1 #ifndef __ASM_SH_SIGNAL_H
2 #define __ASM_SH_SIGNAL_H
3
4 #include <linux/types.h>
5
6 /* Avoid too many header ordering problems. */
7 struct siginfo;
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 #define SIGHUP 1
20 #define SIGINT 2
21 #define SIGQUIT 3
22 #define SIGILL 4
23 #define SIGTRAP 5
24 #define SIGABRT 6
25 #define SIGIOT 6
26 #define SIGBUS 7
27 #define SIGFPE 8
28 #define SIGKILL 9
29 #define SIGUSR1 10
30 #define SIGSEGV 11
31 #define SIGUSR2 12
32 #define SIGPIPE 13
33 #define SIGALRM 14
34 #define SIGTERM 15
35 #define SIGSTKFLT 16
36 #define SIGCHLD 17
37 #define SIGCONT 18
38 #define SIGSTOP 19
39 #define SIGTSTP 20
40 #define SIGTTIN 21
41 #define SIGTTOU 22
42 #define SIGURG 23
43 #define SIGXCPU 24
44 #define SIGXFSZ 25
45 #define SIGVTALRM 26
46 #define SIGPROF 27
47 #define SIGWINCH 28
48 #define SIGIO 29
49 #define SIGPOLL SIGIO
50 /*
51 #define SIGLOST 29
52 */
53 #define SIGPWR 30
54 #define SIGSYS 31
55 #define SIGUNUSED 31
56
57 /* These should not be considered constants from userland. */
58 #define SIGRTMIN 32
59 #define SIGRTMAX (_NSIG-1)
60
61 /*
62 * SA_FLAGS values:
63 *
64 * SA_ONSTACK indicates that a registered stack_t will be used.
65 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
66 * SA_RESTART flag to get restarting signals (which were the default long ago)
67 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
68 * SA_RESETHAND clears the handler when the signal is delivered.
69 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
70 * SA_NODEFER prevents the current signal from being masked in the handler.
71 *
72 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
73 * Unix names RESETHAND and NODEFER respectively.
74 */
75 #define SA_NOCLDSTOP 0x00000001
76 #define SA_NOCLDWAIT 0x00000002 /* not supported yet */
77 #define SA_SIGINFO 0x00000004
78 #define SA_ONSTACK 0x08000000
79 #define SA_RESTART 0x10000000
80 #define SA_NODEFER 0x40000000
81 #define SA_RESETHAND 0x80000000
82
83 #define SA_NOMASK SA_NODEFER
84 #define SA_ONESHOT SA_RESETHAND
85 #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
86
87 #define SA_RESTORER 0x04000000
88
89 /*
90 * sigaltstack controls
91 */
92 #define SS_ONSTACK 1
93 #define SS_DISABLE 2
94
95 #define MINSIGSTKSZ 2048
96 #define SIGSTKSZ 8192
97
98 #ifdef __KERNEL__
99
100 /*
101 * These values of sa_flags are used only by the kernel as part of the
102 * irq handling routines.
103 *
104 * SA_INTERRUPT is also used by the irq handling routines.
105 * SA_SHIRQ is for shared interrupt support on PCI and EISA.
106 */
107 #define SA_PROBE SA_ONESHOT
108 #define SA_SAMPLE_RANDOM SA_RESTART
109 #define SA_SHIRQ 0x04000000
110 #endif
111
112 #define SIG_BLOCK 0 /* for blocking signals */
113 #define SIG_UNBLOCK 1 /* for unblocking signals */
114 #define SIG_SETMASK 2 /* for setting the signal mask */
115
116 /* Type of a signal handler. */
117 typedef void (*__sighandler_t)(int);
118
119 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */
120 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */
121 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
122
123 #ifdef __KERNEL__
124 struct old_sigaction {
125 __sighandler_t sa_handler;
126 old_sigset_t sa_mask;
127 unsigned long sa_flags;
128 void (*sa_restorer)(void);
129 };
130
131 struct sigaction {
132 __sighandler_t sa_handler;
133 unsigned long sa_flags;
134 void (*sa_restorer)(void);
135 sigset_t sa_mask; /* mask last for extensibility */
136 };
137
138 struct k_sigaction {
139 struct sigaction sa;
140 };
141 #else
142 /* Here we must cater to libcs that poke about in kernel headers. */
143
144 struct sigaction {
145 union {
146 __sighandler_t _sa_handler;
147 void (*_sa_sigaction)(int, struct siginfo *, void *);
148 } _u;
149 sigset_t sa_mask;
150 unsigned long sa_flags;
151 void (*sa_restorer)(void);
152 };
153
154 #define sa_handler _u._sa_handler
155 #define sa_sigaction _u._sa_sigaction
156
157 #endif /* __KERNEL__ */
158
159 typedef struct sigaltstack {
160 void *ss_sp;
161 int ss_flags;
162 size_t ss_size;
163 } stack_t;
164
165 #ifdef __KERNEL__
166 #include <asm/sigcontext.h>
167
168 #define sigmask(sig) (1UL << ((sig) - 1))
169
170 #endif /* __KERNEL__ */
171
172 #endif /* __ASM_SH_SIGNAL_H */
173
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