1/* $NetBSD: signal.h,v 1.33 2021/10/30 14:05:40 thorpej Exp $ */
2
3/*
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Ralph Campbell.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)signal.h 8.1 (Berkeley) 6/10/93
35 */
36
37#ifndef _MIPS_SIGNAL_H_
38#define _MIPS_SIGNAL_H_
39
40#include <sys/featuretest.h>
41
42#include <machine/cdefs.h> /* for API selection */
43
44#ifdef _KERNEL_OPT
45#include "opt_compat_netbsd.h"
46#include "opt_compat_ultrix.h"
47#endif
48
49#if !defined(__ASSEMBLER__)
50
51
52/*
53 * Machine-dependent signal definitions
54 */
55
56typedef int sig_atomic_t;
57
58/*
59 * Information pushed on stack when a signal is delivered.
60 * This is used by the kernel to restore state following
61 * execution of the signal handler. It is also made available
62 * to the handler to allow it to restore state properly if
63 * a non-standard exit is performed.
64 *
65 * sizeof(sigcontext) = 45 * sizeof(int) + 35 * sizeof(mips_reg_t)
66 */
67#if defined(_KERNEL) && (defined(COMPAT_13) || defined(COMPAT_ULTRIX))
68struct sigcontext13 {
69 int sc_onstack; /* sigstack state to restore */
70 int sc_mask; /* signal mask to restore (old style) */
71 int sc_pc; /* pc at time of signal */
72 int sc_regs[32]; /* processor regs 0 to 31 */
73 int mullo, mulhi; /* mullo and mulhi registers... */
74 int sc_fpused; /* fp has been used */
75 int sc_fpregs[33]; /* fp regs 0 to 31 and csr */
76 int sc_fpc_eir; /* floating point exception instruction reg */
77 int sc_xxx[8]; /* XXX reserved */
78};
79#endif /* _KERNEL && COMPAT_13 */
80
81#if defined(_KERNEL) || defined(__mips_o32)
82#define __HAVE_STRUCT_SIGCONTEXT
83#endif
84
85#if defined(_NETBSD_SOURCE)
86#include <sys/sigtypes.h>
87/*
88 * Only need an O32 version.
89 */
90#define _SIGCONTEXT_DEFINE(_name, _reg_t, _fp_t) \
91struct sigcontext { \
92 int sc_onstack; /* sigstack state to restore */ \
93 int __sc_mask13; /* signal mask to restore (old style) */ \
94 _reg_t sc_pc; /* pc at time of signal */ \
95 _reg_t sc_regs[32]; /* processor regs 0 to 31 */ \
96 _reg_t mullo, mulhi; /* mullo and mulhi registers... */ \
97 int sc_fpused; /* fp has been used */ \
98 _fp_t sc_fpregs[33]; /* fp regs 0 to 31 and csr */ \
99 int sc_fpc_eir; /* floating point exception instruction reg */ \
100 int sc_xxx[8]; /* XXX reserved */ \
101 sigset_t sc_mask; /* signal mask to restore (new style) */ \
102}
103
104/*
105 * The only binaries that used sigcontext used the O32 ABI. The kernel
106 * needs this for 32-bit compatibility, and O32 ABI user-space needs this
107 * natively.
108 */
109#if defined(_KERNEL)
110_SIGCONTEXT_DEFINE(sigcontext, int, int);
111#elif defined(__mips_o32) || defined(_LIBC)
112_SIGCONTEXT_DEFINE(sigcontext, __register_t, __fpregister_t);
113#endif
114
115#endif /* _NETBSD_SOURCE */
116
117#endif /* !_LANGUAGE_ASSEMBLY */
118#endif /* !_MIPS_SIGNAL_H_ */