[apple/xnu.git] / osfmk / mach / i386 / thread_status.h

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * @OSF_COPYRIGHT@
 */
/* 
 * Mach Operating System
 * Copyright (c) 1991,1990,1989 Carnegie Mellon University
 * All Rights Reserved.
 * 
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 * 
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 * 
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */
/*
 */
/*
 *	File:	thread_status.h
 *	Author:	Avadis Tevanian, Jr.
 *	Date:	1985
 *
 *	This file contains the structure definitions for the thread
 *	state as applied to I386 processors.
 */

#ifndef	_MACH_I386_THREAD_STATUS_H_
#define _MACH_I386_THREAD_STATUS_H_

#include <mach/i386/fp_reg.h>
#include <mach/i386/thread_state.h>
#include <architecture/i386/frame.h>	/* FIXME */
#include <architecture/i386/fpu.h>	/* FIXME */
/*
 *	i386_thread_state	this is the structure that is exported
 *				to user threads for use in status/mutate
 *				calls.  This structure should never
 *				change.
 *
 *	i386_float_state	exported to use threads for access to 
 *				floating point registers. Try not to 
 *				change this one, either.
 *
 *	i386_isa_port_map_state	exported to user threads to allow
 *				selective in/out operations
 *
 * 	i386_v86_assist_state 
 *
 *	thread_syscall_state 
 */

/*     THREAD_STATE_FLAVOR_LIST 0 */
#define i386_NEW_THREAD_STATE	1	/* used to be i386_THREAD_STATE */
#define i386_FLOAT_STATE	2
#define i386_ISA_PORT_MAP_STATE	3
#define i386_V86_ASSIST_STATE	4
#define i386_REGS_SEGS_STATE	5
#define THREAD_SYSCALL_STATE	6
#define THREAD_STATE_NONE	7
#define i386_SAVED_STATE	8


/*
 * VALID_THREAD_STATE_FLAVOR is a platform specific macro that when passed
 * an exception flavor will return if that is a defined flavor for that
 * platform. The macro must be manually updated to include all of the valid
 * exception flavors as defined above.
 */
#define VALID_THREAD_STATE_FLAVOR(x)            \
        ((x == i386_NEW_THREAD_STATE)        || \
	 (x == i386_FLOAT_STATE)             || \
	 (x == i386_ISA_PORT_MAP_STATE)      || \
	 (x == i386_V86_ASSIST_STATE)        || \
	 (x == i386_REGS_SEGS_STATE)         || \
	 (x == THREAD_SYSCALL_STATE)         || \
	 (x == THREAD_STATE_NONE)            || \
	 (x == i386_SAVED_STATE))

/*
 * This structure is used for both
 * i386_THREAD_STATE and i386_REGS_SEGS_STATE.
 */
struct i386_new_thread_state {
	unsigned int	gs;
	unsigned int	fs;
	unsigned int	es;
	unsigned int	ds;
	unsigned int	edi;
	unsigned int	esi;
	unsigned int	ebp;
	unsigned int	esp;
	unsigned int	ebx;
	unsigned int	edx;
	unsigned int	ecx;
	unsigned int	eax;
	unsigned int	eip;
	unsigned int	cs;
	unsigned int	efl;
	unsigned int	uesp;
	unsigned int	ss;
};
#define i386_NEW_THREAD_STATE_COUNT	\
		(sizeof (struct i386_new_thread_state)/sizeof(unsigned int))

/*
 * Subset of saved state stored by processor on kernel-to-kernel
 * trap.  (Used by ddb to examine state guaranteed to be present
 * on all traps into debugger.)
 */
struct i386_saved_state_from_kernel {
	unsigned int	gs;
	unsigned int	fs;
	unsigned int	es;
	unsigned int	ds;
	unsigned int	edi;
	unsigned int	esi;
	unsigned int	ebp;
	unsigned int	esp;		/* kernel esp stored by pusha -
					   we save cr2 here later */
	unsigned int	ebx;
	unsigned int	edx;
	unsigned int	ecx;
	unsigned int	eax;
	unsigned int	trapno;
	unsigned int	err;
	unsigned int	eip;
	unsigned int	cs;
	unsigned int	efl;
};

/*
 * The format in which thread state is saved by Mach on this machine.  This
 * state flavor is most efficient for exception RPC's to kernel-loaded
 * servers, because copying can be avoided:
 */
struct i386_saved_state {
	unsigned int	gs;
	unsigned int	fs;
	unsigned int	es;
	unsigned int	ds;
	unsigned int	edi;
	unsigned int	esi;
	unsigned int	ebp;
	unsigned int	esp;		/* kernel esp stored by pusha -
					   we save cr2 here later */
	unsigned int	ebx;
	unsigned int	edx;
	unsigned int	ecx;
	unsigned int	eax;
	unsigned int	trapno;
	unsigned int	err;
	unsigned int	eip;
	unsigned int	cs;
	unsigned int	efl;
	unsigned int	uesp;
	unsigned int	ss;
	struct v86_segs {
	    unsigned int v86_es;	/* virtual 8086 segment registers */
	    unsigned int v86_ds;
	    unsigned int v86_fs;
	    unsigned int v86_gs;
	} v86_segs;
#define i386_SAVED_ARGV_COUNT	7
	unsigned int	argv_status;	/* Boolean flag indicating whether or
					 * not Mach copied in the args */
	unsigned int	argv[i386_SAVED_ARGV_COUNT];
					/* The return address, and the first several
					 * function call args from the stack, for
					 * efficient syscall exceptions */
};
#define i386_SAVED_STATE_COUNT	(sizeof (struct i386_saved_state)/sizeof(unsigned int))
#define i386_REGS_SEGS_STATE_COUNT	i386_SAVED_STATE_COUNT

/*
 * Machine-independent way for servers and Mach's exception mechanism to
 * choose the most efficient state flavor for exception RPC's:
 */
#define MACHINE_THREAD_STATE		i386_SAVED_STATE
#define MACHINE_THREAD_STATE_COUNT	i386_SAVED_STATE_COUNT

/*
 * Largest state on this machine:
 * (be sure mach/machine/thread_state.h matches!)
 */
#define THREAD_MACHINE_STATE_MAX	i386_SAVED_STATE_COUNT

/* 
 * Floating point state.
 *
 * fpkind tells in what way floating point operations are supported.  
 * See the values for fp_kind in <mach/i386/fp_reg.h>.
 * 
 * If the kind is FP_NO, then calls to set the state will fail, and 
 * thread_getstatus will return garbage for the rest of the state.
 * If "initialized" is false, then the rest of the state is garbage.  
 * Clients can set "initialized" to false to force the coprocessor to 
 * be reset.
 * "exc_status" is non-zero if the thread has noticed (but not 
 * proceeded from) a coprocessor exception.  It contains the status 
 * word with the exception bits set.  The status word in "fp_status" 
 * will have the exception bits turned off.  If an exception bit in 
 * "fp_status" is turned on, then "exc_status" should be zero.  This 
 * happens when the coprocessor exception is noticed after the system 
 * has context switched to some other thread.
 * 
 * If kind is FP_387, then "state" is a i387_state.  Other kinds might
 * also use i387_state, but somebody will have to verify it (XXX).
 * Note that the registers are ordered from top-of-stack down, not
 * according to physical register number.
 */

#define FP_STATE_BYTES \
	(sizeof (struct i386_fp_save) + sizeof (struct i386_fp_regs))

struct i386_float_state {
	int		fpkind;			/* FP_NO..FP_387 (readonly) */
	int		initialized;
	unsigned char	hw_state[FP_STATE_BYTES]; /* actual "hardware" state */
	int		exc_status;		/* exception status (readonly) */
};
#define i386_FLOAT_STATE_COUNT \
		(sizeof(struct i386_float_state)/sizeof(unsigned int))


#define PORT_MAP_BITS 0x400
struct i386_isa_port_map_state {
	unsigned char	pm[PORT_MAP_BITS>>3];
};

#define i386_ISA_PORT_MAP_STATE_COUNT \
		(sizeof(struct i386_isa_port_map_state)/sizeof(unsigned int))

/*
 * V8086 assist supplies a pointer to an interrupt
 * descriptor table in task space.
 */
struct i386_v86_assist_state {
	unsigned int	int_table;	/* interrupt table address */
	int		int_count;	/* interrupt table size */
};

struct v86_interrupt_table {
	unsigned int	count;	/* count of pending interrupts */
	unsigned short	mask;	/* ignore this interrupt if true */
	unsigned short	vec;	/* vector to take */
};

#define	i386_V86_ASSIST_STATE_COUNT \
	    (sizeof(struct i386_v86_assist_state)/sizeof(unsigned int))

struct thread_syscall_state {
	unsigned eax;
	unsigned edx;
	unsigned efl;
	unsigned eip;
	unsigned esp;
};

#define i386_THREAD_SYSCALL_STATE_COUNT \
		(sizeof(struct thread_syscall_state) / sizeof(unsigned int))

/*
 * Main thread state consists of
 * general registers, segment registers,
 * eip and eflags.
 */

#define i386_THREAD_STATE	-1

typedef struct {
    unsigned int	eax;
    unsigned int	ebx;
    unsigned int	ecx;
    unsigned int	edx;
    unsigned int	edi;
    unsigned int	esi;
    unsigned int	ebp;
    unsigned int	esp;
    unsigned int	ss;
    unsigned int	eflags;
    unsigned int	eip;
    unsigned int	cs;
    unsigned int	ds;
    unsigned int	es;
    unsigned int	fs;
    unsigned int	gs;
} i386_thread_state_t;

#define i386_THREAD_STATE_COUNT		\
    ( sizeof (i386_thread_state_t) / sizeof (int) )

/*
 * Default segment register values.
 */
    
#define USER_CODE_SELECTOR	0x0017
#define USER_DATA_SELECTOR	0x001f
#define KERN_CODE_SELECTOR	0x0008
#define KERN_DATA_SELECTOR	0x0010

/*
 * Thread floating point state
 * includes FPU environment as
 * well as the register stack.
 */
 
#define i386_THREAD_FPSTATE	-2

typedef struct {
    fp_env_t		environ;
    fp_stack_t		stack;
} i386_thread_fpstate_t;

#define i386_THREAD_FPSTATE_COUNT 	\
    ( sizeof (i386_thread_fpstate_t) / sizeof (int) )

/*
 * Extra state that may be
 * useful to exception handlers.
 */

#define i386_THREAD_EXCEPTSTATE	-3

typedef struct {
    unsigned int	trapno;
    err_code_t		err;
} i386_thread_exceptstate_t;

#define i386_THREAD_EXCEPTSTATE_COUNT	\
    ( sizeof (i386_thread_exceptstate_t) / sizeof (int) )

/*
 * Per-thread variable used
 * to store 'self' id for cthreads.
 */
 
#define i386_THREAD_CTHREADSTATE	-4
 
typedef struct {
    unsigned int	self;
} i386_thread_cthreadstate_t;

#define i386_THREAD_CTHREADSTATE_COUNT	\
    ( sizeof (i386_thread_cthreadstate_t) / sizeof (int) )

#endif	/* _MACH_I386_THREAD_STATUS_H_ */
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
de355530 A	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
	11	*
	12	* This Original Code and all software distributed under the License are
	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
de355530 A	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
1c79356b A	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/*
	23	* @OSF_COPYRIGHT@
	24	*/
	25	/*
	26	* Mach Operating System
	27	* Copyright (c) 1991,1990,1989 Carnegie Mellon University
	28	* All Rights Reserved.
	29	*
	30	* Permission to use, copy, modify and distribute this software and its
	31	* documentation is hereby granted, provided that both the copyright
	32	* notice and this permission notice appear in all copies of the
	33	* software, derivative works or modified versions, and any portions
	34	* thereof, and that both notices appear in supporting documentation.
	35	*
	36	* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
	37	* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
	38	* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	39	*
	40	* Carnegie Mellon requests users of this software to return to
	41	*
	42	* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
	43	* School of Computer Science
	44	* Carnegie Mellon University
	45	* Pittsburgh PA 15213-3890
	46	*
	47	* any improvements or extensions that they make and grant Carnegie Mellon
	48	* the rights to redistribute these changes.
	49	*/
	50	/*
	51	*/
	52	/*
	53	* File: thread_status.h
	54	* Author: Avadis Tevanian, Jr.
	55	* Date: 1985
	56	*
	57	* This file contains the structure definitions for the thread
	58	* state as applied to I386 processors.
	59	*/
	60
	61	#ifndef _MACH_I386_THREAD_STATUS_H_
	62	#define _MACH_I386_THREAD_STATUS_H_
	63
	64	#include <mach/i386/fp_reg.h>
	65	#include <mach/i386/thread_state.h>
	66	#include <architecture/i386/frame.h> /* FIXME */
	67	#include <architecture/i386/fpu.h> /* FIXME */
	68	/*
	69	* i386_thread_state this is the structure that is exported
	70	* to user threads for use in status/mutate
	71	* calls. This structure should never
	72	* change.
	73	*
	74	* i386_float_state exported to use threads for access to
	75	* floating point registers. Try not to
	76	* change this one, either.
	77	*
	78	* i386_isa_port_map_state exported to user threads to allow
	79	* selective in/out operations
	80	*
	81	* i386_v86_assist_state
	82	*
83	* thread_syscall_state
84	*/
85
86	/* THREAD_STATE_FLAVOR_LIST 0 */
87	#define i386_NEW_THREAD_STATE 1 /* used to be i386_THREAD_STATE */
88	#define i386_FLOAT_STATE 2
89	#define i386_ISA_PORT_MAP_STATE 3
90	#define i386_V86_ASSIST_STATE 4
91	#define i386_REGS_SEGS_STATE 5
92	#define THREAD_SYSCALL_STATE 6
93	#define THREAD_STATE_NONE 7
94	#define i386_SAVED_STATE 8
95
96
97	/*
98	* VALID_THREAD_STATE_FLAVOR is a platform specific macro that when passed
99	* an exception flavor will return if that is a defined flavor for that
100	* platform. The macro must be manually updated to include all of the valid
101	* exception flavors as defined above.
102	*/
103	#define VALID_THREAD_STATE_FLAVOR(x) \
104	((x == i386_NEW_THREAD_STATE) \|\| \
105	(x == i386_FLOAT_STATE) \|\| \
106	(x == i386_ISA_PORT_MAP_STATE) \|\| \
107	(x == i386_V86_ASSIST_STATE) \|\| \
108	(x == i386_REGS_SEGS_STATE) \|\| \
109	(x == THREAD_SYSCALL_STATE) \|\| \
110	(x == THREAD_STATE_NONE) \|\| \
111	(x == i386_SAVED_STATE))
112
113	/*
114	* This structure is used for both
115	* i386_THREAD_STATE and i386_REGS_SEGS_STATE.
116	*/
117	struct i386_new_thread_state {
118	unsigned int gs;
119	unsigned int fs;
120	unsigned int es;
121	unsigned int ds;
122	unsigned int edi;
123	unsigned int esi;
124	unsigned int ebp;
125	unsigned int esp;
126	unsigned int ebx;
127	unsigned int edx;
128	unsigned int ecx;
129	unsigned int eax;
130	unsigned int eip;
131	unsigned int cs;
132	unsigned int efl;
133	unsigned int uesp;
134	unsigned int ss;
135	};
136	#define i386_NEW_THREAD_STATE_COUNT \
137	(sizeof (struct i386_new_thread_state)/sizeof(unsigned int))
138
139	/*
140	* Subset of saved state stored by processor on kernel-to-kernel
141	* trap. (Used by ddb to examine state guaranteed to be present
142	* on all traps into debugger.)
143	*/
144	struct i386_saved_state_from_kernel {
145	unsigned int gs;
146	unsigned int fs;
147	unsigned int es;
148	unsigned int ds;
149	unsigned int edi;
150	unsigned int esi;
151	unsigned int ebp;
152	unsigned int esp; /* kernel esp stored by pusha -
153	we save cr2 here later */
154	unsigned int ebx;
155	unsigned int edx;
156	unsigned int ecx;
157	unsigned int eax;
158	unsigned int trapno;
159	unsigned int err;
160	unsigned int eip;
161	unsigned int cs;
162	unsigned int efl;
163	};
164
165	/*
166	* The format in which thread state is saved by Mach on this machine. This
167	* state flavor is most efficient for exception RPC's to kernel-loaded
168	* servers, because copying can be avoided:
169	*/
170	struct i386_saved_state {
171	unsigned int gs;
172	unsigned int fs;
173	unsigned int es;
174	unsigned int ds;
175	unsigned int edi;
176	unsigned int esi;
177	unsigned int ebp;
178	unsigned int esp; /* kernel esp stored by pusha -
179	we save cr2 here later */
180	unsigned int ebx;
181	unsigned int edx;
182	unsigned int ecx;
183	unsigned int eax;
184	unsigned int trapno;
185	unsigned int err;
186	unsigned int eip;
187	unsigned int cs;
188	unsigned int efl;
189	unsigned int uesp;
190	unsigned int ss;
191	struct v86_segs {
192	unsigned int v86_es; /* virtual 8086 segment registers */
193	unsigned int v86_ds;
194	unsigned int v86_fs;
195	unsigned int v86_gs;
196	} v86_segs;
197	#define i386_SAVED_ARGV_COUNT 7
198	unsigned int argv_status; /* Boolean flag indicating whether or
199	* not Mach copied in the args */
200	unsigned int argv[i386_SAVED_ARGV_COUNT];
201	/* The return address, and the first several
202	* function call args from the stack, for
203	* efficient syscall exceptions */
204	};
205	#define i386_SAVED_STATE_COUNT (sizeof (struct i386_saved_state)/sizeof(unsigned int))
206	#define i386_REGS_SEGS_STATE_COUNT i386_SAVED_STATE_COUNT
207
208	/*
209	* Machine-independent way for servers and Mach's exception mechanism to
210	* choose the most efficient state flavor for exception RPC's:
211	*/
212	#define MACHINE_THREAD_STATE i386_SAVED_STATE
213	#define MACHINE_THREAD_STATE_COUNT i386_SAVED_STATE_COUNT
214
215	/*
216	* Largest state on this machine:
217	* (be sure mach/machine/thread_state.h matches!)
218	*/
219	#define THREAD_MACHINE_STATE_MAX i386_SAVED_STATE_COUNT
220
221	/*
222	* Floating point state.
223	*
224	* fpkind tells in what way floating point operations are supported.
225	* See the values for fp_kind in <mach/i386/fp_reg.h>.
226	*
227	* If the kind is FP_NO, then calls to set the state will fail, and
228	* thread_getstatus will return garbage for the rest of the state.
229	* If "initialized" is false, then the rest of the state is garbage.
230	* Clients can set "initialized" to false to force the coprocessor to
231	* be reset.
232	* "exc_status" is non-zero if the thread has noticed (but not
233	* proceeded from) a coprocessor exception. It contains the status
234	* word with the exception bits set. The status word in "fp_status"
235	* will have the exception bits turned off. If an exception bit in
236	* "fp_status" is turned on, then "exc_status" should be zero. This
237	* happens when the coprocessor exception is noticed after the system
238	* has context switched to some other thread.
239	*
240	* If kind is FP_387, then "state" is a i387_state. Other kinds might
241	* also use i387_state, but somebody will have to verify it (XXX).
242	* Note that the registers are ordered from top-of-stack down, not
243	* according to physical register number.
244	*/
245
246	#define FP_STATE_BYTES \
247	(sizeof (struct i386_fp_save) + sizeof (struct i386_fp_regs))
248
249	struct i386_float_state {
250	int fpkind; /* FP_NO..FP_387 (readonly) */
251	int initialized;
252	unsigned char hw_state[FP_STATE_BYTES]; /* actual "hardware" state */
253	int exc_status; /* exception status (readonly) */
254	};
255	#define i386_FLOAT_STATE_COUNT \
256	(sizeof(struct i386_float_state)/sizeof(unsigned int))
257
258
259	#define PORT_MAP_BITS 0x400
260	struct i386_isa_port_map_state {
261	unsigned char pm[PORT_MAP_BITS>>3];
262	};
263
264	#define i386_ISA_PORT_MAP_STATE_COUNT \
265	(sizeof(struct i386_isa_port_map_state)/sizeof(unsigned int))
266
267	/*
268	* V8086 assist supplies a pointer to an interrupt
269	* descriptor table in task space.
270	*/
271	struct i386_v86_assist_state {
272	unsigned int int_table; /* interrupt table address */
273	int int_count; /* interrupt table size */
274	};
275
276	struct v86_interrupt_table {
277	unsigned int count; /* count of pending interrupts */
278	unsigned short mask; /* ignore this interrupt if true */
279	unsigned short vec; /* vector to take */
280	};
281
282	#define i386_V86_ASSIST_STATE_COUNT \
283	(sizeof(struct i386_v86_assist_state)/sizeof(unsigned int))
284
285	struct thread_syscall_state {
286	unsigned eax;
287	unsigned edx;
288	unsigned efl;
289	unsigned eip;
290	unsigned esp;
291	};
292
293	#define i386_THREAD_SYSCALL_STATE_COUNT \
294	(sizeof(struct thread_syscall_state) / sizeof(unsigned int))
295
296	/*
297	* Main thread state consists of
298	* general registers, segment registers,
299	* eip and eflags.
300	*/
301
302	#define i386_THREAD_STATE -1
303
304	typedef struct {
305	unsigned int eax;
306	unsigned int ebx;
307	unsigned int ecx;
308	unsigned int edx;
309	unsigned int edi;
310	unsigned int esi;
311	unsigned int ebp;
312	unsigned int esp;
313	unsigned int ss;
314	unsigned int eflags;
315	unsigned int eip;
316	unsigned int cs;
317	unsigned int ds;
318	unsigned int es;
319	unsigned int fs;
320	unsigned int gs;
321	} i386_thread_state_t;
322
323	#define i386_THREAD_STATE_COUNT \
324	( sizeof (i386_thread_state_t) / sizeof (int) )
325
326	/*
327	* Default segment register values.
328	*/
329
330	#define USER_CODE_SELECTOR 0x0017
331	#define USER_DATA_SELECTOR 0x001f
332	#define KERN_CODE_SELECTOR 0x0008
333	#define KERN_DATA_SELECTOR 0x0010
334
335	/*
336	* Thread floating point state
337	* includes FPU environment as
338	* well as the register stack.
339	*/
340
341	#define i386_THREAD_FPSTATE -2
342
343	typedef struct {
344	fp_env_t environ;
345	fp_stack_t stack;
346	} i386_thread_fpstate_t;
347
348	#define i386_THREAD_FPSTATE_COUNT \
349	( sizeof (i386_thread_fpstate_t) / sizeof (int) )
350
351	/*
352	* Extra state that may be
353	* useful to exception handlers.
354	*/
355
356	#define i386_THREAD_EXCEPTSTATE -3
357
358	typedef struct {
359	unsigned int trapno;
360	err_code_t err;
361	} i386_thread_exceptstate_t;
362
363	#define i386_THREAD_EXCEPTSTATE_COUNT \
364	( sizeof (i386_thread_exceptstate_t) / sizeof (int) )
365
366	/*
367	* Per-thread variable used
368	* to store 'self' id for cthreads.
369	*/
370
371	#define i386_THREAD_CTHREADSTATE -4
372
373	typedef struct {
374	unsigned int self;
375	} i386_thread_cthreadstate_t;
376
377	#define i386_THREAD_CTHREADSTATE_COUNT \
378	( sizeof (i386_thread_cthreadstate_t) / sizeof (int) )
379
380	#endif /* _MACH_I386_THREAD_STATUS_H_ */