usr/src/cmd/csh/i386/signal.h

   1 /*
   2  * Copyright 1996 Sun Microsystems, Inc.  All rights reserved.
   3  * Use is subject to license terms.
   4  */
   5
   6 /*      Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T     */
   7 /*        All Rights Reserved   */
   8
   9 /*
  10  * Copyright (c) 1980 Regents of the University of California.
  11  * All rights reserved. The Berkeley Software License Agreement
  12  * specifies the terms and conditions for redistribution.
  13  */
  14
  15
  16 #ifndef CSH_SIGNAL_H
  17 #define CSH_SIGNAL_H
  18
  19 #pragma ident   "%Z%%M% %I%     %E% SMI"
  20
  21 /*
  22  * 4.3BSD signal compatibility header
  23  *
  24  */
  25 #define sigmask(m)      (m > 32 ? 0 : (1 << ((m)-1)))
  26
  27 /*
  28  * 4.3BSD signal vector structure used in sigvec call.
  29  */
  30 struct  sigvec {
  31         void    (*sv_handler)();        /* signal handler */
  32         int     sv_mask;                /* signal mask to apply */
  33         int     sv_flags;               /* see signal options below */
  34 };
  35
  36 #define SV_ONSTACK      0x0001  /* take signal on signal stack */
  37 #define SV_INTERRUPT    0x0002  /* do not restart system on signal return */
  38 #define SV_RESETHAND    0x0004  /* reset handler to SIG_DFL when signal taken */
  39
  40 #define sv_onstack sv_flags
  41
  42 /*
  43  * Machine dependent deta structure
  44  */
  45 struct  sigcontext {
  46         int     sc_onstack;             /* sigstack state to restore */
  47         int     sc_mask;                /* signal mask to restore */
  48         int     sc_sp;                  /* sp to restore */
  49         int     sc_pc;                  /* pc to retore */
  50         int     sc_ps;                  /* psl to restore */
  51         int     sc_eax;                 /* eax to restore */
  52         int     sc_edx;                 /* edx to restore */
  53 };
  54
  55 #define SI_DFLCODE      1
  56
  57 #define BUS_HWERR       BUS_ADRERR      /* misc hardware error (e.g. timeout) */
  58 #define BUS_ALIGN       BUS_ADRALN      /* hardware alignment error */
  59
  60 #define SEGV_NOMAP      SEGV_MAPERR     /* no mapping at the fault address */
  61 #define SEGV_PROT       SEGV_ACCERR     /* access exceeded protections */
  62
  63 /*
  64  * The SEGV_CODE(code) will be SEGV_NOMAP, SEGV_PROT, or SEGV_OBJERR.
  65  * In the SEGV_OBJERR case, doing a SEGV_ERRNO(code) gives an errno value
  66  * reported by the underlying file object mapped at the fault address.
  67  */
  68
  69 #define SIG_NOADDR      ((char *)~0)
  70
  71 #define SEGV_MAKE_ERR(e) (((e) << 8) | SEGV_MAPERR)
  72
  73 #endif  /* CSH_SIGNAL_H */