2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 1995, 96, 97, 98, 99, 2003 by Ralf Baechle
7 * Copyright (C) 1999 Silicon Graphics, Inc.
12 #include <linux/config.h>
13 #include <linux/types.h>
16 #define _NSIG_BPW (sizeof(unsigned long) * 8)
17 #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
20 unsigned long sig[_NSIG_WORDS];
23 typedef unsigned long old_sigset_t; /* at least 32 bits */
25 #define SIGHUP 1 /* Hangup (POSIX). */
26 #define SIGINT 2 /* Interrupt (ANSI). */
27 #define SIGQUIT 3 /* Quit (POSIX). */
28 #define SIGILL 4 /* Illegal instruction (ANSI). */
29 #define SIGTRAP 5 /* Trace trap (POSIX). */
30 #define SIGIOT 6 /* IOT trap (4.2 BSD). */
31 #define SIGABRT SIGIOT /* Abort (ANSI). */
33 #define SIGFPE 8 /* Floating-point exception (ANSI). */
34 #define SIGKILL 9 /* Kill, unblockable (POSIX). */
35 #define SIGBUS 10 /* BUS error (4.2 BSD). */
36 #define SIGSEGV 11 /* Segmentation violation (ANSI). */
38 #define SIGPIPE 13 /* Broken pipe (POSIX). */
39 #define SIGALRM 14 /* Alarm clock (POSIX). */
40 #define SIGTERM 15 /* Termination (ANSI). */
41 #define SIGUSR1 16 /* User-defined signal 1 (POSIX). */
42 #define SIGUSR2 17 /* User-defined signal 2 (POSIX). */
43 #define SIGCHLD 18 /* Child status has changed (POSIX). */
44 #define SIGCLD SIGCHLD /* Same as SIGCHLD (System V). */
45 #define SIGPWR 19 /* Power failure restart (System V). */
46 #define SIGWINCH 20 /* Window size change (4.3 BSD, Sun). */
47 #define SIGURG 21 /* Urgent condition on socket (4.2 BSD). */
48 #define SIGIO 22 /* I/O now possible (4.2 BSD). */
49 #define SIGPOLL SIGIO /* Pollable event occurred (System V). */
50 #define SIGSTOP 23 /* Stop, unblockable (POSIX). */
51 #define SIGTSTP 24 /* Keyboard stop (POSIX). */
52 #define SIGCONT 25 /* Continue (POSIX). */
53 #define SIGTTIN 26 /* Background read from tty (POSIX). */
54 #define SIGTTOU 27 /* Background write to tty (POSIX). */
55 #define SIGVTALRM 28 /* Virtual alarm clock (4.2 BSD). */
56 #define SIGPROF 29 /* Profiling alarm clock (4.2 BSD). */
57 #define SIGXCPU 30 /* CPU limit exceeded (4.2 BSD). */
58 #define SIGXFSZ 31 /* File size limit exceeded (4.2 BSD). */
60 /* These should not be considered constants from userland. */
62 #define SIGRTMAX _NSIG
67 * SA_ONSTACK indicates that a registered stack_t will be used.
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_ONSTACK 0x08000000
79 #define SA_RESETHAND 0x80000000
80 #define SA_RESTART 0x10000000
81 #define SA_SIGINFO 0x00000008
82 #define SA_NODEFER 0x40000000
83 #define SA_NOCLDWAIT 0x00010000
84 #define SA_NOCLDSTOP 0x00000001
86 #define SA_NOMASK SA_NODEFER
87 #define SA_ONESHOT SA_RESETHAND
88 #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
90 #define SA_RESTORER 0x04000000 /* Only for o32 */
93 * sigaltstack controls
98 #define MINSIGSTKSZ 2048
104 * These values of sa_flags are used only by the kernel as part of the
105 * irq handling routines.
107 * SA_INTERRUPT is also used by the irq handling routines.
108 * SA_SHIRQ flag is for shared interrupt support on PCI and EISA.
110 #define SA_SAMPLE_RANDOM SA_RESTART
112 #ifdef CONFIG_TRAD_SIGNALS
113 #define sig_uses_siginfo(ka) ((ka)->sa.sa_flags & SA_SIGINFO)
115 #define sig_uses_siginfo(ka) (1)
118 #endif /* __KERNEL__ */
120 #define SIG_BLOCK 1 /* for blocking signals */
121 #define SIG_UNBLOCK 2 /* for unblocking signals */
122 #define SIG_SETMASK 3 /* for setting the signal mask */
123 #define SIG_SETMASK32 256 /* Goodie from SGI for BSD compatibility:
124 set only the low 32 bit of the sigset. */
126 /* Type of a signal handler. */
127 typedef void __signalfn_t(int);
128 typedef __signalfn_t __user *__sighandler_t;
130 /* Fake signal functions */
131 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */
132 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */
133 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
136 unsigned int sa_flags;
137 __sighandler_t sa_handler;
143 #ifdef CONFIG_BINFMT_IRIX
144 void (*sa_restorer)(void);
148 /* IRIX compatible stack_t */
149 typedef struct sigaltstack {
156 #include <asm/sigcontext.h>
157 #include <asm/siginfo.h>
159 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
162 extern void do_signal(struct pt_regs *regs);
163 extern void do_signal32(struct pt_regs *regs);
165 extern int setup_frame(struct k_sigaction * ka, struct pt_regs *regs,
166 int signr, sigset_t *set);
167 extern int setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs,
168 int signr, sigset_t *set, siginfo_t *info);
170 extern int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
171 int signr, sigset_t *set);
172 extern int setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
173 int signr, sigset_t *set, siginfo_t *info);
175 extern int setup_rt_frame_n32(struct k_sigaction * ka, struct pt_regs *regs,
176 int signr, sigset_t *set, siginfo_t *info);
178 #endif /* __KERNEL__ */
180 #endif /* _ASM_SIGNAL_H */