arch/powerpc/include/asm/signal.h

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