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 struct prev_kprobe {
36 struct kprobe *kp;
37 unsigned long status;
38 };
39
40 struct kprobe_ctlblk {
41 unsigned int kprobe_status;
42 struct prev_kprobe prev_kprobe;
43 };
44
45 int kprobe_fault_handler(struct pt_regs *regs, unsigned long cause);
46 void __kretprobe_trampoline(void);
47 void trap_is_kprobe(unsigned long address, struct pt_regs *regs);
48 #else
49 #define trap_is_kprobe(address, regs)
50 #endif /* CONFIG_KPROBES */
51
52 #endif /* _ARC_KPROBES_H */
53
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