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[linux.git] / arch / sh / include / asm / kprobes.h
1 #ifndef __ASM_SH_KPROBES_H
2 #define __ASM_SH_KPROBES_H
3
4 #include <asm-generic/kprobes.h>
5
6 #define BREAKPOINT_INSTRUCTION  0xc33a
7
8 #ifdef CONFIG_KPROBES
9
10 #include <linux/types.h>
11 #include <linux/ptrace.h>
12
13 typedef insn_size_t kprobe_opcode_t;
14
15 #define MAX_INSN_SIZE 16
16 #define MAX_STACK_SIZE 64
17 #define MIN_STACK_SIZE(ADDR) (((MAX_STACK_SIZE) < \
18         (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) \
19         ? (MAX_STACK_SIZE) \
20         : (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR)))
21
22 #define flush_insn_slot(p)              do { } while (0)
23 #define kretprobe_blacklist_size        0
24
25 struct kprobe;
26
27 void arch_remove_kprobe(struct kprobe *);
28 void kretprobe_trampoline(void);
29 void jprobe_return_end(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         unsigned long jprobe_saved_r15;
46         struct pt_regs jprobe_saved_regs;
47         kprobe_opcode_t jprobes_stack[MAX_STACK_SIZE];
48         struct prev_kprobe prev_kprobe;
49 };
50
51 extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
52 extern int kprobe_exceptions_notify(struct notifier_block *self,
53                                     unsigned long val, void *data);
54 extern int kprobe_handle_illslot(unsigned long pc);
55 #else
56
57 #define kprobe_handle_illslot(pc)       (-1)
58
59 #endif /* CONFIG_KPROBES */
60 #endif /* __ASM_SH_KPROBES_H */
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