1 #ifndef _ASMPPC64_SIGNAL_H
2 #define _ASMPPC64_SIGNAL_H
4 #include <linux/types.h>
5 #include <asm/siginfo.h>
7 /* Avoid too many header ordering problems. */
12 #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
14 typedef unsigned long old_sigset_t; /* at least 32 bits */
17 unsigned long sig[_NSIG_WORDS];
58 /* These should not be considered constants from userland. */
60 #define SIGRTMAX _NSIG
65 * SA_ONSTACK is not currently supported, but will allow sigaltstack(2).
66 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
67 * SA_RESTART flag to get restarting signals (which were the default long ago)
68 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
69 * SA_RESETHAND clears the handler when the signal is delivered.
70 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
71 * SA_NODEFER prevents the current signal from being masked in the handler.
73 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
74 * Unix names RESETHAND and NODEFER respectively.
76 #define SA_NOCLDSTOP 0x00000001u
77 #define SA_NOCLDWAIT 0x00000002u
78 #define SA_SIGINFO 0x00000004u
79 #define SA_ONSTACK 0x08000000u
80 #define SA_RESTART 0x10000000u
81 #define SA_NODEFER 0x40000000u
82 #define SA_RESETHAND 0x80000000u
84 #define SA_NOMASK SA_NODEFER
85 #define SA_ONESHOT SA_RESETHAND
86 #define SA_INTERRUPT 0x20000000u /* dummy -- ignored */
88 #define SA_RESTORER 0x04000000u
91 * sigaltstack controls
96 #define MINSIGSTKSZ 2048
101 * These values of sa_flags are used only by the kernel as part of the
102 * irq handling routines.
104 * SA_INTERRUPT is also used by the irq handling routines.
105 * SA_SHIRQ is for shared interrupt support on PCI and EISA.
107 #define SA_PROBE SA_ONESHOT
108 #define SA_SAMPLE_RANDOM SA_RESTART
109 #define SA_SHIRQ 0x04000000
112 #define SIG_BLOCK 0 /* for blocking signals */
113 #define SIG_UNBLOCK 1 /* for unblocking signals */
114 #define SIG_SETMASK 2 /* for setting the signal mask */
116 /* Type of a signal handler. */
117 typedef void (*__sighandler_t)(int);
119 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */
120 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */
121 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
123 struct old_sigaction {
124 __sighandler_t sa_handler;
125 old_sigset_t sa_mask;
126 unsigned long sa_flags;
127 void (*sa_restorer)(void);
131 __sighandler_t sa_handler;
132 unsigned long sa_flags;
133 void (*sa_restorer)(void);
134 sigset_t sa_mask; /* mask last for extensibility */
141 typedef struct sigaltstack {
149 extern int do_signal(sigset_t *oldset, struct pt_regs *regs);
150 extern int do_signal32(sigset_t *oldset, struct pt_regs *regs);
151 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
153 #endif /* _ASMPPC64_SIGNAL_H */