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Linux/include/asm-sh/signal.h

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  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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