1 #ifndef __ASM_SH_SIGNAL_H
2 #define __ASM_SH_SIGNAL_H
4 #include <linux/types.h>
6 /* Avoid too many header ordering problems. */
11 /* Most things should be clean enough to redefine this at will, if care
12 is taken to make libc match. */
16 #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
18 typedef unsigned long old_sigset_t; /* at least 32 bits */
21 unsigned long sig[_NSIG_WORDS];
25 /* Here we must cater to libcs that poke about in kernel headers. */
28 typedef unsigned long sigset_t;
30 #endif /* __KERNEL__ */
70 /* These should not be considered constants from userland. */
72 #define SIGRTMAX _NSIG
77 * SA_ONSTACK indicates that a registered stack_t will be used.
78 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
79 * SA_RESTART flag to get restarting signals (which were the default long ago)
80 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
81 * SA_RESETHAND clears the handler when the signal is delivered.
82 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
83 * SA_NODEFER prevents the current signal from being masked in the handler.
85 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
86 * Unix names RESETHAND and NODEFER respectively.
88 #define SA_NOCLDSTOP 0x00000001
89 #define SA_NOCLDWAIT 0x00000002
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
96 #define SA_NOMASK SA_NODEFER
97 #define SA_ONESHOT SA_RESETHAND
98 #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
100 #define SA_RESTORER 0x04000000
103 * sigaltstack controls
108 #define MINSIGSTKSZ 2048
109 #define SIGSTKSZ 8192
114 * These values of sa_flags are used only by the kernel as part of the
115 * irq handling routines.
117 * SA_INTERRUPT is also used by the irq handling routines.
118 * SA_SHIRQ is for shared interrupt support on PCI and EISA.
120 #define SA_PROBE SA_ONESHOT
121 #define SA_SAMPLE_RANDOM SA_RESTART
122 #define SA_SHIRQ 0x04000000
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 */
129 /* Type of a signal handler. */
130 typedef void (*__sighandler_t)(int);
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 */
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);
145 __sighandler_t sa_handler;
146 unsigned long sa_flags;
147 void (*sa_restorer)(void);
148 sigset_t sa_mask; /* mask last for extensibility */
155 /* Here we must cater to libcs that poke about in kernel headers. */
159 __sighandler_t _sa_handler;
160 void (*_sa_sigaction)(int, struct siginfo *, void *);
163 unsigned long sa_flags;
164 void (*sa_restorer)(void);
167 #define sa_handler _u._sa_handler
168 #define sa_sigaction _u._sa_sigaction
170 #endif /* __KERNEL__ */
172 typedef struct sigaltstack {
179 #include <asm/sigcontext.h>
181 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
183 #endif /* __KERNEL__ */
185 #endif /* __ASM_SH_SIGNAL_H */