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: releng/6.2/sys/i386/include/signal.h 139790 2005-01-06 22:18:23Z imp $
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
43 typedef int sig_atomic_t;
44
45 #if __XSI_VISIBLE
46 /*
47 * Minimum signal stack size. The current signal frame
48 * for i386 is 408 bytes large.
49 */
50 #define MINSIGSTKSZ (512 * 4)
51 #endif
52
53 #if __BSD_VISIBLE
54 #include <machine/trap.h> /* codes for SIGILL, SIGFPE */
55
56 /*
57 * Only the kernel should need these old type definitions.
58 */
59 #if defined(_KERNEL) && defined(COMPAT_43)
60 /*
61 * Information pushed on stack when a signal is delivered.
62 * This is used by the kernel to restore state following
63 * execution of the signal handler. It is also made available
64 * to the handler to allow it to restore state properly if
65 * a non-standard exit is performed.
66 */
67 struct osigcontext {
68 int sc_onstack; /* sigstack state to restore */
69 osigset_t sc_mask; /* signal mask to restore */
70 int sc_esp; /* machine state follows: */
71 int sc_ebp;
72 int sc_isp;
73 int sc_eip;
74 int sc_efl;
75 int sc_es;
76 int sc_ds;
77 int sc_cs;
78 int sc_ss;
79 int sc_edi;
80 int sc_esi;
81 int sc_ebx;
82 int sc_edx;
83 int sc_ecx;
84 int sc_eax;
85 int sc_gs;
86 int sc_fs;
87 int sc_trapno;
88 int sc_err;
89 };
90 #endif
91
92 /*
93 * The sequence of the fields/registers in struct sigcontext should match
94 * those in mcontext_t.
95 */
96 struct sigcontext {
97 struct __sigset sc_mask; /* signal mask to restore */
98 int sc_onstack; /* sigstack state to restore */
99 int sc_gs; /* machine state (struct trapframe) */
100 int sc_fs;
101 int sc_es;
102 int sc_ds;
103 int sc_edi;
104 int sc_esi;
105 int sc_ebp;
106 int sc_isp;
107 int sc_ebx;
108 int sc_edx;
109 int sc_ecx;
110 int sc_eax;
111 int sc_trapno;
112 int sc_err;
113 int sc_eip;
114 int sc_cs;
115 int sc_efl;
116 int sc_esp;
117 int sc_ss;
118 int sc_len; /* sizeof(mcontext_t) */
119 /*
120 * XXX - See <machine/ucontext.h> and <machine/npx.h> for
121 * the following fields.
122 */
123 int sc_fpformat;
124 int sc_ownedfp;
125 int sc_spare1[1];
126 int sc_fpstate[128] __aligned(16);
127 int sc_spare2[8];
128 };
129
130 #define sc_sp sc_esp
131 #define sc_fp sc_ebp
132 #define sc_pc sc_eip
133 #define sc_ps sc_efl
134 #define sc_eflags sc_efl
135
136 #endif /* __BSD_VISIBLE */
137
138 #endif /* !_MACHINE_SIGNAL_H_ */
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