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/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef _ASM_UPROBES_H
#define _ASM_UPROBES_H
/*
* User-space Probes (UProbes) for sparc
*
* Copyright (C) 2013 Oracle, Inc.
*
* Authors:
* Jose E. Marchesi <[email protected]>
* Eric Saint Etienne <[email protected]>
*/
typedef u32 uprobe_opcode_t;
#define MAX_UINSN_BYTES 4
#define UPROBE_XOL_SLOT_BYTES (MAX_UINSN_BYTES * 2)
#define UPROBE_SWBP_INSN_SIZE 4
#define UPROBE_SWBP_INSN 0x91d02073 /* ta 0x73 */
#define UPROBE_STP_INSN 0x91d02074 /* ta 0x74 */
#define ANNUL_BIT (1 << 29)
struct arch_uprobe {
union {
u8 insn[MAX_UINSN_BYTES];
u32 ixol;
};
};
struct arch_uprobe_task {
u64 saved_tpc;
u64 saved_tnpc;
};
struct task_struct;
struct notifier_block;
extern int arch_uprobe_analyze_insn(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long addr);
extern int arch_uprobe_pre_xol(struct arch_uprobe *aup, struct pt_regs *regs);
extern int arch_uprobe_post_xol(struct arch_uprobe *aup, struct pt_regs *regs);
extern bool arch_uprobe_xol_was_trapped(struct task_struct *tsk);
extern int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val, void *data);
extern void arch_uprobe_abort_xol(struct arch_uprobe *aup, struct pt_regs *regs);
#endif /* _ASM_UPROBES_H */