arch/alpha/include/asm/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_RESTART flag to get restarting signals (which were the default long ago)
  81  * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
  82  * SA_RESETHAND clears the handler when the signal is delivered.
  83  * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
  84  * SA_NODEFER prevents the current signal from being masked in the handler.
  85  *
  86  * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
  87  * Unix names RESETHAND and NODEFER respectively.
  88  */
  89
  90 #define SA_ONSTACK      0x00000001
  91 #define SA_RESTART      0x00000002
  92 #define SA_NOCLDSTOP    0x00000004
  93 #define SA_NODEFER      0x00000008
  94 #define SA_RESETHAND    0x00000010
  95 #define SA_NOCLDWAIT    0x00000020
  96 #define SA_SIGINFO      0x00000040
  97
  98 #define SA_ONESHOT      SA_RESETHAND
  99 #define SA_NOMASK       SA_NODEFER
 100
 101 /*
 102  * sigaltstack controls
 103  */
 104 #define SS_ONSTACK      1
 105 #define SS_DISABLE      2
 106
 107 #define MINSIGSTKSZ     4096
 108 #define SIGSTKSZ        16384
 109
 110 #define SIG_BLOCK          1    /* for blocking signals */
 111 #define SIG_UNBLOCK        2    /* for unblocking signals */
 112 #define SIG_SETMASK        3    /* for setting the signal mask */
 113
 114 #include <asm-generic/signal-defs.h>
 115
 116 #ifdef __KERNEL__
 117 struct osf_sigaction {
 118         __sighandler_t  sa_handler;
 119         old_sigset_t    sa_mask;
 120         int             sa_flags;
 121 };
 122
 123 struct sigaction {
 124         __sighandler_t  sa_handler;
 125         unsigned long   sa_flags;
 126         sigset_t        sa_mask;        /* mask last for extensibility */
 127 };
 128
 129 struct k_sigaction {
 130         struct sigaction sa;
 131         __sigrestore_t ka_restorer;
 132 };
 133 #else
 134 /* Here we must cater to libcs that poke about in kernel headers.  */
 135
 136 struct sigaction {
 137         union {
 138           __sighandler_t        _sa_handler;
 139           void (*_sa_sigaction)(int, struct siginfo *, void *);
 140         } _u;
 141         sigset_t        sa_mask;
 142         int             sa_flags;
 143 };
 144
 145 #define sa_handler      _u._sa_handler
 146 #define sa_sigaction    _u._sa_sigaction
 147
 148 #endif /* __KERNEL__ */
 149
 150 typedef struct sigaltstack {
 151         void __user *ss_sp;
 152         int ss_flags;
 153         size_t ss_size;
 154 } stack_t;
 155
 156 /* sigstack(2) is deprecated, and will be withdrawn in a future version
 157    of the X/Open CAE Specification.  Use sigaltstack instead.  It is only
 158    implemented here for OSF/1 compatibility.  */
 159
 160 struct sigstack {
 161         void __user *ss_sp;
 162         int ss_onstack;
 163 };
 164
 165 #ifdef __KERNEL__
 166 #include <asm/sigcontext.h>
 167
 168 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
 169
 170 #endif
 171
 172 #endif