xref: /illumos-gate/usr/src/uts/intel/sys/tss.h (revision b4203d75)
1 /*
2  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
3  * Use is subject to license terms.
4  */
5 
6 #ifndef	_SYS_TSS_H
7 #define	_SYS_TSS_H
8 
9 #ifdef	__cplusplus
10 extern "C" {
11 #endif
12 
13 /*	Copyright (c) 1990, 1991 UNIX System Laboratories, Inc.	*/
14 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T	*/
15 /*	  All Rights Reserved	*/
16 
17 /*
18  * Copyright (c) 1990 The Regents of the University of California.
19  * All rights reserved.
20  *
21  * This code is derived from software contributed to Berkeley by
22  * William Jolitz.
23  *
24  * Redistribution and use in source and binary forms, with or without
25  * modification, are permitted provided that the following conditions
26  * are met:
27  * 1. Redistributions of source code must retain the above copyright
28  *    notice, this list of conditions and the following disclaimer.
29  * 2. Redistributions in binary form must reproduce the above copyright
30  *    notice, this list of conditions and the following disclaimer in the
31  *    documentation and/or other materials provided with the distribution.
32  * 3. All advertising materials mentioning features or use of this software
33  *    must display the following acknowledgement:
34  *	This product includes software developed by the University of
35  *	California, Berkeley and its contributors.
36  * 4. Neither the name of the University nor the names of its contributors
37  *    may be used to endorse or promote products derived from this software
38  *    without specific prior written permission.
39  *
40  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
41  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
44  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50  * SUCH DAMAGE.
51  *
52  *	from: @(#)tss.h	5.4 (Berkeley) 1/18/91
53  * $FreeBSD: src/sys/i386/include/tss.h,v 1.13 2002/09/23 05:04:05 peter Exp $
54  */
55 /*
56  * Copyright 2011 Joyent, Inc. All rights reserved.
57  */
58 
59 /*
60  * Maximum I/O address that will be in TSS bitmap
61  */
62 #define	MAXTSSIOADDR	0x3ff	/* XXX - needs to support 64K I/O space */
63 
64 #ifndef _ASM
65 
66 /*
67  * Task state segment (tss). Holds the processor state assoicated with a task.
68  *
69  * Historically, this header only exposed a struct tss that was relevant to the
70  * specific Intel architecture that we were deploying on. However, the tss
71  * structures are defined by the Intel Architecture and other consumers would
72  * like to use them. Rather than requiring them to duplicate all of this
73  * information, we instead expose each version under different names but in a
74  * backwards compatible manner.
75  */
76 
77 #pragma	pack(4)
78 struct tss64 {
79 	uint32_t	tss_rsvd0;	/* reserved, ignored */
80 	uint64_t	tss_rsp0; 	/* stack pointer CPL = 0 */
81 	uint64_t	tss_rsp1; 	/* stack pointer CPL = 1 */
82 	uint64_t	tss_rsp2; 	/* stack pointer CPL = 2 */
83 	uint64_t	tss_rsvd1;	/* reserved, ignored */
84 	uint64_t	tss_ist1;	/* Interrupt stack table 1 */
85 	uint64_t	tss_ist2;	/* Interrupt stack table 2 */
86 	uint64_t	tss_ist3;	/* Interrupt stack table 3 */
87 	uint64_t	tss_ist4;	/* Interrupt stack table 4 */
88 	uint64_t	tss_ist5;	/* Interrupt stack table 5 */
89 	uint64_t	tss_ist6;	/* Interrupt stack table 6 */
90 	uint64_t	tss_ist7;	/* Interrupt stack table 7 */
91 	uint64_t	tss_rsvd2;	/* reserved, ignored */
92 	uint16_t	tss_rsvd3;	/* reserved, ignored */
93 	uint16_t	tss_bitmapbase;	/* io permission bitmap base address */
94 };
95 #pragma	pack()
96 
97 struct tss32 {
98 	uint16_t	tss_link;	/* 16-bit prior TSS selector */
99 	uint16_t	tss_rsvd0;	/* reserved, ignored */
100 	uint32_t	tss_esp0;
101 	uint16_t	tss_ss0;
102 	uint16_t	tss_rsvd1;	/* reserved, ignored */
103 	uint32_t	tss_esp1;
104 	uint16_t	tss_ss1;
105 	uint16_t	tss_rsvd2;	/* reserved, ignored */
106 	uint32_t	tss_esp2;
107 	uint16_t	tss_ss2;
108 	uint16_t	tss_rsvd3;	/* reserved, ignored */
109 	uint32_t	tss_cr3;
110 	uint32_t	tss_eip;
111 	uint32_t	tss_eflags;
112 	uint32_t	tss_eax;
113 	uint32_t	tss_ecx;
114 	uint32_t	tss_edx;
115 	uint32_t	tss_ebx;
116 	uint32_t	tss_esp;
117 	uint32_t	tss_ebp;
118 	uint32_t	tss_esi;
119 	uint32_t	tss_edi;
120 	uint16_t	tss_es;
121 	uint16_t	tss_rsvd4;	/* reserved, ignored */
122 	uint16_t	tss_cs;
123 	uint16_t	tss_rsvd5;	/* reserved, ignored */
124 	uint16_t	tss_ss;
125 	uint16_t	tss_rsvd6;	/* reserved, ignored */
126 	uint16_t	tss_ds;
127 	uint16_t	tss_rsvd7;	/* reserved, ignored */
128 	uint16_t	tss_fs;
129 	uint16_t	tss_rsvd8;	/* reserved, ignored */
130 	uint16_t	tss_gs;
131 	uint16_t	tss_rsvd9;	/* reserved, ignored */
132 	uint16_t	tss_ldt;
133 	uint16_t	tss_rsvd10;	/* reserved, ignored */
134 	uint16_t	tss_rsvd11;	/* reserved, ignored */
135 	uint16_t	tss_bitmapbase;	/* io permission bitmap base address */
136 };
137 
138 struct tss16 {
139 	uint16_t	tss_link;
140 	uint16_t	tss_sp0;
141 	uint16_t	tss_ss0;
142 	uint16_t	tss_sp1;
143 	uint16_t	tss_ss1;
144 	uint16_t	tss_sp2;
145 	uint16_t	tss_ss2;
146 	uint16_t	tss_ip;
147 	uint16_t	tss_flag;
148 	uint16_t	tss_ax;
149 	uint16_t	tss_cx;
150 	uint16_t	tss_dx;
151 	uint16_t	tss_bx;
152 	uint16_t	tss_sp;
153 	uint16_t	tss_bp;
154 	uint16_t	tss_si;
155 	uint16_t	tss_di;
156 	uint16_t	tss_es;
157 	uint16_t	tss_cs;
158 	uint16_t	tss_ss;
159 	uint16_t	tss_ds;
160 	uint16_t	tss_ldt;
161 };
162 
163 #if defined(__amd64)
164 
165 typedef	struct tss64	tss_t;
166 
167 #elif defined(__i386)
168 
169 typedef	struct tss32	tss_t;
170 
171 #endif	/* __i386 */
172 
173 #endif	/* !_ASM */
174 
175 #ifdef	__cplusplus
176 }
177 #endif
178 
179 #endif	/* _SYS_TSS_H */
180