arch/arm/probes/kprobes/core.h

   1 /*
   2  * arch/arm/kernel/kprobes.h
   3  *
   4  * Copyright (C) 2011 Jon Medhurst <tixy@yxit.co.uk>.
   5  *
   6  * Some contents moved here from arch/arm/include/asm/kprobes.h which is
   7  * Copyright (C) 2006, 2007 Motorola Inc.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  */
  18
  19 #ifndef _ARM_KERNEL_KPROBES_H
  20 #define _ARM_KERNEL_KPROBES_H
  21
  22 #include <asm/kprobes.h>
  23 #include "../decode.h"
  24
  25 /*
  26  * These undefined instructions must be unique and
  27  * reserved solely for kprobes' use.
  28  */
  29 #define KPROBE_ARM_BREAKPOINT_INSTRUCTION       0x07f001f8
  30 #define KPROBE_THUMB16_BREAKPOINT_INSTRUCTION   0xde18
  31 #define KPROBE_THUMB32_BREAKPOINT_INSTRUCTION   0xf7f0a018
  32
  33 extern void kprobes_remove_breakpoint(void *addr, unsigned int insn);
  34
  35 enum probes_insn __kprobes
  36 kprobe_decode_ldmstm(kprobe_opcode_t insn, struct arch_probes_insn *asi,
  37                 const struct decode_header *h);
  38
  39 typedef enum probes_insn (kprobe_decode_insn_t)(probes_opcode_t,
  40                                                 struct arch_probes_insn *,
  41                                                 bool,
  42                                                 const union decode_action *,
  43                                                 const struct decode_checker *[]);
  44
  45 #ifdef CONFIG_THUMB2_KERNEL
  46
  47 extern const union decode_action kprobes_t32_actions[];
  48 extern const union decode_action kprobes_t16_actions[];
  49 extern const struct decode_checker *kprobes_t32_checkers[];
  50 extern const struct decode_checker *kprobes_t16_checkers[];
  51 #else /* !CONFIG_THUMB2_KERNEL */
  52
  53 extern const union decode_action kprobes_arm_actions[];
  54 extern const struct decode_checker *kprobes_arm_checkers[];
  55
  56 #endif
  57
  58 #endif /* _ARM_KERNEL_KPROBES_H */