arch/s390/include/asm/uprobes.h

   1 /*
   2  *    User-space Probes (UProbes) for s390
   3  *
   4  *    Copyright IBM Corp. 2014
   5  *    Author(s): Jan Willeke,
   6  */
   7
   8 #ifndef _ASM_UPROBES_H
   9 #define _ASM_UPROBES_H
  10
  11 #include <linux/notifier.h>
  12
  13 typedef u16 uprobe_opcode_t;
  14
  15 #define UPROBE_XOL_SLOT_BYTES   256 /* cache aligned */
  16
  17 #define UPROBE_SWBP_INSN        0x0002
  18 #define UPROBE_SWBP_INSN_SIZE   2
  19
  20 struct arch_uprobe {
  21         union{
  22                 uprobe_opcode_t insn[3];
  23                 uprobe_opcode_t ixol[3];
  24         };
  25         unsigned int saved_per : 1;
  26         unsigned int saved_int_code;
  27 };
  28
  29 struct arch_uprobe_task {
  30 };
  31
  32 int arch_uprobe_analyze_insn(struct arch_uprobe *aup, struct mm_struct *mm,
  33                              unsigned long addr);
  34 int arch_uprobe_pre_xol(struct arch_uprobe *aup, struct pt_regs *regs);
  35 int arch_uprobe_post_xol(struct arch_uprobe *aup, struct pt_regs *regs);
  36 bool arch_uprobe_xol_was_trapped(struct task_struct *tsk);
  37 int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val,
  38                                  void *data);
  39 void arch_uprobe_abort_xol(struct arch_uprobe *ap, struct pt_regs *regs);
  40 unsigned long arch_uretprobe_hijack_return_addr(unsigned long trampoline,
  41                                                 struct pt_regs *regs);
  42 #endif  /* _ASM_UPROBES_H */