1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
#ifndef _ASM_KPROBES_H
#define _ASM_KPROBES_H
/*
* Kernel Probes (KProbes)
* include/asm-ia64/kprobes.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Copyright (C) IBM Corporation, 2002, 2004
* Copyright (C) Intel Corporation, 2005
*
* 2005-Apr Rusty Lynch <rusty.lynch@intel.com> and Anil S Keshavamurthy
* <anil.s.keshavamurthy@intel.com> adapted from i386
*/
#include <linux/types.h>
#include <linux/ptrace.h>
#include <linux/percpu.h>
#include <asm/break.h>
#define __ARCH_WANT_KPROBES_INSN_SLOT
#define MAX_INSN_SIZE 1
#define BREAK_INST (long)(__IA64_BREAK_KPROBE << 6)
typedef union cmp_inst {
struct {
unsigned long long qp : 6;
unsigned long long p1 : 6;
unsigned long long c : 1;
unsigned long long r2 : 7;
unsigned long long r3 : 7;
unsigned long long p2 : 6;
unsigned long long ta : 1;
unsigned long long x2 : 2;
unsigned long long tb : 1;
unsigned long long opcode : 4;
unsigned long long reserved : 23;
}f;
unsigned long long l;
} cmp_inst_t;
struct kprobe;
typedef struct _bundle {
struct {
unsigned long long template : 5;
unsigned long long slot0 : 41;
unsigned long long slot1_p0 : 64-46;
} quad0;
struct {
unsigned long long slot1_p1 : 41 - (64-46);
unsigned long long slot2 : 41;
} quad1;
} __attribute__((__aligned__(16))) bundle_t;
struct prev_kprobe {
struct kprobe *kp;
unsigned long status;
};
#define MAX_PARAM_RSE_SIZE (0x60+0x60/0x3f)
/* per-cpu kprobe control block */
#define ARCH_PREV_KPROBE_SZ 2
struct kprobe_ctlblk {
unsigned long kprobe_status;
struct pt_regs jprobe_saved_regs;
unsigned long jprobes_saved_stacked_regs[MAX_PARAM_RSE_SIZE];
unsigned long *bsp;
unsigned long cfm;
atomic_t prev_kprobe_index;
struct prev_kprobe prev_kprobe[ARCH_PREV_KPROBE_SZ];
};
#define kretprobe_blacklist_size 0
#define SLOT0_OPCODE_SHIFT (37)
#define SLOT1_p1_OPCODE_SHIFT (37 - (64-46))
#define SLOT2_OPCODE_SHIFT (37)
#define INDIRECT_CALL_OPCODE (1)
#define IP_RELATIVE_CALL_OPCODE (5)
#define IP_RELATIVE_BRANCH_OPCODE (4)
#define IP_RELATIVE_PREDICT_OPCODE (7)
#define LONG_BRANCH_OPCODE (0xC)
#define LONG_CALL_OPCODE (0xD)
#define flush_insn_slot(p) do { } while (0)
typedef struct kprobe_opcode {
bundle_t bundle;
} kprobe_opcode_t;
struct fnptr {
unsigned long ip;
unsigned long gp;
};
/* Architecture specific copy of original instruction*/
struct arch_specific_insn {
/* copy of the instruction to be emulated */
kprobe_opcode_t *insn;
#define INST_FLAG_FIX_RELATIVE_IP_ADDR 1
#define INST_FLAG_FIX_BRANCH_REG 2
#define INST_FLAG_BREAK_INST 4
unsigned long inst_flag;
unsigned short target_br_reg;
unsigned short slot;
};
extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
extern int kprobe_exceptions_notify(struct notifier_block *self,
unsigned long val, void *data);
extern void invalidate_stacked_regs(void);
extern void flush_register_stack(void);
extern void arch_remove_kprobe(struct kprobe *p);
#endif /* _ASM_KPROBES_H */
|
