/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* arch/arm/include/asm/kprobes.h
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*
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* Copyright (C) 2006, 2007 Motorola Inc.
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*/
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#ifndef _ARM_KPROBES_H
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#define _ARM_KPROBES_H
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#include <asm-generic/kprobes.h>
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#ifdef CONFIG_KPROBES
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#include <linux/types.h>
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#include <linux/ptrace.h>
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#include <linux/notifier.h>
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#define __ARCH_WANT_KPROBES_INSN_SLOT
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#define MAX_INSN_SIZE 2
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#define flush_insn_slot(p) do { } while (0)
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#define kretprobe_blacklist_size 0
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typedef u32 kprobe_opcode_t;
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struct kprobe;
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#include <asm/probes.h>
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#define arch_specific_insn arch_probes_insn
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struct prev_kprobe {
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struct kprobe *kp;
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unsigned int status;
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};
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/* per-cpu kprobe control block */
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struct kprobe_ctlblk {
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unsigned int kprobe_status;
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struct prev_kprobe prev_kprobe;
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};
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void arch_remove_kprobe(struct kprobe *);
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int kprobe_fault_handler(struct pt_regs *regs, unsigned int fsr);
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int kprobe_exceptions_notify(struct notifier_block *self,
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unsigned long val, void *data);
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/* optinsn template addresses */
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extern __visible kprobe_opcode_t optprobe_template_entry[];
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extern __visible kprobe_opcode_t optprobe_template_val[];
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extern __visible kprobe_opcode_t optprobe_template_call[];
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extern __visible kprobe_opcode_t optprobe_template_end[];
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extern __visible kprobe_opcode_t optprobe_template_sub_sp[];
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extern __visible kprobe_opcode_t optprobe_template_add_sp[];
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extern __visible kprobe_opcode_t optprobe_template_restore_begin[];
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extern __visible kprobe_opcode_t optprobe_template_restore_orig_insn[];
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extern __visible kprobe_opcode_t optprobe_template_restore_end[];
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#define MAX_OPTIMIZED_LENGTH 4
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#define MAX_OPTINSN_SIZE \
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((unsigned long)optprobe_template_end - \
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(unsigned long)optprobe_template_entry)
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#define RELATIVEJUMP_SIZE 4
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struct arch_optimized_insn {
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/*
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* copy of the original instructions.
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* Different from x86, ARM kprobe_opcode_t is u32.
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*/
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#define MAX_COPIED_INSN DIV_ROUND_UP(RELATIVEJUMP_SIZE, sizeof(kprobe_opcode_t))
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kprobe_opcode_t copied_insn[MAX_COPIED_INSN];
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/* detour code buffer */
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kprobe_opcode_t *insn;
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/*
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* We always copy one instruction on ARM,
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* so size will always be 4, and unlike x86, there is no
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* need for a size field.
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*/
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};
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#endif /* CONFIG_KPROBES */
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#endif /* _ARM_KPROBES_H */
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