1 /* 2 * arch/arm64/kernel/probes/decode-insn.h 3 * 4 * Copyright (C) 2013 Linaro Limited. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * General Public License for more details. 14 */ 15 16 #ifndef _ARM_KERNEL_KPROBES_ARM64_H 17 #define _ARM_KERNEL_KPROBES_ARM64_H 18 19 /* 20 * ARM strongly recommends a limit of 128 bytes between LoadExcl and 21 * StoreExcl instructions in a single thread of execution. So keep the 22 * max atomic context size as 32. 23 */ 24 #define MAX_ATOMIC_CONTEXT_SIZE (128 / sizeof(kprobe_opcode_t)) 25 26 enum kprobe_insn { 27 INSN_REJECTED, 28 INSN_GOOD_NO_SLOT, 29 INSN_GOOD, 30 }; 31 32 enum kprobe_insn __kprobes 33 arm_kprobe_decode_insn(kprobe_opcode_t *addr, struct arch_specific_insn *asi); 34 35 #endif /* _ARM_KERNEL_KPROBES_ARM64_H */ 36