xref: /freebsd/sys/x86/include/signal.h (revision edf8578117e8844e02c0121147f45e4609b30680)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1986, 1989, 1991, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  * Copyright (c) 2003 Peter Wemm.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. Neither the name of the University nor the names of its contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  *	@(#)signal.h	8.1 (Berkeley) 6/11/93
33  */
34 
35 #ifndef _X86_SIGNAL_H
36 #define	_X86_SIGNAL_H 1
37 
38 /*
39  * Machine-dependent signal definitions
40  */
41 
42 #include <sys/cdefs.h>
43 #include <sys/_sigset.h>
44 
45 #ifdef __i386__
46 typedef int sig_atomic_t;
47 
48 #if __BSD_VISIBLE
49 struct sigcontext {
50 	struct __sigset sc_mask;	/* signal mask to restore */
51 	int	sc_onstack;		/* sigstack state to restore */
52 	int	sc_gs;			/* machine state (struct trapframe) */
53 	int	sc_fs;
54 	int	sc_es;
55 	int	sc_ds;
56 	int	sc_edi;
57 	int	sc_esi;
58 	int	sc_ebp;
59 	int	sc_isp;
60 	int	sc_ebx;
61 	int	sc_edx;
62 	int	sc_ecx;
63 	int	sc_eax;
64 	int	sc_trapno;
65 	int	sc_err;
66 	int	sc_eip;
67 	int	sc_cs;
68 	int	sc_efl;
69 	int	sc_esp;
70 	int	sc_ss;
71 	int	sc_len;			/* sizeof(mcontext_t) */
72 	/*
73 	 * See <machine/ucontext.h> and <machine/npx.h> for
74 	 * the following fields.
75 	 */
76 	int	sc_fpformat;
77 	int	sc_ownedfp;
78 	int	sc_flags;
79 	int	sc_fpstate[128] __aligned(16);
80 
81 	int	sc_fsbase;
82 	int	sc_gsbase;
83 
84 	int	sc_xfpustate;
85 	int	sc_xfpustate_len;
86 
87 	int	sc_spare2[4];
88 };
89 
90 #define	sc_sp		sc_esp
91 #define	sc_fp		sc_ebp
92 #define	sc_pc		sc_eip
93 #define	sc_ps		sc_efl
94 #define	sc_eflags	sc_efl
95 
96 #endif /* __BSD_VISIBLE */
97 #endif /* __i386__ */
98 
99 #ifdef __amd64__
100 typedef long sig_atomic_t;
101 
102 #if __BSD_VISIBLE
103 /*
104  * Information pushed on stack when a signal is delivered.
105  * This is used by the kernel to restore state following
106  * execution of the signal handler.  It is also made available
107  * to the handler to allow it to restore state properly if
108  * a non-standard exit is performed.
109  *
110  * The sequence of the fields/registers after sc_mask in struct
111  * sigcontext must match those in mcontext_t and struct trapframe.
112  */
113 struct sigcontext {
114 	struct __sigset sc_mask;	/* signal mask to restore */
115 	long	sc_onstack;		/* sigstack state to restore */
116 	long	sc_rdi;		/* machine state (struct trapframe) */
117 	long	sc_rsi;
118 	long	sc_rdx;
119 	long	sc_rcx;
120 	long	sc_r8;
121 	long	sc_r9;
122 	long	sc_rax;
123 	long	sc_rbx;
124 	long	sc_rbp;
125 	long	sc_r10;
126 	long	sc_r11;
127 	long	sc_r12;
128 	long	sc_r13;
129 	long	sc_r14;
130 	long	sc_r15;
131 	int	sc_trapno;
132 	short	sc_fs;
133 	short	sc_gs;
134 	long	sc_addr;
135 	int	sc_flags;
136 	short	sc_es;
137 	short	sc_ds;
138 	long	sc_err;
139 	long	sc_rip;
140 	long	sc_cs;
141 	long	sc_rflags;
142 	long	sc_rsp;
143 	long	sc_ss;
144 	long	sc_len;			/* sizeof(mcontext_t) */
145 	/*
146 	 * See <machine/ucontext.h> and <machine/fpu.h> for the following
147 	 * fields.
148 	 */
149 	long	sc_fpformat;
150 	long	sc_ownedfp;
151 	long	sc_fpstate[64] __aligned(16);
152 
153 	long	sc_fsbase;
154 	long	sc_gsbase;
155 
156 	long	sc_xfpustate;
157 	long	sc_xfpustate_len;
158 
159 	long	sc_spare[4];
160 };
161 #endif /* __BSD_VISIBLE */
162 #endif /* __amd64__ */
163 
164 #endif
165