include/asm-arm/signal.h

   1 #ifndef _ASMARM_SIGNAL_H
   2 #define _ASMARM_SIGNAL_H
   3
   4 #include <linux/types.h>
   5
   6 /* Avoid too many header ordering problems.  */
   7 struct siginfo;
   8
   9 #ifdef __KERNEL__
  10 /* Most things should be clean enough to redefine this at will, if care
  11    is taken to make libc match.  */
  12
  13 #define _NSIG           64
  14 #define _NSIG_BPW       32
  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 #define SIGHUP           1
  32 #define SIGINT           2
  33 #define SIGQUIT          3
  34 #define SIGILL           4
  35 #define SIGTRAP          5
  36 #define SIGABRT          6
  37 #define SIGIOT           6
  38 #define SIGBUS           7
  39 #define SIGFPE           8
  40 #define SIGKILL          9
  41 #define SIGUSR1         10
  42 #define SIGSEGV         11
  43 #define SIGUSR2         12
  44 #define SIGPIPE         13
  45 #define SIGALRM         14
  46 #define SIGTERM         15
  47 #define SIGSTKFLT       16
  48 #define SIGCHLD         17
  49 #define SIGCONT         18
  50 #define SIGSTOP         19
  51 #define SIGTSTP         20
  52 #define SIGTTIN         21
  53 #define SIGTTOU         22
  54 #define SIGURG          23
  55 #define SIGXCPU         24
  56 #define SIGXFSZ         25
  57 #define SIGVTALRM       26
  58 #define SIGPROF         27
  59 #define SIGWINCH        28
  60 #define SIGIO           29
  61 #define SIGPOLL         SIGIO
  62 /*
  63 #define SIGLOST         29
  64 */
  65 #define SIGPWR          30
  66 #define SIGSYS          31
  67 #define SIGUNUSED       31
  68
  69 /* These should not be considered constants from userland.  */
  70 #define SIGRTMIN        32
  71 #define SIGRTMAX        _NSIG
  72
  73 #define SIGSWI          32
  74
  75 /*
  76  * SA_FLAGS values:
  77  *
  78  * SA_NOCLDSTOP         flag to turn off SIGCHLD when children stop.
  79  * SA_NOCLDWAIT         flag on SIGCHLD to inhibit zombies.
  80  * SA_SIGINFO           deliver the signal with SIGINFO structs
  81  * SA_THIRTYTWO         delivers the signal in 32-bit mode, even if the task
  82  *                      is running in 26-bit.
  83  * SA_ONSTACK           allows alternate signal stacks (see sigaltstack(2)).
  84  * SA_RESTART           flag to get restarting signals (which were the default long ago)
  85  * SA_INTERRUPT         is a no-op, but left due to historical reasons. Use the
  86  * SA_NODEFER           prevents the current signal from being masked in the handler.
  87  * SA_RESETHAND         clears the handler when the signal is delivered.
  88  *
  89  * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
  90  * Unix names RESETHAND and NODEFER respectively.
  91  */
  92 #define SA_NOCLDSTOP    0x00000001
  93 #define SA_NOCLDWAIT    0x00000002
  94 #define SA_SIGINFO      0x00000004
  95 #define SA_THIRTYTWO    0x02000000
  96 #define SA_RESTORER     0x04000000
  97 #define SA_ONSTACK      0x08000000
  98 #define SA_RESTART      0x10000000
  99 #define SA_NODEFER      0x40000000
 100 #define SA_RESETHAND    0x80000000
 101
 102 #define SA_NOMASK       SA_NODEFER
 103 #define SA_ONESHOT      SA_RESETHAND
 104 #define SA_INTERRUPT    0x20000000 /* dummy -- ignored */
 105
 106
 107 /*
 108  * sigaltstack controls
 109  */
 110 #define SS_ONSTACK      1
 111 #define SS_DISABLE      2
 112
 113 #define MINSIGSTKSZ     2048
 114 #define SIGSTKSZ        8192
 115
 116 #ifdef __KERNEL__
 117
 118 /*
 119  * These values of sa_flags are used only by the kernel as part of the
 120  * irq handling routines.
 121  *
 122  * SA_INTERRUPT is also used by the irq handling routines.
 123  * SA_SHIRQ is for shared interrupt support on PCI and EISA.
 124  */
 125 #define SA_PROBE                0x80000000
 126 #define SA_SAMPLE_RANDOM        0x10000000
 127 #define SA_IRQNOMASK            0x08000000
 128 #define SA_SHIRQ                0x04000000
 129 #endif
 130
 131 #define SIG_BLOCK          0    /* for blocking signals */
 132 #define SIG_UNBLOCK        1    /* for unblocking signals */
 133 #define SIG_SETMASK        2    /* for setting the signal mask */
 134
 135 /* Type of a signal handler.  */
 136 typedef void __signalfn_t(int);
 137 typedef __signalfn_t __user *__sighandler_t;
 138
 139 typedef void __restorefn_t(void);
 140 typedef __restorefn_t __user *__sigrestore_t;
 141
 142 #define SIG_DFL ((__sighandler_t)0)     /* default signal handling */
 143 #define SIG_IGN ((__sighandler_t)1)     /* ignore signal */
 144 #define SIG_ERR ((__sighandler_t)-1)    /* error return from signal */
 145
 146 #ifdef __KERNEL__
 147 struct old_sigaction {
 148         __sighandler_t sa_handler;
 149         old_sigset_t sa_mask;
 150         unsigned long sa_flags;
 151         __sigrestore_t sa_restorer;
 152 };
 153
 154 struct sigaction {
 155         __sighandler_t sa_handler;
 156         unsigned long sa_flags;
 157         __sigrestore_t sa_restorer;
 158         sigset_t sa_mask;               /* mask last for extensibility */
 159 };
 160
 161 struct k_sigaction {
 162         struct sigaction sa;
 163 };
 164
 165 #else
 166 /* Here we must cater to libcs that poke about in kernel headers.  */
 167
 168 struct sigaction {
 169         union {
 170           __sighandler_t _sa_handler;
 171           void (*_sa_sigaction)(int, struct siginfo *, void *);
 172         } _u;
 173         sigset_t sa_mask;
 174         unsigned long sa_flags;
 175         void (*sa_restorer)(void);
 176 };
 177
 178 #define sa_handler      _u._sa_handler
 179 #define sa_sigaction    _u._sa_sigaction
 180
 181 #endif /* __KERNEL__ */
 182
 183 typedef struct sigaltstack {
 184         void __user *ss_sp;
 185         int ss_flags;
 186         size_t ss_size;
 187 } stack_t;
 188
 189 #ifdef __KERNEL__
 190 #include <asm/sigcontext.h>
 191 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
 192 #endif
 193
 194 #endif