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 #include <asm-generic/kprobes.h>
  13
  14 #ifdef CONFIG_KPROBES
  15
  16 typedef u16 kprobe_opcode_t;
  17
  18 #define UNIMP_S_INSTRUCTION 0x79e0
  19 #define TRAP_S_2_INSTRUCTION 0x785e
  20
  21 #define MAX_INSN_SIZE   8
  22 #define MAX_STACK_SIZE  64
  23
  24 struct arch_specific_insn {
  25         int is_short;
  26         kprobe_opcode_t *t1_addr, *t2_addr;
  27         kprobe_opcode_t t1_opcode, t2_opcode;
  28 };
  29
  30 #define flush_insn_slot(p)  do {  } while (0)
  31
  32 #define kretprobe_blacklist_size    0
  33
  34 struct kprobe;
  35
  36 void arch_remove_kprobe(struct kprobe *p);
  37
  38 int kprobe_exceptions_notify(struct notifier_block *self,
  39                              unsigned long val, void *data);
  40
  41 struct prev_kprobe {
  42         struct kprobe *kp;
  43         unsigned long status;
  44 };
  45
  46 struct kprobe_ctlblk {
  47         unsigned int kprobe_status;
  48         struct pt_regs jprobe_saved_regs;
  49         char jprobes_stack[MAX_STACK_SIZE];
  50         struct prev_kprobe prev_kprobe;
  51 };
  52
  53 int kprobe_fault_handler(struct pt_regs *regs, unsigned long cause);
  54 void kretprobe_trampoline(void);
  55 void trap_is_kprobe(unsigned long address, struct pt_regs *regs);
  56 #else
  57 static void trap_is_kprobe(unsigned long address, struct pt_regs *regs)
  58 {
  59 }
  60 #endif /* CONFIG_KPROBES */
  61
  62 #endif /* _ARC_KPROBES_H */