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 * 4. 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 * $FreeBSD$
35 */
36
37 #ifndef _MACHINE_FRAME_H_
38 #define _MACHINE_FRAME_H_ 1
39
40 /*
41 * System stack frames.
42 */
43
44 #ifdef __i386__
45 /*
46 * Exception/Trap Stack Frame
47 */
48
49 struct trapframe {
50 int tf_fs;
51 int tf_es;
52 int tf_ds;
53 int tf_edi;
54 int tf_esi;
55 int tf_ebp;
56 int tf_isp;
57 int tf_ebx;
58 int tf_edx;
59 int tf_ecx;
60 int tf_eax;
61 int tf_trapno;
62 /* below portion defined in 386 hardware */
63 int tf_err;
64 int tf_eip;
65 int tf_cs;
66 int tf_eflags;
67 /* below only when crossing rings (user to kernel) */
68 int tf_esp;
69 int tf_ss;
70 };
71
72 /* Superset of trap frame, for traps from virtual-8086 mode */
73
74 struct trapframe_vm86 {
75 int tf_fs;
76 int tf_es;
77 int tf_ds;
78 int tf_edi;
79 int tf_esi;
80 int tf_ebp;
81 int tf_isp;
82 int tf_ebx;
83 int tf_edx;
84 int tf_ecx;
85 int tf_eax;
86 int tf_trapno;
87 /* below portion defined in 386 hardware */
88 int tf_err;
89 int tf_eip;
90 int tf_cs;
91 int tf_eflags;
92 /* below only when crossing rings (user (including vm86) to kernel) */
93 int tf_esp;
94 int tf_ss;
95 /* below only when crossing from vm86 mode to kernel */
96 int tf_vm86_es;
97 int tf_vm86_ds;
98 int tf_vm86_fs;
99 int tf_vm86_gs;
100 };
101
102 /*
103 * This alias for the MI TRAPF_USERMODE() should be used when we don't
104 * care about user mode itself, but need to know if a frame has stack
105 * registers. The difference is only logical, but on i386 the logic
106 * for using TRAPF_USERMODE() is complicated by sometimes treating vm86
107 * bioscall mode (which is a special ring 3 user mode) as kernel mode.
108 */
109 #define TF_HAS_STACKREGS(tf) TRAPF_USERMODE(tf)
110 #endif /* __i386__ */
111
112 #ifdef __amd64__
113 /*
114 * Exception/Trap Stack Frame
115 *
116 * The ordering of this is specifically so that we can take first 6
117 * the syscall arguments directly from the beginning of the frame.
118 */
119
120 struct trapframe {
121 register_t tf_rdi;
122 register_t tf_rsi;
123 register_t tf_rdx;
124 register_t tf_rcx;
125 register_t tf_r8;
126 register_t tf_r9;
127 register_t tf_rax;
128 register_t tf_rbx;
129 register_t tf_rbp;
130 register_t tf_r10;
131 register_t tf_r11;
132 register_t tf_r12;
133 register_t tf_r13;
134 register_t tf_r14;
135 register_t tf_r15;
136 uint32_t tf_trapno;
137 uint16_t tf_fs;
138 uint16_t tf_gs;
139 register_t tf_addr;
140 uint32_t tf_flags;
141 uint16_t tf_es;
142 uint16_t tf_ds;
143 /* below portion defined in hardware */
144 register_t tf_err;
145 register_t tf_rip;
146 register_t tf_cs;
147 register_t tf_rflags;
148 /* the amd64 frame always has the stack registers */
149 register_t tf_rsp;
150 register_t tf_ss;
151 };
152
153 #define TF_HASSEGS 0x1
154 #define TF_HASBASES 0x2
155 #define TF_HASFPXSTATE 0x4
156 #endif /* __amd64__ */
157
158 #endif /* _MACHINE_FRAME_H_ */
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