sys/arch/i386/include/signal.h

   1 /*      $NetBSD: signal.h,v 1.29 2008/11/19 18:35:59 ad Exp $   */
   2
   3 /*
   4  * Copyright (c) 1982, 1986, 1989, 1991 Regents of the University of California.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  *      @(#)signal.h    7.16 (Berkeley) 3/17/91
  32  */
  33
  34 #ifndef _I386_SIGNAL_H_
  35 #define _I386_SIGNAL_H_
  36
  37 #include <sys/featuretest.h>
  38
  39 #if defined(__minix) && (defined(_LIBMINC) || ! defined(_STANDALONE))
  40 #include <machine/fpu.h>
  41 #endif /* defined(__minix) ... */
  42
  43 typedef int sig_atomic_t;
  44
  45 #if defined(_NETBSD_SOURCE)
  46 /*
  47  * Get the "code" values
  48  */
  49 #include <machine/trap.h>
  50
  51 #if defined(_KERNEL) || defined(__minix)
  52 /*
  53  * Information pushed on stack when a signal is delivered.
  54  * This is used by the kernel to restore state following
  55  * execution of the signal handler.  It is also made available
  56  * to the handler to allow it to restore state properly if
  57  * a non-standard exit is performed.
  58  */
  59 struct sigcontext13 {
  60         int     sc_gs;
  61         int     sc_fs;
  62         int     sc_es;
  63         int     sc_ds;
  64         int     sc_edi;
  65         int     sc_esi;
  66         int     sc_ebp;
  67         int     sc_ebx;
  68         int     sc_edx;
  69         int     sc_ecx;
  70         int     sc_eax;
  71         /* XXX */
  72         int     sc_eip;
  73         int     sc_cs;
  74         int     sc_eflags;
  75         int     sc_esp;
  76         int     sc_ss;
  77
  78         int     sc_onstack;             /* sigstack state to restore */
  79         int     sc_mask;                /* signal mask to restore (old style) */
  80
  81         int     sc_trapno;              /* XXX should be above */
  82         int     sc_err;
  83 };
  84
  85 struct sigcontext {
  86         int     sc_gs;
  87         int     sc_fs;
  88         int     sc_es;
  89         int     sc_ds;
  90         int     sc_edi;
  91         int     sc_esi;
  92         int     sc_ebp;
  93         int     sc_ebx;
  94         int     sc_edx;
  95         int     sc_ecx;
  96         int     sc_eax;
  97         /* XXX */
  98         int     sc_eip;
  99         int     sc_cs;
 100         int     sc_eflags;
 101         int     sc_esp;
 102         int     sc_ss;
 103
 104         int     sc_onstack;             /* sigstack state to restore */
 105         int     __sc_mask13;            /* signal mask to restore (old style) */
 106
 107         int     sc_trapno;              /* XXX should be above */
 108         int     sc_err;
 109
 110         sigset_t sc_mask;               /* signal mask to restore (new style) */
 111 #if defined(__minix) && (defined(_LIBMINC) || ! defined(_STANDALONE))
 112         union fpu_state_u sc_fpu_state;
 113         int trap_style;         /* KTS_* method of entering kernel */
 114         int sc_flags;                   /* MF_FPU_INITIALIZED if fpu state valid */
 115 #define SC_MAGIC 0xc0ffee1
 116         int sc_magic;
 117 #endif /* defined(__minix) ... */
 118 };
 119 #endif /* _KERNEL */
 120
 121 #if defined(__minix) && (defined(_LIBMINC) || ! defined(_STANDALONE))
 122 __BEGIN_DECLS
 123 int sigreturn(struct sigcontext *_scp);
 124 __END_DECLS
 125 #endif /* defined(__minix) */
 126
 127 #endif  /* _NETBSD_SOURCE */
 128 #endif  /* !_I386_SIGNAL_H_ */