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_ */