signal.h revision 68520 
1/*
2 * Copyright (c) 1986, 1989, 1991, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
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 *	@(#)signal.h	8.1 (Berkeley) 6/11/93
34 * $FreeBSD: head/sys/amd64/include/signal.h 68520 2000-11-09 08:25:48Z marcel $
35 */
36
37#ifndef _MACHINE_SIGNAL_H_
38#define	_MACHINE_SIGNAL_H_
39
40/*
41 * Machine-dependent signal definitions
42 */
43
44typedef int sig_atomic_t;
45
46#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
47
48/*
49 * Minimum signal stack size. The current signal frame
50 * for i386 is 408 bytes large.
51 */
52#define	MINSIGSTKSZ	(512 * 4)
53
54#include <machine/trap.h>	/* codes for SIGILL, SIGFPE */
55
56/*
57 * Information pushed on stack when a signal is delivered.
58 * This is used by the kernel to restore state following
59 * execution of the signal handler.  It is also made available
60 * to the handler to allow it to restore state properly if
61 * a non-standard exit is performed.
62 */
63typedef unsigned int osigset_t;
64
65struct	osigcontext {
66	int	sc_onstack;		/* sigstack state to restore */
67	osigset_t sc_mask;		/* signal mask to restore */
68	int	sc_esp;			/* machine state follows: */
69	int	sc_ebp;
70	int	sc_isp;
71	int	sc_eip;
72	int	sc_efl;
73	int	sc_es;
74	int	sc_ds;
75	int	sc_cs;
76	int	sc_ss;
77	int	sc_edi;
78	int	sc_esi;
79	int	sc_ebx;
80	int	sc_edx;
81	int	sc_ecx;
82	int	sc_eax;
83	int	sc_gs;
84	int	sc_fs;
85	int	sc_trapno;
86	int	sc_err;
87};
88
89/*
90 * The sequence of the fields/registers in struct sigcontext should match
91 * those in mcontext_t.
92 */
93struct	sigcontext {
94	sigset_t sc_mask;		/* signal mask to restore */
95	int	sc_onstack;		/* sigstack state to restore */
96	int	sc_gs;			/* machine state (struct trapframe): */
97	int	sc_fs;
98	int	sc_es;
99	int	sc_ds;
100	int	sc_edi;
101	int	sc_esi;
102	int	sc_ebp;
103	int	sc_isp;
104	int	sc_ebx;
105	int	sc_edx;
106	int	sc_ecx;
107	int	sc_eax;
108	int	sc_trapno;
109	int	sc_err;
110	int	sc_eip;
111	int	sc_cs;
112	int	sc_efl;
113	int	sc_esp;
114	int	sc_ss;
115	/*
116	 * XXX FPU state is 27 * 4 bytes h/w, 1 * 4 bytes s/w (probably not
117	 * needed here), or that + 16 * 4 bytes for emulators (probably all
118	 * needed here).  The "spare" bytes are mostly not spare.
119	 */
120	int	sc_fpregs[28];		/* machine state (FPU): */
121	int	sc_spare[17];
122};
123
124#define	sc_sp		sc_esp
125#define	sc_fp		sc_ebp
126#define	sc_pc		sc_eip
127#define	sc_ps		sc_efl
128#define	sc_eflags	sc_efl
129
130#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
131
132#endif /* !_MACHINE_SIGNAL_H_ */
133