File: /usr/src/linux/include/asm-ppc/signal.h
1 /*
2 * BK Id: SCCS/s.signal.h 1.5 05/17/01 18:14:25 cort
3 */
4 #ifndef _ASMPPC_SIGNAL_H
5 #define _ASMPPC_SIGNAL_H
6
7 #ifdef __KERNEL__
8 #include <linux/types.h>
9 #endif /* __KERNEL__ */
10
11 /* Avoid too many header ordering problems. */
12 struct siginfo;
13
14 /* Most things should be clean enough to redefine this at will, if care
15 is taken to make libc match. */
16
17 #define _NSIG 64
18 #define _NSIG_BPW 32
19 #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
20
21 typedef unsigned long old_sigset_t; /* at least 32 bits */
22
23 typedef struct {
24 unsigned long sig[_NSIG_WORDS];
25 } sigset_t;
26
27 #define SIGHUP 1
28 #define SIGINT 2
29 #define SIGQUIT 3
30 #define SIGILL 4
31 #define SIGTRAP 5
32 #define SIGABRT 6
33 #define SIGIOT 6
34 #define SIGBUS 7
35 #define SIGFPE 8
36 #define SIGKILL 9
37 #define SIGUSR1 10
38 #define SIGSEGV 11
39 #define SIGUSR2 12
40 #define SIGPIPE 13
41 #define SIGALRM 14
42 #define SIGTERM 15
43 #define SIGSTKFLT 16
44 #define SIGCHLD 17
45 #define SIGCONT 18
46 #define SIGSTOP 19
47 #define SIGTSTP 20
48 #define SIGTTIN 21
49 #define SIGTTOU 22
50 #define SIGURG 23
51 #define SIGXCPU 24
52 #define SIGXFSZ 25
53 #define SIGVTALRM 26
54 #define SIGPROF 27
55 #define SIGWINCH 28
56 #define SIGIO 29
57 #define SIGPOLL SIGIO
58 /*
59 #define SIGLOST 29
60 */
61 #define SIGPWR 30
62 #define SIGSYS 31
63 #define SIGUNUSED 31
64
65 /* These should not be considered constants from userland. */
66 #define SIGRTMIN 32
67 #define SIGRTMAX (_NSIG-1)
68
69 /*
70 * SA_FLAGS values:
71 *
72 * SA_ONSTACK is not currently supported, but will allow sigaltstack(2).
73 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
74 * SA_RESTART flag to get restarting signals (which were the default long ago)
75 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
76 * SA_RESETHAND clears the handler when the signal is delivered.
77 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
78 * SA_NODEFER prevents the current signal from being masked in the handler.
79 *
80 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
81 * Unix names RESETHAND and NODEFER respectively.
82 */
83 #define SA_NOCLDSTOP 0x00000001
84 #define SA_NOCLDWAIT 0x00000002 /* not supported yet */
85 #define SA_SIGINFO 0x00000004
86 #define SA_ONSTACK 0x08000000
87 #define SA_RESTART 0x10000000
88 #define SA_NODEFER 0x40000000
89 #define SA_RESETHAND 0x80000000
90
91 #define SA_NOMASK SA_NODEFER
92 #define SA_ONESHOT SA_RESETHAND
93 #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
94
95 #define SA_RESTORER 0x04000000
96
97 /*
98 * sigaltstack controls
99 */
100 #define SS_ONSTACK 1
101 #define SS_DISABLE 2
102
103 #define MINSIGSTKSZ 2048
104 #define SIGSTKSZ 8192
105 #ifdef __KERNEL__
106
107 /*
108 * These values of sa_flags are used only by the kernel as part of the
109 * irq handling routines.
110 *
111 * SA_INTERRUPT is also used by the irq handling routines.
112 * SA_SHIRQ is for shared interrupt support on PCI and EISA.
113 */
114 #define SA_PROBE SA_ONESHOT
115 #define SA_SAMPLE_RANDOM SA_RESTART
116 #define SA_SHIRQ 0x04000000
117 #endif
118
119 #define SIG_BLOCK 0 /* for blocking signals */
120 #define SIG_UNBLOCK 1 /* for unblocking signals */
121 #define SIG_SETMASK 2 /* for setting the signal mask */
122
123 /* Type of a signal handler. */
124 typedef void (*__sighandler_t)(int);
125
126 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */
127 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */
128 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
129
130 struct old_sigaction {
131 __sighandler_t sa_handler;
132 old_sigset_t sa_mask;
133 unsigned long sa_flags;
134 void (*sa_restorer)(void);
135 };
136
137 struct sigaction {
138 __sighandler_t sa_handler;
139 unsigned long sa_flags;
140 void (*sa_restorer)(void);
141 sigset_t sa_mask; /* mask last for extensibility */
142 };
143
144 struct k_sigaction {
145 struct sigaction sa;
146 };
147
148 typedef struct sigaltstack {
149 void *ss_sp;
150 int ss_flags;
151 size_t ss_size;
152 } stack_t;
153
154 #ifdef __KERNEL__
155 #include <asm/sigcontext.h>
156
157 #endif
158
159 #endif
160