sys/arch/mips/include/signal.h

   1 /*      $NetBSD: signal.h,v 1.28 2008/11/19 18:35:59 ad 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
  56 typedef 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))
  68 struct 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(_LIBC) || (defined(_KERNEL) && (defined(COMPAT_16) || defined(COMPAT_ULTRIX)))
  82 /*
  83  * Only need an O32 version.
  84  */
  85 #define _SIGCONTEXT_DEFINE(_name, _reg_t, _fp_t) \
  86 struct sigcontext { \
  87         int     sc_onstack;     /* sigstack state to restore */ \
  88         int     __sc_mask13;    /* signal mask to restore (old style) */ \
  89         _reg_t  sc_pc;          /* pc at time of signal */ \
  90         _reg_t  sc_regs[32];    /* processor regs 0 to 31 */ \
  91         _reg_t  mullo, mulhi;   /* mullo and mulhi registers... */ \
  92         int     sc_fpused;      /* fp has been used */ \
  93         _fp_t   sc_fpregs[33];  /* fp regs 0 to 31 and csr */ \
  94         int     sc_fpc_eir;     /* floating point exception instruction reg */ \
  95         int     sc_xxx[8];      /* XXX reserved */ \
  96         sigset_t sc_mask;       /* signal mask to restore (new style) */ \
  97 }
  98
  99 /*
 100  * These will be identical in O32
 101  */
 102 #ifdef _KERNEL
 103 /*
 104  * We need this only compatibility.
 105  */
 106 _SIGCONTEXT_DEFINE(sigcontext, int, int);
 107 #endif
 108 #ifdef _LIBC
 109 _SIGCONTEXT_DEFINE(sigcontext, register_t, fpregister_t);
 110 #endif
 111
 112 #endif /* _LIBC || _KERNEL */
 113
 114 #endif  /* !_LANGUAGE_ASSEMBLY */
 115 #endif  /* !_MIPS_SIGNAL_H_ */