1/* SPDX-License-Identifier: GPL-2.0-only */
2#ifndef __ASM_LOONGARCH_KPROBES_H
3#define __ASM_LOONGARCH_KPROBES_H
4
5#include <asm-generic/kprobes.h>
6
7#ifdef CONFIG_KPROBES
8
9#include <asm/inst.h>
10#include <asm/cacheflush.h>
11
12#define __ARCH_WANT_KPROBES_INSN_SLOT
13#define MAX_INSN_SIZE			2
14
15#define flush_insn_slot(p)						\
16do {									\
17	if (p->addr)							\
18		flush_icache_range((unsigned long)p->addr,		\
19			   (unsigned long)p->addr +			\
20			   (MAX_INSN_SIZE * sizeof(kprobe_opcode_t)));	\
21} while (0)
22
23#define kretprobe_blacklist_size	0
24
25typedef u32 kprobe_opcode_t;
26
27/* Architecture specific copy of original instruction */
28struct arch_specific_insn {
29	/* copy of the original instruction */
30	kprobe_opcode_t *insn;
31	/* restore address after simulation */
32	unsigned long restore;
33};
34
35struct prev_kprobe {
36	struct kprobe *kp;
37	unsigned int status;
38};
39
40/* per-cpu kprobe control block */
41struct kprobe_ctlblk {
42	unsigned int kprobe_status;
43	unsigned long saved_status;
44	struct prev_kprobe prev_kprobe;
45};
46
47void arch_remove_kprobe(struct kprobe *p);
48bool kprobe_fault_handler(struct pt_regs *regs, int trapnr);
49bool kprobe_breakpoint_handler(struct pt_regs *regs);
50bool kprobe_singlestep_handler(struct pt_regs *regs);
51
52#else /* !CONFIG_KPROBES */
53
54static inline bool kprobe_breakpoint_handler(struct pt_regs *regs) { return false; }
55static inline bool kprobe_singlestep_handler(struct pt_regs *regs) { return false; }
56
57#endif /* CONFIG_KPROBES */
58#endif /* __ASM_LOONGARCH_KPROBES_H */
59