5 * Dynamic Binary Instrumentation Module based on KProbes
6 * modules/kprobe/dbi_uprobes.h
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.
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.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 * Copyright (C) Samsung Electronics, 2006-2010
24 * 2008-2009 Alexey Gerenkov <a.gerenkov@samsung.com> User-Space
25 * Probes initial implementation; Support x86/ARM/MIPS for both user and kernel spaces.
26 * 2010 Ekaterina Gorelkina <e.gorelkina@samsung.com>: redesign module for separating core and arch parts
30 #include "dbi_kprobes.h"
34 struct task_struct *task;
35 struct slot_manager *sm;
38 typedef unsigned long (*uprobe_pre_entry_handler_t)(void *priv_arg, struct pt_regs * regs);
42 /* probe handling code to jump to */
44 // handler whichw willb bec called before 'entry'
45 uprobe_pre_entry_handler_t pre_entry;
49 struct uretprobe_instance;
51 typedef int (*uretprobe_handler_t)(struct uretprobe_instance *, struct pt_regs *, void *);
54 * Function-return probe -
56 * User needs to provide a handler function, and initialize maxactive.
57 * maxactive - The maximum number of instances of the probed function that
58 * can be active concurrently.
59 * nmissed - tracks the number of times the probed function's return was
60 * ignored, due to maxactive being too low.
65 uretprobe_handler_t handler;
69 struct hlist_head free_instances;
70 struct hlist_head used_instances;
73 struct uretprobe_instance {
74 /* either on free list or used list */
75 struct hlist_node uflist;
76 struct hlist_node hlist;
78 kprobe_opcode_t *ret_addr;
80 struct task_struct *task;
83 int dbi_register_uprobe(struct uprobe *p, int atomic);
84 void dbi_unregister_uprobe(struct uprobe *p, int atomic);
86 int dbi_register_ujprobe(struct ujprobe *jp, int atomic);
87 void dbi_unregister_ujprobe(struct ujprobe *jp, int atomic);
89 int dbi_register_uretprobe(struct uretprobe *rp, int atomic);
90 void dbi_unregister_uretprobe(struct uretprobe *rp, int atomic);
92 void dbi_unregister_all_uprobes(struct task_struct *task, int atomic);
94 void dbi_uprobe_return(void);
95 struct kprobe *get_ukprobe(void *addr, pid_t tgid);
96 struct kprobe *get_ukprobe_by_insn_slot(void *addr, pid_t tgid, struct pt_regs *regs);
98 static inline struct uprobe *kp2up(struct kprobe *p)
100 return container_of(p, struct uprobe, kp);
103 static inline struct kprobe *up2kp(struct uprobe *p)
108 void disarm_uprobe(struct uprobe *p);
110 int trampoline_uprobe_handler(struct kprobe *p, struct pt_regs *regs);
112 #endif /* _DBI_UPROBES_H */