1 #ifndef _ASMARM_SIGNAL_H
2 #define _ASMARM_SIGNAL_H
4 #include <linux/types.h>
6 /* Avoid too many header ordering problems. */
10 /* Most things should be clean enough to redefine this at will, if care
11 is taken to make libc match. */
15 #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
17 typedef unsigned long old_sigset_t; /* at least 32 bits */
20 unsigned long sig[_NSIG_WORDS];
24 /* Here we must cater to libcs that poke about in kernel headers. */
27 typedef unsigned long sigset_t;
29 #endif /* __KERNEL__ */
69 /* These should not be considered constants from userland. */
71 #define SIGRTMAX _NSIG
78 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
79 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
80 * SA_SIGINFO deliver the signal with SIGINFO structs
81 * SA_THIRTYTWO delivers the signal in 32-bit mode, even if the task
82 * is running in 26-bit.
83 * SA_ONSTACK allows alternate signal stacks (see sigaltstack(2)).
84 * SA_RESTART flag to get restarting signals (which were the default long ago)
85 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
86 * SA_NODEFER prevents the current signal from being masked in the handler.
87 * SA_RESETHAND clears the handler when the signal is delivered.
89 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
90 * Unix names RESETHAND and NODEFER respectively.
92 #define SA_NOCLDSTOP 0x00000001
93 #define SA_NOCLDWAIT 0x00000002
94 #define SA_SIGINFO 0x00000004
95 #define SA_THIRTYTWO 0x02000000
96 #define SA_RESTORER 0x04000000
97 #define SA_ONSTACK 0x08000000
98 #define SA_RESTART 0x10000000
99 #define SA_NODEFER 0x40000000
100 #define SA_RESETHAND 0x80000000
102 #define SA_NOMASK SA_NODEFER
103 #define SA_ONESHOT SA_RESETHAND
104 #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
108 * sigaltstack controls
113 #define MINSIGSTKSZ 2048
114 #define SIGSTKSZ 8192
119 * These values of sa_flags are used only by the kernel as part of the
120 * irq handling routines.
122 * SA_INTERRUPT is also used by the irq handling routines.
123 * SA_SHIRQ is for shared interrupt support on PCI and EISA.
125 #define SA_PROBE 0x80000000
126 #define SA_SAMPLE_RANDOM 0x10000000
127 #define SA_IRQNOMASK 0x08000000
128 #define SA_SHIRQ 0x04000000
131 #define SIG_BLOCK 0 /* for blocking signals */
132 #define SIG_UNBLOCK 1 /* for unblocking signals */
133 #define SIG_SETMASK 2 /* for setting the signal mask */
135 /* Type of a signal handler. */
136 typedef void __signalfn_t(int);
137 typedef __signalfn_t __user *__sighandler_t;
139 typedef void __restorefn_t(void);
140 typedef __restorefn_t __user *__sigrestore_t;
142 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */
143 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */
144 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
147 struct old_sigaction {
148 __sighandler_t sa_handler;
149 old_sigset_t sa_mask;
150 unsigned long sa_flags;
151 __sigrestore_t sa_restorer;
155 __sighandler_t sa_handler;
156 unsigned long sa_flags;
157 __sigrestore_t sa_restorer;
158 sigset_t sa_mask; /* mask last for extensibility */
166 /* Here we must cater to libcs that poke about in kernel headers. */
170 __sighandler_t _sa_handler;
171 void (*_sa_sigaction)(int, struct siginfo *, void *);
174 unsigned long sa_flags;
175 void (*sa_restorer)(void);
178 #define sa_handler _u._sa_handler
179 #define sa_sigaction _u._sa_sigaction
181 #endif /* __KERNEL__ */
183 typedef struct sigaltstack {
190 #include <asm/sigcontext.h>
191 #define ptrace_signal_deliver(regs, cookie) do { } while (0)