[mirror_ubuntu-zesty-kernel.git] / include / asm-ia64 / kprobes.h

#ifndef _ASM_KPROBES_H
#define _ASM_KPROBES_H
/*
 *  Kernel Probes (KProbes)
 *  include/asm-ia64/kprobes.h
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 * Copyright (C) IBM Corporation, 2002, 2004
 * Copyright (C) Intel Corporation, 2005
 *
 * 2005-Apr     Rusty Lynch <rusty.lynch@intel.com> and Anil S Keshavamurthy
 *              <anil.s.keshavamurthy@intel.com> adapted from i386
 */
#include <linux/types.h>
#include <linux/ptrace.h>
#include <asm/break.h>

#define MAX_INSN_SIZE   16
#define BREAK_INST	(long)(__IA64_BREAK_KPROBE << 6)

typedef union cmp_inst {
	struct {
	unsigned long long qp : 6;
	unsigned long long p1 : 6;
	unsigned long long c  : 1;
	unsigned long long r2 : 7;
	unsigned long long r3 : 7;
	unsigned long long p2 : 6;
	unsigned long long ta : 1;
	unsigned long long x2 : 2;
	unsigned long long tb : 1;
	unsigned long long opcode : 4;
	unsigned long long reserved : 23;
	}f;
	unsigned long long l;
} cmp_inst_t;

struct kprobe;

typedef struct _bundle {
	struct {
		unsigned long long template : 5;
		unsigned long long slot0 : 41;
		unsigned long long slot1_p0 : 64-46;
	} quad0;
	struct {
		unsigned long long slot1_p1 : 41 - (64-46);
		unsigned long long slot2 : 41;
	} quad1;
} __attribute__((__aligned__(16)))  bundle_t;

#define JPROBE_ENTRY(pentry)	(kprobe_opcode_t *)pentry

#define ARCH_SUPPORTS_KRETPROBES

#define SLOT0_OPCODE_SHIFT	(37)
#define SLOT1_p1_OPCODE_SHIFT	(37 - (64-46))
#define SLOT2_OPCODE_SHIFT 	(37)

#define INDIRECT_CALL_OPCODE		(1)
#define IP_RELATIVE_CALL_OPCODE		(5)
#define IP_RELATIVE_BRANCH_OPCODE	(4)
#define IP_RELATIVE_PREDICT_OPCODE	(7)
#define LONG_BRANCH_OPCODE		(0xC)
#define LONG_CALL_OPCODE		(0xD)

typedef struct kprobe_opcode {
	bundle_t bundle;
} kprobe_opcode_t;

struct fnptr {
	unsigned long ip;
	unsigned long gp;
};

/* Architecture specific copy of original instruction*/
struct arch_specific_insn {
	/* copy of the instruction to be emulated */
	kprobe_opcode_t insn;
 #define INST_FLAG_FIX_RELATIVE_IP_ADDR		1
 #define INST_FLAG_FIX_BRANCH_REG		2
 #define INST_FLAG_BREAK_INST			4
 	unsigned long inst_flag;
 	unsigned short target_br_reg;
};

/* ia64 does not need this */
static inline void arch_copy_kprobe(struct kprobe *p)
{
}

#ifdef CONFIG_KPROBES
extern int kprobe_exceptions_notify(struct notifier_block *self,
				    unsigned long val, void *data);

/* ia64 does not need this */
static inline void jprobe_return(void)
{
}

#else				/* !CONFIG_KPROBES */
static inline int kprobe_exceptions_notify(struct notifier_block *self,
					   unsigned long val, void *data)
{
	return 0;
}
#endif
#endif				/* _ASM_KPROBES_H */
Commit	Line	Data
fd7b231f AK	1	#ifndef _ASM_KPROBES_H
	2	#define _ASM_KPROBES_H
	3	/*
	4	* Kernel Probes (KProbes)
	5	* include/asm-ia64/kprobes.h
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	20	*
	21	* Copyright (C) IBM Corporation, 2002, 2004
	22	* Copyright (C) Intel Corporation, 2005
	23	*
	24	* 2005-Apr Rusty Lynch <rusty.lynch@intel.com> and Anil S Keshavamurthy
	25	* <anil.s.keshavamurthy@intel.com> adapted from i386
	26	*/
	27	#include <linux/types.h>
	28	#include <linux/ptrace.h>
	29	#include <asm/break.h>
	30
9ec4b1f3	31	#define MAX_INSN_SIZE 16
fd7b231f AK	32	#define BREAK_INST (long)(__IA64_BREAK_KPROBE << 6)
fd7b231f AK	33
1674eafc AK	34	typedef union cmp_inst {
	35	struct {
	36	unsigned long long qp : 6;
	37	unsigned long long p1 : 6;
	38	unsigned long long c : 1;
	39	unsigned long long r2 : 7;
	40	unsigned long long r3 : 7;
	41	unsigned long long p2 : 6;
	42	unsigned long long ta : 1;
	43	unsigned long long x2 : 2;
	44	unsigned long long tb : 1;
	45	unsigned long long opcode : 4;
	46	unsigned long long reserved : 23;
	47	}f;
	48	unsigned long long l;
	49	} cmp_inst_t;
	50
8bc76772 RL	51	struct kprobe;
8bc76772 RL	52
fd7b231f AK	53	typedef struct _bundle {
	54	struct {
	55	unsigned long long template : 5;
	56	unsigned long long slot0 : 41;
	57	unsigned long long slot1_p0 : 64-46;
	58	} quad0;
	59	struct {
	60	unsigned long long slot1_p1 : 41 - (64-46);
	61	unsigned long long slot2 : 41;
	62	} quad1;
	63	} __attribute__((__aligned__(16))) bundle_t;
	64
	65	#define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry
	66
9508dbfe RL	67	#define ARCH_SUPPORTS_KRETPROBES
9508dbfe RL	68
cd2675bf AK	69	#define SLOT0_OPCODE_SHIFT (37)
	70	#define SLOT1_p1_OPCODE_SHIFT (37 - (64-46))
	71	#define SLOT2_OPCODE_SHIFT (37)
	72
	73	#define INDIRECT_CALL_OPCODE (1)
	74	#define IP_RELATIVE_CALL_OPCODE (5)
	75	#define IP_RELATIVE_BRANCH_OPCODE (4)
	76	#define IP_RELATIVE_PREDICT_OPCODE (7)
	77	#define LONG_BRANCH_OPCODE (0xC)
	78	#define LONG_CALL_OPCODE (0xD)
	79
fd7b231f AK	80	typedef struct kprobe_opcode {
	81	bundle_t bundle;
	82	} kprobe_opcode_t;
	83
	84	struct fnptr {
	85	unsigned long ip;
	86	unsigned long gp;
	87	};
	88
	89	/* Architecture specific copy of original instruction*/
	90	struct arch_specific_insn {
cd2675bf	91	/* copy of the instruction to be emulated */
fd7b231f	92	kprobe_opcode_t insn;
cd2675bf AK	93	#define INST_FLAG_FIX_RELATIVE_IP_ADDR 1
cd2675bf AK	94	#define INST_FLAG_FIX_BRANCH_REG 2
deac66ae	95	#define INST_FLAG_BREAK_INST 4
cd2675bf AK	96	unsigned long inst_flag;
cd2675bf AK	97	unsigned short target_br_reg;
fd7b231f AK	98	};
fd7b231f AK	99
8bc76772 RL	100	/* ia64 does not need this */
	101	static inline void arch_copy_kprobe(struct kprobe *p)
	102	{
	103	}
	104
fd7b231f AK	105	#ifdef CONFIG_KPROBES
	106	extern int kprobe_exceptions_notify(struct notifier_block *self,
	107	unsigned long val, void *data);
9508dbfe RL	108
	109	/* ia64 does not need this */
	110	static inline void jprobe_return(void)
	111	{
	112	}
	113
fd7b231f AK	114	#else /* !CONFIG_KPROBES */
	115	static inline int kprobe_exceptions_notify(struct notifier_block *self,
	116	unsigned long val, void *data)
	117	{
	118	return 0;
	119	}
	120	#endif
	121	#endif /* _ASM_KPROBES_H */