xref: /freebsd/sys/cddl/dev/dtrace/x86/regset.h (revision 0d66206fff44f864ea8a4b220c3a53b4caa959a0)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  *
22  * $FreeBSD$
23  */
24 /*
25  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
26  * Use is subject to license terms.
27  */
28 
29 /*	Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
30 
31 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T		*/
32 /*	All Rights Reserved	*/
33 
34 #ifndef	_REGSET_H
35 #define	_REGSET_H
36 
37 /*
38  * #pragma ident	"@(#)regset.h	1.11	05/06/08 SMI"
39  */
40 
41 #ifdef __cplusplus
42 extern "C" {
43 #endif
44 
45 /*
46  * The names and offsets defined here should be specified by the
47  * AMD64 ABI suppl.
48  *
49  * We make fsbase and gsbase part of the lwp context (since they're
50  * the only way to access the full 64-bit address range via the segment
51  * registers) and thus belong here too.  However we treat them as
52  * read-only; if %fs or %gs are updated, the results of the descriptor
53  * table lookup that those updates implicitly cause will be reflected
54  * in the corresponding fsbase and/or gsbase values the next time the
55  * context can be inspected.  However it is NOT possible to override
56  * the fsbase/gsbase settings via this interface.
57  *
58  * Direct modification of the base registers (thus overriding the
59  * descriptor table base address) can be achieved with _lwp_setprivate.
60  */
61 
62 #define	REG_GSBASE	27
63 #define	REG_FSBASE	26
64 #define	REG_SS		25
65 #define	REG_RSP		24
66 #define	REG_RFL		23
67 #define	REG_CS		22
68 #define	REG_RIP		21
69 #define	REG_DS		20
70 #define	REG_ES		19
71 #define	REG_ERR		18
72 #define	REG_GS		17
73 #define	REG_FS		16
74 #define	REG_TRAPNO	15
75 #define	REG_RAX		14
76 #define	REG_RCX		13
77 #define	REG_RDX		12
78 #define	REG_RBX		11
79 #define	REG_RBP		10
80 #define	REG_RSI		9
81 #define	REG_RDI		8
82 #define	REG_R8		7
83 #define	REG_R9		6
84 #define	REG_R10		5
85 #define	REG_R11		4
86 #define	REG_R12		3
87 #define	REG_R13		2
88 #define	REG_R14		1
89 #define	REG_R15		0
90 
91 /*
92  * The names and offsets defined here are specified by i386 ABI suppl.
93  */
94 
95 #define	GS		18
96 #define	SS		17	/* only stored on a privilege transition */
97 #define	UESP		16	/* only stored on a privilege transition */
98 #define	EFL		15
99 #define	CS		14
100 #define	EIP		13
101 #define	ERR		12
102 #define	TRAPNO		11
103 #define	EAX		10
104 #define	ECX		9
105 #define	EDX		8
106 #define	EBX		7
107 #define	ESP		6
108 #define	EBP		5
109 #define	ESI		4
110 #define	EDI		3
111 #define	DS		2
112 #define	ES		1
113 #define	FS		0
114 
115 #define REG_PC  EIP
116 #define REG_FP  EBP
117 #define REG_SP  UESP
118 #define REG_PS  EFL
119 #define REG_R0  EAX
120 #define REG_R1  EDX
121 
122 #ifdef	__cplusplus
123 }
124 #endif
125 
126 #endif	/* _REGSET_H */
127