[deliverable/linux.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

#ifdef CONFIG_64BIT
#define __ARCH_WANT_COMPAT_SYS_PTRACE
#endif

/* 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 <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
5d9a76cd TB	12	#ifdef CONFIG_64BIT
	13	#define __ARCH_WANT_COMPAT_SYS_PTRACE
	14	#endif
1da177e4	15
1da177e4 LT	16	/* 0 - 31 are integer registers, 32 - 63 are fp registers. */
	17	#define FPR_BASE 32
	18	#define PC 64
	19	#define CAUSE 65
	20	#define BADVADDR 66
	21	#define MMHI 67
	22	#define MMLO 68
	23	#define FPC_CSR 69
	24	#define FPC_EIR 70
e50c0a8f RB	25	#define DSP_BASE 71 /* 3 more hi / lo register pairs */
e50c0a8f RB	26	#define DSP_CONTROL 77
9693a853	27	#define ACX 78
1da177e4 LT	28
	29	/*
	30	* This struct defines the way the registers are stored on the stack during a
	31	* system call/exception. As usual the registers k0/k1 aren't being saved.
	32	*/
	33	struct pt_regs {
875d43e7	34	#ifdef CONFIG_32BIT
1da177e4 LT	35	/* Pad bytes for argument save space on the stack. */
	36	unsigned long pad0[6];
	37	#endif
	38
	39	/* Saved main processor registers. */
	40	unsigned long regs[32];
	41
	42	/* Saved special registers. */
	43	unsigned long cp0_status;
1da177e4	44	unsigned long hi;
e50c0a8f	45	unsigned long lo;
9693a853 FBH	46	#ifdef CONFIG_CPU_HAS_SMARTMIPS
	47	unsigned long acx;
	48	#endif
1da177e4 LT	49	unsigned long cp0_badvaddr;
	50	unsigned long cp0_cause;
	51	unsigned long cp0_epc;
41c594ab RB	52	#ifdef CONFIG_MIPS_MT_SMTC
41c594ab RB	53	unsigned long cp0_tcstatus;
41c594ab	54	#endif /* CONFIG_MIPS_MT_SMTC */
0e90f49b	55	} __attribute__ ((aligned (8)));
1da177e4 LT	56
1da177e4 LT	57	/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
ea3d710f DJ	58	#define PTRACE_GETREGS 12
	59	#define PTRACE_SETREGS 13
	60	#define PTRACE_GETFPREGS 14
	61	#define PTRACE_SETFPREGS 15
1da177e4 LT	62	/* #define PTRACE_GETFPXREGS 18 */
	63	/* #define PTRACE_SETFPXREGS 19 */
	64
	65	#define PTRACE_OLDSETOPTIONS 21
	66
	67	#define PTRACE_GET_THREAD_AREA 25
	68	#define PTRACE_SET_THREAD_AREA 26
	69
ea3d710f DJ	70	/* Calls to trace a 64bit program from a 32bit program. */
	71	#define PTRACE_PEEKTEXT_3264 0xc0
	72	#define PTRACE_PEEKDATA_3264 0xc1
	73	#define PTRACE_POKETEXT_3264 0xc2
	74	#define PTRACE_POKEDATA_3264 0xc3
	75	#define PTRACE_GET_THREAD_AREA_3264 0xc4
	76
0926bf95 DD	77	/* Read and write watchpoint registers. */
	78	enum pt_watch_style {
	79	pt_watch_style_mips32,
	80	pt_watch_style_mips64
	81	};
	82	struct mips32_watch_regs {
c9440135	83	unsigned int watchlo[8];
0926bf95	84	/* Lower 16 bits of watchhi. */
c9440135	85	unsigned short watchhi[8];
0926bf95 DD	86	/* Valid mask and I R W bits.
	87	* bit 0 -- 1 if W bit is usable.
	88	* bit 1 -- 1 if R bit is usable.
	89	* bit 2 -- 1 if I bit is usable.
	90	* bits 3 - 11 -- Valid watchhi mask bits.
	91	*/
c9440135	92	unsigned short watch_masks[8];
0926bf95	93	/* The number of valid watch register pairs. */
c9440135	94	unsigned int num_valid;
0926bf95 DD	95	} __attribute__((aligned(8)));
	96
	97	struct mips64_watch_regs {
c9440135 DD	98	unsigned long long watchlo[8];
	99	unsigned short watchhi[8];
	100	unsigned short watch_masks[8];
	101	unsigned int num_valid;
0926bf95 DD	102	} __attribute__((aligned(8)));
	103
	104	struct pt_watch_regs {
	105	enum pt_watch_style style;
	106	union {
	107	struct mips32_watch_regs mips32;
	108	struct mips32_watch_regs mips64;
	109	};
	110	};
	111
	112	#define PTRACE_GET_WATCH_REGS 0xd0
	113	#define PTRACE_SET_WATCH_REGS 0xd1
	114
1da177e4 LT	115	#ifdef __KERNEL__
1da177e4 LT	116
0926bf95	117	#include <linux/compiler.h>
1da177e4	118	#include <linux/linkage.h>
8f9a2b32	119	#include <asm/isadep.h>
1da177e4	120
0926bf95 DD	121	struct task_struct;
0926bf95 DD	122
d302d05c RB	123	extern int ptrace_getregs(struct task_struct child, __s64 __user data);
	124	extern int ptrace_setregs(struct task_struct child, __s64 __user data);
	125
	126	extern int ptrace_getfpregs(struct task_struct child, __u32 __user data);
	127	extern int ptrace_setfpregs(struct task_struct child, __u32 __user data);
	128
0926bf95 DD	129	extern int ptrace_get_watch_regs(struct task_struct *child,
	130	struct pt_watch_regs __user *addr);
	131	extern int ptrace_set_watch_regs(struct task_struct *child,
	132	struct pt_watch_regs __user *addr);
	133
1da177e4 LT	134	/*
	135	* Does the process account for user or for system time?
	136	*/
	137	#define user_mode(regs) (((regs)->cp0_status & KU_MASK) == KU_USER)
	138
	139	#define instruction_pointer(regs) ((regs)->cp0_epc)
	140	#define profile_pc(regs) instruction_pointer(regs)
	141
1da177e4 LT	142	extern asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit);
1da177e4 LT	143
eae23f2c	144	extern NORET_TYPE void die(const char , const struct pt_regs ) ATTRIB_NORET;
2d911e9a	145
eae23f2c	146	static inline void die_if_kernel(const char str, const struct pt_regs regs)
2d911e9a RB	147	{
	148	if (unlikely(!user_mode(regs)))
	149	die(str, regs);
	150	}
	151
1da177e4 LT	152	#endif
	153
	154	#endif /* _ASM_PTRACE_H */