arch/arm64/kernel/probes/decode-insn.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * arch/arm64/kernel/probes/decode-insn.h
   4  *
   5  * Copyright (C) 2013 Linaro Limited.
   6  */
   7
   8 #ifndef _ARM_KERNEL_KPROBES_ARM64_H
   9 #define _ARM_KERNEL_KPROBES_ARM64_H
  10
  11 #include <asm/kprobes.h>
  12
  13 /*
  14  * ARM strongly recommends a limit of 128 bytes between LoadExcl and
  15  * StoreExcl instructions in a single thread of execution. So keep the
  16  * max atomic context size as 32.
  17  */
  18 #define MAX_ATOMIC_CONTEXT_SIZE (128 / sizeof(kprobe_opcode_t))
  19
  20 enum probe_insn {
  21         INSN_REJECTED,
  22         INSN_GOOD_NO_SLOT,
  23         INSN_GOOD,
  24 };
  25
  26 #ifdef CONFIG_KPROBES
  27 enum probe_insn __kprobes
  28 arm_kprobe_decode_insn(kprobe_opcode_t *addr, struct arch_specific_insn *asi);
  29 #endif
  30 enum probe_insn __kprobes
  31 arm_probe_decode_insn(probe_opcode_t insn, struct arch_probe_insn *asi);
  32
  33 #endif /* _ARM_KERNEL_KPROBES_ARM64_H */