1 #define	setcontext(u)	setmcontext(&(u)->uc_mcontext)
2 #define	getcontext(u)	getmcontext(&(u)->uc_mcontext)
3 typedef struct mcontext mcontext_t;
4 typedef struct ucontext ucontext_t;
5 
6 extern	int		swapcontext(ucontext_t*, ucontext_t*);
7 extern	void		makecontext(ucontext_t*, void(*)(), int, ...);
8 extern	int		getmcontext(mcontext_t*);
9 extern	void		setmcontext(mcontext_t*);
10 
11 /*-
12  * Copyright (c) 1999 Marcel Moolenaar
13  * All rights reserved.
14  *
15  * Redistribution and use in source and binary forms, with or without
16  * modification, are permitted provided that the following conditions
17  * are met:
18  * 1. Redistributions of source code must retain the above copyright
19  *    notice, this list of conditions and the following disclaimer 
20  *    in this position and unchanged.
21  * 2. Redistributions in binary form must reproduce the above copyright
22  *    notice, this list of conditions and the following disclaimer in the
23  *    documentation and/or other materials provided with the distribution.
24  * 3. The name of the author may not be used to endorse or promote products
25  *    derived from this software without specific prior written permission.
26  *
27  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
28  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
29  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
30  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
31  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
32  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
36  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37  *
38  * $FreeBSD: src/sys/sys/ucontext.h,v 1.4 1999/10/11 20:33:17 luoqi Exp $
39  */
40 
41 /* #include <machine/ucontext.h> */
42 
43 /*-
44  * Copyright (c) 1999 Marcel Moolenaar
45  * All rights reserved.
46  *
47  * Redistribution and use in source and binary forms, with or without
48  * modification, are permitted provided that the following conditions
49  * are met:
50  * 1. Redistributions of source code must retain the above copyright
51  *    notice, this list of conditions and the following disclaimer 
52  *    in this position and unchanged.
53  * 2. Redistributions in binary form must reproduce the above copyright
54  *    notice, this list of conditions and the following disclaimer in the
55  *    documentation and/or other materials provided with the distribution.
56  * 3. The name of the author may not be used to endorse or promote products
57  *    derived from this software without specific prior written permission.
58  *
59  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
60  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
61  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
62  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
63  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
64  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
65  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
66  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
67  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
68  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
69  *
70  * $FreeBSD: src/sys/i386/include/ucontext.h,v 1.4 1999/10/11 20:33:09 luoqi Exp $
71  */
72 
73 struct mcontext {
74 	/*
75 	 * The first 20 fields must match the definition of
76 	 * sigcontext. So that we can support sigcontext
77 	 * and ucontext_t at the same time.
78 	 */
79 	int	mc_onstack;		/* XXX - sigcontext compat. */
80 	int	mc_gs;
81 	int	mc_fs;
82 	int	mc_es;
83 	int	mc_ds;
84 	int	mc_edi;
85 	int	mc_esi;
86 	int	mc_ebp;
87 	int	mc_isp;
88 	int	mc_ebx;
89 	int	mc_edx;
90 	int	mc_ecx;
91 	int	mc_eax;
92 	int	mc_trapno;
93 	int	mc_err;
94 	int	mc_eip;
95 	int	mc_cs;
96 	int	mc_eflags;
97 	int	mc_esp;			/* machine state */
98 	int	mc_ss;
99 
100 	int	mc_fpregs[28];		/* env87 + fpacc87 + u_long */
101 	int	__spare__[17];
102 };
103 
104 struct ucontext {
105 	/*
106 	 * Keep the order of the first two fields. Also,
107 	 * keep them the first two fields in the structure.
108 	 * This way we can have a union with struct
109 	 * sigcontext and ucontext_t. This allows us to
110 	 * support them both at the same time.
111 	 * note: the union is not defined, though.
112 	 */
113 	sigset_t	uc_sigmask;
114 	mcontext_t	uc_mcontext;
115 
116 	struct __ucontext *uc_link;
117 	stack_t		uc_stack;
118 	int		__spare__[8];
119 };
120 
121