[mirror_ubuntu-bionic-kernel.git] / arch / sh / include / asm / kprobes.h

#ifndef __ASM_SH_KPROBES_H
#define __ASM_SH_KPROBES_H

#ifdef CONFIG_KPROBES

#include <linux/types.h>
#include <linux/ptrace.h>

typedef insn_size_t kprobe_opcode_t;
#define BREAKPOINT_INSTRUCTION	0xc33a

#define MAX_INSN_SIZE 16
#define MAX_STACK_SIZE 64
#define MIN_STACK_SIZE(ADDR) (((MAX_STACK_SIZE) < \
	(((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) \
	? (MAX_STACK_SIZE) \
	: (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR)))

#define flush_insn_slot(p)		do { } while (0)
#define kretprobe_blacklist_size	0

struct kprobe;

void arch_remove_kprobe(struct kprobe *);
void kretprobe_trampoline(void);
void jprobe_return_end(void);

/* Architecture specific copy of original instruction*/
struct arch_specific_insn {
	/* copy of the original instruction */
	kprobe_opcode_t insn[MAX_INSN_SIZE];
};

struct prev_kprobe {
	struct kprobe *kp;
	unsigned long status;
};

/* per-cpu kprobe control block */
struct kprobe_ctlblk {
	unsigned long kprobe_status;
	unsigned long jprobe_saved_r15;
	struct pt_regs jprobe_saved_regs;
	kprobe_opcode_t jprobes_stack[MAX_STACK_SIZE];
	struct prev_kprobe prev_kprobe;
};

extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
extern int kprobe_exceptions_notify(struct notifier_block *self,
				    unsigned long val, void *data);
extern int kprobe_handle_illslot(unsigned long pc);
#else

#define kprobe_handle_illslot(pc)	(-1)

#endif /* CONFIG_KPROBES */
#endif /* __ASM_SH_KPROBES_H */
Commit	Line	Data
d39f5450 CS	1	#ifndef __ASM_SH_KPROBES_H
	2	#define __ASM_SH_KPROBES_H
	3
	4	#ifdef CONFIG_KPROBES
	5
	6	#include <linux/types.h>
	7	#include <linux/ptrace.h>
	8
2bcfffa4	9	typedef insn_size_t kprobe_opcode_t;
174b5c99	10	#define BREAKPOINT_INSTRUCTION 0xc33a
d39f5450 CS	11
	12	#define MAX_INSN_SIZE 16
	13	#define MAX_STACK_SIZE 64
	14	#define MIN_STACK_SIZE(ADDR) (((MAX_STACK_SIZE) < \
	15	(((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) \
	16	? (MAX_STACK_SIZE) \
	17	: (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR)))
	18
d39f5450 CS	19	#define flush_insn_slot(p) do { } while (0)
	20	#define kretprobe_blacklist_size 0
	21
	22	struct kprobe;
	23
	24	void arch_remove_kprobe(struct kprobe *);
	25	void kretprobe_trampoline(void);
	26	void jprobe_return_end(void);
	27
	28	/* Architecture specific copy of original instruction*/
	29	struct arch_specific_insn {
	30	/* copy of the original instruction */
	31	kprobe_opcode_t insn[MAX_INSN_SIZE];
	32	};
	33
	34	struct prev_kprobe {
	35	struct kprobe *kp;
	36	unsigned long status;
	37	};
	38
	39	/* per-cpu kprobe control block */
	40	struct kprobe_ctlblk {
	41	unsigned long kprobe_status;
	42	unsigned long jprobe_saved_r15;
	43	struct pt_regs jprobe_saved_regs;
	44	kprobe_opcode_t jprobes_stack[MAX_STACK_SIZE];
	45	struct prev_kprobe prev_kprobe;
	46	};
	47
037c10a6	48	extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
d39f5450 CS	49	extern int kprobe_exceptions_notify(struct notifier_block *self,
	50	unsigned long val, void *data);
	51	extern int kprobe_handle_illslot(unsigned long pc);
	52	#else
	53
	54	#define kprobe_handle_illslot(pc) (-1)
	55
	56	#endif /* CONFIG_KPROBES */
	57	#endif /* __ASM_SH_KPROBES_H */