change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/arch/x86/include/asm/kprobes.h
..
..
@@ -1,21 +1,8 @@
1
+/* SPDX-License-Identifier: GPL-2.0-or-later */
1
2
 #ifndef _ASM_X86_KPROBES_H
2
3
 #define _ASM_X86_KPROBES_H
3
4
 /*
4
5
  *  Kernel Probes (KProbes)
5
- *
6
- * This program is free software; you can redistribute it and/or modify
7
- * it under the terms of the GNU General Public License as published by
8
- * the Free Software Foundation; either version 2 of the License, or
9
- * (at your option) any later version.
10
- *
11
- * This program is distributed in the hope that it will be useful,
12
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14
- * GNU General Public License for more details.
15
- *
16
- * You should have received a copy of the GNU General Public License
17
- * along with this program; if not, write to the Free Software
18
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19
6
  *
20
7
  * Copyright (C) IBM Corporation, 2002, 2004
21
8
  *
..
..
@@ -24,12 +11,11 @@
24
11
 
25
12
 #include <asm-generic/kprobes.h>
26
13
 
27
-#define BREAKPOINT_INSTRUCTION	0xcc
28
-
29
14
 #ifdef CONFIG_KPROBES
30
15
 #include <linux/types.h>
31
16
 #include <linux/ptrace.h>
32
17
 #include <linux/percpu.h>
18
+#include <asm/text-patching.h>
33
19
 #include <asm/insn.h>
34
20
 
35
21
 #define  __ARCH_WANT_KPROBES_INSN_SLOT
..
..
@@ -38,10 +24,7 @@
38
24
 struct kprobe;
39
25
 
40
26
 typedef u8 kprobe_opcode_t;
41
-#define RELATIVEJUMP_OPCODE 0xe9
42
-#define RELATIVEJUMP_SIZE 5
43
-#define RELATIVECALL_OPCODE 0xe8
44
-#define RELATIVE_ADDR_SIZE 4
27
+
45
28
 #define MAX_STACK_SIZE 64
46
29
 #define CUR_STACK_SIZE(ADDR) \
47
30
 	(current_top_of_stack() - (unsigned long)(ADDR))
..
..
@@ -53,14 +36,15 @@
53
36
 
54
37
 /* optinsn template addresses */
55
38
 extern __visible kprobe_opcode_t optprobe_template_entry[];
39
+extern __visible kprobe_opcode_t optprobe_template_clac[];
56
40
 extern __visible kprobe_opcode_t optprobe_template_val[];
57
41
 extern __visible kprobe_opcode_t optprobe_template_call[];
58
42
 extern __visible kprobe_opcode_t optprobe_template_end[];
59
-#define MAX_OPTIMIZED_LENGTH (MAX_INSN_SIZE + RELATIVE_ADDR_SIZE)
43
+#define MAX_OPTIMIZED_LENGTH (MAX_INSN_SIZE + DISP32_SIZE)
60
44
 #define MAX_OPTINSN_SIZE 				\
61
45
 	(((unsigned long)optprobe_template_end -	\
62
46
 	  (unsigned long)optprobe_template_entry) +	\
63
-	 MAX_OPTIMIZED_LENGTH + RELATIVEJUMP_SIZE)
47
+	 MAX_OPTIMIZED_LENGTH + JMP32_INSN_SIZE)
64
48
 
65
49
 extern const int kretprobe_blacklist_size;
66
50
 
..
..
@@ -74,19 +58,36 @@
74
58
 	/* copy of the original instruction */
75
59
 	kprobe_opcode_t *insn;
76
60
 	/*
77
-	 * boostable = false: This instruction type is not boostable.
78
-	 * boostable = true: This instruction has been boosted: we have
61
+	 * boostable = 0: This instruction type is not boostable.
62
+	 * boostable = 1: This instruction has been boosted: we have
79
63
 	 * added a relative jump after the instruction copy in insn,
80
64
 	 * so no single-step and fixup are needed (unless there's
81
65
 	 * a post_handler).
82
66
 	 */
83
-	bool boostable;
84
-	bool if_modifier;
67
+	unsigned boostable:1;
68
+	unsigned char size;	/* The size of insn */
69
+	union {
70
+		unsigned char opcode;
71
+		struct {
72
+			unsigned char type;
73
+		} jcc;
74
+		struct {
75
+			unsigned char type;
76
+			unsigned char asize;
77
+		} loop;
78
+		struct {
79
+			unsigned char reg;
80
+		} indirect;
81
+	};
82
+	s32 rel32;	/* relative offset must be s32, s16, or s8 */
83
+	void (*emulate_op)(struct kprobe *p, struct pt_regs *regs);
84
+	/* Number of bytes of text poked */
85
+	int tp_len;
85
86
 };
86
87
 
87
88
 struct arch_optimized_insn {
88
89
 	/* copy of the original instructions */
89
-	kprobe_opcode_t copied_insn[RELATIVE_ADDR_SIZE];
90
+	kprobe_opcode_t copied_insn[DISP32_SIZE];
90
91
 	/* detour code buffer */
91
92
 	kprobe_opcode_t *insn;
92
93
 	/* the size of instructions copied to detour code buffer */
..
..
@@ -118,7 +119,10 @@
118
119
 extern int kprobe_exceptions_notify(struct notifier_block *self,
119
120
 				    unsigned long val, void *data);
120
121
 extern int kprobe_int3_handler(struct pt_regs *regs);
121
-extern int kprobe_debug_handler(struct pt_regs *regs);
122
+
123
+#else
124
+
125
+static inline int kprobe_debug_handler(struct pt_regs *regs) { return 0; }
122
126
 
123
127
 #endif /* CONFIG_KPROBES */
124
128
 #endif /* _ASM_X86_KPROBES_H */