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fd7b231f AK |
1 | #ifndef _ASM_KPROBES_H |
2 | #define _ASM_KPROBES_H | |
3 | /* | |
4 | * Kernel Probes (KProbes) | |
5 | * include/asm-ia64/kprobes.h | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
20 | * | |
21 | * Copyright (C) IBM Corporation, 2002, 2004 | |
22 | * Copyright (C) Intel Corporation, 2005 | |
23 | * | |
24 | * 2005-Apr Rusty Lynch <rusty.lynch@intel.com> and Anil S Keshavamurthy | |
25 | * <anil.s.keshavamurthy@intel.com> adapted from i386 | |
26 | */ | |
27 | #include <linux/types.h> | |
28 | #include <linux/ptrace.h> | |
8a5c4dc5 | 29 | #include <linux/percpu.h> |
fd7b231f AK |
30 | #include <asm/break.h> |
31 | ||
9ec4b1f3 | 32 | #define MAX_INSN_SIZE 16 |
fd7b231f AK |
33 | #define BREAK_INST (long)(__IA64_BREAK_KPROBE << 6) |
34 | ||
1674eafc AK |
35 | typedef union cmp_inst { |
36 | struct { | |
37 | unsigned long long qp : 6; | |
38 | unsigned long long p1 : 6; | |
39 | unsigned long long c : 1; | |
40 | unsigned long long r2 : 7; | |
41 | unsigned long long r3 : 7; | |
42 | unsigned long long p2 : 6; | |
43 | unsigned long long ta : 1; | |
44 | unsigned long long x2 : 2; | |
45 | unsigned long long tb : 1; | |
46 | unsigned long long opcode : 4; | |
47 | unsigned long long reserved : 23; | |
48 | }f; | |
49 | unsigned long long l; | |
50 | } cmp_inst_t; | |
51 | ||
8bc76772 RL |
52 | struct kprobe; |
53 | ||
fd7b231f AK |
54 | typedef struct _bundle { |
55 | struct { | |
56 | unsigned long long template : 5; | |
57 | unsigned long long slot0 : 41; | |
58 | unsigned long long slot1_p0 : 64-46; | |
59 | } quad0; | |
60 | struct { | |
61 | unsigned long long slot1_p1 : 41 - (64-46); | |
62 | unsigned long long slot2 : 41; | |
63 | } quad1; | |
64 | } __attribute__((__aligned__(16))) bundle_t; | |
65 | ||
8a5c4dc5 AM |
66 | struct prev_kprobe { |
67 | struct kprobe *kp; | |
68 | unsigned long status; | |
69 | }; | |
70 | ||
d3ef1f5a | 71 | #define MAX_PARAM_RSE_SIZE (0x60+0x60/0x3f) |
8a5c4dc5 AM |
72 | /* per-cpu kprobe control block */ |
73 | struct kprobe_ctlblk { | |
74 | unsigned long kprobe_status; | |
75 | struct pt_regs jprobe_saved_regs; | |
d3ef1f5a ZY |
76 | unsigned long jprobes_saved_stacked_regs[MAX_PARAM_RSE_SIZE]; |
77 | unsigned long *bsp; | |
78 | unsigned long cfm; | |
8a5c4dc5 AM |
79 | struct prev_kprobe prev_kprobe; |
80 | }; | |
81 | ||
fd7b231f AK |
82 | #define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry |
83 | ||
9508dbfe | 84 | #define ARCH_SUPPORTS_KRETPROBES |
e6f47f97 | 85 | #define ARCH_INACTIVE_KPROBE_COUNT 1 |
9508dbfe | 86 | |
cd2675bf AK |
87 | #define SLOT0_OPCODE_SHIFT (37) |
88 | #define SLOT1_p1_OPCODE_SHIFT (37 - (64-46)) | |
89 | #define SLOT2_OPCODE_SHIFT (37) | |
90 | ||
91 | #define INDIRECT_CALL_OPCODE (1) | |
92 | #define IP_RELATIVE_CALL_OPCODE (5) | |
93 | #define IP_RELATIVE_BRANCH_OPCODE (4) | |
94 | #define IP_RELATIVE_PREDICT_OPCODE (7) | |
95 | #define LONG_BRANCH_OPCODE (0xC) | |
96 | #define LONG_CALL_OPCODE (0xD) | |
0498b635 | 97 | #define arch_remove_kprobe(p) do {} while (0) |
cd2675bf | 98 | |
fd7b231f AK |
99 | typedef struct kprobe_opcode { |
100 | bundle_t bundle; | |
101 | } kprobe_opcode_t; | |
102 | ||
103 | struct fnptr { | |
104 | unsigned long ip; | |
105 | unsigned long gp; | |
106 | }; | |
107 | ||
108 | /* Architecture specific copy of original instruction*/ | |
109 | struct arch_specific_insn { | |
cd2675bf | 110 | /* copy of the instruction to be emulated */ |
fd7b231f | 111 | kprobe_opcode_t insn; |
cd2675bf AK |
112 | #define INST_FLAG_FIX_RELATIVE_IP_ADDR 1 |
113 | #define INST_FLAG_FIX_BRANCH_REG 2 | |
deac66ae | 114 | #define INST_FLAG_BREAK_INST 4 |
cd2675bf AK |
115 | unsigned long inst_flag; |
116 | unsigned short target_br_reg; | |
fd7b231f AK |
117 | }; |
118 | ||
fd7b231f AK |
119 | extern int kprobe_exceptions_notify(struct notifier_block *self, |
120 | unsigned long val, void *data); | |
9508dbfe RL |
121 | |
122 | /* ia64 does not need this */ | |
123 | static inline void jprobe_return(void) | |
124 | { | |
125 | } | |
d3ef1f5a ZY |
126 | extern void invalidate_stacked_regs(void); |
127 | extern void flush_register_stack(void); | |
a9ad965e | 128 | extern void flush_insn_slot(struct kprobe *p); |
9508dbfe | 129 | |
fd7b231f | 130 | #endif /* _ASM_KPROBES_H */ |