| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | #ifndef _ASM_UPROBES_H |
| 2 | #define _ASM_UPROBES_H |
| 3 | /* |
| 4 | * User-space Probes (UProbes) for x86 |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | * |
| 20 | * Copyright (C) IBM Corporation, 2008-2011 |
| 21 | * Authors: |
| 22 | * Srikar Dronamraju |
| 23 | * Jim Keniston |
| 24 | */ |
| 25 | |
| 26 | #include <linux/notifier.h> |
| 27 | |
| 28 | typedef u8 uprobe_opcode_t; |
| 29 | |
| 30 | #define MAX_UINSN_BYTES 16 |
| 31 | #define UPROBE_XOL_SLOT_BYTES 128 /* to keep it cache aligned */ |
| 32 | |
| 33 | #define UPROBE_SWBP_INSN 0xcc |
| 34 | #define UPROBE_SWBP_INSN_SIZE 1 |
| 35 | |
| 36 | struct uprobe_xol_ops; |
| 37 | |
| 38 | struct arch_uprobe { |
| 39 | union { |
| 40 | u8 insn[MAX_UINSN_BYTES]; |
| 41 | u8 ixol[MAX_UINSN_BYTES]; |
| 42 | }; |
| 43 | |
| 44 | const struct uprobe_xol_ops *ops; |
| 45 | |
| 46 | union { |
| 47 | struct { |
| 48 | s32 offs; |
| 49 | u8 ilen; |
| 50 | u8 opc1; |
| 51 | } branch; |
| 52 | struct { |
| 53 | u8 fixups; |
| 54 | u8 ilen; |
| 55 | } defparam; |
| 56 | struct { |
| 57 | u8 reg_offset; /* to the start of pt_regs */ |
| 58 | u8 ilen; |
| 59 | } push; |
| 60 | }; |
| 61 | }; |
| 62 | |
| 63 | struct arch_uprobe_task { |
| 64 | #ifdef CONFIG_X86_64 |
| 65 | unsigned long saved_scratch_register; |
| 66 | #endif |
| 67 | unsigned int saved_trap_nr; |
| 68 | unsigned int saved_tf; |
| 69 | }; |
| 70 | |
| 71 | #endif /* _ASM_UPROBES_H */ |