arch/s390/include/asm/signal.h

   1 /*
   2  *  S390 version
   3  *
   4  *  Derived from "include/asm-i386/signal.h"
   5  */
   6
   7 #ifndef _ASMS390_SIGNAL_H
   8 #define _ASMS390_SIGNAL_H
   9
  10 #include <linux/types.h>
  11 #include <linux/time.h>
  12
  13 /* Avoid too many header ordering problems.  */
  14 struct siginfo;
  15 struct pt_regs;
  16
  17 #ifdef __KERNEL__
  18 /* Most things should be clean enough to redefine this at will, if care
  19    is taken to make libc match.  */
  20 #include <asm/sigcontext.h>
  21 #define _NSIG           _SIGCONTEXT_NSIG
  22 #define _NSIG_BPW       _SIGCONTEXT_NSIG_BPW
  23 #define _NSIG_WORDS     _SIGCONTEXT_NSIG_WORDS
  24
  25 typedef unsigned long old_sigset_t;             /* at least 32 bits */
  26
  27 typedef struct {
  28         unsigned long sig[_NSIG_WORDS];
  29 } sigset_t;
  30
  31 #else
  32 /* Here we must cater to libcs that poke about in kernel headers.  */
  33
  34 #define NSIG            32
  35 typedef unsigned long sigset_t;
  36
  37 #endif /* __KERNEL__ */
  38
  39 #define SIGHUP           1
  40 #define SIGINT           2
  41 #define SIGQUIT          3
  42 #define SIGILL           4
  43 #define SIGTRAP          5
  44 #define SIGABRT          6
  45 #define SIGIOT           6
  46 #define SIGBUS           7
  47 #define SIGFPE           8
  48 #define SIGKILL          9
  49 #define SIGUSR1         10
  50 #define SIGSEGV         11
  51 #define SIGUSR2         12
  52 #define SIGPIPE         13
  53 #define SIGALRM         14
  54 #define SIGTERM         15
  55 #define SIGSTKFLT       16
  56 #define SIGCHLD         17
  57 #define SIGCONT         18
  58 #define SIGSTOP         19
  59 #define SIGTSTP         20
  60 #define SIGTTIN         21
  61 #define SIGTTOU         22
  62 #define SIGURG          23
  63 #define SIGXCPU         24
  64 #define SIGXFSZ         25
  65 #define SIGVTALRM       26
  66 #define SIGPROF         27
  67 #define SIGWINCH        28
  68 #define SIGIO           29
  69 #define SIGPOLL         SIGIO
  70 /*
  71 #define SIGLOST         29
  72 */
  73 #define SIGPWR          30
  74 #define SIGSYS          31
  75 #define SIGUNUSED       31
  76
  77 /* These should not be considered constants from userland.  */
  78 #define SIGRTMIN        32
  79 #define SIGRTMAX        _NSIG
  80
  81 /*
  82  * SA_FLAGS values:
  83  *
  84  * SA_ONSTACK indicates that a registered stack_t will be used.
  85  * SA_RESTART flag to get restarting signals (which were the default long ago)
  86  * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
  87  * SA_RESETHAND clears the handler when the signal is delivered.
  88  * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
  89  * SA_NODEFER prevents the current signal from being masked in the handler.
  90  *
  91  * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
  92  * Unix names RESETHAND and NODEFER respectively.
  93  */
  94 #define SA_NOCLDSTOP    0x00000001
  95 #define SA_NOCLDWAIT    0x00000002
  96 #define SA_SIGINFO      0x00000004
  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
 105 #define SA_RESTORER     0x04000000
 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 #include <asm-generic/signal-defs.h>
 117
 118 #ifdef __KERNEL__
 119 struct old_sigaction {
 120         __sighandler_t sa_handler;
 121         old_sigset_t sa_mask;
 122         unsigned long sa_flags;
 123         void (*sa_restorer)(void);
 124 };
 125
 126 struct sigaction {
 127         __sighandler_t sa_handler;
 128         unsigned long sa_flags;
 129         void (*sa_restorer)(void);
 130         sigset_t sa_mask;               /* mask last for extensibility */
 131 };
 132
 133 struct k_sigaction {
 134         struct sigaction sa;
 135 };
 136
 137 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
 138
 139 #else
 140 /* Here we must cater to libcs that poke about in kernel headers.  */
 141
 142 struct sigaction {
 143         union {
 144           __sighandler_t _sa_handler;
 145           void (*_sa_sigaction)(int, struct siginfo *, void *);
 146         } _u;
 147 #ifndef __s390x__ /* lovely */
 148         sigset_t sa_mask;
 149         unsigned long sa_flags;
 150         void (*sa_restorer)(void);
 151 #else  /* __s390x__ */
 152         unsigned long sa_flags;
 153         void (*sa_restorer)(void);
 154         sigset_t sa_mask;
 155 #endif /* __s390x__ */
 156 };
 157
 158 #define sa_handler      _u._sa_handler
 159 #define sa_sigaction    _u._sa_sigaction
 160
 161 #endif /* __KERNEL__ */
 162
 163 typedef struct sigaltstack {
 164         void __user *ss_sp;
 165         int ss_flags;
 166         size_t ss_size;
 167 } stack_t;
 168
 169
 170 #endif