signal.h revision 105014 
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 105014 2002-10-13 00:31:46Z mike $
35 */
36
37#ifndef _MACHINE_SIGNAL_H_
38#define	_MACHINE_SIGNAL_H_
39
40#include <sys/cdefs.h>
41#include <sys/_sigset.h>
42
43/*
44 * Machine-dependent signal definitions
45 */
46
47typedef int sig_atomic_t;
48
49#if __XSI_VISIBLE
50/*
51 * Minimum signal stack size. The current signal frame
52 * for i386 is 408 bytes large.
53 */
54#define	MINSIGSTKSZ	(512 * 4)
55#endif
56
57#if __BSD_VISIBLE
58#include <machine/trap.h>	/* codes for SIGILL, SIGFPE */
59
60/*
61 * Only the kernel should need these old type definitions.
62 */
63#ifdef _KERNEL
64/*
65 * Information pushed on stack when a signal is delivered.
66 * This is used by the kernel to restore state following
67 * execution of the signal handler.  It is also made available
68 * to the handler to allow it to restore state properly if
69 * a non-standard exit is performed.
70 */
71typedef unsigned int osigset_t;
72
73struct osigcontext {
74	int	sc_onstack;		/* sigstack state to restore */
75	osigset_t sc_mask;		/* signal mask to restore */
76	int	sc_esp;			/* machine state follows: */
77	int	sc_ebp;
78	int	sc_isp;
79	int	sc_eip;
80	int	sc_efl;
81	int	sc_es;
82	int	sc_ds;
83	int	sc_cs;
84	int	sc_ss;
85	int	sc_edi;
86	int	sc_esi;
87	int	sc_ebx;
88	int	sc_edx;
89	int	sc_ecx;
90	int	sc_eax;
91	int	sc_gs;
92	int	sc_fs;
93	int	sc_trapno;
94	int	sc_err;
95};
96#endif
97
98/*
99 * The sequence of the fields/registers in struct sigcontext should match
100 * those in mcontext_t.
101 */
102struct sigcontext {
103	struct __sigset sc_mask;	/* signal mask to restore */
104	int	sc_onstack;		/* sigstack state to restore */
105	int	sc_gs;			/* machine state (struct trapframe): */
106	int	sc_fs;
107	int	sc_es;
108	int	sc_ds;
109	int	sc_edi;
110	int	sc_esi;
111	int	sc_ebp;
112	int	sc_isp;
113	int	sc_ebx;
114	int	sc_edx;
115	int	sc_ecx;
116	int	sc_eax;
117	int	sc_trapno;
118	int	sc_err;
119	int	sc_eip;
120	int	sc_cs;
121	int	sc_efl;
122	int	sc_esp;
123	int	sc_ss;
124	int	sc_len;			/* sizeof(struct mcontext_t) */
125	/*
126	 * XXX - See <machine/ucontext.h> and <machine/npx.h> for
127	 *       the following fields.
128	 */
129	int	sc_fpformat;
130	int	sc_ownedfp;
131	int	sc_spare1[1];
132	int	sc_fpregs[128];
133	int	sc_spare2[8];
134};
135
136#define	sc_sp		sc_esp
137#define	sc_fp		sc_ebp
138#define	sc_pc		sc_eip
139#define	sc_ps		sc_efl
140#define	sc_eflags	sc_efl
141
142#endif /* __BSD_VISIBLE */
143
144#endif /* !_MACHINE_SIGNAL_H_ */
145