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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* arch/arm/include/asm/probes.h
*
* Original contents copied from arch/arm/include/asm/kprobes.h
* which contains the following notice...
*
* Copyright (C) 2006, 2007 Motorola Inc.
*/
#ifndef _ASM_PROBES_H
#define _ASM_PROBES_H
#ifndef __ASSEMBLY__
typedef u32 probes_opcode_t;
struct arch_probes_insn;
typedef void (probes_insn_handler_t)(probes_opcode_t,
struct arch_probes_insn *,
struct pt_regs *);
typedef unsigned long (probes_check_cc)(unsigned long);
typedef void (probes_insn_singlestep_t)(probes_opcode_t,
struct arch_probes_insn *,
struct pt_regs *);
typedef void (probes_insn_fn_t)(void);
/* Architecture specific copy of original instruction. */
struct arch_probes_insn {
probes_opcode_t *insn;
probes_insn_handler_t *insn_handler;
probes_check_cc *insn_check_cc;
probes_insn_singlestep_t *insn_singlestep;
probes_insn_fn_t *insn_fn;
int stack_space;
unsigned long register_usage_flags;
bool kprobe_direct_exec;
};
#endif /* __ASSEMBLY__ */
/*
* We assume one instruction can consume at most 64 bytes stack, which is
* 'push {r0-r15}'. Instructions consume more or unknown stack space like
* 'str r0, [sp, #-80]' and 'str r0, [sp, r1]' should be prohibit to probe.
*/
#define MAX_STACK_SIZE 64
#endif