4 * User-space Probes (UProbes) for x86
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.
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.
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.
20 * Copyright (C) IBM Corporation, 2008-2011
26 #include <linux/notifier.h>
28 typedef u8 uprobe_opcode_t;
30 #define MAX_UINSN_BYTES 16
31 #define UPROBE_XOL_SLOT_BYTES 128 /* to keep it cache aligned */
33 #define UPROBE_SWBP_INSN 0xcc
34 #define UPROBE_SWBP_INSN_SIZE 1
38 u8 insn[MAX_UINSN_BYTES];
40 unsigned long rip_rela_target_address;
44 struct arch_uprobe_task {
45 unsigned long saved_trap_nr;
47 unsigned long saved_scratch_register;
51 extern int arch_uprobe_analyze_insn(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long addr);
52 extern int arch_uprobe_pre_xol(struct arch_uprobe *aup, struct pt_regs *regs);
53 extern int arch_uprobe_post_xol(struct arch_uprobe *aup, struct pt_regs *regs);
54 extern bool arch_uprobe_xol_was_trapped(struct task_struct *tsk);
55 extern int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val, void *data);
56 extern void arch_uprobe_abort_xol(struct arch_uprobe *aup, struct pt_regs *regs);
57 #endif /* _ASM_UPROBES_H */