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192.168.1.100 / T108 / e958203796650e3959a43708d67534bf36f4c83b / . / marvell / linux / arch / ia64 / include / asm / kprobes.h
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b.liue9582032025-04-17 19:18:16 +0800[diff] [blame^]1/* SPDX-License-Identifier: GPL-2.0-or-later */
2#ifndef _ASM_KPROBES_H
3#define _ASM_KPROBES_H
4/*
5 * Kernel Probes (KProbes)
6 *
7 * Copyright (C) IBM Corporation, 2002, 2004
8 * Copyright (C) Intel Corporation, 2005
9 *
10 * 2005-Apr Rusty Lynch <rusty.lynch@intel.com> and Anil S Keshavamurthy
11 * <anil.s.keshavamurthy@intel.com> adapted from i386
12 */
13#include <asm-generic/kprobes.h>
14#include <asm/break.h>
15
16#define BREAK_INST (long)(__IA64_BREAK_KPROBE << 6)
17
18#ifdef CONFIG_KPROBES
19
20#include <linux/types.h>
21#include <linux/ptrace.h>
22#include <linux/percpu.h>
23
24#define __ARCH_WANT_KPROBES_INSN_SLOT
25#define MAX_INSN_SIZE 2 /* last half is for kprobe-booster */
26#define NOP_M_INST (long)(1<<27)
27#define BRL_INST(i1, i2) ((long)((0xcL << 37) | /* brl */ \
28 (0x1L << 12) | /* many */ \
29 (((i1) & 1) << 36) | ((i2) << 13))) /* imm */
30
31typedef union cmp_inst {
32 struct {
33 unsigned long long qp : 6;
34 unsigned long long p1 : 6;
35 unsigned long long c : 1;
36 unsigned long long r2 : 7;
37 unsigned long long r3 : 7;
38 unsigned long long p2 : 6;
39 unsigned long long ta : 1;
40 unsigned long long x2 : 2;
41 unsigned long long tb : 1;
42 unsigned long long opcode : 4;
43 unsigned long long reserved : 23;
44 }f;
45 unsigned long long l;
46} cmp_inst_t;
47
48struct kprobe;
49
50typedef struct _bundle {
51 struct {
52 unsigned long long template : 5;
53 unsigned long long slot0 : 41;
54 unsigned long long slot1_p0 : 64-46;
55 } quad0;
56 struct {
57 unsigned long long slot1_p1 : 41 - (64-46);
58 unsigned long long slot2 : 41;
59 } quad1;
60} __attribute__((__aligned__(16))) bundle_t;
61
62struct prev_kprobe {
63 struct kprobe *kp;
64 unsigned long status;
65};
66
67#define MAX_PARAM_RSE_SIZE (0x60+0x60/0x3f)
68/* per-cpu kprobe control block */
69#define ARCH_PREV_KPROBE_SZ 2
70struct kprobe_ctlblk {
71 unsigned long kprobe_status;
72 unsigned long *bsp;
73 unsigned long cfm;
74 atomic_t prev_kprobe_index;
75 struct prev_kprobe prev_kprobe[ARCH_PREV_KPROBE_SZ];
76};
77
78#define kretprobe_blacklist_size 0
79
80#define SLOT0_OPCODE_SHIFT (37)
81#define SLOT1_p1_OPCODE_SHIFT (37 - (64-46))
82#define SLOT2_OPCODE_SHIFT (37)
83
84#define INDIRECT_CALL_OPCODE (1)
85#define IP_RELATIVE_CALL_OPCODE (5)
86#define IP_RELATIVE_BRANCH_OPCODE (4)
87#define IP_RELATIVE_PREDICT_OPCODE (7)
88#define LONG_BRANCH_OPCODE (0xC)
89#define LONG_CALL_OPCODE (0xD)
90#define flush_insn_slot(p) do { } while (0)
91
92typedef struct kprobe_opcode {
93 bundle_t bundle;
94} kprobe_opcode_t;
95
96/* Architecture specific copy of original instruction*/
97struct arch_specific_insn {
98 /* copy of the instruction to be emulated */
99 kprobe_opcode_t *insn;
100 #define INST_FLAG_FIX_RELATIVE_IP_ADDR 1
101 #define INST_FLAG_FIX_BRANCH_REG 2
102 #define INST_FLAG_BREAK_INST 4
103 #define INST_FLAG_BOOSTABLE 8
104 unsigned long inst_flag;
105 unsigned short target_br_reg;
106 unsigned short slot;
107};
108
109extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
110extern int kprobe_exceptions_notify(struct notifier_block *self,
111 unsigned long val, void *data);
112
113extern void invalidate_stacked_regs(void);
114extern void flush_register_stack(void);
115extern void arch_remove_kprobe(struct kprobe *p);
116
117#endif /* CONFIG_KPROBES */
118#endif /* _ASM_KPROBES_H */