arch/sparc/include/asm/signal.h

   1 #ifndef __SPARC_SIGNAL_H
   2 #define __SPARC_SIGNAL_H
   3
   4 #include <asm/sigcontext.h>
   5 #include <linux/compiler.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 #define __OLD_NSIG      32
  86 #define __NEW_NSIG      64
  87 #ifdef __arch64__
  88 #define _NSIG_BPW       64
  89 #else
  90 #define _NSIG_BPW       32
  91 #endif
  92 #define _NSIG_WORDS     (__NEW_NSIG / _NSIG_BPW)
  93
  94 #define SIGRTMIN       32
  95 #define SIGRTMAX       __NEW_NSIG
  96
  97 #if defined(__KERNEL__) || defined(__WANT_POSIX1B_SIGNALS__)
  98 #define _NSIG                   __NEW_NSIG
  99 #define __new_sigset_t          sigset_t
 100 #define __new_sigaction         sigaction
 101 #define __new_sigaction32       sigaction32
 102 #define __old_sigset_t          old_sigset_t
 103 #define __old_sigaction         old_sigaction
 104 #define __old_sigaction32       old_sigaction32
 105 #else
 106 #define _NSIG                   __OLD_NSIG
 107 #define NSIG                    _NSIG
 108 #define __old_sigset_t          sigset_t
 109 #define __old_sigaction         sigaction
 110 #define __old_sigaction32       sigaction32
 111 #endif
 112
 113 #ifndef __ASSEMBLY__
 114
 115 typedef unsigned long __old_sigset_t;            /* at least 32 bits */
 116
 117 typedef struct {
 118        unsigned long sig[_NSIG_WORDS];
 119 } __new_sigset_t;
 120
 121 /* A SunOS sigstack */
 122 struct sigstack {
 123         /* XXX 32-bit pointers pinhead XXX */
 124         char *the_stack;
 125         int   cur_status;
 126 };
 127
 128 /* Sigvec flags */
 129 #define _SV_SSTACK    1u    /* This signal handler should use sig-stack */
 130 #define _SV_INTR      2u    /* Sig return should not restart system call */
 131 #define _SV_RESET     4u    /* Set handler to SIG_DFL upon taken signal */
 132 #define _SV_IGNCHILD  8u    /* Do not send SIGCHLD */
 133
 134 /*
 135  * sa_flags values: SA_STACK is not currently supported, but will allow the
 136  * usage of signal stacks by using the (now obsolete) sa_restorer field in
 137  * the sigaction structure as a stack pointer. This is now possible due to
 138  * the changes in signal handling. LBT 010493.
 139  * SA_RESTART flag to get restarting signals (which were the default long ago)
 140  */
 141 #define SA_NOCLDSTOP    _SV_IGNCHILD
 142 #define SA_STACK        _SV_SSTACK
 143 #define SA_ONSTACK      _SV_SSTACK
 144 #define SA_RESTART      _SV_INTR
 145 #define SA_ONESHOT      _SV_RESET
 146 #define SA_NOMASK       0x20u
 147 #define SA_NOCLDWAIT    0x100u
 148 #define SA_SIGINFO      0x200u
 149
 150
 151 #define SIG_BLOCK          0x01 /* for blocking signals */
 152 #define SIG_UNBLOCK        0x02 /* for unblocking signals */
 153 #define SIG_SETMASK        0x04 /* for setting the signal mask */
 154
 155 /*
 156  * sigaltstack controls
 157  */
 158 #define SS_ONSTACK      1
 159 #define SS_DISABLE      2
 160
 161 #define MINSIGSTKSZ     4096
 162 #define SIGSTKSZ        16384
 163
 164 #ifdef __KERNEL__
 165 /*
 166  * DJHR
 167  * SA_STATIC_ALLOC is used for the sparc32 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_STATIC_ALLOC         0x8000
 177 #endif
 178
 179 #include <asm-generic/signal-defs.h>
 180
 181 struct __new_sigaction {
 182         __sighandler_t          sa_handler;
 183         unsigned long           sa_flags;
 184         __sigrestore_t          sa_restorer;  /* not used by Linux/SPARC yet */
 185         __new_sigset_t          sa_mask;
 186 };
 187
 188 struct __old_sigaction {
 189         __sighandler_t          sa_handler;
 190         __old_sigset_t          sa_mask;
 191         unsigned long           sa_flags;
 192         void                    (*sa_restorer)(void);  /* not used by Linux/SPARC yet */
 193 };
 194
 195 typedef struct sigaltstack {
 196         void                    __user *ss_sp;
 197         int                     ss_flags;
 198         size_t                  ss_size;
 199 } stack_t;
 200
 201 #ifdef __KERNEL__
 202
 203 struct k_sigaction {
 204         struct                  __new_sigaction sa;
 205         void                    __user *ka_restorer;
 206 };
 207
 208 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
 209
 210 #endif /* !(__KERNEL__) */
 211
 212 #endif /* !(__ASSEMBLY__) */
 213
 214 #endif /* !(__SPARC_SIGNAL_H) */