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