91 lines
2.6 KiB
C
91 lines
2.6 KiB
C
|
/*
|
||
|
|
* arch/arm/include/asm/kprobes.h
|
||
|
|
*
|
||
|
|
* Copyright (C) 2006, 2007 Motorola Inc.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License version 2 as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
* General Public License for more details.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _ARM_KPROBES_H
|
||
|
|
#define _ARM_KPROBES_H
|
||
|
|
|
||
|
|
#include <asm-generic/kprobes.h>
|
||
|
|
|
||
|
|
#ifdef CONFIG_KPROBES
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/ptrace.h>
|
||
|
|
#include <linux/notifier.h>
|
||
|
|
|
||
|
|
#define __ARCH_WANT_KPROBES_INSN_SLOT
|
||
|
|
#define MAX_INSN_SIZE 2
|
||
|
|
|
||
|
|
#define flush_insn_slot(p) do { } while (0)
|
||
|
|
#define kretprobe_blacklist_size 0
|
||
|
|
|
||
|
|
typedef u32 kprobe_opcode_t;
|
||
|
|
struct kprobe;
|
||
|
|
#include <asm/probes.h>
|
||
|
|
|
||
|
|
#define arch_specific_insn arch_probes_insn
|
||
|
|
|
||
|
|
struct prev_kprobe {
|
||
|
|
struct kprobe *kp;
|
||
|
|
unsigned int status;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* per-cpu kprobe control block */
|
||
|
|
struct kprobe_ctlblk {
|
||
|
|
unsigned int kprobe_status;
|
||
|
|
struct prev_kprobe prev_kprobe;
|
||
|
|
struct pt_regs jprobe_saved_regs;
|
||
|
|
char jprobes_stack[MAX_STACK_SIZE];
|
||
|
|
};
|
||
|
|
|
||
|
|
void arch_remove_kprobe(struct kprobe *);
|
||
|
|
int kprobe_fault_handler(struct pt_regs *regs, unsigned int fsr);
|
||
|
|
int kprobe_exceptions_notify(struct notifier_block *self,
|
||
|
|
unsigned long val, void *data);
|
||
|
|
|
||
|
|
/* optinsn template addresses */
|
||
|
|
extern __visible kprobe_opcode_t optprobe_template_entry;
|
||
|
|
extern __visible kprobe_opcode_t optprobe_template_val;
|
||
|
|
extern __visible kprobe_opcode_t optprobe_template_call;
|
||
|
|
extern __visible kprobe_opcode_t optprobe_template_end;
|
||
|
|
extern __visible kprobe_opcode_t optprobe_template_sub_sp;
|
||
|
|
extern __visible kprobe_opcode_t optprobe_template_add_sp;
|
||
|
|
extern __visible kprobe_opcode_t optprobe_template_restore_begin;
|
||
|
|
extern __visible kprobe_opcode_t optprobe_template_restore_orig_insn;
|
||
|
|
extern __visible kprobe_opcode_t optprobe_template_restore_end;
|
||
|
|
|
||
|
|
#define MAX_OPTIMIZED_LENGTH 4
|
||
|
|
#define MAX_OPTINSN_SIZE \
|
||
|
|
((unsigned long)&optprobe_template_end - \
|
||
|
|
(unsigned long)&optprobe_template_entry)
|
||
|
|
#define RELATIVEJUMP_SIZE 4
|
||
|
|
|
||
|
|
struct arch_optimized_insn {
|
||
|
|
/*
|
||
|
|
* copy of the original instructions.
|
||
|
|
* Different from x86, ARM kprobe_opcode_t is u32.
|
||
|
|
*/
|
||
|
|
#define MAX_COPIED_INSN DIV_ROUND_UP(RELATIVEJUMP_SIZE, sizeof(kprobe_opcode_t))
|
||
|
|
kprobe_opcode_t copied_insn[MAX_COPIED_INSN];
|
||
|
|
/* detour code buffer */
|
||
|
|
kprobe_opcode_t *insn;
|
||
|
|
/*
|
||
|
|
* We always copy one instruction on ARM,
|
||
|
|
* so size will always be 4, and unlike x86, there is no
|
||
|
|
* need for a size field.
|
||
|
|
*/
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* CONFIG_KPROBES */
|
||
|
|
#endif /* _ARM_KPROBES_H */
|