sys/cpu/i386/include/signal.h

   1 /*
   2  * Copyright (c) 1986, 1989, 1991, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  *      @(#)signal.h    8.1 (Berkeley) 6/11/93
  34  * $FreeBSD: src/sys/i386/include/signal.h,v 1.12 1999/11/12 13:52:11 marcel Exp $
  35  * $DragonFly: src/sys/cpu/i386/include/signal.h,v 1.9 2007/01/13 21:15:55 dillon Exp $
  36  */
  37
  38 #ifndef _CPU_SIGNAL_H_
  39 #define _CPU_SIGNAL_H_
  40
  41 /*
  42  * Machine-dependent signal definitions
  43  */
  44
  45 typedef int sig_atomic_t;
  46
  47 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
  48
  49 /*
  50  * XXX temporarily use a <machine/bla.h> path instead of "bla.h" so the
  51  * XFree86-4-clients port, which uses -I-, builds.  Use of -I- should
  52  * be banned, or the option should be fixed to not screw up relative-path
  53  * includes.
  54  */
  55
  56 #ifndef _SYS_SIGNAL_H_
  57 #include <sys/signal.h>
  58 #endif
  59 #ifndef _MACHINE_TRAP_H_
  60 #include <machine/trap.h>       /* codes for SIGILL, SIGFPE */
  61 #endif
  62
  63 /*
  64  * Information pushed on stack when a signal is delivered.
  65  * This is used by the kernel to restore state following
  66  * execution of the signal handler.  It is also made available
  67  * to the handler to allow it to restore state properly if
  68  * a non-standard exit is performed.
  69  *
  70  * The sequence of the fields/registers in struct sigcontext should match
  71  * those in mcontext_t.
  72  */
  73 struct  sigcontext {
  74         sigset_t sc_mask;               /* signal mask to restore */
  75         int     sc_onstack;             /* sigstack state to restore */
  76         int     sc_gs;                  /* machine state (struct trapframe): */
  77         int     sc_fs;
  78         int     sc_es;
  79         int     sc_ds;
  80         int     sc_edi;
  81         int     sc_esi;
  82         int     sc_ebp;
  83         int     sc_isp;
  84         int     sc_ebx;
  85         int     sc_edx;
  86         int     sc_ecx;
  87         int     sc_eax;
  88         int     sc_xflags;
  89         int     sc_trapno;
  90         int     sc_err;
  91         int     sc_eip;
  92         int     sc_cs;
  93         int     sc_efl;
  94         int     sc_esp;
  95         int     sc_ss;
  96
  97         int     mc_len;
  98         int     mc_fpformat;
  99         int     mc_ownedfp;
 100
 101         /*
 102          * Full FPU state is 512 bytes.  Add another 16 bytes worth of spare.
 103          *
 104          * This field must be 16-byte aligned.
 105          */
 106         int     sc_fpregs[128];         /* machine state (FPU): */
 107         int     sc_spare[16];
 108 };
 109
 110 #define sc_sp           sc_esp
 111 #define sc_fp           sc_ebp
 112 #define sc_pc           sc_eip
 113 #define sc_ps           sc_efl
 114 #define sc_eflags       sc_efl
 115
 116 #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
 117
 118 #endif /* !_CPU_SIGNAL_H_ */