1 #ifndef _ASM_CRIS_SIGNAL_H
2 #define _ASM_CRIS_SIGNAL_H
3
4 #include <linux/types.h>
5
6 /* Avoid too many header ordering problems. */
7 struct siginfo;
8
9 #ifdef __KERNEL__
10 /* Most things should be clean enough to redefine this at will, if care
11 is taken to make libc match. */
12
13 #define _NSIG 64
14 #define _NSIG_BPW 32
15 #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
16
17 typedef unsigned long old_sigset_t; /* at least 32 bits */
18
19 typedef struct {
20 unsigned long sig[_NSIG_WORDS];
21 } sigset_t;
22
23 #else
24 /* Here we must cater to libcs that poke about in kernel headers. */
25
26 #define NSIG 32
27 typedef unsigned long sigset_t;
28
29 #endif /* __KERNEL__ */
30
31 #define SIGHUP 1
32 #define SIGINT 2
33 #define SIGQUIT 3
34 #define SIGILL 4
35 #define SIGTRAP 5
36 #define SIGABRT 6
37 #define SIGIOT 6
38 #define SIGBUS 7
39 #define SIGFPE 8
40 #define SIGKILL 9
41 #define SIGUSR1 10
42 #define SIGSEGV 11
43 #define SIGUSR2 12
44 #define SIGPIPE 13
45 #define SIGALRM 14
46 #define SIGTERM 15
47 #define SIGSTKFLT 16
48 #define SIGCHLD 17
49 #define SIGCONT 18
50 #define SIGSTOP 19
51 #define SIGTSTP 20
52 #define SIGTTIN 21
53 #define SIGTTOU 22
54 #define SIGURG 23
55 #define SIGXCPU 24
56 #define SIGXFSZ 25
57 #define SIGVTALRM 26
58 #define SIGPROF 27
59 #define SIGWINCH 28
60 #define SIGIO 29
61 #define SIGPOLL SIGIO
62 /*
63 #define SIGLOST 29
64 */
65 #define SIGPWR 30
66 #define SIGSYS 31
67 #define SIGUNUSED 31
68
69 /* These should not be considered constants from userland. */
70 #define SIGRTMIN 32
71 #define SIGRTMAX (_NSIG-1)
72
73 /*
74 * SA_FLAGS values:
75 *
76 * SA_ONSTACK indicates that a registered stack_t will be used.
77 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
78 * SA_RESTART flag to get restarting signals (which were the default long ago)
79 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
80 * SA_RESETHAND clears the handler when the signal is delivered.
81 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
82 * SA_NODEFER prevents the current signal from being masked in the handler.
83 *
84 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
85 * Unix names RESETHAND and NODEFER respectively.
86 */
87
88 #define SA_NOCLDSTOP 0x00000001
89 #define SA_NOCLDWAIT 0x00000002 /* not supported yet */
90 #define SA_SIGINFO 0x00000004
91 #define SA_ONSTACK 0x08000000
92 #define SA_RESTART 0x10000000
93 #define SA_NODEFER 0x40000000
94 #define SA_RESETHAND 0x80000000
95
96 #define SA_NOMASK SA_NODEFER
97 #define SA_ONESHOT SA_RESETHAND
98 #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
99
100 #define SA_RESTORER 0x04000000
101
102 /*
103 * sigaltstack controls
104 */
105 #define SS_ONSTACK 1
106 #define SS_DISABLE 2
107
108 #define MINSIGSTKSZ 2048
109 #define SIGSTKSZ 8192
110
111 #ifdef __KERNEL__
112
113 /*
114 * These values of sa_flags are used only by the kernel as part of the
115 * irq handling routines.
116 *
117 * SA_INTERRUPT is also used by the irq handling routines.
118 * SA_SHIRQ is for shared interrupt support
119 */
120 #define SA_PROBE SA_ONESHOT
121 #define SA_SAMPLE_RANDOM SA_RESTART
122 #define SA_SHIRQ 0x04000000
123 #endif
124
125 #define SIG_BLOCK 0 /* for blocking signals */
126 #define SIG_UNBLOCK 1 /* for unblocking signals */
127 #define SIG_SETMASK 2 /* for setting the signal mask */
128
129 /* Type of a signal handler. */
130 typedef void (*__sighandler_t)(int);
131
132 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */
133 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */
134 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
135
136 #ifdef __KERNEL__
137 struct old_sigaction {
138 __sighandler_t sa_handler;
139 old_sigset_t sa_mask;
140 unsigned long sa_flags;
141 void (*sa_restorer)(void);
142 };
143
144 struct sigaction {
145 __sighandler_t sa_handler;
146 unsigned long sa_flags;
147 void (*sa_restorer)(void);
148 sigset_t sa_mask; /* mask last for extensibility */
149 };
150
151 struct k_sigaction {
152 struct sigaction sa;
153 };
154 #else
155 /* Here we must cater to libcs that poke about in kernel headers. */
156
157 struct sigaction {
158 union {
159 __sighandler_t _sa_handler;
160 void (*_sa_sigaction)(int, struct siginfo *, void *);
161 } _u;
162 sigset_t sa_mask;
163 unsigned long sa_flags;
164 void (*sa_restorer)(void);
165 };
166
167 #define sa_handler _u._sa_handler
168 #define sa_sigaction _u._sa_sigaction
169
170 #endif /* __KERNEL__ */
171
172 typedef struct sigaltstack {
173 void *ss_sp;
174 int ss_flags;
175 size_t ss_size;
176 } stack_t;
177
178 #ifdef __KERNEL__
179 #include <asm/sigcontext.h>
180
181 /* here we could define asm-optimized sigaddset, sigdelset etc. operations.
182 * if we don't, generic ones are used from linux/signal.h
183 */
184
185 #endif /* __KERNEL__ */
186
187 #endif
188
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