1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2003 Peter Wemm
5 * Copyright (c) 1999 Marcel Moolenaar
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer
13 * in this position and unchanged.
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. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef _X86_UCONTEXT_H_
33#define _X86_UCONTEXT_H_
34
35#ifdef __i386__
36/* Keep _MC_* values similar to amd64 */
37#define _MC_HASSEGS 0x1
38#define _MC_HASBASES 0x2
39#define _MC_HASFPXSTATE 0x4
40#define _MC_FLAG_MASK (_MC_HASSEGS | _MC_HASBASES | _MC_HASFPXSTATE)
41
42typedef struct __mcontext {
43 /*
44 * The definition of mcontext_t must match the layout of
45 * struct sigcontext after the sc_mask member. This is so
46 * that we can support sigcontext and ucontext_t at the same
47 * time.
48 */
49 __register_t mc_onstack; /* XXX - sigcontext compat. */
50 __register_t mc_gs; /* machine state (struct trapframe) */
51 __register_t mc_fs;
52 __register_t mc_es;
53 __register_t mc_ds;
54 __register_t mc_edi;
55 __register_t mc_esi;
56 __register_t mc_ebp;
57 __register_t mc_isp;
58 __register_t mc_ebx;
59 __register_t mc_edx;
60 __register_t mc_ecx;
61 __register_t mc_eax;
62 __register_t mc_trapno;
63 __register_t mc_err;
64 __register_t mc_eip;
65 __register_t mc_cs;
66 __register_t mc_eflags;
67 __register_t mc_esp;
68 __register_t mc_ss;
69
70 int mc_len; /* sizeof(mcontext_t) */
71#define _MC_FPFMT_NODEV 0x10000 /* device not present or configured */
72#define _MC_FPFMT_387 0x10001
73#define _MC_FPFMT_XMM 0x10002
74 int mc_fpformat;
75#define _MC_FPOWNED_NONE 0x20000 /* FP state not used */
76#define _MC_FPOWNED_FPU 0x20001 /* FP state came from FPU */
77#define _MC_FPOWNED_PCB 0x20002 /* FP state came from PCB */
78 int mc_ownedfp;
79 __register_t mc_flags;
80 /*
81 * See <machine/npx.h> for the internals of mc_fpstate[].
82 */
83 int mc_fpstate[128] __aligned(16);
84
85 __register_t mc_fsbase;
86 __register_t mc_gsbase;
87
88 __register_t mc_xfpustate;
89 __register_t mc_xfpustate_len;
90
91 int mc_spare2[4];
92} mcontext_t;
93#endif /* __i386__ */
94
95#ifdef __amd64__
96/*
97 * mc_flags bits. Shall be in sync with TF_XXX.
98 */
99#define _MC_HASSEGS 0x1
100#define _MC_HASBASES 0x2
101#define _MC_HASFPXSTATE 0x4
102#define _MC_HASTLSBASE 0x8
103#define _MC_FLAG_MASK (_MC_HASSEGS | _MC_HASBASES | _MC_HASFPXSTATE | \
104 _MC_HASTLSBASE)
105
106typedef struct __mcontext {
107 /*
108 * The definition of mcontext_t must match the layout of
109 * struct sigcontext after the sc_mask member. This is so
110 * that we can support sigcontext and ucontext_t at the same
111 * time.
112 */
113 __register_t mc_onstack; /* XXX - sigcontext compat. */
114 __register_t mc_rdi; /* machine state (struct trapframe) */
115 __register_t mc_rsi;
116 __register_t mc_rdx;
117 __register_t mc_rcx;
118 __register_t mc_r8;
119 __register_t mc_r9;
120 __register_t mc_rax;
121 __register_t mc_rbx;
122 __register_t mc_rbp;
123 __register_t mc_r10;
124 __register_t mc_r11;
125 __register_t mc_r12;
126 __register_t mc_r13;
127 __register_t mc_r14;
128 __register_t mc_r15;
129 __uint32_t mc_trapno;
130 __uint16_t mc_fs;
131 __uint16_t mc_gs;
132 __register_t mc_addr;
133 __uint32_t mc_flags;
134 __uint16_t mc_es;
135 __uint16_t mc_ds;
136 __register_t mc_err;
137 __register_t mc_rip;
138 __register_t mc_cs;
139 __register_t mc_rflags;
140 __register_t mc_rsp;
141 __register_t mc_ss;
142
143 long mc_len; /* sizeof(mcontext_t) */
144
145#define _MC_FPFMT_NODEV 0x10000 /* device not present or configured */
146#define _MC_FPFMT_XMM 0x10002
147 long mc_fpformat;
148#define _MC_FPOWNED_NONE 0x20000 /* FP state not used */
149#define _MC_FPOWNED_FPU 0x20001 /* FP state came from FPU */
150#define _MC_FPOWNED_PCB 0x20002 /* FP state came from PCB */
151 long mc_ownedfp;
152 /*
153 * See <machine/fpu.h> for the internals of mc_fpstate[].
154 */
155 long mc_fpstate[64] __aligned(16);
156
157 __register_t mc_fsbase;
158 __register_t mc_gsbase;
159
160 __register_t mc_xfpustate;
161 __register_t mc_xfpustate_len;
162
163 __register_t mc_tlsbase;
164
165 long mc_spare[3];
166} mcontext_t;
167#endif /* __amd64__ */
168
169#endif /* !_X86_UCONTEXT_H_ */