sys/cpu/amd64/include/sigframe.h

   1 /*-
   2  * Copyright (c) 1999 Marcel Moolenaar
   3  * 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  *    in this position and unchanged.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * $FreeBSD: src/sys/i386/include/sigframe.h,v 1.5 1999/12/04 10:40:24 marcel Exp $
  29  * $DragonFly: src/sys/cpu/amd64/include/sigframe.h,v 1.1 2007/09/23 04:29:30 yanyh Exp $
  30  */
  31
  32 #ifndef _CPU_SIGFRAME_H_
  33 #define _CPU_SIGFRAME_H_
  34
  35 /*
  36  * Signal frames, arguments passed to application signal handlers.
  37  */
  38
  39 struct sigframe {
  40         /*
  41          * The first four members may be used by applications.
  42          *
  43          * NOTE: The 4th argument is undocumented, ill commented
  44          * on and seems to be somewhat BSD "standard".  Handlers
  45          * installed with sigvec may be using it.
  46          */
  47         register_t      sf_signum;
  48         register_t      sf_siginfo;     /* code or pointer to sf_si */
  49         register_t      sf_ucontext;    /* points to sf_uc */
  50         register_t      sf_addr;        /* undocumented 4th arg */
  51
  52         union {
  53                 __siginfohandler_t      *sf_action;
  54                 __sighandler_t          *sf_handler;
  55         } sf_ahu;
  56         ucontext_t      sf_uc;          /* = *sf_ucontext */
  57         siginfo_t       sf_si;          /* = *sf_siginfo (SA_SIGINFO case) */
  58 };
  59
  60 #endif /* !_CPU_SIGFRAME_H_ */