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signal.h revision 1.25 
      1 /*	$NetBSD: signal.h,v 1.25 2005/01/20 21:14:18 drochner 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
     45 #ifdef _KERNEL_OPT
     46 #include "opt_compat_netbsd.h"
     47 #endif
     48 #ifdef COMPAT_16
     49 #define SIGTRAMP_VALID(vers) ((unsigned)(vers) <= 2)
     50 #else
     51 #define SIGTRAMP_VALID(vers) ((vers) == 2)
     52 #endif
     53 #endif
     54 
     55 #if !defined(__ASSEMBLER__)
     56 
     57 
     58 /*
     59  * Machine-dependent signal definitions
     60  */
     61 
     62 typedef int sig_atomic_t;
     63 
     64 /*
     65  * Information pushed on stack when a signal is delivered.
     66  * This is used by the kernel to restore state following
     67  * execution of the signal handler.  It is also made available
     68  * to the handler to allow it to restore state properly if
     69  * a non-standard exit is performed.
     70  *
     71  * sizeof(sigcontext) = 45 * sizeof(int) + 35 * sizeof(mips_reg_t)
     72  */
     73 #if defined(_KERNEL) && defined(COMPAT_13)
     74 struct sigcontext13 {
     75 	int	sc_onstack;	/* sigstack state to restore */
     76 	int	sc_mask;	/* signal mask to restore (old style) */
     77 	mips_reg_t sc_pc;	/* pc at time of signal */
     78 	mips_reg_t sc_regs[32];	/* processor regs 0 to 31 */
     79 	mips_reg_t mullo, mulhi;/* mullo and mulhi registers... */
     80 	int	sc_fpused;	/* fp has been used */
     81 	int	sc_fpregs[33];	/* fp regs 0 to 31 and csr */
     82 	int	sc_fpc_eir;	/* floating point exception instruction reg */
     83 	int	sc_xxx[8];	/* XXX reserved */
     84 };
     85 #endif /* _KERNEL && COMPAT_13 */
     86 
     87 #if defined(_LIBC) || (defined(_KERNEL) && (defined(COMPAT_16)))
     88 struct sigcontext {
     89 	int	sc_onstack;	/* sigstack state to restore */
     90 	int	__sc_mask13;	/* signal mask to restore (old style) */
     91 	mips_reg_t sc_pc;	/* pc at time of signal */
     92 	mips_reg_t sc_regs[32];	/* processor regs 0 to 31 */
     93 	mips_reg_t mullo, mulhi;/* mullo and mulhi registers... */
     94 	int	sc_fpused;	/* fp has been used */
     95 	int	sc_fpregs[33];	/* fp regs 0 to 31 and csr */
     96 	int	sc_fpc_eir;	/* floating point exception instruction reg */
     97 	int	sc_xxx[8];	/* XXX reserved */
     98 	sigset_t sc_mask;	/* signal mask to restore (new style) */
     99 };
    100 #endif /* _LIBC || _KERNEL */
    101 
    102 #endif	/* !_LANGUAGE_ASSEMBLY */
    103 #if defined(_LIBC)
    104 /*
    105  * Hard code these to make people think twice about breaking compatibility.
    106  * These macros are generated independently for the kernel.
    107  */
    108 #if !defined(_MIPS_BSD_API) || _MIPS_BSD_API == _MIPS_BSD_API_LP32
    109 #define _OFFSETOF_SC_REGS	12
    110 #define _OFFSETOF_SC_FPREGS	152
    111 #define _OFFSETOF_SC_MASK	320
    112 #else
    113 #define _OFFSETOF_SC_REGS	16
    114 #define _OFFSETOF_SC_FPREGS	292
    115 #define _OFFSETOF_SC_MASK	460
    116 #endif
    117 #endif	/* _LIBC */
    118 #endif	/* !_MIPS_SIGNAL_H_ */
    119