1 #ifndef _LINUX_SIGNAL_H
2 #define _LINUX_SIGNAL_H
4 #include <asm/signal.h>
5 #include <asm/siginfo.h>
9 * Real Time signals may be queued.
13 struct sigqueue
*next
;
18 struct sigqueue
*head
, **tail
;
23 * Define some primitives to manipulate sigset_t.
26 #ifndef __HAVE_ARCH_SIG_BITOPS
27 #include <asm/bitops.h>
29 /* We don't use <asm/bitops.h> for these because there is no need to
31 extern inline void sigaddset(sigset_t
*set
, int _sig
)
33 unsigned long sig
= _sig
- 1;
35 set
->sig
[0] |= 1UL << sig
;
37 set
->sig
[sig
/ _NSIG_BPW
] |= 1UL << (sig
% _NSIG_BPW
);
40 extern inline void sigdelset(sigset_t
*set
, int _sig
)
42 unsigned long sig
= _sig
- 1;
44 set
->sig
[0] &= ~(1UL << sig
);
46 set
->sig
[sig
/ _NSIG_BPW
] &= ~(1UL << (sig
% _NSIG_BPW
));
49 extern inline int sigismember(sigset_t
*set
, int _sig
)
51 unsigned long sig
= _sig
- 1;
53 return 1 & (set
->sig
[0] >> sig
);
55 return 1 & (set
->sig
[sig
/ _NSIG_BPW
] >> (sig
% _NSIG_BPW
));
58 extern inline int sigfindinword(unsigned long word
)
63 #define sigmask(sig) (1UL << ((sig) - 1))
65 #endif /* __HAVE_ARCH_SIG_BITOPS */
67 #ifndef __HAVE_ARCH_SIG_SETOPS
68 #include <linux/string.h>
70 #define _SIG_SET_BINOP(name, op) \
71 extern inline void name(sigset_t *r, const sigset_t *a, const sigset_t *b) \
73 unsigned long a0, a1, a2, a3, b0, b1, b2, b3; \
76 for (i = 0; i < _NSIG_WORDS/4; ++i) { \
77 a0 = a->sig[4*i+0]; a1 = a->sig[4*i+1]; \
78 a2 = a->sig[4*i+2]; a3 = a->sig[4*i+3]; \
79 b0 = b->sig[4*i+0]; b1 = b->sig[4*i+1]; \
80 b2 = b->sig[4*i+2]; b3 = b->sig[4*i+3]; \
81 r->sig[4*i+0] = op(a0, b0); \
82 r->sig[4*i+1] = op(a1, b1); \
83 r->sig[4*i+2] = op(a2, b2); \
84 r->sig[4*i+3] = op(a3, b3); \
86 switch (_NSIG_WORDS % 4) { \
88 a0 = a->sig[4*i+0]; a1 = a->sig[4*i+1]; a2 = a->sig[4*i+2]; \
89 b0 = b->sig[4*i+0]; b1 = b->sig[4*i+1]; b2 = b->sig[4*i+2]; \
90 r->sig[4*i+0] = op(a0, b0); \
91 r->sig[4*i+1] = op(a1, b1); \
92 r->sig[4*i+2] = op(a2, b2); \
95 a0 = a->sig[4*i+0]; a1 = a->sig[4*i+1]; \
96 b0 = b->sig[4*i+0]; b1 = b->sig[4*i+1]; \
97 r->sig[4*i+0] = op(a0, b0); \
98 r->sig[4*i+1] = op(a1, b1); \
101 a0 = a->sig[4*i+0]; b0 = b->sig[4*i+0]; \
102 r->sig[4*i+0] = op(a0, b0); \
107 #define _sig_or(x,y) ((x) | (y))
108 _SIG_SET_BINOP(sigorsets
, _sig_or
)
110 #define _sig_and(x,y) ((x) & (y))
111 _SIG_SET_BINOP(sigandsets
, _sig_and
)
113 #define _sig_nand(x,y) ((x) & ~(y))
114 _SIG_SET_BINOP(signandsets
, _sig_nand
)
116 #undef _SIG_SET_BINOP
121 #define _SIG_SET_OP(name, op) \
122 extern inline void name(sigset_t *set) \
126 for (i = 0; i < _NSIG_WORDS/4; ++i) { \
127 set->sig[4*i+0] = op(set->sig[4*i+0]); \
128 set->sig[4*i+1] = op(set->sig[4*i+1]); \
129 set->sig[4*i+2] = op(set->sig[4*i+2]); \
130 set->sig[4*i+3] = op(set->sig[4*i+3]); \
132 switch (_NSIG_WORDS % 4) { \
133 case 3: set->sig[4*i+2] = op(set->sig[4*i+2]); \
134 case 2: set->sig[4*i+1] = op(set->sig[4*i+1]); \
135 case 1: set->sig[4*i+0] = op(set->sig[4*i+0]); \
139 #define _sig_not(x) (~(x))
140 _SIG_SET_OP(signotset
, _sig_not
)
145 extern inline void sigemptyset(sigset_t
*set
)
147 switch (_NSIG_WORDS
) {
149 memset(set
, 0, sizeof(sigset_t
));
151 case 2: set
->sig
[1] = 0;
152 case 1: set
->sig
[0] = 0;
157 extern inline void sigfillset(sigset_t
*set
)
159 switch (_NSIG_WORDS
) {
161 memset(set
, -1, sizeof(sigset_t
));
163 case 2: set
->sig
[1] = -1;
164 case 1: set
->sig
[0] = -1;
169 extern char * render_sigset_t(sigset_t
*set
, char *buffer
);
171 /* Some extensions for manipulating the low 32 signals in particular. */
173 extern inline void sigaddsetmask(sigset_t
*set
, unsigned long mask
)
178 extern inline void sigdelsetmask(sigset_t
*set
, unsigned long mask
)
180 set
->sig
[0] &= ~mask
;
183 extern inline int sigtestsetmask(sigset_t
*set
, unsigned long mask
)
185 return (set
->sig
[0] & mask
) != 0;
188 extern inline void siginitset(sigset_t
*set
, unsigned long mask
)
191 switch (_NSIG_WORDS
) {
193 memset(&set
->sig
[1], 0, sizeof(long)*(_NSIG_WORDS
-1));
195 case 2: set
->sig
[1] = 0;
200 extern inline void siginitsetinv(sigset_t
*set
, unsigned long mask
)
203 switch (_NSIG_WORDS
) {
205 memset(&set
->sig
[1], -1, sizeof(long)*(_NSIG_WORDS
-1));
207 case 2: set
->sig
[1] = -1;
212 #endif /* __HAVE_ARCH_SIG_SETOPS */
214 static inline void init_sigpending(struct sigpending
*sig
)
216 sigemptyset(&sig
->signal
);
218 sig
->tail
= &sig
->head
;
221 extern long do_sigpending(void *, unsigned long);
223 #endif /* __KERNEL__ */
225 #endif /* _LINUX_SIGNAL_H */