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