1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * arch/parisc/include/asm/kprobes.h
4 *
5 * PA-RISC kprobes implementation
6 *
7 * Copyright (c) 2019 Sven Schnelle <svens@stackframe.org>
8 */
9
10 #ifndef _PARISC_KPROBES_H
11 #define _PARISC_KPROBES_H
12
13 #include <asm-generic/kprobes.h>
14
15 #ifdef CONFIG_KPROBES
16
17 #include <linux/types.h>
18 #include <linux/ptrace.h>
19 #include <linux/notifier.h>
20
21 #define PARISC_KPROBES_BREAK_INSN 0x3ff801f
22 #define PARISC_KPROBES_BREAK_INSN2 0x3ff801e
23 #define __ARCH_WANT_KPROBES_INSN_SLOT
24 #define MAX_INSN_SIZE 2
25
26 typedef u32 kprobe_opcode_t;
27 struct kprobe;
28
29 void arch_remove_kprobe(struct kprobe *p);
30
31 #define flush_insn_slot(p) \
32 flush_icache_range((unsigned long)&(p)->ainsn.insn[0], \
33 (unsigned long)&(p)->ainsn.insn[0] + \
34 MAX_INSN_SIZE*sizeof(kprobe_opcode_t))
35
36 #define kretprobe_blacklist_size 0
37
38 struct arch_specific_insn {
39 kprobe_opcode_t *insn;
40 };
41
42 struct prev_kprobe {
43 struct kprobe *kp;
44 unsigned long status;
45 };
46
47 struct kprobe_ctlblk {
48 unsigned int kprobe_status;
49 struct prev_kprobe prev_kprobe;
50 unsigned long iaoq[2];
51 };
52
53 int __kprobes parisc_kprobe_break_handler(struct pt_regs *regs);
54 int __kprobes parisc_kprobe_ss_handler(struct pt_regs *regs);
55 static inline int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
56 {
57 return 0;
58 }
59
60 #endif /* CONFIG_KPROBES */
61 #endif /* _PARISC_KPROBES_H */
62
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