include/asm-m68k/signal.h

   1 #ifndef _M68K_SIGNAL_H
   2 #define _M68K_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 /*
  74  * SA_FLAGS values:
  75  *
  76  * SA_ONSTACK indicates that a registered stack_t will be used.
  77  * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
  78  * SA_RESTART flag to get restarting signals (which were the default long ago)
  79  * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
  80  * SA_RESETHAND clears the handler when the signal is delivered.
  81  * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
  82  * SA_NODEFER prevents the current signal from being masked in the handler.
  83  *
  84  * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
  85  * Unix names RESETHAND and NODEFER respectively.
  86  */
  87 #define SA_NOCLDSTOP    0x00000001
  88 #define SA_NOCLDWAIT    0x00000002
  89 #define SA_SIGINFO      0x00000004
  90 #define SA_ONSTACK      0x08000000
  91 #define SA_RESTART      0x10000000
  92 #define SA_NODEFER      0x40000000
  93 #define SA_RESETHAND    0x80000000
  94
  95 #define SA_NOMASK       SA_NODEFER
  96 #define SA_ONESHOT      SA_RESETHAND
  97 #define SA_INTERRUPT    0x20000000 /* dummy -- ignored */
  98
  99 /*
 100  * sigaltstack controls
 101  */
 102 #define SS_ONSTACK      1
 103 #define SS_DISABLE      2
 104
 105 #define MINSIGSTKSZ     2048
 106 #define SIGSTKSZ        8192
 107
 108 #include <asm-generic/signal.h>
 109
 110 #ifdef __KERNEL__
 111 struct old_sigaction {
 112         __sighandler_t sa_handler;
 113         old_sigset_t sa_mask;
 114         unsigned long sa_flags;
 115         __sigrestore_t sa_restorer;
 116 };
 117
 118 struct sigaction {
 119         __sighandler_t sa_handler;
 120         unsigned long sa_flags;
 121         __sigrestore_t sa_restorer;
 122         sigset_t sa_mask;               /* mask last for extensibility */
 123 };
 124
 125 struct k_sigaction {
 126         struct sigaction sa;
 127 };
 128 #else
 129 /* Here we must cater to libcs that poke about in kernel headers.  */
 130
 131 struct sigaction {
 132         union {
 133           __sighandler_t _sa_handler;
 134           void (*_sa_sigaction)(int, struct siginfo *, void *);
 135         } _u;
 136         sigset_t sa_mask;
 137         unsigned long sa_flags;
 138         void (*sa_restorer)(void);
 139 };
 140
 141 #define sa_handler      _u._sa_handler
 142 #define sa_sigaction    _u._sa_sigaction
 143
 144 #endif /* __KERNEL__ */
 145
 146 typedef struct sigaltstack {
 147         void *ss_sp;
 148         int ss_flags;
 149         size_t ss_size;
 150 } stack_t;
 151
 152 #ifdef __KERNEL__
 153 #include <asm/sigcontext.h>
 154
 155 #define __HAVE_ARCH_SIG_BITOPS
 156
 157 static inline void sigaddset(sigset_t *set, int _sig)
 158 {
 159         __asm__("bfset %0{%1,#1}" : "=m" (*set) : "id" ((_sig - 1) ^ 31)
 160                 : "cc");
 161 }
 162
 163 static inline void sigdelset(sigset_t *set, int _sig)
 164 {
 165         __asm__("bfclr %0{%1,#1}" : "=m"(*set) : "id"((_sig - 1) ^ 31)
 166                 : "cc");
 167 }
 168
 169 static inline int __const_sigismember(sigset_t *set, int _sig)
 170 {
 171         unsigned long sig = _sig - 1;
 172         return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
 173 }
 174
 175 static inline int __gen_sigismember(sigset_t *set, int _sig)
 176 {
 177         int ret;
 178         __asm__("bfextu %1{%2,#1},%0"
 179                 : "=d"(ret) : "m"(*set), "id"((_sig-1) ^ 31));
 180         return ret;
 181 }
 182
 183 #define sigismember(set,sig)                    \
 184         (__builtin_constant_p(sig) ?            \
 185          __const_sigismember(set,sig) :         \
 186          __gen_sigismember(set,sig))
 187
 188 static inline int sigfindinword(unsigned long word)
 189 {
 190         __asm__("bfffo %1{#0,#0},%0" : "=d"(word) : "d"(word & -word) : "cc");
 191         return word ^ 31;
 192 }
 193
 194 extern void ptrace_signal_deliver(struct pt_regs *regs, void *cookie);
 195
 196 #endif /* __KERNEL__ */
 197
 198 #endif /* _M68K_SIGNAL_H */