arch/arc/include/asm/kprobes.h

   1 /*
   2  * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  */
   8
   9 #ifndef _ARC_KPROBES_H
  10 #define _ARC_KPROBES_H
  11
  12 #ifdef CONFIG_KPROBES
  13
  14 typedef u16 kprobe_opcode_t;
  15
  16 #define UNIMP_S_INSTRUCTION 0x79e0
  17 #define TRAP_S_2_INSTRUCTION 0x785e
  18
  19 #define MAX_INSN_SIZE   8
  20 #define MAX_STACK_SIZE  64
  21
  22 struct arch_specific_insn {
  23         int is_short;
  24         kprobe_opcode_t *t1_addr, *t2_addr;
  25         kprobe_opcode_t t1_opcode, t2_opcode;
  26 };
  27
  28 #define flush_insn_slot(p)  do {  } while (0)
  29
  30 #define kretprobe_blacklist_size    0
  31
  32 struct kprobe;
  33
  34 void arch_remove_kprobe(struct kprobe *p);
  35
  36 int kprobe_exceptions_notify(struct notifier_block *self,
  37                              unsigned long val, void *data);
  38
  39 struct prev_kprobe {
  40         struct kprobe *kp;
  41         unsigned long status;
  42 };
  43
  44 struct kprobe_ctlblk {
  45         unsigned int kprobe_status;
  46         struct pt_regs jprobe_saved_regs;
  47         char jprobes_stack[MAX_STACK_SIZE];
  48         struct prev_kprobe prev_kprobe;
  49 };
  50
  51 int kprobe_fault_handler(struct pt_regs *regs, unsigned long cause);
  52 void kretprobe_trampoline(void);
  53 void trap_is_kprobe(unsigned long address, struct pt_regs *regs);
  54 #else
  55 static void trap_is_kprobe(unsigned long address, struct pt_regs *regs)
  56 {
  57 }
  58 #endif
  59
  60 #endif