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gerrit-public.fairphone.software / kernel / msm-4.9 / 0326f5a94ddea33fa331b2519f4172f4fb387baa / . / arch / x86 / include / asm / uprobes.h
blob: 1e9bed14f7aecd9bfe6bf7ad2df2f8772cd5d5f2 [file] [log] [blame]
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]1#ifndef _ASM_UPROBES_H
2#define _ASM_UPROBES_H
3/*
Ingo Molnar7b2d81d2012-02-17 09:27:41 +0100[diff] [blame]4 * User-space Probes (UProbes) for x86
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]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
Srikar Dronamraju0326f5a2012-03-13 23:30:11 +0530[diff] [blame^]26#include <linux/notifier.h>
27
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]28typedef u8 uprobe_opcode_t;
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]29
Ingo Molnar7b2d81d2012-02-17 09:27:41 +0100[diff] [blame]30#define MAX_UINSN_BYTES 16
Srikar Dronamraju900771a2012-03-12 14:55:14 +0530[diff] [blame]31#define UPROBE_XOL_SLOT_BYTES 128 /* to keep it cache aligned */
Ingo Molnar7b2d81d2012-02-17 09:27:41 +0100[diff] [blame]32
Srikar Dronamraju5cb4ac32012-03-12 14:55:45 +0530[diff] [blame]33#define UPROBE_SWBP_INSN 0xcc
34#define UPROBE_SWBP_INSN_SIZE 1
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]35
Srikar Dronamraju3ff54ef2012-02-22 14:46:02 +0530[diff] [blame]36struct arch_uprobe {
Ingo Molnar7b2d81d2012-02-17 09:27:41 +0100[diff] [blame]37 u16 fixups;
Srikar Dronamraju3ff54ef2012-02-22 14:46:02 +0530[diff] [blame]38 u8 insn[MAX_UINSN_BYTES];
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]39#ifdef CONFIG_X86_64
Ingo Molnar7b2d81d2012-02-17 09:27:41 +0100[diff] [blame]40 unsigned long rip_rela_target_address;
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]41#endif
42};
43
Srikar Dronamraju0326f5a2012-03-13 23:30:11 +0530[diff] [blame^]44struct arch_uprobe_task {
45 unsigned long saved_trap_nr;
46#ifdef CONFIG_X86_64
47 unsigned long saved_scratch_register;
48#endif
49};
50
51extern int arch_uprobe_analyze_insn(struct arch_uprobe *aup, struct mm_struct *mm);
52extern int arch_uprobe_pre_xol(struct arch_uprobe *aup, struct pt_regs *regs);
53extern int arch_uprobe_post_xol(struct arch_uprobe *aup, struct pt_regs *regs);
54extern bool arch_uprobe_xol_was_trapped(struct task_struct *tsk);
55extern int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val, void *data);
56extern void arch_uprobe_abort_xol(struct arch_uprobe *aup, struct pt_regs *regs);
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]57#endif /* _ASM_UPROBES_H */