arch/arm/probes/kprobes/checkers.h

   1 /*
   2  * arch/arm/probes/kprobes/checkers.h
   3  *
   4  * Copyright (C) 2014 Huawei Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  */
  15 #ifndef _ARM_KERNEL_PROBES_CHECKERS_H
  16 #define _ARM_KERNEL_PROBES_CHECKERS_H
  17
  18 #include <linux/kernel.h>
  19 #include <linux/types.h>
  20 #include "../decode.h"
  21
  22 extern probes_check_t checker_stack_use_none;
  23 extern probes_check_t checker_stack_use_unknown;
  24 #ifdef CONFIG_THUMB2_KERNEL
  25 extern probes_check_t checker_stack_use_imm_0xx;
  26 #else
  27 extern probes_check_t checker_stack_use_imm_x0x;
  28 #endif
  29 extern probes_check_t checker_stack_use_imm_xxx;
  30 extern probes_check_t checker_stack_use_stmdx;
  31
  32 enum {
  33         STACK_USE_NONE,
  34         STACK_USE_UNKNOWN,
  35 #ifdef CONFIG_THUMB2_KERNEL
  36         STACK_USE_FIXED_0XX,
  37         STACK_USE_T32STRD,
  38 #else
  39         STACK_USE_FIXED_X0X,
  40 #endif
  41         STACK_USE_FIXED_XXX,
  42         STACK_USE_STMDX,
  43         NUM_STACK_USE_TYPES
  44 };
  45
  46 extern const union decode_action stack_check_actions[];
  47
  48 #ifndef CONFIG_THUMB2_KERNEL
  49 extern const struct decode_checker arm_stack_checker[];
  50 extern const struct decode_checker arm_regs_checker[];
  51 #else
  52 #endif
  53 extern const struct decode_checker t32_stack_checker[];
  54 extern const struct decode_checker t16_stack_checker[];
  55 #endif