include/asm-s390/signal.h

   1 /*
   2  *  include/asm-s390/signal.h
   3  *
   4  *  S390 version
   5  *
   6  *  Derived from "include/asm-i386/signal.h"
   7  */
   8
   9 #ifndef _ASMS390_SIGNAL_H
  10 #define _ASMS390_SIGNAL_H
  11
  12 #include <linux/types.h>
  13 #include <linux/time.h>
  14
  15 /* Avoid too many header ordering problems.  */
  16 struct siginfo;
  17 struct pt_regs;
  18
  19 #ifdef __KERNEL__
  20 /* Most things should be clean enough to redefine this at will, if care
  21    is taken to make libc match.  */
  22 #include <asm/sigcontext.h>
  23 #define _NSIG           _SIGCONTEXT_NSIG
  24 #define _NSIG_BPW       _SIGCONTEXT_NSIG_BPW
  25 #define _NSIG_WORDS     _SIGCONTEXT_NSIG_WORDS
  26
  27 typedef unsigned long old_sigset_t;             /* at least 32 bits */
  28
  29 typedef struct {
  30         unsigned long sig[_NSIG_WORDS];
  31 } sigset_t;
  32
  33 #else
  34 /* Here we must cater to libcs that poke about in kernel headers.  */
  35
  36 #define NSIG            32
  37 typedef unsigned long sigset_t;
  38
  39 #endif /* __KERNEL__ */
  40
  41 #define SIGHUP           1
  42 #define SIGINT           2
  43 #define SIGQUIT          3
  44 #define SIGILL           4
  45 #define SIGTRAP          5
  46 #define SIGABRT          6
  47 #define SIGIOT           6
  48 #define SIGBUS           7
  49 #define SIGFPE           8
  50 #define SIGKILL          9
  51 #define SIGUSR1         10
  52 #define SIGSEGV         11
  53 #define SIGUSR2         12
  54 #define SIGPIPE         13
  55 #define SIGALRM         14
  56 #define SIGTERM         15
  57 #define SIGSTKFLT       16
  58 #define SIGCHLD         17
  59 #define SIGCONT         18
  60 #define SIGSTOP         19
  61 #define SIGTSTP         20
  62 #define SIGTTIN         21
  63 #define SIGTTOU         22
  64 #define SIGURG          23
  65 #define SIGXCPU         24
  66 #define SIGXFSZ         25
  67 #define SIGVTALRM       26
  68 #define SIGPROF         27
  69 #define SIGWINCH        28
  70 #define SIGIO           29
  71 #define SIGPOLL         SIGIO
  72 /*
  73 #define SIGLOST         29
  74 */
  75 #define SIGPWR          30
  76 #define SIGSYS          31
  77 #define SIGUNUSED       31
  78
  79 /* These should not be considered constants from userland.  */
  80 #define SIGRTMIN        32
  81 #define SIGRTMAX        _NSIG
  82
  83 /*
  84  * SA_FLAGS values:
  85  *
  86  * SA_ONSTACK indicates that a registered stack_t will be used.
  87  * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
  88  * SA_RESTART flag to get restarting signals (which were the default long ago)
  89  * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
  90  * SA_RESETHAND clears the handler when the signal is delivered.
  91  * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
  92  * SA_NODEFER prevents the current signal from being masked in the handler.
  93  *
  94  * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
  95  * Unix names RESETHAND and NODEFER respectively.
  96  */
  97 #define SA_NOCLDSTOP    0x00000001
  98 #define SA_NOCLDWAIT    0x00000002
  99 #define SA_SIGINFO      0x00000004
 100 #define SA_ONSTACK      0x08000000
 101 #define SA_RESTART      0x10000000
 102 #define SA_NODEFER      0x40000000
 103 #define SA_RESETHAND    0x80000000
 104
 105 #define SA_NOMASK       SA_NODEFER
 106 #define SA_ONESHOT      SA_RESETHAND
 107 #define SA_INTERRUPT    0x20000000 /* dummy -- ignored */
 108
 109 #define SA_RESTORER     0x04000000
 110
 111 /*
 112  * sigaltstack controls
 113  */
 114 #define SS_ONSTACK      1
 115 #define SS_DISABLE      2
 116
 117 #define MINSIGSTKSZ     2048
 118 #define SIGSTKSZ        8192
 119
 120 #ifdef __KERNEL__
 121
 122 /*
 123  * These values of sa_flags are used only by the kernel as part of the
 124  * irq handling routines.
 125  *
 126  * SA_INTERRUPT is also used by the irq handling routines.
 127  * SA_SHIRQ is for shared interrupt support on PCI and EISA.
 128  */
 129 #define SA_PROBE                SA_ONESHOT
 130 #define SA_SAMPLE_RANDOM        SA_RESTART
 131 #define SA_SHIRQ                0x04000000
 132 #endif
 133
 134 #define SIG_BLOCK          0    /* for blocking signals */
 135 #define SIG_UNBLOCK        1    /* for unblocking signals */
 136 #define SIG_SETMASK        2    /* for setting the signal mask */
 137
 138 /* Type of a signal handler.  */
 139 typedef void (*__sighandler_t)(int);
 140
 141 #define SIG_DFL ((__sighandler_t)0)     /* default signal handling */
 142 #define SIG_IGN ((__sighandler_t)1)     /* ignore signal */
 143 #define SIG_ERR ((__sighandler_t)-1)    /* error return from signal */
 144
 145 #ifdef __KERNEL__
 146 struct old_sigaction {
 147         __sighandler_t sa_handler;
 148         old_sigset_t sa_mask;
 149         unsigned long sa_flags;
 150         void (*sa_restorer)(void);
 151 };
 152
 153 struct sigaction {
 154         __sighandler_t sa_handler;
 155         unsigned long sa_flags;
 156         void (*sa_restorer)(void);
 157         sigset_t sa_mask;               /* mask last for extensibility */
 158 };
 159
 160 struct k_sigaction {
 161         struct sigaction sa;
 162 };
 163
 164 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
 165
 166 #else
 167 /* Here we must cater to libcs that poke about in kernel headers.  */
 168
 169 struct sigaction {
 170         union {
 171           __sighandler_t _sa_handler;
 172           void (*_sa_sigaction)(int, struct siginfo *, void *);
 173         } _u;
 174 #ifndef __s390x__ /* lovely */
 175         sigset_t sa_mask;
 176         unsigned long sa_flags;
 177         void (*sa_restorer)(void);
 178 #else  /* __s390x__ */
 179         unsigned long sa_flags;
 180         void (*sa_restorer)(void);
 181         sigset_t sa_mask;
 182 #endif /* __s390x__ */
 183 };
 184
 185 #define sa_handler      _u._sa_handler
 186 #define sa_sigaction    _u._sa_sigaction
 187
 188 #endif /* __KERNEL__ */
 189
 190 typedef struct sigaltstack {
 191         void *ss_sp;
 192         int ss_flags;
 193         size_t ss_size;
 194 } stack_t;
 195
 196
 197 #endif