1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * arch/arm/include/asm/probes.h 4 * 5 * Original contents copied from arch/arm/include/asm/kprobes.h 6 * which contains the following notice... 7 * 8 * Copyright (C) 2006, 2007 Motorola Inc. 9 */ 10 11#ifndef _ASM_PROBES_H 12#define _ASM_PROBES_H 13 14#ifndef __ASSEMBLY__ 15 16typedef u32 probes_opcode_t; 17 18struct arch_probes_insn; 19typedef void (probes_insn_handler_t)(probes_opcode_t, 20 struct arch_probes_insn *, 21 struct pt_regs *); 22typedef unsigned long (probes_check_cc)(unsigned long); 23typedef void (probes_insn_singlestep_t)(probes_opcode_t, 24 struct arch_probes_insn *, 25 struct pt_regs *); 26typedef void (probes_insn_fn_t)(void); 27 28/* Architecture specific copy of original instruction. */ 29struct arch_probes_insn { 30 probes_opcode_t *insn; 31 probes_insn_handler_t *insn_handler; 32 probes_check_cc *insn_check_cc; 33 probes_insn_singlestep_t *insn_singlestep; 34 probes_insn_fn_t *insn_fn; 35 int stack_space; 36 unsigned long register_usage_flags; 37 bool kprobe_direct_exec; 38}; 39 40#endif /* __ASSEMBLY__ */ 41 42/* 43 * We assume one instruction can consume at most 64 bytes stack, which is 44 * 'push {r0-r15}'. Instructions consume more or unknown stack space like 45 * 'str r0, [sp, #-80]' and 'str r0, [sp, r1]' should be prohibit to probe. 46 */ 47#define MAX_STACK_SIZE 64 48 49#endif 50