| Allen Pais | e8f4aa6 | 2016-10-13 10:06:13 +0530 | [diff] [blame] | 1 | #ifndef _ASM_UPROBES_H |
| 2 | #define _ASM_UPROBES_H |
| 3 | /* |
| 4 | * User-space Probes (UProbes) for sparc |
| 5 | * |
| 6 | * Copyright (C) 2013 Oracle, Inc. |
| 7 | * |
| 8 | * This program is free software: you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation, either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 20 | * |
| 21 | * Authors: |
| 22 | * Jose E. Marchesi <jose.marchesi@oracle.com> |
| 23 | * Eric Saint Etienne <eric.saint.etienne@oracle.com> |
| 24 | */ |
| 25 | |
| 26 | typedef u32 uprobe_opcode_t; |
| 27 | |
| 28 | #define MAX_UINSN_BYTES 4 |
| 29 | #define UPROBE_XOL_SLOT_BYTES (MAX_UINSN_BYTES * 2) |
| 30 | |
| 31 | #define UPROBE_SWBP_INSN_SIZE 4 |
| 32 | #define UPROBE_SWBP_INSN 0x91d02073 /* ta 0x73 */ |
| 33 | #define UPROBE_STP_INSN 0x91d02074 /* ta 0x74 */ |
| 34 | |
| 35 | #define ANNUL_BIT (1 << 29) |
| 36 | |
| 37 | struct arch_uprobe { |
| 38 | union { |
| 39 | u8 insn[MAX_UINSN_BYTES]; |
| 40 | u32 ixol; |
| 41 | }; |
| 42 | }; |
| 43 | |
| 44 | struct arch_uprobe_task { |
| 45 | u32 saved_tpc; |
| 46 | u32 saved_tnpc; |
| 47 | }; |
| 48 | |
| 49 | struct task_struct; |
| 50 | struct notifier_block; |
| 51 | |
| 52 | extern int arch_uprobe_analyze_insn(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long addr); |
| 53 | extern int arch_uprobe_pre_xol(struct arch_uprobe *aup, struct pt_regs *regs); |
| 54 | extern int arch_uprobe_post_xol(struct arch_uprobe *aup, struct pt_regs *regs); |
| 55 | extern bool arch_uprobe_xol_was_trapped(struct task_struct *tsk); |
| 56 | extern int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val, void *data); |
| 57 | extern void arch_uprobe_abort_xol(struct arch_uprobe *aup, struct pt_regs *regs); |
| 58 | |
| 59 | #endif /* _ASM_UPROBES_H */ |