1 #ifndef _ASMPPC_SIGNAL_H
2 #define _ASMPPC_SIGNAL_H
4 #include <linux/types.h>
6 /* Avoid too many header ordering problems. */
9 /* Most things should be clean enough to redefine this at will, if care
10 is taken to make libc match. */
14 #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
16 typedef unsigned long old_sigset_t; /* at least 32 bits */
19 unsigned long sig[_NSIG_WORDS];
60 /* These should not be considered constants from userland. */
62 #define SIGRTMAX (_NSIG-1)
67 * SA_ONSTACK is not currently supported, but will allow sigaltstack(2).
68 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
69 * SA_RESTART flag to get restarting signals (which were the default long ago)
70 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
71 * SA_RESETHAND clears the handler when the signal is delivered.
72 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
73 * SA_NODEFER prevents the current signal from being masked in the handler.
75 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
76 * Unix names RESETHAND and NODEFER respectively.
78 #define SA_NOCLDSTOP 0x00000001
79 #define SA_NOCLDWAIT 0x00000002 /* not supported yet */
80 #define SA_SIGINFO 0x00000004
81 #define SA_ONSTACK 0x08000000
82 #define SA_RESTART 0x10000000
83 #define SA_NODEFER 0x40000000
84 #define SA_RESETHAND 0x80000000
86 #define SA_NOMASK SA_NODEFER
87 #define SA_ONESHOT SA_RESETHAND
88 #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
90 #define SA_RESTORER 0x04000000
93 * sigaltstack controls
98 #define MINSIGSTKSZ 2048
103 * These values of sa_flags are used only by the kernel as part of the
104 * irq handling routines.
106 * SA_INTERRUPT is also used by the irq handling routines.
107 * SA_SHIRQ is for shared interrupt support on PCI and EISA.
109 #define SA_PROBE SA_ONESHOT
110 #define SA_SAMPLE_RANDOM SA_RESTART
111 #define SA_SHIRQ 0x04000000
114 #define SIG_BLOCK 0 /* for blocking signals */
115 #define SIG_UNBLOCK 1 /* for unblocking signals */
116 #define SIG_SETMASK 2 /* for setting the signal mask */
118 /* Type of a signal handler. */
119 typedef void (*__sighandler_t)(int);
121 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */
122 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */
123 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
125 struct old_sigaction {
126 __sighandler_t sa_handler;
127 old_sigset_t sa_mask;
128 unsigned long sa_flags;
129 void (*sa_restorer)(void);
133 __sighandler_t sa_handler;
134 unsigned long sa_flags;
135 void (*sa_restorer)(void);
136 sigset_t sa_mask; /* mask last for extensibility */
143 typedef struct sigaltstack {
150 #include <asm/sigcontext.h>