[linux-2.6-block.git] / arch / mips / include / asm / ptrace.h

/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1994, 95, 96, 97, 98, 99, 2000 by Ralf Baechle
 * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
 */
#ifndef _ASM_PTRACE_H
#define _ASM_PTRACE_H

/* 0 - 31 are integer registers, 32 - 63 are fp registers.  */
#define FPR_BASE	32
#define PC		64
#define CAUSE		65
#define BADVADDR	66
#define MMHI		67
#define MMLO		68
#define FPC_CSR		69
#define FPC_EIR		70
#define DSP_BASE	71		/* 3 more hi / lo register pairs */
#define DSP_CONTROL	77
#define ACX		78

/*
 * This struct defines the way the registers are stored on the stack during a
 * system call/exception. As usual the registers k0/k1 aren't being saved.
 */
struct pt_regs {
#ifdef CONFIG_32BIT
	/* Pad bytes for argument save space on the stack. */
	unsigned long pad0[6];
#endif

	/* Saved main processor registers. */
	unsigned long regs[32];

	/* Saved special registers. */
	unsigned long cp0_status;
	unsigned long hi;
	unsigned long lo;
#ifdef CONFIG_CPU_HAS_SMARTMIPS
	unsigned long acx;
#endif
	unsigned long cp0_badvaddr;
	unsigned long cp0_cause;
	unsigned long cp0_epc;
#ifdef CONFIG_MIPS_MT_SMTC
	unsigned long cp0_tcstatus;
#endif /* CONFIG_MIPS_MT_SMTC */
} __attribute__ ((aligned (8)));

/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
#define PTRACE_GETREGS		12
#define PTRACE_SETREGS		13
#define PTRACE_GETFPREGS		14
#define PTRACE_SETFPREGS		15
/* #define PTRACE_GETFPXREGS		18 */
/* #define PTRACE_SETFPXREGS		19 */

#define PTRACE_OLDSETOPTIONS	21

#define PTRACE_GET_THREAD_AREA	25
#define PTRACE_SET_THREAD_AREA	26

/* Calls to trace a 64bit program from a 32bit program.  */
#define PTRACE_PEEKTEXT_3264	0xc0
#define PTRACE_PEEKDATA_3264	0xc1
#define PTRACE_POKETEXT_3264	0xc2
#define PTRACE_POKEDATA_3264	0xc3
#define PTRACE_GET_THREAD_AREA_3264	0xc4

/* Read and write watchpoint registers.  */
enum pt_watch_style {
	pt_watch_style_mips32,
	pt_watch_style_mips64
};
struct mips32_watch_regs {
	unsigned int watchlo[8];
	/* Lower 16 bits of watchhi. */
	unsigned short watchhi[8];
	/* Valid mask and I R W bits.
	 * bit 0 -- 1 if W bit is usable.
	 * bit 1 -- 1 if R bit is usable.
	 * bit 2 -- 1 if I bit is usable.
	 * bits 3 - 11 -- Valid watchhi mask bits.
	 */
	unsigned short watch_masks[8];
	/* The number of valid watch register pairs.  */
	unsigned int num_valid;
} __attribute__((aligned(8)));

struct mips64_watch_regs {
	unsigned long long watchlo[8];
	unsigned short watchhi[8];
	unsigned short watch_masks[8];
	unsigned int num_valid;
} __attribute__((aligned(8)));

struct pt_watch_regs {
	enum pt_watch_style style;
	union {
		struct mips32_watch_regs mips32;
		struct mips32_watch_regs mips64;
	};
};

#define PTRACE_GET_WATCH_REGS	0xd0
#define PTRACE_SET_WATCH_REGS	0xd1

#ifdef __KERNEL__

#include <linux/compiler.h>
#include <linux/linkage.h>
#include <linux/types.h>
#include <asm/isadep.h>

struct task_struct;

extern int ptrace_getregs(struct task_struct *child, __s64 __user *data);
extern int ptrace_setregs(struct task_struct *child, __s64 __user *data);

extern int ptrace_getfpregs(struct task_struct *child, __u32 __user *data);
extern int ptrace_setfpregs(struct task_struct *child, __u32 __user *data);

extern int ptrace_get_watch_regs(struct task_struct *child,
	struct pt_watch_regs __user *addr);
extern int ptrace_set_watch_regs(struct task_struct *child,
	struct pt_watch_regs __user *addr);

/*
 * Does the process account for user or for system time?
 */
#define user_mode(regs) (((regs)->cp0_status & KU_MASK) == KU_USER)

#define instruction_pointer(regs) ((regs)->cp0_epc)
#define profile_pc(regs) instruction_pointer(regs)

extern asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit);

extern NORET_TYPE void die(const char *, const struct pt_regs *) ATTRIB_NORET;

static inline void die_if_kernel(const char *str, const struct pt_regs *regs)
{
	if (unlikely(!user_mode(regs)))
		die(str, regs);
}

#endif

#endif /* _ASM_PTRACE_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* This file is subject to the terms and conditions of the GNU General Public
	3	* License. See the file "COPYING" in the main directory of this archive
	4	* for more details.
	5	*
	6	* Copyright (C) 1994, 95, 96, 97, 98, 99, 2000 by Ralf Baechle
	7	* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
	8	*/
	9	#ifndef _ASM_PTRACE_H
	10	#define _ASM_PTRACE_H
	11
1da177e4 LT	12	/* 0 - 31 are integer registers, 32 - 63 are fp registers. */
	13	#define FPR_BASE 32
	14	#define PC 64
	15	#define CAUSE 65
	16	#define BADVADDR 66
	17	#define MMHI 67
	18	#define MMLO 68
	19	#define FPC_CSR 69
	20	#define FPC_EIR 70
e50c0a8f RB	21	#define DSP_BASE 71 /* 3 more hi / lo register pairs */
e50c0a8f RB	22	#define DSP_CONTROL 77
9693a853	23	#define ACX 78
1da177e4 LT	24
	25	/*
	26	* This struct defines the way the registers are stored on the stack during a
	27	* system call/exception. As usual the registers k0/k1 aren't being saved.
	28	*/
	29	struct pt_regs {
875d43e7	30	#ifdef CONFIG_32BIT
1da177e4 LT	31	/* Pad bytes for argument save space on the stack. */
	32	unsigned long pad0[6];
	33	#endif
	34
	35	/* Saved main processor registers. */
	36	unsigned long regs[32];
	37
	38	/* Saved special registers. */
	39	unsigned long cp0_status;
1da177e4	40	unsigned long hi;
e50c0a8f	41	unsigned long lo;
9693a853 FBH	42	#ifdef CONFIG_CPU_HAS_SMARTMIPS
	43	unsigned long acx;
	44	#endif
1da177e4 LT	45	unsigned long cp0_badvaddr;
	46	unsigned long cp0_cause;
	47	unsigned long cp0_epc;
41c594ab RB	48	#ifdef CONFIG_MIPS_MT_SMTC
41c594ab RB	49	unsigned long cp0_tcstatus;
41c594ab	50	#endif /* CONFIG_MIPS_MT_SMTC */
0e90f49b	51	} __attribute__ ((aligned (8)));
1da177e4 LT	52
1da177e4 LT	53	/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
ea3d710f DJ	54	#define PTRACE_GETREGS 12
	55	#define PTRACE_SETREGS 13
	56	#define PTRACE_GETFPREGS 14
	57	#define PTRACE_SETFPREGS 15
1da177e4 LT	58	/* #define PTRACE_GETFPXREGS 18 */
	59	/* #define PTRACE_SETFPXREGS 19 */
	60
	61	#define PTRACE_OLDSETOPTIONS 21
	62
	63	#define PTRACE_GET_THREAD_AREA 25
	64	#define PTRACE_SET_THREAD_AREA 26
	65
ea3d710f DJ	66	/* Calls to trace a 64bit program from a 32bit program. */
	67	#define PTRACE_PEEKTEXT_3264 0xc0
	68	#define PTRACE_PEEKDATA_3264 0xc1
	69	#define PTRACE_POKETEXT_3264 0xc2
	70	#define PTRACE_POKEDATA_3264 0xc3
	71	#define PTRACE_GET_THREAD_AREA_3264 0xc4
	72
0926bf95 DD	73	/* Read and write watchpoint registers. */
	74	enum pt_watch_style {
	75	pt_watch_style_mips32,
	76	pt_watch_style_mips64
	77	};
	78	struct mips32_watch_regs {
c9440135	79	unsigned int watchlo[8];
0926bf95	80	/* Lower 16 bits of watchhi. */
c9440135	81	unsigned short watchhi[8];
0926bf95 DD	82	/* Valid mask and I R W bits.
	83	* bit 0 -- 1 if W bit is usable.
	84	* bit 1 -- 1 if R bit is usable.
	85	* bit 2 -- 1 if I bit is usable.
	86	* bits 3 - 11 -- Valid watchhi mask bits.
	87	*/
c9440135	88	unsigned short watch_masks[8];
0926bf95	89	/* The number of valid watch register pairs. */
c9440135	90	unsigned int num_valid;
0926bf95 DD	91	} __attribute__((aligned(8)));
	92
	93	struct mips64_watch_regs {
c9440135 DD	94	unsigned long long watchlo[8];
	95	unsigned short watchhi[8];
	96	unsigned short watch_masks[8];
	97	unsigned int num_valid;
0926bf95 DD	98	} __attribute__((aligned(8)));
	99
	100	struct pt_watch_regs {
	101	enum pt_watch_style style;
	102	union {
	103	struct mips32_watch_regs mips32;
	104	struct mips32_watch_regs mips64;
	105	};
	106	};
	107
	108	#define PTRACE_GET_WATCH_REGS 0xd0
	109	#define PTRACE_SET_WATCH_REGS 0xd1
	110
1da177e4 LT	111	#ifdef __KERNEL__
1da177e4 LT	112
0926bf95	113	#include <linux/compiler.h>
1da177e4	114	#include <linux/linkage.h>
f6a3176a	115	#include <linux/types.h>
8f9a2b32	116	#include <asm/isadep.h>
1da177e4	117
0926bf95 DD	118	struct task_struct;
0926bf95 DD	119
d302d05c RB	120	extern int ptrace_getregs(struct task_struct child, __s64 __user data);
	121	extern int ptrace_setregs(struct task_struct child, __s64 __user data);
	122
	123	extern int ptrace_getfpregs(struct task_struct child, __u32 __user data);
	124	extern int ptrace_setfpregs(struct task_struct child, __u32 __user data);
	125
0926bf95 DD	126	extern int ptrace_get_watch_regs(struct task_struct *child,
	127	struct pt_watch_regs __user *addr);
	128	extern int ptrace_set_watch_regs(struct task_struct *child,
	129	struct pt_watch_regs __user *addr);
	130
1da177e4 LT	131	/*
	132	* Does the process account for user or for system time?
	133	*/
	134	#define user_mode(regs) (((regs)->cp0_status & KU_MASK) == KU_USER)
	135
	136	#define instruction_pointer(regs) ((regs)->cp0_epc)
	137	#define profile_pc(regs) instruction_pointer(regs)
	138
1da177e4 LT	139	extern asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit);
1da177e4 LT	140
eae23f2c	141	extern NORET_TYPE void die(const char , const struct pt_regs ) ATTRIB_NORET;
2d911e9a	142
eae23f2c	143	static inline void die_if_kernel(const char str, const struct pt_regs regs)
2d911e9a RB	144	{
	145	if (unlikely(!user_mode(regs)))
	146	die(str, regs);
	147	}
	148
1da177e4 LT	149	#endif
	150
	151	#endif /* _ASM_PTRACE_H */