cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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kprobes.h (2248B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * arch/arm/include/asm/kprobes.h
      4 *
      5 * Copyright (C) 2006, 2007 Motorola Inc.
      6 */
      7
      8#ifndef _ARM_KPROBES_H
      9#define _ARM_KPROBES_H
     10
     11#include <asm-generic/kprobes.h>
     12
     13#ifdef CONFIG_KPROBES
     14#include <linux/types.h>
     15#include <linux/ptrace.h>
     16#include <linux/notifier.h>
     17
     18#define __ARCH_WANT_KPROBES_INSN_SLOT
     19#define MAX_INSN_SIZE			2
     20
     21#define flush_insn_slot(p)		do { } while (0)
     22#define kretprobe_blacklist_size	0
     23
     24typedef u32 kprobe_opcode_t;
     25struct kprobe;
     26#include <asm/probes.h>
     27
     28#define	arch_specific_insn	arch_probes_insn
     29
     30struct prev_kprobe {
     31	struct kprobe *kp;
     32	unsigned int status;
     33};
     34
     35/* per-cpu kprobe control block */
     36struct kprobe_ctlblk {
     37	unsigned int kprobe_status;
     38	struct prev_kprobe prev_kprobe;
     39};
     40
     41void arch_remove_kprobe(struct kprobe *);
     42int kprobe_fault_handler(struct pt_regs *regs, unsigned int fsr);
     43int kprobe_exceptions_notify(struct notifier_block *self,
     44			     unsigned long val, void *data);
     45
     46/* optinsn template addresses */
     47extern __visible kprobe_opcode_t optprobe_template_entry[];
     48extern __visible kprobe_opcode_t optprobe_template_val[];
     49extern __visible kprobe_opcode_t optprobe_template_call[];
     50extern __visible kprobe_opcode_t optprobe_template_end[];
     51extern __visible kprobe_opcode_t optprobe_template_sub_sp[];
     52extern __visible kprobe_opcode_t optprobe_template_add_sp[];
     53extern __visible kprobe_opcode_t optprobe_template_restore_begin[];
     54extern __visible kprobe_opcode_t optprobe_template_restore_orig_insn[];
     55extern __visible kprobe_opcode_t optprobe_template_restore_end[];
     56
     57#define MAX_OPTIMIZED_LENGTH	4
     58#define MAX_OPTINSN_SIZE				\
     59	((unsigned long)optprobe_template_end -	\
     60	 (unsigned long)optprobe_template_entry)
     61#define RELATIVEJUMP_SIZE	4
     62
     63struct arch_optimized_insn {
     64	/*
     65	 * copy of the original instructions.
     66	 * Different from x86, ARM kprobe_opcode_t is u32.
     67	 */
     68#define MAX_COPIED_INSN	DIV_ROUND_UP(RELATIVEJUMP_SIZE, sizeof(kprobe_opcode_t))
     69	kprobe_opcode_t copied_insn[MAX_COPIED_INSN];
     70	/* detour code buffer */
     71	kprobe_opcode_t *insn;
     72	/*
     73	 * We always copy one instruction on ARM,
     74	 * so size will always be 4, and unlike x86, there is no
     75	 * need for a size field.
     76	 */
     77};
     78
     79#endif /* CONFIG_KPROBES */
     80#endif /* _ARM_KPROBES_H */