arch/m68k/include/asm/signal.h

   1 #ifndef _M68K_SIGNAL_H
   2 #define _M68K_SIGNAL_H
   3
   4 #include <uapi/asm/signal.h>
   5
   6 /* Most things should be clean enough to redefine this at will, if care
   7    is taken to make libc match.  */
   8
   9 #define _NSIG           64
  10 #define _NSIG_BPW       32
  11 #define _NSIG_WORDS     (_NSIG / _NSIG_BPW)
  12
  13 typedef unsigned long old_sigset_t;             /* at least 32 bits */
  14
  15 typedef struct {
  16         unsigned long sig[_NSIG_WORDS];
  17 } sigset_t;
  18
  19 struct old_sigaction {
  20         __sighandler_t sa_handler;
  21         old_sigset_t sa_mask;
  22         unsigned long sa_flags;
  23         __sigrestore_t sa_restorer;
  24 };
  25
  26 struct sigaction {
  27         __sighandler_t sa_handler;
  28         unsigned long sa_flags;
  29         __sigrestore_t sa_restorer;
  30         sigset_t sa_mask;               /* mask last for extensibility */
  31 };
  32
  33 struct k_sigaction {
  34         struct sigaction sa;
  35 };
  36 #include <asm/sigcontext.h>
  37
  38 #ifndef CONFIG_CPU_HAS_NO_BITFIELDS
  39 #define __HAVE_ARCH_SIG_BITOPS
  40
  41 static inline void sigaddset(sigset_t *set, int _sig)
  42 {
  43         asm ("bfset %0{%1,#1}"
  44                 : "+od" (*set)
  45                 : "id" ((_sig - 1) ^ 31)
  46                 : "cc");
  47 }
  48
  49 static inline void sigdelset(sigset_t *set, int _sig)
  50 {
  51         asm ("bfclr %0{%1,#1}"
  52                 : "+od" (*set)
  53                 : "id" ((_sig - 1) ^ 31)
  54                 : "cc");
  55 }
  56
  57 static inline int __const_sigismember(sigset_t *set, int _sig)
  58 {
  59         unsigned long sig = _sig - 1;
  60         return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
  61 }
  62
  63 static inline int __gen_sigismember(sigset_t *set, int _sig)
  64 {
  65         int ret;
  66         asm ("bfextu %1{%2,#1},%0"
  67                 : "=d" (ret)
  68                 : "od" (*set), "id" ((_sig-1) ^ 31)
  69                 : "cc");
  70         return ret;
  71 }
  72
  73 #define sigismember(set,sig)                    \
  74         (__builtin_constant_p(sig) ?            \
  75          __const_sigismember(set,sig) :         \
  76          __gen_sigismember(set,sig))
  77
  78 static inline int sigfindinword(unsigned long word)
  79 {
  80         asm ("bfffo %1{#0,#0},%0"
  81                 : "=d" (word)
  82                 : "d" (word & -word)
  83                 : "cc");
  84         return word ^ 31;
  85 }
  86
  87 #endif /* !CONFIG_CPU_HAS_NO_BITFIELDS */
  88
  89 #ifdef __uClinux__
  90 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
  91 #else
  92 struct pt_regs;
  93 extern void ptrace_signal_deliver(struct pt_regs *regs, void *cookie);
  94 #endif /* __uClinux__ */
  95
  96 #endif /* _M68K_SIGNAL_H */