1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _M68K_SIGNAL_H
3 #define _M68K_SIGNAL_H
4
5 #include <uapi/asm/signal.h>
6
7 /* Most things should be clean enough to redefine this at will, if care
8 is taken to make libc match. */
9
10 #define _NSIG 64
11 #define _NSIG_BPW 32
12 #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
13
14 typedef unsigned long old_sigset_t; /* at least 32 bits */
15
16 typedef struct {
17 unsigned long sig[_NSIG_WORDS];
18 } sigset_t;
19
20 #define __ARCH_HAS_SA_RESTORER
21
22 #include <asm/sigcontext.h>
23
24 #ifndef CONFIG_CPU_HAS_NO_BITFIELDS
25 #define __HAVE_ARCH_SIG_BITOPS
26
27 static inline void sigaddset(sigset_t *set, int _sig)
28 {
29 asm ("bfset %0{%1,#1}"
30 : "+o" (*set)
31 : "id" ((_sig - 1) ^ 31)
32 : "cc");
33 }
34
35 static inline void sigdelset(sigset_t *set, int _sig)
36 {
37 asm ("bfclr %0{%1,#1}"
38 : "+o" (*set)
39 : "id" ((_sig - 1) ^ 31)
40 : "cc");
41 }
42
43 static inline int __const_sigismember(sigset_t *set, int _sig)
44 {
45 unsigned long sig = _sig - 1;
46 return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
47 }
48
49 static inline int __gen_sigismember(sigset_t *set, int _sig)
50 {
51 int ret;
52 asm ("bfextu %1{%2,#1},%0"
53 : "=d" (ret)
54 : "o" (*set), "id" ((_sig-1) ^ 31)
55 : "cc");
56 return ret;
57 }
58
59 #define sigismember(set,sig) \
60 (__builtin_constant_p(sig) ? \
61 __const_sigismember(set,sig) : \
62 __gen_sigismember(set,sig))
63
64 #endif /* !CONFIG_CPU_HAS_NO_BITFIELDS */
65
66 #endif /* _M68K_SIGNAL_H */
67
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