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 }; 57 }; 58 59 struct arch_uprobe_task { 60 #ifdef CONFIG_X86_64 61 unsigned long saved_scratch_register; 62 #endif 63 unsigned int saved_trap_nr; 64 unsigned int saved_tf; 65 }; 66 67 #endif /* _ASM_UPROBES_H */ 68