1 #ifndef _ASMPPC64_SIGNAL_H
2 #define _ASMPPC64_SIGNAL_H
4 #include <linux/types.h>
6 /* Avoid too many header ordering problems. */
11 #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
13 typedef unsigned long old_sigset_t;
16 unsigned long sig[_NSIG_WORDS];
57 /* These should not be considered constants from userland. */
59 #define SIGRTMAX (_NSIG-1)
64 * SA_ONSTACK is not currently supported, but will allow sigaltstack(2).
65 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
66 * SA_RESTART flag to get restarting signals (which were the default long ago)
67 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
68 * SA_RESETHAND clears the handler when the signal is delivered.
69 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
70 * SA_NODEFER prevents the current signal from being masked in the handler.
72 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
73 * Unix names RESETHAND and NODEFER respectively.
75 #define SA_NOCLDSTOP 0x00000001
76 #define SA_NOCLDWAIT 0x00000002 /* not supported yet */
77 #define SA_SIGINFO 0x00000004
78 #define SA_ONSTACK 0x08000000
79 #define SA_RESTART 0x10000000
80 #define SA_NODEFER 0x40000000
81 #define SA_RESETHAND 0x80000000
83 #define SA_NOMASK SA_NODEFER
84 #define SA_ONESHOT SA_RESETHAND
85 #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
87 #define SA_RESTORER 0x04000000
90 * sigaltstack controls
95 #define MINSIGSTKSZ 2048
100 * These values of sa_flags are used only by the kernel as part of the
101 * irq handling routines.
103 * SA_INTERRUPT is also used by the irq handling routines.
104 * SA_SHIRQ is for shared interrupt support on PCI and EISA.
106 #define SA_PROBE SA_ONESHOT
107 #define SA_SAMPLE_RANDOM SA_RESTART
108 #define SA_SHIRQ 0x04000000
111 #define SIG_BLOCK 0 /* for blocking signals */
112 #define SIG_UNBLOCK 1 /* for unblocking signals */
113 #define SIG_SETMASK 2 /* for setting the signal mask */
115 /* Type of a signal handler. */
116 typedef void (*__sighandler_t)(int);
118 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */
119 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */
120 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
122 struct old_sigaction {
123 __sighandler_t sa_handler;
124 old_sigset_t sa_mask;
125 unsigned long sa_flags;
126 void (*sa_restorer)(void);
130 __sighandler_t sa_handler;
131 unsigned long sa_flags;
132 void (*sa_restorer)(void);
133 sigset_t sa_mask; /* mask last for extensibility */
140 typedef struct sigaltstack {
146 #endif /* _ASMPPC64_SIGNAL_H */