1/*-
2 * Copyright (c) 2003 Peter Wemm.
3 * Copyright (c) 1990 The Regents of the University of California.
4 * All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * William Jolitz.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *	from: @(#)frame.h	5.2 (Berkeley) 1/18/91
34 */
35
36#ifndef _MACHINE_FRAME_H_
37#define _MACHINE_FRAME_H_ 1
38
39/*
40 * System stack frames.
41 */
42
43#if defined(__i386__) && !defined(__amd64__)
44/*
45 * Exception/Trap Stack Frame
46 */
47
48struct trapframe {
49	int	tf_fs;
50	int	tf_es;
51	int	tf_ds;
52	int	tf_edi;
53	int	tf_esi;
54	int	tf_ebp;
55	int	tf_isp;
56	int	tf_ebx;
57	int	tf_edx;
58	int	tf_ecx;
59	int	tf_eax;
60	int	tf_trapno;
61	/* below portion defined in 386 hardware */
62	int	tf_err;
63	int	tf_eip;
64	int	tf_cs;
65	int	tf_eflags;
66	/* below only when crossing rings (user to kernel) */
67	int	tf_esp;
68	int	tf_ss;
69};
70
71/* Superset of trap frame, for traps from virtual-8086 mode */
72
73struct trapframe_vm86 {
74	int	tf_fs;
75	int	tf_es;
76	int	tf_ds;
77	int	tf_edi;
78	int	tf_esi;
79	int	tf_ebp;
80	int	tf_isp;
81	int	tf_ebx;
82	int	tf_edx;
83	int	tf_ecx;
84	int	tf_eax;
85	int	tf_trapno;
86	/* below portion defined in 386 hardware */
87	int	tf_err;
88	int	tf_eip;
89	int	tf_cs;
90	int	tf_eflags;
91	/* below only when crossing rings (user (including vm86) to kernel) */
92	int	tf_esp;
93	int	tf_ss;
94	/* below only when crossing from vm86 mode to kernel */
95	int	tf_vm86_es;
96	int	tf_vm86_ds;
97	int	tf_vm86_fs;
98	int	tf_vm86_gs;
99};
100
101/*
102 * This alias for the MI TRAPF_USERMODE() should be used when we don't
103 * care about user mode itself, but need to know if a frame has stack
104 * registers.  The difference is only logical, but on i386 the logic
105 * for using TRAPF_USERMODE() is complicated by sometimes treating vm86
106 * bioscall mode (which is a special ring 3 user mode) as kernel mode.
107 */
108#define	TF_HAS_STACKREGS(tf)	TRAPF_USERMODE(tf)
109#endif /* __i386__ */
110
111#ifdef __amd64__
112/*
113 * Exception/Trap Stack Frame
114 *
115 * The ordering of this is specifically so that we can take first 6
116 * the syscall arguments directly from the beginning of the frame.
117 */
118
119struct trapframe {
120	register_t	tf_rdi;
121	register_t	tf_rsi;
122	register_t	tf_rdx;
123	register_t	tf_rcx;
124	register_t	tf_r8;
125	register_t	tf_r9;
126	register_t	tf_rax;
127	register_t	tf_rbx;
128	register_t	tf_rbp;
129	register_t	tf_r10;
130	register_t	tf_r11;
131	register_t	tf_r12;
132	register_t	tf_r13;
133	register_t	tf_r14;
134	register_t	tf_r15;
135	uint32_t	tf_trapno;
136	uint16_t	tf_fs;
137	uint16_t	tf_gs;
138	register_t	tf_addr;
139	uint32_t	tf_flags;
140	uint16_t	tf_es;
141	uint16_t	tf_ds;
142	/* below portion defined in hardware */
143	register_t	tf_err;
144	register_t	tf_rip;
145	register_t	tf_cs;
146	register_t	tf_rflags;
147	/* the amd64 frame always has the stack registers */
148	register_t	tf_rsp;
149	register_t	tf_ss;
150};
151
152#define	TF_HASSEGS	0x1
153#define	TF_HASBASES	0x2
154#define	TF_HASFPXSTATE	0x4
155#endif /* __amd64__ */
156
157#endif /* _MACHINE_FRAME_H_ */
158