sys/arch/hppa/include/signal.h

   1 /*      $NetBSD: signal.h,v 1.2.2.3 2004/09/21 13:16:25 skrll Exp $     */
   2
   3 /*      $OpenBSD: signal.h,v 1.1 1998/06/23 19:45:27 mickey Exp $       */
   4
   5 /*
   6  * Copyright (c) 1994, The University of Utah and
   7  * the Computer Systems Laboratory at the University of Utah (CSL).
   8  * All rights reserved.
   9  *
  10  * Permission to use, copy, modify and distribute this software is hereby
  11  * granted provided that (1) source code retains these copyright, permission,
  12  * and disclaimer notices, and (2) redistributions including binaries
  13  * reproduce the notices in supporting documentation, and (3) all advertising
  14  * materials mentioning features or use of this software display the following
  15  * acknowledgement: ``This product includes software developed by the
  16  * Computer Systems Laboratory at the University of Utah.''
  17  *
  18  * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
  19  * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
  20  * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  21  *
  22  * CSL requests users of this software to return to csl-dist@cs.utah.edu any
  23  * improvements that they make and grant CSL redistribution rights.
  24  *
  25  *      Utah $Hdr: signal.h 1.3 94/12/16$
  26  */
  27
  28 #ifndef _HPPA_SIGNAL_H__
  29 #define _HPPA_SIGNAL_H__
  30
  31 /*
  32  * Machine-dependent signal definitions
  33  */
  34
  35 #include <sys/featuretest.h>
  36
  37 typedef int sig_atomic_t;
  38
  39 #define __HAVE_SIGINFO
  40
  41 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
  42 #include <machine/trap.h>       /* codes for SIGILL, SIGFPE */
  43 #endif
  44
  45 /*
  46  * Information pushed on stack when a signal is delivered.
  47  * This is used by the kernel to restore state following
  48  * execution of the signal handler.  It is also made available
  49  * to the handler to allow it to restore state properly if
  50  * a non-standard exit is performed.
  51  */
  52 struct  sigcontext {
  53         int     sc_onstack;             /* sigstack state to restore */
  54         int     __sc_mask13;            /* signal mask to restore (old style) */
  55         int     sc_sp;                  /* sp to restore */
  56         int     sc_fp;                  /* fp to restore */
  57         int     sc_ap;                  /* ap to restore */
  58         int     sc_pcsqh;               /* pc space queue (head) to restore */
  59         int     sc_pcoqh;               /* pc offset queue (head) to restore */
  60         int     sc_pcsqt;               /* pc space queue (tail) to restore */
  61         int     sc_pcoqt;               /* pc offset queue (tail) to restore */
  62         int     sc_ps;                  /* psl to restore */
  63         sigset_t sc_mask;               /* signal mask to restore (new style) */
  64 };
  65
  66 #if defined(_KERNEL)
  67 #include <hppa/frame.h>
  68
  69 /*
  70  * Register state saved while kernel delivers a signal.
  71  */
  72 struct sigstate {
  73         int     ss_flags;               /* which of the following are valid */
  74         struct trapframe ss_frame;      /* original exception frame */
  75 };
  76
  77 #define SS_FPSTATE      0x01
  78 #define SS_USERREGS     0x02
  79
  80 /*
  81  * Stack frame layout when delivering a signal.
  82  */
  83 struct sigframe {
  84         struct sigcontext sf_sc;        /* actual context */
  85         struct sigstate sf_state;       /* state of the hardware */
  86         /*
  87          * Everything below here must match the calling convention.
  88          * Per that convention, sendsig must initialize very little;
  89          * only sf_psp, sf_clup, sf_sl, and sf_edp must be set.
  90          * Note that this layout matches the HPPA_FRAME_ macros
  91          * in frame.h.
  92          */
  93         u_int   sf_arg3;
  94         u_int   sf_arg2;
  95         u_int   sf_arg1;
  96         u_int   sf_arg0;
  97         u_int   sf_edp;
  98         u_int   sf_esr4;
  99         u_int   sf_erp;
 100         u_int   sf_crp;
 101         u_int   sf_sl;
 102         u_int   sf_clup;
 103         u_int   sf_ep;
 104         u_int   sf_psp;
 105 };
 106
 107 #endif /* _KERNEL */
 108
 109 #endif /* _HPPA_SIGNAL_H__ */