xref: /illumos-gate/usr/src/boot/sys/x86/include/signal.h (revision c686756220120076a07be0dcce54be698101a3d1)
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__)
49 typedef int sig_atomic_t;
50 
51 #if __BSD_VISIBLE
52 struct 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__
103 typedef 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  */
116 struct 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