1 typedef struct mcontext mcontext_t;
2 typedef struct ucontext ucontext_t;
3 
4 extern	int		getcontext(ucontext_t*);
5 extern	void		setcontext(ucontext_t*);
6 extern	int		swapcontext(ucontext_t*, ucontext_t*);
7 extern	void		makecontext(ucontext_t*, void(*)(), int, ...);
8 
9 /*-
10  * Copyright (c) 1999 Marcel Moolenaar
11  * All rights reserved.
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
16  * 1. Redistributions of source code must retain the above copyright
17  *    notice, this list of conditions and the following disclaimer 
18  *    in this position and unchanged.
19  * 2. Redistributions in binary form must reproduce the above copyright
20  *    notice, this list of conditions and the following disclaimer in the
21  *    documentation and/or other materials provided with the distribution.
22  * 3. The name of the author may not be used to endorse or promote products
23  *    derived from this software without specific prior written permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
26  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
29  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
30  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35  *
36  * $FreeBSD: src/sys/sys/ucontext.h,v 1.4 1999/10/11 20:33:17 luoqi Exp $
37  */
38 
39 /* #include <machine/ucontext.h> */
40 
41 /*-
42  * Copyright (c) 1999 Marcel Moolenaar
43  * All rights reserved.
44  *
45  * Redistribution and use in source and binary forms, with or without
46  * modification, are permitted provided that the following conditions
47  * are met:
48  * 1. Redistributions of source code must retain the above copyright
49  *    notice, this list of conditions and the following disclaimer 
50  *    in this position and unchanged.
51  * 2. Redistributions in binary form must reproduce the above copyright
52  *    notice, this list of conditions and the following disclaimer in the
53  *    documentation and/or other materials provided with the distribution.
54  * 3. The name of the author may not be used to endorse or promote products
55  *    derived from this software without specific prior written permission.
56  *
57  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
58  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
59  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
60  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
61  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
62  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
63  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
64  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
65  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
66  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
67  *
68  * $FreeBSD: src/sys/i386/include/ucontext.h,v 1.4 1999/10/11 20:33:09 luoqi Exp $
69  */
70 
71 struct mcontext {
72 	/*
73 	 * The first 20 fields must match the definition of
74 	 * sigcontext. So that we can support sigcontext
75 	 * and ucontext_t at the same time.
76 	 */
77 	int	mc_onstack;		/* XXX - sigcontext compat. */
78 	int	mc_gs;
79 	int	mc_fs;
80 	int	mc_es;
81 	int	mc_ds;
82 	int	mc_edi;
83 	int	mc_esi;
84 	int	mc_ebp;
85 	int	mc_isp;
86 	int	mc_ebx;
87 	int	mc_edx;
88 	int	mc_ecx;
89 	int	mc_eax;
90 	int	mc_trapno;
91 	int	mc_err;
92 	int	mc_eip;
93 	int	mc_cs;
94 	int	mc_eflags;
95 	int	mc_esp;			/* machine state */
96 	int	mc_ss;
97 
98 	int	mc_fpregs[28];		/* env87 + fpacc87 + u_long */
99 	int	__spare__[17];
100 };
101 
102 struct ucontext {
103 	/*
104 	 * Keep the order of the first two fields. Also,
105 	 * keep them the first two fields in the structure.
106 	 * This way we can have a union with struct
107 	 * sigcontext and ucontext_t. This allows us to
108 	 * support them both at the same time.
109 	 * note: the union is not defined, though.
110 	 */
111 	sigset_t	uc_sigmask;
112 	mcontext_t	uc_mcontext;
113 
114 	struct __ucontext *uc_link;
115 	stack_t		uc_stack;
116 	int		__spare__[8];
117 };
118 
119