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signal.h revision 1.24 
      1 /*	$NetBSD: signal.h,v 1.24 2004/05/10 21:51:50 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 COMPAT_16
     46 #define SIGTRAMP_VALID(vers) ((unsigned)(vers) <= 2)
     47 #else
     48 #define SIGTRAMP_VALID(vers) ((vers) == 2)
     49 #endif
     50 #endif
     51 
     52 #if !defined(__ASSEMBLER__)
     53 
     54 
     55 /*
     56  * Machine-dependent signal definitions
     57  */
     58 
     59 typedef int sig_atomic_t;
     60 
     61 #if defined(_NETBSD_SOURCE)
     62 /*
     63  * Information pushed on stack when a signal is delivered.
     64  * This is used by the kernel to restore state following
     65  * execution of the signal handler.  It is also made available
     66  * to the handler to allow it to restore state properly if
     67  * a non-standard exit is performed.
     68  *
     69  * sizeof(sigcontext) = 45 * sizeof(int) + 35 * sizeof(mips_reg_t)
     70  */
     71 #if defined(__LIBC12_SOURCE__) || defined(_KERNEL)
     72 struct sigcontext13 {
     73 	int	sc_onstack;	/* sigstack state to restore */
     74 	int	sc_mask;	/* signal mask to restore (old style) */
     75 	mips_reg_t sc_pc;	/* pc at time of signal */
     76 	mips_reg_t sc_regs[32];	/* processor regs 0 to 31 */
     77 	mips_reg_t mullo, mulhi;/* mullo and mulhi registers... */
     78 	int	sc_fpused;	/* fp has been used */
     79 	int	sc_fpregs[33];	/* fp regs 0 to 31 and csr */
     80 	int	sc_fpc_eir;	/* floating point exception instruction reg */
     81 	int	sc_xxx[8];	/* XXX reserved */
     82 };
     83 #endif /* __LIBC12_SOURCE__ || _KERNEL */
     84 
     85 struct sigcontext {
     86 	int	sc_onstack;	/* sigstack state to restore */
     87 	int	__sc_mask13;	/* signal mask to restore (old style) */
     88 	mips_reg_t sc_pc;	/* pc at time of signal */
     89 	mips_reg_t sc_regs[32];	/* processor regs 0 to 31 */
     90 	mips_reg_t mullo, mulhi;/* mullo and mulhi registers... */
     91 	int	sc_fpused;	/* fp has been used */
     92 	int	sc_fpregs[33];	/* fp regs 0 to 31 and csr */
     93 	int	sc_fpc_eir;	/* floating point exception instruction reg */
     94 	int	sc_xxx[8];	/* XXX reserved */
     95 	sigset_t sc_mask;	/* signal mask to restore (new style) */
     96 };
     97 
     98 #endif	/* _NETBSD_SOURCE */
     99 
    100 #endif	/* !_LANGUAGE_ASSEMBLY */
    101 #if !defined(_KERNEL)
    102 /*
    103  * Hard code these to make people think twice about breaking compatibility.
    104  * These macros are generated independently for the kernel.
    105  */
    106 #if !defined(_MIPS_BSD_API) || _MIPS_BSD_API == _MIPS_BSD_API_LP32
    107 #define _OFFSETOF_SC_REGS	12
    108 #define _OFFSETOF_SC_FPREGS	152
    109 #define _OFFSETOF_SC_MASK	320
    110 #else
    111 #define _OFFSETOF_SC_REGS	16
    112 #define _OFFSETOF_SC_FPREGS	292
    113 #define _OFFSETOF_SC_MASK	460
    114 #endif
    115 #endif	/* !_KERNEL */
    116 #endif	/* !_MIPS_SIGNAL_H_ */
    117