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 #include <linux/compiler.h>
   7
   8 #ifdef __KERNEL__
   9 #ifndef __ASSEMBLY__
  10 #include <linux/personality.h>
  11 #include <linux/types.h>
  12 #endif
  13 #endif
  14
  15 /* On the Sparc the signal handlers get passed a 'sub-signal' code
  16  * for certain signal types, which we document here.
  17  */
  18 #define SIGHUP           1
  19 #define SIGINT           2
  20 #define SIGQUIT          3
  21 #define SIGILL           4
  22 #define    SUBSIG_STACK       0
  23 #define    SUBSIG_ILLINST     2
  24 #define    SUBSIG_PRIVINST    3
  25 #define    SUBSIG_BADTRAP(t)  (0x80 + (t))
  26
  27 #define SIGTRAP          5
  28 #define SIGABRT          6
  29 #define SIGIOT           6
  30
  31 #define SIGEMT           7
  32 #define    SUBSIG_TAG    10
  33
  34 #define SIGFPE           8
  35 #define    SUBSIG_FPDISABLED     0x400
  36 #define    SUBSIG_FPERROR        0x404
  37 #define    SUBSIG_FPINTOVFL      0x001
  38 #define    SUBSIG_FPSTSIG        0x002
  39 #define    SUBSIG_IDIVZERO       0x014
  40 #define    SUBSIG_FPINEXACT      0x0c4
  41 #define    SUBSIG_FPDIVZERO      0x0c8
  42 #define    SUBSIG_FPUNFLOW       0x0cc
  43 #define    SUBSIG_FPOPERROR      0x0d0
  44 #define    SUBSIG_FPOVFLOW       0x0d4
  45
  46 #define SIGKILL          9
  47 #define SIGBUS          10
  48 #define    SUBSIG_BUSTIMEOUT    1
  49 #define    SUBSIG_ALIGNMENT     2
  50 #define    SUBSIG_MISCERROR     5
  51
  52 #define SIGSEGV         11
  53 #define    SUBSIG_NOMAPPING     3
  54 #define    SUBSIG_PROTECTION    4
  55 #define    SUBSIG_SEGERROR      5
  56
  57 #define SIGSYS          12
  58
  59 #define SIGPIPE         13
  60 #define SIGALRM         14
  61 #define SIGTERM         15
  62 #define SIGURG          16
  63
  64 /* SunOS values which deviate from the Linux/i386 ones */
  65 #define SIGSTOP         17
  66 #define SIGTSTP         18
  67 #define SIGCONT         19
  68 #define SIGCHLD         20
  69 #define SIGTTIN         21
  70 #define SIGTTOU         22
  71 #define SIGIO           23
  72 #define SIGPOLL         SIGIO   /* SysV name for SIGIO */
  73 #define SIGXCPU         24
  74 #define SIGXFSZ         25
  75 #define SIGVTALRM       26
  76 #define SIGPROF         27
  77 #define SIGWINCH        28
  78 #define SIGLOST         29
  79 #define SIGPWR          SIGLOST
  80 #define SIGUSR1         30
  81 #define SIGUSR2         31
  82
  83 /* Most things should be clean enough to redefine this at will, if care
  84  * is taken to make libc match.
  85  */
  86
  87 #define __OLD_NSIG      32
  88 #define __NEW_NSIG      64
  89 #define _NSIG_BPW       32
  90 #define _NSIG_WORDS     (__NEW_NSIG / _NSIG_BPW)
  91
  92 #define SIGRTMIN        32
  93 #define SIGRTMAX        __NEW_NSIG
  94
  95 #if defined(__KERNEL__) || defined(__WANT_POSIX1B_SIGNALS__)
  96 #define _NSIG           __NEW_NSIG
  97 #define __new_sigset_t  sigset_t
  98 #define __new_sigaction sigaction
  99 #define __old_sigset_t  old_sigset_t
 100 #define __old_sigaction old_sigaction
 101 #else
 102 #define _NSIG           __OLD_NSIG
 103 #define __old_sigset_t  sigset_t
 104 #define __old_sigaction sigaction
 105 #endif
 106
 107 #ifndef __ASSEMBLY__
 108
 109 typedef unsigned long __old_sigset_t;
 110
 111 typedef struct {
 112         unsigned long   sig[_NSIG_WORDS];
 113 } __new_sigset_t;
 114
 115
 116 #ifdef __KERNEL__
 117 /* A SunOS sigstack */
 118 struct sigstack {
 119         char *the_stack;
 120         int   cur_status;
 121 };
 122 #endif
 123
 124 /* Sigvec flags */
 125 #define _SV_SSTACK    1u    /* This signal handler should use sig-stack */
 126 #define _SV_INTR      2u    /* Sig return should not restart system call */
 127 #define _SV_RESET     4u    /* Set handler to SIG_DFL upon taken signal */
 128 #define _SV_IGNCHILD  8u    /* Do not send SIGCHLD */
 129
 130 /*
 131  * sa_flags values: SA_STACK is not currently supported, but will allow the
 132  * usage of signal stacks by using the (now obsolete) sa_restorer field in
 133  * the sigaction structure as a stack pointer. This is now possible due to
 134  * the changes in signal handling. LBT 010493.
 135  * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
 136  * SA_RESTART flag to get restarting signals (which were the default long ago)
 137  * SA_SHIRQ flag is for shared interrupt support on PCI and EISA.
 138  */
 139 #define SA_NOCLDSTOP    _SV_IGNCHILD
 140 #define SA_STACK        _SV_SSTACK
 141 #define SA_ONSTACK      _SV_SSTACK
 142 #define SA_RESTART      _SV_INTR
 143 #define SA_ONESHOT      _SV_RESET
 144 #define SA_INTERRUPT    0x10u
 145 #define SA_NOMASK       0x20u
 146 #define SA_SHIRQ        0x40u
 147 #define SA_NOCLDWAIT    0x100u
 148 #define SA_SIGINFO      0x200u
 149
 150 #define SIG_BLOCK          0x01 /* for blocking signals */
 151 #define SIG_UNBLOCK        0x02 /* for unblocking signals */
 152 #define SIG_SETMASK        0x04 /* for setting the signal mask */
 153
 154 /*
 155  * sigaltstack controls
 156  */
 157 #define SS_ONSTACK      1
 158 #define SS_DISABLE      2
 159
 160 #define MINSIGSTKSZ     4096
 161 #define SIGSTKSZ        16384
 162
 163 #ifdef __KERNEL__
 164 /*
 165  * These values of sa_flags are used only by the kernel as part of the
 166  * irq handling routines.
 167  *
 168  * SA_INTERRUPT is also used by the irq handling routines.
 169  *
 170  * DJHR
 171  * SA_STATIC_ALLOC is used for the SPARC system to indicate that this
 172  * interrupt handler's irq structure should be statically allocated
 173  * by the request_irq routine.
 174  * The alternative is that arch/sparc/kernel/irq.c has carnal knowledge
 175  * of interrupt usage and that sucks. Also without a flag like this
 176  * it may be possible for the free_irq routine to attempt to free
 177  * statically allocated data.. which is NOT GOOD.
 178  *
 179  */
 180 #define SA_PROBE SA_ONESHOT
 181 #define SA_SAMPLE_RANDOM SA_RESTART
 182 #define SA_STATIC_ALLOC         0x80
 183 #endif
 184
 185 /* Type of a signal handler.  */
 186 #ifdef __KERNEL__
 187 typedef void (*__sighandler_t)(int, int, struct sigcontext *, char *);
 188 #else
 189 typedef void (*__sighandler_t)(int);
 190 #endif
 191
 192 #define SIG_DFL ((__sighandler_t)0)     /* default signal handling */
 193 #define SIG_IGN ((__sighandler_t)1)     /* ignore signal */
 194 #define SIG_ERR ((__sighandler_t)-1)    /* error return from signal */
 195
 196 #ifdef __KERNEL__
 197 struct __new_sigaction {
 198         __sighandler_t  sa_handler;
 199         unsigned long   sa_flags;
 200         void            (*sa_restorer)(void);   /* Not used by Linux/SPARC */
 201         __new_sigset_t  sa_mask;
 202 };
 203
 204 struct k_sigaction {
 205         struct __new_sigaction  sa;
 206         void                    __user *ka_restorer;
 207 };
 208
 209 struct __old_sigaction {
 210         __sighandler_t  sa_handler;
 211         __old_sigset_t  sa_mask;
 212         unsigned long   sa_flags;
 213         void            (*sa_restorer) (void);  /* not used by Linux/SPARC */
 214 };
 215
 216 typedef struct sigaltstack {
 217         void            __user *ss_sp;
 218         int             ss_flags;
 219         size_t          ss_size;
 220 } stack_t;
 221
 222 struct sparc_deliver_cookie {
 223         int restart_syscall;
 224         unsigned long orig_i0;
 225 };
 226
 227 struct pt_regs;
 228 extern void ptrace_signal_deliver(struct pt_regs *regs, void *cookie);
 229
 230 #endif /* !(__KERNEL__) */
 231
 232 #endif /* !(__ASSEMBLY__) */
 233
 234 #endif /* !(_ASMSPARC_SIGNAL_H) */