#endif /* _ASM_RISCV_CFI_H */
|