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Linux/include/asm-cris/signal.h

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  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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