1#ifndef _ASM_KPROBES_H
2#define _ASM_KPROBES_H
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26#include <asm-generic/kprobes.h>
27#include <asm/break.h>
28
29#define BREAK_INST (long)(__IA64_BREAK_KPROBE << 6)
30
31#ifdef CONFIG_KPROBES
32
33#include <linux/types.h>
34#include <linux/ptrace.h>
35#include <linux/percpu.h>
36
37#define __ARCH_WANT_KPROBES_INSN_SLOT
38#define MAX_INSN_SIZE 2
39#define NOP_M_INST (long)(1<<27)
40#define BRL_INST(i1, i2) ((long)((0xcL << 37) | \
41 (0x1L << 12) | \
42 (((i1) & 1) << 36) | ((i2) << 13)))
43
44typedef union cmp_inst {
45 struct {
46 unsigned long long qp : 6;
47 unsigned long long p1 : 6;
48 unsigned long long c : 1;
49 unsigned long long r2 : 7;
50 unsigned long long r3 : 7;
51 unsigned long long p2 : 6;
52 unsigned long long ta : 1;
53 unsigned long long x2 : 2;
54 unsigned long long tb : 1;
55 unsigned long long opcode : 4;
56 unsigned long long reserved : 23;
57 }f;
58 unsigned long long l;
59} cmp_inst_t;
60
61struct kprobe;
62
63typedef struct _bundle {
64 struct {
65 unsigned long long template : 5;
66 unsigned long long slot0 : 41;
67 unsigned long long slot1_p0 : 64-46;
68 } quad0;
69 struct {
70 unsigned long long slot1_p1 : 41 - (64-46);
71 unsigned long long slot2 : 41;
72 } quad1;
73} __attribute__((__aligned__(16))) bundle_t;
74
75struct prev_kprobe {
76 struct kprobe *kp;
77 unsigned long status;
78};
79
80#define MAX_PARAM_RSE_SIZE (0x60+0x60/0x3f)
81
82#define ARCH_PREV_KPROBE_SZ 2
83struct kprobe_ctlblk {
84 unsigned long kprobe_status;
85 unsigned long *bsp;
86 unsigned long cfm;
87 atomic_t prev_kprobe_index;
88 struct prev_kprobe prev_kprobe[ARCH_PREV_KPROBE_SZ];
89};
90
91#define kretprobe_blacklist_size 0
92
93#define SLOT0_OPCODE_SHIFT (37)
94#define SLOT1_p1_OPCODE_SHIFT (37 - (64-46))
95#define SLOT2_OPCODE_SHIFT (37)
96
97#define INDIRECT_CALL_OPCODE (1)
98#define IP_RELATIVE_CALL_OPCODE (5)
99#define IP_RELATIVE_BRANCH_OPCODE (4)
100#define IP_RELATIVE_PREDICT_OPCODE (7)
101#define LONG_BRANCH_OPCODE (0xC)
102#define LONG_CALL_OPCODE (0xD)
103#define flush_insn_slot(p) do { } while (0)
104
105typedef struct kprobe_opcode {
106 bundle_t bundle;
107} kprobe_opcode_t;
108
109
110struct arch_specific_insn {
111
112 kprobe_opcode_t *insn;
113 #define INST_FLAG_FIX_RELATIVE_IP_ADDR 1
114 #define INST_FLAG_FIX_BRANCH_REG 2
115 #define INST_FLAG_BREAK_INST 4
116 #define INST_FLAG_BOOSTABLE 8
117 unsigned long inst_flag;
118 unsigned short target_br_reg;
119 unsigned short slot;
120};
121
122extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
123extern int kprobe_exceptions_notify(struct notifier_block *self,
124 unsigned long val, void *data);
125
126extern void invalidate_stacked_regs(void);
127extern void flush_register_stack(void);
128extern void arch_remove_kprobe(struct kprobe *p);
129
130#endif
131#endif
132