include/asm-alpha/signal.h

   1 #ifndef _ASMAXP_SIGNAL_H
   2 #define _ASMAXP_SIGNAL_H
   3
   4 #include <linux/types.h>
   5
   6 /* Avoid too many header ordering problems.  */
   7 struct siginfo;
   8
   9 #ifdef __KERNEL__
  10 /* Digital Unix defines 64 signals.  Most things should be clean enough
  11    to redefine this at will, if care is taken to make libc match.  */
  12
  13 #define _NSIG           64
  14 #define _NSIG_BPW       64
  15 #define _NSIG_WORDS     (_NSIG / _NSIG_BPW)
  16
  17 typedef unsigned long old_sigset_t;             /* at least 32 bits */
  18
  19 typedef struct {
  20         unsigned long sig[_NSIG_WORDS];
  21 } sigset_t;
  22
  23 #else
  24 /* Here we must cater to libcs that poke about in kernel headers.  */
  25
  26 #define NSIG            32
  27 typedef unsigned long sigset_t;
  28
  29 #endif /* __KERNEL__ */
  30
  31
  32 /*
  33  * Linux/AXP has different signal numbers that Linux/i386: I'm trying
  34  * to make it OSF/1 binary compatible, at least for normal binaries.
  35  */
  36 #define SIGHUP           1
  37 #define SIGINT           2
  38 #define SIGQUIT          3
  39 #define SIGILL           4
  40 #define SIGTRAP          5
  41 #define SIGABRT          6
  42 #define SIGEMT           7
  43 #define SIGFPE           8
  44 #define SIGKILL          9
  45 #define SIGBUS          10
  46 #define SIGSEGV         11
  47 #define SIGSYS          12
  48 #define SIGPIPE         13
  49 #define SIGALRM         14
  50 #define SIGTERM         15
  51 #define SIGURG          16
  52 #define SIGSTOP         17
  53 #define SIGTSTP         18
  54 #define SIGCONT         19
  55 #define SIGCHLD         20
  56 #define SIGTTIN         21
  57 #define SIGTTOU         22
  58 #define SIGIO           23
  59 #define SIGXCPU         24
  60 #define SIGXFSZ         25
  61 #define SIGVTALRM       26
  62 #define SIGPROF         27
  63 #define SIGWINCH        28
  64 #define SIGINFO         29
  65 #define SIGUSR1         30
  66 #define SIGUSR2         31
  67
  68 #define SIGPOLL SIGIO
  69 #define SIGPWR  SIGINFO
  70 #define SIGIOT  SIGABRT
  71
  72 /* These should not be considered constants from userland.  */
  73 #define SIGRTMIN        32
  74 #define SIGRTMAX        _NSIG
  75
  76 /*
  77  * SA_FLAGS values:
  78  *
  79  * SA_ONSTACK indicates that a registered stack_t will be used.
  80  * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
  81  * SA_RESTART flag to get restarting signals (which were the default long ago)
  82  * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
  83  * SA_RESETHAND clears the handler when the signal is delivered.
  84  * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
  85  * SA_NODEFER prevents the current signal from being masked in the handler.
  86  *
  87  * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
  88  * Unix names RESETHAND and NODEFER respectively.
  89  */
  90
  91 #define SA_ONSTACK      0x00000001
  92 #define SA_RESTART      0x00000002
  93 #define SA_NOCLDSTOP    0x00000004
  94 #define SA_NODEFER      0x00000008
  95 #define SA_RESETHAND    0x00000010
  96 #define SA_NOCLDWAIT    0x00000020
  97 #define SA_SIGINFO      0x00000040
  98
  99 #define SA_ONESHOT      SA_RESETHAND
 100 #define SA_NOMASK       SA_NODEFER
 101 #define SA_INTERRUPT    0x20000000 /* dummy -- ignored */
 102
 103 /*
 104  * sigaltstack controls
 105  */
 106 #define SS_ONSTACK      1
 107 #define SS_DISABLE      2
 108
 109 #define MINSIGSTKSZ     4096
 110 #define SIGSTKSZ        16384
 111
 112
 113 #ifdef __KERNEL__
 114 /*
 115  * These values of sa_flags are used only by the kernel as part of the
 116  * irq handling routines.
 117  *
 118  * SA_INTERRUPT is also used by the irq handling routines.
 119  * SA_SHIRQ is for shared interrupt support on PCI and EISA.
 120  */
 121 #define SA_PROBE                SA_ONESHOT
 122 #define SA_SAMPLE_RANDOM        SA_RESTART
 123 #define SA_SHIRQ                0x40000000
 124 #endif
 125
 126 #define SIG_BLOCK          1    /* for blocking signals */
 127 #define SIG_UNBLOCK        2    /* for unblocking signals */
 128 #define SIG_SETMASK        3    /* for setting the signal mask */
 129
 130 /* Type of a signal handler.  */
 131 typedef void __signalfn_t(int);
 132 typedef __signalfn_t __user *__sighandler_t;
 133
 134 typedef void __restorefn_t(void);
 135 typedef __restorefn_t __user *__sigrestore_t;
 136
 137 #define SIG_DFL ((__sighandler_t)0)     /* default signal handling */
 138 #define SIG_IGN ((__sighandler_t)1)     /* ignore signal */
 139 #define SIG_ERR ((__sighandler_t)-1)    /* error return from signal */
 140
 141 #ifdef __KERNEL__
 142 struct osf_sigaction {
 143         __sighandler_t  sa_handler;
 144         old_sigset_t    sa_mask;
 145         int             sa_flags;
 146 };
 147
 148 struct sigaction {
 149         __sighandler_t  sa_handler;
 150         unsigned long   sa_flags;
 151         sigset_t        sa_mask;        /* mask last for extensibility */
 152 };
 153
 154 struct k_sigaction {
 155         struct sigaction sa;
 156         __sigrestore_t ka_restorer;
 157 };
 158 #else
 159 /* Here we must cater to libcs that poke about in kernel headers.  */
 160
 161 struct sigaction {
 162         union {
 163           __sighandler_t        _sa_handler;
 164           void (*_sa_sigaction)(int, struct siginfo *, void *);
 165         } _u;
 166         sigset_t        sa_mask;
 167         int             sa_flags;
 168 };
 169
 170 #define sa_handler      _u._sa_handler
 171 #define sa_sigaction    _u._sa_sigaction
 172
 173 #endif /* __KERNEL__ */
 174
 175 typedef struct sigaltstack {
 176         void __user *ss_sp;
 177         int ss_flags;
 178         size_t ss_size;
 179 } stack_t;
 180
 181 /* sigstack(2) is deprecated, and will be withdrawn in a future version
 182    of the X/Open CAE Specification.  Use sigaltstack instead.  It is only
 183    implemented here for OSF/1 compatibility.  */
 184
 185 struct sigstack {
 186         void __user *ss_sp;
 187         int ss_onstack;
 188 };
 189
 190 #ifdef __KERNEL__
 191 #include <asm/sigcontext.h>
 192
 193 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
 194
 195 #endif
 196
 197 #endif