1/*-
2 * Copyright (c) 1986, 1989, 1991, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 * Copyright (c) 2003 Peter Wemm.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 4. Neither the name of the University nor the names of its contributors
15 *    may be used to endorse or promote products derived from this software
16 *    without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 *	@(#)signal.h	8.1 (Berkeley) 6/11/93
31 * $FreeBSD$
32 */
33
34#ifndef _X86_SIGNAL_H
35#define	_X86_SIGNAL_H 1
36
37/*
38 * Machine-dependent signal definitions
39 */
40
41#include <sys/cdefs.h>
42#include <sys/_sigset.h>
43
44#if __BSD_VISIBLE
45#include <machine/trap.h>	/* codes for SIGILL, SIGFPE */
46#endif
47
48#if defined(__i386__) && !defined(__amd64__)
49typedef int sig_atomic_t;
50
51#if __BSD_VISIBLE
52struct sigcontext {
53	struct __sigset sc_mask;	/* signal mask to restore */
54	int	sc_onstack;		/* sigstack state to restore */
55	int	sc_gs;			/* machine state (struct trapframe) */
56	int	sc_fs;
57	int	sc_es;
58	int	sc_ds;
59	int	sc_edi;
60	int	sc_esi;
61	int	sc_ebp;
62	int	sc_isp;
63	int	sc_ebx;
64	int	sc_edx;
65	int	sc_ecx;
66	int	sc_eax;
67	int	sc_trapno;
68	int	sc_err;
69	int	sc_eip;
70	int	sc_cs;
71	int	sc_efl;
72	int	sc_esp;
73	int	sc_ss;
74	int	sc_len;			/* sizeof(mcontext_t) */
75	/*
76	 * See <machine/ucontext.h> and <machine/npx.h> for
77	 * the following fields.
78	 */
79	int	sc_fpformat;
80	int	sc_ownedfp;
81	int	sc_flags;
82	int	sc_fpstate[128] __aligned(16);
83
84	int	sc_fsbase;
85	int	sc_gsbase;
86
87	int	sc_xfpustate;
88	int	sc_xfpustate_len;
89
90	int	sc_spare2[4];
91};
92
93#define	sc_sp		sc_esp
94#define	sc_fp		sc_ebp
95#define	sc_pc		sc_eip
96#define	sc_ps		sc_efl
97#define	sc_eflags	sc_efl
98
99#endif /* __BSD_VISIBLE */
100#endif /* __i386__ */
101
102#ifdef __amd64__
103typedef long sig_atomic_t;
104
105#if __BSD_VISIBLE
106/*
107 * Information pushed on stack when a signal is delivered.
108 * This is used by the kernel to restore state following
109 * execution of the signal handler.  It is also made available
110 * to the handler to allow it to restore state properly if
111 * a non-standard exit is performed.
112 *
113 * The sequence of the fields/registers after sc_mask in struct
114 * sigcontext must match those in mcontext_t and struct trapframe.
115 */
116struct sigcontext {
117	struct __sigset sc_mask;	/* signal mask to restore */
118	long	sc_onstack;		/* sigstack state to restore */
119	long	sc_rdi;		/* machine state (struct trapframe) */
120	long	sc_rsi;
121	long	sc_rdx;
122	long	sc_rcx;
123	long	sc_r8;
124	long	sc_r9;
125	long	sc_rax;
126	long	sc_rbx;
127	long	sc_rbp;
128	long	sc_r10;
129	long	sc_r11;
130	long	sc_r12;
131	long	sc_r13;
132	long	sc_r14;
133	long	sc_r15;
134	int	sc_trapno;
135	short	sc_fs;
136	short	sc_gs;
137	long	sc_addr;
138	int	sc_flags;
139	short	sc_es;
140	short	sc_ds;
141	long	sc_err;
142	long	sc_rip;
143	long	sc_cs;
144	long	sc_rflags;
145	long	sc_rsp;
146	long	sc_ss;
147	long	sc_len;			/* sizeof(mcontext_t) */
148	/*
149	 * See <machine/ucontext.h> and <machine/fpu.h> for the following
150	 * fields.
151	 */
152	long	sc_fpformat;
153	long	sc_ownedfp;
154	long	sc_fpstate[64] __aligned(16);
155
156	long	sc_fsbase;
157	long	sc_gsbase;
158
159	long	sc_xfpustate;
160	long	sc_xfpustate_len;
161
162	long	sc_spare[4];
163};
164#endif /* __BSD_VISIBLE */
165#endif /* __amd64__ */
166
167#endif
168