2 * include/asm-s390/signal.h
6 * Derived from "include/asm-i386/signal.h"
9 #ifndef _ASMS390_SIGNAL_H
10 #define _ASMS390_SIGNAL_H
12 #include <linux/types.h>
13 #include <linux/time.h>
15 /* Avoid too many header ordering problems. */
20 /* Most things should be clean enough to redefine this at will, if care
21 is taken to make libc match. */
22 #include <asm/sigcontext.h>
23 #define _NSIG _SIGCONTEXT_NSIG
24 #define _NSIG_BPW _SIGCONTEXT_NSIG_BPW
25 #define _NSIG_WORDS _SIGCONTEXT_NSIG_WORDS
27 typedef unsigned long old_sigset_t; /* at least 32 bits */
30 unsigned long sig[_NSIG_WORDS];
34 /* Here we must cater to libcs that poke about in kernel headers. */
37 typedef unsigned long sigset_t;
39 #endif /* __KERNEL__ */
79 /* These should not be considered constants from userland. */
81 #define SIGRTMAX _NSIG
86 * SA_ONSTACK indicates that a registered stack_t will be used.
87 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
88 * SA_RESTART flag to get restarting signals (which were the default long ago)
89 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
90 * SA_RESETHAND clears the handler when the signal is delivered.
91 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
92 * SA_NODEFER prevents the current signal from being masked in the handler.
94 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
95 * Unix names RESETHAND and NODEFER respectively.
97 #define SA_NOCLDSTOP 0x00000001
98 #define SA_NOCLDWAIT 0x00000002
99 #define SA_SIGINFO 0x00000004
100 #define SA_ONSTACK 0x08000000
101 #define SA_RESTART 0x10000000
102 #define SA_NODEFER 0x40000000
103 #define SA_RESETHAND 0x80000000
105 #define SA_NOMASK SA_NODEFER
106 #define SA_ONESHOT SA_RESETHAND
107 #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
109 #define SA_RESTORER 0x04000000
112 * sigaltstack controls
117 #define MINSIGSTKSZ 2048
118 #define SIGSTKSZ 8192
120 #define SIG_BLOCK 0 /* for blocking signals */
121 #define SIG_UNBLOCK 1 /* for unblocking signals */
122 #define SIG_SETMASK 2 /* for setting the signal mask */
124 /* Type of a signal handler. */
125 typedef void (*__sighandler_t)(int);
127 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */
128 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */
129 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
132 struct old_sigaction {
133 __sighandler_t sa_handler;
134 old_sigset_t sa_mask;
135 unsigned long sa_flags;
136 void (*sa_restorer)(void);
140 __sighandler_t sa_handler;
141 unsigned long sa_flags;
142 void (*sa_restorer)(void);
143 sigset_t sa_mask; /* mask last for extensibility */
150 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
153 /* Here we must cater to libcs that poke about in kernel headers. */
157 __sighandler_t _sa_handler;
158 void (*_sa_sigaction)(int, struct siginfo *, void *);
160 #ifndef __s390x__ /* lovely */
162 unsigned long sa_flags;
163 void (*sa_restorer)(void);
164 #else /* __s390x__ */
165 unsigned long sa_flags;
166 void (*sa_restorer)(void);
168 #endif /* __s390x__ */
171 #define sa_handler _u._sa_handler
172 #define sa_sigaction _u._sa_sigaction
174 #endif /* __KERNEL__ */
176 typedef struct sigaltstack {