/* 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
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