include/asm-sh/signal.h

   1 #ifndef __ASM_SH_SIGNAL_H
   2 #define __ASM_SH_SIGNAL_H
   3
   4 #include <linux/types.h>
   5
   6 /* Avoid too many header ordering problems.  */
   7 struct pt_regs;
   8 struct siginfo;
   9
  10 #ifdef __KERNEL__
  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 #else
  25 /* Here we must cater to libcs that poke about in kernel headers.  */
  26
  27 #define NSIG            32
  28 typedef unsigned long sigset_t;
  29
  30 #endif /* __KERNEL__ */
  31
  32 #define SIGHUP           1
  33 #define SIGINT           2
  34 #define SIGQUIT          3
  35 #define SIGILL           4
  36 #define SIGTRAP          5
  37 #define SIGABRT          6
  38 #define SIGIOT           6
  39 #define SIGBUS           7
  40 #define SIGFPE           8
  41 #define SIGKILL          9
  42 #define SIGUSR1         10
  43 #define SIGSEGV         11
  44 #define SIGUSR2         12
  45 #define SIGPIPE         13
  46 #define SIGALRM         14
  47 #define SIGTERM         15
  48 #define SIGSTKFLT       16
  49 #define SIGCHLD         17
  50 #define SIGCONT         18
  51 #define SIGSTOP         19
  52 #define SIGTSTP         20
  53 #define SIGTTIN         21
  54 #define SIGTTOU         22
  55 #define SIGURG          23
  56 #define SIGXCPU         24
  57 #define SIGXFSZ         25
  58 #define SIGVTALRM       26
  59 #define SIGPROF         27
  60 #define SIGWINCH        28
  61 #define SIGIO           29
  62 #define SIGPOLL         SIGIO
  63 /*
  64 #define SIGLOST         29
  65 */
  66 #define SIGPWR          30
  67 #define SIGSYS          31
  68 #define SIGUNUSED       31
  69
  70 /* These should not be considered constants from userland.  */
  71 #define SIGRTMIN        32
  72 #define SIGRTMAX        _NSIG
  73
  74 /*
  75  * SA_FLAGS values:
  76  *
  77  * SA_ONSTACK indicates that a registered stack_t will be used.
  78  * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
  79  * SA_RESTART flag to get restarting signals (which were the default long ago)
  80  * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
  81  * SA_RESETHAND clears the handler when the signal is delivered.
  82  * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
  83  * SA_NODEFER prevents the current signal from being masked in the handler.
  84  *
  85  * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
  86  * Unix names RESETHAND and NODEFER respectively.
  87  */
  88 #define SA_NOCLDSTOP    0x00000001
  89 #define SA_NOCLDWAIT    0x00000002
  90 #define SA_SIGINFO      0x00000004
  91 #define SA_ONSTACK      0x08000000
  92 #define SA_RESTART      0x10000000
  93 #define SA_NODEFER      0x40000000
  94 #define SA_RESETHAND    0x80000000
  95
  96 #define SA_NOMASK       SA_NODEFER
  97 #define SA_ONESHOT      SA_RESETHAND
  98 #define SA_INTERRUPT    0x20000000 /* dummy -- ignored */
  99
 100 #define SA_RESTORER     0x04000000
 101
 102 /*
 103  * sigaltstack controls
 104  */
 105 #define SS_ONSTACK      1
 106 #define SS_DISABLE      2
 107
 108 #define MINSIGSTKSZ     2048
 109 #define SIGSTKSZ        8192
 110
 111 #ifdef __KERNEL__
 112
 113 /*
 114  * These values of sa_flags are used only by the kernel as part of the
 115  * irq handling routines.
 116  *
 117  * SA_INTERRUPT is also used by the irq handling routines.
 118  * SA_SHIRQ is for shared interrupt support on PCI and EISA.
 119  */
 120 #define SA_PROBE                SA_ONESHOT
 121 #define SA_SAMPLE_RANDOM        SA_RESTART
 122 #define SA_SHIRQ                0x04000000
 123 #endif
 124
 125 #define SIG_BLOCK          0    /* for blocking signals */
 126 #define SIG_UNBLOCK        1    /* for unblocking signals */
 127 #define SIG_SETMASK        2    /* for setting the signal mask */
 128
 129 /* Type of a signal handler.  */
 130 typedef void (*__sighandler_t)(int);
 131
 132 #define SIG_DFL ((__sighandler_t)0)     /* default signal handling */
 133 #define SIG_IGN ((__sighandler_t)1)     /* ignore signal */
 134 #define SIG_ERR ((__sighandler_t)-1)    /* error return from signal */
 135
 136 #ifdef __KERNEL__
 137 struct old_sigaction {
 138         __sighandler_t sa_handler;
 139         old_sigset_t sa_mask;
 140         unsigned long sa_flags;
 141         void (*sa_restorer)(void);
 142 };
 143
 144 struct sigaction {
 145         __sighandler_t sa_handler;
 146         unsigned long sa_flags;
 147         void (*sa_restorer)(void);
 148         sigset_t sa_mask;               /* mask last for extensibility */
 149 };
 150
 151 struct k_sigaction {
 152         struct sigaction sa;
 153 };
 154 #else
 155 /* Here we must cater to libcs that poke about in kernel headers.  */
 156
 157 struct sigaction {
 158         union {
 159           __sighandler_t _sa_handler;
 160           void (*_sa_sigaction)(int, struct siginfo *, void *);
 161         } _u;
 162         sigset_t sa_mask;
 163         unsigned long sa_flags;
 164         void (*sa_restorer)(void);
 165 };
 166
 167 #define sa_handler      _u._sa_handler
 168 #define sa_sigaction    _u._sa_sigaction
 169
 170 #endif /* __KERNEL__ */
 171
 172 typedef struct sigaltstack {
 173         void *ss_sp;
 174         int ss_flags;
 175         size_t ss_size;
 176 } stack_t;
 177
 178 #ifdef __KERNEL__
 179 #include <asm/sigcontext.h>
 180
 181 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
 182
 183 #endif /* __KERNEL__ */
 184
 185 #endif /* __ASM_SH_SIGNAL_H */