Home | History | Annotate | Download | only in sparc
      1 /*
      2  * Copyright 1997 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 #ifndef CSH_SIGNAL_H
     16 #define CSH_SIGNAL_H
     17 
     18 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     19 
     20 /*
     21  * 4.3BSD signal compatibility header
     22  *
     23  */
     24 #define sigmask(m)	(m > 32 ? 0 : (1 << ((m)-1)))
     25 
     26 /*
     27  * 4.3BSD signal vector structure used in sigvec call.
     28  */
     29 struct  sigvec {
     30         void    (*sv_handler)();        /* signal handler */
     31         int     sv_mask;                /* signal mask to apply */
     32         int     sv_flags;               /* see signal options below */
     33 };
     34 
     35 #define SV_ONSTACK      0x0001  /* take signal on signal stack */
     36 #define SV_INTERRUPT    0x0002  /* do not restart system on signal return */
     37 #define SV_RESETHAND    0x0004  /* reset handler to SIG_DFL when signal taken */
     38 
     39 #define sv_onstack sv_flags
     40 
     41 /*
     42  * Machine dependent data structure
     43  */
     44 struct  sigcontext {
     45         int     sc_onstack;             /* sigstack state to restore */
     46         int     sc_mask;                /* signal mask to restore */
     47 #define MAXWINDOW       31              /* max usable windows in sparc */
     48 	long	sc_sp;			/* sp to restore */
     49 	long	sc_pc;			/* pc to retore */
     50 	long	sc_npc;                 /* next pc to restore */
     51 	long	sc_psr;                 /* psr to restore */
     52 	long	sc_g1;                  /* register that must be restored */
     53 	long	sc_o0;
     54 	long	sc_wbcnt;               /* number of outstanding windows */
     55 	long	*sc_spbuf[MAXWINDOW];   /* sp's for each wbuf */
     56 	long	sc_wbuf[MAXWINDOW][16]; /* outstanding window save buffer */
     57 };
     58 
     59 #define SI_DFLCODE	1
     60 
     61 #define BUS_HWERR	BUS_ADRERR	/* misc hardware error (e.g. timeout) */
     62 #define BUS_ALIGN	BUS_ADRALN	/* hardware alignment error */
     63 
     64 #define SEGV_NOMAP	SEGV_MAPERR	/* no mapping at the fault address */
     65 #define SEGV_PROT	SEGV_ACCERR	/* access exceeded protections */
     66 
     67 /*
     68  * The SEGV_CODE(code) will be SEGV_NOMAP, SEGV_PROT, or SEGV_OBJERR.
     69  * In the SEGV_OBJERR case, doing a SEGV_ERRNO(code) gives an errno value
     70  * reported by the underlying file object mapped at the fault address.
     71  */
     72 
     73 #define SIG_NOADDR	((char *)~0)
     74 
     75 #define	SEGV_MAKE_ERR(e) (((e) << 8) | SEGV_MAPERR)
     76 
     77 #endif	/* CSH_SIGNAL_H */
     78