1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * arch/arm/include/asm/probes.h 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Original contents copied from arch/arm/include/asm/kprobes.h 6*4882a593Smuzhiyun * which contains the following notice... 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * Copyright (C) 2006, 2007 Motorola Inc. 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #ifndef _ASM_PROBES_H 12*4882a593Smuzhiyun #define _ASM_PROBES_H 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun #ifndef __ASSEMBLY__ 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun typedef u32 probes_opcode_t; 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun struct arch_probes_insn; 19*4882a593Smuzhiyun typedef void (probes_insn_handler_t)(probes_opcode_t, 20*4882a593Smuzhiyun struct arch_probes_insn *, 21*4882a593Smuzhiyun struct pt_regs *); 22*4882a593Smuzhiyun typedef unsigned long (probes_check_cc)(unsigned long); 23*4882a593Smuzhiyun typedef void (probes_insn_singlestep_t)(probes_opcode_t, 24*4882a593Smuzhiyun struct arch_probes_insn *, 25*4882a593Smuzhiyun struct pt_regs *); 26*4882a593Smuzhiyun typedef void (probes_insn_fn_t)(void); 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun /* Architecture specific copy of original instruction. */ 29*4882a593Smuzhiyun struct arch_probes_insn { 30*4882a593Smuzhiyun probes_opcode_t *insn; 31*4882a593Smuzhiyun probes_insn_handler_t *insn_handler; 32*4882a593Smuzhiyun probes_check_cc *insn_check_cc; 33*4882a593Smuzhiyun probes_insn_singlestep_t *insn_singlestep; 34*4882a593Smuzhiyun probes_insn_fn_t *insn_fn; 35*4882a593Smuzhiyun int stack_space; 36*4882a593Smuzhiyun unsigned long register_usage_flags; 37*4882a593Smuzhiyun bool kprobe_direct_exec; 38*4882a593Smuzhiyun }; 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun #endif /* __ASSEMBLY__ */ 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun /* 43*4882a593Smuzhiyun * We assume one instruction can consume at most 64 bytes stack, which is 44*4882a593Smuzhiyun * 'push {r0-r15}'. Instructions consume more or unknown stack space like 45*4882a593Smuzhiyun * 'str r0, [sp, #-80]' and 'str r0, [sp, r1]' should be prohibit to probe. 46*4882a593Smuzhiyun */ 47*4882a593Smuzhiyun #define MAX_STACK_SIZE 64 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun #endif 50