1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _M68K_SIGNAL_H
3*4882a593Smuzhiyun #define _M68K_SIGNAL_H
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #include <uapi/asm/signal.h>
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun /* Most things should be clean enough to redefine this at will, if care
8*4882a593Smuzhiyun is taken to make libc match. */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #define _NSIG 64
11*4882a593Smuzhiyun #define _NSIG_BPW 32
12*4882a593Smuzhiyun #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun typedef unsigned long old_sigset_t; /* at least 32 bits */
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun typedef struct {
17*4882a593Smuzhiyun unsigned long sig[_NSIG_WORDS];
18*4882a593Smuzhiyun } sigset_t;
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun #define __ARCH_HAS_SA_RESTORER
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun #include <asm/sigcontext.h>
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun #ifndef CONFIG_CPU_HAS_NO_BITFIELDS
25*4882a593Smuzhiyun #define __HAVE_ARCH_SIG_BITOPS
26*4882a593Smuzhiyun
sigaddset(sigset_t * set,int _sig)27*4882a593Smuzhiyun static inline void sigaddset(sigset_t *set, int _sig)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun asm ("bfset %0{%1,#1}"
30*4882a593Smuzhiyun : "+o" (*set)
31*4882a593Smuzhiyun : "id" ((_sig - 1) ^ 31)
32*4882a593Smuzhiyun : "cc");
33*4882a593Smuzhiyun }
34*4882a593Smuzhiyun
sigdelset(sigset_t * set,int _sig)35*4882a593Smuzhiyun static inline void sigdelset(sigset_t *set, int _sig)
36*4882a593Smuzhiyun {
37*4882a593Smuzhiyun asm ("bfclr %0{%1,#1}"
38*4882a593Smuzhiyun : "+o" (*set)
39*4882a593Smuzhiyun : "id" ((_sig - 1) ^ 31)
40*4882a593Smuzhiyun : "cc");
41*4882a593Smuzhiyun }
42*4882a593Smuzhiyun
__const_sigismember(sigset_t * set,int _sig)43*4882a593Smuzhiyun static inline int __const_sigismember(sigset_t *set, int _sig)
44*4882a593Smuzhiyun {
45*4882a593Smuzhiyun unsigned long sig = _sig - 1;
46*4882a593Smuzhiyun return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
47*4882a593Smuzhiyun }
48*4882a593Smuzhiyun
__gen_sigismember(sigset_t * set,int _sig)49*4882a593Smuzhiyun static inline int __gen_sigismember(sigset_t *set, int _sig)
50*4882a593Smuzhiyun {
51*4882a593Smuzhiyun int ret;
52*4882a593Smuzhiyun asm ("bfextu %1{%2,#1},%0"
53*4882a593Smuzhiyun : "=d" (ret)
54*4882a593Smuzhiyun : "o" (*set), "id" ((_sig-1) ^ 31)
55*4882a593Smuzhiyun : "cc");
56*4882a593Smuzhiyun return ret;
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun #define sigismember(set,sig) \
60*4882a593Smuzhiyun (__builtin_constant_p(sig) ? \
61*4882a593Smuzhiyun __const_sigismember(set,sig) : \
62*4882a593Smuzhiyun __gen_sigismember(set,sig))
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun #endif /* !CONFIG_CPU_HAS_NO_BITFIELDS */
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun #endif /* _M68K_SIGNAL_H */
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