include/asm-ppc/signal.h

   1 #ifndef _ASMPPC_SIGNAL_H
   2 #define _ASMPPC_SIGNAL_H
   3
   4 #ifdef __KERNEL__
   5 #include <linux/types.h>
   6 #endif /* __KERNEL__ */
   7
   8 /* Avoid too many header ordering problems.  */
   9 struct siginfo;
  10
  11 /* Most things should be clean enough to redefine this at will, if care
  12    is taken to make libc match.  */
  13
  14 #define _NSIG           64
  15 #define _NSIG_BPW       32
  16 #define _NSIG_WORDS     (_NSIG / _NSIG_BPW)
  17
  18 typedef unsigned long old_sigset_t;             /* at least 32 bits */
  19
  20 typedef struct {
  21         unsigned long sig[_NSIG_WORDS];
  22 } sigset_t;
  23
  24 #define SIGHUP           1
  25 #define SIGINT           2
  26 #define SIGQUIT          3
  27 #define SIGILL           4
  28 #define SIGTRAP          5
  29 #define SIGABRT          6
  30 #define SIGIOT           6
  31 #define SIGBUS           7
  32 #define SIGFPE           8
  33 #define SIGKILL          9
  34 #define SIGUSR1         10
  35 #define SIGSEGV         11
  36 #define SIGUSR2         12
  37 #define SIGPIPE         13
  38 #define SIGALRM         14
  39 #define SIGTERM         15
  40 #define SIGSTKFLT       16
  41 #define SIGCHLD         17
  42 #define SIGCONT         18
  43 #define SIGSTOP         19
  44 #define SIGTSTP         20
  45 #define SIGTTIN         21
  46 #define SIGTTOU         22
  47 #define SIGURG          23
  48 #define SIGXCPU         24
  49 #define SIGXFSZ         25
  50 #define SIGVTALRM       26
  51 #define SIGPROF         27
  52 #define SIGWINCH        28
  53 #define SIGIO           29
  54 #define SIGPOLL         SIGIO
  55 /*
  56 #define SIGLOST         29
  57 */
  58 #define SIGPWR          30
  59 #define SIGSYS          31
  60 #define SIGUNUSED       31
  61
  62 /* These should not be considered constants from userland.  */
  63 #define SIGRTMIN        32
  64 #define SIGRTMAX        (_NSIG-1)
  65
  66 /*
  67  * SA_FLAGS values:
  68  *
  69  * SA_ONSTACK is not currently supported, but will allow sigaltstack(2).
  70  * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
  71  * SA_RESTART flag to get restarting signals (which were the default long ago)
  72  * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
  73  * SA_RESETHAND clears the handler when the signal is delivered.
  74  * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
  75  * SA_NODEFER prevents the current signal from being masked in the handler.
  76  *
  77  * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
  78  * Unix names RESETHAND and NODEFER respectively.
  79  */
  80 #define SA_NOCLDSTOP    0x00000001
  81 #define SA_NOCLDWAIT    0x00000002 /* not supported yet */
  82 #define SA_SIGINFO      0x00000004
  83 #define SA_ONSTACK      0x08000000
  84 #define SA_RESTART      0x10000000
  85 #define SA_NODEFER      0x40000000
  86 #define SA_RESETHAND    0x80000000
  87
  88 #define SA_NOMASK       SA_NODEFER
  89 #define SA_ONESHOT      SA_RESETHAND
  90 #define SA_INTERRUPT    0x20000000 /* dummy -- ignored */
  91
  92 #define SA_RESTORER     0x04000000
  93
  94 /*
  95  * sigaltstack controls
  96  */
  97 #define SS_ONSTACK      1
  98 #define SS_DISABLE      2
  99
 100 #define MINSIGSTKSZ     2048
 101 #define SIGSTKSZ        8192
 102 #ifdef __KERNEL__
 103
 104 /*
 105  * These values of sa_flags are used only by the kernel as part of the
 106  * irq handling routines.
 107  *
 108  * SA_INTERRUPT is also used by the irq handling routines.
 109  * SA_SHIRQ is for shared interrupt support on PCI and EISA.
 110  */
 111 #define SA_PROBE                SA_ONESHOT
 112 #define SA_SAMPLE_RANDOM        SA_RESTART
 113 #define SA_SHIRQ                0x04000000
 114 #endif
 115
 116 #define SIG_BLOCK          0    /* for blocking signals */
 117 #define SIG_UNBLOCK        1    /* for unblocking signals */
 118 #define SIG_SETMASK        2    /* for setting the signal mask */
 119
 120 /* Type of a signal handler.  */
 121 typedef void (*__sighandler_t)(int);
 122
 123 #define SIG_DFL ((__sighandler_t)0)     /* default signal handling */
 124 #define SIG_IGN ((__sighandler_t)1)     /* ignore signal */
 125 #define SIG_ERR ((__sighandler_t)-1)    /* error return from signal */
 126
 127 struct old_sigaction {
 128         __sighandler_t sa_handler;
 129         old_sigset_t sa_mask;
 130         unsigned long sa_flags;
 131         void (*sa_restorer)(void);
 132 };
 133
 134 struct sigaction {
 135         __sighandler_t sa_handler;
 136         unsigned long sa_flags;
 137         void (*sa_restorer)(void);
 138         sigset_t sa_mask;               /* mask last for extensibility */
 139 };
 140
 141 struct k_sigaction {
 142         struct sigaction sa;
 143 };
 144
 145 typedef struct sigaltstack {
 146         void *ss_sp;
 147         int ss_flags;
 148         size_t ss_size;
 149 } stack_t;
 150
 151 #ifdef __KERNEL__
 152 #include <asm/sigcontext.h>
 153
 154 #endif
 155
 156 #endif