LXR linux/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
   9typedef 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
  22struct kprobe;
  23
  24void arch_remove_kprobe(struct kprobe *);
  25void kretprobe_trampoline(void);
  26void jprobe_return_end(void);
  27
  28/* Architecture specific copy of original instruction*/
  29struct arch_specific_insn {
  30        /* copy of the original instruction */
  31        kprobe_opcode_t insn[MAX_INSN_SIZE];
  32};
  33
  34struct prev_kprobe {
  35        struct kprobe *kp;
  36        unsigned long status;
  37};
  38
  39/* per-cpu kprobe control block */
  40struct 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
  48extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
  49extern int kprobe_exceptions_notify(struct notifier_block *self,
  50                                    unsigned long val, void *data);
  51extern 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 */
  58