arch/parisc/include/asm/kprobes.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * arch/parisc/include/asm/kprobes.h
   4  *
   5  * PA-RISC kprobes implementation
   6  *
   7  * Copyright (c) 2019 Sven Schnelle <svens@stackframe.org>
   8  */
   9
  10 #ifndef _PARISC_KPROBES_H
  11 #define _PARISC_KPROBES_H
  12
  13 #include <asm-generic/kprobes.h>
  14
  15 #ifdef CONFIG_KPROBES
  16
  17 #include <linux/types.h>
  18 #include <linux/ptrace.h>
  19 #include <linux/notifier.h>
  20
  21 #define PARISC_KPROBES_BREAK_INSN       0x3ff801f
  22 #define PARISC_KPROBES_BREAK_INSN2      0x3ff801e
  23 #define  __ARCH_WANT_KPROBES_INSN_SLOT
  24 #define MAX_INSN_SIZE 2
  25
  26 typedef u32 kprobe_opcode_t;
  27 struct kprobe;
  28
  29 void arch_remove_kprobe(struct kprobe *p);
  30
  31 #define flush_insn_slot(p) \
  32         flush_icache_range((unsigned long)&(p)->ainsn.insn[0], \
  33                            (unsigned long)&(p)->ainsn.insn[0] + \
  34                            MAX_INSN_SIZE*sizeof(kprobe_opcode_t))
  35
  36 #define kretprobe_blacklist_size    0
  37
  38 struct arch_specific_insn {
  39         kprobe_opcode_t *insn;
  40 };
  41
  42 struct prev_kprobe {
  43         struct kprobe *kp;
  44         unsigned long status;
  45 };
  46
  47 struct kprobe_ctlblk {
  48         unsigned int kprobe_status;
  49         struct prev_kprobe prev_kprobe;
  50         unsigned long iaoq[2];
  51 };
  52
  53 int __kprobes parisc_kprobe_break_handler(struct pt_regs *regs);
  54 int __kprobes parisc_kprobe_ss_handler(struct pt_regs *regs);
  55 static inline int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
  56 {
  57         return 0;
  58 }
  59
  60 #endif /* CONFIG_KPROBES */
  61 #endif /* _PARISC_KPROBES_H */