include/asm-sparc/signal.h

   1 /* $Id: signal.h,v 1.35 1999/09/06 08:22:04 jj Exp $ */
   2 #ifndef _ASMSPARC_SIGNAL_H
   3 #define _ASMSPARC_SIGNAL_H
   4
   5 #include <asm/sigcontext.h>
   6
   7 #ifdef __KERNEL__
   8 #ifndef __ASSEMBLY__
   9 #include <linux/personality.h>
  10 #include <linux/types.h>
  11 #endif
  12 #endif
  13
  14 /* On the Sparc the signal handlers get passed a 'sub-signal' code
  15  * for certain signal types, which we document here.
  16  */
  17 #define SIGHUP           1
  18 #define SIGINT           2
  19 #define SIGQUIT          3
  20 #define SIGILL           4
  21 #define    SUBSIG_STACK       0
  22 #define    SUBSIG_ILLINST     2
  23 #define    SUBSIG_PRIVINST    3
  24 #define    SUBSIG_BADTRAP(t)  (0x80 + (t))
  25
  26 #define SIGTRAP          5
  27 #define SIGABRT          6
  28 #define SIGIOT           6
  29
  30 #define SIGEMT           7
  31 #define    SUBSIG_TAG    10
  32
  33 #define SIGFPE           8
  34 #define    SUBSIG_FPDISABLED     0x400
  35 #define    SUBSIG_FPERROR        0x404
  36 #define    SUBSIG_FPINTOVFL      0x001
  37 #define    SUBSIG_FPSTSIG        0x002
  38 #define    SUBSIG_IDIVZERO       0x014
  39 #define    SUBSIG_FPINEXACT      0x0c4
  40 #define    SUBSIG_FPDIVZERO      0x0c8
  41 #define    SUBSIG_FPUNFLOW       0x0cc
  42 #define    SUBSIG_FPOPERROR      0x0d0
  43 #define    SUBSIG_FPOVFLOW       0x0d4
  44
  45 #define SIGKILL          9
  46 #define SIGBUS          10
  47 #define    SUBSIG_BUSTIMEOUT    1
  48 #define    SUBSIG_ALIGNMENT     2
  49 #define    SUBSIG_MISCERROR     5
  50
  51 #define SIGSEGV         11
  52 #define    SUBSIG_NOMAPPING     3
  53 #define    SUBSIG_PROTECTION    4
  54 #define    SUBSIG_SEGERROR      5
  55
  56 #define SIGSYS          12
  57
  58 #define SIGPIPE         13
  59 #define SIGALRM         14
  60 #define SIGTERM         15
  61 #define SIGURG          16
  62
  63 /* SunOS values which deviate from the Linux/i386 ones */
  64 #define SIGSTOP         17
  65 #define SIGTSTP         18
  66 #define SIGCONT         19
  67 #define SIGCHLD         20
  68 #define SIGTTIN         21
  69 #define SIGTTOU         22
  70 #define SIGIO           23
  71 #define SIGPOLL         SIGIO   /* SysV name for SIGIO */
  72 #define SIGXCPU         24
  73 #define SIGXFSZ         25
  74 #define SIGVTALRM       26
  75 #define SIGPROF         27
  76 #define SIGWINCH        28
  77 #define SIGLOST         29
  78 #define SIGPWR          SIGLOST
  79 #define SIGUSR1         30
  80 #define SIGUSR2         31
  81
  82 /* Most things should be clean enough to redefine this at will, if care
  83  * is taken to make libc match.
  84  */
  85
  86 #define __OLD_NSIG      32
  87 #define __NEW_NSIG      64
  88 #define _NSIG_BPW       32
  89 #define _NSIG_WORDS     (__NEW_NSIG / _NSIG_BPW)
  90
  91 #define SIGRTMIN        32
  92 #define SIGRTMAX        (__NEW_NSIG - 1)
  93
  94 #if defined(__KERNEL__) || defined(__WANT_POSIX1B_SIGNALS__)
  95 #define _NSIG           __NEW_NSIG
  96 #define __new_sigset_t  sigset_t
  97 #define __new_sigaction sigaction
  98 #define __old_sigset_t  old_sigset_t
  99 #define __old_sigaction old_sigaction
 100 #else
 101 #define _NSIG           __OLD_NSIG
 102 #define __old_sigset_t  sigset_t
 103 #define __old_sigaction sigaction
 104 #endif
 105
 106 #ifndef __ASSEMBLY__
 107
 108 typedef unsigned long __old_sigset_t;
 109
 110 typedef struct {
 111         unsigned long   sig[_NSIG_WORDS];
 112 } __new_sigset_t;
 113
 114 /* A SunOS sigstack */
 115 struct sigstack {
 116         char *the_stack;
 117         int   cur_status;
 118 };
 119
 120 /* Sigvec flags */
 121 #define SV_SSTACK    1     /* This signal handler should use sig-stack */
 122 #define SV_INTR      2     /* Sig return should not restart system call */
 123 #define SV_RESET     4     /* Set handler to SIG_DFL upon taken signal */
 124 #define SV_IGNCHILD  8     /* Do not send SIGCHLD */
 125
 126 /*
 127  * sa_flags values: SA_STACK is not currently supported, but will allow the
 128  * usage of signal stacks by using the (now obsolete) sa_restorer field in
 129  * the sigaction structure as a stack pointer. This is now possible due to
 130  * the changes in signal handling. LBT 010493.
 131  * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
 132  * SA_RESTART flag to get restarting signals (which were the default long ago)
 133  * SA_SHIRQ flag is for shared interrupt support on PCI and EISA.
 134  */
 135 #define SA_NOCLDSTOP    SV_IGNCHILD
 136 #define SA_STACK        SV_SSTACK
 137 #define SA_ONSTACK      SV_SSTACK
 138 #define SA_RESTART      SV_INTR
 139 #define SA_ONESHOT      SV_RESET
 140 #define SA_INTERRUPT    0x10
 141 #define SA_NOMASK       0x20
 142 #define SA_SHIRQ        0x40
 143 #define SA_NOCLDWAIT    0x100   /* not supported yet */
 144 #define SA_SIGINFO      0x200
 145
 146 #define SIG_BLOCK          0x01 /* for blocking signals */
 147 #define SIG_UNBLOCK        0x02 /* for unblocking signals */
 148 #define SIG_SETMASK        0x04 /* for setting the signal mask */
 149
 150 /*
 151  * sigaltstack controls
 152  */
 153 #define SS_ONSTACK      1
 154 #define SS_DISABLE      2
 155
 156 #define MINSIGSTKSZ     4096
 157 #define SIGSTKSZ        16384
 158
 159 #ifdef __KERNEL__
 160 /*
 161  * These values of sa_flags are used only by the kernel as part of the
 162  * irq handling routines.
 163  *
 164  * SA_INTERRUPT is also used by the irq handling routines.
 165  *
 166  * DJHR
 167  * SA_STATIC_ALLOC is used for the SPARC system to indicate that this
 168  * interrupt handler's irq structure should be statically allocated
 169  * by the request_irq routine.
 170  * The alternative is that arch/sparc/kernel/irq.c has carnal knowledge
 171  * of interrupt usage and that sucks. Also without a flag like this
 172  * it may be possible for the free_irq routine to attempt to free
 173  * statically allocated data.. which is NOT GOOD.
 174  *
 175  */
 176 #define SA_PROBE SA_ONESHOT
 177 #define SA_SAMPLE_RANDOM SA_RESTART
 178 #define SA_STATIC_ALLOC         0x80
 179 #endif
 180
 181 /* Type of a signal handler.  */
 182 #ifdef __KERNEL__
 183 typedef void (*__sighandler_t)(int, int, struct sigcontext *, char *);
 184 #else
 185 typedef void (*__sighandler_t)(int);
 186 #endif
 187
 188 #define SIG_DFL ((__sighandler_t)0)     /* default signal handling */
 189 #define SIG_IGN ((__sighandler_t)1)     /* ignore signal */
 190 #define SIG_ERR ((__sighandler_t)-1)    /* error return from signal */
 191
 192 struct __new_sigaction {
 193         __sighandler_t  sa_handler;
 194         unsigned long   sa_flags;
 195         void            (*sa_restorer)(void);   /* Not used by Linux/SPARC */
 196         __new_sigset_t  sa_mask;
 197 };
 198
 199 #ifdef __KERNEL__
 200 struct k_sigaction {
 201         struct __new_sigaction  sa;
 202         void                    *ka_restorer;
 203 };
 204 #endif
 205
 206 struct __old_sigaction {
 207         __sighandler_t  sa_handler;
 208         __old_sigset_t  sa_mask;
 209         unsigned long   sa_flags;
 210         void            (*sa_restorer) (void);  /* not used by Linux/SPARC */
 211 };
 212
 213 typedef struct sigaltstack {
 214         void            *ss_sp;
 215         int             ss_flags;
 216         size_t          ss_size;
 217 } stack_t;
 218
 219 #endif /* !(__ASSEMBLY__) */
 220
 221 #endif /* !(_ASMSPARC_SIGNAL_H) */