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