1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_SH_KPROBES_H
3 #define __ASM_SH_KPROBES_H
4
5 #include <asm-generic/kprobes.h>
6
7 #define BREAKPOINT_INSTRUCTION 0xc33a
8
9 #ifdef CONFIG_KPROBES
10
11 #include <linux/types.h>
12 #include <linux/ptrace.h>
13
14 typedef insn_size_t kprobe_opcode_t;
15
16 #define MAX_INSN_SIZE 16
17 #define MAX_STACK_SIZE 64
18 #define MIN_STACK_SIZE(ADDR) (((MAX_STACK_SIZE) < \
19 (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) \
20 ? (MAX_STACK_SIZE) \
21 : (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR)))
22
23 #define flush_insn_slot(p) do { } while (0)
24 #define kretprobe_blacklist_size 0
25
26 struct kprobe;
27
28 void arch_remove_kprobe(struct kprobe *);
29 void __kretprobe_trampoline(void);
30
31 /* Architecture specific copy of original instruction*/
32 struct arch_specific_insn {
33 /* copy of the original instruction */
34 kprobe_opcode_t insn[MAX_INSN_SIZE];
35 };
36
37 struct prev_kprobe {
38 struct kprobe *kp;
39 unsigned long status;
40 };
41
42 /* per-cpu kprobe control block */
43 struct kprobe_ctlblk {
44 unsigned long kprobe_status;
45 struct prev_kprobe prev_kprobe;
46 };
47
48 extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
49 extern int kprobe_handle_illslot(unsigned long pc);
50 #else
51
52 #define kprobe_handle_illslot(pc) (-1)
53
54 #endif /* CONFIG_KPROBES */
55 #endif /* __ASM_SH_KPROBES_H */
56
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