/* 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 <jose.marchesi@oracle.com>
 *      Eric Saint Etienne <eric.saint.etienne@oracle.com>
 */

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 */