mirror of
https://github.com/torvalds/linux.git
synced 2024-11-16 09:02:00 +00:00
e077341024
Follow suit from kprobe implementations on other archs and make kretprobe_trampoline non-static. Ftrace implmentation (more specifically, kernel/trace/trace.c) requires access to it (see-> http://kerneltrap.org/mailarchive/linux-kernel/2008/5/27/1955234). Signed-off-by: Abhishek Sagar <sagar.abhishek@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
80 lines
2.1 KiB
C
80 lines
2.1 KiB
C
/*
|
|
* include/asm-arm/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 <linux/types.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/percpu.h>
|
|
|
|
#define __ARCH_WANT_KPROBES_INSN_SLOT
|
|
#define MAX_INSN_SIZE 2
|
|
#define MAX_STACK_SIZE 64 /* 32 would probably be OK */
|
|
|
|
/*
|
|
* This undefined instruction must be unique and
|
|
* reserved solely for kprobes' use.
|
|
*/
|
|
#define KPROBE_BREAKPOINT_INSTRUCTION 0xe7f001f8
|
|
|
|
#define regs_return_value(regs) ((regs)->ARM_r0)
|
|
#define flush_insn_slot(p) do { } while (0)
|
|
#define kretprobe_blacklist_size 0
|
|
|
|
typedef u32 kprobe_opcode_t;
|
|
|
|
struct kprobe;
|
|
typedef void (kprobe_insn_handler_t)(struct kprobe *, struct pt_regs *);
|
|
|
|
/* Architecture specific copy of original instruction. */
|
|
struct arch_specific_insn {
|
|
kprobe_opcode_t *insn;
|
|
kprobe_insn_handler_t *insn_handler;
|
|
};
|
|
|
|
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 *);
|
|
void kretprobe_trampoline(void);
|
|
|
|
int kprobe_trap_handler(struct pt_regs *regs, unsigned int instr);
|
|
int kprobe_fault_handler(struct pt_regs *regs, unsigned int fsr);
|
|
int kprobe_exceptions_notify(struct notifier_block *self,
|
|
unsigned long val, void *data);
|
|
|
|
enum kprobe_insn {
|
|
INSN_REJECTED,
|
|
INSN_GOOD,
|
|
INSN_GOOD_NO_SLOT
|
|
};
|
|
|
|
enum kprobe_insn arm_kprobe_decode_insn(kprobe_opcode_t,
|
|
struct arch_specific_insn *);
|
|
void __init arm_kprobe_decode_init(void);
|
|
|
|
#endif /* _ARM_KPROBES_H */
|