1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
4  */
5 
6 #ifndef _ARC_KPROBES_H
7 #define _ARC_KPROBES_H
8 
9 #include <asm-generic/kprobes.h>
10 
11 #ifdef CONFIG_KPROBES
12 
13 typedef u16 kprobe_opcode_t;
14 
15 #define UNIMP_S_INSTRUCTION 0x79e0
16 #define TRAP_S_2_INSTRUCTION 0x785e
17 
18 #define MAX_INSN_SIZE   8
19 #define MAX_STACK_SIZE  64
20 
21 struct arch_specific_insn {
22 	int is_short;
23 	kprobe_opcode_t *t1_addr, *t2_addr;
24 	kprobe_opcode_t t1_opcode, t2_opcode;
25 };
26 
27 #define flush_insn_slot(p)  do {  } while (0)
28 
29 #define kretprobe_blacklist_size    0
30 
31 struct kprobe;
32 
33 void arch_remove_kprobe(struct kprobe *p);
34 
35 int kprobe_exceptions_notify(struct notifier_block *self,
36 			     unsigned long val, void *data);
37 
38 struct prev_kprobe {
39 	struct kprobe *kp;
40 	unsigned long status;
41 };
42 
43 struct kprobe_ctlblk {
44 	unsigned int kprobe_status;
45 	struct prev_kprobe prev_kprobe;
46 };
47 
48 int kprobe_fault_handler(struct pt_regs *regs, unsigned long cause);
49 void __kretprobe_trampoline(void);
50 void trap_is_kprobe(unsigned long address, struct pt_regs *regs);
51 #else
52 #define trap_is_kprobe(address, regs)
53 #endif /* CONFIG_KPROBES */
54 
55 #endif /* _ARC_KPROBES_H */
56