[linux-2.6-block.git] / arch / x86 / include / asm / uprobes.h

#ifndef _ASM_UPROBES_H
#define _ASM_UPROBES_H
/*
 * User-space Probes (UProbes) for x86
 *
 * 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, 2008-2011
 * Authors:
 *	Srikar Dronamraju
 *	Jim Keniston
 */

#include <linux/notifier.h>

typedef u8 uprobe_opcode_t;

#define MAX_UINSN_BYTES			  16
#define UPROBE_XOL_SLOT_BYTES		 128	/* to keep it cache aligned */

#define UPROBE_SWBP_INSN		0xcc
#define UPROBE_SWBP_INSN_SIZE		   1

struct uprobe_xol_ops;

struct arch_uprobe {
	union {
		u8			insn[MAX_UINSN_BYTES];
		u8			ixol[MAX_UINSN_BYTES];
	};

	const struct uprobe_xol_ops	*ops;

	union {
		struct {
			s32	offs;
			u8	ilen;
			u8	opc1;
		}			branch;
		struct {
			u8	fixups;
			u8	ilen;
		} 			defparam;
	};
};

struct arch_uprobe_task {
#ifdef CONFIG_X86_64
	unsigned long			saved_scratch_register;
#endif
	unsigned int			saved_trap_nr;
	unsigned int			saved_tf;
};

#endif	/* _ASM_UPROBES_H */
Commit	Line	Data
2b144498 SD	1	#ifndef _ASM_UPROBES_H
	2	#define _ASM_UPROBES_H
	3	/*
7b2d81d4	4	* User-space Probes (UProbes) for x86
2b144498 SD	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	19	*
	20	* Copyright (C) IBM Corporation, 2008-2011
	21	* Authors:
	22	* Srikar Dronamraju
	23	* Jim Keniston
	24	*/
	25
0326f5a9 SD	26	#include <linux/notifier.h>
0326f5a9 SD	27
2b144498	28	typedef u8 uprobe_opcode_t;
2b144498	29
7b2d81d4	30	#define MAX_UINSN_BYTES 16
900771a4	31	#define UPROBE_XOL_SLOT_BYTES 128 /* to keep it cache aligned */
7b2d81d4	32
5cb4ac3a SD	33	#define UPROBE_SWBP_INSN 0xcc
5cb4ac3a SD	34	#define UPROBE_SWBP_INSN_SIZE 1
2b144498	35
8ad8e9d3 ON	36	struct uprobe_xol_ops;
8ad8e9d3 ON	37
3ff54efd	38	struct arch_uprobe {
8a8de66c ON	39	union {
	40	u8 insn[MAX_UINSN_BYTES];
	41	u8 ixol[MAX_UINSN_BYTES];
	42	};
8ad8e9d3	43
8ad8e9d3 ON	44	const struct uprobe_xol_ops *ops;
8ad8e9d3 ON	45
7ba6db2d	46	union {
7ba6db2d ON	47	struct {
	48	s32 offs;
	49	u8 ilen;
8e89c0be	50	u8 opc1;
97aa5cdd ON	51	} branch;
97aa5cdd ON	52	struct {
78d9af4c	53	u8 fixups;
1dc76e6e	54	u8 ilen;
5cdb76d6	55	} defparam;
7ba6db2d	56	};
2b144498 SD	57	};
2b144498 SD	58
0326f5a9	59	struct arch_uprobe_task {
0326f5a9 SD	60	#ifdef CONFIG_X86_64
	61	unsigned long saved_scratch_register;
	62	#endif
baedbf02	63	unsigned int saved_trap_nr;
3a4664aa	64	unsigned int saved_tf;
0326f5a9 SD	65	};
0326f5a9 SD	66
2b144498	67	#endif /* _ASM_UPROBES_H */