signal.h revision 190623 
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 * 4. Neither the name of the University nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 *	@(#)signal.h	8.1 (Berkeley) 6/11/93
30 * $FreeBSD: head/sys/i386/include/signal.h 190623 2009-04-01 13:44:28Z kib $
31 */
32
33#ifndef _MACHINE_SIGNAL_H_
34#define	_MACHINE_SIGNAL_H_
35
36#include <sys/cdefs.h>
37#include <sys/_sigset.h>
38
39/*
40 * Machine-dependent signal definitions
41 */
42
43typedef int sig_atomic_t;
44
45#if __BSD_VISIBLE
46#include <machine/trap.h>	/* codes for SIGILL, SIGFPE */
47
48/*
49 * Only the kernel should need these old type definitions.
50 */
51#if defined(_KERNEL) && defined(COMPAT_43)
52/*
53 * Information pushed on stack when a signal is delivered.
54 * This is used by the kernel to restore state following
55 * execution of the signal handler.  It is also made available
56 * to the handler to allow it to restore state properly if
57 * a non-standard exit is performed.
58 */
59struct osigcontext {
60	int	sc_onstack;		/* sigstack state to restore */
61	osigset_t sc_mask;		/* signal mask to restore */
62	int	sc_esp;			/* machine state follows: */
63	int	sc_ebp;
64	int	sc_isp;
65	int	sc_eip;
66	int	sc_efl;
67	int	sc_es;
68	int	sc_ds;
69	int	sc_cs;
70	int	sc_ss;
71	int	sc_edi;
72	int	sc_esi;
73	int	sc_ebx;
74	int	sc_edx;
75	int	sc_ecx;
76	int	sc_eax;
77	int	sc_gs;
78	int	sc_fs;
79	int	sc_trapno;
80	int	sc_err;
81};
82#endif
83
84/*
85 * The sequence of the fields/registers in struct sigcontext should match
86 * those in mcontext_t.
87 */
88struct sigcontext {
89	struct __sigset sc_mask;	/* signal mask to restore */
90	int	sc_onstack;		/* sigstack state to restore */
91	int	sc_gs;			/* machine state (struct trapframe) */
92	int	sc_fs;
93	int	sc_es;
94	int	sc_ds;
95	int	sc_edi;
96	int	sc_esi;
97	int	sc_ebp;
98	int	sc_isp;
99	int	sc_ebx;
100	int	sc_edx;
101	int	sc_ecx;
102	int	sc_eax;
103	int	sc_trapno;
104	int	sc_err;
105	int	sc_eip;
106	int	sc_cs;
107	int	sc_efl;
108	int	sc_esp;
109	int	sc_ss;
110	int	sc_len;			/* sizeof(mcontext_t) */
111	/*
112	 * XXX - See <machine/ucontext.h> and <machine/npx.h> for
113	 *       the following fields.
114	 */
115	int	sc_fpformat;
116	int	sc_ownedfp;
117	int	sc_spare1[1];
118	int	sc_fpstate[128] __aligned(16);
119
120	int	sc_fsbase;
121	int	sc_gsbase;
122
123	int	sc_spare2[6];
124};
125
126#define	sc_sp		sc_esp
127#define	sc_fp		sc_ebp
128#define	sc_pc		sc_eip
129#define	sc_ps		sc_efl
130#define	sc_eflags	sc_efl
131
132#endif /* __BSD_VISIBLE */
133
134#endif /* !_MACHINE_SIGNAL_H_ */
135