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>
14 /* Avoid too many header ordering problems. */
18 /* Most things should be clean enough to redefine this at will, if care
19 is taken to make libc match. */
20 #include <asm/sigcontext.h>
21 #define _NSIG _SIGCONTEXT_NSIG
22 #define _NSIG_BPW _SIGCONTEXT_NSIG_BPW
23 #define _NSIG_WORDS _SIGCONTEXT_NSIG_WORDS
25 typedef unsigned long old_sigset_t; /* at least 32 bits */
28 unsigned long sig[_NSIG_WORDS];
32 /* Here we must cater to libcs that poke about in kernel headers. */
35 typedef unsigned long sigset_t;
37 #endif /* __KERNEL__ */
77 /* These should not be considered constants from userland. */
79 #define SIGRTMAX (_NSIG-1)
84 * SA_ONSTACK indicates that a registered stack_t will be used.
85 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
86 * SA_RESTART flag to get restarting signals (which were the default long ago)
87 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
88 * SA_RESETHAND clears the handler when the signal is delivered.
89 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
90 * SA_NODEFER prevents the current signal from being masked in the handler.
92 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
93 * Unix names RESETHAND and NODEFER respectively.
95 #define SA_NOCLDSTOP 0x00000001
96 #define SA_NOCLDWAIT 0x00000002 /* not supported yet */
97 #define SA_SIGINFO 0x00000004
98 #define SA_ONSTACK 0x08000000
99 #define SA_RESTART 0x10000000
100 #define SA_NODEFER 0x40000000
101 #define SA_RESETHAND 0x80000000
103 #define SA_NOMASK SA_NODEFER
104 #define SA_ONESHOT SA_RESETHAND
105 #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
107 #define SA_RESTORER 0x04000000
110 * sigaltstack controls
115 #define MINSIGSTKSZ 2048
116 #define SIGSTKSZ 8192
121 * These values of sa_flags are used only by the kernel as part of the
122 * irq handling routines.
124 * SA_INTERRUPT is also used by the irq handling routines.
125 * SA_SHIRQ is for shared interrupt support on PCI and EISA.
127 #define SA_PROBE SA_ONESHOT
128 #define SA_SAMPLE_RANDOM SA_RESTART
129 #define SA_SHIRQ 0x04000000
130 #define SA_DOPATHGROUP 0x00100000
131 #define SA_FORCE 0x00200000
134 #define SIG_BLOCK 0 /* for blocking signals */
135 #define SIG_UNBLOCK 1 /* for unblocking signals */
136 #define SIG_SETMASK 2 /* for setting the signal mask */
138 /* Type of a signal handler. */
139 typedef void (*__sighandler_t)(int);
141 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */
142 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */
143 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
146 struct old_sigaction {
147 __sighandler_t sa_handler;
148 old_sigset_t sa_mask;
149 unsigned long sa_flags;
150 void (*sa_restorer)(void);
154 __sighandler_t sa_handler;
155 unsigned long sa_flags;
156 void (*sa_restorer)(void);
157 sigset_t sa_mask; /* mask last for extensibility */
164 /* Here we must cater to libcs that poke about in kernel headers. */
168 __sighandler_t _sa_handler;
169 void (*_sa_sigaction)(int, struct siginfo *, void *);
171 unsigned long sa_flags;
172 void (*sa_restorer)(void);
176 #define sa_handler _u._sa_handler
177 #define sa_sigaction _u._sa_sigaction
179 #endif /* __KERNEL__ */
181 typedef struct sigaltstack {