Linux Kernel  3.7.1
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signal.h
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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 {
22  unsigned long sa_flags;
24 };
25 
26 struct sigaction {
28  unsigned long sa_flags;
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  : "+o" (*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  : "+o" (*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  : "o" (*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 */