arch/avr32/include/asm/kprobes.h

   1 /*
   2  * Kernel Probes (KProbes)
   3  *
   4  * Copyright (C) 2005-2006 Atmel Corporation
   5  * Copyright (C) IBM Corporation, 2002, 2004
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11 #ifndef __ASM_AVR32_KPROBES_H
  12 #define __ASM_AVR32_KPROBES_H
  13
  14 #include <linux/types.h>
  15
  16 typedef u16     kprobe_opcode_t;
  17 #define BREAKPOINT_INSTRUCTION  0xd673  /* breakpoint */
  18 #define MAX_INSN_SIZE           2
  19 #define MAX_STACK_SIZE          64      /* 32 would probably be OK */
  20
  21 #define kretprobe_blacklist_size 0
  22
  23 #define arch_remove_kprobe(p)   do { } while (0)
  24
  25 /* Architecture specific copy of original instruction */
  26 struct arch_specific_insn {
  27         kprobe_opcode_t insn[MAX_INSN_SIZE];
  28 };
  29
  30 struct prev_kprobe {
  31         struct kprobe *kp;
  32         unsigned int status;
  33 };
  34
  35 /* per-cpu kprobe control block */
  36 struct kprobe_ctlblk {
  37         unsigned int kprobe_status;
  38         struct prev_kprobe prev_kprobe;
  39         struct pt_regs jprobe_saved_regs;
  40         char jprobes_stack[MAX_STACK_SIZE];
  41 };
  42
  43 extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
  44 extern int kprobe_exceptions_notify(struct notifier_block *self,
  45                                     unsigned long val, void *data);
  46
  47 #define flush_insn_slot(p)      do { } while (0)
  48
  49 #endif /* __ASM_AVR32_KPROBES_H */