arch/sh/include/asm/kprobes.h

   1 #ifndef __ASM_SH_KPROBES_H
   2 #define __ASM_SH_KPROBES_H
   3
   4 #ifdef CONFIG_KPROBES
   5
   6 #include <linux/types.h>
   7 #include <linux/ptrace.h>
   8
   9 typedef insn_size_t kprobe_opcode_t;
  10 #define BREAKPOINT_INSTRUCTION  0xc33a
  11
  12 #define MAX_INSN_SIZE 16
  13 #define MAX_STACK_SIZE 64
  14 #define MIN_STACK_SIZE(ADDR) (((MAX_STACK_SIZE) < \
  15         (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) \
  16         ? (MAX_STACK_SIZE) \
  17         : (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR)))
  18
  19 #define flush_insn_slot(p)              do { } while (0)
  20 #define kretprobe_blacklist_size        0
  21
  22 struct kprobe;
  23
  24 void arch_remove_kprobe(struct kprobe *);
  25 void kretprobe_trampoline(void);
  26 void jprobe_return_end(void);
  27
  28 /* Architecture specific copy of original instruction*/
  29 struct arch_specific_insn {
  30         /* copy of the original instruction */
  31         kprobe_opcode_t insn[MAX_INSN_SIZE];
  32 };
  33
  34 struct prev_kprobe {
  35         struct kprobe *kp;
  36         unsigned long status;
  37 };
  38
  39 /* per-cpu kprobe control block */
  40 struct kprobe_ctlblk {
  41         unsigned long kprobe_status;
  42         unsigned long jprobe_saved_r15;
  43         struct pt_regs jprobe_saved_regs;
  44         kprobe_opcode_t jprobes_stack[MAX_STACK_SIZE];
  45         struct prev_kprobe prev_kprobe;
  46 };
  47
  48 extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
  49 extern int kprobe_exceptions_notify(struct notifier_block *self,
  50                                     unsigned long val, void *data);
  51 extern int kprobe_handle_illslot(unsigned long pc);
  52 #else
  53
  54 #define kprobe_handle_illslot(pc)       (-1)
  55
  56 #endif /* CONFIG_KPROBES */
  57 #endif /* __ASM_SH_KPROBES_H */