[apple/xnu.git] / osfmk / i386 / ktss.c

/*
 * 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 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.
 */
/*
 */

/*
 * Kernel task state segment.
 *
 * We don't use the i386 task switch mechanism.  We need a TSS
 * only to hold the kernel stack pointer for the current thread.
 *
 * XXX multiprocessor??
 */
#include <i386/tss.h>
#include <i386/seg.h>
#include <mach_kdb.h>

struct i386_tss	ktss = {
	0,				/* back link */
	0,				/* esp0 */
	KERNEL_DS,			/* ss0 */
	0,				/* esp1 */
	0,				/* ss1 */
	0,				/* esp2 */
	0,				/* ss2 */
	0,				/* cr3 */
	0,				/* eip */
	0,				/* eflags */
	0,				/* eax */
	0,				/* ecx */
	0,				/* edx */
	0,				/* ebx */
	0,				/* esp */
	0,				/* ebp */
	0,				/* esi */
	0,				/* edi */
	0,				/* es */
	0,				/* cs */
	0,				/* ss */
	0,				/* ds */
	0,				/* fs */
	0,				/* gs */
	KERNEL_LDT,			/* ldt */
	0,				/* trace_trap */
	0x0FFF				/* IO bitmap offset -
					   beyond end of TSS segment,
					   so no bitmap */
};

#if	MACH_KDB

struct i386_tss	dbtss = {
	0,				/* back link */
	0,				/* esp0 */
	KERNEL_DS,			/* ss0 */
	0,				/* esp1 */
	0,				/* ss1 */
	0,				/* esp2 */
	0,				/* ss2 */
	0,				/* cr3 */
	0,				/* eip */
	0,				/* eflags */
	0,				/* eax */
	0,				/* ecx */
	0,				/* edx */
	0,				/* ebx */
	0,				/* esp */
	0,				/* ebp */
	0,				/* esi */
	0,				/* edi */
	KERNEL_DS,			/* es */
	KERNEL_CS,			/* cs */
	KERNEL_DS,			/* ss */
	KERNEL_DS,			/* ds */
	KERNEL_DS,			/* fs */
	KERNEL_DS,			/* gs */
	KERNEL_LDT,			/* ldt */
	0,				/* trace_trap */
	0x0FFF				/* IO bitmap offset -
					   beyond end of TSS segment,
					   so no bitmap */
};

#endif	/* MACH_KDB */
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	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
	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	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.
	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/*
	23	* @OSF_COPYRIGHT@
	24	*/
	25	/*
	26	* Mach Operating System
	27	* Copyright (c) 1991,1990 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	/*
	54	* Kernel task state segment.
	55	*
	56	* We don't use the i386 task switch mechanism. We need a TSS
	57	* only to hold the kernel stack pointer for the current thread.
	58	*
	59	* XXX multiprocessor??
	60	*/
	61	#include <i386/tss.h>
	62	#include <i386/seg.h>
	63	#include <mach_kdb.h>
	64
65	struct i386_tss ktss = {
66	0, /* back link */
67	0, /* esp0 */
68	KERNEL_DS, /* ss0 */
69	0, /* esp1 */
70	0, /* ss1 */
71	0, /* esp2 */
72	0, /* ss2 */
73	0, /* cr3 */
74	0, /* eip */
75	0, /* eflags */
76	0, /* eax */
77	0, /* ecx */
78	0, /* edx */
79	0, /* ebx */
80	0, /* esp */
81	0, /* ebp */
82	0, /* esi */
83	0, /* edi */
84	0, /* es */
85	0, /* cs */
86	0, /* ss */
87	0, /* ds */
88	0, /* fs */
89	0, /* gs */
90	KERNEL_LDT, /* ldt */
91	0, /* trace_trap */
92	0x0FFF /* IO bitmap offset -
93	beyond end of TSS segment,
94	so no bitmap */
95	};
96
97	#if MACH_KDB
98
99	struct i386_tss dbtss = {
100	0, /* back link */
101	0, /* esp0 */
102	KERNEL_DS, /* ss0 */
103	0, /* esp1 */
104	0, /* ss1 */
105	0, /* esp2 */
106	0, /* ss2 */
107	0, /* cr3 */
108	0, /* eip */
109	0, /* eflags */
110	0, /* eax */
111	0, /* ecx */
112	0, /* edx */
113	0, /* ebx */
114	0, /* esp */
115	0, /* ebp */
116	0, /* esi */
117	0, /* edi */
118	KERNEL_DS, /* es */
119	KERNEL_CS, /* cs */
120	KERNEL_DS, /* ss */
121	KERNEL_DS, /* ds */
122	KERNEL_DS, /* fs */
123	KERNEL_DS, /* gs */
124	KERNEL_LDT, /* ldt */
125	0, /* trace_trap */
126	0x0FFF /* IO bitmap offset -
127	beyond end of TSS segment,
128	so no bitmap */
129	};
130
131	#endif /* MACH_KDB */