arch/riscv/include/asm/kprobes.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copied from arch/arm64/include/asm/kprobes.h
   4  *
   5  * Copyright (C) 2013 Linaro Limited
   6  * Copyright (C) 2017 SiFive
   7  */
   8
   9 #ifndef _ASM_RISCV_KPROBES_H
  10 #define _ASM_RISCV_KPROBES_H
  11
  12 #include <asm-generic/kprobes.h>
  13
  14 #ifdef CONFIG_KPROBES
  15 #include <linux/types.h>
  16 #include <linux/ptrace.h>
  17 #include <linux/percpu.h>
  18
  19 #define __ARCH_WANT_KPROBES_INSN_SLOT
  20 #define MAX_INSN_SIZE                   2
  21
  22 #define flush_insn_slot(p)              do { } while (0)
  23 #define kretprobe_blacklist_size        0
  24
  25 #include <asm/probes.h>
  26
  27 struct prev_kprobe {
  28         struct kprobe *kp;
  29         unsigned int status;
  30 };
  31
  32 /* per-cpu kprobe control block */
  33 struct kprobe_ctlblk {
  34         unsigned int kprobe_status;
  35         unsigned long saved_status;
  36         struct prev_kprobe prev_kprobe;
  37 };
  38
  39 void arch_remove_kprobe(struct kprobe *p);
  40 int kprobe_fault_handler(struct pt_regs *regs, unsigned int trapnr);
  41 bool kprobe_breakpoint_handler(struct pt_regs *regs);
  42 bool kprobe_single_step_handler(struct pt_regs *regs);
  43 #else
  44 static inline bool kprobe_breakpoint_handler(struct pt_regs *regs)
  45 {
  46         return false;
  47 }
  48
  49 static inline bool kprobe_single_step_handler(struct pt_regs *regs)
  50 {
  51         return false;
  52 }
  53 #endif /* CONFIG_KPROBES */
  54 #endif /* _ASM_RISCV_KPROBES_H */